/* Tags file maker to go with GNU Emacs
- Copyright (C) 1984, 1987, 1988, 1989, 1993 Free Software Foundation, Inc. and Ken Arnold
+ Copyright (C) 1984, 87, 88, 89, 93, 94, 95
+ Free Software Foundation, Inc. and Ken Arnold
This file is not considered part of GNU Emacs.
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:
* Ctags originally by Ken Arnold.
- * FORTRAN added by Jim Kleckner.
+ * 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.
*
- * Francesco Potorti` (pot@cnuce.cnr.it) is the current maintainer. 10.7
+ * Francesco Potorti` (F.Potorti@cnuce.cnr.it) is the current maintainer.
*/
+char pot_etags_version[] = "@(#) pot revision number is $Revision: 11.84 $";
+
+#define TRUE 1
+#define FALSE 0
+
+#ifndef DEBUG
+# define DEBUG FALSE
+#endif
+
#ifdef MSDOS
-#include <fcntl.h>
+# include <string.h>
+# include <fcntl.h>
+# include <sys/param.h>
#endif /* MSDOS */
+#ifdef WINDOWSNT
+# include <stdlib.h>
+# include <fcntl.h>
+# include <string.h>
+# include <io.h>
+# define MAXPATHLEN _MAX_PATH
+#endif
+
+#if !defined (MSDOS) && !defined (WINDOWSNT) && defined (STDC_HEADERS)
+#include <stdlib.h>
+#include <string.h>
+#endif
+
#ifdef HAVE_CONFIG_H
-#include <../src/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 <stdio.h>
#include <ctype.h>
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
#include <sys/types.h>
#include <sys/stat.h>
# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#endif
-#include "getopt.h"
+#include <getopt.h>
-extern char *getenv ();
-extern char *getcwd ();
-
-char *etags_index (), *etags_rindex ();
-char *savenstr ();
-
-/* Define the symbol ETAGS to make the program "etags",
- which makes emacs-style tag tables by default.
- Define CTAGS to make the program "ctags" compatible with the usual one.
- Define neither one to get behavior that depends
- on the name with which the program is invoked
- (but we don't normally compile it that way). */
-
-#if !defined(ETAGS) && !defined(CTAGS)
-/* If neither is defined, program can be run as either. */
-#define ETAGS
-#define CTAGS
-#endif
+#ifdef ETAGS_REGEXPS
+# include <regex.h>
+#endif /* ETAGS_REGEXPS */
-/* On VMS, CTAGS is not useful, so always do ETAGS. */
-#ifdef VMS
-#ifndef ETAGS
-#define ETAGS
-#endif
+/* Define CTAGS to make the program "ctags" compatible with the usual one.
+ 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
+# define CTAGS TRUE
+#else
+# define CTAGS FALSE
#endif
/* 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
-/*
- * The FILEPOS abstract type, which represents a position in a file,
- * plus the following accessor functions:
- *
- * long GET_CHARNO (pos)
- * returns absolute char number.
- * void SET_FILEPOS (pos, fp, charno)
- * FILE *fp; long charno;
- * sets `pos' from the current file
- * position of `fp' and from `charno',
- * which must be the absolute character
- * number corresponding to the current
- * position of `fp'.
- *
- * The `pos' parameter is an lvalue expression of type FILEPOS.
- * Parameters to the accessor functions are evaluated 0 or more times,
- * and so must have no side effects.
- *
- * FILEPOS objects can also be assigned and passed to and from
- * functions in the normal C manner.
- *
- * Implementation notes: the `+ 0' is to enforce rvalue-ness.
- */
-
-#ifndef DEBUG
- /* real implementation */
-typedef long FILEPOS;
-#define GET_CHARNO(pos) ((pos) + 0)
-#define SET_FILEPOS(pos, fp, cno) ((void) ((pos) = (cno)))
-#else
- /* debugging implementation */
-typedef struct
-{
- long charno;
-} FILEPOS;
-
-#define GET_CHARNO(pos) ((pos).charno + 0)
-#define SET_FILEPOS(pos, fp, cno) \
- ((void) ((pos).charno = (cno), \
- (cno) != ftell (fp) ? (error ("SET_FILEPOS inconsistency"), 0) \
- : 0))
-#endif
+/* C extensions. */
+#define C_PLPL 0x00001 /* C++ */
+#define C_STAR 0x00003 /* C* */
+#define YACC 0x10000 /* yacc file */
-#define streq(s, t) (strcmp (s, t) == 0)
-#define strneq(s, t, n) (strncmp (s, t, n) == 0)
-#define logical int
+#define streq(s,t) ((DEBUG && (s) == NULL && (t) == NULL \
+ && (abort (), 1)) || !strcmp (s, t))
+#define strneq(s,t,n) ((DEBUG && (s) == NULL && (t) == NULL \
+ && (abort (), 1)) || !strncmp (s, t, n))
-#define TRUE 1
-#define FALSE 0
+#define lowcase(c) tolower ((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 */
-#define max(I1,I2) ((I1) > (I2) ? (I1) : (I2))
+#ifdef DOS_NT
+# define absolutefn(fn) (fn[0] == '/' \
+ || (fn[1] == ':' && fn[2] == '/'))
+#else
+# define absolutefn(fn) (fn[0] == '/')
+#endif
+
+
+/*
+ * xnew -- allocate storage
+ *
+ * SYNOPSIS: Type *xnew (int n, Type);
+ */
+#ifdef chkmalloc
+# include "chkmalloc.h"
+# define xnew(n,Type) ((Type *) trace_xmalloc (__FILE__, __LINE__, \
+ (n) * sizeof (Type)))
+#else
+# define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
+#endif
-struct nd_st
-{ /* sorting structure */
+typedef int logical;
+
+typedef struct nd_st
+{ /* sorting structure */
char *name; /* function or type name */
char *file; /* file name */
logical is_func; /* use pattern or line no */
- logical named; /* list name separately */
logical 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 */
-};
-
-long ftell ();
-typedef struct nd_st NODE;
-
-logical header_file; /* TRUE if .h file, FALSE o.w. */
-/* boolean "functions" (see init) */
-logical _wht[0177], _etk[0177], _itk[0177], _btk[0177];
+} NODE;
+extern char *getenv ();
char *concat ();
-char *savenstr ();
-char *savestr ();
-char *xmalloc ();
-char *xrealloc ();
-int L_isdef (), L_isquote ();
-int PF_funcs ();
+char *savenstr (), *savestr ();
+char *etags_strchr (), *etags_strrchr ();
+char *etags_getcwd ();
+char *relative_filename (), *absolute_filename (), *absolute_dirname ();
+void grow_linebuffer ();
+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 Erlang_functions;
+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 Erlang_functions ();
+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
+
+Lang_function *get_language_from_name ();
+Lang_function *get_language_from_interpreter ();
+Lang_function *get_language_from_suffix ();
int total_size_of_entries ();
-logical consider_token ();
-logical tail ();
long readline ();
-void Asm_funcs ();
-void C_entries ();
-void L_funcs ();
-void L_getit ();
-void PAS_funcs ();
-void Scheme_funcs ();
-void TEX_funcs ();
+long readline_internal ();
+#ifdef ETAGS_REGEXPS
+void add_regex ();
+#endif
void add_node ();
void error ();
-void fatal ();
-logical find_entries ();
+void suggest_asking_for_help ();
+void fatal (), pfatal ();
+void find_entries ();
void free_tree ();
void getit ();
void init ();
void initbuffer ();
-void initbuffer ();
void pfnote ();
void process_file ();
void put_entries ();
void takeprec ();
-/*
- * MACRO
- * xnew -- allocate storage
- *
- * SYNOPSIS
- * Type *xnew (int n, Type);
- */
-#define xnew(n, Type) ((Type *) xmalloc ((n) * sizeof (Type)))
-
-/*
- * Symbol table types.
- */
-enum sym_type
-{
- st_none, st_C_struct, st_C_enum, st_C_define, st_C_typedef, st_C_typespec
-};
\f
+char searchar = '/'; /* use /.../ searches */
+int lineno; /* line number of current line */
+long charno; /* current character number */
+long linecharno; /* charno of start of line */
-typedef int LINENO;
+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 */
-typedef struct
-{
- char *p;
- int len;
- LINENO lineno;
- logical named;
-} TOKEN;
+FILE *tagf; /* ioptr for tags file */
+NODE *head; /* the head of the binary tree of tags */
-/* C extensions.
+/*
+ * 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 C_PLPL 0x00001 /* C++ */
-#define C_STAR 0x00003 /* C* */
-#define YACC 0x10000 /* yacc file */
-
-char searchar = '/'; /* use /.../ searches */
+struct linebuffer
+{
+ long size;
+ char *buffer;
+};
-LINENO lineno; /* line number of current line */
-long charno; /* current character number */
+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];
-long linecharno; /* charno of start of line; not used by C, but
- * by every other language.
- */
-
-char *curfile, /* current input file name */
- *outfile, /* output file */
- *white = " \f\t\n", /* white chars */
- *endtk = " \t\n\"'#()[]{}=-+%*/&|^~!<>;,.:?", /* token ending chars */
- /* token starting chars */
- *begtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~",
- /* valid in-token chars */
- *intk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
-
-int append_to_tagfile; /* -a: append to tags */
-int absolute_pathnames; /* -A: use absolute pathnames in tag file */
-int emacs_tags_format; /* emacs style output (no -e option any more) */
-/* The following three default to 1 for etags, but to 0 for ctags. */
-int typedefs; /* -t: create tags for typedefs */
-int typedefs_and_cplusplus; /* -T: create tags for typedefs, level */
+/* boolean "functions" (see init) */
+logical _wht[0177], _etk[0177], _itk[0177], _btk[0177];
+char
+ /* white chars */
+ *white = " \f\t\n\013",
+ /* token ending chars */
+ *endtk = " \t\n\013\"'#()[]{}=-+%*/&|^~!<>;,.:?",
+ /* token starting chars */
+ *begtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
+ /* valid in-token chars */
+ *intk = "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 */
/* 0 struct/enum/union decls, and C++ */
- /* member functions */
-int constantypedefs; /* -d: create tags for C #define and enum */
- /* constants. Default under etags. Enum */
- /* constants not implemented. */
+ /* member functions. */
+logical constantypedefs; /* -d: create tags for C #define and enum */
+ /* constants. */
/* -D: opposite of -d. Default under ctags. */
-int update; /* -u: update tags */
-int vgrind_style; /* -v: create vgrind style index output */
-int no_warnings; /* -w: suppress warnings */
-int cxref_style; /* -x: create cxref style output */
-int cplusplus; /* .[hc] means C++, not C */
-int noindentypedefs; /* -S: ignore indentation in C */
-
-/* Name this program was invoked with. */
-char *progname;
-
-/* The current working directory, used if --absolute-pathnames. */
-char *cwd;
-
-struct option longopts[] = {
+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[] =
+{
{ "append", no_argument, NULL, 'a' },
- { "absolute-pathnames", no_argument, NULL, 'A' },
- { "backward-search", no_argument, NULL, 'B' },
+ { "backward-search", no_argument, NULL, 'B' },
{ "c++", no_argument, NULL, 'C' },
{ "cxref", no_argument, NULL, 'x' },
{ "defines", no_argument, NULL, 'd' },
- { "forward-search", no_argument, NULL, 'F' },
+ { "help", no_argument, NULL, 'h' },
{ "help", no_argument, NULL, 'H' },
- { "ignore-indentation", no_argument, NULL, 'S' },
+ { "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' },
+ { "update", no_argument, NULL, 'u' },
{ "version", no_argument, NULL, 'V' },
- { "vgrind", no_argument, NULL, 'v' },
+ { "vgrind", no_argument, NULL, 'v' },
{ 0 }
};
-FILE *inf, /* ioptr for current input file */
- *outf; /* ioptr for tags file */
+#ifdef ETAGS_REGEXPS
+/* Structure defining a regular expression. Elements are
+ the compiled pattern, and the name string. */
+struct pattern
+{
+ struct re_pattern_buffer *pattern;
+ struct re_registers regs;
+ char *name_pattern;
+ logical error_signaled;
+};
-NODE *head; /* the head of the binary tree of tags */
+/* Number of regexps found. */
+int num_patterns = 0;
-int permit_duplicates = 1; /* Nonzero means allow duplicate tags. */
+/* Array of all regexps. */
+struct pattern *patterns = NULL;
+#endif /* ETAGS_REGEXPS */
-/* 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. */
+/*
+ * Language stuff.
