1 /* Tags file maker to go with GNU Emacs -*- coding: latin-1 -*-
3 Copyright (C) 1984 The Regents of the University of California
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are
8 1. Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 2. Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the
14 3. Neither the name of the University nor the names of its
15 contributors may be used to endorse or promote products derived
16 from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
19 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
22 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 Copyright (C) 1984, 1987, 1988, 1989, 1993, 1994, 1995, 1998, 1999,
32 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
33 Free Software Foundation, Inc.
35 This file is not considered part of GNU Emacs.
37 This program is free software; you can redistribute it and/or modify
38 it under the terms of the GNU General Public License as published by
39 the Free Software Foundation; either version 3, or (at your option)
42 This program is distributed in the hope that it will be useful,
43 but WITHOUT ANY WARRANTY; without even the implied warranty of
44 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
45 GNU General Public License for more details.
47 You should have received a copy of the GNU General Public License
48 along with this program; see the file COPYING. If not, write to the
49 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
50 Boston, MA 02110-1301, USA. */
53 /* NB To comply with the above BSD license, copyright information is
54 reproduced in etc/ETAGS.README. That file should be updated when the
57 To the best of our knowledge, this code was originally based on the
58 ctags.c distributed with BSD4.2, which was copyrighted by the
59 University of California, as described above. */
64 * 1983 Ctags originally by Ken Arnold.
65 * 1984 Fortran added by Jim Kleckner.
66 * 1984 Ed Pelegri-Llopart added C typedefs.
67 * 1985 Emacs TAGS format by Richard Stallman.
68 * 1989 Sam Kendall added C++.
69 * 1992 Joseph B. Wells improved C and C++ parsing.
70 * 1993 Francesco Potortì reorganised C and C++.
71 * 1994 Line-by-line regexp tags by Tom Tromey.
72 * 2001 Nested classes by Francesco Potortì (concept by Mykola Dzyuba).
73 * 2002 #line directives by Francesco Potortì.
75 * Francesco Potortì <pot@gnu.org> has maintained and improved it since 1993.
79 * If you want to add support for a new language, start by looking at the LUA
80 * language, which is the simplest. Alternatively, consider shipping a
81 * configuration file containing regexp definitions for etags.
84 char pot_etags_version
[] = "@(#) pot revision number is 17.26";
94 # define NDEBUG /* disable assert */
99 /* On some systems, Emacs defines static as nothing for the sake
100 of unexec. We don't want that here since we don't use unexec. */
102 # ifndef PTR /* for XEmacs */
105 # ifndef __P /* for XEmacs */
106 # define __P(args) args
108 #else /* no config.h */
109 # if defined(__STDC__) && (__STDC__ || defined(__SUNPRO_C))
110 # define __P(args) args /* use prototypes */
111 # define PTR void * /* for generic pointers */
112 # else /* not standard C */
113 # define __P(args) () /* no prototypes */
114 # define const /* remove const for old compilers' sake */
115 # define PTR long * /* don't use void* */
117 #endif /* !HAVE_CONFIG_H */
120 # define _GNU_SOURCE 1 /* enables some compiler checks on GNU */
123 /* WIN32_NATIVE is for XEmacs.
124 MSDOS, WINDOWSNT, DOS_NT are for Emacs. */
129 #endif /* WIN32_NATIVE */
135 # include <sys/param.h>
137 # ifndef HAVE_CONFIG_H
139 # include <sys/config.h>
151 # define MAXPATHLEN _MAX_PATH
157 # endif /* undef HAVE_GETCWD */
158 #else /* not WINDOWSNT */
162 # else /* no standard C headers */
163 extern char *getenv ();
165 # define EXIT_SUCCESS 1
166 # define EXIT_FAILURE 0
168 # define EXIT_SUCCESS 0
169 # define EXIT_FAILURE 1
172 #endif /* !WINDOWSNT */
177 # if defined (HAVE_GETCWD) && !defined (WINDOWSNT)
178 extern char *getcwd (char *buf
, size_t size
);
180 #endif /* HAVE_UNISTD_H */
188 #include <sys/types.h>
189 #include <sys/stat.h>
193 # undef assert /* some systems have a buggy assert.h */
194 # define assert(x) ((void) 0)
197 #if !defined (S_ISREG) && defined (S_IFREG)
198 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
201 #ifdef NO_LONG_OPTIONS /* define this if you don't have GNU getopt */
202 # define NO_LONG_OPTIONS TRUE
203 # define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr)
205 extern int optind
, opterr
;
207 # define NO_LONG_OPTIONS FALSE
209 #endif /* NO_LONG_OPTIONS */
211 #ifndef HAVE_CONFIG_H /* this is a standalone compilation */
212 # ifdef __CYGWIN__ /* compiling on Cygwin */
214 the regex
.h distributed with Cygwin is
not compatible with etags
, alas
!
