-/* Tags file maker to go with GNU Emacs
- Copyright (C) 1984, 87, 88, 89, 93, 94, 95
+/* Tags file maker to go with GNU Emacs -*- coding: latin-1 -*-
+ Copyright (C) 1984, 1987-1989, 1993-1995, 1998-2001
Free Software Foundation, Inc. and Ken Arnold
+
This file is not considered part of GNU Emacs.
This program is free software; you can redistribute it and/or modify
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software Foundation,
+Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
* Authors:
* Fortran added by Jim Kleckner.
* Ed Pelegri-Llopart added C typedefs.
* Gnu Emacs TAGS format and modifications by RMS?
- * Sam Kendall added C++.
- * Francesco Potorti` reorganised C and C++ based on work by Joe Wells.
- * Regexp tags by Tom Tromey.
+ * 1989 Sam Kendall added C++.
+ * 1992 Joseph B. Wells improved C and C++ parsing.
+ * 1993 Francesco Potortì reorganised C and C++.
+ * 1994 Regexp tags by Tom Tromey.
+ * 2001 Nested classes by Francesco Potortì (ideas by Mykola Dzyuba).
*
- * Francesco Potorti` (pot@cnuce.cnr.it) is the current maintainer.
+ * Francesco Potortì <pot@gnu.org> has maintained it since 1993.
*/
-char pot_etags_version[] = "@(#) pot revision number is 11.53";
+char pot_etags_version[] = "@(#) pot revision number is 15.2";
#define TRUE 1
#define FALSE 0
-#ifndef DEBUG
-# define DEBUG FALSE
+#ifdef DEBUG
+# undef DEBUG
+# define DEBUG TRUE
+#else
+# define DEBUG FALSE
+# define NDEBUG /* disable assert */
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+ /* On some systems, Emacs defines static as nothing for the sake
+ of unexec. We don't want that here since we don't use unexec. */
+# undef static
+# define ETAGS_REGEXPS /* use the regexp features */
+# define LONG_OPTIONS /* accept long options */
+# ifndef PTR /* for Xemacs */
+# define PTR void *
+# endif
+# ifndef __P /* for Xemacs */
+# define __P(args) args
+# endif
+#else
+# if defined(__STDC__) && (__STDC__ || defined(__SUNPRO_C))
+# define __P(args) args /* use prototypes */
+# define PTR void * /* for generic pointers */
+# else
+# define __P(args) () /* no prototypes */
+# define const /* remove const for old compilers' sake */
+# define PTR long * /* don't use void* */
+# endif
+#endif /* !HAVE_CONFIG_H */
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1 /* enables some compiler checks on GNU */
#endif
+/* WIN32_NATIVE is for Xemacs.
+ MSDOS, WINDOWSNT, DOS_NT are for Emacs. */
+#ifdef WIN32_NATIVE
+# undef MSDOS
+# undef WINDOWSNT
+# define WINDOWSNT
+#endif /* WIN32_NATIVE */
+
#ifdef MSDOS
-#include <fcntl.h>
-#include <sys/param.h>
+# undef MSDOS
+# define MSDOS TRUE
+# include <fcntl.h>
+# include <sys/param.h>
+# include <io.h>
+# ifndef HAVE_CONFIG_H
+# define DOS_NT
+# include <sys/config.h>
+# endif
+#else
+# define MSDOS FALSE
#endif /* MSDOS */
#ifdef WINDOWSNT
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-#define MAXPATHLEN _MAX_PATH
-#endif
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-/* On some systems, Emacs defines static as nothing for the sake
- of unexec. We don't want that here since we don't use unexec. */
-#undef static
-#endif
+# include <stdlib.h>
+# include <fcntl.h>
+# include <string.h>
+# include <direct.h>
+# include <io.h>
+# define MAXPATHLEN _MAX_PATH
+# undef HAVE_NTGUI
+# undef DOS_NT
+# define DOS_NT
+# ifndef HAVE_GETCWD
+# define HAVE_GETCWD
+# endif /* undef HAVE_GETCWD */
+#else /* !WINDOWSNT */
+# ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+# else
+ extern char *getenv ();
+# endif
+#endif /* !WINDOWSNT */
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#else
+# if defined (HAVE_GETCWD) && !defined (WINDOWSNT)
+ extern char *getcwd (char *buf, size_t size);
+# endif
+#endif /* HAVE_UNISTD_H */
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#ifndef errno
-extern int errno;
+ extern int errno;
#endif
#include <sys/types.h>
#include <sys/stat.h>
+#include <assert.h>
+#ifdef NDEBUG
+# undef assert /* some systems have a buggy assert.h */
+# define assert(x) ((void) 0)
+#endif
+
#if !defined (S_ISREG) && defined (S_IFREG)
# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#endif
-#include <getopt.h>
+#ifdef LONG_OPTIONS
+# include <getopt.h>
+#else
+# define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr)
+ extern char *optarg;
+ extern int optind, opterr;
+#endif /* LONG_OPTIONS */
#ifdef ETAGS_REGEXPS
-#include <regex.h>
+# ifndef HAVE_CONFIG_H /* this is a standalone compilation */
+# ifdef __CYGWIN__ /* compiling on Cygwin */
+ !!! NOTICE !!!
+ the regex.h distributed with Cygwin is not compatible with etags, alas!
+If you want regular expression support, you should delete this notice and
+ arrange to use the GNU regex.h and regex.c.
+# endif
+# endif
+# include <regex.h>
#endif /* ETAGS_REGEXPS */
/* Define CTAGS to make the program "ctags" compatible with the usual one.
- Let it undefined to make the program "etags", which makes emacs-style
+ Leave it undefined to make the program "etags", which makes emacs-style
tag tables and tags typedefs, #defines and struct/union/enum by default. */
#ifdef CTAGS
# undef CTAGS
/* Exit codes for success and failure. */
#ifdef VMS
-#define GOOD 1
-#define BAD 0
+# define GOOD 1
+# define BAD 0
#else
-#define GOOD 0
-#define BAD 1
+# define GOOD 0
+# define BAD 1
#endif
-/* C extensions. */
-#define C_PLPL 0x00001 /* C++ */
-#define C_STAR 0x00003 /* C* */
-#define YACC 0x10000 /* yacc file */
+#define streq(s,t) (assert((s)!=NULL || (t)!=NULL), !strcmp (s, t))
+#define strneq(s,t,n) (assert((s)!=NULL || (t)!=NULL), !strncmp (s, t, n))
-#define streq(s,t) ((DEBUG &&!(s)&&!(t)&&(abort(),1)) || !strcmp(s,t))
-#define strneq(s,t,n) ((DEBUG &&!(s)&&!(t)&&(abort(),1)) || !strncmp(s,t,n))
+#define CHARS 256 /* 2^sizeof(char) */
+#define CHAR(x) ((unsigned int)(x) & (CHARS - 1))
+#define iswhite(c) (_wht[CHAR(c)]) /* c is white */
+#define notinname(c) (_nin[CHAR(c)]) /* c is not in a name */
+#define begtoken(c) (_btk[CHAR(c)]) /* c can start token */
+#define intoken(c) (_itk[CHAR(c)]) /* c can be in token */
+#define endtoken(c) (_etk[CHAR(c)]) /* c ends tokens */
-#define lowcase(c) tolower ((unsigned char)c)
+#define ISALNUM(c) isalnum (CHAR(c))
+#define ISALPHA(c) isalpha (CHAR(c))
+#define ISDIGIT(c) isdigit (CHAR(c))
+#define ISLOWER(c) islower (CHAR(c))
-#define iswhite(arg) (_wht[arg]) /* T if char is white */
-#define begtoken(arg) (_btk[arg]) /* T if char can start token */
-#define intoken(arg) (_itk[arg]) /* T if char can be in token */
-#define endtoken(arg) (_etk[arg]) /* T if char ends tokens */
-
-#ifdef DOS_NT
-# define absolutefn(fn) (fn[0] == '/' || (isalpha (fn[0]) && fn[1] == ':'))
-#else
-# define absolutefn(fn) (fn[0] == '/')
-#endif
+#define lowcase(c) tolower (CHAR(c))
+#define upcase(c) toupper (CHAR(c))
/*
- * xnew -- allocate storage
+ * xnew, xrnew -- allocate, reallocate storage
*
* SYNOPSIS: Type *xnew (int n, Type);
+ * void xrnew (OldPointer, int n, Type);
*/
-#define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
+#if DEBUG
+# include "chkmalloc.h"
+# define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
+ (n) * sizeof (Type)))
+# define xrnew(op,n,Type) ((op) = (Type *) trace_realloc (__FILE__, __LINE__, \
+ (char *) (op), (n) * sizeof (Type)))
+#else
+# define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
+# define xrnew(op,n,Type) ((op) = (Type *) xrealloc ( \
+ (char *) (op), (n) * sizeof (Type)))
+#endif
+
+#define bool int
+
+typedef void Lang_function __P((FILE *));
-typedef int logical;
+typedef struct
+{
+ char *suffix;
+ char *command; /* Takes one arg and decompresses to stdout */
+} compressor;
+
+typedef struct
+{
+ char *name;
+ Lang_function *function;
+ char **filenames;
+ char **suffixes;
+ char **interpreters;
+} language;
-typedef struct nd_st
+typedef struct node_st
{ /* sorting structure */
char *name; /* function or type name */
char *file; /* file name */
- logical is_func; /* use pattern or line no */
- logical been_warned; /* set if noticed dup */
+ bool is_func; /* use pattern or line no */
+ bool been_warned; /* set if noticed dup */
int lno; /* line number tag is on */
long cno; /* character number line starts on */
char *pat; /* search pattern */
- struct nd_st *left, *right; /* left and right sons */
-} NODE;
-
-extern char *getenv ();
-
-char *concat ();
-char *savenstr (), *savestr ();
-char *etags_strchr (), *etags_strrchr ();
-char *etags_getcwd ();
-char *relative_filename (), *absolute_filename (), *absolute_dirname ();
-long *xmalloc (), *xrealloc ();
-
-typedef void Lang_function ();
-#if FALSE /* many compilers barf on this */
-Lang_function Asm_labels;
-Lang_function default_C_entries;
-Lang_function C_entries;
-Lang_function Cplusplus_entries;
-Lang_function Cstar_entries;
-Lang_function Fortran_functions;
-Lang_function Yacc_entries;
-Lang_function Lisp_functions;
-Lang_function Pascal_functions;
-Lang_function Perl_functions;
-Lang_function Prolog_functions;
-Lang_function Scheme_functions;
-Lang_function TeX_functions;
-Lang_function just_read_file;
-#else /* so let's write it this way */
-void Asm_labels ();
-void C_entries ();
-void default_C_entries ();
-void plain_C_entries ();
-void Cplusplus_entries ();
-void Cstar_entries ();
-void Fortran_functions ();
-void Yacc_entries ();
-void Lisp_functions ();
-void Pascal_functions ();
-void Perl_functions ();
-void Prolog_functions ();
-void Scheme_functions ();
-void TeX_functions ();
-void just_read_file ();
-#endif
+ struct node_st *left, *right; /* left and right sons */
+} node;
+
+/*
+ * A `linebuffer' is a structure which holds a line of text.
+ * `readline_internal' reads a line from a stream into a linebuffer
+ * and works regardless of the length of the line.
+ * SIZE is the size of BUFFER, LEN is the length of the string in
+ * BUFFER after readline reads it.
+ */
+typedef struct
+{
+ long size;
+ int len;
+ char *buffer;
+} linebuffer;
+
+/* Many compilers barf on this:
+ Lang_function Ada_funcs;
+ so let's write it this way */
+static void Ada_funcs __P((FILE *));
+static void Asm_labels __P((FILE *));
+static void C_entries __P((int c_ext, FILE *));
+static void default_C_entries __P((FILE *));
+static void plain_C_entries __P((FILE *));
+static void Cjava_entries __P((FILE *));
+static void Cobol_paragraphs __P((FILE *));
+static void Cplusplus_entries __P((FILE *));
+static void Cstar_entries __P((FILE *));
+static void Erlang_functions __P((FILE *));
+static void Fortran_functions __P((FILE *));
+static void Yacc_entries __P((FILE *));
+static void Lisp_functions __P((FILE *));
+static void Makefile_targets __P((FILE *));
+static void Pascal_functions __P((FILE *));
+static void Perl_functions __P((FILE *));
+static void PHP_functions __P((FILE *));
+static void Postscript_functions __P((FILE *));
+static void Prolog_functions __P((FILE *));
+static void Python_functions __P((FILE *));
+static void Scheme_functions __P((FILE *));
+static void TeX_commands __P((FILE *));
+static void Texinfo_nodes __P((FILE *));
+static void just_read_file __P((FILE *));
+
+static void print_language_names __P((void));
+static void print_version __P((void));
+static void print_help __P((void));
+int main __P((int, char **));
+
+static compressor *get_compressor_from_suffix __P((char *, char **));
+static language *get_language_from_langname __P((const char *));
+static language *get_language_from_interpreter __P((char *));
+static language *get_language_from_filename __P((char *));
+static long readline __P((linebuffer *, FILE *));
+static long readline_internal __P((linebuffer *, FILE *));
+static bool nocase_tail __P((char *));
+static char *get_tag __P((char *));
-Lang_function *get_language_from_name ();
-Lang_function *get_language_from_interpreter ();
-Lang_function *get_language_from_suffix ();
-int total_size_of_entries ();
-long readline ();
-long readline_internal ();
#ifdef ETAGS_REGEXPS
-void add_regex ();
-#endif
-void add_node ();
-void error ();
-void suggest_asking_for_help ();
-void fatal (), pfatal ();
-void find_entries ();
-void free_tree ();
-void getit ();
-void init ();
-void initbuffer ();
-void pfnote ();
-void process_file ();
-void put_entries ();
-void takeprec ();
+static void analyse_regex __P((char *, bool));
+static void add_regex __P((char *, bool, language *));
+static void free_patterns __P((void));
+#endif /* ETAGS_REGEXPS */
+static void error __P((const char *, const char *));
+static void suggest_asking_for_help __P((void));
+void fatal __P((char *, char *));
+static void pfatal __P((char *));
+static void add_node __P((node *, node **));
+
+static void init __P((void));
+static void initbuffer __P((linebuffer *));
+static void find_entries __P((char *, FILE *));
+static void free_tree __P((node *));
+static void pfnote __P((char *, bool, char *, int, int, long));
+static void new_pfnote __P((char *, int, bool, char *, int, int, long));
+static void process_file __P((char *));
+static void put_entries __P((node *));
+
+static char *concat __P((char *, char *, char *));
+static char *skip_spaces __P((char *));
+static char *skip_non_spaces __P((char *));
+static char *savenstr __P((char *, int));
+static char *savestr __P((char *));
+static char *etags_strchr __P((const char *, int));
+static char *etags_strrchr __P((const char *, int));
+static char *etags_getcwd __P((void));
+static char *relative_filename __P((char *, char *));
+static char *absolute_filename __P((char *, char *));
+static char *absolute_dirname __P((char *, char *));
+static bool filename_is_absolute __P((char *f));
+static void canonicalize_filename __P((char *));
+static void linebuffer_setlen __P((linebuffer *, int));
+static PTR xmalloc __P((unsigned int));
+static PTR xrealloc __P((char *, unsigned int));
\f
-char searchar = '/'; /* use /.../ searches */
+static char searchar = '/'; /* use /.../ searches */
-int lineno; /* line number of current line */
-long charno; /* current character number */
+static char *tagfile; /* output file */
+static char *progname; /* name this program was invoked with */
+static char *cwd; /* current working directory */
+static char *tagfiledir; /* directory of tagfile */
+static FILE *tagf; /* ioptr for tags file */
-long linecharno; /* charno of start of line; not used by C,
- but by every other language. */
+static char *curfile; /* current input uncompressed file name */
+static char *curfiledir; /* absolute dir of curfile */
+static char *curtagfname; /* current file name to write in tagfile */
+static language *curlang; /* current language */
-char *curfile; /* current input file name */
-char *tagfile; /* output file */
-char *progname; /* name this program was invoked with */
-char *cwd; /* current working directory */
-char *tagfiledir; /* directory of tagfile */
+static int lineno; /* line number of current line */
+static long charno; /* current character number */
+static long linecharno; /* charno of start of current line */
+static char *dbp; /* pointer to start of current tag */
+static bool nocharno; /* only use line number when making tag */
+static const int invalidcharno = -1;
-FILE *tagf; /* ioptr for tags file */
-NODE *head; /* the head of the binary tree of tags */
+static node *head; /* the head of the binary tree of tags */
-/*
- * A `struct linebuffer' is a structure which holds a line of text.
- * `readline' reads a line from a stream into a linebuffer and works
- * regardless of the length of the line.
- */
-#define GROW_LINEBUFFER(buf,toksize) \
-while (buf.size < toksize) \
- buf.buffer = (char *) xrealloc (buf.buffer, buf.size *= 2)
-struct linebuffer
-{
- long size;
- char *buffer;
-};
-
-struct linebuffer lb; /* the current line */
-struct linebuffer token_name; /* used by C_entries as a temporary area */
-struct
-{
- long linepos;
- struct linebuffer lb; /* used by C_entries instead of lb */
-} lbs[2];
+static linebuffer lb; /* the current line */
/* boolean "functions" (see init) */
-logical _wht[0177], _etk[0177], _itk[0177], _btk[0177];
-char
+static bool _wht[CHARS], _nin[CHARS], _itk[CHARS], _btk[CHARS], _etk[CHARS];
+static char
/* white chars */
- *white = " \f\t\n\013",
+ *white = " \f\t\n\r\v",
+ /* not in a name */
+ *nonam = " \f\t\n\r()=,;",
/* token ending chars */
- *endtk = " \t\n\013\"'#()[]{}=-+%*/&|^~!<>;,.:?",
+ *endtk = " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?",
/* token starting chars */
*begtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
/* valid in-token chars */
- *intk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
+ *midtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
-logical append_to_tagfile; /* -a: append to tags */
-/* The following three default to TRUE for etags, but to FALSE for ctags. */
-logical typedefs; /* -t: create tags for typedefs */
-logical typedefs_and_cplusplus; /* -T: create tags for typedefs, level */
+static bool append_to_tagfile; /* -a: append to tags */
+/* The following four default to TRUE for etags, but to FALSE for ctags. */
+static bool typedefs; /* -t: create tags for C and Ada typedefs */
+static bool typedefs_or_cplusplus; /* -T: create tags for C typedefs, level */
/* 0 struct/enum/union decls, and C++ */
/* member functions. */
-logical constantypedefs; /* -d: create tags for C #define and enum */
- /* constants. Enum consts not implemented. */
+static bool constantypedefs; /* -d: create tags for C #define, enum */
+ /* constants and variables. */
/* -D: opposite of -d. Default under ctags. */
-logical update; /* -u: update tags */
-logical vgrind_style; /* -v: create vgrind style index output */
-logical no_warnings; /* -w: suppress warnings */
-logical cxref_style; /* -x: create cxref style output */
-logical cplusplus; /* .[hc] means C++, not C */
-logical noindentypedefs; /* -I: ignore indentation in C */
-
-struct option longopts[] =
+static bool declarations; /* --declarations: tag them and extern in C&Co*/
+static bool globals; /* create tags for global variables */
+static bool no_line_directive; /* ignore #line directives */
+static bool members; /* create tags for C member variables */
+static bool update; /* -u: update tags */
+static bool vgrind_style; /* -v: create vgrind style index output */
+static bool no_warnings; /* -w: suppress warnings */
+static bool cxref_style; /* -x: create cxref style output */
+static bool cplusplus; /* .[hc] means C++, not C */
+static bool noindentypedefs; /* -I: ignore indentation in C */
+static bool packages_only; /* --packages-only: in Ada, only tag packages*/
+
+#ifdef LONG_OPTIONS
+static struct option longopts[] =
{
- { "append", no_argument, NULL, 'a' },
- { "backward-search", no_argument, NULL, 'B' },
- { "c++", no_argument, NULL, 'C' },
- { "cxref", no_argument, NULL, 'x' },
- { "defines", no_argument, NULL, 'd' },
- { "help", no_argument, NULL, 'h' },
- { "help", no_argument, NULL, 'H' },
- { "ignore-indentation", no_argument, NULL, 'I' },
- { "include", required_argument, NULL, 'i' },
- { "language", required_argument, NULL, 'l' },
- { "no-defines", no_argument, NULL, 'D' },
- { "no-regex", no_argument, NULL, 'R' },
- { "no-warn", no_argument, NULL, 'w' },
- { "output", required_argument, NULL, 'o' },
- { "regex", required_argument, NULL, 'r' },
- { "typedefs", no_argument, NULL, 't' },
- { "typedefs-and-c++", no_argument, NULL, 'T' },
- { "update", no_argument, NULL, 'u' },
- { "version", no_argument, NULL, 'V' },
- { "vgrind", no_argument, NULL, 'v' },
- { 0 }
+ { "packages-only", no_argument, &packages_only, TRUE },
+ { "append", no_argument, NULL, 'a' },
+ { "backward-search", no_argument, NULL, 'B' },
+ { "c++", no_argument, NULL, 'C' },
+ { "cxref", no_argument, NULL, 'x' },
+ { "defines", no_argument, NULL, 'd' },
+ { "declarations", no_argument, &declarations, TRUE },
+ { "no-defines", no_argument, NULL, 'D' },
+ { "globals", no_argument, &globals, TRUE },
+ { "no-globals", no_argument, &globals, FALSE },
+ { "no-line-directive", no_argument, &no_line_directive, TRUE },
+ { "help", no_argument, NULL, 'h' },
+ { "help", no_argument, NULL, 'H' },
+ { "ignore-indentation", no_argument, NULL, 'I' },
+ { "include", required_argument, NULL, 'i' },
+ { "language", required_argument, NULL, 'l' },
+ { "members", no_argument, &members, TRUE },
+ { "no-members", no_argument, &members, FALSE },
+ { "no-warn", no_argument, NULL, 'w' },
+ { "output", required_argument, NULL, 'o' },
+#ifdef ETAGS_REGEXPS
+ { "regex", required_argument, NULL, 'r' },
+ { "no-regex", no_argument, NULL, 'R' },
+ { "ignore-case-regex", required_argument, NULL, 'c' },
+#endif /* ETAGS_REGEXPS */
+ { "typedefs", no_argument, NULL, 't' },
+ { "typedefs-and-c++", no_argument, NULL, 'T' },
+ { "update", no_argument, NULL, 'u' },
+ { "version", no_argument, NULL, 'V' },
+ { "vgrind", no_argument, NULL, 'v' },
+ { NULL }
};
+#endif /* LONG_OPTIONS */
#ifdef ETAGS_REGEXPS
/* Structure defining a regular expression. Elements are
the compiled pattern, and the name string. */
-struct pattern
+typedef struct pattern
{
- struct re_pattern_buffer *pattern;
+ struct pattern *p_next;
+ language *lang;
+ char *regex;
+ struct re_pattern_buffer *pat;
struct re_registers regs;
char *name_pattern;
- logical error_signaled;
-};
+ bool error_signaled;
+} pattern;
-/* Number of regexps found. */
-int num_patterns = 0;
+/* List of all regexps. */
+static pattern *p_head = NULL;
-/* Array of all regexps. */
-struct pattern *patterns = NULL;
+/* How many characters in the character set. (From regex.c.) */
+#define CHAR_SET_SIZE 256
+/* Translation table for case-insensitive matching. */
+static char lc_trans[CHAR_SET_SIZE];
#endif /* ETAGS_REGEXPS */
+static compressor compressors[] =
+{
+ { "z", "gzip -d -c"},
+ { "Z", "gzip -d -c"},
+ { "gz", "gzip -d -c"},
+ { "GZ", "gzip -d -c"},
+ { "bz2", "bzip2 -d -c" },
+ { NULL }
+};
+
/*
* Language stuff.
*/
/* Non-NULL if language fixed. */
-Lang_function *lang_func = NULL;
+static language *forced_lang = NULL;
+
+/* Ada code */
+static char *Ada_suffixes [] =
+ { "ads", "adb", "ada", NULL };
/* Assembly code */
-char *Asm_suffixes [] = { "a", /* Unix assembler */
- "asm", /* Microcontroller assembly */
- "def", /* BSO/Tasking definition includes */
- "inc", /* Microcontroller include files */
- "ins", /* Microcontroller include files */
- "s", "sa", /* Unix assembler */
- "src", /* BSO/Tasking C compiler output */
- NULL
- };
+static char *Asm_suffixes [] =
+ { "a", /* Unix assembler */
+ "asm", /* Microcontroller assembly */
+ "def", /* BSO/Tasking definition includes */
+ "inc", /* Microcontroller include files */
+ "ins", /* Microcontroller include files */
+ "s", "sa", /* Unix assembler */
+ "S", /* cpp-processed Unix assembler */
+ "src", /* BSO/Tasking C compiler output */
+ NULL
+ };
/* Note that .c and .h can be considered C++, if the --c++ flag was
- given. That is why default_C_entries is called here. */
-char *default_C_suffixes [] =
+ given, or if the `class' keyowrd is met inside the file.