+ */
-struct linebuffer
+/* Non-NULL if language fixed. */
+Lang_function *lang_func = 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
+ };
+
+/* 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 [] =
+ { "c", "h", NULL };
+
+/* .M is for Objective C++ files. */
+char *Cplusplus_suffixes [] =
+ { "C", "H", "c++", "cc", "cpp", "cxx", "h++", "hh", "hpp", "hxx", "M", NULL};
+
+char *Cstar_suffixes [] =
+ { "cs", "hs", NULL };
+
+char *Erlang_suffixes [] =
+ { "erl", "hrl", NULL };
+
+char *Fortran_suffixes [] =
+ { "F", "f", "f90", "for", NULL };
+
+char *Lisp_suffixes [] =
+ { "cl", "clisp", "el", "l", "lisp", "lsp", "ml", NULL };
+
+char *Pascal_suffixes [] =
+ { "p", "pas", NULL };
+
+char *Perl_suffixes [] =
+ { "pl", "pm", NULL };
+char *Perl_interpreters [] =
+ { "perl", "@PERL@", NULL };
+
+char *plain_C_suffixes [] =
+ { "pc", /* Pro*C file */
+ "m", /* Objective C file */
+ "lm", /* Objective lex file */
+ NULL };
+
+char *Prolog_suffixes [] =
+ { "prolog", 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 };
+
+char *TeX_suffixes [] =
+ { "TeX", "bib", "clo", "cls", "ltx", "sty", "tex", NULL };
+
+char *Yacc_suffixes [] =
+ { "y", "ym", NULL }; /* .ym is Objective yacc file */
+
+/* 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
{
- long size;
- char *buffer;
+ char *name;
+ Lang_function *function;
+ char **suffixes;
+ char **interpreters;
};
-struct linebuffer lb; /* the current line */
-struct linebuffer filename_lb; /* used to read in filenames */
-struct
+struct lang_entry lang_names [] =
{
- FILEPOS linepos;
- struct linebuffer lb; /* used by C_entries instead of lb */
-} lbs[2];
+ { "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 },
+ { "erlang", Erlang_functions, Erlang_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 },
+ { "auto", NULL }, /* default guessing scheme */
+ { "none", just_read_file }, /* regexp matching only */
+ { NULL, NULL } /* end of list */
+};
+
\f
void
-print_version ()
+print_language_names ()
{
-#ifdef CTAGS
- printf ("CTAGS ");
-#ifdef ETAGS
- printf ("and ");
-#endif
-#endif
-#ifdef ETAGS
- printf ("ETAGS ");
+ struct lang_entry *lang;
+ char **ext;
+
+ puts ("\nThese are the currently supported languages, along with the\n\
+default file name suffixes:");
+ for (lang = lang_names; lang->name != NULL; lang++)
+ {
+ printf ("\t%s\t", lang->name);
+ if (lang->suffixes != NULL)
+ for (ext = lang->suffixes; *ext != NULL; ext++)
+ printf (" .%s", *ext);
+ puts ("");
+ }
+ puts ("Where `auto' means use default language for files based on file\n\
+name suffix, and `none' means only do regexp processing on files.\n\
+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.");
+}
+
+#ifndef VERSION
+# define VERSION "19"
#endif
- printf ("for Emacs version 19.\n");
+void
+print_version ()
+{
+ printf ("%s (GNU Emacs %s)\n", (CTAGS) ? "ctags" : "etags", VERSION);
+ puts ("Copyright (C) 1996 Free Software Foundation, Inc. and Ken Arnold");
+ puts ("This program is distributed under the same terms as Emacs");
exit (GOOD);
}
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 file\n\
-names from stdin.\n\n", progname);
+abbreviations for the long option names. A - as file name means read\n\
+names from stdin.", progname);
+ if (!CTAGS)
+ printf (" Absolute names are stored in the output file as they\n\
+are. 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 ("-A, --absolute-pathnames\n\
- Use absolute pathnames for tagged files.");
-#ifdef CTAGS
- puts ("-B, --backward-search\n\
+ if (CTAGS)
+ puts ("-B, --backward-search\n\
Write the search commands for the tag entries using '?', the\n\
- backward-search command.");
-#endif
+ backward-search command instead of '/', the forward-search command.");
puts ("-C, --c++\n\
- Treat files with `.c' and `.h' extensions as C++ code, not C\n\
- code. Files with `.C', `.H', `.cxx', `.hxx', or `.cc'\n\
- extensions are always assumed to be C++ code.");
-
-#ifdef ETAGS
- puts ("-d, --defines\n\
- Create tag entries for #defines, too. This is the default\n\
- behavior.");
-#else
- puts ("-d, --defines\n\
- Create tag entries for #defines, too.");
-#endif
-
-#ifdef CTAGS
- puts ("-D, --no-defines\n\
- Don't create tag entries for #defines. This is the default\n\
- behavior.");
-#else
- puts ("-D, --no-defines\n\
- Don't create tag entries for #defines.");
-#endif
-
-#ifdef CTAGS
- puts ("-F, --forward-search\n\
- Write the search commands for the tag entries using '/', the\n\
- forward-search command.");
-#endif
+ Treat files whose name suffix defaults to C language as C++ files.");
+ if (CTAGS)
+ puts ("-d, --defines\n\
+ Create tag entries for C #define constants and enum constants, too.");
+ else
+ puts ("-D, --no-defines\n\
+ Don't create tag entries for C #define constants and enum constants.\n\
+ This makes the tags file smaller.");
-#ifdef ETAGS
- puts ("-i FILE, --include=FILE\n\
+ if (!CTAGS)
+ {
+ puts ("-i FILE, --include=FILE\n\
Include a note in tag file indicating that, when searching for\n\
a tag, one should also consult the tags file FILE after\n\
checking the current file.");
-#endif
+ puts ("-l LANG, --language=LANG\n\
+ Force the following files to be considered as written in the\n\
+ named language up to the next --language=LANG option.");
+ }
+#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, --no-regex\n\
+ Don't create tags from regexps for the following files.");
+#endif /* ETAGS_REGEXPS */
puts ("-o FILE, --output=FILE\n\
Write the tags to FILE.");
- puts ("-S, --ignore-indentation\n\
+ puts ("-I, --ignore-indentation\n\
Don't rely on indentation quite as much as normal. Currently,\n\
this means not to assume that a closing brace in the first\n\
column is the final brace of a function or structure\n\
- definition.");
- puts ("-t, --typedefs\n\
- Generate tag entries for typedefs. This is the default\n\
- behavior.");
- puts ("-T, --typedefs-and-c++\n\
- Generate tag entries for typedefs, struct/enum/union tags, and\n\
- C++ member functions.");
+ definition in C and C++.");
-#ifdef CTAGS
- puts ("-u, --update\n\
+ if (CTAGS)
+ {
+ puts ("-t, --typedefs\n\
+ Generate tag entries for C typedefs.");
+ puts ("-T, --typedefs-and-c++\n\
+ Generate tag entries for C typedefs, C struct/enum/union tags,\n\
+ and C++ member functions.");
+ puts ("-u, --update\n\
Update the tag entries for the given files, leaving tag\n\
entries for other files in place. Currently, this is\n\
implemented by deleting the existing entries for the given\n\
files and then rewriting the new entries at the end of the\n\
tags file. It is often faster to simply rebuild the entire\n\
tag file than to use this.");
- puts ("-v, --vgrind\n\
+ puts ("-v, --vgrind\n\
Generates an index of items intended for human consumption,\n\
similar to the output of vgrind. The index is sorted, and\n\
gives the page number of each item.");
- puts ("-x, --cxref\n\
+ puts ("-w, --no-warn\n\
+ Suppress warning messages about entries defined in multiple\n\
+ files.");
+ puts ("-x, --cxref\n\
Like --vgrind, but in the style of cxref, rather than vgrind.\n\
The output uses line numbers instead of page numbers, but\n\
beyond that the differences are cosmetic; try both to see\n\
which you like.");
- puts ("-w, --no-warn\n\
- Suppress warning messages about entries defined in multiple\n\
- files.");
-#endif
+ }
puts ("-V, --version\n\
Print the version of the program.\n\
--H, --help\n\
+-h, --help\n\
Print this help message.");
+ print_language_names ();
+
+ puts ("");
+ puts ("Report bugs to bug-gnu-emacs@prep.ai.mit.edu");
+
exit (GOOD);
}
\f
-void
+enum argument_type
+{
+ at_language,
+ at_regexp,
+ at_filename
+};
+
+/* This structure helps us allow mixing of --lang and file names. */
+typedef struct
+{
+ enum argument_type arg_type;
+ char *what;
+ Lang_function *function;
+} argument;
+
+#ifdef VMS /* VMS specific functions */
+
+#define EOS '\0'
+
+/* This is a BUG! ANY arbitrary limit is a BUG!
+ Won't someone please fix this? */
+#define MAX_FILE_SPEC_LEN 255
+typedef struct {
+ short curlen;
+ char body[MAX_FILE_SPEC_LEN + 1];
+} vspec;
+
+/*
+ v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
+ 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
+ is returned, the function ignores the value of in_spec, and will
+ only start processing a new spec with the following call.
+ If an error occurs, on return out_spec contains the value
+ of in_spec when the error occurred.
+
+ 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
+fn_exp (out, in)
+ vspec *out;
+ char *in;
+{
+ static long context = 0;
+ static struct dsc$descriptor_s o;
+ static struct dsc$descriptor_s i;
+ static logical pass1 = TRUE;
+ long status;
+ short retval;
+
+ if (pass1)
+ {
+ pass1 = FALSE;
+ o.dsc$a_pointer = (char *) out;
+ o.dsc$w_length = (short)OUTSIZE;
+ i.dsc$a_pointer = in;
+ i.dsc$w_length = (short)strlen(in);
+ i.dsc$b_dtype = DSC$K_DTYPE_T;
+ i.dsc$b_class = DSC$K_CLASS_S;
+ o.dsc$b_dtype = DSC$K_DTYPE_VT;
+ o.dsc$b_class = DSC$K_CLASS_VS;
+ }
+ if ((status = lib$find_file(&i, &o, &context, 0, 0)) == RMS$_NORMAL)
+ {
+ out->body[out->curlen] = EOS;
+ return 1;
+ }
+ else if (status == RMS$_NMF)
+ retval = 0;
+ else
+ {
+ strcpy(out->body, in);
+ retval = -1;
+ }
+ lib$find_file_end(&context);
+ pass1 = TRUE;
+ return 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 *
+gfnames (arg, p_error)
+ char *arg;
+ logical *p_error;
+{
+ static vspec filename = {MAX_FILE_SPEC_LEN, "\0"};
+
+ switch (fn_exp (&filename, arg))
+ {
+ case 1:
+ *p_error = FALSE;
+ return filename.body;
+ case 0:
+ *p_error = FALSE;
+ return NULL;
+ default:
+ *p_error = TRUE;
+ return filename.body;
+ }
+}
+
+#ifndef OLD /* Newer versions of VMS do provide `system'. */
+system (cmd)
+ char *cmd;
+{
+ error ("%s", "system() function not implemented under VMS");
+}
+#endif
+
+#define VERSION_DELIM ';'
+char *massage_name (s)
+ char *s;
+{
+ char *start = s;
+
+ for ( ; *s; s++)
+ if (*s == VERSION_DELIM)
+ {
+ *s = EOS;
+ break;
+ }
+ else
+ *s = lowcase (*s);
+ return start;
+}
+#endif /* VMS */
+
+\f
+int
main (argc, argv)
int argc;
char *argv[];
{
- char cmd[100];
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, file_count;
+ struct linebuffer filename_lb;
#ifdef VMS
- char got_err;
-
- extern char *gfnames ();
- extern char *massage_name ();
+ logical got_err;
#endif
-#ifdef MSDOS
+#ifdef DOS_NT
_fmode = O_BINARY; /* all of files are treated as binary files */
-#endif /* MSDOS */
+#endif /* DOS_NT */
progname = argv[0];
+ nincluded_files = 0;
+ included_files = xnew (argc, char *);
+ current_arg = 0;
+ file_count = 0;
-#ifndef CTAGS
- emacs_tags_format = 1;
-#else
- emacs_tags_format = 0;
-#endif
+ /* Allocate enough no matter what happens. Overkill, but each one
+ is small. */
+ argbuffer = xnew (argc, argument);
+
+#ifdef ETAGS_REGEXPS
+ /* Set syntax for regular expression routines. */
+ re_set_syntax (RE_SYNTAX_EMACS);
+#endif /* ETAGS_REGEXPS */
/*
* If etags, always find typedefs and structure tags. Why not?
- * Also default is to find macro constants.
+ * Also default is to find macro constants and enum constants.
*/
- if (emacs_tags_format)
- typedefs = typedefs_and_cplusplus = constantypedefs = 1;
+ if (!CTAGS)
+ typedefs = typedefs_and_cplusplus = constantypedefs = TRUE;
- for (;;)
+ while (1)
{
- int opt;
- opt = getopt_long (argc, argv, "aACdDo:f:StTi:BFuvxwVH", longopts, 0);
+ int opt = getopt_long (argc, argv,
+ "-aCdDf:Il:o:r:RStTi:BuvxwVhH", longopts, 0);
if (opt == EOF)
break;
switch (opt)
{
- case '\0':
- /* If getopt returns '\0', then it has already processed a
+ case 0:
+ /* If getopt returns 0, then it has already processed a
long-named option. We should do nothing. */
break;
+ case 1:
+ /* 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;
+ ++file_count;
+ break;
+
/* Common options. */
case 'a':
- append_to_tagfile++;
- break;
- case 'A':
- absolute_pathnames++;
+ append_to_tagfile = TRUE;
break;
case 'C':
- cplusplus = 1;
+ cplusplus = TRUE;
break;
case 'd':
- constantypedefs = 1;
+ constantypedefs = TRUE;
break;
case 'D':
- constantypedefs = 0;
+ constantypedefs = FALSE;
break;
- case 'f':
+ case 'f': /* for compatibility with old makefiles */
case 'o':
- if (outfile)
+ if (tagfile)
{
- fprintf (stderr,
- "%s: -%c flag may only be given once\n", progname, opt);
- goto usage;
+ error ("-%c option may only be given once.", opt);
+ suggest_asking_for_help ();
}
- outfile = optarg;
+ tagfile = optarg;
break;
- case 'S':
- noindentypedefs++;
+ case 'I':
+ case 'S': /* for backward compatibility */
+ noindentypedefs = TRUE;
break;
- case 't':
- typedefs++;
+ case 'l':
+ argbuffer[current_arg].function = get_language_from_name (optarg);
+ argbuffer[current_arg].arg_type = at_language;
+ ++current_arg;
break;
- case 'T':
- typedefs++;
- typedefs_and_cplusplus++;
+#ifdef ETAGS_REGEXPS
+ case 'r':
+ argbuffer[current_arg].arg_type = at_regexp;
+ argbuffer[current_arg].what = optarg;
+ ++current_arg;
+ break;
+ case 'R':
+ argbuffer[current_arg].arg_type = at_regexp;
+ argbuffer[current_arg].what = NULL;
+ ++current_arg;
break;
+#endif /* ETAGS_REGEXPS */
case 'V':
print_version ();
break;
+ case 'h':
case 'H':
print_help ();
break;
-
+ case 't':
+ typedefs = TRUE;
+ break;
+ case 'T':
+ typedefs = typedefs_and_cplusplus = TRUE;
+ break;
+#if (!CTAGS)
/* Etags options */
case 'i':
- if (!emacs_tags_format)
- goto usage;
included_files[nincluded_files++] = optarg;
break;
-
+#else /* CTAGS */
/* Ctags options. */
case 'B':
searchar = '?';
- if (emacs_tags_format)
- goto usage;
- break;
- case 'F':
- searchar = '/';
- if (emacs_tags_format)
- goto usage;
break;
case 'u':
- update++;
- if (emacs_tags_format)
- goto usage;
+ update = TRUE;
break;
case 'v':
- vgrind_style++;
+ vgrind_style = TRUE;
/*FALLTHRU*/
case 'x':
- cxref_style++;
- if (emacs_tags_format)
- goto usage;
+ cxref_style = TRUE;
break;
case 'w':
- no_warnings++;
- if (emacs_tags_format)
- goto usage;
+ no_warnings = TRUE;
break;
-
+#endif /* CTAGS */
default:
- goto usage;
+ suggest_asking_for_help ();
}
}
- if (optind == argc && nincluded_files == 0)
+ for (; optind < argc; ++optind)
{
- fprintf (stderr, "%s: No input files specified.\n", progname);
-
- usage:
- fprintf (stderr, "%s: Try `%s --help' for a complete list of options.\n",
- progname, progname);
- exit (BAD);
+ argbuffer[current_arg].arg_type = at_filename;
+ argbuffer[current_arg].what = argv[optind];
+ ++current_arg;
+ ++file_count;
}
- if (outfile == 0)
+ if (nincluded_files == 0 && file_count == 0)
{
- outfile = emacs_tags_format ? "TAGS" : "tags";
+ error ("%s", "No input files specified.");
+ suggest_asking_for_help ();
}
- init (); /* set up boolean "functions" */
+ if (tagfile == NULL)
+ tagfile = CTAGS ? "tags" : "TAGS";
+ cwd = etags_getcwd (); /* the current working directory */
+ if (cwd[strlen (cwd) - 1] != '/')
+ cwd = concat (cwd, "/", "");
+ if (streq (tagfile, "-"))
+ tagfiledir = cwd;
+ else
+ 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);
- /*
- * loop through files finding functions
- */
- if (emacs_tags_format)
- {
- if (streq (outfile, "-"))
- outf = stdout;
- else
- outf = fopen (outfile, append_to_tagfile ? "a" : "w");
- if (outf == NULL)
- {
- perror (outfile);
- exit (BAD);
- }
- }
-#ifdef VMS
- argc -= optind;
- argv += optind;
- while (gfnames (&argc, &argv, &got_err) != NULL)
+ if (!CTAGS)
{
- if (got_err)
+ if (streq (tagfile, "-"))
{
- error ("Can't find file %s\n", this_file);
- argc--, argv++;
+ 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
- {
- this_file = massage_name (this_file);
-#if 0
- }
- } /* solely to balance out the ifdef'd parens above */
-#endif
-#else
- if (absolute_pathnames)
- {
- cwd = getcwd (NULL, 2*BUFSIZ);
- if (cwd == NULL)
- {
- perror ("pwd");
- exit (BAD);
- }
- strcat (cwd, "/");
+ tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
+ if (tagf == NULL)
+ pfatal (tagfile);
}
- for (; optind < argc; optind++)
+
+ /*
+ * Loop through files finding functions.