215 If you want regular expression support
, you should
delete this notice
and
216 arrange to use the GNU regex
.h
and regex
.c
.
221 /* Define CTAGS to make the program "ctags" compatible with the usual one.
222 Leave it undefined to make the program "etags", which makes emacs-style
223 tag tables and tags typedefs, #defines and struct/union/enum by default. */
231 #define streq(s,t) (assert((s)!=NULL || (t)!=NULL), !strcmp (s, t))
232 #define strcaseeq(s,t) (assert((s)!=NULL && (t)!=NULL), !etags_strcasecmp (s, t))
233 #define strneq(s,t,n) (assert((s)!=NULL || (t)!=NULL), !strncmp (s, t, n))
234 #define strncaseeq(s,t,n) (assert((s)!=NULL && (t)!=NULL), !etags_strncasecmp (s, t, n))
236 #define CHARS 256 /* 2^sizeof(char) */
237 #define CHAR(x) ((unsigned int)(x) & (CHARS - 1))
238 #define iswhite(c) (_wht[CHAR(c)]) /* c is white (see white) */
239 #define notinname(c) (_nin[CHAR(c)]) /* c is not in a name (see nonam) */
240 #define begtoken(c) (_btk[CHAR(c)]) /* c can start token (see begtk) */
241 #define intoken(c) (_itk[CHAR(c)]) /* c can be in token (see midtk) */
242 #define endtoken(c) (_etk[CHAR(c)]) /* c ends tokens (see endtk) */
244 #define ISALNUM(c) isalnum (CHAR(c))
245 #define ISALPHA(c) isalpha (CHAR(c))
246 #define ISDIGIT(c) isdigit (CHAR(c))
247 #define ISLOWER(c) islower (CHAR(c))
249 #define lowcase(c) tolower (CHAR(c))
250 #define upcase(c) toupper (CHAR(c))
254 * xnew, xrnew -- allocate, reallocate storage
256 * SYNOPSIS: Type *xnew (int n, Type);
257 * void xrnew (OldPointer, int n, Type);
260 # include "chkmalloc.h"
261 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
262 (n) * sizeof (Type)))
263 # define xrnew(op,n,Type) ((op) = (Type *) trace_realloc (__FILE__, __LINE__, \
264 (char *) (op), (n) * sizeof (Type)))
266 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
267 # define xrnew(op,n,Type) ((op) = (Type *) xrealloc ( \
268 (char *) (op), (n) * sizeof (Type)))
273 typedef void Lang_function
__P((FILE *));
277 char *suffix
; /* file name suffix for this compressor */
278 char *command
; /* takes one arg and decompresses to stdout */
283 char *name
; /* language name */
284 char *help
; /* detailed help for the language */
285 Lang_function
*function
; /* parse function */
286 char **suffixes
; /* name suffixes of this language's files */
287 char **filenames
; /* names of this language's files */
288 char **interpreters
; /* interpreters for this language */
289 bool metasource
; /* source used to generate other sources */
294 struct fdesc
*next
; /* for the linked list */
295 char *infname
; /* uncompressed input file name */
296 char *infabsname
; /* absolute uncompressed input file name */
297 char *infabsdir
; /* absolute dir of input file */
298 char *taggedfname
; /* file name to write in tagfile */
299 language
*lang
; /* language of file */
300 char *prop
; /* file properties to write in tagfile */
301 bool usecharno
; /* etags tags shall contain char number */
302 bool written
; /* entry written in the tags file */
305 typedef struct node_st
306 { /* sorting structure */
307 struct node_st
*left
, *right
; /* left and right sons */
308 fdesc
*fdp
; /* description of file to whom tag belongs */
309 char *name
; /* tag name */
310 char *regex
; /* search regexp */
311 bool valid
; /* write this tag on the tag file */
312 bool is_func
; /* function tag: use regexp in CTAGS mode */
313 bool been_warned
; /* warning already given for duplicated tag */
314 int lno
; /* line number tag is on */
315 long cno
; /* character number line starts on */
319 * A `linebuffer' is a structure which holds a line of text.