+ That is why default_C_entries is called for these. */
+static char *default_C_suffixes [] =
{ "c", "h", NULL };
-/* .M is for Objective C++ files. */
-char *Cplusplus_suffixes [] =
- { "C", "H", "c++", "cc", "cpp", "cxx", "h++", "hh", "hpp", "hxx", "M", NULL};
+static char *Cplusplus_suffixes [] =
+ { "C", "c++", "cc", "cpp", "cxx", "H", "h++", "hh", "hpp", "hxx",
+ "M", /* Objective C++ */
+ "pdb", /* Postscript with C syntax */
+ NULL };
+
+static char *Cjava_suffixes [] =
+ { "java", NULL };
+
+static char *Cobol_suffixes [] =
+ { "COB", "cob", NULL };
-char *Cstar_suffixes [] =
+static char *Cstar_suffixes [] =
{ "cs", "hs", NULL };
-char *Fortran_suffixes [] =
+static char *Erlang_suffixes [] =
+ { "erl", "hrl", NULL };
+
+static char *Fortran_suffixes [] =
{ "F", "f", "f90", "for", NULL };
-char *Lisp_suffixes [] =
- { "cl", "clisp", "el", "l", "lisp", "lsp", "ml", NULL };
+static char *Lisp_suffixes [] =
+ { "cl", "clisp", "el", "l", "lisp", "LSP", "lsp", "ml", NULL };
+
+static char *Makefile_filenames [] =
+ { "Makefile", "makefile", "GNUMakefile", "Makefile.in", "Makefile.am", NULL};
-char *Pascal_suffixes [] =
+static char *Pascal_suffixes [] =
{ "p", "pas", NULL };
-char *Perl_suffixes [] =
+static char *Perl_suffixes [] =
{ "pl", "pm", NULL };
-char *Perl_interpreters [] =
+
+static char *Perl_interpreters [] =
{ "perl", "@PERL@", NULL };
-char *plain_C_suffixes [] =
- { "pc", /* Pro*C file */
+static char *PHP_suffixes [] =
+ { "php", "php3", "php4", NULL };
+
+static char *plain_C_suffixes [] =
+ { "lm", /* Objective lex file */
"m", /* Objective C file */
- "lm", /* Objective lex file */
+ "pc", /* Pro*C file */
NULL };
-char *Prolog_suffixes [] =
+static char *Postscript_suffixes [] =
+ { "ps", "psw", NULL }; /* .psw is for PSWrap */
+
+static char *Prolog_suffixes [] =
{ "prolog", NULL };
+static char *Python_suffixes [] =
+ { "py", NULL };
+
/* Can't do the `SCM' or `scm' prefix with a version number. */
-char *Scheme_suffixes [] =
- { "SCM", "SM", "oak", "sch", "scheme", "scm", "sm", "t", NULL };
+static char *Scheme_suffixes [] =
+ { "oak", "sch", "scheme", "SCM", "scm", "SM", "sm", "ss", "t", NULL };
-char *TeX_suffixes [] =
- { "TeX", "bib", "clo", "cls", "ltx", "sty", "tex", NULL };
+static char *TeX_suffixes [] =
+ { "bib", "clo", "cls", "ltx", "sty", "TeX", "tex", NULL };
-char *Yacc_suffixes [] =
- { "y", "ym", NULL }; /* .ym is Objective yacc file */
+static char *Texinfo_suffixes [] =
+ { "texi", "texinfo", "txi", NULL };
-/* Table of language names and corresponding functions, file suffixes
- and interpreter names.
- It is ok for a given function to be listed under more than one
- name. I just didn't. */
-struct lang_entry
-{
- char *name;
- Lang_function *function;
- char **suffixes;
- char **interpreters;
-};
+static char *Yacc_suffixes [] =
+ { "y", "y++", "ym", "yxx", "yy", NULL }; /* .ym is Objective yacc file */
-struct lang_entry lang_names [] =
+/*
+ * Table of languages.
+ *
+ * It is ok for a given function to be listed under more than one
+ * name. I just didn't.
+ */
+
+static language lang_names [] =
{
- { "asm", Asm_labels, Asm_suffixes, NULL },
- { "c", default_C_entries, default_C_suffixes, NULL },
- { "c++", Cplusplus_entries, Cplusplus_suffixes, NULL },
- { "c*", Cstar_entries, Cstar_suffixes, NULL },
- { "fortran", Fortran_functions, Fortran_suffixes, NULL },
- { "lisp", Lisp_functions, Lisp_suffixes, NULL },
- { "pascal", Pascal_functions, Pascal_suffixes, NULL },
- { "perl", Perl_functions, Perl_suffixes, Perl_interpreters },
- { "proc", plain_C_entries, plain_C_suffixes, NULL },
- { "prolog", Prolog_functions, Prolog_suffixes, NULL },
- { "scheme", Scheme_functions, Scheme_suffixes, NULL },
- { "tex", TeX_functions, TeX_suffixes, NULL },
- { "yacc", Yacc_entries, Yacc_suffixes, NULL },
+ { "ada", Ada_funcs, NULL, Ada_suffixes, NULL },
+ { "asm", Asm_labels, NULL, Asm_suffixes, NULL },
+ { "c", default_C_entries, NULL, default_C_suffixes, NULL },
+ { "c++", Cplusplus_entries, NULL, Cplusplus_suffixes, NULL },
+ { "c*", Cstar_entries, NULL, Cstar_suffixes, NULL },
+ { "cobol", Cobol_paragraphs, NULL, Cobol_suffixes, NULL },
+ { "erlang", Erlang_functions, NULL, Erlang_suffixes, NULL },
+ { "fortran", Fortran_functions, NULL, Fortran_suffixes, NULL },
+ { "java", Cjava_entries, NULL, Cjava_suffixes, NULL },
+ { "lisp", Lisp_functions, NULL, Lisp_suffixes, NULL },
+ { "makefile", Makefile_targets, Makefile_filenames, NULL, NULL },
+ { "pascal", Pascal_functions, NULL, Pascal_suffixes, NULL },
+ { "perl", Perl_functions, NULL, Perl_suffixes, Perl_interpreters },
+ { "php", PHP_functions, NULL, PHP_suffixes, NULL },
+ { "postscript", Postscript_functions, NULL, Postscript_suffixes, NULL },
+ { "proc", plain_C_entries, NULL, plain_C_suffixes, NULL },
+ { "prolog", Prolog_functions, NULL, Prolog_suffixes, NULL },
+ { "python", Python_functions, NULL, Python_suffixes, NULL },
+ { "scheme", Scheme_functions, NULL, Scheme_suffixes, NULL },
+ { "tex", TeX_commands, NULL, TeX_suffixes, NULL },
+ { "texinfo", Texinfo_nodes, NULL, Texinfo_suffixes, NULL },
+ { "yacc", Yacc_entries, NULL, Yacc_suffixes, NULL },
{ "auto", NULL }, /* default guessing scheme */
{ "none", just_read_file }, /* regexp matching only */
{ NULL, NULL } /* end of list */
};
\f
-void
+static void
print_language_names ()
{
- struct lang_entry *lang;
- char **ext;
+ language *lang;
+ char **name, **ext;
puts ("\nThese are the currently supported languages, along with the\n\
-default file name suffixes:");
+default file names and dot suffixes:");
for (lang = lang_names; lang->name != NULL; lang++)
{
- printf ("\t%s\t", lang->name);
+ printf (" %-*s", 10, lang->name);
+ if (lang->filenames != NULL)
+ for (name = lang->filenames; *name != NULL; name++)
+ printf (" %s", *name);
if (lang->suffixes != NULL)
for (ext = lang->suffixes; *ext != NULL; ext++)
printf (" .%s", *ext);
If no language is specified and no matching suffix is found,\n\
the first line of the file is read for a sharp-bang (#!) sequence\n\
followed by the name of an interpreter. If no such sequence is found,\n\
-Fortran is tried first; if no tags are found, C is tried next.");
+Fortran is tried first; if no tags are found, C is tried next.\n\
+When parsing any C file, a \"class\" keyword switches to C++.\n\
+Compressed files are supported using gzip and bzip2.");
}
+#ifndef EMACS_NAME
+# define EMACS_NAME "GNU Emacs"
+#endif
#ifndef VERSION
-# define VERSION "19"
+# define VERSION "21"
#endif
-void
+static void
print_version ()
{
- printf ("%s for Emacs version %s\n", (CTAGS) ? "ctags" : "etags", VERSION);
+ printf ("%s (%s %s)\n", (CTAGS) ? "ctags" : "etags", EMACS_NAME, VERSION);
+ puts ("Copyright (C) 1999 Free Software Foundation, Inc. and Ken Arnold");
+ puts ("This program is distributed under the same terms as Emacs");
exit (GOOD);
}
-void
+static void
print_help ()
{
- printf ("These are the options accepted by %s. You may use unambiguous\n\
-abbreviations for the long option names. A - as file name means read\n\
-names from stdin.\n\n", progname);
+ printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\
+\n\
+These are the options accepted by %s.\n", progname, progname);
+#ifdef LONG_OPTIONS
+ puts ("You may use unambiguous abbreviations for the long option names.");
+#else
+ puts ("Long option names do not work with this executable, as it is not\n\
+linked with GNU getopt.");
+#endif /* LONG_OPTIONS */
+ puts ("A - as file name means read names from stdin (one per line).");
+ if (!CTAGS)
+ printf (" Absolute names are stored in the output file as they are.\n\
+Relative ones are stored relative to the output file's directory.");
+ puts ("\n");
puts ("-a, --append\n\
Append tag entries to existing tags file.");
+ puts ("--packages-only\n\
+ For Ada files, only generate tags for packages .");
+
if (CTAGS)
puts ("-B, --backward-search\n\
Write the search commands for the tag entries using '?', the\n\
backward-search command instead of '/', the forward-search command.");
+ /* This option is mostly obsolete, because etags can now automatically
+ detect C++. Retained for backward compatibility and for debugging and
+ experimentation. In principle, we could want to tag as C++ even
+ before any "class" keyword.
puts ("-C, --c++\n\
Treat files whose name suffix defaults to C language as C++ files.");
+ */
+
+ puts ("--declarations\n\
+ In C and derived languages, create tags for function declarations,");
+ if (CTAGS)
+ puts ("\tand create tags for extern variables if --globals is used.");
+ else
+ puts
+ ("\tand create tags for extern variables unless --no-globals is used.");
if (CTAGS)
puts ("-d, --defines\n\
- Create tag entries for constant C #defines, too.");
+ Create tag entries for C #define constants and enum constants, too.");
else
puts ("-D, --no-defines\n\
- Don't create tag entries for constant C #defines. This makes\n\
- the tags file smaller.");
+ Don't create tag entries for C #define constants and enum constants.\n\
+ This makes the tags file smaller.");
if (!CTAGS)
{
named language up to the next --language=LANG option.");
}
+ if (CTAGS)
+ puts ("--globals\n\
+ Create tag entries for global variables in some languages.");
+ else
+ puts ("--no-globals\n\
+ Do not create tag entries for global variables in some\n\
+ languages. This makes the tags file smaller.");
+ puts ("--members\n\
+ Create tag entries for member variables in C and derived languages.");
+
#ifdef ETAGS_REGEXPS
- puts ("-r /REGEXP/, --regex=/REGEXP/\n\
- Make a tag for each line matching pattern REGEXP in the\n\
- following files. REGEXP is anchored (as if preceded by ^).\n\
- The form /REGEXP/NAME/ creates a named tag. For example Tcl\n\
- named tags can be created with:\n\
- --regex=/proc[ \\t]+\\([^ \\t]+\\)/\\1/.");
+ puts ("-r /REGEXP/, --regex=/REGEXP/ or --regex=@regexfile\n\
+ Make a tag for each line matching pattern REGEXP in the following\n\
+ files. {LANGUAGE}/REGEXP/ uses REGEXP for LANGUAGE files only.\n\
+ regexfile is a file containing one REGEXP per line.\n\
+ REGEXP is anchored (as if preceded by ^).\n\
+ The form /REGEXP/NAME/ creates a named tag.\n\
+ For example Tcl named tags can be created with:\n\
+ --regex=\"/proc[ \\t]+\\([^ \\t]+\\)/\\1/.\"");
+ puts ("-c /REGEXP/, --ignore-case-regex=/REGEXP/ or --ignore-case-regex=@regexfile\n\
+ Like -r, --regex but ignore case when matching expressions.");
puts ("-R, --no-regex\n\
Don't create tags from regexps for the following files.");
#endif /* ETAGS_REGEXPS */
if (CTAGS)
{
puts ("-t, --typedefs\n\
- Generate tag entries for C typedefs.");
+ Generate tag entries for C and Ada typedefs.");
puts ("-T, --typedefs-and-c++\n\
Generate tag entries for C typedefs, C struct/enum/union tags,\n\
and C++ member functions.");
print_language_names ();
+ puts ("");
+ puts ("Report bugs to bug-gnu-emacs@gnu.org");
+
exit (GOOD);
}
{
at_language,
at_regexp,
- at_filename
+ at_filename,
+ at_icregexp
};
-/* This structure helps us allow mixing of --lang and filenames. */
+/* This structure helps us allow mixing of --lang and file names. */
typedef struct
{
enum argument_type arg_type;
char *what;
- Lang_function *function;
+ language *lang; /* language of the regexp */
} argument;
#ifdef VMS /* VMS specific functions */
/*
v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
- returning in each successive call the next filename matching the input
+ returning in each successive call the next file name matching the input
spec. The function expects that each in_spec passed
to it will be processed to completion; in particular, up to and
including the call following that in which the last matching name
If an error occurs, on return out_spec contains the value
of in_spec when the error occurred.
- With each successive filename returned in out_spec, the
+ With each successive file name returned in out_spec, the
function's return value is one. When there are no more matching
names the function returns zero. If on the first call no file
matches in_spec, or there is any other error, -1 is returned.
#include <rmsdef.h>
#include <descrip.h>
#define OUTSIZE MAX_FILE_SPEC_LEN
-short
+static short
fn_exp (out, in)
vspec *out;
char *in;
static long context = 0;
static struct dsc$descriptor_s o;
static struct dsc$descriptor_s i;
- static logical pass1 = TRUE;
+ static bool pass1 = TRUE;
long status;
short retval;
v1.01 nmm 19-Aug-85 gfnames - return in successive calls the
name of each file specified by the provided arg expanding wildcards.
*/
-char *
+static char *
gfnames (arg, p_error)
char *arg;
- logical *p_error;
+ bool *p_error;
{
static vspec filename = {MAX_FILE_SPEC_LEN, "\0"};
system (cmd)
char *cmd;
{
- fprintf (stderr, "system() function not implemented under VMS\n");
+ error ("%s", "system() function not implemented under VMS");
}
#endif
#endif /* VMS */
\f
-void
+int
main (argc, argv)
int argc;
char *argv[];
{
int i;
- unsigned int nincluded_files = 0;
- char **included_files = xnew (argc, char *);
+ unsigned int nincluded_files;
+ char **included_files;
char *this_file;
argument *argbuffer;
- int current_arg = 0, file_count = 0;
- struct linebuffer filename_lb;
+ int current_arg, file_count;
+ linebuffer filename_lb;
#ifdef VMS
- logical got_err;
+ bool got_err;
#endif
#ifdef DOS_NT
#endif /* DOS_NT */
progname = argv[0];
+ nincluded_files = 0;
+ included_files = xnew (argc, char *);
+ current_arg = 0;
+ file_count = 0;
/* Allocate enough no matter what happens. Overkill, but each one
is small. */
#ifdef ETAGS_REGEXPS
/* Set syntax for regular expression routines. */
- re_set_syntax (RE_SYNTAX_EMACS);
+ re_set_syntax (RE_SYNTAX_EMACS | RE_INTERVALS);
+ /* Translation table for case-insensitive search. */
+ for (i = 0; i < CHAR_SET_SIZE; i++)
+ lc_trans[i] = lowcase (i);
#endif /* ETAGS_REGEXPS */
/*
* If etags, always find typedefs and structure tags. Why not?
- * Also default is to find macro constants.
+ * Also default to find macro constants, enum constants and
+ * global variables.
*/
if (!CTAGS)
- typedefs = typedefs_and_cplusplus = constantypedefs = TRUE;
+ {
+ typedefs = typedefs_or_cplusplus = constantypedefs = TRUE;
+ globals = TRUE;
+ declarations = FALSE;
+ members = FALSE;
+ }
while (1)
{
- int opt = getopt_long (argc, argv,
- "-aCdDf:Il:o:r:RStTi:BuvxwVhH", longopts, 0);
+ int opt;
+ char *optstring;
+#ifdef ETAGS_REGEXPS
+ optstring = "-aCdDf:Il:o:r:c:RStTi:BuvxwVhH";
+#else
+ optstring = "-aCdDf:Il:o:StTi:BuvxwVhH";
+#endif /* ETAGS_REGEXPS */
+
+#ifndef LONG_OPTIONS
+ optstring = optstring + 1;
+#endif /* LONG_OPTIONS */
+
+ opt = getopt_long (argc, argv, optstring, longopts, 0);
if (opt == EOF)
break;
break;
case 1:
- /* This means that a filename has been seen. Record it. */
+ /* This means that a file name has been seen. Record it. */
argbuffer[current_arg].arg_type = at_filename;
argbuffer[current_arg].what = optarg;
++current_arg;
break;
/* Common options. */
- case 'a':
- append_to_tagfile = TRUE;
- break;
- case 'C':
- cplusplus = TRUE;
- break;
- case 'd':
- constantypedefs = TRUE;
- break;
- case 'D':
- constantypedefs = FALSE;
- break;
+ case 'a': append_to_tagfile = TRUE; break;
+ case 'C': cplusplus = TRUE; break;
+ case 'd': constantypedefs = TRUE; break;
+ case 'D': constantypedefs = FALSE; break;
case 'f': /* for compatibility with old makefiles */
case 'o':
if (tagfile)
{
- fprintf (stderr, "%s: -%c option may only be given once.\n",
- progname, opt);
+ error ("-o option may only be given once.", (char *)NULL);
suggest_asking_for_help ();
}
tagfile = optarg;
noindentypedefs = TRUE;
break;
case 'l':
- argbuffer[current_arg].function = get_language_from_name (optarg);
- argbuffer[current_arg].arg_type = at_language;
- ++current_arg;
+ {
+ language *lang = get_language_from_langname (optarg);
+ if (lang != NULL)
+ {
+ argbuffer[current_arg].lang = lang;
+ argbuffer[current_arg].arg_type = at_language;
+ ++current_arg;
+ }
+ }
break;
-#ifdef ETAGS_REGEXPS
case 'r':
argbuffer[current_arg].arg_type = at_regexp;
argbuffer[current_arg].what = optarg;
argbuffer[current_arg].what = NULL;
++current_arg;
break;
-#endif /* ETAGS_REGEXPS */
+ case 'c':
+ argbuffer[current_arg].arg_type = at_icregexp;
+ argbuffer[current_arg].what = optarg;
+ ++current_arg;
+ break;
case 'V':
print_version ();
break;
typedefs = TRUE;
break;
case 'T':
- typedefs = typedefs_and_cplusplus = TRUE;
+ typedefs = typedefs_or_cplusplus = TRUE;
break;
-#if (!CTAGS)
/* Etags options */
case 'i':
included_files[nincluded_files++] = optarg;
break;
-#else /* CTAGS */
/* Ctags options. */
- case 'B':
- searchar = '?';
- break;
- case 'u':
- update = TRUE;
- break;
- case 'v':
- vgrind_style = TRUE;
- /*FALLTHRU*/
- case 'x':
- cxref_style = TRUE;
- break;
- case 'w':
- no_warnings = TRUE;
- break;
-#endif /* CTAGS */
+ case 'B': searchar = '?'; break;
+ case 'u': update = TRUE; break;
+ case 'v': vgrind_style = TRUE; /*FALLTHRU*/
+ case 'x': cxref_style = TRUE; break;
+ case 'w': no_warnings = TRUE; break;
default:
suggest_asking_for_help ();
}
if (nincluded_files == 0 && file_count == 0)
{
- fprintf (stderr, "%s: No input files specified.\n", progname);
+ error ("no input files specified.", (char *)NULL);
suggest_asking_for_help ();
}
if (tagfile == NULL)
- {
- tagfile = CTAGS ? "tags" : "TAGS";
- }
+ tagfile = CTAGS ? "tags" : "TAGS";
cwd = etags_getcwd (); /* the current working directory */
- strcat (cwd, "/");
- if (streq (tagfile, "-"))
+ if (cwd[strlen (cwd) - 1] != '/')
{
- tagfiledir = cwd;
+ char *oldcwd = cwd;
+ cwd = concat (oldcwd, "/", "");
+ free (oldcwd);
}
+ if (streq (tagfile, "-"))
+ tagfiledir = cwd;
else
- {
- tagfiledir = absolute_dirname (tagfile, cwd);
- }
+ tagfiledir = absolute_dirname (tagfile, cwd);
init (); /* set up boolean "functions" */
initbuffer (&lb);
- initbuffer (&token_name);
- initbuffer (&lbs[0].lb);
- initbuffer (&lbs[1].lb);
initbuffer (&filename_lb);
if (!CTAGS)
{
if (streq (tagfile, "-"))
- tagf = stdout;
+ {
+ tagf = stdout;
+#ifdef DOS_NT
+ /* Switch redirected `stdout' to binary mode (setting `_fmode'
+ doesn't take effect until after `stdout' is already open). */
+ if (!isatty (fileno (stdout)))
+ setmode (fileno (stdout), O_BINARY);
+#endif /* DOS_NT */
+ }
else
tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
if (tagf == NULL)
switch (argbuffer[i].arg_type)
{
case at_language:
- lang_func = argbuffer[i].function;
+ forced_lang = argbuffer[i].lang;
break;
#ifdef ETAGS_REGEXPS
case at_regexp:
- add_regex (argbuffer[i].what);
+ analyse_regex (argbuffer[i].what, FALSE);
+ break;
+ case at_icregexp:
+ analyse_regex (argbuffer[i].what, TRUE);
break;
#endif
case at_filename:
{
if (got_err)
{
- error ("Can't find file %s\n", this_file);
+ error ("can't find file %s\n", this_file);
argc--, argv++;
}
else
this_file = argbuffer[i].what;
#endif
/* Input file named "-" means read file names from stdin
- and use them. */
+ (one per line) and use them. */
if (streq (this_file, "-"))
while (readline_internal (&filename_lb, stdin) > 0)
process_file (filename_lb.buffer);
}
}
- if (!CTAGS)
- {
- while (nincluded_files-- > 0)
- fprintf (tagf, "\f\n%s,include\n", *included_files++);
-
- fclose (tagf);
- exit (GOOD);
- }
+#ifdef ETAGS_REGEXPS
+ free_patterns ();
+#endif /* ETAGS_REGEXPS */
- /* If CTAGS, we are here. process_file did not write the tags yet,
- because we want them ordered. Let's do it now. */
- if (cxref_style)
+ if (!CTAGS || cxref_style)
{
- tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
- if (tagf == NULL)
- pfatal (tagfile);
put_entries (head);
+ free_tree (head);
+ head = NULL;
+ if (!CTAGS)
+ while (nincluded_files-- > 0)
+ fprintf (tagf, "\f\n%s,include\n", *included_files++);
+
+ if (fclose (tagf) == EOF)
+ pfatal (tagfile);
exit (GOOD);
}
"mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
tagfile, argbuffer[i].what, tagfile);
if (system (cmd) != GOOD)
- fatal ("failed to execute shell command");
+ fatal ("failed to execute shell command", (char *)NULL);
}
append_to_tagfile = TRUE;
}
if (tagf == NULL)
pfatal (tagfile);
put_entries (head);
- fclose (tagf);
+ free_tree (head);
+ head = NULL;
+ if (fclose (tagf) == EOF)
+ pfatal (tagfile);
if (update)
{
char cmd[BUFSIZ];
- sprintf (cmd, "sort %s -o %s", tagfile, tagfile);
+ sprintf (cmd, "sort -o %s %s", tagfile, tagfile);
exit (system (cmd));
}
- exit (GOOD);
+ return GOOD;
}
+
/*
- * Return a Lang_function given the name.
+ * Return a compressor given the file name. If EXTPTR is non-zero,
+ * return a pointer into FILE where the compressor-specific
+ * extension begins. If no compressor is found, NULL is returned
+ * and EXTPTR is not significant.
+ * Idea by Vladimir Alexiev <vladimir@cs.ualberta.ca> (1998)
*/
-Lang_function *
-get_language_from_name (name)
- char *name;
+static compressor *
+get_compressor_from_suffix (file, extptr)
+ char *file;
+ char **extptr;
{
- struct lang_entry *lang;
+ compressor *compr;
+ char *slash, *suffix;
+
+ /* This relies on FN to be after canonicalize_filename,
+ so we don't need to consider backslashes on DOS_NT. */
+ slash = etags_strrchr (file, '/');
+ suffix = etags_strrchr (file, '.');
+ if (suffix == NULL || suffix < slash)
+ return NULL;
+ if (extptr != NULL)
+ *extptr = suffix;
+ suffix += 1;
+ /* Let those poor souls who live with DOS 8+3 file name limits get
+ some solace by treating foo.cgz as if it were foo.c.gz, etc.