+ */
+ for (i = 0; i < current_arg; ++i)
{
- this_file = argv[optind];
+ switch (argbuffer[i].arg_type)
+ {
+ case at_language:
+ lang_func = argbuffer[i].function;
+ break;
+#ifdef ETAGS_REGEXPS
+ case at_regexp:
+ add_regex (argbuffer[i].what);
+ break;
#endif
- /* Input file named "-" means read file names from stdin and use them. */
- if (streq (this_file, "-"))
+ case at_filename:
+#ifdef VMS
+ while ((this_file = gfnames (argbuffer[i].what, &got_err)) != NULL)
{
- while (!feof (stdin))
+ if (got_err)
+ {
+ error ("Can't find file %s\n", this_file);
+ argc--, argv++;
+ }
+ else
{
- (void) readline (&filename_lb, stdin);
- if (strlen (filename_lb.buffer) > 0)
- process_file (filename_lb.buffer);
+ this_file = massage_name (this_file);
}
+#else
+ this_file = argbuffer[i].what;
+#endif
+ /* Input file named "-" means read file names from stdin
+ and use them. */
+ if (streq (this_file, "-"))
+ while (readline_internal (&filename_lb, stdin) > 0)
+ process_file (filename_lb.buffer);
+ else
+ process_file (this_file);
+#ifdef VMS
}
- else
- process_file (this_file);
+#endif
+ break;
}
+ }
- if (emacs_tags_format)
+ if (!CTAGS)
{
while (nincluded_files-- > 0)
- fprintf (outf, "\f\n%s,include\n", *included_files++);
+ fprintf (tagf, "\f\n%s,include\n", *included_files++);
- (void) fclose (outf);
+ fclose (tagf);
exit (GOOD);
}
+ /* 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)
{
put_entries (head);
exit (GOOD);
}
+
if (update)
{
- /* update cannot be set under VMS, so we may assume that argc
- and argv have not been munged. */
- for (i = optind; i < argc; i++)
+ char cmd[BUFSIZ];
+ for (i = 0; i < current_arg; ++i)
{
+ if (argbuffer[i].arg_type != at_filename)
+ continue;
sprintf (cmd,
"mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
- outfile, argv[i], outfile);
- (void) system (cmd);
+ tagfile, argbuffer[i].what, tagfile);
+ if (system (cmd) != GOOD)
+ fatal ("failed to execute shell command", (char *)NULL);
}
- append_to_tagfile++;
- }
- outf = fopen (outfile, append_to_tagfile ? "a" : "w");
- if (outf == NULL)
- {
- perror (outfile);
- exit (GOOD);
+ append_to_tagfile = TRUE;
}
+
+ tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
+ if (tagf == NULL)
+ pfatal (tagfile);
put_entries (head);
- (void) fclose (outf);
+ fclose (tagf);
+
if (update)
{
- sprintf (cmd, "sort %s -o %s", outfile, outfile);
- (void) system (cmd);
+ char cmd[BUFSIZ];
+ sprintf (cmd, "sort %s -o %s", tagfile, tagfile);
+ exit (system (cmd));
}
- exit (GOOD);
+ return GOOD;
+}
+
+
+/*
+ * Return a Lang_function given the name.
+ */
+Lang_function *
+get_language_from_name (name)
+ char *name;
+{
+ struct lang_entry *lang;
+
+ if (name != NULL)
+ for (lang = lang_names; lang->name != NULL; lang++)
+ {
+ if (streq (name, lang->name))
+ return lang->function;
+ }
+
+ error ("language \"%s\" not recognized.", 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 Lang_function given the interpreter name.
+ */
+Lang_function *
+get_language_from_interpreter (interpreter)
+ char *interpreter;
+{
+ struct lang_entry *lang;
+ char **iname;
+
+ if (interpreter == NULL)
+ return NULL;
+ for (lang = lang_names; lang->name != NULL; lang++)
+ if (lang->interpreters != NULL)
+ for (iname = lang->interpreters; *iname != NULL; iname++)
+ if (streq (*iname, interpreter))
+ return lang->function;
+
+ return NULL;
+}
+
+
+
+/*
+ * Return a Lang_function given the file suffix.
+ */
+Lang_function *
+get_language_from_suffix (suffix)
+ char *suffix;
+{
+ struct lang_entry *lang;
+ char **ext;
+
+ if (suffix == NULL)
+ return NULL;
+ 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 NULL;
}
char *file;
{
struct stat stat_buf;
+ FILE *inf;
+#ifdef DOS_NT
+ char *p;
+
+ for (p = file; *p != '\0'; p++)
+ if (*p == '\\')
+ *p = '/';
+#endif
if (stat (file, &stat_buf) == 0 && !S_ISREG (stat_buf.st_mode))
{
- fprintf (stderr, "Skipping %s: it is not a regular file.\n", file);
+ error ("Skipping %s: it is not a regular file.", file);
return;
}
- if (streq (file, outfile) && !streq (outfile, "-"))
+ if (streq (file, tagfile) && !streq (tagfile, "-"))
{
- fprintf (stderr, "Skipping inclusion of %s in self.\n", file);
+ error ("Skipping inclusion of %s in self.", file);
return;
}
- if (!find_entries (file))
+ inf = fopen (file, "r");
+ if (inf == NULL)
{
+ perror (file);
return;
}
- if (emacs_tags_format)
+
+ find_entries (file, inf);
+
+ if (!CTAGS)
{
- fprintf (outf, "\f\n%s%s,%d\n",
- ((absolute_pathnames && file[0] != '/') ? cwd : ""),
- file, total_size_of_entries (head));
+ char *filename;
+
+ if (absolutefn (file))
+ {
+ /* file is an absolute file name. Canonicalise it. */
+ filename = absolute_filename (file, cwd);
+ }
+ else
+ {
+ /* file is a file name relative to cwd. Make it relative
+ to the directory of the tags file. */
+ filename = relative_filename (file, tagfiledir);
+ }
+ fprintf (tagf, "\f\n%s,%d\n", filename, total_size_of_entries (head));
+ free (filename);
put_entries (head);
free_tree (head);
head = NULL;
* This routine opens the specified file and calls the function
* which finds the function and type definitions.
*/
-logical
-find_entries (file)
+void
+find_entries (file, inf)
char *file;
+ FILE *inf;
{
char *cp;
- void prolog_funcs ();
+ Lang_function *function;
+ NODE *old_last_node;
+ extern NODE *last_node;
- inf = fopen (file, "r");
- if (inf == NULL)
- {
- perror (file);
- return FALSE;
- }
+
+ /* 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);
- cp = etags_rindex (file, '.');
-
- header_file = (cp && (streq (cp + 1, "h")));
-
- /* .tex, .aux or .bbl implies LaTeX source code */
- if (cp && (streq (cp + 1, "tex") || streq (cp + 1, "aux")
- || streq (cp + 1, "bbl")))
- {
- TEX_funcs (inf);
- goto close_and_return;
- }
- /* .l or .el or .lisp (or .cl or .clisp or ...) implies lisp source code */
- if (cp && (streq (cp + 1, "l")
- || streq (cp + 1, "el")
- || streq (cp + 1, "lsp")
- || streq (cp + 1, "lisp")
- || streq (cp + 1, "cl")
- || streq (cp + 1, "clisp")))
- {
- L_funcs (inf);
- goto close_and_return;
- }
- /* .scm or .sm or .scheme or ... implies scheme source code */
- if (cp && (streq (cp + 1, "sm")
- || streq (cp + 1, "scm")
- || streq (cp + 1, "scheme")
- || streq (cp + 1, "t")
- || streq (cp + 1, "sch")
- || streq (cp + 1, "SM")
- || streq (cp + 1, "SCM")
- /* The `SCM' or `scm' prefix with a version number */
- || (cp[-1] == 'm' && cp[-2] == 'c' && cp[-3] == 's'
- && string_numeric_p (cp + 1))
- || (cp[-1] == 'M' && cp[-2] == 'C' && cp[-3] == 'S'
- && string_numeric_p (cp + 1))))
- {
- Scheme_funcs (inf);
- goto close_and_return;
- }
- /* Assume that ".s" or ".a" is assembly code. -wolfgang.
- Or even ".sa". */
- if (cp && (streq (cp + 1, "s")
- || streq (cp + 1, "a")
- || streq (cp + 1, "sa")))
- {
- Asm_funcs (inf);
- goto close_and_return;
- }
- /* .C or .H or .cxx or .hxx or .cc: a C++ file */
- if (cp && (streq (cp + 1, "C")
- || streq (cp + 1, "H")
- || streq (cp + 1, "cxx")
- || streq (cp + 1, "hxx")
- || streq (cp + 1, "cc")))
- {
- C_entries (C_PLPL); /* C++ */
- goto close_and_return;
- }
- /* .cs or .hs: a C* file */
- if (cp && (streq (cp + 1, "cs")
- || streq (cp + 1, "hs")))
- {
- C_entries (C_STAR);
- goto close_and_return;
- }
- /* .y: a yacc file */
- if (cp && (streq (cp + 1, "y")))
- {
- C_entries (YACC);
- goto close_and_return;
- }
- /* .pl implies prolog source code */
- if (cp && streq (cp + 1, "pl"))
- {
- prolog_funcs (inf);
- goto close_and_return;
- }
- /* .p or .pas: a Pascal file */
- if (cp && (streq (cp + 1, "p")
- || streq (cp + 1, "pas")))
+
+ /* If user specified a language, use it. */
+ function = lang_func;
+ if (function != NULL)
{
- PAS_funcs (inf);
- goto close_and_return;
+ function (inf);
+ fclose (inf);
+ return;
}
- /* If .f or .for, assume it is fortran or nothing. */
- if (cp && (streq (cp + 1, "f")
- || streq (cp + 1, "for")))
+
+ cp = etags_strrchr (file, '.');
+ if (cp != NULL)
{
- (void) PF_funcs (inf);
- goto close_and_return;
+ cp += 1;
+ function = get_language_from_suffix (cp);
+ if (function != NULL)
+ {
+ function (inf);
+ fclose (inf);
+ return;
+ }
}
- /* if not a .c or .h or .y file, try fortran */
- if (cp && ((cp[1] != 'c'
- && cp[1] != 'h'
- && cp[1] != 'y')
- || (cp[1] != 0 && cp[2] != 0)))
+
+ /* Look for sharp-bang as the first two characters. */
+ if (readline_internal (&lb, inf) > 2
+ && lb.buffer[0] == '#'
+ && lb.buffer[1] == '!')
{
- if (PF_funcs (inf) != 0)
- goto close_and_return;
- rewind (inf); /* no fortran tags found, try C */
- }
- C_entries (cplusplus ? C_PLPL : 0);
+ char *lp;
+
+ /* Set lp to point at the first char after the last slash in the
+ line or, if no slashes, at the first nonblank. Then set cp to
+ the first successive blank and terminate the string. */
+ lp = etags_strrchr (lb.buffer+2, '/');
+ 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;
+ *cp = '\0';
-close_and_return:
- (void) fclose (inf);
- return TRUE;
-}
+ if (strlen (lp) > 0)
+ {
+ function = get_language_from_interpreter (lp);
+ if (function != NULL)
+ {
+ function (inf);
+ fclose (inf);
+ return;
+ }
+ }
+ }
+ rewind (inf);
-/* Nonzero if string STR is composed of digits. */
+ /* Try Fortran. */
+ old_last_node = last_node;
+ Fortran_functions (inf);
-int
-string_numeric_p (str)
- char *str;
-{
- while (*str)
+ /* No Fortran entries found. Try C. */
+ if (old_last_node == last_node)
{
- if (*str < '0' || *str > '9')
- return 0;
+ rewind (inf);
+ default_C_entries (inf);
}
- return 1;
+ fclose (inf);
+ return;
}
\f
/* Record a tag. */
-/* Should take a TOKEN* instead!! */
void
-pfnote (name, is_func, named, linestart, linelen, lno, cno)
- char *name; /* tag name */
- logical is_func; /* function or type name? */
- logical named; /* tag different from text of definition? */
- char *linestart;
- int linelen;
- int lno;
- long cno;
-{
- register char *fp;
+pfnote (name, is_func, linestart, linelen, lno, cno)
+ char *name; /* tag name, or NULL if unnamed */
+ logical 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;
- char tem[51];
- char c;
+
+ if (CTAGS && name == NULL)
+ return;
np = xnew (1, NODE);
- if (np == NULL)
- {
- if (!emacs_tags_format)
- {
- /* It's okay to output early in etags -- it only disrupts the
- * character count of the tag entries, which is no longer used
- * by tags.el anyway.
- */
- error ("too many entries to sort", 0);
- }
- put_entries (head);
- free_tree (head);
- head = NULL;
- np = xnew (1, NODE);
- }
+
/* If ctags mode, change name "main" to M<thisfilename>. */
- if (!emacs_tags_format && !cxref_style && streq (name, "main"))
+ if (CTAGS && !cxref_style && streq (name, "main"))
{
- fp = etags_rindex (curfile, '/');
- name = concat ("M", fp == 0 ? curfile : fp + 1, "");
- fp = etags_rindex (name, '.');
+ register char *fp = etags_strrchr (curfile, '/');
+ np->name = concat ("M", fp == 0 ? curfile : fp + 1, "");
+ fp = etags_strrchr (np->name, '.');
if (fp && fp[1] != '\0' && fp[2] == '\0')
- *fp = 0;
- named = TRUE;
+ fp[0] = 0;
}
- np->name = savestr (name);
+ else
+ np->name = name;
+ np->been_warned = FALSE;
np->file = curfile;
np->is_func = is_func;
- np->named = named;
np->lno = lno;
- /* UNCOMMENT THE +1 HERE: */
- np->cno = cno /* + 1 */ ; /* our char numbers are 0-base; emacs's are 1-base */
- np->left = np->right = 0;
- if (emacs_tags_format)
- {
- c = linestart[linelen];
- linestart[linelen] = 0;
- }
- else if (cxref_style == 0)
- {
- sprintf (tem, strlen (linestart) < 50 ? "%s$" : "%.50s", linestart);
- linestart = tem;
- }
- np->pat = savestr (linestart);
- if (emacs_tags_format)
+ /* 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)
{
- linestart[linelen] = c;
+ if (strlen (linestart) < 50)
+ np->pat = concat (linestart, "$", "");
+ else
+ np->pat = savenstr (linestart, 50);
}
+ else
+ np->pat = savenstr (linestart, linelen);
add_node (np, &head);
}
{
register NODE *node_right = node->right;
free_tree (node->left);
- free (node->name);
+ if (node->name != NULL)
+ free (node->name);
free (node->pat);
free ((char *) node);
node = node_right;
* add_node is the only function allowed to add nodes, so it can
* maintain state.
*/
-/* Must avoid static vars within functions since some systems
- #define static as nothing. */
-static NODE *last_node = NULL;
-
+NODE *last_node = NULL;
void
add_node (node, cur_node_p)
NODE *node, **cur_node_p;
return;
}
- if (emacs_tags_format)
+ if (!CTAGS)
{
/* Etags Mode */
if (last_node == NULL)
- fatal ("internal error in add_node", 0);
+ fatal ("internal error in add_node", (char *)NULL);
last_node->right = node;
last_node = node;
}
*/
if (!dif)
{
- if (node->file == cur_node->file)
+ if (streq (node->file, cur_node->file))
{
if (!no_warnings)
{
node->file, lineno, node->name);
fprintf (stderr, "Second entry ignored\n");
}
- return;
}
- if (!cur_node->been_warned && !no_warnings)
+ else if (!cur_node->been_warned && !no_warnings)
{
- fprintf (stderr,
- "Duplicate entry in files %s and %s: %s (Warning only)\n",
- node->file, cur_node->file, node->name);
+ fprintf
+ (stderr,
+ "Duplicate entry in files %s and %s: %s (Warning only)\n",
+ node->file, cur_node->file, node->name);
+ cur_node->been_warned = TRUE;
}
- cur_node->been_warned = TRUE;
return;
}
- /* Maybe refuse to add duplicate nodes. */
- if (!permit_duplicates)
- {
- if (streq (node->name, cur_node->name)
- && streq (node->file, cur_node->file))
- return;
- }
-
/* Actually add the node */
add_node (node, dif < 0 ? &cur_node->left : &cur_node->right);
}
/* Output this entry */
- if (emacs_tags_format)
+ if (!CTAGS)
+ {
+ if (node->name != NULL)
+ fprintf (tagf, "%s\177%s\001%d,%d\n",
+ node->pat, node->name, node->lno, node->cno);
+ else
+ fprintf (tagf, "%s\177%d,%d\n",
+ node->pat, node->lno, node->cno);
+ }
+ else
{
- if (node->named)
+ if (node->name == NULL)
+ error ("internal error: NULL name in ctags mode.", (char *)NULL);
+
+ if (cxref_style)
{
- fprintf (outf, "%s\177%s\001%d,%d\n",
- node->pat, node->name,
- node->lno, node->cno);
+ if (vgrind_style)
+ fprintf (stdout, "%s %s %d\n",
+ node->name, node->file, (node->lno + 63) / 64);
+ else
+ fprintf (stdout, "%-16s %3d %-16s %s\n",
+ node->name, node->lno, node->file, node->pat);
}
else
{
- fprintf (outf, "%s\177%d,%d\n",
- node->pat,
- node->lno, node->cno);
- }
- }
- else if (!cxref_style)
- {
- fprintf (outf, "%s\t%s\t",
- node->name, node->file);
+ fprintf (tagf, "%s\t%s\t", node->name, node->file);
- if (node->is_func)
- { /* a function */
- putc (searchar, outf);
- putc ('^', outf);
+ if (node->is_func)
+ { /* a function */
+ putc (searchar, tagf);
+ putc ('^', tagf);
- for (sp = node->pat; *sp; sp++)
- {
- if (*sp == '\\' || *sp == searchar)
- putc ('\\', outf);
- putc (*sp, outf);
+ for (sp = node->pat; *sp; sp++)
+ {
+ if (*sp == '\\' || *sp == searchar)
+ putc ('\\', tagf);
+ putc (*sp, tagf);
+ }
+ putc (searchar, tagf);
}
- putc (searchar, outf);
- }
- else
- { /* a typedef; text pattern inadequate */
- fprintf (outf, "%d", node->lno);
+ else
+ { /* a typedef; text pattern inadequate */
+ fprintf (tagf, "%d", node->lno);
+ }
+ putc ('\n', tagf);
}
- putc ('\n', outf);
}
- else if (vgrind_style)
- fprintf (stdout, "%s %s %d\n",
- node->name, node->file, (node->lno + 63) / 64);
- else
- fprintf (stdout, "%-16s %3d %-16s %s\n",
- node->name, node->lno, node->file, node->pat);
/* Output subentries that follow this one */
put_entries (node->right);
/*
* Return total number of characters that put_entries will output for
- * the nodes in the subtree of the specified node. Works only if emacs_tags_format
- * is set, but called only in that case. This count is irrelevant with
- * the new tags.el, but is still supplied for backward compatibility.