320 * `readline_internal' reads a line from a stream into a linebuffer
321 * and works regardless of the length of the line.
322 * SIZE is the size of BUFFER, LEN is the length of the string in
323 * BUFFER after readline reads it.
332 /* Used to support mixing of --lang and file names. */
336 at_language
, /* a language specification */
337 at_regexp
, /* a regular expression */
338 at_filename
, /* a file name */
339 at_stdin
, /* read from stdin here */
340 at_end
/* stop parsing the list */
341 } arg_type
; /* argument type */
342 language
*lang
; /* language associated with the argument */
343 char *what
; /* the argument itself */
346 /* Structure defining a regular expression. */
347 typedef struct regexp
349 struct regexp
*p_next
; /* pointer to next in list */
350 language
*lang
; /* if set, use only for this language */
351 char *pattern
; /* the regexp pattern */
352 char *name
; /* tag name */
353 struct re_pattern_buffer
*pat
; /* the compiled pattern */
354 struct re_registers regs
; /* re registers */
355 bool error_signaled
; /* already signaled for this regexp */
356 bool force_explicit_name
; /* do not allow implict tag name */
357 bool ignore_case
; /* ignore case when matching */
358 bool multi_line
; /* do a multi-line match on the whole file */
362 /* Many compilers barf on this:
363 Lang_function Ada_funcs;
364 so let's write it this way */
365 static void Ada_funcs
__P((FILE *));
366 static void Asm_labels
__P((FILE *));
367 static void C_entries
__P((int c_ext
, FILE *));
368 static void default_C_entries
__P((FILE *));
369 static void plain_C_entries
__P((FILE *));
370 static void Cjava_entries
__P((FILE *));
371 static void Cobol_paragraphs
__P((FILE *));
372 static void Cplusplus_entries
__P((FILE *));
373 static void Cstar_entries
__P((FILE *));
374 static void Erlang_functions
__P((FILE *));
375 static void Forth_words
__P((FILE *));
376 static void Fortran_functions
__P((FILE *));
377 static void HTML_labels
__P((FILE *));
378 static void Lisp_functions
__P((FILE *));
379 static void Lua_functions
__P((FILE *));
380 static void Makefile_targets
__P((FILE *));
381 static void Pascal_functions
__P((FILE *));
382 static void Perl_functions
__P((FILE *));
383 static void PHP_functions
__P((FILE *));
384 static void PS_functions
__P((FILE *));
385 static void Prolog_functions
__P((FILE *));
386 static void Python_functions
__P((FILE *));
387 static void Scheme_functions
__P((FILE *));
388 static void TeX_commands
__P((FILE *));
389 static void Texinfo_nodes
__P((FILE *));
390 static void Yacc_entries
__P((FILE *));
391 static void just_read_file
__P((FILE *));
393 static void print_language_names
__P((void));
394 static void print_version
__P((void));
395 static void print_help
__P((argument
*));
396 int main
__P((int, char **));
398 static compressor
*get_compressor_from_suffix
__P((char *, char **));
399 static language
*get_language_from_langname
__P((const char *));
400 static language
*get_language_from_interpreter
__P((char *));
401 static language
*get_language_from_filename
__P((char *, bool));
402 static void readline
__P((linebuffer
*, FILE *));
403 static long readline_internal
__P((linebuffer
*, FILE *));
404 static bool nocase_tail
__P((char *));
405 static void get_tag
__P((char *, char **));
407 static void analyse_regex
__P((char *));
408 static void free_regexps
__P((void));
409 static void regex_tag_multiline
__P((void));
410 static void error
__P((const char *, const char *));
411 static void suggest_asking_for_help
__P((void));
412 void fatal
__P((char *, char *));
413 static void pfatal
__P((char *));
414 static void add_node
__P((node
*, node
**));
416 static void init
__P((void));
417 static void process_file_name
__P((char *, language
*));
418 static void process_file
__P((FILE *, char *, language
*));