+ Only the first do loop is run if not MSDOS */
+ do
+ {
+ for (compr = compressors; compr->suffix != NULL; compr++)
+ if (streq (compr->suffix, suffix))
+ return compr;
+ if (!MSDOS)
+ break; /* do it only once: not really a loop */
+ if (extptr != NULL)
+ *extptr = ++suffix;
+ } while (*suffix != '\0');
+ return NULL;
+}
- if (name != NULL)
- for (lang = lang_names; lang->name != NULL; lang++)
- {
- if (streq (name, lang->name))
- return lang->function;
- }
- fprintf (stderr, "%s: language \"%s\" not recognized.\n",
- progname, optarg);
- suggest_asking_for_help ();
- /* This point should never be reached. The function should either
- return a function pointer or never return. Note that a NULL
- pointer cannot be considered as an error, as it means that the
- language has not been explicitely imposed by the user ("auto"). */
- return NULL; /* avoid warnings from compiler */
+/*
+ * Return a language given the name.
+ */
+static language *
+get_language_from_langname (name)
+ const char *name;
+{
+ language *lang;
+
+ if (name == NULL)
+ error ("empty language name", (char *)NULL);
+ else
+ {
+ for (lang = lang_names; lang->name != NULL; lang++)
+ if (streq (name, lang->name))
+ return lang;
+ error ("unknown language \"%s\"", name);
+ }
+
+ return NULL;
}
/*
- * Return a Lang_function given the interpreter name.
+ * Return a language given the interpreter name.
*/
-Lang_function *
+static language *
get_language_from_interpreter (interpreter)
char *interpreter;
{
- struct lang_entry *lang;
+ language *lang;
char **iname;
if (interpreter == NULL)
if (lang->interpreters != NULL)
for (iname = lang->interpreters; *iname != NULL; iname++)
if (streq (*iname, interpreter))
- return lang->function;
+ return lang;
return NULL;
}
/*
- * Return a Lang_function given the file suffix.
+ * Return a language given the file name.
*/
-Lang_function *
-get_language_from_suffix (suffix)
- char *suffix;
+static language *
+get_language_from_filename (file)
+ char *file;
{
- struct lang_entry *lang;
- char **ext;
+ language *lang;
+ char **name, **ext, *suffix;
+
+ /* Try whole file name first. */
+ for (lang = lang_names; lang->name != NULL; lang++)
+ if (lang->filenames != NULL)
+ for (name = lang->filenames; *name != NULL; name++)
+ if (streq (*name, file))
+ return lang;
+ /* If not found, try suffix after last dot. */
+ suffix = etags_strrchr (file, '.');
if (suffix == NULL)
return NULL;
+ suffix += 1;
for (lang = lang_names; lang->name != NULL; lang++)
if (lang->suffixes != NULL)
for (ext = lang->suffixes; *ext != NULL; ext++)
if (streq (*ext, suffix))
- return lang->function;
-
+ return lang;
return NULL;
}
+
/*
* This routine is called on each file argument.
*/
-void
+static void
process_file (file)
char *file;
{
struct stat stat_buf;
FILE *inf;
+ compressor *compr;
+ char *compressed_name, *uncompressed_name;
+ char *ext, *real_name;
+ int retval;
- if (stat (file, &stat_buf) == 0 && !S_ISREG (stat_buf.st_mode))
+
+ canonicalize_filename (file);
+ if (streq (file, tagfile) && !streq (tagfile, "-"))
{
- fprintf (stderr, "Skipping %s: it is not a regular file.\n", file);
+ error ("skipping inclusion of %s in self.", file);
return;
}
- if (streq (file, tagfile) && !streq (tagfile, "-"))
+ if ((compr = get_compressor_from_suffix (file, &ext)) == NULL)
{
- fprintf (stderr, "Skipping inclusion of %s in self.\n", file);
- return;
+ compressed_name = NULL;
+ real_name = uncompressed_name = savestr (file);
}
- inf = fopen (file, "r");
- if (inf == NULL)
+ else
{
- perror (file);
- return;
+ real_name = compressed_name = savestr (file);
+ uncompressed_name = savenstr (file, ext - file);
}
- find_entries (file, inf);
-
- if (!CTAGS)
+ /* If the canonicalized uncompressed name has already be dealt with,
+ skip it silently, else add it to the list. */
+ {
+ typedef struct processed_file
{
char *filename;
+ struct processed_file *next;
+ } processed_file;
+ static processed_file *pf_head = NULL;
+ register processed_file *fnp;
+
+ for (fnp = pf_head; fnp != NULL; fnp = fnp->next)
+ if (streq (uncompressed_name, fnp->filename))
+ goto exit;
+ fnp = pf_head;
+ pf_head = xnew (1, struct processed_file);
+ pf_head->filename = savestr (uncompressed_name);
+ pf_head->next = fnp;
+ }
- if (absolutefn (file))
+ if (stat (real_name, &stat_buf) != 0)
+ {
+ /* Reset real_name and try with a different name. */
+ real_name = NULL;
+ if (compressed_name != NULL) /* try with the given suffix */
{
- /* file is an absolute filename. Canonicalise it. */
- filename = absolute_filename (file, cwd);
+ if (stat (uncompressed_name, &stat_buf) == 0)
+ real_name = uncompressed_name;
}
- else
+ else /* try all possible suffixes */
+ {
+ for (compr = compressors; compr->suffix != NULL; compr++)
+ {
+ compressed_name = concat (file, ".", compr->suffix);
+ if (stat (compressed_name, &stat_buf) != 0)
+ {
+ if (MSDOS)
+ {
+ char *suf = compressed_name + strlen (file);
+ size_t suflen = strlen (compr->suffix) + 1;
+ for ( ; suf[1]; suf++, suflen--)
+ {
+ memmove (suf, suf + 1, suflen);
+ if (stat (compressed_name, &stat_buf) == 0)
+ {
+ real_name = compressed_name;
+ break;
+ }
+ }
+ if (real_name != NULL)
+ break;
+ } /* MSDOS */
+ free (compressed_name);
+ compressed_name = NULL;
+ }
+ else
+ {
+ real_name = compressed_name;
+ break;
+ }
+ }
+ }
+ if (real_name == NULL)
{
- /* file is a filename relative to cwd. Make it relative
- to the directory of the tags file. */
- filename = relative_filename (file, tagfiledir);
+ perror (file);
+ goto exit;
}
- fprintf (tagf, "\f\n%s,%d\n", filename, total_size_of_entries (head));
- free (filename);
- put_entries (head);
- free_tree (head);
- head = NULL;
+ } /* try with a different name */
+
+ if (!S_ISREG (stat_buf.st_mode))
+ {
+ error ("skipping %s: it is not a regular file.", real_name);
+ goto exit;
+ }
+ if (real_name == compressed_name)
+ {
+ char *cmd = concat (compr->command, " ", real_name);
+ inf = (FILE *) popen (cmd, "r");
+ free (cmd);
+ }
+ else
+ inf = fopen (real_name, "r");
+ if (inf == NULL)
+ {
+ perror (real_name);
+ goto exit;
+ }
+
+ curfile = uncompressed_name;
+ curfiledir = absolute_dirname (curfile, cwd);
+ if (filename_is_absolute (curfile))
+ {
+ /* file is an absolute file name. Canonicalize it. */
+ curtagfname = absolute_filename (curfile, NULL);
+ }
+ else
+ {
+ /* file is a file name relative to cwd. Make it relative
+ to the directory of the tags file. */
+ curtagfname = relative_filename (curfile, tagfiledir);
}
+ nocharno = FALSE; /* use char position when making tags */
+ find_entries (curfile, inf);
+
+ free (curfiledir);
+ if (real_name == compressed_name)
+ retval = pclose (inf);
+ else
+ retval = fclose (inf);
+ if (retval < 0)
+ pfatal (file);
+
+ exit:
+ if (compressed_name) free(compressed_name);
+ if (uncompressed_name) free(uncompressed_name);
+ return;
}
/*
* This routine sets up the boolean pseudo-functions which work
- * by setting boolean flags dependent upon the corresponding character
+ * by setting boolean flags dependent upon the corresponding character.
* Every char which is NOT in that string is not a white char. Therefore,
* all of the array "_wht" is set to FALSE, and then the elements
* subscripted by the chars in "white" are set to TRUE. Thus "_wht"
* of a char is TRUE if it is the string "white", else FALSE.
*/
-void
+static void
init ()
{
register char *sp;
register int i;
- for (i = 0; i < 0177; i++)
- _wht[i] = _etk[i] = _itk[i] = _btk[i] = FALSE;
- for (sp = white; *sp; sp++)
- _wht[*sp] = TRUE;
- for (sp = endtk; *sp; sp++)
- _etk[*sp] = TRUE;
- for (sp = intk; *sp; sp++)
- _itk[*sp] = TRUE;
- for (sp = begtk; *sp; sp++)
- _btk[*sp] = TRUE;
- _wht[0] = _wht['\n'];
- _etk[0] = _etk['\n'];
- _btk[0] = _btk['\n'];
- _itk[0] = _itk['\n'];
+ for (i = 0; i < CHARS; i++)
+ iswhite(i) = notinname(i) = begtoken(i) = intoken(i) = endtoken(i) = FALSE;
+ for (sp = white; *sp != '\0'; sp++) iswhite (*sp) = TRUE;
+ for (sp = nonam; *sp != '\0'; sp++) notinname (*sp) = TRUE;
+ notinname('\0') = notinname('\n');
+ for (sp = begtk; *sp != '\0'; sp++) begtoken (*sp) = TRUE;
+ begtoken('\0') = begtoken('\n');
+ for (sp = midtk; *sp != '\0'; sp++) intoken (*sp) = TRUE;
+ intoken('\0') = intoken('\n');
+ for (sp = endtk; *sp != '\0'; sp++) endtoken (*sp) = TRUE;
+ endtoken('\0') = endtoken('\n');
}
/*
* This routine opens the specified file and calls the function
* which finds the function and type definitions.
*/
-void
+static node *last_node = NULL;
+
+static void
find_entries (file, inf)
char *file;
FILE *inf;
{
char *cp;
- Lang_function *function;
- NODE *old_last_node;
- extern NODE *last_node;
-
-
- /* Memory leakage here: the memory block pointed by curfile is never
- released. The amount of memory leaked here is the sum of the
- lengths of the input file names. */
- curfile = savestr (file);
+ language *lang;
+ node *old_last_node;
/* If user specified a language, use it. */
- function = lang_func;
- if (function != NULL)
+ lang = forced_lang;
+ if (lang != NULL && lang->function != NULL)
{
- function (inf);
- fclose (inf);
+ curlang = lang;
+ lang->function (inf);
return;
}
- cp = etags_strrchr (file, '.');
- if (cp != NULL)
+ /* Try to guess the language given the file name. */
+ lang = get_language_from_filename (file);
+ if (lang != NULL && lang->function != NULL)
{
- cp += 1;
- function = get_language_from_suffix (cp);
- if (function != NULL)
- {
- function (inf);
- fclose (inf);
- return;
- }
+ curlang = lang;
+ lang->function (inf);
+ return;
}
/* Look for sharp-bang as the first two characters. */
- if (readline_internal (&lb, inf) > 2
+ if (readline_internal (&lb, inf) > 0
+ && lb.len >= 2
&& lb.buffer[0] == '#'
&& lb.buffer[1] == '!')
{
if (lp != NULL)
lp += 1;
else
- for (lp = lb.buffer+2; *lp != '\0' && isspace (*lp); lp++)
- continue;
- for (cp = lp; *cp != '\0' && !isspace (*cp); cp++)
- continue;
+ lp = skip_spaces (lb.buffer + 2);
+ cp = skip_non_spaces (lp);
*cp = '\0';
if (strlen (lp) > 0)
{
- function = get_language_from_interpreter (lp);
- if (function != NULL)
+ lang = get_language_from_interpreter (lp);
+ if (lang != NULL && lang->function != NULL)
{
- function (inf);
- fclose (inf);
+ curlang = lang;
+ lang->function (inf);
return;
}
}
}
+ /* We rewind here, even if inf may be a pipe. We fail if the
+ length of the first line is longer than the pipe block size,
+ which is unlikely. */
rewind (inf);
/* Try Fortran. */
old_last_node = last_node;
+ curlang = get_language_from_langname ("fortran");
Fortran_functions (inf);
/* No Fortran entries found. Try C. */
if (old_last_node == last_node)
{
+ /* We do not tag if rewind fails.
+ Only the file name will be recorded in the tags file. */
rewind (inf);
+ curlang = get_language_from_langname (cplusplus ? "c++" : "c");
default_C_entries (inf);
}
- fclose (inf);
return;
}
+
\f
/* Record a tag. */
-void
+static void
pfnote (name, is_func, linestart, linelen, lno, cno)
char *name; /* tag name, or NULL if unnamed */
- logical is_func; /* tag is a function */
+ bool is_func; /* tag is a function */
char *linestart; /* start of the line where tag is */
int linelen; /* length of the line where tag is */
int lno; /* line number */
long cno; /* character number */
{
- register NODE *np;
+ register node *np;
if (CTAGS && name == NULL)
return;
- np = xnew (1, NODE);
+ np = xnew (1, node);
/* If ctags mode, change name "main" to M<thisfilename>. */
if (CTAGS && !cxref_style && streq (name, "main"))
{
- register char *fp = etags_strrchr (curfile, '/');
- np->name = concat ("M", fp == 0 ? curfile : fp + 1, "");
+ register char *fp = etags_strrchr (curtagfname, '/');
+ np->name = concat ("M", fp == NULL ? curtagfname : fp + 1, "");
fp = etags_strrchr (np->name, '.');
- if (fp && fp[1] != '\0' && fp[2] == '\0')
- fp[0] = 0;
+ if (fp != NULL && fp[1] != '\0' && fp[2] == '\0')
+ fp[0] = '\0';
}
else
np->name = name;
np->been_warned = FALSE;
- np->file = curfile;
+ np->file = curtagfname;
np->is_func = is_func;
np->lno = lno;
- /* Our char numbers are 0-base, because of C language tradition?
- ctags compatibility? old versions compatibility? I don't know.
- Anyway, since emacs's are 1-base we espect etags.el to take care
- of the difference. If we wanted to have 1-based numbers, we would
- uncomment the +1 below. */
- np->cno = cno /* + 1 */ ;
+ if (nocharno)
+ np->cno = invalidcharno;
+ else
+ /* Our char numbers are 0-base, because of C language tradition?
+ ctags compatibility? old versions compatibility? I don't know.
+ Anyway, since emacs's are 1-base we expect etags.el to take care
+ of the difference. If we wanted to have 1-based numbers, we would
+ uncomment the +1 below. */
+ np->cno = cno /* + 1 */ ;
np->left = np->right = NULL;
if (CTAGS && !cxref_style)
{
}
/*
- * free_tree ()
- * recurse on left children, iterate on right children.
+ * TAGS format specification
+ * Idea by Sam Kendall <kendall@mv.mv.com> (1997)
+ *
+ * pfnote should emit the optimized form [unnamed tag] only if:
+ * 1. name does not contain any of the characters " \t\r\n(),;";
+ * 2. linestart contains name as either a rightmost, or rightmost but
+ * one character, substring;
+ * 3. the character, if any, immediately before name in linestart must
+ * be one of the characters " \t(),;";
+ * 4. the character, if any, immediately after name in linestart must
+ * also be one of the characters " \t(),;".
+ *
+ * The real implementation uses the notinname() macro, which recognises
+ * characters slightly different from " \t\r\n(),;". See the variable
+ * `nonam'.
*/
-void
-free_tree (node)
- register NODE *node;
-{
- while (node)
- {
- register NODE *node_right = node->right;
- free_tree (node->left);
- if (node->name != NULL)
- free (node->name);
- free (node->pat);
- free ((char *) node);
- node = node_right;
- }
+#define traditional_tag_style TRUE
+static void
+new_pfnote (name, namelen, is_func, linestart, linelen, lno, cno)
+ char *name; /* tag name, or NULL if unnamed */
+ int namelen; /* tag length */
+ bool is_func; /* tag is a function */
+ char *linestart; /* start of the line where tag is */
+ int linelen; /* length of the line where tag is */
+ int lno; /* line number */
+ long cno; /* character number */
+{
+ register char *cp;
+ bool named;
+
+ named = TRUE;
+ if (!CTAGS)
+ {
+ for (cp = name; !notinname (*cp); cp++)
+ continue;
+ if (*cp == '\0') /* rule #1 */
+ {
+ cp = linestart + linelen - namelen;
+ if (notinname (linestart[linelen-1]))
+ cp -= 1; /* rule #4 */
+ if (cp >= linestart /* rule #2 */
+ && (cp == linestart
+ || notinname (cp[-1])) /* rule #3 */
+ && strneq (name, cp, namelen)) /* rule #2 */
+ named = FALSE; /* use unnamed tag */
+ }
+ }
+
+ if (named)
+ name = savenstr (name, namelen);
+ else
+ name = NULL;
+ pfnote (name, is_func, linestart, linelen, lno, cno);
+}
+
+/*
+ * free_tree ()
+ * recurse on left children, iterate on right children.
+ */
+static void
+free_tree (np)
+ register node *np;
+{
+ while (np)
+ {
+ register node *node_right = np->right;
+ free_tree (np->left);
+ if (np->name != NULL)
+ free (np->name);
+ free (np->pat);
+ free (np);
+ np = node_right;
+ }
}
/*
* add_node ()
- * Adds a node to the tree of nodes. In etags mode, we don't keep
- * it sorted; we just keep a linear list. In ctags mode, maintain
- * an ordered tree, with no attempt at balancing.
+ * Adds a node to the tree of nodes. In etags mode, sort by file
+ * name. In ctags mode, sort by tag name. Make no attempt at
+ * balancing.
*
* add_node is the only function allowed to add nodes, so it can
* maintain state.
*/
-NODE *last_node = NULL;
-void
-add_node (node, cur_node_p)
- NODE *node, **cur_node_p;
+static void
+add_node (np, cur_node_p)
+ node *np, **cur_node_p;
{
register int dif;
- register NODE *cur_node = *cur_node_p;
+ register node *cur_node = *cur_node_p;
if (cur_node == NULL)
{
- *cur_node_p = node;
- last_node = node;
+ *cur_node_p = np;
+ last_node = np;
return;
}
if (!CTAGS)
{
/* Etags Mode */
- if (last_node == NULL)
- fatal ("internal error in add_node", 0);
- last_node->right = node;
- last_node = node;
+ assert (last_node != NULL);
+ /* For each file name, tags are in a linked sublist on the right
+ pointer. The first tags of different files are a linked list
+ on the left pointer. last_node points to the end of the last
+ used sublist. */
+ if (last_node->file == np->file)
+ {
+ /* Let's use the same sublist as the last added node. */
+ last_node->right = np;
+ last_node = np;
+ }
+ else if (streq (cur_node->file, np->file))
+ {
+ /* Scanning the list we found the head of a sublist which is
+ good for us. Let's scan this sublist. */
+ add_node (np, &cur_node->right);
+ }
+ else
+ /* The head of this sublist is not good for us. Let's try the
+ next one. */
+ add_node (np, &cur_node->left);
}
else
{
/* Ctags Mode */
- dif = strcmp (node->name, cur_node->name);
+ dif = strcmp (np->name, cur_node->name);
/*
* If this tag name matches an existing one, then
*/
if (!dif)
{
- if (streq (node->file, cur_node->file))
+ if (streq (np->file, cur_node->file))
{
if (!no_warnings)
{
fprintf (stderr, "Duplicate entry in file %s, line %d: %s\n",
- node->file, lineno, node->name);
+ np->file, lineno, np->name);
fprintf (stderr, "Second entry ignored\n");
}
}
fprintf
(stderr,
"Duplicate entry in files %s and %s: %s (Warning only)\n",
- node->file, cur_node->file, node->name);
+ np->file, cur_node->file, np->name);
cur_node->been_warned = TRUE;
}
return;
}
/* Actually add the node */
- add_node (node, dif < 0 ? &cur_node->left : &cur_node->right);
+ add_node (np, dif < 0 ? &cur_node->left : &cur_node->right);
}
}
+
\f
-void
-put_entries (node)
- register NODE *node;
+static int total_size_of_entries __P((node *));
+static int number_len __P((long));
+
+/* Length of a number's decimal representation. */
+static int
+number_len (num)
+ long num;
+{
+ int len = 1;
+ while ((num /= 10) > 0)
+ len += 1;
+ return len;
+}
+
+/*
+ * Return total number of characters that put_entries will output for
+ * the nodes in the linked list at the right of the specified node.
+ * This count is irrelevant with etags.el since emacs 19.34 at least,
+ * but is still supplied for backward compatibility.
+ */
+static int
+total_size_of_entries (np)
+ register node *np;
+{
+ register int total = 0;
+
+ for (; np != NULL; np = np->right)
+ {
+ total += strlen (np->pat) + 1; /* pat\177 */
+ if (np->name != NULL)
+ total += strlen (np->name) + 1; /* name\001 */
+ total += number_len ((long) np->lno) + 1; /* lno, */
+ if (np->cno != invalidcharno) /* cno */
+ total += number_len (np->cno);
+ total += 1; /* newline */
+ }
+
+ return total;
+}
+
+static void
+put_entries (np)
+ register node *np;
{
register char *sp;
+ static char *file = NULL;
- if (node == NULL)
+ if (np == NULL)
return;
/* Output subentries that precede this one */
- put_entries (node->left);
+ if (CTAGS)
+ put_entries (np->left);
/* Output this entry */
-
if (!CTAGS)
{
- if (node->name != NULL)
- fprintf (tagf, "%s\177%s\001%d,%d\n",
- node->pat, node->name, node->lno, node->cno);
+ /* Etags mode */
+ if (file != np->file
+ && (file == NULL || !streq (file, np->file)))
+ {
+ file = np->file;
+ fprintf (tagf, "\f\n%s,%d\n",
+ file, total_size_of_entries (np));
+ }
+ fputs (np->pat, tagf);
+ fputc ('\177', tagf);
+ if (np->name != NULL)
+ {
+ fputs (np->name, tagf);
+ fputc ('\001', tagf);
+ }
+ fprintf (tagf, "%d,", np->lno);
+ if (np->cno == invalidcharno)
+ fputc ('\n', tagf);
else
- fprintf (tagf, "%s\177%d,%d\n",
- node->pat, node->lno, node->cno);
+ fprintf (tagf, "%ld\n", np->cno);
}
else
{
- if (node->name == NULL)
- error ("internal error: NULL name in ctags mode.", 0);
+ /* Ctags mode */
+ if (np->name == NULL)
+ error ("internal error: NULL name in ctags mode.", (char *)NULL);
if (cxref_style)
{
if (vgrind_style)
fprintf (stdout, "%s %s %d\n",
- node->name, node->file, (node->lno + 63) / 64);
+ np->name, np->file, (np->lno + 63) / 64);
else
fprintf (stdout, "%-16s %3d %-16s %s\n",
- node->name, node->lno, node->file, node->pat);
+ np->name, np->lno, np->file, np->pat);
}
else
{
- fprintf (tagf, "%s\t%s\t", node->name, node->file);
+ fprintf (tagf, "%s\t%s\t", np->name, np->file);
- if (node->is_func)
+ if (np->is_func)
{ /* a function */
putc (searchar, tagf);
putc ('^', tagf);
- for (sp = node->pat; *sp; sp++)
+ for (sp = np->pat; *sp; sp++)
{
if (*sp == '\\' || *sp == searchar)
putc ('\\', tagf);
}
else
{ /* a typedef; text pattern inadequate */
- fprintf (tagf, "%d", node->lno);
+ fprintf (tagf, "%d", np->lno);
}
putc ('\n', tagf);
}
}
- /* Output subentries that follow this one */
- put_entries (node->right);
-}
-/* Length of a number's decimal representation. */
-int
-number_len (num)
- long num;
-{
- int len = 0;
- if (!num)
- return 1;
- for (; num; num /= 10)
- ++len;
- return len;
+ /* Output subentries that follow this one */
+ put_entries (np->right);
+ if (!CTAGS)
+ put_entries (np->left);
}
-/*
- * Return total number of characters that put_entries will output for
- * the nodes in the subtree of the specified node. Works only if
- * we are not ctags, but called only in that case. This count
- * is irrelevant with the new tags.el, but is still supplied for
- * backward compatibility.