+ * 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)
/* Count this entry */
total += strlen (node->pat) + 1;
total += number_len ((long) node->lno) + 1 + number_len (node->cno) + 1;
- if (node->named)
+ if (node->name != NULL)
total += 1 + strlen (node->name); /* \001name */
}
/*
* 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
+};
/* 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; }
%%
+@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
+namespace, C_PLPL, st_C_struct
domain, C_STAR, st_C_struct
union, 0, st_C_struct
struct, 0, st_C_struct
enum, 0, st_C_enum
typedef, 0, st_C_typedef
define, 0, st_C_define
+bool, C_PLPL, st_C_typespec
long, 0, st_C_typespec
short, 0, st_C_typespec
int, 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
+ENTRY, 0, st_C_gnumacro
+PSEUDO, 0, st_C_gnumacro
+# These are defined inside C functions, so currently they are not met.
+# EXFUN used in glibc, DEFVAR_* in emacs.
+#EXFUN, 0, st_C_gnumacro
+#DEFVAR_, 0, st_C_gnumacro
%]
and replace lines between %< and %> with its output. */
/*%<*/
-/* 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 2.1 (K&R C version) */
+/* 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 MAX_WORD_LENGTH 8
-#define MIN_HASH_VALUE 10
-#define MAX_HASH_VALUE 62
+#define MAX_WORD_LENGTH 15
+#define MIN_HASH_VALUE 34
+#define MAX_HASH_VALUE 121
/*
- 21 keywords
- 53 is the maximum key range
+ 34 keywords
+ 88 is the maximum key range
*/
static int
hash (str, len)
- register char *str;
- register int len;
+ register char *str;
+ register unsigned int len;
{
static unsigned char hash_table[] =
{
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
- 62, 62, 62, 62, 62, 62, 62, 2, 62, 7,
- 6, 9, 15, 30, 62, 24, 62, 62, 1, 24,
- 7, 27, 13, 62, 19, 26, 18, 27, 1, 62,
- 62, 62, 62, 62, 62, 62, 62, 62,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 45, 121, 121, 121, 16, 19,
+ 61, 121, 121, 121, 121, 121, 121, 121, 121, 121,
+ 10, 121, 121, 20, 53, 121, 121, 121, 121, 121,
+ 121, 121, 121, 121, 121, 121, 121, 41, 45, 22,
+ 60, 47, 37, 28, 121, 55, 121, 121, 20, 14,
+ 29, 30, 5, 121, 50, 59, 30, 54, 6, 121,
+ 121, 121, 121, 121, 121, 121, 121, 121,
};
return len + hash_table[str[2]] + hash_table[str[0]];
}
struct C_stab_entry *
-in_word_set (str, len)
+in_word_set (str, len)
register char *str;
- register int len;
+ register unsigned int len;
{
static struct C_stab_entry wordlist[] =
{
{"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
- {"",},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
{"volatile", 0, st_C_typespec},
- {"",},
+ {"PSEUDO", 0, st_C_gnumacro},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
+ {"typedef", 0, st_C_typedef},
+ {"typename", C_PLPL, st_C_typespec},
+ {"",}, {"",}, {"",},
+ {"SYSCALL", 0, st_C_gnumacro},
+ {"",}, {"",}, {"",},
+ {"mutable", C_PLPL, st_C_typespec},
+ {"namespace", C_PLPL, st_C_struct},
{"long", 0, st_C_typespec},
- {"char", 0, st_C_typespec},
- {"class", C_PLPL, st_C_struct},
- {"",}, {"",}, {"",}, {"",},
+ {"",}, {"",},
{"const", 0, st_C_typespec},
+ {"",}, {"",}, {"",},
+ {"explicit", C_PLPL, st_C_typespec},
{"",}, {"",}, {"",}, {"",},
- {"auto", 0, st_C_typespec},
- {"",}, {"",},
- {"define", 0, st_C_define},
- {"",},
{"void", 0, st_C_typespec},
+ {"",},
+ {"char", 0, st_C_typespec},
+ {"class", C_PLPL, st_C_struct},
{"",}, {"",}, {"",},
- {"extern", 0, st_C_typespec},
- {"static", 0, st_C_typespec},
+ {"float", 0, st_C_typespec},
{"",},
- {"domain", C_STAR, st_C_struct},
+ {"@implementation", 0, st_C_objimpl},
+ {"auto", 0, st_C_typespec},
{"",},
- {"typedef", 0, st_C_typedef},
- {"double", 0, st_C_typespec},
- {"enum", 0, st_C_enum},
- {"",}, {"",}, {"",}, {"",},
- {"int", 0, st_C_typespec},
+ {"ENTRY", 0, st_C_gnumacro},
+ {"@end", 0, st_C_objend},
+ {"bool", C_PLPL, st_C_typespec},
+ {"domain", C_STAR, st_C_struct},
{"",},
- {"float", 0, st_C_typespec},
+ {"DEFUN", 0, st_C_gnumacro},
+ {"extern", 0, st_C_typespec},
+ {"@interface", 0, st_C_objprot},
{"",}, {"",}, {"",},
- {"struct", 0, st_C_struct},
+ {"int", 0, st_C_typespec},
{"",}, {"",}, {"",}, {"",},
- {"union", 0, st_C_struct},
- {"",},
+ {"signed", 0, st_C_typespec},
{"short", 0, st_C_typespec},
- {"",}, {"",},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
+ {"define", 0, st_C_define},
+ {"@protocol", 0, st_C_objprot},
+ {"enum", 0, st_C_enum},
+ {"static", 0, st_C_typespec},
+ {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
+ {"union", 0, st_C_struct},
+ {"struct", 0, st_C_struct},
+ {"",}, {"",}, {"",}, {"",},
+ {"double", 0, st_C_typespec},
{"unsigned", 0, st_C_typespec},
- {"signed", 0, st_C_typespec},
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register char *s = wordlist[key].name;
- if (*s == *str && strneq (str + 1, s + 1, len - 1))
+ if (*s == *str && !strncmp (str + 1, s + 1, len - 1))
return &wordlist[key];
}
}
/*%>*/
enum sym_type
-C_symtype(str, len, c_ext)
+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;
* C functions are recognized using a simple finite automaton.
* funcdef is its state variable.
*/
-typedef enum
+enum
{
fnone, /* nothing seen */
ftagseen, /* function-like tag seen */
finlist, /* in parameter list */
flistseen, /* after parameter list */
fignore /* before open brace */
-} FUNCST;
-FUNCST funcdef;
+} funcdef;
- /* typedefs are recognized using a simple finite automaton.
- * typeddef is its state variable.
+ /*
+ * typedefs are recognized using a simple finite automaton.
+ * typdef is its state variable.
*/
-typedef enum
+enum
{
tnone, /* nothing seen */
ttypedseen, /* typedef keyword seen */
tinbody, /* inside typedef body */
- tend /* just before typedef tag */
-} TYPEDST;
-TYPEDST typdef;
+ tend, /* just before typedef tag */
+ tignore /* junk after typedef tag */
+} typdef;
- /* struct tags for C++ are recognized using another simple
- * finite automaton. `structdef' is its state variable.
- * This machinery is only invoked for C++; otherwise structdef
- * should remain snone. However, this machinery can easily be
- * adapted to find structure tags in normal C code.
+ /*
+ * struct-like structures (enum, struct and union) are recognized
+ * using another simple finite automaton. `structdef' is its state
+ * variable.
*/
-typedef enum
+enum
{
snone, /* nothing seen yet */
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*/
-} STRUCTST;
-STRUCTST structdef;
+} structdef;
+
/*
* When structdef is stagseen, scolonseen, or sinbody, structtag is the
- * struct tag, and structtype is the type of the preceding struct-like
+ * struct tag, and structtype is the type of the preceding struct-like
* keyword.
*/
-char structtag[BUFSIZ];
+char *structtag = "<uninited>";
enum sym_type structtype;
+/*
+ * When objdef is different from onone, objtag is the name of the class.
+ */
+char *objtag = "<uninited>";
+
/*
* Yet another little state machine to deal with preprocessor lines.
*/
-typedef enum
+enum
{
dnone, /* nothing seen */
dsharpseen, /* '#' seen as first char on line */
ddefineseen, /* '#' and 'define' seen */
dignorerest /* ignore rest of line */
-} DEFINEST;
-DEFINEST definedef;
+} definedef;
+
+/*
+ * State machine for Objective C protocols and implementations.
+ */
+enum
+{
+ onone, /* nothing seen */
+ oprotocol, /* @interface or @protocol seen */
+ oimplementation, /* @implementations seen */
+ otagseen, /* class name seen */
+ oparenseen, /* parenthesis before category seen */
+ ocatseen, /* category name seen */
+ oinbody, /* in @implementation body */
+ omethodsign, /* in @implementation body, after +/- */
+ omethodtag, /* after method name */
+ omethodcolon, /* after method colon */
+ omethodparm, /* after method parameter */
+ oignore /* wait for @end */
+} objdef;
/*
* Set this to TRUE, and the next token considered is called a function.
- * Used only for GNUmacs's function-defining macros.
+ * Used only for GNU emacs's function-defining macros.
*/
logical next_token_is_func;
logical yacc_rules;
/*
- * C_entries ()
- * This routine finds functions, typedefs, #define's and
- * struct/union/enum definitions in C syntax and adds them
- * to the list.
+ * methodlen is the length of the method name stored in token_name.
*/
+int methodlen;
-#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)
-
-/* Save and restore token state. This is used when preprocessor defines
- are handled, to avoid disturbing active function/typedef/struct states. */
-#define TOKEN_SAVED_P (savetok.lineno > 0)
-#define SAVE_TOKEN (savetok = tok, savetok.p = (char *) tokoff, \
- savetok.len = toklen, strcpy(savenameb, nameb))
-#define RESTORE_TOKEN (tok = savetok, tokoff = (int) tok.p, \
- toklen = tok.len, strcpy(nameb, savenameb), \
- savetok.lineno = 0)
-
-#define CNL_SAVE_DEFINEDEF \
-do { \
- SET_FILEPOS (curlinepos, inf, charno); \
- lineno++; \
- charno += readline (&curlb, inf); \
- lp = curlb.buffer; \
- quotednl = FALSE; \
- newndx = curndx; \
-} while (FALSE)
-
-#define CNL \
-do { \
- CNL_SAVE_DEFINEDEF; \
- if (TOKEN_SAVED_P) \
- RESTORE_TOKEN; \
- definedef = dnone; \
-} while (FALSE)
-
-#define MAKE_TAG_FROM_NEW_LB(isfun) pfnote (nameb, isfun, tok.named, \
- newlb.buffer, tokoff + toklen + 1, tok.lineno, GET_CHARNO (newlinepos))
-#define MAKE_TAG_FROM_OTH_LB(isfun) pfnote (nameb, isfun, tok.named, \
- othlb.buffer, tokoff + toklen + 1, tok.lineno, GET_CHARNO (othlinepos))
+/*
+ * 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, or #define, or an enum constant.
+ *
+ * *IS_FUNC gets TRUE iff the token is a function or #define macro
+ * with args. C_EXT is which language we are looking at.
+ *
+ * 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'.
+ *
+ * Globals
+ * funcdef IN OUT
+ * structdef IN OUT
+ * definedef IN OUT
+ * typdef IN OUT
+ * objdef IN OUT
+ * next_token_is_func IN OUT
+ */
-void
-C_entries (c_ext)
- int c_ext; /* extension of C? */
+logical
+consider_token (str, len, c, c_ext, cblev, parlev, is_func)
+ 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 */
+ int cblev; /* IN: curly brace level */
+ int parlev; /* IN: parenthesis level */
+ logical *is_func; /* OUT: function found */
{
- 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 for funcdef & structdef */
- char nameb[BUFSIZ]; /* latest token name for funcdef & structdef */
- register int tokoff; /* offset in line of start of latest token */
- register int toklen; /* length of latest token */
- int cblev; /* current curly brace level */
- int parlev; /* current parenthesis level */
- logical incomm, inquote, inchar, quotednl, midtoken;
- logical cplpl;
- TOKEN savetok; /* saved token during preprocessor handling */
- char savenameb[BUFSIZ]; /* ouch! */
-
- savetok.lineno = 0;
- curndx = newndx = 0;
- lineno = 0;
- charno = 0;
- lp = curlb.buffer;
- *lp = 0;
-
- definedef = dnone; funcdef = fnone; typdef= tnone; structdef= snone;
- next_token_is_func = yacc_rules = FALSE;
- midtoken = inquote = inchar = incomm = quotednl = FALSE;
- cblev = 0;
- parlev = 0;
- cplpl = c_ext & C_PLPL;
+ enum sym_type toktype = C_symtype (str, len, c_ext);
- while (!feof (inf))
+ /*
+ * Advance the definedef state machine.
+ */
+ switch (definedef)
+ {
+ case dnone:
+ /* We're not on a preprocessor line. */
+ break;
+ case dsharpseen:
+ if (toktype == st_C_define)
+ {
+ definedef = ddefineseen;
+ }
+ else
+ {
+ definedef = dignorerest;
+ }
+ return FALSE;
+ case ddefineseen:
+ /*
+ * Make a tag for any macro, unless it is a constant
+ * and constantypedefs is FALSE.
+ */
+ definedef = dignorerest;
+ *is_func = (c == '(');
+ if (!*is_func && !constantypedefs)
+ return FALSE;
+ else
+ return TRUE;
+ case dignorerest:
+ return FALSE;
+ default:
+ error ("internal error: definedef value.", (char *)NULL);
+ }
+
+ /*
+ * Now typedefs
+ */
+ switch (typdef)
+ {
+ case tnone:
+ if (toktype == st_C_typedef)
+ {
+ if (typedefs)
+ typdef = ttypedseen;
+ funcdef = fnone;
+ return FALSE;
+ }
+ break;
+ case ttypedseen:
+ switch (toktype)
+ {
+ case st_none:
+ case st_C_typespec:
+ typdef = tend;
+ break;
+ case st_C_struct:
+ case st_C_enum:
+ break;
+ }
+ /* Do not return here, so the structdef stuff has a chance. */
+ break;
+ case tend:
+ switch (toktype)
+ {
+ case st_C_typespec:
+ case st_C_struct:
+ case st_C_enum:
+ return FALSE;
+ }
+ return TRUE;
+ }
+
+ /*
+ * 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.