419 static void find_entries
__P((FILE *));
420 static void free_tree
__P((node
*));
421 static void free_fdesc
__P((fdesc
*));
422 static void pfnote
__P((char *, bool, char *, int, int, long));
423 static void make_tag
__P((char *, int, bool, char *, int, int, long));
424 static void invalidate_nodes
__P((fdesc
*, node
**));
425 static void put_entries
__P((node
*));
427 static char *concat
__P((char *, char *, char *));
428 static char *skip_spaces
__P((char *));
429 static char *skip_non_spaces
__P((char *));
430 static char *savenstr
__P((char *, int));
431 static char *savestr
__P((char *));
432 static char *etags_strchr
__P((const char *, int));
433 static char *etags_strrchr
__P((const char *, int));
434 static int etags_strcasecmp
__P((const char *, const char *));
435 static int etags_strncasecmp
__P((const char *, const char *, int));
436 static char *etags_getcwd
__P((void));
437 static char *relative_filename
__P((char *, char *));
438 static char *absolute_filename
__P((char *, char *));
439 static char *absolute_dirname
__P((char *, char *));
440 static bool filename_is_absolute
__P((char *f
));
441 static void canonicalize_filename
__P((char *));
442 static void linebuffer_init
__P((linebuffer
*));
443 static void linebuffer_setlen
__P((linebuffer
*, int));
444 static PTR xmalloc
__P((unsigned int));
445 static PTR xrealloc
__P((char *, unsigned int));
448 static char searchar
= '/'; /* use /.../ searches */
450 static char *tagfile
; /* output file */
451 static char *progname
; /* name this program was invoked with */
452 static char *cwd
; /* current working directory */
453 static char *tagfiledir
; /* directory of tagfile */
454 static FILE *tagf
; /* ioptr for tags file */
456 static fdesc
*fdhead
; /* head of file description list */
457 static fdesc
*curfdp
; /* current file description */
458 static int lineno
; /* line number of current line */
459 static long charno
; /* current character number */
460 static long linecharno
; /* charno of start of current line */
461 static char *dbp
; /* pointer to start of current tag */
463 static const int invalidcharno
= -1;
465 static node
*nodehead
; /* the head of the binary tree of tags */
466 static node
*last_node
; /* the last node created */
468 static linebuffer lb
; /* the current line */
469 static linebuffer filebuf
; /* a buffer containing the whole file */
470 static linebuffer token_name
; /* a buffer containing a tag name */
472 /* boolean "functions" (see init) */
473 static bool _wht
[CHARS
], _nin
[CHARS
], _itk
[CHARS
], _btk
[CHARS
], _etk
[CHARS
];
476 *white
= " \f\t\n\r\v",
478 *nonam
= " \f\t\n\r()=,;", /* look at make_tag before modifying! */
479 /* token ending chars */
480 *endtk
= " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?",
481 /* token starting chars */
482 *begtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
483 /* valid in-token chars */
484 *midtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
486 static bool append_to_tagfile
; /* -a: append to tags */
487 /* The next four default to TRUE for etags, but to FALSE for ctags. */
488 static bool typedefs
; /* -t: create tags for C and Ada typedefs */
489 static bool typedefs_or_cplusplus
; /* -T: create tags for C typedefs, level */
490 /* 0 struct/enum/union decls, and C++ */
491 /* member functions. */
492 static bool constantypedefs
; /* -d: create tags for C #define, enum */
493 /* constants and variables. */
494 /* -D: opposite of -d. Default under ctags. */
495 static bool globals
; /* create tags for global variables */
496 static bool members
; /* create tags for C member variables */
497 static bool declarations
; /* --declarations: tag them and extern in C&Co*/
498 static bool no_line_directive
; /* ignore #line directives (undocumented) */
499 static bool no_duplicates