- */
-int
-total_size_of_entries (node)
- register NODE *node;
-{
- register int total;
-
- if (node == NULL)
- return 0;
-
- total = 0;
- for (; node; node = node->right)
- {
- /* Count left subentries. */
- total += total_size_of_entries (node->left);
-
- /* Count this entry */
- total += strlen (node->pat) + 1;
- total += number_len ((long) node->lno) + 1 + number_len (node->cno) + 1;
- if (node->name != NULL)
- total += 1 + strlen (node->name); /* \001name */
- }
-
- return total;
-}
\f
+/* C extensions. */
+#define C_EXT 0x00fff /* C extensions */
+#define C_PLAIN 0x00000 /* C */
+#define C_PLPL 0x00001 /* C++ */
+#define C_STAR 0x00003 /* C* */
+#define C_JAVA 0x00005 /* JAVA */
+#define C_AUTO 0x01000 /* C, but switch to C++ if `class' is met */
+#define YACC 0x10000 /* yacc file */
+
/*
* The C symbol tables.
*/
enum sym_type
{
- st_none, st_C_objprot, st_C_objimpl, st_C_objend, st_C_gnumacro,
- st_C_struct, st_C_enum, st_C_define, st_C_typedef, st_C_typespec,
+ st_none,
+ st_C_objprot, st_C_objimpl, st_C_objend,
+ st_C_gnumacro,
+ st_C_ignore,
+ st_C_javastruct,
+ st_C_operator,
+ st_C_class, st_C_template,
+ st_C_struct, st_C_extern, st_C_enum, st_C_define, st_C_typedef, st_C_typespec
};
+static unsigned int hash __P((const char *, unsigned int));
+static struct C_stab_entry * in_word_set __P((const char *, unsigned int));
+static enum sym_type C_symtype __P((char *, int, int));
+
/* Feed stuff between (but not including) %[ and %] lines to:
- gperf -c -k1,3 -o -p -r -t
+ gperf -c -k 1,3 -o -p -r -t
%[
struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
%%
+if, 0, st_C_ignore
+for, 0, st_C_ignore
+while, 0, st_C_ignore
+switch, 0, st_C_ignore
+return, 0, st_C_ignore
@interface, 0, st_C_objprot
@protocol, 0, st_C_objprot
@implementation,0, st_C_objimpl
@end, 0, st_C_objend
-class, C_PLPL, st_C_struct
+import, C_JAVA, st_C_ignore
+package, C_JAVA, st_C_ignore
+friend, C_PLPL, st_C_ignore
+extends, C_JAVA, st_C_javastruct
+implements, C_JAVA, st_C_javastruct
+interface, C_JAVA, st_C_struct
+class, 0, st_C_class
+namespace, C_PLPL, st_C_struct
domain, C_STAR, st_C_struct
union, 0, st_C_struct
struct, 0, st_C_struct
+extern, 0, st_C_extern
enum, 0, st_C_enum
typedef, 0, st_C_typedef
define, 0, st_C_define
+operator, C_PLPL, st_C_operator
+template, 0, st_C_template
+bool, C_PLPL, st_C_typespec
long, 0, st_C_typespec
short, 0, st_C_typespec
int, 0, st_C_typespec
unsigned, 0, st_C_typespec
auto, 0, st_C_typespec
void, 0, st_C_typespec
-extern, 0, st_C_typespec
static, 0, st_C_typespec
const, 0, st_C_typespec
volatile, 0, st_C_typespec
+explicit, C_PLPL, st_C_typespec
+mutable, C_PLPL, st_C_typespec
+typename, C_PLPL, st_C_typespec
# DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach).
DEFUN, 0, st_C_gnumacro
SYSCALL, 0, st_C_gnumacro
#EXFUN, 0, st_C_gnumacro
#DEFVAR_, 0, st_C_gnumacro
%]
-and replace lines between %< and %> with its output. */
+and replace lines between %< and %> with its output,
+then make in_word_set and C_stab_entry static. */
/*%<*/
-/* C code produced by gperf version 1.8.1 (K&R C version) */
-/* Command-line: gperf -c -k1,3 -o -p -r -t */
-
-
+/* C code produced by gperf version 2.7.1 (19981006 egcs) */
+/* Command-line: gperf -c -k 1,3 -o -p -r -t */
struct C_stab_entry { char *name; int c_ext; enum sym_type type; };
-#define MIN_WORD_LENGTH 3
+#define TOTAL_KEYWORDS 47
+#define MIN_WORD_LENGTH 2
#define MAX_WORD_LENGTH 15
-#define MIN_HASH_VALUE 7
-#define MAX_HASH_VALUE 63
-/*
- 29 keywords
- 57 is the maximum key range
-*/
+#define MIN_HASH_VALUE 18
+#define MAX_HASH_VALUE 138
+/* maximum key range = 121, duplicates = 0 */
-static int
+#ifdef __GNUC__
+__inline
+#endif
+static unsigned int
hash (str, len)
- register char *str;
- register int len;
+ register const char *str;
+ register unsigned int len;
{
- static unsigned char hash_table[] =
+ static unsigned char asso_values[] =
{
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 17, 63, 63, 63, 4, 14,
- 4, 63, 63, 63, 63, 63, 63, 63, 63, 63,
- 8, 63, 63, 0, 23, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63, 28, 63, 28,
- 10, 31, 27, 18, 63, 6, 63, 63, 26, 1,
- 11, 2, 29, 63, 29, 16, 26, 13, 15, 63,
- 63, 63, 63, 63, 63, 63, 63, 63,
- };
- return len + hash_table[str[2]] + hash_table[str[0]];
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 63, 139, 139, 139, 33, 44,
+ 62, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 42, 139, 139, 12, 32, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 34, 59, 37,
+ 24, 58, 33, 3, 139, 16, 139, 139, 42, 60,
+ 18, 11, 39, 139, 23, 57, 4, 63, 6, 20,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139, 139, 139, 139, 139,
+ 139, 139, 139, 139, 139, 139
+ };
+ register int hval = len;
+
+ switch (hval)
+ {
+ default:
+ case 3:
+ hval += asso_values[(unsigned char)str[2]];
+ case 2:
+ case 1:
+ hval += asso_values[(unsigned char)str[0]];
+ break;
+ }
+ return hval;
}
-struct C_stab_entry *
-in_word_set (str, len)
- register char *str;
- register int len;
+#ifdef __GNUC__
+__inline
+#endif
+static struct C_stab_entry *
+in_word_set (str, len)
+ register const char *str;
+ register unsigned int len;
{
-
- static struct C_stab_entry wordlist[] =
+ static struct C_stab_entry wordlist[] =
{
- {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
- {"SYSCALL", 0, st_C_gnumacro},
- {"",}, {"",}, {"",}, {"",}, {"",},
- {"DEFUN", 0, st_C_gnumacro},
- {"",}, {"",}, {"",},
- {"domain", C_STAR, st_C_struct},
- {"",}, {"",}, {"",}, {"",}, {"",},
- {"short", 0, st_C_typespec},
- {"union", 0, st_C_struct},
- {"void", 0, st_C_typespec},
- {"",}, {"",},
- {"PSEUDO", 0, st_C_gnumacro},
- {"double", 0, st_C_typespec},
- {"",}, {"",},
- {"@end", 0, st_C_objend},
- {"@implementation", 0, st_C_objimpl},
- {"float", 0, st_C_typespec},
- {"int", 0, st_C_typespec},
- {"",},
- {"unsigned", 0, st_C_typespec},
- {"@interface", 0, st_C_objprot},
- {"",},
- {"signed", 0, st_C_typespec},
- {"long", 0, st_C_typespec},
- {"ENTRY", 0, st_C_gnumacro},
- {"define", 0, st_C_define},
- {"const", 0, st_C_typespec},
- {"",}, {"",}, {"",},
- {"enum", 0, st_C_enum},
- {"volatile", 0, st_C_typespec},
- {"static", 0, st_C_typespec},
- {"struct", 0, st_C_struct},
- {"",}, {"",}, {"",},
- {"@protocol", 0, st_C_objprot},
- {"",}, {"",},
- {"auto", 0, st_C_typespec},
- {"",},
- {"char", 0, st_C_typespec},
- {"class", C_PLPL, st_C_struct},
- {"typedef", 0, st_C_typedef},
- {"extern", 0, st_C_typespec},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {"if", 0, st_C_ignore},
+ {""}, {""}, {""}, {""},
+ {"int", 0, st_C_typespec},
+ {""}, {""},
+ {"void", 0, st_C_typespec},
+ {""}, {""},
+ {"interface", C_JAVA, st_C_struct},
+ {""},
+ {"SYSCALL", 0, st_C_gnumacro},
+ {""},
+ {"return", 0, st_C_ignore},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {"while", 0, st_C_ignore},
+ {"auto", 0, st_C_typespec},
+ {""}, {""}, {""}, {""}, {""}, {""},
+ {"float", 0, st_C_typespec},
+ {"typedef", 0, st_C_typedef},
+ {"typename", C_PLPL, st_C_typespec},
+ {""}, {""}, {""},
+ {"friend", C_PLPL, st_C_ignore},
+ {"volatile", 0, st_C_typespec},
+ {""}, {""},
+ {"for", 0, st_C_ignore},
+ {"const", 0, st_C_typespec},
+ {"import", C_JAVA, st_C_ignore},
+ {""},
+ {"define", 0, st_C_define},
+ {"long", 0, st_C_typespec},
+ {"implements", C_JAVA, st_C_javastruct},
+ {"signed", 0, st_C_typespec},
+ {""},
+ {"extern", 0, st_C_extern},
+ {"extends", C_JAVA, st_C_javastruct},
+ {""},
+ {"mutable", C_PLPL, st_C_typespec},
+ {"template", 0, st_C_template},
+ {"short", 0, st_C_typespec},
+ {"bool", C_PLPL, st_C_typespec},
+ {"char", 0, st_C_typespec},
+ {"class", 0, st_C_class},
+ {"operator", C_PLPL, st_C_operator},
+ {""},
+ {"switch", 0, st_C_ignore},
+ {""},
+ {"ENTRY", 0, st_C_gnumacro},
+ {""},
+ {"package", C_JAVA, st_C_ignore},
+ {"union", 0, st_C_struct},
+ {"@end", 0, st_C_objend},
+ {"struct", 0, st_C_struct},
+ {"namespace", C_PLPL, st_C_struct},
+ {""}, {""},
+ {"domain", C_STAR, st_C_struct},
+ {"@interface", 0, st_C_objprot},
+ {"PSEUDO", 0, st_C_gnumacro},
+ {"double", 0, st_C_typespec},
+ {""},
+ {"@protocol", 0, st_C_objprot},
+ {""},
+ {"static", 0, st_C_typespec},
+ {""}, {""},
+ {"DEFUN", 0, st_C_gnumacro},
+ {""}, {""}, {""}, {""},
+ {"explicit", C_PLPL, st_C_typespec},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {""},
+ {"enum", 0, st_C_enum},
+ {""}, {""},
+ {"unsigned", 0, st_C_typespec},
+ {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+ {"@implementation",0, st_C_objimpl}
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register int key = hash (str, len);
- if (key <= MAX_HASH_VALUE && key >= MIN_HASH_VALUE)
+ if (key <= MAX_HASH_VALUE && key >= 0)
{
- register char *s = wordlist[key].name;
+ register const char *s = wordlist[key].name;
- if (*s == *str && !strncmp (str + 1, s + 1, len - 1))
+ if (*str == *s && !strncmp (str + 1, s + 1, len - 1))
return &wordlist[key];
}
}
}
/*%>*/
-enum sym_type
-C_symtype(str, len, c_ext)
+static enum sym_type
+C_symtype (str, len, c_ext)
char *str;
int len;
int c_ext;
{
- register struct C_stab_entry *se = in_word_set(str, len);
+ register struct C_stab_entry *se = in_word_set (str, len);
if (se == NULL || (se->c_ext && !(c_ext & se->c_ext)))
return st_none;
return se->type;
}
+
\f
- /*
- * C functions are recognized using a simple finite automaton.
- * funcdef is its state variable.
- */
-enum
+/*
+ * C functions and variables are recognized using a simple
+ * finite automaton. fvdef is its state variable.
+ */
+static enum
{
- fnone, /* nothing seen */
- ftagseen, /* function-like tag seen */
- fstartlist, /* just after open parenthesis */
- finlist, /* in parameter list */
- flistseen, /* after parameter list */
- fignore /* before open brace */
-} funcdef;
-
-
- /*
- * typedefs are recognized using a simple finite automaton.
- * typeddef is its state variable.
- */
-enum
+ fvnone, /* nothing seen */
+ fdefunkey, /* Emacs DEFUN keyword seen */
+ fdefunname, /* Emacs DEFUN name seen */
+ foperator, /* func: operator keyword seen (cplpl) */
+ fvnameseen, /* function or variable name seen */
+ fstartlist, /* func: just after open parenthesis */
+ finlist, /* func: in parameter list */
+ flistseen, /* func: after parameter list */
+ fignore, /* func: before open brace */
+ vignore /* var-like: ignore until ';' */
+} fvdef;
+
+static bool fvextern; /* func or var: extern keyword seen; */
+
+/*
+ * typedefs are recognized using a simple finite automaton.
+ * typdef is its state variable.
+ */
+static enum
{
tnone, /* nothing seen */
- ttypedseen, /* typedef keyword seen */
+ tkeyseen, /* typedef keyword seen */
+ ttypeseen, /* defined type seen */
tinbody, /* inside typedef body */
tend, /* just before typedef tag */
tignore /* junk after typedef tag */
} typdef;
-
- /*
- * struct-like structures (enum, struct and union) are recognized
- * using another simple finite automaton. `structdef' is its state
- * variable.
- */
-enum
+/*
+ * struct-like structures (enum, struct and union) are recognized
+ * using another simple finite automaton. `structdef' is its state
+ * variable.
+ */
+static enum
{
- snone, /* nothing seen yet */
+ snone, /* nothing seen yet,
+ or in struct body if cblev > 0 */
skeyseen, /* struct-like keyword seen */
stagseen, /* struct-like tag seen */
- scolonseen, /* colon seen after struct-like tag */
- sinbody /* in struct body: recognize member func defs*/
+ sintemplate, /* inside template (ignore) */
+ scolonseen /* colon seen after struct-like tag */
} structdef;
-/*
- * When structdef is stagseen, scolonseen, or sinbody, structtag is the
- * struct tag, and structtype is the type of the preceding struct-like
- * keyword.
- */
-char *structtag = "<uninited>";
-enum sym_type structtype;
-
/*
* When objdef is different from onone, objtag is the name of the class.
*/
-char *objtag = "<uninited>";
+static char *objtag = "<uninited>";
/*
* Yet another little state machine to deal with preprocessor lines.
*/
-enum
+static enum
{
dnone, /* nothing seen */
dsharpseen, /* '#' seen as first char on line */
/*
* State machine for Objective C protocols and implementations.
+ * Idea by Tom R.Hageman <tom@basil.icce.rug.nl> (1995)
*/
-enum
+static enum
{
onone, /* nothing seen */
oprotocol, /* @interface or @protocol seen */
omethodtag, /* after method name */
omethodcolon, /* after method colon */
omethodparm, /* after method parameter */
- oignore, /* wait for @end */
+ oignore /* wait for @end */
} objdef;
-/*
- * Set this to TRUE, and the next token considered is called a function.
- * Used only for GNU emacs's function-defining macros.
- */
-logical next_token_is_func;
/*
- * TRUE in the rules part of a yacc file, FALSE outside (parse as C).
+ * Use this structure to keep info about the token read, and how it
+ * should be tagged. Used by the make_C_tag function to build a tag.
*/
-logical yacc_rules;
+static struct tok
+{
+ bool valid;
+ bool named;
+ int offset;
+ int length;
+ int lineno;
+ long linepos;
+ char *line;
+} token; /* latest token read */
+static linebuffer token_name; /* its name */
/*
- * methodlen is the length of the method name stored in token_name.
+ * Variables and functions for dealing with nested structures.
+ * Idea by Mykola Dzyuba <mdzyuba@yahoo.com> (2001)
*/
-int methodlen;
+static void pushclass_above __P((int, char *, int));
+static void popclass_above __P((int));
+static void write_classname __P((linebuffer *, char *qualifier));
+
+static struct {
+ char **cname; /* nested class names */
+ int *cblev; /* nested class curly brace level */
+ int nl; /* class nesting level (elements used) */
+ int size; /* length of the array */
+} cstack; /* stack for nested declaration tags */
+/* Current struct nesting depth (namespace, class, struct, union, enum). */
+#define nestlev (cstack.nl)
+/* After struct keyword or in struct body, not inside an nested function. */
+#define instruct (structdef == snone && nestlev > 0 \
+ && cblev == cstack.cblev[nestlev-1] + 1)
+
+static void
+pushclass_above (cblev, str, len)
+ int cblev;
+ char *str;
+ int len;
+{
+ int nl;
+
+ popclass_above (cblev);
+ nl = cstack.nl;
+ if (nl >= cstack.size)
+ {
+ int size = cstack.size *= 2;
+ xrnew (cstack.cname, size, char *);
+ xrnew (cstack.cblev, size, int);
+ }
+ assert (nl == 0 || cstack.cblev[nl-1] < cblev);
+ cstack.cname[nl] = (str == NULL) ? NULL : savenstr (str, len);
+ cstack.cblev[nl] = cblev;
+ cstack.nl = nl + 1;
+}
+
+static void
+popclass_above (cblev)
+ int cblev;
+{
+ int nl;
+
+ for (nl = cstack.nl - 1;
+ nl >= 0 && cstack.cblev[nl] >= cblev;
+ nl--)
+ {
+ if (cstack.cname[nl] != NULL)
+ free (cstack.cname[nl]);
+ cstack.nl = nl;
+ }
+}
+
+static void
+write_classname (cn, qualifier)
+ linebuffer *cn;
+ char *qualifier;
+{
+ int i, len;
+ int qlen = strlen (qualifier);
+
+ if (cstack.nl == 0 || cstack.cname[0] == NULL)
+ {
+ len = 0;
+ cn->len = 0;
+ cn->buffer[0] = '\0';
+ }
+ else
+ {
+ len = strlen (cstack.cname[0]);
+ linebuffer_setlen (cn, len);
+ strcpy (cn->buffer, cstack.cname[0]);
+ }
+ for (i = 1; i < cstack.nl; i++)
+ {
+ char *s;
+ int slen;
+
+ s = cstack.cname[i];
+ if (s == NULL)
+ continue;
+ slen = strlen (s);
+ len += slen + qlen;
+ linebuffer_setlen (cn, len);
+ strncat (cn->buffer, qualifier, qlen);
+ strncat (cn->buffer, s, slen);
+ }
+}
+
+\f
+static bool consider_token __P((char *, int, int, int *, int, int, bool *));
+static void make_C_tag __P((bool));
/*
* consider_token ()
* checks to see if the current token is at the start of a
- * function, or corresponds to a typedef, or is a struct/union/enum
- * tag.
- *
- * *IS_FUNC gets TRUE iff the token is a function or macro with args.
- * C_EXT is which language we are looking at.
+ * function or variable, or corresponds to a typedef, or
+ * is a struct/union/enum tag, or #define, or an enum constant.
*
- * In the future we will need some way to adjust where the end of
- * the token is; for instance, implementing the C++ keyword
- * `operator' properly will adjust the end of the token to be after
- * whatever follows `operator'.
+ * *IS_FUNC gets TRUE iff the token is a function or #define macro
+ * with args. C_EXTP points to which language we are looking at.
*
* Globals
- * funcdef IN OUT
+ * fvdef IN OUT
* structdef IN OUT
* definedef IN OUT
* typdef IN OUT
* objdef IN OUT
- * next_token_is_func IN OUT
*/
-logical
-consider_token (str, len, c, c_ext, cblev, parlev, is_func)
+static bool
+consider_token (str, len, c, c_extp, cblev, parlev, is_func_or_var)
register char *str; /* IN: token pointer */
register int len; /* IN: token length */
- register char c; /* IN: first char after the token */
- int c_ext; /* IN: C extensions mask */
+ register int c; /* IN: first char after the token */
+ int *c_extp; /* IN, OUT: C extensions mask */
int cblev; /* IN: curly brace level */
int parlev; /* IN: parenthesis level */
- logical *is_func; /* OUT: function found */
+ bool *is_func_or_var; /* OUT: function or variable found */
{
- enum sym_type toktype = C_symtype (str, len, c_ext);
+ /* When structdef is stagseen, scolonseen, or snone with cblev > 0,
+ structtype is the type of the preceding struct-like keyword, and
+ structcblev is the curly brace level where it has been seen. */
+ static enum sym_type structtype;
+ static int structcblev;
+ static enum sym_type toktype;
+
+
+ toktype = C_symtype (str, len, *c_extp);
/*
* Advance the definedef state machine.
{
case dnone:
/* We're not on a preprocessor line. */
+ if (toktype == st_C_gnumacro)
+ {
+ fvdef = fdefunkey;
+ return FALSE;
+ }
break;
case dsharpseen:
if (toktype == st_C_define)
* and constantypedefs is FALSE.
*/
definedef = dignorerest;
- *is_func = (c == '(');
- if (!*is_func && !constantypedefs)
+ *is_func_or_var = (c == '(');
+ if (!*is_func_or_var && !constantypedefs)
return FALSE;
else
return TRUE;
case dignorerest:
return FALSE;
default:
- error ("internal error: definedef value.", 0);
+ error ("internal error: definedef value.", (char *)NULL);
}
/*
if (toktype == st_C_typedef)
{
if (typedefs)
- typdef = ttypedseen;
- funcdef = fnone;
+ typdef = tkeyseen;
+ fvextern = FALSE;
+ fvdef = fvnone;
return FALSE;
}
break;
- case ttypedseen:
+ case tkeyseen:
switch (toktype)
{
case st_none:
case st_C_typespec:
- typdef = tend;
- break;
+ case st_C_class:
case st_C_struct:
case st_C_enum:
+ typdef = ttypeseen;
break;
}
- /* Do not return here, so the structdef stuff has a chance. */
+ break;
+ case ttypeseen:
+ if (structdef == snone && fvdef == fvnone)
+ {
+ fvdef = fvnameseen;
+ return TRUE;
+ }
break;
case tend:
switch (toktype)
{
case st_C_typespec:
+ case st_C_class:
case st_C_struct:
case st_C_enum:
return FALSE;
}
/*
- * This structdef business is currently only invoked when cblev==0.
- * It should be recursively invoked whatever the curly brace level,
- * and a stack of states kept, to allow for definitions of structs
- * within structs.
- *
* This structdef business is NOT invoked when we are ctags and the
* file is plain C. This is because a struct tag may have the same
* name as another tag, and this loses with ctags.
- *
- * This if statement deals with the typdef state machine as
- * follows: if typdef==ttypedseen and token is struct/union/class/enum,
- * return FALSE. All the other code here is for the structdef
- * state machine.
*/
switch (toktype)
{
+ case st_C_javastruct:
+ if (structdef == stagseen)
+ structdef = scolonseen;
+ return FALSE;
+ case st_C_template:
+ case st_C_class:
+ if (cblev == 0
+ && (*c_extp & C_AUTO) /* automatic detection of C++ language */
+ && definedef == dnone && structdef == snone
+ && typdef == tnone && fvdef == fvnone)
+ *c_extp = (*c_extp | C_PLPL) & ~C_AUTO;
+ if (toktype == st_C_template)
+ break;
+ /* FALLTHRU */
case st_C_struct:
case st_C_enum:
- if (typdef == ttypedseen
- || (typedefs_and_cplusplus && cblev == 0 && structdef == snone))
+ if (parlev == 0
+ && fvdef != vignore
+ && (typdef == tkeyseen
+ || (typedefs_or_cplusplus && structdef == snone)))
{
structdef = skeyseen;
structtype = toktype;
+ structcblev = cblev;
}
return FALSE;
}
+
if (structdef == skeyseen)
{
- /* Save the tag for struct/union/class, for functions that may be
- defined inside. */
- if (structtype == st_C_struct)
- structtag = savenstr (str, len);
- else
- structtag = "<enum>";
structdef = stagseen;
return TRUE;
}
- /* Avoid entering funcdef stuff if typdef is going on. */
if (typdef != tnone)
- {
- definedef = dnone;
- return FALSE;
- }
-
- /* Detect GNU macros. */
- if (definedef == dnone && toktype == st_C_gnumacro)
- {
- next_token_is_func = TRUE;
- return FALSE;
- }
- if (next_token_is_func)
- {
- next_token_is_func = FALSE;
- funcdef = fignore;
- *is_func = TRUE;
- return TRUE;
- }
+ definedef = dnone;
- /*
- * Detecting Objective C constructs.