+ */
+ switch (toktype)
+ {
+ case st_C_struct:
+ case st_C_enum:
+ if (typdef == ttypedseen
+ || (typedefs_and_cplusplus && cblev == 0 && structdef == snone))
+ {
+ structdef = skeyseen;
+ structtype = toktype;
+ }
+ 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.
+
+ DEFUN note for writers of emacs C code:
+ The DEFUN macro, used in emacs C source code, has a first arg
+ that is a string (the lisp function name), and a second arg that
+ is a C function name. Since etags skips strings, the second arg
+ is tagged. This is unfortunate, as it would be better to tag the
+ first arg. The simplest way to deal with this problem would be
+ to name the tag with a name built from the function name, by
+ removing the initial 'F' character and substituting '-' for '_'.
+ Anyway, this assumes that the conventions of naming lisp
+ functions will never change. Currently, this method is not
+ implemented, so writers of emacs code are recommended to put the
+ first two args of a DEFUN on the same line. */
+ 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;
+ }
+
+ /* Detect Objective C constructs. */
+ switch (objdef)
+ {
+ case onone:
+ switch (toktype)
+ {
+ case st_C_objprot:
+ objdef = oprotocol;
+ return FALSE;
+ case st_C_objimpl:
+ objdef = oimplementation;
+ return FALSE;
+ }
+ break;
+ case oimplementation:
+ /* Save the class tag for functions that may be defined inside. */
+ objtag = savenstr (str, len);
+ objdef = oinbody;
+ return FALSE;
+ case oprotocol:
+ /* Save the class tag for categories. */
+ objtag = savenstr (str, len);
+ objdef = otagseen;
+ *is_func = TRUE;
+ return TRUE;
+ case oparenseen:
+ objdef = ocatseen;
+ *is_func = TRUE;
+ return TRUE;
+ case oinbody:
+ break;
+ case omethodsign:
+ if (parlev == 0)
+ {
+ objdef = omethodtag;
+ methodlen = len;
+ grow_linebuffer (&token_name, methodlen+1);
+ strncpy (token_name.buffer, str, len);
+ token_name.buffer[methodlen] = '\0';
+ return TRUE;
+ }
+ return FALSE;
+ case omethodcolon:
+ if (parlev == 0)
+ objdef = omethodparm;
+ return FALSE;
+ case omethodparm:
+ if (parlev == 0)
+ {
+ objdef = omethodtag;
+ methodlen += len;
+ grow_linebuffer (&token_name, methodlen+1);
+ strncat (token_name.buffer, str, len);
+ return TRUE;
+ }
+ return FALSE;
+ case oignore:
+ if (toktype == st_C_objend)
+ {
+ /* 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 lengths of the
+ class tags.
+ free (objtag); */
+ objdef = onone;
+ }
+ return FALSE;
+ }
+
+ /* A function or enum constant? */
+ switch (toktype)
+ {
+ case st_C_typespec:
+ if (funcdef != finlist && funcdef != fignore)
+ funcdef = fnone; /* should be useless */
+ return FALSE;
+ case st_none:
+ if (constantypedefs && structdef == sinbody && structtype == st_C_enum)
+ return TRUE;
+ if (funcdef == fnone)
+ {
+ funcdef = ftagseen;
+ *is_func = TRUE;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/*
+ * C_entries ()
+ * This routine finds functions, typedefs, #define's, enum
+ * constants and struct/union/enum definitions in C syntax
+ * and adds them to the list.
+ */
+typedef struct
+{
+ logical valid;
+ char *str;
+ logical named;
+ int linelen;
+ int lineno;
+ long linepos;
+ char *buffer;
+} TOKEN;
+
+#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 \
+do { \
+ curlinepos = charno; \
+ lineno++; \
+ linecharno = charno; \
+ charno += readline (&curlb, inf); \
+ lp = curlb.buffer; \
+ quotednl = FALSE; \
+ newndx = curndx; \
+} while (0)
+
+#define CNL \
+do { \
+ CNL_SAVE_DEFINEDEF; \
+ if (savetok.valid) \
+ { \
+ tok = savetok; \
+ savetok.valid = FALSE; \
+ } \
+ definedef = dnone; \
+} while (0)
+
+
+void
+make_C_tag (isfun, tokp)
+ logical isfun;
+ TOKEN *tokp;
+{
+ char *name = NULL;
+
+ /* This function should never be called when tok.valid is FALSE, but
+ we must protect against invalid input or internal errors. */
+ if (tokp->valid)
+ {
+ if (CTAGS || tokp->named)
+ name = savestr (token_name.buffer);
+ pfnote (name, isfun,
+ tokp->buffer, tokp->linelen, tokp->lineno, tokp->linepos);
+ tokp->valid = FALSE;
+ }
+ else if (DEBUG)
+ abort ();
+}
+
+
+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 */
+ 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 */
+
+
+ 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;
+ midtoken = inquote = inchar = incomm = quotednl = FALSE;
+ tok.valid = savetok.valid = FALSE;
+ cblev = 0;
+ parlev = 0;
+ cplpl = c_ext & C_PLPL;
+
+ while (!feof (inf))
{
c = *lp++;
if (c == '\\')
CNL;
/* FALLTHRU */
case '\'':
- inchar = FALSE;
+ inchar = FALSE;
break;
}
continue;
}
- else
+ else
switch (c)
{
case '"':
incomm = TRUE;
continue;
}
- else if (cplpl && *lp == '/')
+ else if (/* cplpl && */ *lp == '/')
{
- c = 0;
+ c = '\0';
break;
}
else
/* entering or exiting rules section in yacc file */
lp++;
definedef = dnone; funcdef = fnone;
- typdef= tnone; structdef= snone;
+ typdef = tnone; structdef = snone;
next_token_is_func = FALSE;
midtoken = inquote = inchar = incomm = quotednl = FALSE;
cblev = 0;
else
break;
case '#':
- if (lp == newlb.buffer + 1 && definedef == dnone)
- definedef = dsharpseen;
+ if (definedef == dnone)
+ {
+ char *cp;
+ logical cpptoken = TRUE;
+
+ /* Look back on this line. If all blanks, or nonblanks
+ followed by an end of comment, this is a preprocessor
+ token. */
+ for (cp = newlb.buffer; cp < lp-1; cp++)
+ if (!iswhite (*cp))
+ {
+ if (*cp == '*' && *(cp+1) == '/')
+ {
+ cp++;
+ cpptoken = TRUE;
+ }
+ else
+ cpptoken = FALSE;
+ }
+ if (cpptoken)
+ definedef = dsharpseen;
+ } /* if (definedef == dnone) */
+
continue;
} /* switch (c) */
/* Consider token only if some complicated conditions are satisfied. */
- if (((cblev == 0 && structdef != scolonseen)
- || (cblev == 1 && cplpl && structdef == sinbody))
+ if ((definedef != dnone
+ || (cblev == 0 && structdef != scolonseen)
+ || (cblev == 1 && cplpl && structdef == sinbody)
+ || (structdef == sinbody && structtype == st_C_enum))
+ && typdef != tignore
&& definedef != dignorerest
- && (funcdef != finlist
- || (definedef != dnone && definedef != dignorerest)))
+ && funcdef != finlist)
{
if (midtoken)
{
if (endtoken (c))
{
- if (cplpl && c == ':' && *lp == ':' && begtoken(*(lp + 1)))
+ if (c == ':' && cplpl && *lp == ':' && begtoken(*(lp + 1)))
{
/*
- * This handles :: in the middle, but not at beginning
- * of an identifier.
+ * This handles :: in the middle, but not at the
+ * beginning of an identifier.
*/
lp += 2;
toklen += 3;
{
logical is_func = FALSE;
- tok.lineno = lineno;
- tok.p = newlb.buffer + tokoff;
- tok.len = toklen;
- tok.named = FALSE;
if (yacc_rules
- || consider_token (c, &tok, c_ext, cblev, &is_func))
+ || consider_token (newlb.buffer + tokoff, toklen, c,
+ c_ext, cblev, parlev, &is_func))
{
if (structdef == sinbody
&& definedef == dnone
&& is_func)
/* function defined in C++ class body */
+ {
+ grow_linebuffer (&token_name,
+ strlen(structtag)+2+toklen+1);
+ strcpy (token_name.buffer, structtag);
+ strcat (token_name.buffer, "::");
+ strncat (token_name.buffer,
+ newlb.buffer+tokoff, toklen);
+ tok.named = TRUE;
+ }
+ else if (objdef == ocatseen)
+ /* Objective C category */
+ {
+ grow_linebuffer (&token_name,
+ strlen(objtag)+2+toklen+1);
+ strcpy (token_name.buffer, objtag);
+ strcat (token_name.buffer, "(");
+ strncat (token_name.buffer,
+ newlb.buffer+tokoff, toklen);
+ strcat (token_name.buffer, ")");
+ tok.named = TRUE;
+ }
+ else if (objdef == omethodtag
+ || objdef == omethodparm)
+ /* Objective C method */
{
tok.named = TRUE;
- sprintf (nameb, "%s::%.*s",
- ((structtag[0] == '\0')
- ? "_anonymous_" : structtag),
- tok.len, tok.p);
}
else
{
- sprintf (nameb, "%.*s", tok.len, tok.p);
+ grow_linebuffer (&token_name, toklen+1);
+ strncpy (token_name.buffer,
+ 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;
}
-
- if (structdef == stagseen
- || typdef == tend)
- tok.named = TRUE;
+ tok.lineno = lineno;
+ tok.linelen = tokoff + toklen + 1;
+ tok.buffer = newlb.buffer;
+ tok.linepos = newlinepos;
+ tok.valid = TRUE;
if (definedef == dnone
&& (funcdef == ftagseen
|| structdef == stagseen
- || typdef == tend))
+ || typdef == tend
+ || objdef != onone))
{
- if (newndx == curndx)
- curndx = 1 - curndx; /* switch line buffers */
+ if (current_lb_is_new)
+ switch_line_buffers ();
}
else
- MAKE_TAG_FROM_NEW_LB (is_func);
+ make_C_tag (is_func, &tok);
}
midtoken = FALSE;
}
funcdef = finlist;
continue;
case flistseen:
- MAKE_TAG_FROM_OTH_LB (TRUE);
+ make_C_tag (TRUE, &tok);
funcdef = fignore;
break;
case ftagseen:
structdef = snone;
break;
case dsharpseen:
- /* Take a quick peek ahead for define directive,
- so we can avoid saving the token when not absolutely
- necessary. [This is a speed hack.] */
- if (c == 'd' && strneq(lp, "efine", 5)
- && iswhite(*(lp + 5)))
- {
- SAVE_TOKEN;
- definedef = ddefineseen;
- lp += 6;
- }
- else
- definedef = dignorerest;
- continue;
+ savetok = tok;
}
if (!yacc_rules || lp == newlb.buffer + 1)
{
midtoken = TRUE;
}
continue;
- }
+ } /* if (begtoken) */
} /* if must look at token */
case ':':
if (definedef != dnone)
break;
+ switch (objdef)
+ {
+ case otagseen:
+ objdef = oignore;
+ make_C_tag (TRUE, &tok);
+ break;
+ case omethodtag:
+ case omethodparm:
+ objdef = omethodcolon;
+ methodlen += 1;
+ grow_linebuffer (&token_name, methodlen+1);
+ strcat (token_name.buffer, ":");
+ break;
+ }
if (structdef == stagseen)
structdef = scolonseen;
else
case ftagseen:
if (yacc_rules)
{
- MAKE_TAG_FROM_OTH_LB (FALSE);
+ make_C_tag (FALSE, &tok);
funcdef = fignore;
}
break;
case ';':
if (definedef != dnone)
break;
- if (cblev == 0 && typdef == tend)
+ if (cblev == 0)
+ switch (typdef)
+ {
+ case tend:
+ make_C_tag (FALSE, &tok);
+ /* FALLTHRU */
+ default:
+ typdef = tnone;
+ }
+ if (funcdef != fignore)
{
- typdef = tnone;
- MAKE_TAG_FROM_OTH_LB (FALSE);
+ 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 (funcdef != fignore)
- funcdef = fnone;
- /* FALLTHRU */
+ if (structdef == stagseen)
+ structdef = snone;
+ break;
case ',':
- /* FALLTHRU */
+ if (definedef != dnone)
+ break;
+ switch (objdef)
+ {
+ case omethodtag:
+ case omethodparm:
+ make_C_tag (TRUE, &tok);
+ objdef = oinbody;
+ break;
+ }
+ if (funcdef != finlist && funcdef != fignore)
+ funcdef = fnone;
+ if (structdef == stagseen)
+ structdef = snone;
+ break;
case '[':
if (definedef != dnone)
break;
+ if (cblev == 0 && typdef == tend)
+ {
+ typdef = tignore;
+ make_C_tag (FALSE, &tok);
+ break;
+ }
if (funcdef != finlist && funcdef != fignore)
funcdef = fnone;
if (structdef == stagseen)
case '(':
if (definedef != dnone)
break;
+ if (objdef == otagseen && parlev == 0)
+ objdef = oparenseen;
switch (funcdef)
{
+ case fnone:
+ switch (typdef)
+ {
+ case ttypedseen:
+ case tend:
+ /* Make sure that the next char is not a '*'.
+ This handles constructs like:
+ typedef void OperatorFun (int fun); */
+ if (tok.valid && *lp != '*')
+ {
+ typdef = tignore;
+ make_C_tag (FALSE, &tok);
+ }
+ break;
+ } /* switch (typdef) */
+ break;
case ftagseen:
funcdef = fstartlist;
break;
case ')':
if (definedef != dnone)
break;
- if (--parlev == 0)
+ if (objdef == ocatseen && parlev == 1)
+ {
+ make_C_tag (TRUE, &tok);
+ objdef = oignore;
+ }
+ if (--parlev == 0)
{
switch (funcdef)
{
funcdef = flistseen;
break;
}
+ if (cblev == 0 && typdef == tend)
+ {
+ typdef = tignore;
+ make_C_tag (FALSE, &tok);
+ }
}
else if (parlev < 0) /* can happen due to ill-conceived #if's. */
parlev = 0;
switch (structdef)
{
case skeyseen: /* unnamed struct */
- structtag[0] = '\0';
structdef = sinbody;
+ structtag = "_anonymous_";
break;
case stagseen:
case scolonseen: /* named struct */
structdef = sinbody;
- MAKE_TAG_FROM_OTH_LB (FALSE);
+ make_C_tag (FALSE, &tok);
break;
}
switch (funcdef)
{
case flistseen:
- MAKE_TAG_FROM_OTH_LB (TRUE);
+ make_C_tag (TRUE, &tok);
/* FALLTHRU */
case fignore:
funcdef = fnone;
+ break;
+ case fnone:
+ switch (objdef)
+ {
+ case otagseen:
+ make_C_tag (TRUE, &tok);
+ objdef = oignore;
+ break;
+ case omethodtag:
+ case omethodparm:
+ make_C_tag (TRUE, &tok);
+ objdef = oinbody;
+ break;
+ default:
+ /* Neutralize `extern "C" {' grot. */
+ if (cblev == 0 && structdef == snone && typdef == tnone)
+ cblev = -1;
+ }
}
cblev++;
break;
{
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 lengths of the
+ struct tags.
+ if (structdef == sinbody)
+ free (structtag); */
+
structdef = snone;
- strcpy (structtag, "<error 2>");
+ structtag = "<error>";
}
break;
- case '=':
- case '#': case '+': case '-': case '~': case '&': case '%': case '/':
+ case '+':
+ case '-':
+ if (objdef == oinbody && cblev == 0)
+ {
+ objdef = omethodsign;
+ break;
+ }
+ /* FALLTHRU */
+ case '=': case '#': case '~': case '&': case '%': case '/':
case '|': case '^': case '!': case '<': case '>': case '.': case '?':
if (definedef != dnone)
break;
funcdef = fnone;
break;
case '\0':
+ if (objdef == otagseen)
+ {
+ make_C_tag (TRUE, &tok);
+ objdef = oignore;
+ }
/* If a macro spans multiple lines don't reset its state. */
if (quotednl)
CNL_SAVE_DEFINEDEF;
}
/*
- * 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.