; /* no duplicate tags for ctags (undocumented) */
500 static bool update
; /* -u: update tags */
501 static bool vgrind_style
; /* -v: create vgrind style index output */
502 static bool no_warnings
; /* -w: suppress warnings (undocumented) */
503 static bool cxref_style
; /* -x: create cxref style output */
504 static bool cplusplus
; /* .[hc] means C++, not C (undocumented) */
505 static bool ignoreindent
; /* -I: ignore indentation in C */
506 static bool packages_only
; /* --packages-only: in Ada, only tag packages*/
508 /* STDIN is defined in LynxOS system headers */
513 #define STDIN 0x1001 /* returned by getopt_long on --parse-stdin */
514 static bool parsing_stdin
; /* --parse-stdin used */
516 static regexp
*p_head
; /* list of all regexps */
517 static bool need_filebuf
; /* some regexes are multi-line */
519 static struct option longopts
[] =
521 { "append", no_argument
, NULL
, 'a' },
522 { "packages-only", no_argument
, &packages_only
, TRUE
},
523 { "c++", no_argument
, NULL
, 'C' },
524 { "declarations", no_argument
, &declarations
, TRUE
},
525 { "no-line-directive", no_argument
, &no_line_directive
, TRUE
},
526 { "no-duplicates", no_argument
, &no_duplicates
, TRUE
},
527 { "help", no_argument
, NULL
, 'h' },
528 { "help", no_argument
, NULL
, 'H' },
529 { "ignore-indentation", no_argument
, NULL
, 'I' },
530 { "language", required_argument
, NULL
, 'l' },
531 { "members", no_argument
, &members
, TRUE
},
532 { "no-members", no_argument
, &members
, FALSE
},
533 { "output", required_argument
, NULL
, 'o' },
534 { "regex", required_argument
, NULL
, 'r' },
535 { "no-regex", no_argument
, NULL
, 'R' },
536 { "ignore-case-regex", required_argument
, NULL
, 'c' },
537 { "parse-stdin", required_argument
, NULL
, STDIN
},
538 { "version", no_argument
, NULL
, 'V' },
540 #if CTAGS /* Ctags options */
541 { "backward-search", no_argument
, NULL
, 'B' },
542 { "cxref", no_argument
, NULL
, 'x' },
543 { "defines", no_argument
, NULL
, 'd' },
544 { "globals", no_argument
, &globals
, TRUE
},
545 { "typedefs", no_argument
, NULL
, 't' },
546 { "typedefs-and-c++", no_argument
, NULL
, 'T' },
547 { "update", no_argument
, NULL
, 'u' },
548 { "vgrind", no_argument
, NULL
, 'v' },
549 { "no-warn", no_argument
, NULL
, 'w' },
551 #else /* Etags options */
552 { "no-defines", no_argument
, NULL
, 'D' },
553 { "no-globals", no_argument
, &globals
, FALSE
},
554 { "include", required_argument
, NULL
, 'i' },
559 static compressor compressors
[] =
561 { "z", "gzip -d -c"},
562 { "Z", "gzip -d -c"},
563 { "gz", "gzip -d -c"},
564 { "GZ", "gzip -d -c"},
565 { "bz2", "bzip2 -d -c" },
574 static char *Ada_suffixes
[] =
575 { "ads", "adb", "ada", NULL
};
576 static char Ada_help
[] =
577 "In Ada code, functions, procedures, packages, tasks and types are\n\
578 tags. Use the `--packages-only' option to create tags for\n\
580 Ada tag names have suffixes indicating the type of entity:\n\
581 Entity type: Qualifier:\n\
582 ------------ ----------\n\
589 Thus, `M-x find-tag <RET> bidule/b <RET>' will go directly to the\n\
590 body of the package `bidule', while `M-x find-tag <RET> bidule <RET>'\n\
591 will just search for any tag `bidule'.";
594 static char *Asm_suffixes
[] =
595 { "a", /* Unix assembler */
596 "asm", /* Microcontroller assembly */
597 "def", /* BSO/Tasking definition includes */
598 "inc", /* Microcontroller include files */
599 "ins", /* Microcontroller include files */
600 "s", "sa", /* Unix assembler */
601 "S", /* cpp-processed Unix assembler */
602 "src", /* BSO/Tasking C compiler output */
605 static char Asm_help
[] =
606 "In assembler code, labels appearing at the beginning of a line,\n\
607 followed by a colon, are tags.";
610 /* Note that .c and .h can be considered C++, if the --c++ flag was
611 given, or if the `class' or `template' keywords are met inside the file.