- */
+ /* Detect Objective C constructs. */
switch (objdef)
{
case onone:
}
break;
case oimplementation:
- /* Save the class tag for functions that may be defined inside. */
+ /* Save the class tag for functions or variables defined inside. */
objtag = savenstr (str, len);
objdef = oinbody;
return FALSE;
/* Save the class tag for categories. */
objtag = savenstr (str, len);
objdef = otagseen;
- *is_func = TRUE;
+ *is_func_or_var = TRUE;
return TRUE;
case oparenseen:
objdef = ocatseen;
- *is_func = TRUE;
+ *is_func_or_var = TRUE;
return TRUE;
case oinbody:
break;
if (parlev == 0)
{
objdef = omethodtag;
- methodlen = len;
- GROW_LINEBUFFER (token_name, methodlen+1);
+ linebuffer_setlen (&token_name, len);
strncpy (token_name.buffer, str, len);
- token_name.buffer[methodlen] = '\0';
+ token_name.buffer[len] = '\0';
return TRUE;
}
return FALSE;
if (parlev == 0)
{
objdef = omethodtag;
- methodlen =+ len;
- GROW_LINEBUFFER (token_name, methodlen+1);
+ linebuffer_setlen (&token_name, token_name.len + len);
strncat (token_name.buffer, str, len);
return TRUE;
}
/* Memory leakage here: the string pointed by objtag is
never released, because many tests would be needed to
avoid breaking on incorrect input code. The amount of
- memory leaked here is the sum of the lenghts of the
+ memory leaked here is the sum of the lengths of the
class tags.
free (objtag); */
objdef = onone;
return FALSE;
}
- /* A function? */
+ /* A function, variable or enum constant? */
switch (toktype)
{
+ case st_C_extern:
+ fvextern = TRUE;
+ /* FALLTHRU */
case st_C_typespec:
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone; /* should be useless */
+ if (fvdef != finlist && fvdef != fignore && fvdef != vignore)
+ fvdef = fvnone; /* should be useless */
return FALSE;
- default:
- if (funcdef == fnone)
+ case st_C_ignore:
+ fvextern = FALSE;
+ fvdef = vignore;
+ return FALSE;
+ case st_C_operator:
+ fvdef = foperator;
+ *is_func_or_var = TRUE;
+ return TRUE;
+ case st_none:
+ if (constantypedefs
+ && structdef == snone
+ && structtype == st_C_enum && cblev > structcblev)
+ return TRUE; /* enum constant */
+ switch (fvdef)
{
- funcdef = ftagseen;
- *is_func = TRUE;
+ case fdefunkey:
+ if (cblev > 0)
+ break;
+ fvdef = fdefunname; /* GNU macro */
+ *is_func_or_var = TRUE;
+ return TRUE;
+ case fvnone:
+ if ((strneq (str, "asm", 3) && endtoken (str[3]))
+ || (strneq (str, "__asm__", 7) && endtoken (str[7])))
+ {
+ fvdef = vignore;
+ return FALSE;
+ }
+ if ((*c_extp & C_PLPL) && strneq (str+len-10, "::operator", 10))
+ {
+ fvdef = foperator;
+ *is_func_or_var = TRUE;
+ return TRUE;
+ }
+ if (cblev > 0 && !instruct)
+ break;
+ fvdef = fvnameseen; /* function or variable */
+ *is_func_or_var = TRUE;
return TRUE;
}
+ break;
}
return FALSE;
}
+\f
/*
- * C_entries ()
- * This routine finds functions, typedefs, #define's and
- * struct/union/enum definitions in C syntax and adds them
- * to the list.
+ * C_entries often keeps pointers to tokens or lines which are older than
+ * the line currently read. By keeping two line buffers, and switching
+ * them at end of line, it is possible to use those pointers.
*/
-typedef struct
+static struct
{
- logical valid;
- char *str;
- logical named;
- int linelen;
- int lineno;
long linepos;
- char *buffer;
-} TOKEN;
+ linebuffer lb;
+} lbs[2];
#define current_lb_is_new (newndx == curndx)
#define switch_line_buffers() (curndx = 1 - curndx)
#define curlb (lbs[curndx].lb)
-#define othlb (lbs[1-curndx].lb)
#define newlb (lbs[newndx].lb)
#define curlinepos (lbs[curndx].linepos)
-#define othlinepos (lbs[1-curndx].linepos)
#define newlinepos (lbs[newndx].linepos)
-#define CNL_SAVE_DEFINEDEF \
+#define CNL_SAVE_DEFINEDEF() \
do { \
curlinepos = charno; \
lineno++; \
+ linecharno = charno; \
charno += readline (&curlb, inf); \
lp = curlb.buffer; \
quotednl = FALSE; \
newndx = curndx; \
} while (0)
-#define CNL \
+#define CNL() \
do { \
- CNL_SAVE_DEFINEDEF; \
- if (savetok.valid) \
+ CNL_SAVE_DEFINEDEF(); \
+ if (savetoken.valid) \
{ \
- tok = savetok; \
- savetok.valid = FALSE; \
+ token = savetoken; \
+ savetoken.valid = FALSE; \
} \
definedef = dnone; \
} while (0)
-/* Ideally this macro should never be called wihen tok.valid is FALSE,
- but this would mean that the state machines always guess right. */
-#define make_tag(isfun) do \
-if (tok.valid) { \
- char *name = NULL; \
- if (CTAGS || tok.named) \
- name = savestr (token_name.buffer); \
- pfnote (name, isfun, tok.buffer, tok.linelen, tok.lineno, tok.linepos); \
- tok.valid = FALSE; \
-} while (0)
-void
+static void
+make_C_tag (isfun)
+ bool isfun;
+{
+ /* This function should never be called when token.valid is FALSE, but
+ we must protect against invalid input or internal errors. */
+ if (DEBUG || token.valid)
+ {
+ if (traditional_tag_style)
+ {
+ /* This was the original code. Now we call new_pfnote instead,
+ which uses the new method for naming tags (see new_pfnote). */
+ char *name = NULL;
+
+ if (CTAGS || token.named)
+ name = savestr (token_name.buffer);
+ if (DEBUG && !token.valid)
+ {
+ if (token.named)
+ name = concat (name, "##invalid##", "");
+ else
+ name = savestr ("##invalid##");
+ }
+ pfnote (name, isfun, token.line,
+ token.offset+token.length+1, token.lineno, token.linepos);
+ }
+ else
+ new_pfnote (token_name.buffer, token_name.len, isfun, token.line,
+ token.offset+token.length+1, token.lineno, token.linepos);
+ token.valid = FALSE;
+ }
+}
+
+
+/*
+ * C_entries ()
+ * This routine finds functions, variables, typedefs,
+ * #define's, enum constants and struct/union/enum definitions in
+ * C syntax and adds them to the list.
+ */
+static void
C_entries (c_ext, inf)
int c_ext; /* extension of C */
FILE *inf; /* input file */
register char c; /* latest char read; '\0' for end of line */
register char *lp; /* pointer one beyond the character `c' */
int curndx, newndx; /* indices for current and new lb */
- TOKEN tok; /* latest token read */
register int tokoff; /* offset in line of start of current token */
register int toklen; /* length of current token */
+ char *qualifier; /* string used to qualify names */
+ int qlen; /* length of qualifier */
int cblev; /* current curly brace level */
int parlev; /* current parenthesis level */
- logical incomm, inquote, inchar, quotednl, midtoken;
- logical cplpl;
- TOKEN savetok; /* token saved during preprocessor handling */
+ int typdefcblev; /* cblev where a typedef struct body begun */
+ bool incomm, inquote, inchar, quotednl, midtoken;
+ bool cplpl, cjava;
+ bool yacc_rules; /* in the rules part of a yacc file */
+ struct tok savetoken; /* token saved during preprocessor handling */
+
+ initbuffer (&token_name);
+ initbuffer (&lbs[0].lb);
+ initbuffer (&lbs[1].lb);
+ if (cstack.size == 0)
+ {
+ cstack.size = (DEBUG) ? 1 : 4;
+ cstack.nl = 0;
+ cstack.cname = xnew (cstack.size, char *);
+ cstack.cblev = xnew (cstack.size, int);
+ }
+ tokoff = toklen = typdefcblev = 0; /* keep compiler quiet */
curndx = newndx = 0;
lineno = 0;
charno = 0;
lp = curlb.buffer;
*lp = 0;
- funcdef = fnone; typdef = tnone; structdef = snone;
- definedef = dnone; objdef = onone;
- next_token_is_func = yacc_rules = FALSE;
+ fvdef = fvnone; fvextern = FALSE; typdef = tnone;
+ structdef = snone; definedef = dnone; objdef = onone;
+ yacc_rules = FALSE;
midtoken = inquote = inchar = incomm = quotednl = FALSE;
- tok.valid = savetok.valid = FALSE;
+ token.valid = savetoken.valid = FALSE;
cblev = 0;
parlev = 0;
- cplpl = c_ext & C_PLPL;
+ cplpl = (c_ext & C_PLPL) == C_PLPL;
+ cjava = (c_ext & C_JAVA) == C_JAVA;
+ if (cjava)
+ { qualifier = "."; qlen = 1; }
+ else
+ { qualifier = "::"; qlen = 2; }
+
while (!feof (inf))
{
case '\0':
/* Newlines inside comments do not end macro definitions in
traditional cpp. */
- CNL_SAVE_DEFINEDEF;
+ CNL_SAVE_DEFINEDEF ();
break;
}
continue;
/* Newlines inside strings do not end macro definitions
in traditional cpp, even though compilers don't
usually accept them. */
- CNL_SAVE_DEFINEDEF;
+ CNL_SAVE_DEFINEDEF ();
break;
}
continue;
{
case '\0':
/* Hmmm, something went wrong. */
- CNL;
+ CNL ();
/* FALLTHRU */
case '\'':
inchar = FALSE;
{
case '"':
inquote = TRUE;
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone;
+ switch (fvdef)
+ {
+ case fdefunkey:
+ case fstartlist:
+ case finlist:
+ case fignore:
+ case vignore:
+ break;
+ default:
+ fvextern = FALSE;
+ fvdef = fvnone;
+ }
continue;
case '\'':
inchar = TRUE;
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone;
+ if (fvdef != finlist && fvdef != fignore && fvdef !=vignore)
+ {
+ fvextern = FALSE;
+ fvdef = fvnone;
+ }
continue;
case '/':
if (*lp == '*')
case '%':
if ((c_ext & YACC) && *lp == '%')
{
- /* entering or exiting rules section in yacc file */
+ /* Entering or exiting rules section in yacc file. */
lp++;
- definedef = dnone; funcdef = fnone;
+ definedef = dnone; fvdef = fvnone; fvextern = FALSE;
typdef = tnone; structdef = snone;
- next_token_is_func = FALSE;
midtoken = inquote = inchar = incomm = quotednl = FALSE;
cblev = 0;
yacc_rules = !yacc_rules;
if (definedef == dnone)
{
char *cp;
- logical cpptoken = TRUE;
+ bool cpptoken = TRUE;
/* Look back on this line. If all blanks, or nonblanks
followed by an end of comment, this is a preprocessor
} /* switch (c) */
- /* Consider token only if some complicated conditions are satisfied. */
- if ((definedef != dnone
- || (cblev == 0 && structdef != scolonseen)
- || (cblev == 1 && cplpl && structdef == sinbody))
- && typdef != tignore
+ /* Consider token only if some involved conditions are satisfied. */
+ if (typdef != tignore
&& definedef != dignorerest
- && funcdef != finlist)
+ && fvdef != finlist
+ && structdef != sintemplate
+ && (definedef != dnone
+ || structdef != scolonseen))
{
if (midtoken)
{
if (endtoken (c))
{
- if (c == ':' && cplpl && *lp == ':' && begtoken(*(lp + 1)))
+ if (c == ':' && cplpl && *lp == ':' && begtoken (lp[1]))
{
/*
* This handles :: in the middle, but not at the
- * beginning of an identifier.
+ * beginning of an identifier. Also, space-separated
+ * :: is not recognised.
*/
lp += 2;
- toklen += 3;
+ toklen += 2;
+ c = lp[-1];
+ goto still_in_token;
}
else
{
- logical is_func = FALSE;
+ bool funorvar = FALSE;
if (yacc_rules
|| consider_token (newlb.buffer + tokoff, toklen, c,
- c_ext, cblev, parlev, &is_func))
+ &c_ext, cblev, parlev, &funorvar))
{
- if (structdef == sinbody
- && definedef == dnone
- && is_func)
- /* function defined in C++ class body */
+ if (fvdef == foperator)
{
- GROW_LINEBUFFER (token_name,
- strlen(structtag)+2+toklen+1);
- strcpy (token_name.buffer, structtag);
- strcat (token_name.buffer, "::");
+ char *oldlp = lp;
+ lp = skip_spaces (lp-1);
+ if (*lp != '\0')
+ lp += 1;
+ while (*lp != '\0'
+ && !iswhite (*lp) && *lp != '(')
+ lp += 1;
+ c = *lp++;
+ toklen += lp - oldlp;
+ }
+ token.named = FALSE;
+ if ((c_ext & C_EXT) /* not pure C */
+ && nestlev > 0 && definedef == dnone)
+ /* in struct body */
+ {
+ write_classname (&token_name, qualifier);
+ linebuffer_setlen (&token_name,
+ token_name.len+qlen+toklen);
+ strcat (token_name.buffer, qualifier);
strncat (token_name.buffer,
- newlb.buffer+tokoff, toklen);
- tok.named = TRUE;
+ newlb.buffer + tokoff, toklen);
+ token.named = TRUE;
}
else if (objdef == ocatseen)
/* Objective C category */
{
- GROW_LINEBUFFER (token_name,
- strlen(objtag)+2+toklen+1);
+ int len = strlen (objtag) + 2 + toklen;
+ linebuffer_setlen (&token_name, len);
strcpy (token_name.buffer, objtag);
strcat (token_name.buffer, "(");
strncat (token_name.buffer,
- newlb.buffer+tokoff, toklen);
+ newlb.buffer + tokoff, toklen);
strcat (token_name.buffer, ")");
- tok.named = TRUE;
+ token.named = TRUE;
}
else if (objdef == omethodtag
|| objdef == omethodparm)
/* Objective C method */
{
- tok.named = TRUE;
+ token.named = TRUE;
+ }
+ else if (fvdef == fdefunname)
+ /* GNU DEFUN and similar macros */
+ {
+ bool defun = (newlb.buffer[tokoff] == 'F');
+ int off = tokoff;
+ int len = toklen;
+
+ /* Rewrite the tag so that emacs lisp DEFUNs
+ can be found by their elisp name */
+ if (defun)
+ {
+ off += 1;
+ len -= 1;
+ }
+ len = toklen;
+ linebuffer_setlen (&token_name, len);
+ strncpy (token_name.buffer,
+ newlb.buffer + off, len);
+ token_name.buffer[len] = '\0';
+ if (defun)
+ while (--len >= 0)
+ if (token_name.buffer[len] == '_')
+ token_name.buffer[len] = '-';
+ token.named = defun;
}
else
{
- GROW_LINEBUFFER (token_name, toklen+1);
+ linebuffer_setlen (&token_name, toklen);
strncpy (token_name.buffer,
- newlb.buffer+tokoff, toklen);
+ newlb.buffer + tokoff, toklen);
token_name.buffer[toklen] = '\0';
- if (structdef == stagseen
- || typdef == tend
- || (is_func
- && definedef == dignorerest)) /* macro */
- tok.named = TRUE;
- else
- tok.named = FALSE;
+ /* Name macros and members. */
+ token.named = (structdef == stagseen
+ || typdef == ttypeseen
+ || typdef == tend
+ || (funorvar
+ && definedef == dignorerest)
+ || (funorvar
+ && definedef == dnone
+ && structdef == snone
+ && cblev > 0));
}
- tok.lineno = lineno;
- tok.linelen = tokoff + toklen + 1;
- tok.buffer = newlb.buffer;
- tok.linepos = newlinepos;
- tok.valid = TRUE;
+ token.lineno = lineno;
+ token.offset = tokoff;
+ token.length = toklen;
+ token.line = newlb.buffer;
+ token.linepos = newlinepos;
+ token.valid = TRUE;
if (definedef == dnone
- && (funcdef == ftagseen
+ && (fvdef == fvnameseen
+ || fvdef == foperator
|| structdef == stagseen
|| typdef == tend
+ || typdef == ttypeseen
|| objdef != onone))
{
if (current_lb_is_new)
switch_line_buffers ();
}
- else
- make_tag (is_func);
+ else if (definedef != dnone
+ || fvdef == fdefunname
+ || instruct)
+ make_C_tag (funorvar);
}
midtoken = FALSE;
}
} /* if (endtoken (c)) */
else if (intoken (c))
+ still_in_token:
{
toklen++;
continue;
switch (definedef)
{
case dnone:
- switch (funcdef)
+ switch (fvdef)
{
case fstartlist:
- funcdef = finlist;
+ fvdef = finlist;
continue;
case flistseen:
- make_tag (TRUE);
- funcdef = fignore;
+ make_C_tag (TRUE); /* a function */
+ fvdef = fignore;
break;
- case ftagseen:
- funcdef = fnone;
+ case fvnameseen:
+ fvdef = fvnone;
break;
}
- if (structdef == stagseen)
- structdef = snone;
+ if (structdef == stagseen && !cjava)
+ {
+ popclass_above (cblev);
+ structdef = snone;
+ }
break;
case dsharpseen:
- savetok = tok;
+ savetoken = token;
}
if (!yacc_rules || lp == newlb.buffer + 1)
{
switch (c)
{
case ':':
+ if (yacc_rules && token.offset == 0 && token.valid)
+ {
+ make_C_tag (FALSE); /* a yacc function */
+ break;
+ }
if (definedef != dnone)
break;
switch (objdef)
{
case otagseen:
objdef = oignore;
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C class */
break;
case omethodtag:
case omethodparm:
objdef = omethodcolon;
- methodlen += 1;
- GROW_LINEBUFFER (token_name, methodlen+1);
+ linebuffer_setlen (&token_name, token_name.len + 1);
strcat (token_name.buffer, ":");
break;
}
if (structdef == stagseen)
structdef = scolonseen;
- else
- switch (funcdef)
- {
- case ftagseen:
- if (yacc_rules)
- {
- make_tag (FALSE);
- funcdef = fignore;
- }
- break;
- case fstartlist:
- funcdef = fnone;
- break;
- }
break;
case ';':
if (definedef != dnone)
break;
- if (cblev == 0)
- switch (typdef)
- {
- case tend:
- make_tag (FALSE);
- /* FALLTHRU */
- default:
- typdef = tnone;
- }
- if (funcdef != fignore)
+ switch (typdef)
{
- funcdef = fnone;
- /* The following instruction invalidates the token.
- Probably the token should be invalidated in all
- other cases where some state machine is reset. */
- tok.valid = FALSE;
- }
- if (structdef == stagseen)
- structdef = snone;
- break;
- case ',':
- if (definedef != dnone)
+ case tend:
+ case ttypeseen:
+ make_C_tag (FALSE); /* a typedef */
+ typdef = tnone;
+ fvdef = fvnone;
+ break;
+ case tnone:
+ case tinbody:
+ case tignore:
+ switch (fvdef)
+ {
+ case fignore:
+ if (typdef == tignore)
+ fvdef = fvnone;
+ break;
+ case fvnameseen:
+ if ((globals && cblev == 0 && (!fvextern || declarations))
+ || (members && instruct))
+ make_C_tag (FALSE); /* a variable */
+ fvextern = FALSE;
+ fvdef = fvnone;
+ token.valid = FALSE;
+ break;
+ case flistseen:
+ if ((declarations && typdef == tnone && !instruct)
+ || (members && typdef != tignore && instruct))
+ make_C_tag (TRUE); /* a function declaration */
+ /* FALLTHRU */
+ default:
+ fvextern = FALSE;
+ fvdef = fvnone;
+ if (declarations
+ && structdef == stagseen && (c_ext & C_PLPL))
+ make_C_tag (FALSE); /* forward declaration */
+ else
+ /* The following instruction invalidates the token.
+ Probably the token should be invalidated in all other
+ cases where some state machine is reset prematurely. */
+ token.valid = FALSE;
+ } /* switch (fvdef) */
+ /* FALLTHRU */
+ default:
+ if (!instruct)
+ typdef = tnone;
+ }
+ if (structdef == stagseen)
+ structdef = snone;
+ break;
+ case ',':
+ if (definedef != dnone)
break;
switch (objdef)
{
case omethodtag:
case omethodparm:
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C method */
objdef = oinbody;
break;
}
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone;
+ switch (fvdef)
+ {
+ case fdefunkey:
+ case foperator:
+ case fstartlist:
+ case finlist:
+ case fignore:
+ case vignore:
+ break;
+ case fdefunname:
+ fvdef = fignore;
+ break;
+ case fvnameseen: /* a variable */
+ if ((globals && cblev == 0 && (!fvextern || declarations))
+ || (members && instruct))
+ make_C_tag (FALSE);
+ break;
+ case flistseen: /* a function */
+ if ((declarations && typdef == tnone && !instruct)
+ || (members && typdef != tignore && instruct))
+ {
+ make_C_tag (TRUE); /* a function declaration */
+ fvdef = fvnameseen;
+ }
+ else if (!declarations)
+ fvdef = fvnone;
+ token.valid = FALSE;
+ break;
+ default:
+ fvdef = fvnone;
+ }
if (structdef == stagseen)
structdef = snone;
break;
case '[':
if (definedef != dnone)
break;
- if (cblev == 0 && typdef == tend)
+ if (structdef == stagseen)
+ structdef = snone;
+ switch (typdef)
{
+ case ttypeseen:
+ case tend:
typdef = tignore;
- make_tag (FALSE);
+ make_C_tag (FALSE); /* a typedef */
+ break;
+ case tnone:
+ case tinbody:
+ switch (fvdef)
+ {
+ case foperator:
+ case finlist:
+ case fignore:
+ case vignore:
+ break;
+ case fvnameseen:
+ if ((members && cblev == 1)
+ || (globals && cblev == 0
+ && (!fvextern || declarations)))
+ make_C_tag (FALSE); /* a variable */
+ /* FALLTHRU */
+ default:
+ fvdef = fvnone;
+ }
break;
}
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone;
- if (structdef == stagseen)
- structdef = snone;
break;
case '(':
if (definedef != dnone)
break;
if (objdef == otagseen && parlev == 0)
objdef = oparenseen;
- switch (funcdef)
+ switch (fvdef)
{
- case fnone:
- switch (typdef)
+ case fvnameseen:
+ if (typdef == ttypeseen
+ && *lp != '*'
+ && !instruct)
{
- case ttypedseen:
- case tend:
- /* Make sure that the next char is not a '*'.
- This handles constructs like:
+ /* This handles constructs like:
typedef void OperatorFun (int fun); */
- if (*lp != '*')
- {
- typdef = tignore;
- make_tag (FALSE);
- }
+ make_C_tag (FALSE);
+ typdef = tignore;
+ fvdef = fignore;
break;
- } /* switch (typdef) */
- break;
- case ftagseen:
- funcdef = fstartlist;
+ }
+ /* FALLTHRU */
+ case foperator:
+ fvdef = fstartlist;
break;
case flistseen:
- funcdef = finlist;
+ fvdef = finlist;
break;
}
parlev++;
break;
if (objdef == ocatseen && parlev == 1)
{
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C category */
objdef = oignore;
}
if (--parlev == 0)
{
- switch (funcdef)
+ switch (fvdef)
{
case fstartlist:
case finlist:
- funcdef = flistseen;
+ fvdef = flistseen;
break;
}
- if (cblev == 0 && typdef == tend)
+ if (!instruct
+ && (typdef == tend
+ || typdef == ttypeseen))
{
typdef = tignore;
- make_tag (FALSE);
+ make_C_tag (FALSE); /* a typedef */
}
}
else if (parlev < 0) /* can happen due to ill-conceived #if's. */
case '{':
if (definedef != dnone)
break;
- if (typdef == ttypedseen)
- typdef = tinbody;
- switch (structdef)
+ if (typdef == ttypeseen)
{
- case skeyseen: /* unnamed struct */
- structtag = "_anonymous_";
- structdef = sinbody;
- break;
- case stagseen:
- case scolonseen: /* named struct */
- structdef = sinbody;
- make_tag (FALSE);
- break;
+ /* Whenever typdef is set to tinbody (currently only
+ here), typdefcblev should be set to cblev. */
+ typdef = tinbody;
+ typdefcblev = cblev;
}
- switch (funcdef)
+ switch (fvdef)
{
case flistseen:
- make_tag (TRUE);
+ make_C_tag (TRUE); /* a function */
/* FALLTHRU */
case fignore:
- funcdef = fnone;
+ fvdef = fvnone;
break;
- case fnone:
+ case fvnone:
switch (objdef)
{
case otagseen:
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C class */
objdef = oignore;
break;
case omethodtag:
case omethodparm:
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C method */
objdef = oinbody;
break;
default:
- /* Neutralize `extern "C" {' grot and look inside structs. */
- if (cblev == 0 && structdef == snone && typdef == tnone)
+ /* Neutralize `extern "C" {' grot. */
+ if (cblev == 0 && structdef == snone && nestlev == 0
+ && typdef == tnone)
cblev = -1;
}
}
+ switch (structdef)
+ {
+ case skeyseen: /* unnamed struct */
+ pushclass_above (cblev, NULL, 0);
+ structdef = snone;
+ break;
+ case stagseen: /* named struct or enum */
+ case scolonseen: /* a class */
+ pushclass_above (cblev, token.line+token.offset, token.length);
+ structdef = snone;
+ make_C_tag (FALSE); /* a struct or enum */
+ break;
+ }
cblev++;
break;
case '*':
if (definedef != dnone)
break;
- if (funcdef == fstartlist)
- funcdef = fnone; /* avoid tagging `foo' in `foo (*bar()) ()' */
+ if (fvdef == fstartlist)
+ fvdef = fvnone; /* avoid tagging `foo' in `foo (*bar()) ()' */
break;
case '}':
if (definedef != dnone)
}
else if (cblev > 0)
cblev--;
- if (cblev == 0)
+ popclass_above (cblev);
+ structdef = snone;
+ /* Only if typdef == tinbody is typdefcblev significant. */
+ if (typdef == tinbody && cblev <= typdefcblev)
{
- if (typdef == tinbody)
- typdef = tend;
- /* Memory leakage here: the string pointed by structtag is
- never released, because I fear to miss something and
- break things while freeing the area. The amount of
- memory leaked here is the sum of the lenghts of the
- struct tags.