- *
- * 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'.
- *
- * Globals
- * funcdef IN OUT
- * structdef IN OUT
- * definedef IN OUT
- * typdef IN OUT
- * next_token_is_func IN OUT
+ * Process either a C++ file or a C file depending on the setting
+ * of a global flag.
*/
+void
+default_C_entries (inf)
+ FILE *inf;
+{
+ C_entries (cplusplus ? C_PLPL : 0, inf);
+}
-logical
-consider_token (c, tokp, c_ext, cblev, is_func)
- register char c; /* IN: first char after the token */
- register TOKEN *tokp; /* IN: token pointer */
- int c_ext; /* IN: C extensions mask */
- int cblev; /* IN: curly brace level */
- logical *is_func; /* OUT */
+/* Always do plain ANSI C. */
+void
+plain_C_entries (inf)
+ FILE *inf;
{
- enum sym_type toktype = C_symtype(tokp->p, tokp->len, c_ext);
+ C_entries (0, inf);
+}
- /*
- * Advance the definedef state machine.
- */
- switch (definedef)
- {
- case dnone:
- /* We're not on a preprocessor line. */
- break;
- case dsharpseen:
- if (toktype == st_C_define)
- {
- definedef = ddefineseen;
- }
- else
- {
- definedef = dignorerest;
- }
- return (FALSE);
- case ddefineseen:
- /*
- * Make a tag for any macro.
- */
- definedef = dignorerest;
- *is_func = (c == '(');
- if (!*is_func && !constantypedefs)
- return (FALSE);
- else
- return (TRUE);
- case dignorerest:
- return (FALSE);
- default:
- error ("internal error: definedef value is %d", definedef);
- }
+/* Always do C++. */
+void
+Cplusplus_entries (inf)
+ FILE *inf;
+{
+ C_entries (C_PLPL, inf);
+}
- /*
- * Now typedefs
- */
- switch (typdef)
- {
- case tnone:
- if (toktype == st_C_typedef)
- {
- if (typedefs)
- typdef = ttypedseen;
- return (FALSE);
- }
- break;
- case ttypedseen:
- switch (toktype)
- {
- case st_none:
- case st_C_typespec:
- typdef = tend;
- break;
- case st_C_struct:
- case st_C_enum:
- break;
- }
- /* Do not return here, so the structdef stuff has a chance. */
- break;
- case tend:
- switch (toktype)
- {
- case st_C_typespec:
- case st_C_struct:
- case st_C_enum:
- return (FALSE);
- }
- return (TRUE);
- }
+/* Always do C*. */
+void
+Cstar_entries (inf)
+ FILE *inf;
+{
+ C_entries (C_STAR, inf);
+}
- /*
- * 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_struct:
- case st_C_enum:
- if (typdef == ttypedseen
- || (typedefs_and_cplusplus && cblev == 0 && structdef == snone))
- {
- structdef = skeyseen;
- structtype = toktype;
- }
- return (FALSE);
- }
- if (structdef == skeyseen)
- {
- if (structtype == st_C_struct)
- {
- strncpy (structtag, tokp->p, tokp->len);
- structtag[tokp->len] = '\0'; /* for struct/union/class */
- }
- else
- {
- structtag[0] = '\0'; /* for enum (why is it treated differently?) */
- }
- structdef = stagseen;
- return (TRUE);
- }
+/* Always do Yacc. */
+void
+Yacc_entries (inf)
+ FILE *inf;
+{
+ C_entries (YACC, inf);
+}
+\f
+/* Fortran parsing */
- /* Avoid entering funcdef stuff if typdef is going on. */
- if (typdef != tnone)
+char *dbp;
+
+logical
+tail (cp)
+ char *cp;
+{
+ register int len = 0;
+
+ while (*cp && lowcase(*cp) == lowcase(dbp[len]))
+ cp++, len++;
+ if (*cp == '\0' && !intoken(dbp[len]))
{
- definedef = dnone;
- return (FALSE);
+ dbp += len;
+ return TRUE;
}
+ return FALSE;
+}
- /* Detect GNUmacs's function-defining macros. */
- if (definedef == dnone)
+void
+takeprec ()
+{
+ while (isspace (*dbp))
+ dbp++;
+ if (*dbp != '*')
+ return;
+ dbp++;
+ while (isspace (*dbp))
+ dbp++;
+ if (strneq (dbp, "(*)", 3))
{
- if (strneq (tokp->p, "DEF", 3)
- || strneq (tokp->p, "ENTRY", 5)
- || strneq (tokp->p, "SYSCALL", 7)
- || strneq (tokp->p, "PSEUDO", 6))
- {
- next_token_is_func = TRUE;
- return (FALSE);
- }
- if (strneq (tokp->p, "EXFUN", 5))
- {
- next_token_is_func = FALSE;
- return (FALSE);
- }
+ dbp += 3;
+ return;
}
- if (next_token_is_func)
+ if (!isdigit (*dbp))
{
- next_token_is_func = FALSE;
- funcdef = fnone;
- *is_func = TRUE; /* to force search string in ctags */
- return (TRUE);
+ --dbp; /* force failure */
+ return;
}
+ do
+ dbp++;
+ while (isdigit (*dbp));
+}
- /* A function? */
- switch (toktype)
+void
+getit (inf)
+ FILE *inf;
+{
+ register char *cp;
+
+ while (isspace (*dbp))
+ dbp++;
+ if (*dbp == '\0')
{
- case st_C_typespec:
- funcdef = fnone; /* should be useless */
- return (FALSE);
- default:
- if (funcdef == fnone)
- {
- funcdef = ftagseen;
- *is_func = TRUE;
- return (TRUE);
- }
+ lineno++;
+ linecharno = charno;
+ charno += readline (&lb, inf);
+ dbp = lb.buffer;
+ if (dbp[5] != '&')
+ return;
+ dbp += 6;
+ while (isspace (*dbp))
+ dbp++;
}
-
- return (FALSE);
+ if (!isalpha (*dbp)
+ && *dbp != '_'
+ && *dbp != '$')
+ return;
+ for (cp = dbp + 1;
+ (*cp
+ && (isalpha (*cp) || isdigit (*cp) || (*cp == '_') || (*cp == '$')));
+ cp++)
+ continue;
+ pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
}
-\f
-/* Fortran parsing */
-char *dbp;
-int pfcnt;
-
-int
-PF_funcs (fi)
- FILE *fi;
+void
+Fortran_functions (inf)
+ FILE *inf;
{
lineno = 0;
charno = 0;
- pfcnt = 0;
- while (!feof (fi))
+ while (!feof (inf))
{
lineno++;
linecharno = charno;
- charno += readline (&lb, fi);
+ charno += readline (&lb, inf);
dbp = lb.buffer;
if (*dbp == '%')
dbp++; /* Ratfor escape to fortran */
while (isspace (*dbp))
dbp++;
- if (*dbp == 0)
+ if (*dbp == '\0')
continue;
- switch (*dbp | ' ')
+ switch (lowcase (*dbp))
{
case 'i':
if (tail ("integer"))
{
while (isspace (*dbp))
dbp++;
- if (*dbp == 0)
+ if (*dbp == '\0')
continue;
if (tail ("precision"))
break;
}
while (isspace (*dbp))
dbp++;
- if (*dbp == 0)
+ if (*dbp == '\0')
continue;
- switch (*dbp | ' ')
+ switch (lowcase (*dbp))
{
case 'f':
if (tail ("function"))
- getit (fi);
+ getit (inf);
continue;
case 's':
if (tail ("subroutine"))
- getit (fi);
+ getit (inf);
continue;
case 'e':
if (tail ("entry"))
- getit (fi);
+ getit (inf);
continue;
case 'p':
if (tail ("program"))
{
- getit (fi);
+ getit (inf);
continue;
}
if (tail ("procedure"))
- getit (fi);
+ getit (inf);
continue;
}
}
- return (pfcnt);
-}
-
-logical
-tail (cp)
- char *cp;
-{
- register int len = 0;
-
- while (*cp && (*cp | ' ') == (dbp[len] | ' '))
- cp++, len++;
- if (*cp == 0)
- {
- dbp += len;
- return (TRUE);
- }
- return (FALSE);
-}
-
-void
-takeprec ()
-{
- while (isspace (*dbp))
- dbp++;
- if (*dbp != '*')
- return;
- dbp++;
- while (isspace (*dbp))
- dbp++;
- if (!isdigit (*dbp))
- {
- --dbp; /* force failure */
- return;
- }
- do
- dbp++;
- while (isdigit (*dbp));
}
-
+\f
+/*
+ * Bob Weiner, Motorola Inc., 4/3/94
+ * Unix and microcontroller assembly tag handling
+ * look for '^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]'
+ */
void
-getit (fi)
- FILE *fi;
+Asm_labels (inf)
+ FILE *inf;
{
register char *cp;
- char c;
- char nambuf[BUFSIZ];
- while (isspace (*dbp))
- dbp++;
- if (*dbp == '\0')
+ lineno = 0;
+ charno = 0;
+
+ while (!feof (inf))
{
lineno++;
linecharno = charno;
- charno += readline (&lb, fi);
- dbp = lb.buffer;
- if (dbp[5] != '&')
- return;
- dbp += 6;
- while (isspace (*dbp))
- dbp++;
+ charno += readline (&lb, inf);
+ cp = lb.buffer;
+
+ /* If first char is alphabetic or one of [_.$], test for colon
+ following identifier. */
+ if (isalpha (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
+ {
+ /* Read past label. */
+ cp++;
+ while (isalnum (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
+ cp++;
+ if (*cp == ':' || isspace (*cp))
+ {
+ /* Found end of label, so copy it and add it to the table. */
+ pfnote ((CTAGS) ? savenstr(lb.buffer, cp-lb.buffer) : NULL, TRUE,
+ lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
+ }
+ }
}
- if (!isalpha (*dbp)
- && *dbp != '_'
- && *dbp != '$')
- return;
- for (cp = dbp + 1;
- (*cp
- && (isalpha (*cp) || isdigit (*cp) || (*cp == '_') || (*cp == '$')));
- cp++)
- continue;
- c = *cp;
- *cp = '\0';
- strcpy (nambuf, dbp);
- *cp = c;
- pfnote (nambuf, TRUE, FALSE, lb.buffer,
- cp - lb.buffer + 1, lineno, linecharno);
- pfcnt++;
}
-
-/* Handle a file of assembler code. */
-
+\f
+/*
+ * Perl support by Bart Robinson <lomew@cs.utah.edu>
+ * Perl sub names: look for /^sub[ \t\n]+[^ \t\n{]+/
+ */
void
-Asm_funcs (fi)
- FILE *fi;
+Perl_functions (inf)
+ FILE *inf;
{
- int i;
- register char c;
+ register char *cp;
lineno = 0;
charno = 0;
- pfcnt = 0;
- while (!feof (fi))
+ while (!feof (inf))
{
lineno++;
- linecharno = charno;
- charno += readline (&lb, fi);
- dbp = lb.buffer;
-
- for (i = 0; ((c = dbp[i]) && !isspace (c)) && (c != ':'); i++)
- ;
+ linecharno = charno;
+ charno += readline (&lb, inf);
+ cp = lb.buffer;
- if ((i > 0) && (c == ':'))
- getit (fi);
+ if (*cp++ == 's' && *cp++ == 'u' && *cp++ == 'b' && isspace(*cp++))
+ {
+ while (*cp && isspace(*cp))
+ cp++;
+ while (*cp && ! isspace(*cp) && *cp != '{')
+ cp++;
+ pfnote ((CTAGS) ? savenstr (lb.buffer, cp-lb.buffer) : NULL, TRUE,
+ lb.buffer, cp - 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; \
-}
-
-/* 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.