612 That is why default_C_entries is called for these. */
613 static char *default_C_suffixes
[] =
615 #if CTAGS /* C help for Ctags */
616 static char default_C_help
[] =
617 "In C code, any C function is a tag. Use -t to tag typedefs.\n\
618 Use -T to tag definitions of `struct', `union' and `enum'.\n\
619 Use -d to tag `#define' macro definitions and `enum' constants.\n\
620 Use --globals to tag global variables.\n\
621 You can tag function declarations and external variables by\n\
622 using `--declarations', and struct members by using `--members'.";
623 #else /* C help for Etags */
624 static char default_C_help
[] =
625 "In C code, any C function or typedef is a tag, and so are\n\
626 definitions of `struct', `union' and `enum'. `#define' macro\n\
627 definitions and `enum' constants are tags unless you specify\n\
628 `--no-defines'. Global variables are tags unless you specify\n\
629 `--no-globals'. Use of `--no-globals' and `--no-defines'\n\
630 can make the tags table file much smaller.\n\
631 You can tag function declarations and external variables by\n\
632 using `--declarations', and struct members by using `--members'.";
633 #endif /* C help for Ctags and Etags */
635 static char *Cplusplus_suffixes
[] =
636 { "C", "c++", "cc", "cpp", "cxx", "H", "h++", "hh", "hpp", "hxx",
637 "M", /* Objective C++ */
638 "pdb", /* Postscript with C syntax */
640 static char Cplusplus_help
[] =
641 "In C++ code, all the tag constructs of C code are tagged. (Use\n\
642 --help --lang=c --lang=c++ for full help.)\n\
643 In addition to C tags, member functions are also recognized. Member\n\
644 variables are also recognized if you use the `--members' option.\n\
645 Tags for variables and functions in classes are named `CLASS::VARIABLE'\n\
646 and `CLASS::FUNCTION'. `operator' definitions have tag names like\n\
649 static char *Cjava_suffixes
[] =
651 static char Cjava_help
[] =
652 "In Java code, all the tags constructs of C and C++ code are\n\
653 tagged. (Use --help --lang=c --lang=c++ --lang=java for full help.)";
656 static char *Cobol_suffixes
[] =
657 { "COB", "cob", NULL
};
658 static char Cobol_help
[] =
659 "In Cobol code, tags are paragraph names; that is, any word\n\
660 starting in column 8 and followed by a period.";
662 static char *Cstar_suffixes
[] =
663 { "cs", "hs", NULL
};
665 static char *Erlang_suffixes
[] =
666 { "erl", "hrl", NULL
};
667 static char Erlang_help
[] =
668 "In Erlang code, the tags are the functions, records and macros\n\
669 defined in the file.";
671 char *Forth_suffixes
[] =
672 { "fth", "tok", NULL
};
673 static char Forth_help
[] =
674 "In Forth code, tags are words defined by `:',\n\
675 constant, code, create, defer, value, variable, buffer:, field.";
677 static char *Fortran_suffixes
[] =
678 { "F", "f", "f90", "for", NULL
};
679 static char Fortran_help
[] =
680 "In Fortran code, functions, subroutines and block data are tags.";
682 static char *HTML_suffixes
[] =
683 { "htm", "html", "shtml", NULL
};
684 static char HTML_help
[] =
685 "In HTML input files, the tags are the `title' and the `h1', `h2',\n\
686 `h3' headers. Also, tags are `name=' in anchors and all\n\
687 occurrences of `id='.";
689 static char *Lisp_suffixes
[] =
690 { "cl", "clisp", "el", "l", "lisp", "LSP", "lsp", "ml", NULL
};
691 static char Lisp_help
[] =
692 "In Lisp code, any function defined with `defun', any variable\n\
693 defined with `defvar' or `defconst', and in general the first\n\
694 argument of any expression that starts with `(def' in column zero\n\
697 static char *Lua_suffixes
[] =
698 { "lua", "LUA", NULL
};
699 static char Lua_help
[] =
700 "In Lua scripts, all functions are tags.";
702 static char *Makefile_filenames
[] =
703 { "Makefile", "makefile", "GNUMakefile", "Makefile.in", "Makefile.am", NULL
};
704 static char Makefile_help
[] =
705 "In makefiles, targets are tags; additionally, variables are tags\n\
706 unless you specify `--no-globals'.";
708 static char *Objc_suffixes
[] =