- if (structdef == sinbody)
- free (structtag); */
-
- structdef = snone;
- structtag = "<error>";
+ assert (cblev == typdefcblev);
+ typdef = tend;
+ }
+ break;
+ case '=':
+ if (definedef != dnone)
+ break;
+ switch (fvdef)
+ {
+ case foperator:
+ case finlist:
+ case fignore:
+ case vignore:
+ break;
+ case fvnameseen:
+ if ((members && cblev == 1)
+ || (globals && cblev == 0 && (!fvextern || declarations)))
+ make_C_tag (FALSE); /* a variable */
+ /* FALLTHRU */
+ default:
+ fvdef = vignore;
}
break;
+ case '<':
+ if (cplpl && structdef == stagseen)
+ {
+ structdef = sintemplate;
+ break;
+ }
+ goto resetfvdef;
+ case '>':
+ if (structdef == sintemplate)
+ {
+ structdef = stagseen;
+ break;
+ }
+ goto resetfvdef;
case '+':
case '-':
if (objdef == oinbody && cblev == 0)
break;
}
/* FALLTHRU */
- case '=': case '#': case '~': case '&': case '%': case '/':
- case '|': case '^': case '!': case '<': case '>': case '.': case '?':
+ resetfvdef:
+ case '#': case '~': case '&': case '%': case '/': case '|':
+ case '^': case '!': case '.': case '?': case ']':
if (definedef != dnone)
break;
- /* These surely cannot follow a function tag. */
- if (funcdef != finlist && funcdef != fignore)
- funcdef = fnone;
+ /* These surely cannot follow a function tag in C. */
+ switch (fvdef)
+ {
+ case foperator:
+ case finlist:
+ case fignore:
+ case vignore:
+ break;
+ default:
+ fvdef = fvnone;
+ }
break;
case '\0':
if (objdef == otagseen)
{
- make_tag (TRUE);
+ make_C_tag (TRUE); /* an Objective C class */
objdef = oignore;
}
/* If a macro spans multiple lines don't reset its state. */
if (quotednl)
- CNL_SAVE_DEFINEDEF;
+ CNL_SAVE_DEFINEDEF ();
else
- CNL;
+ CNL ();
break;
} /* switch (c) */
} /* while not eof */
+
+ free (token_name.buffer);
+ free (lbs[0].lb.buffer);
+ free (lbs[1].lb.buffer);
}
/*
* Process either a C++ file or a C file depending on the setting
* of a global flag.
*/
-void
+static void
default_C_entries (inf)
FILE *inf;
{
- C_entries (cplusplus ? C_PLPL : 0, inf);
+ C_entries (cplusplus ? C_PLPL : C_AUTO, inf);
}
-/* Always do plain ANSI C. */
-void
+/* Always do plain C. */
+static void
plain_C_entries (inf)
FILE *inf;
{
}
/* Always do C++. */
-void
+static void
Cplusplus_entries (inf)
FILE *inf;
{
C_entries (C_PLPL, inf);
}
+/* Always do Java. */
+static void
+Cjava_entries (inf)
+ FILE *inf;
+{
+ C_entries (C_JAVA, inf);
+}
+
/* Always do C*. */
-void
+static void
Cstar_entries (inf)
FILE *inf;
{
}
/* Always do Yacc. */
-void
+static void
Yacc_entries (inf)
FILE *inf;
{
C_entries (YACC, inf);
}
-\f
-/* Fortran parsing */
-char *dbp;
+\f
+/* Useful macros. */
+#define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \
+ for (lineno = charno = 0; /* loop initialization */ \
+ !feof (file_pointer) /* loop test */ \
+ && (lineno++, /* instructions at start of loop */ \
+ linecharno = charno, \
+ charno += readline (&line_buffer, file_pointer), \
+ char_pointer = lb.buffer, \
+ TRUE); \
+ )
+#define LOOKING_AT(cp, keyword) /* keyword is a constant string */ \
+ (strneq ((cp), keyword, sizeof(keyword)-1) /* cp points at keyword */ \
+ && notinname ((cp)[sizeof(keyword)-1]) /* end of keyword */ \
+ && ((cp) = skip_spaces((cp)+sizeof(keyword)-1))) /* skip spaces */
-logical
-tail (cp)
- char *cp;
+/*
+ * Read a file, but do no processing. This is used to do regexp
+ * matching on files that have no language defined.
+ */
+static void
+just_read_file (inf)
+ FILE *inf;
{
- register int len = 0;
+ register char *dummy;
- while (*cp && lowcase(*cp) == lowcase(dbp[len]))
- cp++, len++;
- if (*cp == '\0' && !intoken(dbp[len]))
- {
- dbp += len;
- return TRUE;
- }
- return FALSE;
+ LOOP_ON_INPUT_LINES (inf, lb, dummy)
+ continue;
}
-void
-takeprec ()
+\f
+/* Fortran parsing */
+
+static void F_takeprec __P((void));
+static void F_getit __P((FILE *));
+
+static void
+F_takeprec ()
{
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (*dbp != '*')
return;
dbp++;
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (strneq (dbp, "(*)", 3))
{
dbp += 3;
return;
}
- if (!isdigit (*dbp))
+ if (!ISDIGIT (*dbp))
{
--dbp; /* force failure */
return;
}
do
dbp++;
- while (isdigit (*dbp));
+ while (ISDIGIT (*dbp));
}
-void
-getit (inf)
+static void
+F_getit (inf)
FILE *inf;
{
register char *cp;
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (*dbp == '\0')
{
lineno++;
if (dbp[5] != '&')
return;
dbp += 6;
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
}
- if (!isalpha (*dbp)
- && *dbp != '_'
- && *dbp != '$')
+ if (!ISALPHA (*dbp) && *dbp != '_' && *dbp != '$')
return;
- for (cp = dbp + 1;
- (*cp
- && (isalpha (*cp) || isdigit (*cp) || (*cp == '_') || (*cp == '$')));
- cp++)
+ for (cp = dbp + 1; *cp != '\0' && intoken (*cp); cp++)
continue;
- pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE,
+ pfnote (savenstr (dbp, cp-dbp), TRUE,
lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
}
-void
+
+static void
Fortran_functions (inf)
FILE *inf;
{
- lineno = 0;
- charno = 0;
-
- while (!feof (inf))
+ LOOP_ON_INPUT_LINES (inf, lb, dbp)
{
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- dbp = lb.buffer;
if (*dbp == '%')
dbp++; /* Ratfor escape to fortran */
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (*dbp == '\0')
continue;
switch (lowcase (*dbp))
{
case 'i':
- if (tail ("integer"))
- takeprec ();
+ if (nocase_tail ("integer"))
+ F_takeprec ();
break;
case 'r':
- if (tail ("real"))
- takeprec ();
+ if (nocase_tail ("real"))
+ F_takeprec ();
break;
case 'l':
- if (tail ("logical"))
- takeprec ();
+ if (nocase_tail ("logical"))
+ F_takeprec ();
break;
case 'c':
- if (tail ("complex") || tail ("character"))
- takeprec ();
+ if (nocase_tail ("complex") || nocase_tail ("character"))
+ F_takeprec ();
break;
case 'd':
- if (tail ("double"))
+ if (nocase_tail ("double"))
{
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (*dbp == '\0')
continue;
- if (tail ("precision"))
+ if (nocase_tail ("precision"))
break;
continue;
}
break;
}
- while (isspace (*dbp))
- dbp++;
+ dbp = skip_spaces (dbp);
if (*dbp == '\0')
continue;
switch (lowcase (*dbp))
{
case 'f':
- if (tail ("function"))
- getit (inf);
+ if (nocase_tail ("function"))
+ F_getit (inf);
continue;
case 's':
- if (tail ("subroutine"))
- getit (inf);
+ if (nocase_tail ("subroutine"))
+ F_getit (inf);
continue;
case 'e':
- if (tail ("entry"))
- getit (inf);
+ if (nocase_tail ("entry"))
+ F_getit (inf);
continue;
- case 'p':
- if (tail ("program"))
+ case 'b':
+ if (nocase_tail ("blockdata") || nocase_tail ("block data"))
{
- getit (inf);
- continue;
+ dbp = skip_spaces (dbp);
+ if (*dbp == '\0') /* assume un-named */
+ pfnote (savestr ("blockdata"), TRUE,
+ lb.buffer, dbp - lb.buffer, lineno, linecharno);
+ else
+ F_getit (inf); /* look for name */
}
- if (tail ("procedure"))
- getit (inf);
continue;
}
}
}
+
\f
/*
- * Bob Weiner, Motorola Inc., 4/3/94
- * Unix and microcontroller assembly tag handling
- * look for '^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]'
+ * Ada parsing
+ * Original code by
+ * Philippe Waroquiers <philippe.waroquiers@eurocontrol.be> (1998)
*/
-void
-Asm_labels (inf)
+
+static void Ada_getit __P((FILE *, char *));
+
+/* Once we are positioned after an "interesting" keyword, let's get
+ the real tag value necessary. */
+static void
+Ada_getit (inf, name_qualifier)
FILE *inf;
+ char *name_qualifier;
{
register char *cp;
-
- lineno = 0;
- charno = 0;
+ char *name;
+ char c;
while (!feof (inf))
{
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- cp = lb.buffer;
+ dbp = skip_spaces (dbp);
+ if (*dbp == '\0'
+ || (dbp[0] == '-' && dbp[1] == '-'))
+ {
+ lineno++;
+ linecharno = charno;
+ charno += readline (&lb, inf);
+ dbp = lb.buffer;
+ }
+ switch (lowcase(*dbp))
+ {
+ case 'b':
+ if (nocase_tail ("body"))
+ {
+ /* Skipping body of procedure body or package body or ....
+ resetting qualifier to body instead of spec. */
+ name_qualifier = "/b";
+ continue;
+ }
+ break;
+ case 't':
+ /* Skipping type of task type or protected type ... */
+ if (nocase_tail ("type"))
+ continue;
+ break;
+ }
+ if (*dbp == '"')
+ {
+ dbp += 1;
+ for (cp = dbp; *cp != '\0' && *cp != '"'; cp++)
+ continue;
+ }
+ else
+ {
+ dbp = skip_spaces (dbp);
+ for (cp = dbp;
+ (*cp != '\0'
+ && (ISALPHA (*cp) || ISDIGIT (*cp) || *cp == '_' || *cp == '.'));
+ cp++)
+ continue;
+ if (cp == dbp)
+ return;
+ }
+ c = *cp;
+ *cp = '\0';
+ name = concat (dbp, name_qualifier, "");
+ *cp = c;
+ pfnote (name, TRUE, lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ if (c == '"')
+ dbp = cp + 1;
+ return;
+ }
+}
+
+static void
+Ada_funcs (inf)
+ FILE *inf;
+{
+ bool inquote = FALSE;
+ LOOP_ON_INPUT_LINES (inf, lb, dbp)
+ {
+ while (*dbp != '\0')
+ {
+ /* Skip a string i.e. "abcd". */
+ if (inquote || (*dbp == '"'))
+ {
+ dbp = etags_strchr ((inquote) ? dbp : dbp+1, '"');
+ if (dbp != NULL)
+ {
+ inquote = FALSE;
+ dbp += 1;
+ continue; /* advance char */
+ }
+ else
+ {
+ inquote = TRUE;
+ break; /* advance line */
+ }
+ }
+
+ /* Skip comments. */
+ if (dbp[0] == '-' && dbp[1] == '-')
+ break; /* advance line */
+
+ /* Skip character enclosed in single quote i.e. 'a'
+ and skip single quote starting an attribute i.e. 'Image. */
+ if (*dbp == '\'')
+ {
+ dbp++ ;
+ if (*dbp != '\0')
+ dbp++;
+ continue;
+ }
+
+ /* Search for beginning of a token. */
+ if (!begtoken (*dbp))
+ {
+ dbp++;
+ continue; /* advance char */
+ }
+
+ /* We are at the beginning of a token. */
+ switch (lowcase(*dbp))
+ {
+ case 'f':
+ if (!packages_only && nocase_tail ("function"))
+ Ada_getit (inf, "/f");
+ else
+ break; /* from switch */
+ continue; /* advance char */
+ case 'p':
+ if (!packages_only && nocase_tail ("procedure"))
+ Ada_getit (inf, "/p");
+ else if (nocase_tail ("package"))
+ Ada_getit (inf, "/s");
+ else if (nocase_tail ("protected")) /* protected type */
+ Ada_getit (inf, "/t");
+ else
+ break; /* from switch */
+ continue; /* advance char */
+ case 't':
+ if (!packages_only && nocase_tail ("task"))
+ Ada_getit (inf, "/k");
+ else if (typedefs && !packages_only && nocase_tail ("type"))
+ {
+ Ada_getit (inf, "/t");
+ while (*dbp != '\0')
+ dbp += 1;
+ }
+ else
+ break; /* from switch */
+ continue; /* advance char */
+ }
+
+ /* Look for the end of the token. */
+ while (!endtoken (*dbp))
+ dbp++;
+
+ } /* advance char */
+ } /* advance line */
+}
+
+\f
+/*
+ * Unix and microcontroller assembly tag handling
+ * Labels: /^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]/
+ * Idea by Bob Weiner, Motorola Inc. (1994)
+ */
+static void
+Asm_labels (inf)
+ FILE *inf;
+{
+ register char *cp;
+
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
+ {
/* If first char is alphabetic or one of [_.$], test for colon
following identifier. */
- if (isalpha (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
+ if (ISALPHA (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
{
/* Read past label. */
cp++;
- while (isalnum (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
+ while (ISALNUM (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
cp++;
- if (*cp == ':' || isspace (*cp))
+ if (*cp == ':' || iswhite (*cp))
{
/* Found end of label, so copy it and add it to the table. */
- pfnote ((CTAGS) ? savenstr(lb.buffer, cp-lb.buffer) : NULL, TRUE,
+ pfnote (savenstr(lb.buffer, cp-lb.buffer), TRUE,
lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
}
}
}
}
+
\f
/*
- * Perl support by Bart Robinson <lomew@cs.utah.edu>
- * Perl sub names: look for /^sub[ \t\n]+[^ \t\n{]+/
+ * Perl support
+ * Perl sub names: /^sub[ \t\n]+[^ \t\n{]+/
+ * Perl variable names: /^(my|local).../
+ * Original code by Bart Robinson <lomew@cs.utah.edu> (1995)
+ * Additions by Michael Ernst <mernst@alum.mit.edu> (1997)
+ * Ideas by Kai Großjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE> (2001)
*/
-void
+static void
Perl_functions (inf)
FILE *inf;
{
+ char *package = savestr ("main"); /* current package name */
register char *cp;
- lineno = 0;
- charno = 0;
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
+ {
+ skip_spaces(cp);
- while (!feof (inf))
+ if (LOOKING_AT (cp, "package"))
+ {
+ free (package);
+ package = get_tag (cp);
+ if (package == NULL) /* can't parse package name */
+ package = savestr ("");
+ else
+ package = savestr(package); /* make a copy */
+ }
+ else if (LOOKING_AT (cp, "sub"))
+ {
+ char *name, *fullname, *pos;
+ char *sp = cp;
+
+ while (!notinname (*cp))
+ cp++;
+ if (cp == sp)
+ continue;
+ name = savenstr (sp, cp-sp);
+ if ((pos = etags_strchr (name, ':')) != NULL && pos[1] == ':')
+ fullname = name;
+ else
+ fullname = concat (package, "::", name);
+ pfnote (fullname, TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ if (name != fullname)
+ free (name);
+ }
+ else if (globals /* only if tagging global vars is enabled */
+ && (LOOKING_AT (cp, "my") || LOOKING_AT (cp, "local")))
+ {
+ /* After "my" or "local", but before any following paren or space. */
+ char *varname = NULL;
+
+ if (*cp == '$' || *cp == '@' || *cp == '%')
+ {
+ char* varstart = ++cp;
+ while (ISALNUM (*cp) || *cp == '_')
+ cp++;
+ varname = savenstr (varstart, cp-varstart);
+ }
+ else
+ {
+ /* Should be examining a variable list at this point;
+ could insist on seeing an open parenthesis. */
+ while (*cp != '\0' && *cp != ';' && *cp != '=' && *cp != ')')
+ cp++;
+ }
+
+ /* Perhaps I should back cp up one character, so the TAGS table
+ doesn't mention (and so depend upon) the following char. */
+ pfnote (varname, FALSE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ }
+}
+
+
+/*
+ * Python support
+ * Look for /^[\t]*def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/
+ * Idea by Eric S. Raymond <esr@thyrsus.com> (1997)
+ * More ideas by seb bacon <seb@jamkit.com> (2002)
+ */
+static void
+Python_functions (inf)
+ FILE *inf;
+{
+ register char *cp;
+
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
{
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- cp = lb.buffer;
+ cp = skip_spaces (cp);
+ if (LOOKING_AT (cp, "def") || LOOKING_AT (cp, "class"))
+ {
+ char *name = cp;
+ while (!notinname (*cp) && *cp != ':')
+ cp++;
+ pfnote (savenstr (name, cp-name), TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ }
+}
+
+\f
+/*
+ * PHP support
+ * Look for:
+ * - /^[ \t]*function[ \t\n]+[^ \t\n(]+/
+ * - /^[ \t]*class[ \t\n]+[^ \t\n]+/
+ * - /^[ \t]*define\(\"[^\"]+/
+ * Only with --members:
+ * - /^[ \t]*var[ \t\n]+\$[^ \t\n=;]/
+ * Idea by Diez B. Roggisch (2001)
+ */
+static void
+PHP_functions (inf)
+ FILE *inf;
+{
+ register char *cp, *name;
+ bool search_identifier = FALSE;
- if (*cp++ == 's' && *cp++ == 'u' && *cp++ == 'b' && isspace(*cp++))
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
+ {
+ cp = skip_spaces (cp);
+ name = cp;
+ if (search_identifier
+ && *cp != '\0')
+ {
+ while (!notinname (*cp))
+ cp++;
+ pfnote (savenstr (name, cp-name), TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ search_identifier = FALSE;
+ }
+ else if (LOOKING_AT (cp, "function"))
+ {
+ if(*cp == '&')
+ cp = skip_spaces (cp+1);
+ if(*cp != '\0')
+ {
+ name = cp;
+ while (!notinname (*cp))
+ cp++;
+ pfnote (savenstr (name, cp-name), TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ else
+ search_identifier = TRUE;
+ }
+ else if (LOOKING_AT (cp, "class"))
+ {
+ if (*cp != '\0')
+ {
+ name = cp;
+ while (*cp != '\0' && !iswhite (*cp))
+ cp++;
+ pfnote (savenstr (name, cp-name), FALSE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ else
+ search_identifier = TRUE;
+ }
+ else if (strneq (cp, "define", 6)
+ && (cp = skip_spaces (cp+6))
+ && *cp++ == '('
+ && (*cp == '"' || *cp == '\''))
{
- while (*cp && isspace(*cp))
+ char quote = *cp++;
+ name = cp;
+ while (*cp != quote && *cp != '\0')
cp++;
- while (*cp && ! isspace(*cp) && *cp != '{')
+ pfnote (savenstr (name, cp-name), FALSE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ else if (members
+ && LOOKING_AT (cp, "var")
+ && *cp == '$')
+ {
+ name = cp;
+ while (!notinname(*cp))
cp++;
- pfnote ((CTAGS) ? savenstr (lb.buffer, cp-lb.buffer) : NULL, TRUE,
+ pfnote (savenstr (name, cp-name), FALSE,
lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
}
}
}
+
+\f
+/*
+ * Cobol tag functions
+ * We could look for anything that could be a paragraph name.
+ * i.e. anything that starts in column 8 is one word and ends in a full stop.
+ * Idea by Corny de Souza (1993)
+ */
+static void
+Cobol_paragraphs (inf)
+ FILE *inf;
+{
+ register char *bp, *ep;
+
+ LOOP_ON_INPUT_LINES (inf, lb, bp)
+ {
+ if (lb.len < 9)
+ continue;
+ bp += 8;
+
+ /* If eoln, compiler option or comment ignore whole line. */
+ if (bp[-1] != ' ' || !ISALNUM (bp[0]))
+ continue;
+
+ for (ep = bp; ISALNUM (*ep) || *ep == '-'; ep++)
+ continue;
+ if (*ep++ == '.')
+ pfnote (savenstr (bp, ep-bp), TRUE,
+ lb.buffer, ep - lb.buffer + 1, lineno, linecharno);
+ }
+}
+
\f
-/* Added by Mosur Mohan, 4/22/88 */
-/* Pascal parsing */
-
-#define GET_NEW_LINE \
-{ \
- linecharno = charno; lineno++; \
- charno += 1 + readline (&lb, inf); \
- dbp = lb.buffer; \
+/*
+ * Makefile support
+ * Idea by Assar Westerlund <assar@sics.se> (2001)
+ */
+static void
+Makefile_targets (inf)
+ FILE *inf;
+{
+ register char *bp;
+
+ LOOP_ON_INPUT_LINES (inf, lb, bp)
+ {
+ if (*bp == '\t' || *bp == '#')
+ continue;
+ while (*bp != '\0' && *bp != '=' && *bp != ':')
+ bp++;
+ if (*bp == ':')
+ pfnote (savenstr (lb.buffer, bp - lb.buffer), TRUE,
+ lb.buffer, bp - lb.buffer + 1, lineno, linecharno);
+ }
}
+\f
/*
+ * Pascal parsing
+ * Original code by Mosur K. Mohan (1989)
+ *
* Locates tags for procedures & functions. Doesn't do any type- or
* var-definitions. It does look for the keyword "extern" or
* "forward" immediately following the procedure statement; if found,
* the tag is skipped.