+/*
+ * 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
-PAS_funcs (fi)
- FILE *fi;
+Pascal_functions (inf)
+ FILE *inf;
{
struct linebuffer tline; /* mostly copied from C_entries */
long save_lcno;
- int save_lineno;
- char c, *cp;
- char nambuf[BUFSIZ];
+ int save_lineno, save_len;
+ char c, *cp, *namebuf;
logical /* each of these flags is TRUE iff: */
- incomm1, /* point is inside {..} comment */
- incomm2, /* point is inside (*..*) comment */
+ incomment, /* point is inside a comment */
inquote, /* point is inside '..' string */
- get_tagname, /* point is after PROCEDURE/FUNCTION */
- /* keyword, so next item = potential tag */
+ get_tagname, /* point is after PROCEDURE/FUNCTION
+ keyword, so next item = potential tag */
found_tag, /* point is after a potential tag */
inparms, /* point is within parameter-list */
- verify_tag; /* point has passed the parm-list, so the */
- /* next token will determine whether */
- /* this is a FORWARD/EXTERN to be */
- /* ignored, or whether it is a real tag */
+ verify_tag; /* point has passed the parm-list, so the
+ next token will determine whether this
+ is a FORWARD/EXTERN to be ignored, or
+ whether it is a real tag */
lineno = 0;
charno = 0;
dbp = lb.buffer;
- *dbp = 0;
+ *dbp = '\0';
+ save_len = 0;
initbuffer (&tline);
- incomm1 = incomm2 = inquote = FALSE;
+ incomment = inquote = FALSE;
found_tag = FALSE; /* have a proc name; check if extern */
get_tagname = FALSE; /* have found "procedure" keyword */
inparms = FALSE; /* found '(' after "proc" */
verify_tag = FALSE; /* check if "extern" is ahead */
/* long main loop to get next char */
- while (!feof (fi))
+ while (!feof (inf))
{
c = *dbp++;
- if (c == 0) /* if end of line */
+ if (c == '\0') /* if end of line */
{
- GET_NEW_LINE;
- if (*dbp == 0)
+ lineno++;
+ linecharno = charno;
+ charno += readline (&lb, inf);
+ dbp = lb.buffer;
+ if (*dbp == '\0')
continue;
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 */
+ c = *dbp++; /* only if don't need *dbp pointing
+ to the beginning of the name of
+ the procedure or function */
}
- if (incomm1) /* within { - } comments */
+ if (incomment)
{
- if (c == '}')
- incomm1 = FALSE;
- continue;
- }
- else if (incomm2) /* within (* - *) comments */
- {
- if (c == '*')
+ if (c == '}') /* within { } comments */
+ incomment = FALSE;
+ else if (c == '*' && *dbp == ')') /* within (* *) comments */
{
- while ((c = *dbp++) == '*')
- continue;
- if (c == 0)
- GET_NEW_LINE;
- if (c == ')')
- incomm2 = FALSE;
+ dbp++;
+ incomment = FALSE;
}
continue;
}
case '\'':
inquote = TRUE; /* found first quote */
continue;
- case '{': /* found open-{-comment */
- incomm1 = TRUE;
+ case '{': /* found open { comment */
+ incomment = TRUE;
continue;
case '(':
- if (*dbp == '*') /* found open-(*-comment */
+ if (*dbp == '*') /* found open (* comment */
{
- incomm2 = TRUE;
+ incomment = TRUE;
dbp++;
}
else if (found_tag) /* found '(' after tag, i.e., parm-list */
inparms = FALSE;
continue;
case ';':
- if ((found_tag) && (!inparms)) /* end of proc or fn stmt */
+ if (found_tag && !inparms) /* end of proc or fn stmt */
{
verify_tag = TRUE;
break;
}
continue;
}
- if ((found_tag) && (verify_tag) && (*dbp != ' '))
+ if (found_tag && verify_tag && (*dbp != ' '))
{
/* check if this is an "extern" declaration */
- if (*dbp == 0)
+ if (*dbp == '\0')
continue;
- if ((*dbp == 'e') || (*dbp == 'E'))
+ if (lowcase (*dbp == 'e'))
{
if (tail ("extern")) /* superfluous, really! */
{
verify_tag = FALSE;
}
}
- else if ((*dbp == 'f') || (*dbp == 'F'))
+ else if (lowcase (*dbp) == 'f')
{
if (tail ("forward")) /* check for forward reference */
{
verify_tag = FALSE;
}
}
- if ((found_tag) && (verify_tag)) /* not external proc, so make tag */
+ if (found_tag && verify_tag) /* not external proc, so make tag */
{
found_tag = FALSE;
verify_tag = FALSE;
- pfnote (nambuf, TRUE, FALSE,
- tline.buffer, cp - tline.buffer + 1,
- save_lineno, save_lcno);
+ pfnote (namebuf, TRUE,
+ tline.buffer, save_len, save_lineno, save_lcno);
continue;
}
}
if (get_tagname) /* grab name of proc or fn */
{
- if (*dbp == 0)
+ if (*dbp == '\0')
continue;
/* save all values for later tagging */
- tline.size = lb.size;
+ grow_linebuffer (&tline, strlen (lb.buffer) + 1);
strcpy (tline.buffer, lb.buffer);
save_lineno = lineno;
save_lcno = linecharno;
/* grab block name */
for (cp = dbp + 1; *cp && (!endtoken (*cp)); cp++)
continue;
- c = cp[0];
- cp[0] = 0;
- strcpy (nambuf, dbp);
- cp[0] = c;
- dbp = cp; /* restore dbp to e-o-token */
+ namebuf = (CTAGS) ? savenstr (dbp, cp-dbp) : NULL;
+ dbp = cp; /* set dbp to e-o-token */
+ save_len = dbp - lb.buffer + 1;
get_tagname = FALSE;
found_tag = TRUE;
continue;
/* and proceed to check for "extern" */
}
- if ((!incomm1) && (!incomm2) && (!inquote) &&
- (!found_tag) && (!get_tagname))
+ else if (!incomment && !inquote && !found_tag)
{
/* check for proc/fn keywords */
- switch (c | ' ')
+ switch (lowcase (c))
{
case 'p':
if (tail ("rocedure")) /* c = 'p', dbp has advanced */
continue;
}
}
- } /* while not e-o-f */
+ } /* while not eof */
+
+ free (tline.buffer);
}
\f
/*
* lisp tag functions
- * just look for (def or (DEF
+ * 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)));
+}
+
+void
+L_getit ()
+{
+ register char *cp;
+
+ if (*dbp == '\'') /* Skip prefix quote */
+ dbp++;
+ else if (*dbp == '(' && L_isquote (dbp)) /* Skip "(quote " */
+ {
+ dbp += 7;
+ while (isspace(*dbp))
+ 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);
+}
void
-L_funcs (fi)
- FILE *fi;
+Lisp_functions (inf)
+ FILE *inf;
{
lineno = 0;
charno = 0;
- pfcnt = 0;
- while (!feof (fi))
+ while (!feof (inf))
{
lineno++;
linecharno = charno;
- charno += readline (&lb, fi);
+ charno += readline (&lb, inf);
dbp = lb.buffer;
if (dbp[0] == '(')
{
}
}
}
-
-int
-L_isdef (dbp)
- register char *dbp;
-{
- return ((dbp[1] == 'd' || dbp[1] == 'D')
- && (dbp[2] == 'e' || dbp[2] == 'E')
- && (dbp[3] == 'f' || dbp[3] == 'F'));
-}
-
-int
-L_isquote (dbp)
- register char *dbp;
-{
- return ((*(++dbp) == 'q' || *dbp == 'Q')
- && (*(++dbp) == 'u' || *dbp == 'U')
- && (*(++dbp) == 'o' || *dbp == 'O')
- && (*(++dbp) == 't' || *dbp == 'T')
- && (*(++dbp) == 'e' || *dbp == 'E')
- && isspace(*(++dbp)));
-}
-
-void
-L_getit ()
-{
- register char *cp;
- char c;
- char nambuf[BUFSIZ];
-
- if (*dbp == '\'') /* Skip prefix quote */
- dbp++;
- else if (*dbp == '(' && L_isquote (dbp)) /* Skip "(quote " */
- {
- dbp += 7;
- while (isspace(*dbp))
- dbp++;
- }
- for (cp = dbp /*+1*/; *cp && *cp != '(' && *cp != ' ' && *cp != ')'; cp++)
- continue;
- if (cp == dbp)
- return;
-
- c = cp[0];
- cp[0] = 0;
- strcpy (nambuf, dbp);
- cp[0] = c;
- pfnote (nambuf, TRUE, FALSE, lb.buffer,
- cp - lb.buffer + 1, lineno, linecharno);
- pfcnt++;
-}
\f
/*
* Scheme tag functions
* look for (set! xyzzy
*/
-static void get_scheme ();
+void get_scheme ();
void
-Scheme_funcs (fi)
- FILE *fi;
+Scheme_functions (inf)
+ FILE *inf;
{
lineno = 0;
charno = 0;
- pfcnt = 0;
- while (!feof (fi))
+ while (!feof (inf))
{
lineno++;
linecharno = charno;
- charno += readline (&lb, fi);
+ charno += readline (&lb, inf);
dbp = lb.buffer;
if (dbp[0] == '(' &&
(dbp[1] == 'D' || dbp[1] == 'd') &&
}
}
-static void
+void
get_scheme ()
{
register char *cp;
- char c;
- char nambuf[BUFSIZ];
- if (*dbp == 0)
+ 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++)
+ for (cp = dbp + 1;
+ *cp && *cp != '(' && *cp != ')' && !isspace (*cp);
+ cp++)
continue;
- /* Null terminate the string there. */
- c = cp[0];
- cp[0] = 0;
- /* Copy the string */
- strcpy (nambuf, dbp);
- /* Unterminate the string */
- cp[0] = c;
- /* Announce the change */
- pfnote (nambuf, TRUE, FALSE, lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
- pfcnt++;
+ 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. */
/* TEX_toktab is a table of TeX control sequences that define tags.
Each TEX_tabent records one such control sequence.
CONVERT THIS TO USE THE Stab TYPE!! */
-
struct TEX_tabent
{
char *name;
/* Default set of control sequences to put into TEX_toktab.
The value of environment var TEXTAGS is prepended to this. */
-static char *TEX_defenv =
-":chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem:typeout";
+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 ();
-void TEX_getit ();
int TEX_Token ();
+#if TeX_named_tokens
+void TEX_getit ();
+#endif
-static char TEX_esc = '\\';
-static char TEX_opgrp = '{';
-static char TEX_clgrp = '}';
+char TEX_esc = '\\';
+char TEX_opgrp = '{';
+char TEX_clgrp = '}';
/*
* TeX/LaTeX scanning loop.
*/
-
void
-TEX_funcs (fi)
- FILE *fi;
+TeX_functions (inf)
+ FILE *inf;
{
char *lasthit;
lineno = 0;
charno = 0;
- pfcnt = 0;
/* Select either \ or ! as escape character. */
- TEX_mode (fi);
+ TEX_mode (inf);
/* Initialize token table once from environment. */
if (!TEX_toktab)
TEX_toktab = TEX_decode_env ("TEXTAGS", TEX_defenv);
- while (!feof (fi))
+ while (!feof (inf))
{ /* Scan each line in file */
lineno++;
linecharno = charno;
- charno += readline (&lb, fi);
+ charno += readline (&lb, inf);
dbp = lb.buffer;
lasthit = dbp;
- while (dbp = etags_index (dbp, TEX_esc)) /* Look at each escape in line */
+ while (dbp = etags_strchr (dbp, TEX_esc)) /* Look at each esc in line */
{
register int i;
i = TEX_Token (lasthit);
if (0 <= i)
{
+ pfnote ((char *)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 */
}
}
#define TEX_SESC '!'
#define TEX_cmt '%'
-/* Figure out whether TeX's escapechar is '\\' or '!' and set grouping */
-/* chars accordingly. */
-
+/* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
+ chars accordingly. */
void
-TEX_mode (f)
- FILE *f;
+TEX_mode (inf)
+ FILE *inf;
{
int c;
- while ((c = getc (f)) != EOF)
+ while ((c = getc (inf)) != EOF)
{
/* Skip to next line if we hit the TeX comment char. */
if (c == TEX_cmt)
while (c != '\n')
- c = getc (f);
+ c = getc (inf);
else if (c == TEX_LESC || c == TEX_SESC )
break;
}
TEX_opgrp = '<';
TEX_clgrp = '>';
}
- rewind (f);
+ rewind (inf);
}
-/* Read environment and prepend it to the default string. */
-/* Build token table. */
-
+/* Read environment and prepend it to the default string.
+ Build token table. */
struct TEX_tabent *
TEX_decode_env (evarname, defenv)
char *evarname;
/* Allocate a token table */
for (size = 1, p = env; p;)
- if ((p = etags_index (p, ':')) && *(++p))
+ if ((p = etags_strchr (p, ':')) && *(++p))
size++;
/* Add 1 to leave room for null terminator. */
tab = xnew (size + 1, struct TEX_tabent);
/* zero-length strings (leading ':', "::" and trailing ':') */
for (i = 0; *env;)
{
- p = etags_index (env, ':');
+ p = etags_strchr (env, ':');
if (!p) /* End of environment string. */
p = env + strlen (env);
if (p - env > 0)
return tab;
}
-/* 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. */
+#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
+ (this distinguishes it from `TEX_toktab' */
+int
+TEX_Token (cp)
+ char *cp;
+{
+ int i;
+
+ for (i = 0; TEX_toktab[i].len > 0; i++)
+ if (strneq (TEX_toktab[i].name, cp, TEX_toktab[i].len))
+ return i;
+ return -1;
+}
+\f
+/*
+ * Prolog support (rewritten) by Anders Lindgren, Mar. 96
+ *
+ * Assumes that the predicate starts at column 0.
+ * Only the first clause of a predicate is added.
+ */
+void
+Prolog_functions (inf)
+ FILE *inf;
+{
+ int prolog_pred ();
+ void prolog_skip_comment ();
+
+ char * last;
+ int len;
+ int allocated;
+
+ allocated = 0;
+ len = 0;
+ last = NULL;
+
+ lineno = 0;
+ linecharno = 0;
+ charno = 0;
+
+ while (!feof (inf))
+ {
+ lineno++;
+ linecharno += charno;
+ charno = readline (&lb, inf);
+ dbp = lb.buffer;
+ if (dbp[0] == '\0') /* Empty line */
+ continue;
+ else if (isspace (dbp[0])) /* Not a predicate */
+ continue;
+ else if (dbp[0] == '/' && dbp[1] == '*') /* comment. */
+ prolog_skip_comment (&lb, inf);
+ else if (len = prolog_pred (dbp, last))
+ {
+ /* Predicate. 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)
+ last = (char *) xrealloc(last, len + 1);
+ allocated = len + 1;
+ strncpy (last, dbp, len);
+ last[len] = '\0';
+ }
+ }
+}
+
+
+void
+prolog_skip_comment (plb, inf)
+ struct 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 definition is added if it matches:
+ * <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 0 if no header
+ * was found.
+ */
+int
+prolog_pred (s, last)
+ char *s;
+ char *last; /* Name of last clause. */
+{
+ int prolog_atom();
+ int prolog_white();
+
+ int pos;
+ int len;
+
+ pos = prolog_atom(s, 0);
+ if (pos < 1)
+ return 0;
+
+ len = pos;
+ pos += prolog_white(s, pos);
+
+ if ((s[pos] == '(') || (s[pos] == '.'))
+ {
+ if (s[pos] == '(')
+ pos++;
+
+ /* Save only the first clause. */
+ if ((last == NULL) ||
+ (len != strlen(last)) ||
+ (strncmp(s, last, len) != 0))
+ {
+ pfnote ((CTAGS) ? savenstr (s, len) : NULL, TRUE,
+ s, pos, lineno, linecharno);
+ return len;
+ }
+ }
+ 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.
+ */
+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] == '_'))
+ {
+ pos++;
+ }
+ 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++;
+ }
+ return pos - origpos;
+ }
+ else
+ return -1;
+}
+
+/* Consume whitespace. Return the number of bytes eaten. */
+int
+prolog_white (s, pos)
+ char *s;
+ int pos;
+{
+ int origpos;
+
+ origpos = pos;
+
+ while (isspace(s[pos]))
+ pos++;
+
+ return pos - origpos;
+}
+\f
+/*
+ * Support for Erlang -- Anders Lindgren, Feb 1996.
+ *
+ * Generates tags for functions, defines, and records.
+ *
+ * Assumes that Erlang functions start at column 0.
+ */
+void
+Erlang_functions (inf)
+ FILE *inf;
+{
+ int erlang_func ();
+ void erlang_attribute ();
+
+ char * last;
+ int len;
+ int allocated;
+
+ allocated = 0;
+ len = 0;
+ last = NULL;
+
+ lineno = 0;
+ linecharno = 0;
+ charno = 0;
+
+ while (!feof (inf))
+ {
+ lineno++;
+ linecharno += charno;
+ charno = readline (&lb, inf);
+ dbp = lb.buffer;
+ if (dbp[0] == '\0') /* Empty line */
+ continue;
+ else if (isspace (dbp[0])) /* Not function nor attribute */
+ continue;
+ else if (dbp[0] == '%') /* comment */
+ continue;
+ else if (dbp[0] == '"') /* Sometimes, strings start in column one */
+ continue;
+ else if (dbp[0] == '-') /* attribute, e.g. "-define" */
+ {
+ erlang_attribute(dbp);
+ last = NULL;
+ }
+ else if (len = erlang_func (dbp, last))
+ {
+ /*
+ * 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)
+ last = (char *) xrealloc(last, len + 1);
+ allocated = len + 1;
+ strncpy (last, dbp, 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.
+ */
+int
+erlang_func (s, last)
+ char *s;
+ char *last; /* Name of last clause. */
+{
+ int erlang_atom ();
+ int erlang_white ();
+
+ int pos;
+ int len;
+
+ pos = erlang_atom(s, 0);
+ if (pos < 1)
+ return 0;
+
+ len = pos;
+ pos += erlang_white(s, pos);
+
+ if (s[pos++] == '(')
+ {
+ /* Save only the first clause. */
+ if ((last == NULL) ||
+ (len != strlen(last)) ||
+ (strncmp(s, last, len) != 0))
+ {
+ pfnote ((CTAGS) ? savenstr (s, len) : NULL, 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}).
+ */
void
-TEX_getit (name, len)
- char *name;
- int len;
+erlang_attribute (s)
+ char *s;
{
- char *p = name + len;
- char nambuf[BUFSIZ];
+ int erlang_atom ();
+ int erlang_white ();
- if (*name == 0)
- return;
+ int pos;
+ int len;
- /* Let tag name extend to next group close (or end of line) */
- while (*p && *p != TEX_clgrp)
- p++;
- strncpy (nambuf, name, p - name);
- nambuf[p - name] = 0;
+ if ((strncmp(s, "-define", 7) == 0) ||
+ (strncmp(s, "-record", 7) == 0))
+ {
+ pos = 7;
+ pos += erlang_white(s, pos);
- pfnote (nambuf, TRUE, FALSE, lb.buffer, strlen (lb.buffer), lineno, linecharno);
- pfcnt++;
+ if (s[pos++] == '(')
+ {
+ pos += erlang_white(s, pos);
+
+ if (len = erlang_atom(s, pos))
+ {
+ pfnote ((CTAGS) ? savenstr (& s[pos], len) : NULL, TRUE,
+ s, pos + len, lineno, linecharno);
+ }
+ }
+ }
+ return;
}
-/* If the text at CP matches one of the tag-defining TeX command names,
- return the etags_index of that command in TEX_toktab.
- Otherwise return -1. */
-/* Keep the capital `T' in `Token' for dumb truncating compilers
- (this distinguishes it from `TEX_toktab' */
+/*
+ * Consume an Erlang atom (or variable).
+ * Return the number of bytes consumed, or -1 if there was an error.