709 { "lm", /* Objective lex file */
710 "m", /* Objective C file */
712 static char Objc_help
[] =
713 "In Objective C code, tags include Objective C definitions for classes,\n\
714 class categories, methods and protocols. Tags for variables and\n\
715 functions in classes are named `CLASS::VARIABLE' and `CLASS::FUNCTION'.\n\
716 (Use --help --lang=c --lang=objc --lang=java for full help.)";
718 static char *Pascal_suffixes
[] =
719 { "p", "pas", NULL
};
720 static char Pascal_help
[] =
721 "In Pascal code, the tags are the functions and procedures defined\n\
723 /* " // this is for working around an Emacs highlighting bug... */
725 static char *Perl_suffixes
[] =
726 { "pl", "pm", NULL
};
727 static char *Perl_interpreters
[] =
728 { "perl", "@PERL@", NULL
};
729 static char Perl_help
[] =
730 "In Perl code, the tags are the packages, subroutines and variables\n\
731 defined by the `package', `sub', `my' and `local' keywords. Use\n\
732 `--globals' if you want to tag global variables. Tags for\n\
733 subroutines are named `PACKAGE::SUB'. The name for subroutines\n\
734 defined in the default package is `main::SUB'.";
736 static char *PHP_suffixes
[] =
737 { "php", "php3", "php4", NULL
};
738 static char PHP_help
[] =
739 "In PHP code, tags are functions, classes and defines. When using\n\
740 the `--members' option, vars are tags too.";
742 static char *plain_C_suffixes
[] =
743 { "pc", /* Pro*C file */
746 static char *PS_suffixes
[] =
747 { "ps", "psw", NULL
}; /* .psw is for PSWrap */
748 static char PS_help
[] =
749 "In PostScript code, the tags are the functions.";
751 static char *Prolog_suffixes
[] =
753 static char Prolog_help
[] =
754 "In Prolog code, tags are predicates and rules at the beginning of\n\
757 static char *Python_suffixes
[] =
759 static char Python_help
[] =
760 "In Python code, `def' or `class' at the beginning of a line\n\
763 /* Can't do the `SCM' or `scm' prefix with a version number. */
764 static char *Scheme_suffixes
[] =
765 { "oak", "sch", "scheme", "SCM", "scm", "SM", "sm", "ss", "t", NULL
};
766 static char Scheme_help
[] =
767 "In Scheme code, tags include anything defined with `def' or with a\n\
768 construct whose name starts with `def'. They also include\n\
769 variables set with `set!' at top level in the file.";
771 static char *TeX_suffixes
[] =
772 { "bib", "clo", "cls", "ltx", "sty", "TeX", "tex", NULL
};
773 static char TeX_help
[] =
774 "In LaTeX text, the argument of any of the commands `\\chapter',\n\
775 `\\section', `\\subsection', `\\subsubsection', `\\eqno', `\\label',\n\
776 `\\ref', `\\cite', `\\bibitem', `\\part', `\\appendix', `\\entry',\n\
777 `\\index', `\\def', `\\newcommand', `\\renewcommand',\n\
778 `\\newenvironment' or `\\renewenvironment' is a tag.\n\
780 Other commands can be specified by setting the environment variable\n\
781 `TEXTAGS' to a colon-separated list like, for example,\n\
782 TEXTAGS=\"mycommand:myothercommand\".";
785 static char *Texinfo_suffixes
[] =
786 { "texi", "texinfo", "txi", NULL
};
787 static char Texinfo_help
[] =
788 "for texinfo files, lines starting with @node are tagged.";
790 static char *Yacc_suffixes
[] =
791 { "y", "y++", "ym", "yxx", "yy", NULL
}; /* .ym is Objective yacc file */
792 static char Yacc_help
[] =
793 "In Bison or Yacc input files, each rule defines as a tag the\n\
794 nonterminal it constructs. The portions of the file that contain\n\
795 C code are parsed as C code (use --help --lang=c --lang=yacc\n\
798 static char auto_help
[] =
799 "`auto' is not a real language, it indicates to use\n\
800 a default language for files base on file name suffix and file contents.";
802 static char none_help
[] =
803 "`none' is not a real language, it indicates to only do\n\
804 regexp processing on files.";
806 static char no_lang_help
[] =
807 "No detailed help available for this language.";
811 * Table of languages.
813 * It is ok for a given function to be listed under more than one
814 * name. I just didn't.