*/
-void
+static void
Pascal_functions (inf)
FILE *inf;
{
- struct linebuffer tline; /* mostly copied from C_entries */
+ linebuffer tline; /* mostly copied from C_entries */
long save_lcno;
int save_lineno, save_len;
char c, *cp, *namebuf;
- logical /* each of these flags is TRUE iff: */
+ bool /* each of these flags is TRUE iff: */
incomment, /* point is inside a comment */
inquote, /* point is inside '..' string */
get_tagname, /* point is after PROCEDURE/FUNCTION
is a FORWARD/EXTERN to be ignored, or
whether it is a real tag */
+ save_lcno = save_lineno = save_len = 0; /* keep compiler quiet */
+ namebuf = NULL; /* keep compiler quiet */
lineno = 0;
charno = 0;
dbp = lb.buffer;
*dbp = '\0';
- save_len = 0;
initbuffer (&tline);
incomment = inquote = FALSE;
inparms = FALSE; /* found '(' after "proc" */
verify_tag = FALSE; /* check if "extern" is ahead */
- /* long main loop to get next char */
- while (!feof (inf))
+
+ while (!feof (inf)) /* long main loop to get next char */
{
c = *dbp++;
if (c == '\0') /* if end of line */
{
- GET_NEW_LINE;
+ lineno++;
+ linecharno = charno;
+ charno += readline (&lb, inf);
+ dbp = lb.buffer;
if (*dbp == '\0')
continue;
- if (!((found_tag && verify_tag) ||
- get_tagname))
+ if (!((found_tag && verify_tag)
+ || get_tagname))
c = *dbp++; /* only if don't need *dbp pointing
to the beginning of the name of
the procedure or function */
continue;
if (lowcase (*dbp == 'e'))
{
- if (tail ("extern")) /* superfluous, really! */
+ if (nocase_tail ("extern")) /* superfluous, really! */
{
found_tag = FALSE;
verify_tag = FALSE;
}
else if (lowcase (*dbp) == 'f')
{
- if (tail ("forward")) /* check for forward reference */
+ if (nocase_tail ("forward")) /* check for forward reference */
{
found_tag = FALSE;
verify_tag = FALSE;
continue;
/* save all values for later tagging */
- GROW_LINEBUFFER (tline, strlen (lb.buffer) + 1);
+ linebuffer_setlen (&tline, lb.len);
strcpy (tline.buffer, lb.buffer);
save_lineno = lineno;
save_lcno = linecharno;
/* grab block name */
- for (cp = dbp + 1; *cp && (!endtoken (*cp)); cp++)
+ for (cp = dbp + 1; *cp != '\0' && !endtoken (*cp); cp++)
continue;
- namebuf = (CTAGS) ? savenstr (dbp, cp-dbp) : NULL;
+ namebuf = savenstr (dbp, cp-dbp);
dbp = cp; /* set dbp to e-o-token */
save_len = dbp - lb.buffer + 1;
get_tagname = FALSE;
switch (lowcase (c))
{
case 'p':
- if (tail ("rocedure")) /* c = 'p', dbp has advanced */
+ if (nocase_tail ("rocedure")) /* c = 'p', dbp has advanced */
get_tagname = TRUE;
continue;
case 'f':
- if (tail ("unction"))
+ if (nocase_tail ("unction"))
get_tagname = TRUE;
continue;
}
free (tline.buffer);
}
+
\f
/*
- * lisp tag functions
+ * Lisp tag functions
* look for (def or (DEF, quote or QUOTE
*/
-int
-L_isdef (strp)
- register char *strp;
-{
- return ((strp[1] == 'd' || strp[1] == 'D')
- && (strp[2] == 'e' || strp[2] == 'E')
- && (strp[3] == 'f' || strp[3] == 'F'));
-}
-int
-L_isquote (strp)
- register char *strp;
-{
- return ((*(++strp) == 'q' || *strp == 'Q')
- && (*(++strp) == 'u' || *strp == 'U')
- && (*(++strp) == 'o' || *strp == 'O')
- && (*(++strp) == 't' || *strp == 'T')
- && (*(++strp) == 'e' || *strp == 'E')
- && isspace(*(++strp)));
-}
+static void L_getit __P((void));
-void
+static void
L_getit ()
{
- register char *cp;
-
if (*dbp == '\'') /* Skip prefix quote */
dbp++;
- else if (*dbp == '(' && L_isquote (dbp)) /* Skip "(quote " */
+ else if (*dbp == '(')
{
- dbp += 7;
- while (isspace(*dbp))
- dbp++;
+ dbp++;
+ /* Try to skip "(quote " */
+ if (!LOOKING_AT (dbp, "quote") && !LOOKING_AT (dbp, "QUOTE"))
+ /* Ok, then skip "(" before name in (defstruct (foo)) */
+ dbp = skip_spaces (dbp);
}
- for (cp = dbp /*+1*/;
- *cp && *cp != '(' && *cp != ' ' && *cp != ')';
- cp++)
- continue;
- if (cp == dbp)
- return;
-
- pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE,
- lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ get_tag (dbp);
}
-void
+static void
Lisp_functions (inf)
FILE *inf;
{
- lineno = 0;
- charno = 0;
-
- while (!feof (inf))
+ LOOP_ON_INPUT_LINES (inf, lb, dbp)
{
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- dbp = lb.buffer;
- if (dbp[0] == '(')
+ if (dbp[0] != '(')
+ continue;
+
+ if (strneq (dbp+1, "def", 3) || strneq (dbp+1, "DEF", 3))
{
- if (L_isdef (dbp))
- {
- while (!isspace (*dbp))
- dbp++;
- while (isspace (*dbp))
- dbp++;
- L_getit ();
- }
- else
+ dbp = skip_non_spaces (dbp);
+ dbp = skip_spaces (dbp);
+ L_getit ();
+ }
+ else
+ {
+ /* Check for (foo::defmumble name-defined ... */
+ do
+ dbp++;
+ while (!notinname (*dbp) && *dbp != ':');
+ if (*dbp == ':')
{
- /* Check for (foo::defmumble name-defined ... */
do
dbp++;
- while (*dbp && !isspace (*dbp)
- && *dbp != ':' && *dbp != '(' && *dbp != ')');
- if (*dbp == ':')
- {
- do
- dbp++;
- while (*dbp == ':');
+ while (*dbp == ':');
- if (L_isdef (dbp - 1))
- {
- while (!isspace (*dbp))
- dbp++;
- while (isspace (*dbp))
- dbp++;
- L_getit ();
- }
+ if (strneq (dbp, "def", 3) || strneq (dbp, "DEF", 3))
+ {
+ dbp = skip_non_spaces (dbp);
+ dbp = skip_spaces (dbp);
+ L_getit ();
}
}
}
}
}
+
+\f
+/*
+ * Postscript tag functions
+ * Just look for lines where the first character is '/'
+ * Also look at "defineps" for PSWrap
+ * Ideas by:
+ * Richard Mlynarik <mly@adoc.xerox.com> (1997)
+ * Masatake Yamato <masata-y@is.aist-nara.ac.jp> (1999)
+ */
+static void
+Postscript_functions (inf)
+ FILE *inf;
+{
+ register char *bp, *ep;
+
+ LOOP_ON_INPUT_LINES (inf, lb, bp)
+ {
+ if (bp[0] == '/')
+ {
+ for (ep = bp+1;
+ *ep != '\0' && *ep != ' ' && *ep != '{';
+ ep++)
+ continue;
+ pfnote (savenstr (bp, ep-bp), TRUE,
+ lb.buffer, ep - lb.buffer + 1, lineno, linecharno);
+ }
+ else if (LOOKING_AT (bp, "defineps"))
+ get_tag (bp);
+ }
+}
+
\f
/*
* Scheme tag functions
* look for (def... xyzzy
- * look for (def... (xyzzy
- * look for (def ... ((...(xyzzy ....
- * look for (set! xyzzy
+ * (def... (xyzzy
+ * (def ... ((...(xyzzy ....
+ * (set! xyzzy
+ * Original code by Ken Haase (1985?)
*/
-void get_scheme ();
-
-void
+static void
Scheme_functions (inf)
FILE *inf;
{
- lineno = 0;
- charno = 0;
+ register char *bp;
- while (!feof (inf))
+ LOOP_ON_INPUT_LINES (inf, lb, bp)
{
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- dbp = lb.buffer;
- if (dbp[0] == '(' &&
- (dbp[1] == 'D' || dbp[1] == 'd') &&
- (dbp[2] == 'E' || dbp[2] == 'e') &&
- (dbp[3] == 'F' || dbp[3] == 'f'))
+ if (strneq (bp, "(def", 4) || strneq (bp, "(DEF", 4))
{
- while (!isspace (*dbp))
- dbp++;
+ bp = skip_non_spaces (bp+4);
/* Skip over open parens and white space */
- while (*dbp && (isspace (*dbp) || *dbp == '('))
- dbp++;
- get_scheme ();
- }
- if (dbp[0] == '(' &&
- (dbp[1] == 'S' || dbp[1] == 's') &&
- (dbp[2] == 'E' || dbp[2] == 'e') &&
- (dbp[3] == 'T' || dbp[3] == 't') &&
- (dbp[4] == '!' || dbp[4] == '!') &&
- (isspace (dbp[5])))
- {
- while (!isspace (*dbp))
- dbp++;
- /* Skip over white space */
- while (isspace (*dbp))
- dbp++;
- get_scheme ();
+ while (notinname (*bp))
+ bp++;
+ get_tag (bp);
}
+ if (LOOKING_AT (bp, "(SET!") || LOOKING_AT (bp, "(set!"))
+ get_tag (bp);
}
}
-void
-get_scheme ()
-{
- register char *cp;
-
- if (*dbp == '\0')
- return;
- /* Go till you get to white space or a syntactic break */
- for (cp = dbp + 1;
- *cp && *cp != '(' && *cp != ')' && !isspace (*cp);
- cp++)
- continue;
- pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE,
- lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
-}
\f
/* Find tags in TeX and LaTeX input files. */
int len;
};
-struct TEX_tabent *TEX_toktab = NULL; /* Table with tag tokens */
+static struct TEX_tabent *TEX_toktab = NULL; /* Table with tag tokens */
/* Default set of control sequences to put into TEX_toktab.
The value of environment var TEXTAGS is prepended to this. */
-char *TEX_defenv = "\
+static char *TEX_defenv = "\
:chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
:part:appendix:entry:index";
-void TEX_mode ();
-struct TEX_tabent *TEX_decode_env ();
-int TEX_Token ();
-#if TeX_named_tokens
-void TEX_getit ();
-#endif
+static void TEX_mode __P((FILE *));
+static struct TEX_tabent *TEX_decode_env __P((char *, char *));
+static int TEX_Token __P((char *));
-char TEX_esc = '\\';
-char TEX_opgrp = '{';
-char TEX_clgrp = '}';
+static char TEX_esc = '\\';
+static char TEX_opgrp = '{';
+static char TEX_clgrp = '}';
/*
* TeX/LaTeX scanning loop.
*/
-void
-TeX_functions (inf)
+static void
+TeX_commands (inf)
FILE *inf;
{
- char *lasthit;
-
- lineno = 0;
- charno = 0;
+ char *cp, *lasthit;
+ register int i;
/* Select either \ or ! as escape character. */
TEX_mode (inf);
if (!TEX_toktab)
TEX_toktab = TEX_decode_env ("TEXTAGS", TEX_defenv);
- while (!feof (inf))
- { /* Scan each line in file */
- lineno++;
- linecharno = charno;
- charno += readline (&lb, inf);
- dbp = lb.buffer;
- lasthit = dbp;
- while (dbp = etags_strchr (dbp, TEX_esc)) /* Look at each esc in line */
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
+ {
+ lasthit = cp;
+ /* Look at each esc in line. */
+ while ((cp = etags_strchr (cp, TEX_esc)) != NULL)
{
- register int i;
-
- if (!*(++dbp))
+ if (*++cp == '\0')
break;
- linecharno += dbp - lasthit;
- lasthit = dbp;
+ linecharno += cp - lasthit;
+ lasthit = cp;
i = TEX_Token (lasthit);
- if (0 <= i)
+ if (i >= 0)
{
- pfnote (NULL, TRUE,
- lb.buffer, strlen (lb.buffer), lineno, linecharno);
-#if TeX_named_tokens
- TEX_getit (lasthit, TEX_toktab[i].len);
-#endif
- break; /* We only save a line once */
+ register char *p;
+ for (lasthit += TEX_toktab[i].len;
+ *lasthit == TEX_esc || *lasthit == TEX_opgrp;
+ lasthit++)
+ continue;
+ for (p = lasthit;
+ !iswhite (*p) && *p != TEX_opgrp && *p != TEX_clgrp;
+ p++)
+ continue;
+ pfnote (savenstr (lasthit, p-lasthit), TRUE,
+ lb.buffer, lb.len, lineno, linecharno);
+ break; /* We only tag a line once */
}
}
}
/* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
chars accordingly. */
-void
+static void
TEX_mode (inf)
FILE *inf;
{
TEX_opgrp = '<';
TEX_clgrp = '>';
}
+ /* If the input file is compressed, inf is a pipe, and rewind may fail.
+ No attempt is made to correct the situation. */
rewind (inf);
}
/* Read environment and prepend it to the default string.
Build token table. */
-struct TEX_tabent *
+static struct TEX_tabent *
TEX_decode_env (evarname, defenv)
char *evarname;
char *defenv;
if (!env)
env = defenv;
else
- env = concat (env, defenv, "");
+ {
+ char *oldenv = env;
+ env = concat (oldenv, defenv, "");
+ }
/* Allocate a token table */
for (size = 1, p = env; p;)
- if ((p = etags_strchr (p, ':')) && *(++p))
+ if ((p = etags_strchr (p, ':')) && *++p != '\0')
size++;
/* Add 1 to leave room for null terminator. */
tab = xnew (size + 1, struct TEX_tabent);
return tab;
}
-#if TeX_named_tokens
-/* Record a tag defined by a TeX command of length LEN and starting at NAME.
- The name being defined actually starts at (NAME + LEN + 1).
- But we seem to include the TeX command in the tag name. */
-void
-TEX_getit (name, len)
- char *name;
- int len;
-{
- char *p = name + len;
-
- if (*name == '\0')
- return;
-
- /* Let tag name extend to next group close (or end of line) */
- while (*p && *p != TEX_clgrp)
- p++;
- pfnote (savenstr (name, p-name), TRUE,
- lb.buffer, strlen (lb.buffer), lineno, linecharno);
-}
-#endif
-
/* If the text at CP matches one of the tag-defining TeX command names,
return the pointer to the first occurrence of that command in TEX_toktab.
Otherwise return -1.
- Keep the capital `T' in `Token' for dumb truncating compilers
+ Keep the capital `T' in `token' for dumb truncating compilers
(this distinguishes it from `TEX_toktab' */
-int
+static int
TEX_Token (cp)
char *cp;
{
return i;
return -1;
}
+
\f
-/* Support for Prolog. */
+/* Texinfo support. Dave Love, Mar. 2000. */
+static void
+Texinfo_nodes (inf)
+ FILE * inf;
+{
+ char *cp, *start;
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
+ if (LOOKING_AT (cp, "@node"))
+ {
+ start = cp;
+ while (*cp != '\0' && *cp != ',')
+ cp++;
+ pfnote (savenstr (start, cp - start), TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+}
-/* Whole head (not only functor, but also arguments)
- is gotten in compound term. */
-void
-prolog_getit (s)
- char *s;
+\f
+/*
+ * Prolog support
+ *
+ * Assumes that the predicate or rule starts at column 0.
+ * Only the first clause of a predicate or rule is added.
+ * Original code by Sunichirou Sugou (1989)
+ * Rewritten by Anders Lindgren (1996)
+ */
+static int prolog_pr __P((char *, char *));
+static void prolog_skip_comment __P((linebuffer *, FILE *));
+static int prolog_atom __P((char *, int));
+
+static void
+Prolog_functions (inf)
+ FILE *inf;
{
- char *save_s;
- int insquote, npar;
+ char *cp, *last;
+ int len;
+ int allocated;
- save_s = s;
- insquote = FALSE;
- npar = 0;
- while (1)
+ allocated = 0;
+ len = 0;
+ last = NULL;
+
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
{
- if (s[0] == '\0') /* syntax error. */
- return;
- else if (insquote && s[0] == '\'' && s[1] == '\'')
- s += 2;
- else if (s[0] == '\'')
+ if (cp[0] == '\0') /* Empty line */
+ continue;
+ else if (iswhite (cp[0])) /* Not a predicate */
+ continue;
+ else if (cp[0] == '/' && cp[1] == '*') /* comment. */
+ prolog_skip_comment (&lb, inf);
+ else if ((len = prolog_pr (cp, last)) > 0)
{
- insquote = !insquote;
- s++;
+ /* Predicate or rule. Store the function name so that we
+ only generate a tag for the first clause. */
+ if (last == NULL)
+ last = xnew(len + 1, char);
+ else if (len + 1 > allocated)
+ xrnew (last, len + 1, char);
+ allocated = len + 1;
+ strncpy (last, cp, len);
+ last[len] = '\0';
}
- else if (!insquote && s[0] == '(')
+ }
+}
+
+
+static void
+prolog_skip_comment (plb, inf)
+ linebuffer *plb;
+ FILE *inf;
+{
+ char *cp;
+
+ do
+ {
+ for (cp = plb->buffer; *cp != '\0'; cp++)
+ if (cp[0] == '*' && cp[1] == '/')
+ return;
+ lineno++;
+ linecharno += readline (plb, inf);
+ }
+ while (!feof(inf));
+}
+
+/*
+ * A predicate or rule definition is added if it matches:
+ * <beginning of line><Prolog Atom><whitespace>(
+ * or <beginning of line><Prolog Atom><whitespace>:-
+ *
+ * It is added to the tags database if it doesn't match the
+ * name of the previous clause header.
+ *
+ * Return the size of the name of the predicate or rule, or 0 if no
+ * header was found.
+ */
+static int
+prolog_pr (s, last)
+ char *s;
+ char *last; /* Name of last clause. */
+{
+ int pos;
+ int len;
+
+ pos = prolog_atom (s, 0);
+ if (pos < 1)
+ return 0;
+
+ len = pos;
+ pos = skip_spaces (s + pos) - s;
+
+ if ((s[pos] == '.'
+ || (s[pos] == '(' && (pos += 1))
+ || (s[pos] == ':' && s[pos + 1] == '-' && (pos += 2)))
+ && (last == NULL /* save only the first clause */
+ || len != strlen (last)
+ || !strneq (s, last, len)))
{
- npar++;
- s++;
+ pfnote (savenstr (s, len), TRUE, s, pos, lineno, linecharno);
+ return len;
}
- else if (!insquote && s[0] == ')')
+ else
+ return 0;
+}
+
+/*
+ * Consume a Prolog atom.
+ * Return the number of bytes consumed, or -1 if there was an error.
+ *
+ * A prolog atom, in this context, could be one of:
+ * - An alphanumeric sequence, starting with a lower case letter.
+ * - A quoted arbitrary string. Single quotes can escape themselves.
+ * Backslash quotes everything.
+ */
+static int
+prolog_atom (s, pos)
+ char *s;
+ int pos;
+{
+ int origpos;
+
+ origpos = pos;
+
+ if (ISLOWER(s[pos]) || (s[pos] == '_'))
+ {
+ /* The atom is unquoted. */
+ pos++;
+ while (ISALNUM(s[pos]) || (s[pos] == '_'))
{
- npar--;
- s++;
- if (npar == 0)
- break;
- else if (npar < 0) /* syntax error. */
- return;
+ pos++;
}
- else if (!insquote && s[0] == '.'
- && (isspace (s[1]) || s[1] == '\0'))
- { /* fullstop. */
- if (npar != 0) /* syntax error. */
- return;
- s++;
- break;
+ return pos - origpos;
+ }
+ else if (s[pos] == '\'')
+ {
+ pos++;
+
+ while (1)
+ {
+ if (s[pos] == '\'')
+ {
+ pos++;
+ if (s[pos] != '\'')
+ break;
+ pos++; /* A double quote */
+ }
+ else if (s[pos] == '\0')
+ /* Multiline quoted atoms are ignored. */
+ return -1;
+ else if (s[pos] == '\\')
+ {
+ if (s[pos+1] == '\0')
+ return -1;
+ pos += 2;
+ }
+ else
+ pos++;
}
- else
- s++;
+ return pos - origpos;
}
- pfnote ((CTAGS) ? savenstr (save_s, s-save_s) : NULL, TRUE,
- save_s, s-save_s, lineno, linecharno);
+ else
+ return -1;
}
-/* It is assumed that prolog predicate starts from column 0. */
-void
-Prolog_functions (inf)
+\f
+/*
+ * Support for Erlang
+ *
+ * Generates tags for functions, defines, and records.
+ * Assumes that Erlang functions start at column 0.
+ * Original code by Anders Lindgren (1996)
+ */
+static int erlang_func __P((char *, char *));
+static void erlang_attribute __P((char *));
+static int erlang_atom __P((char *, int));
+
+static void
+Erlang_functions (inf)
FILE *inf;
{
- void skip_comment (), prolog_getit ();
+ char *cp, *last;
+ int len;
+ int allocated;
- lineno = linecharno = charno = 0;
- while (!feof (inf))
+ allocated = 0;
+ len = 0;
+ last = NULL;
+
+ LOOP_ON_INPUT_LINES (inf, lb, cp)
{
- lineno++;
- linecharno += charno;
- charno = readline (&lb, inf) + 1; /* 1 for newline. */
- dbp = lb.buffer;
- if (isspace (dbp[0])) /* not predicate header. */
+ if (cp[0] == '\0') /* Empty line */
continue;
- else if (dbp[0] == '%') /* comment. */
+ else if (iswhite (cp[0])) /* Not function nor attribute */
continue;
- else if (dbp[0] == '/' && dbp[1] == '*') /* comment. */
- skip_comment (&lb, inf, &lineno, &linecharno);
- else /* found. */
- prolog_getit (dbp);
+ else if (cp[0] == '%') /* comment */
+ continue;
+ else if (cp[0] == '"') /* Sometimes, strings start in column one */
+ continue;
+ else if (cp[0] == '-') /* attribute, e.g. "-define" */
+ {
+ erlang_attribute (cp);
+ last = NULL;
+ }
+ else if ((len = erlang_func (cp, last)) > 0)
+ {
+ /*
+ * Function. Store the function name so that we only
+ * generates a tag for the first clause.
+ */
+ if (last == NULL)
+ last = xnew (len + 1, char);
+ else if (len + 1 > allocated)
+ xrnew (last, len + 1, char);
+ allocated = len + 1;
+ strncpy (last, cp, len);
+ last[len] = '\0';
+ }
+ }
+}
+
+
+/*
+ * A function definition is added if it matches:
+ * <beginning of line><Erlang Atom><whitespace>(
+ *
+ * It is added to the tags database if it doesn't match the
+ * name of the previous clause header.
+ *
+ * Return the size of the name of the function, or 0 if no function
+ * was found.
+ */
+static int
+erlang_func (s, last)
+ char *s;
+ char *last; /* Name of last clause. */
+{
+ int pos;
+ int len;
+
+ pos = erlang_atom (s, 0);
+ if (pos < 1)
+ return 0;
+
+ len = pos;
+ pos = skip_spaces (s + pos) - s;
+
+ /* Save only the first clause. */
+ if (s[pos++] == '('
+ && (last == NULL
+ || len != (int)strlen (last)
+ || !strneq (s, last, len)))
+ {
+ pfnote (savenstr (s, len), TRUE, s, pos, lineno, linecharno);
+ return len;
+ }
+
+ return 0;
+}
+
+
+/*
+ * Handle attributes. Currently, tags are generated for defines
+ * and records.
+ *
+ * They are on the form:
+ * -define(foo, bar).
+ * -define(Foo(M, N), M+N).
+ * -record(graph, {vtab = notable, cyclic = true}).
+ */
+static void
+erlang_attribute (s)
+ char *s;
+{
+ int pos;
+ int len;
+
+ if (LOOKING_AT (s, "-define") || LOOKING_AT (s, "-record"))
+ {
+ if (s[pos++] == '(')
+ {
+ pos = skip_spaces (s + pos) - s;
+ len = erlang_atom (s, pos);
+ if (len != 0)
+ pfnote (savenstr (& s[pos], len), TRUE,
+ s, pos + len, lineno, linecharno);
+ }
}
+ return;
}
-void
-skip_comment (plb, inf, plineno, plinecharno)
- struct linebuffer *plb;
- FILE *inf;
- int *plineno; /* result */
- long *plinecharno; /* result */
+
+/*
+ * Consume an Erlang atom (or variable).
+ * Return the number of bytes consumed, or -1 if there was an error.
+ */
+static int
+erlang_atom (s, pos)
+ char *s;
+ int pos;
{
- char *cp;
+ int origpos;
- do
+ origpos = pos;
+
+ if (ISALPHA (s[pos]) || s[pos] == '_')
{
- for (cp = plb->buffer; *cp != '\0'; cp++)
- if (cp[0] == '*' && cp[1] == '/')
- return;
- (*plineno)++;
- *plinecharno += readline (plb, inf) + 1; /* 1 for newline. */
+ /* The atom is unquoted. */
+ pos++;
+ while (ISALNUM (s[pos]) || s[pos] == '_')
+ pos++;
+ return pos - origpos;
}
- while (!feof(inf));
+ else if (s[pos] == '\'')
+ {
+ pos++;
+
+ while (1)
+ {
+ if (s[pos] == '\'')
+ {
+ pos++;
+ break;
+ }
+ else if (s[pos] == '\0')
+ /* Multiline quoted atoms are ignored. */
+ return -1;
+ else if (s[pos] == '\\')
+ {
+ if (s[pos+1] == '\0')
+ return -1;
+ pos += 2;
+ }
+ else
+ pos++;
+ }
+ return pos - origpos;
+ }
+ else
+ return -1;
}
+
\f
#ifdef ETAGS_REGEXPS
+
+static char *scan_separators __P((char *));
+static void analyse_regex __P((char *, bool));
+static void add_regex __P((char *, bool, language *));
+static char *substitute __P((char *, char *, struct re_registers *));
+
/* Take a string like "/blah/" and turn it into "blah", making sure
that the first and last characters are the same, and handling
- quoted separator characters. Actually, stops on the occurence of
+ quoted separator characters. Actually, stops on the occurrence of
an unquoted separator. Also turns "\t" into a Tab character.