+ */
int
-TEX_Token (cp)
- char *cp;
+erlang_atom (s, pos)
+ char *s;
+ int pos;
{
- int i;
+ int origpos;
- for (i = 0; TEX_toktab[i].len > 0; i++)
- if (strneq (TEX_toktab[i].name, cp, TEX_toktab[i].len))
- return i;
- return -1;
-}
-\f
-/* Support for Prolog. */
+ origpos = pos;
-/* whole head (not only functor, but also arguments)
- is gotten in compound term. */
+ if (isalpha (s[pos]) || s[pos] == '_')
+ {
+ /* The atom is unquoted. */
+ pos++;
+ while (isalnum (s[pos]) || s[pos] == '_')
+ pos++;
+ return pos - origpos;
+ }
+ else if (s[pos] == '\'')
+ {
+ pos++;
-void
-prolog_getit (s, lineno, linecharno)
+ 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;
+}
+
+/* Consume whitespace. Return the number of bytes eaten */
+int
+erlang_white (s, pos)
char *s;
- int lineno;
- long linecharno;
+ int pos;
{
- char nambuf[BUFSIZ], *save_s, tmpc;
- int insquote, npar;
+ int origpos;
- save_s = s;
- insquote = FALSE;
- npar = 0;
- while (1)
+ origpos = pos;
+
+ while (isspace (s[pos]))
+ pos++;
+
+ return pos - origpos;
+}
+\f
+#ifdef ETAGS_REGEXPS
+/* 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 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 *
+scan_separators (name)
+ char *name;
+{
+ char sep = name[0];
+ char *copyto = name;
+ logical quoted = FALSE;
+
+ for (++name; *name != '\0'; ++name)
{
- if (*s == '\0') /* syntax error. */
- return;
- else if (insquote && *s == '\'' && *(s + 1) == '\'')
- s += 2;
- else if (*s == '\'')
+ if (quoted)
{
- insquote = !insquote;
- s++;
- }
- else if (!insquote && *s == '(')
- {
- npar++;
- s++;
- }
- else if (!insquote && *s == ')')
- {
- npar--;
- s++;
- if (npar == 0)
- break;
- else if (npar < 0) /* syntax error. */
- return;
- }
- else if (!insquote && *s == '.' && (isspace (*(s + 1)) || *(s + 1) == '\0'))
- { /* fullstop. */
- if (npar != 0) /* syntax error. */
- return;
- s++;
- break;
+ if (*name == 't')
+ *copyto++ = '\t';
+ else if (*name == sep)
+ *copyto++ = sep;
+ else
+ {
+ /* Something else is quoted, so preserve the quote. */
+ *copyto++ = '\\';
+ *copyto++ = *name;
+ }
+ quoted = FALSE;
}
+ else if (*name == '\\')
+ quoted = TRUE;
+ else if (*name == sep)
+ break;
else
- s++;
+ *copyto++ = *name;
}
- tmpc = *s;
- *s = '\0';
- strcpy (nambuf, save_s);
- *s = tmpc;
- pfnote (nambuf, TRUE, FALSE, save_s, strlen (nambuf), lineno, linecharno);
-}
-/* It is assumed that prolog predicate starts from column 0. */
+ /* Terminate copied string. */
+ *copyto = '\0';
+ return name;
+}
+/* Turn a name, which is an ed-style (but Emacs syntax) regular
+ expression, into a real regular expression by compiling it. */
void
-prolog_funcs (fi)
- FILE *fi;
+add_regex (regexp_pattern)
+ char *regexp_pattern;
{
- void skip_comment (), prolog_getit ();
+ char *name;
+ const char *err;
+ struct re_pattern_buffer *patbuf;
- lineno = linecharno = charno = 0;
- while (!feof (fi))
+ if (regexp_pattern == NULL)
{
- lineno++;
- linecharno += charno;
- charno = readline (&lb, fi) + 1; /* 1 for newline. */
- dbp = lb.buffer;
- if (isspace (dbp[0])) /* not predicate header. */
- continue;
- else if (dbp[0] == '%') /* comment. */
- continue;
- else if (dbp[0] == '/' && dbp[1] == '*') /* comment. */
- skip_comment (&lb, fi, &lineno, &linecharno);
- else /* found. */
- prolog_getit (dbp, lineno, linecharno);
+ /* Remove existing regexps. */
+ num_patterns = 0;
+ patterns = NULL;
+ return;
}
-}
-void
-skip_comment (plb, fi, plineno, plinecharno)
- struct linebuffer *plb;
- FILE *fi;
- int *plineno; /* result */
- long *plinecharno; /* result */
-{
- while (!substr ("*/", plb->buffer))
+ if (regexp_pattern[0] == '\0')
{
- (*plineno)++;
- *plinecharno += readline (plb, fi) + 1;
- } /* 1 for newline. */
-}
+ error ("missing regexp", (char *)NULL);
+ return;
+ }
+ if (regexp_pattern[strlen(regexp_pattern)-1] != regexp_pattern[0])
+ {
+ error ("%s: unterminated regexp", regexp_pattern);
+ return;
+ }
+ name = scan_separators (regexp_pattern);
+ if (regexp_pattern[0] == '\0')
+ {
+ error ("null regexp", (char *)NULL);
+ return;
+ }
+ (void) scan_separators (name);
-/* Return TRUE if 'sub' exists somewhere in 's'. */
+ patbuf = xnew (1, struct re_pattern_buffer);
+ patbuf->translate = NULL;
+ patbuf->fastmap = NULL;
+ patbuf->buffer = NULL;
+ patbuf->allocated = 0;
-int
-substr (sub, s)
- char *sub;
- char *s;
-{
- while (*s && (s = etags_index (s, *sub)))
- if (prestr (sub, s))
- return (TRUE);
- else
- s++;
- return (FALSE);
-}
+ err = re_compile_pattern (regexp_pattern, strlen (regexp_pattern), patbuf);
+ if (err != NULL)
+ {
+ error ("%s while compiling pattern", err);
+ return;
+ }
-/* Return TRUE if 'pre' is prefix of string 's'. */
+ 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;
+}
-int
-prestr (pre, s)
- char *pre;
- char *s;
+/*
+ * Do the substitutions indicated by the regular expression and
+ * arguments.
+ */
+char *
+substitute (in, out, regs)
+ char *in, *out;
+ struct re_registers *regs;
{
- if (*pre == '\0')
- return (TRUE);
- else if (*pre == *s)
- return (prestr (pre + 1, s + 1));
- else
- return (FALSE);
+ char *result, *t;
+ int size, i;
+
+ result = NULL;
+ size = strlen (out);
+
+ /* Pass 1: figure out how much size to allocate. */
+ if (out[strlen (out) - 1] == '\\')
+ fatal ("pattern error in %s", out);
+ for (t = out; *t != '\0'; ++t)
+ if (*t == '\\' && isdigit (*++t))
+ {
+ int dig = *t - '0';
+ size += regs->end[dig] - regs->start[dig] - 2;
+ }
+
+ /* Allocate space and do the substitutions. */
+ result = xnew (size + 1, char);
+ for (i = 0; *out != '\0'; ++out)
+ {
+ if (*out == '\\' && isdigit (*++out))
+ {
+ /* Using "dig2" satisfies my debugger. Bleah. */
+ int dig2 = *out - '0';
+ int diglen = regs->end[dig2] - regs->start[dig2];
+ strncpy (result + i, in + regs->start[dig2], diglen);
+ i += diglen;
+ }
+ else
+ result[i++] = *out;
+ }
+ result[i] = '\0';
+ if (DEBUG && i > size)
+ abort ();
+
+ return result;
}
\f
+#endif /* ETAGS_REGEXPS */
/* Initialize a linebuffer for use */
-
void
initbuffer (linebuffer)
struct linebuffer *linebuffer;
* which is the length of the line including the newline, if any.
*/
long
-readline (linebuffer, stream)
+readline_internal (linebuffer, stream)
struct linebuffer *linebuffer;
register FILE *stream;
{
char *buffer = linebuffer->buffer;
register char *p = linebuffer->buffer;
register char *pend;
- int newline; /* 1 if ended with newline, 0 if ended with EOF */
+ int chars_deleted;
pend = p + linebuffer->size; /* Separate to avoid 386/IX compiler bug. */
pend = buffer + linebuffer->size;
linebuffer->buffer = buffer;
}
- if (c == EOF || c == '\n')
+ if (c == EOF)
+ {
+ *p = '\0';
+ chars_deleted = 0;
+ break;
+ }
+ if (c == '\n')
{
- *p = 0;
- newline = (c == '\n') ? 1 : 0;
+ if (p > buffer && p[-1] == '\r')
+ {
+ *--p = '\0';
+#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;
+ }
break;
}
*p++ = c;
}
- return p - buffer + newline;
+ return p - buffer + chars_deleted;
+}
+
+/*
+ * Like readline_internal, above, but try to match the input
+ * line against any existing regular expressions.
+ */
+long
+readline (linebuffer, stream)
+ struct linebuffer *linebuffer;
+ FILE *stream;
+{
+ /* Read new line. */
+ long result = readline_internal (linebuffer, stream);
+#ifdef ETAGS_REGEXPS
+ int i;
+
+ /* Match against all listed patterns. */
+ for (i = 0; i < num_patterns; ++i)
+ {
+ int match = re_match (patterns[i].pattern, linebuffer->buffer,
+ (int)result, 0, &patterns[i].regs);
+ switch (match)
+ {
+ 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')
+ {
+ /* 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);
+ }
+ else
+ {
+ /* Make an unnamed tag. */
+ pfnote ((char *)NULL, TRUE,
+ linebuffer->buffer, match, lineno, linecharno);
+ }
+ 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;
+{
+ lineno = 0;
+ charno = 0;
+
+ 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 *
savestr (cp)
char *cp;
return savenstr (cp, strlen (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 *
savenstr (cp, len)
char *cp;
* Return the ptr in sp at which the character c last
* appears; NULL if not found
*
- * Identical to v7 rindex, included for portability.
+ * Identical to System V strrchr, included for portability.
*/
-
char *
-etags_rindex (sp, c)
+etags_strrchr (sp, c)
register char *sp, c;
{
register char *r;
if (*sp == c)
r = sp;
} while (*sp++);
- return (r);
+ return r;
}
* Return the ptr in sp at which the character c first
* appears; NULL if not found
*
- * Identical to v7 index, included for portability.
+ * Identical to System V strchr, included for portability.
*/
-
char *
-etags_index (sp, c)
+etags_strchr (sp, c)
register char *sp, c;
{
do
{
if (*sp == c)
- return (sp);
- } while (*sp++);
- return (NULL);
+ return sp;
+ } while (*sp++);
+ return NULL;
}
/* Print error message and exit. */
-
-/* VARARGS1 */
void
fatal (s1, s2)
char *s1, *s2;
exit (BAD);
}
-/* Print error message. `s1' is printf control string, `s2' is arg for it. */
+void
+pfatal (s1)
+ char *s1;
+{
+ perror (s1);
+ exit (BAD);
+}
+
+void
+suggest_asking_for_help ()
+{
+ fprintf (stderr, "\tTry `%s --help' for a complete list of options.\n",
+ progname);
+ exit (BAD);
+}
-/* VARARGS1 */
+/* Print error message. `s1' is printf control string, `s2' is arg for it. */
void
error (s1, s2)
char *s1, *s2;
fprintf (stderr, "\n");
}
-/* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
-
+/* Return a newly-allocated string whose contents
+ concatenate those of s1, s2, s3. */
char *
concat (s1, s2, s3)
char *s1, *s2, *s3;
strcpy (result, s1);
strcpy (result + len1, s2);
strcpy (result + len1 + len2, s3);
- *(result + len1 + len2 + len3) = 0;
+ result[len1 + len2 + len3] = '\0';
return result;
}
+\f
+/* Does the same work as the system V getcwd, but does not need to
+ guess the buffer size in advance. */
+char *
+etags_getcwd ()
+{
+#ifdef HAVE_GETCWD
+ int bufsize = 200;
+ char *path = xnew (bufsize, char);
-/* Like malloc but get fatal error if memory is exhausted. */
+ while (getcwd (path, bufsize) == NULL)
+ {
+ if (errno != ERANGE)
+ pfatal ("getcwd");
+ bufsize *= 2;
+ path = xnew (bufsize, char);
+ }
+
+#if WINDOWSNT
+ {
+ /* Convert backslashes to slashes. */
+ char *p;
+ for (p = path; *p != '\0'; p++)
+ if (*p == '\\')
+ *p = '/';
+ }
+#endif
+
+ return path;
+
+#else /* not HAVE_GETCWD */
+#ifdef 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 */
+ struct linebuffer path;
+ FILE *pipe;
+
+ initbuffer (&path);
+ pipe = (FILE *) popen ("pwd 2>/dev/null", "r");
+ if (pipe == NULL || readline_internal (&path, pipe) == 0)
+ pfatal ("pwd");
+ pclose (pipe);
+
+ return path.buffer;
+#endif /* not MSDOS */
+#endif /* not HAVE_GETCWD */
+}
+
+/* Return a newly allocated string containing the file name
+ of FILE relative to the absolute directory DIR (which
+ should end with a slash). */
+char *
+relative_filename (file, dir)
+ char *file, *dir;
+{
+ char *fp, *dp, *abs, *res;
+ int i;
+
+ /* Find the common root of file and dir (with a trailing slash). */
+ abs = absolute_filename (file, cwd);
+ fp = abs;
+ dp = dir;
+ while (*fp++ == *dp++)
+ continue;
+ fp--, dp--; /* back to the first differing char */
+ do /* look at the equal chars until '/' */
+ fp--, dp--;
+ while (*fp != '/');
+
+ /* 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 file name relative to the common root of file and dir. */
+ strcat (res, fp + 1);
+ free (abs);
+
+ return res;
+}
+
+/* Return a newly allocated string containing the
+ absolute file name of FILE given CWD (which should
+ end with a slash). */
+char *
+absolute_filename (file, cwd)
+ char *file, *cwd;
+{
+ char *slashp, *cp, *res;
+
+ if (absolutefn (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, "");
+
+ /* Delete the "/dirname/.." and "/." substrings. */
+ slashp = etags_strchr (res, '/');
+ while (slashp != NULL && slashp[0] != '\0')
+ {
+ if (slashp[1] == '.')
+ {
+ if (slashp[2] == '.'
+ && (slashp[3] == '/' || slashp[3] == '\0'))
+ {
+ cp = slashp;
+ do
+ cp--;
+ while (cp >= res && !absolutefn (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;
+ }
+ else if (slashp[2] == '/' || slashp[2] == '\0')
+ {
+ strcpy (slashp, slashp + 2);
+ continue;
+ }
+ }
+
+ slashp = etags_strchr (slashp + 1, '/');
+ }
+
+ if (res[0] == '\0')
+ return savestr ("/");
+ else
+ return res;
+}
+/* Return a newly allocated string containing the absolute
+ file name of dir where FILE resides given CWD (which should
+ end with a slash). */
char *
+absolute_dirname (file, cwd)
+ char *file, *cwd;
+{
+ char *slashp, *res;
+ char save;
+#ifdef DOS_NT
+ char *p;
+
+ for (p = file; *p != '\0'; p++)
+ if (*p == '\\')
+ *p = '/';
+#endif
+
+ slashp = etags_strrchr (file, '/');
+ if (slashp == NULL)
+ return savestr (cwd);
+ save = slashp[1];
+ slashp[1] = '\0';
+ res = absolute_filename (file, cwd);
+ slashp[1] = save;
+
+ return res;
+}
+
+/* Increase the size of a linebuffer. */
+void
+grow_linebuffer (bufp, toksize)
+ struct linebuffer *bufp;
+ int toksize;
+{
+ while (bufp->size < toksize)
+ bufp->size *= 2;
+ bufp->buffer = (char *) xrealloc (bufp->buffer, bufp->size);
+}
+
+/* Like malloc but get fatal error if memory is exhausted. */
+long *
xmalloc (size)
unsigned int size;
{
- char *result = (char *) malloc (size);
+ long *result = (long *) malloc (size);
if (result == NULL)
- fatal ("virtual memory exhausted", 0);
+ fatal ("virtual memory exhausted", (char *)NULL);
return result;
}
-char *
+long *
xrealloc (ptr, size)
char *ptr;
unsigned int size;
{
- char *result = (char *) realloc (ptr, size);
+ long *result = (long *) realloc (ptr, size);
if (result == NULL)
- fatal ("virtual memory exhausted");
+ fatal ("virtual memory exhausted", (char *)NULL);
return result;
}
HCoop / bpt / emacs.git / blobdiff