Returns pointer to terminating separator. Works in place. Null
terminates name string. */
-char *
+static char *
scan_separators (name)
char *name;
{
char sep = name[0];
char *copyto = name;
- logical quoted = FALSE;
+ bool quoted = FALSE;
for (++name; *name != '\0'; ++name)
{
return name;
}
+/* Look at the argument of --regex or --no-regex and do the right
+ thing. Same for each line of a regexp file. */
+static void
+analyse_regex (regex_arg, ignore_case)
+ char *regex_arg;
+ bool ignore_case;
+{
+ if (regex_arg == NULL)
+ {
+ free_patterns (); /* --no-regex: remove existing regexps */
+ return;
+ }
+
+ /* A real --regexp option or a line in a regexp file. */
+ switch (regex_arg[0])
+ {
+ /* Comments in regexp file or null arg to --regex. */
+ case '\0':
+ case ' ':
+ case '\t':
+ break;
+
+ /* Read a regex file. This is recursive and may result in a
+ loop, which will stop when the file descriptors are exhausted. */
+ case '@':
+ {
+ FILE *regexfp;
+ linebuffer regexbuf;
+ char *regexfile = regex_arg + 1;
+
+ /* regexfile is a file containing regexps, one per line. */
+ regexfp = fopen (regexfile, "r");
+ if (regexfp == NULL)
+ {
+ pfatal (regexfile);
+ return;
+ }
+ initbuffer (®exbuf);
+ while (readline_internal (®exbuf, regexfp) > 0)
+ analyse_regex (regexbuf.buffer, ignore_case);
+ free (regexbuf.buffer);
+ fclose (regexfp);
+ }
+ break;
+
+ /* Regexp to be used for a specific language only. */
+ case '{':
+ {
+ language *lang;
+ char *lang_name = regex_arg + 1;
+ char *cp;
+
+ for (cp = lang_name; *cp != '}'; cp++)
+ if (*cp == '\0')
+ {
+ error ("unterminated language name in regex: %s", regex_arg);
+ return;
+ }
+ *cp = '\0';
+ lang = get_language_from_langname (lang_name);
+ if (lang == NULL)
+ return;
+ add_regex (cp + 1, ignore_case, lang);
+ }
+ break;
+
+ /* Regexp to be used for any language. */
+ default:
+ add_regex (regex_arg, ignore_case, NULL);
+ break;
+ }
+}
+
/* Turn a name, which is an ed-style (but Emacs syntax) regular
expression, into a real regular expression by compiling it. */
-void
-add_regex (regexp_pattern)
+static void
+add_regex (regexp_pattern, ignore_case, lang)
char *regexp_pattern;
+ bool ignore_case;
+ language *lang;
{
+ static struct re_pattern_buffer zeropattern;
char *name;
const char *err;
struct re_pattern_buffer *patbuf;
+ pattern *pp;
- if (regexp_pattern == NULL)
- {
- /* Remove existing regexps. */
- num_patterns = 0;
- patterns = NULL;
- return;
- }
- if (regexp_pattern[0] == '\0')
- {
- error ("missing regexp", 0);
- return;
- }
if (regexp_pattern[strlen(regexp_pattern)-1] != regexp_pattern[0])
{
error ("%s: unterminated regexp", regexp_pattern);
name = scan_separators (regexp_pattern);
if (regexp_pattern[0] == '\0')
{
- error ("null regexp", 0);
+ error ("null regexp", (char *)NULL);
return;
}
(void) scan_separators (name);
patbuf = xnew (1, struct re_pattern_buffer);
- patbuf->translate = NULL;
- patbuf->fastmap = NULL;
- patbuf->buffer = NULL;
- patbuf->allocated = 0;
+ *patbuf = zeropattern;
+ if (ignore_case)
+ patbuf->translate = lc_trans; /* translation table to fold case */
err = re_compile_pattern (regexp_pattern, strlen (regexp_pattern), patbuf);
if (err != NULL)
return;
}
- num_patterns += 1;
- if (num_patterns == 1)
- patterns = xnew (1, struct pattern);
- else
- patterns = ((struct pattern *)
- xrealloc (patterns,
- (num_patterns * sizeof (struct pattern))));
- patterns[num_patterns - 1].pattern = patbuf;
- patterns[num_patterns - 1].name_pattern = savestr (name);
- patterns[num_patterns - 1].error_signaled = FALSE;
+ pp = p_head;
+ p_head = xnew (1, pattern);
+ p_head->regex = savestr (regexp_pattern);
+ p_head->p_next = pp;
+ p_head->lang = lang;
+ p_head->pat = patbuf;
+ p_head->name_pattern = savestr (name);
+ p_head->error_signaled = FALSE;
}
/*
* Do the substitutions indicated by the regular expression and
* arguments.
*/
-char *
+static char *
substitute (in, out, regs)
char *in, *out;
struct re_registers *regs;
{
- char *result = NULL, *t;
- int size = 0;
+ char *result, *t;
+ int size, dig, diglen;
+
+ result = NULL;
+ size = strlen (out);
+
+ /* Pass 1: figure out how much to allocate by finding all \N strings. */
+ if (out[size - 1] == '\\')
+ fatal ("pattern error in \"%s\"", out);
+ for (t = etags_strchr (out, '\\');
+ t != NULL;
+ t = etags_strchr (t + 2, '\\'))
+ if (ISDIGIT (t[1]))
+ {
+ dig = t[1] - '0';
+ diglen = regs->end[dig] - regs->start[dig];
+ size += diglen - 2;
+ }
+ else
+ size -= 1;
+
+ /* Allocate space and do the substitutions. */
+ result = xnew (size + 1, char);
+
+ for (t = result; *out != '\0'; out++)
+ if (*out == '\\' && ISDIGIT (*++out))
+ {
+ dig = *out - '0';
+ diglen = regs->end[dig] - regs->start[dig];
+ strncpy (t, in + regs->start[dig], diglen);
+ t += diglen;
+ }
+ else
+ *t++ = *out;
+ *t = '\0';
+
+ assert (t <= result + size && t - result == (int)strlen (result));
+
+ return result;
+}
- /* Pass 1: figure out how much size to allocate. */
- for (t = out; *t; ++t)
+/* Deallocate all patterns. */
+static void
+free_patterns ()
+{
+ pattern *pp;
+ while (p_head != NULL)
{
- if (*t == '\\')
- {
- ++t;
- if (!*t)
- {
- fprintf (stderr, "%s: pattern subtitution ends prematurely\n",
- progname);
- return NULL;
- }
- if (isdigit (*t))
- {
- int dig = *t - '0';
- size += regs->end[dig] - regs->start[dig];
- }
- }
+ pp = p_head->p_next;
+ free (p_head->regex);
+ free (p_head->name_pattern);
+ free (p_head);
+ p_head = pp;
}
+ return;
+}
+#endif /* ETAGS_REGEXPS */
- /* Allocate space and do the substitutions. */
- result = xnew (size + 1, char);
- size = 0;
- for (; *out; ++out)
+\f
+static bool
+nocase_tail (cp)
+ char *cp;
+{
+ register int len = 0;
+
+ while (*cp != '\0' && lowcase (*cp) == lowcase (dbp[len]))
+ cp++, len++;
+ if (*cp == '\0' && !intoken (dbp[len]))
{
- if (*out == '\\')
- {
- ++out;
- if (isdigit (*out))
- {
- /* Using "dig2" satisfies my debugger. Bleah. */
- int dig2 = *out - '0';
- strncpy (result + size, in + regs->start[dig2],
- regs->end[dig2] - regs->start[dig2]);
- size += regs->end[dig2] - regs->start[dig2];
- }
- else
- result[size++] = *out;
- }
- else
- result[size++] = *out;
+ dbp += len;
+ return TRUE;
}
- result[size] = '\0';
+ return FALSE;
+}
- return result;
+static char *
+get_tag (bp)
+ register char *bp;
+{
+ register char *cp, *name;
+
+ if (*bp == '\0')
+ return NULL;
+ /* Go till you get to white space or a syntactic break */
+ for (cp = bp + 1; !notinname (*cp); cp++)
+ continue;
+ name = savenstr (bp, cp-bp);
+ pfnote (name, TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ return name;
}
-\f
-#endif /* ETAGS_REGEXPS */
+
/* Initialize a linebuffer for use */
-void
-initbuffer (linebuffer)
- struct linebuffer *linebuffer;
+static void
+initbuffer (lbp)
+ linebuffer *lbp;
{
- linebuffer->size = 200;
- linebuffer->buffer = xnew (200, char);
+ lbp->size = (DEBUG) ? 3 : 200;
+ lbp->buffer = xnew (lbp->size, char);
+ lbp->buffer[0] = '\0';
+ lbp->len = 0;
}
/*
- * Read a line of text from `stream' into `linebuffer'.
- * Return the number of characters read from `stream',
- * which is the length of the line including the newline, if any.
+ * Read a line of text from `stream' into `lbp', excluding the
+ * newline or CR-NL, if any. Return the number of characters read from
+ * `stream', which is the length of the line including the newline.
+ *
+ * On DOS or Windows we do not count the CR character, if any, before the
+ * NL, in the returned length; this mirrors the behavior of emacs on those
+ * platforms (for text files, it translates CR-NL to NL as it reads in the
+ * file).
*/
-long
-readline_internal (linebuffer, stream)
- struct linebuffer *linebuffer;
+static long
+readline_internal (lbp, stream)
+ linebuffer *lbp;
register FILE *stream;
{
- char *buffer = linebuffer->buffer;
- register char *p = linebuffer->buffer;
+ char *buffer = lbp->buffer;
+ register char *p = lbp->buffer;
register char *pend;
int chars_deleted;
- pend = p + linebuffer->size; /* Separate to avoid 386/IX compiler bug. */
+ pend = p + lbp->size; /* Separate to avoid 386/IX compiler bug. */
while (1)
{
register int c = getc (stream);
if (p == pend)
{
- linebuffer->size *= 2;
- buffer = (char *) xrealloc (buffer, linebuffer->size);
- p += buffer - linebuffer->buffer;
- pend = buffer + linebuffer->size;
- linebuffer->buffer = buffer;
+ /* We're at the end of linebuffer: expand it. */
+ lbp->size *= 2;
+ xrnew (buffer, lbp->size, char);
+ p += buffer - lbp->buffer;
+ pend = buffer + lbp->size;
+ lbp->buffer = buffer;
}
if (c == EOF)
{
+ *p = '\0';
chars_deleted = 0;
break;
}
{
if (p > buffer && p[-1] == '\r')
{
- *--p = '\0';
+ p -= 1;
+#ifdef DOS_NT
+ /* Assume CRLF->LF translation will be performed by Emacs
+ when loading this file, so CRs won't appear in the buffer.
+ It would be cleaner to compensate within Emacs;
+ however, Emacs does not know how many CRs were deleted
+ before any given point in the file. */
+ chars_deleted = 1;
+#else
chars_deleted = 2;
+#endif
}
else
{
- *p = '\0';
chars_deleted = 1;
}
+ *p = '\0';
break;
}
*p++ = c;
}
+ lbp->len = p - buffer;
- return p - buffer + chars_deleted;
+ return lbp->len + chars_deleted;
}
/*
- * Like readline_internal, above, but try to match the input
- * line against any existing regular expressions.
+ * Like readline_internal, above, but in addition try to match the
+ * input line against relevant regular expressions.
*/
-long
-readline (linebuffer, stream)
- struct linebuffer *linebuffer;
+static long
+readline (lbp, stream)
+ linebuffer *lbp;
FILE *stream;
{
/* Read new line. */
- long result = readline_internal (linebuffer, stream);
-#ifdef ETAGS_REGEXPS
- int i;
+ long result = readline_internal (lbp, stream);
- /* Match against all listed patterns. */
- for (i = 0; i < num_patterns; ++i)
+ /* Honour #line directives. */
+ if (!no_line_directive
+ && result > 12 && strneq (lbp->buffer, "#line ", 6))
{
- int match = re_match (patterns[i].pattern, linebuffer->buffer,
- (int)result, 0, &patterns[i].regs);
- switch (match)
+ int start, lno;
+
+ if (sscanf (lbp->buffer, "#line %d \"%n", &lno, &start) == 1)
{
- case -2:
- /* Some error. */
- if (!patterns[i].error_signaled)
- {
- error ("error while matching pattern %d", i);
- patterns[i].error_signaled = TRUE;
- }
- break;
- case -1:
- /* No match. */
- break;
- default:
- /* Match occurred. Construct a tag. */
- if (patterns[i].name_pattern[0] != '\0')
+ char *endp = lbp->buffer + start;
+
+ while ((endp = etags_strchr (endp, '"')) != NULL
+ && endp[-1] == '\\')
+ endp++;
+ if (endp != NULL)
{
- /* Make a named tag. */
- char *name = substitute (linebuffer->buffer,
- patterns[i].name_pattern,
- &patterns[i].regs);
- if (name != NULL)
- pfnote (name, TRUE,
- linebuffer->buffer, match, lineno, linecharno);
+ char *absname, *name = lbp->buffer + start;
+ *endp = '\0';
+
+ canonicalize_filename(name); /* for DOS */
+ absname = absolute_filename (name, curfiledir);
+ if (filename_is_absolute (name)
+ || filename_is_absolute (curfile))
+ name = absname;
+ else
+ {
+ name = relative_filename (absname, tagfiledir);
+ free (absname);
+ }
+
+ if (streq (curtagfname, name))
+ free (name);
+ else
+ curtagfname = name;
+ lineno = lno;
+ nocharno = TRUE; /* do not use char position for tags */
+ return readline (lbp, stream);
}
- else
+ }
+ }
+
+#ifdef ETAGS_REGEXPS
+ {
+ int match;
+ pattern *pp;
+
+ /* Match against relevant patterns. */
+ if (lbp->len > 0)
+ for (pp = p_head; pp != NULL; pp = pp->p_next)
+ {
+ /* Only use generic regexps or those for the current language. */
+ if (pp->lang != NULL && pp->lang != curlang)
+ continue;
+
+ match = re_match (pp->pat, lbp->buffer, lbp->len, 0, &pp->regs);
+ switch (match)
{
- /* Make an unnamed tag. */
- pfnote (NULL, TRUE,
- linebuffer->buffer, match, lineno, linecharno);
+ case -2:
+ /* Some error. */
+ if (!pp->error_signaled)
+ {
+ error ("error while matching \"%s\"", pp->regex);
+ pp->error_signaled = TRUE;
+ }
+ break;
+ case -1:
+ /* No match. */
+ break;
+ default:
+ /* Match occurred. Construct a tag. */
+ if (pp->name_pattern[0] != '\0')
+ {
+ /* Make a named tag. */
+ char *name = substitute (lbp->buffer,
+ pp->name_pattern, &pp->regs);
+ if (name != NULL)
+ pfnote (name, TRUE, lbp->buffer, match, lineno, linecharno);
+ }
+ else
+ {
+ /* Make an unnamed tag. */
+ pfnote ((char *)NULL, TRUE,
+ lbp->buffer, match, lineno, linecharno);
+ }
+ break;
}
- break;
}
- }
+ }
#endif /* ETAGS_REGEXPS */
return result;
}
-/*
- * Read a file, but do no processing. This is used to do regexp
- * matching on files that have no language defined.
- */
-void
-just_read_file (inf)
- FILE *inf;
-{
- while (!feof (inf))
- {
- ++lineno;
- linecharno = charno;
- charno += readline (&lb, inf) + 1;
- }
-}
-
\f
/*
* Return a pointer to a space of size strlen(cp)+1 allocated
* with xnew where the string CP has been copied.
*/
-char *
+static char *
savestr (cp)
char *cp;
{
* Return a pointer to a space of size LEN+1 allocated with xnew where
* the string CP has been copied for at most the first LEN characters.
*/
-char *
+static char *
savenstr (cp, len)
char *cp;
int len;
* Return the ptr in sp at which the character c last
* appears; NULL if not found
*
- * Identical to System V strrchr, included for portability.
+ * Identical to POSIX strrchr, included for portability.
*/
-char *
+static char *
etags_strrchr (sp, c)
- register char *sp, c;
+ register const char *sp;
+ register int c;
{
- register char *r;
+ register const char *r;
r = NULL;
do
if (*sp == c)
r = sp;
} while (*sp++);
- return r;
+ return (char *)r;
}
* Return the ptr in sp at which the character c first
* appears; NULL if not found
*
- * Identical to System V strchr, included for portability.
+ * Identical to POSIX strchr, included for portability.
*/
-char *
+static char *
etags_strchr (sp, c)
- register char *sp, c;
+ register const char *sp;
+ register int c;
{
do
{
if (*sp == c)
- return sp;
+ return (char *)sp;
} while (*sp++);
return NULL;
}
+/* Skip spaces, return new pointer. */
+static char *
+skip_spaces (cp)
+ char *cp;
+{
+ while (iswhite (*cp))
+ cp++;
+ return cp;
+}
+
+/* Skip non spaces, return new pointer. */
+static char *
+skip_non_spaces (cp)
+ char *cp;
+{
+ while (*cp != '\0' && !iswhite (*cp))
+ cp++;
+ return cp;
+}
+
/* Print error message and exit. */
void
fatal (s1, s2)
exit (BAD);
}
-void
+static void
pfatal (s1)
char *s1;
{
exit (BAD);
}
-void
+static void
suggest_asking_for_help ()
{
- fprintf (stderr, "\tTry `%s --help' for a complete list of options.\n",
- progname);
+ fprintf (stderr, "\tTry `%s %s' for a complete list of options.\n",
+ progname,
+#ifdef LONG_OPTIONS
+ "--help"
+#else
+ "-h"
+#endif
+ );
exit (BAD);
}
/* Print error message. `s1' is printf control string, `s2' is arg for it. */
-void
+static void
error (s1, s2)
- char *s1, *s2;
+ const char *s1, *s2;
{
fprintf (stderr, "%s: ", progname);
fprintf (stderr, s1, s2);
/* Return a newly-allocated string whose contents
concatenate those of s1, s2, s3. */
-char *
+static char *
concat (s1, s2, s3)
char *s1, *s2, *s3;
{
return result;
}
+
\f
/* Does the same work as the system V getcwd, but does not need to
guess the buffer size in advance. */
-char *
+static char *
etags_getcwd ()
{
-#ifdef DOS_NT
- char *p, path[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
-
- getwd (path);
- p = path;
- while (*p)
- if (*p == '\\')
- *p++ = '/';
- else
- *p++ = lowcase (*p);
-
- return strdup (path);
-#else /* not DOS_NT */
-#if HAVE_GETCWD
+#ifdef HAVE_GETCWD
int bufsize = 200;
char *path = xnew (bufsize, char);
if (errno != ERANGE)
pfatal ("getcwd");
bufsize *= 2;
+ free (path);
path = xnew (bufsize, char);
}
+ canonicalize_filename (path);
return path;
-#else /* not DOS_NT and not HAVE_GETCWD */
- struct linebuffer path;
+
+#else /* not HAVE_GETCWD */
+#if MSDOS
+
+ char *p, path[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
+
+ getwd (path);
+
+ for (p = path; *p != '\0'; p++)
+ if (*p == '\\')
+ *p = '/';
+ else
+ *p = lowcase (*p);
+
+ return strdup (path);
+#else /* not MSDOS */
+ linebuffer path;
FILE *pipe;
initbuffer (&path);
pclose (pipe);
return path.buffer;
+#endif /* not MSDOS */
#endif /* not HAVE_GETCWD */
-#endif /* not DOS_NT */
}
-/* Return a newly allocated string containing the filename
- of FILE relative to the absolute directory DIR (which
- should end with a slash). */
-char *
+/* Return a newly allocated string containing the file name of FILE
+ relative to the absolute directory DIR (which should end with a slash). */
+static char *
relative_filename (file, dir)
char *file, *dir;
{
- char *fp, *dp, *abs, *res;
+ char *fp, *dp, *afn, *res;
+ int i;
- /* Find the common root of file and dir. */
- abs = absolute_filename (file, cwd);
- fp = abs;
+ /* Find the common root of file and dir (with a trailing slash). */
+ afn = absolute_filename (file, cwd);
+ fp = afn;
dp = dir;
while (*fp++ == *dp++)
continue;
- do
- {
- fp--;
- dp--;
- }
+ fp--, dp--; /* back to the first differing char */
+#ifdef DOS_NT
+ if (fp == afn && afn[0] != '/') /* cannot build a relative name */
+ return afn;
+#endif
+ do /* look at the equal chars until '/' */
+ fp--, dp--;
while (*fp != '/');
- /* Build a sequence of "../" strings for the resulting relative filename. */
- for (dp = etags_strchr (dp + 1, '/'), res = "";
- dp != NULL;
- dp = etags_strchr (dp + 1, '/'))
- {
- res = concat (res, "../", "");
- }
+ /* Build a sequence of "../" strings for the resulting relative file name. */
+ i = 0;
+ while ((dp = etags_strchr (dp + 1, '/')) != NULL)
+ i += 1;
+ res = xnew (3*i + strlen (fp + 1) + 1, char);
+ res[0] = '\0';
+ while (i-- > 0)
+ strcat (res, "../");
- /* Add the filename relative to the common root of file and dir. */
- res = concat (res, fp + 1, "");
- free (abs);
+ /* Add the file name relative to the common root of file and dir. */
+ strcat (res, fp + 1);
+ free (afn);
return res;
}
-/* Return a newly allocated string containing the
- absolute filename of FILE given CWD (which should
- end with a slash). */
-char *
-absolute_filename (file, cwd)
- char *file, *cwd;
+/* Return a newly allocated string containing the absolute file name
+ of FILE given DIR (which should end with a slash). */
+static char *
+absolute_filename (file, dir)
+ char *file, *dir;
{
char *slashp, *cp, *res;
- if (absolutefn (file))
- res = concat (file, "", "");
+ if (filename_is_absolute (file))
+ res = savestr (file);
+#ifdef DOS_NT
+ /* We don't support non-absolute file names with a drive
+ letter, like `d:NAME' (it's too much hassle). */
+ else if (file[1] == ':')
+ fatal ("%s: relative file names with drive letters not supported", file);
+#endif
else
- res = concat (cwd, file, "");
+ res = concat (dir, file, "");
/* Delete the "/dirname/.." and "/." substrings. */
slashp = etags_strchr (res, '/');
cp = slashp;
do
cp--;
- while (cp >= res && *cp != '/');
- if (*cp == '/')
- {
- strcpy (cp, slashp + 3);
- }
- else /* else (cp == res) */
- {
- if (slashp[3] != '\0')
- strcpy (cp, slashp + 4);
- else
- return ".";
- }
+ while (cp >= res && !filename_is_absolute (cp));
+ if (cp < res)
+ cp = slashp; /* the absolute name begins with "/.." */
+#ifdef DOS_NT
+ /* Under MSDOS and NT we get `d:/NAME' as absolute
+ file name, so the luser could say `d:/../NAME'.
+ We silently treat this as `d:/NAME'. */
+ else if (cp[0] != '/')
+ cp = slashp;
+#endif
+ strcpy (cp, slashp + 3);
slashp = cp;
continue;
}
slashp = etags_strchr (slashp + 1, '/');
}
- return res;
+ if (res[0] == '\0')
+ return savestr ("/");
+ else
+ return res;
}
/* Return a newly allocated string containing the absolute
- filename of dir where FILE resides given CWD (which should
+ file name of dir where FILE resides given DIR (which should
end with a slash). */
-char *
-absolute_dirname (file, cwd)
- char *file, *cwd;
+static char *
+absolute_dirname (file, dir)
+ char *file, *dir;
{
char *slashp, *res;
char save;
+ canonicalize_filename (file);
slashp = etags_strrchr (file, '/');
if (slashp == NULL)
- return cwd;
+ return savestr (dir);
save = slashp[1];
slashp[1] = '\0';
- res = absolute_filename (file, cwd);
+ res = absolute_filename (file, dir);
slashp[1] = save;
return res;
}
+/* Whether the argument string is an absolute file name. The argument
+ string must have been canonicalized with canonicalize_filename. */
+static bool
+filename_is_absolute (fn)
+ char *fn;
+{
+ return (fn[0] == '/'
+#ifdef DOS_NT
+ || (ISALPHA(fn[0]) && fn[1] == ':' && fn[2] == '/')
+#endif
+ );
+}
+
+/* Translate backslashes into slashes. Works in place. */
+static void
+canonicalize_filename (fn)
+ register char *fn;
+{
+#ifdef DOS_NT
+ /* Canonicalize drive letter case. */
+ if (fn[0] != '\0' && fn[1] == ':' && ISLOWER (fn[0]))
+ fn[0] = upcase (fn[0]);
+ /* Convert backslashes to slashes. */
+ for (; *fn != '\0'; fn++)
+ if (*fn == '\\')
+ *fn = '/';
+#else
+ /* No action. */
+ fn = NULL; /* shut up the compiler */
+#endif
+}
+
+/* Set the minimum size of a string contained in a linebuffer. */
+static void
+linebuffer_setlen (lbp, toksize)
+ linebuffer *lbp;
+ int toksize;
+{
+ while (lbp->size <= toksize)
+ {
+ lbp->size *= 2;
+ xrnew (lbp->buffer, lbp->size, char);
+ }
+ lbp->len = toksize;
+}
+
/* Like malloc but get fatal error if memory is exhausted. */
-long *
+static PTR
xmalloc (size)
unsigned int size;
{
- long *result = (long *) malloc (size);
+ PTR result = (PTR) malloc (size);
if (result == NULL)
- fatal ("virtual memory exhausted", 0);
+ fatal ("virtual memory exhausted", (char *)NULL);
return result;
}
-long *
+static PTR
xrealloc (ptr, size)
char *ptr;
unsigned int size;
{
- long *result = (long *) realloc (ptr, size);
+ PTR result = (PTR) realloc (ptr, size);
if (result == NULL)
- fatal ("virtual memory exhausted");
+ fatal ("virtual memory exhausted", (char *)NULL);
return result;
}
+
+/*
+ * Local Variables:
+ * c-indentation-style: gnu
+ * indent-tabs-mode: t
+ * tab-width: 8
+ * c-font-lock-extra-types: ("FILE" "bool" "language" "linebuffer")
+ * End:
+ */
HCoop / bpt / emacs.git / blobdiff