817 static language lang_names
[] =
819 { "ada", Ada_help
, Ada_funcs
, Ada_suffixes
},
820 { "asm", Asm_help
, Asm_labels
, Asm_suffixes
},
821 { "c", default_C_help
, default_C_entries
, default_C_suffixes
},
822 { "c++", Cplusplus_help
, Cplusplus_entries
, Cplusplus_suffixes
},
823 { "c*", no_lang_help
, Cstar_entries
, Cstar_suffixes
},
824 { "cobol", Cobol_help
, Cobol_paragraphs
, Cobol_suffixes
},
825 { "erlang", Erlang_help
, Erlang_functions
, Erlang_suffixes
},
826 { "forth", Forth_help
, Forth_words
, Forth_suffixes
},
827 { "fortran", Fortran_help
, Fortran_functions
, Fortran_suffixes
},
828 { "html", HTML_help
, HTML_labels
, HTML_suffixes
},
829 { "java", Cjava_help
, Cjava_entries
, Cjava_suffixes
},
830 { "lisp", Lisp_help
, Lisp_functions
, Lisp_suffixes
},
831 { "lua", Lua_help
, Lua_functions
, Lua_suffixes
},
832 { "makefile", Makefile_help
,Makefile_targets
,NULL
,Makefile_filenames
},
833 { "objc", Objc_help
, plain_C_entries
, Objc_suffixes
},
834 { "pascal", Pascal_help
, Pascal_functions
, Pascal_suffixes
},
835 { "perl",Perl_help
,Perl_functions
,Perl_suffixes
,NULL
,Perl_interpreters
},
836 { "php", PHP_help
, PHP_functions
, PHP_suffixes
},
837 { "postscript",PS_help
, PS_functions
, PS_suffixes
},
838 { "proc", no_lang_help
, plain_C_entries
, plain_C_suffixes
},
839 { "prolog", Prolog_help
, Prolog_functions
, Prolog_suffixes
},
840 { "python", Python_help
, Python_functions
, Python_suffixes
},
841 { "scheme", Scheme_help
, Scheme_functions
, Scheme_suffixes
},
842 { "tex", TeX_help
, TeX_commands
, TeX_suffixes
},
843 { "texinfo", Texinfo_help
, Texinfo_nodes
, Texinfo_suffixes
},
844 { "yacc", Yacc_help
,Yacc_entries
,Yacc_suffixes
,NULL
,NULL
,TRUE
},
845 { "auto", auto_help
}, /* default guessing scheme */
846 { "none", none_help
, just_read_file
}, /* regexp matching only */
847 { NULL
} /* end of list */
852 print_language_names ()
857 puts ("\nThese are the currently supported languages, along with the\n\
858 default file names and dot suffixes:");
859 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
861 printf (" %-*s", 10, lang
->name
);
862 if (lang
->filenames
!= NULL
)
863 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
864 printf (" %s", *name
);
865 if (lang
->suffixes
!= NULL
)
866 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
867 printf (" .%s", *ext
);
870 puts ("where `auto' means use default language for files based on file\n\
871 name suffix, and `none' means only do regexp processing on files.\n\
872 If no language is specified and no matching suffix is found,\n\
873 the first line of the file is read for a sharp-bang (#!) sequence\n\
874 followed by the name of an interpreter. If no such sequence is found,\n\
875 Fortran is tried first; if no tags are found, C is tried next.\n\
876 When parsing any C file, a \"class\" or \"template\" keyword\n\
878 puts ("Compressed files are supported using gzip and bzip2.\n\
880 For detailed help on a given language use, for example,\n\
881 etags --help --lang=ada.");
885 # define EMACS_NAME "standalone"
888 # define VERSION "17.26"
893 printf ("%s (%s %s)\n", (CTAGS
) ? "ctags" : "etags", EMACS_NAME
, VERSION
);
894 puts ("Copyright (C) 2008 Free Software Foundation, Inc.");
895 puts ("This program is distributed under the terms in ETAGS.README");
901 print_help (argbuffer
)
904 bool help_for_lang
= FALSE
;
906 for (; argbuffer
->arg_type
!= at_end
; argbuffer
++)
907 if (argbuffer
->arg_type
== at_language
)
911 puts (argbuffer
->lang
->help
);
912 help_for_lang
= TRUE
;
918 printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\
920 These are the options accepted by %s.\n", progname
, progname
);
922 puts ("WARNING: long option names do not work with this executable,\n\
923 as it is not linked with GNU getopt.");
925 puts ("You may use unambiguous abbreviations for the long option names.");
926 puts (" A - as file name means read names from stdin (one per line).\n\
927 Absolute names are stored in the output file as they are.\n\
928 Relative ones are stored relative to the output file's directory.\n");
930 puts ("-a, --append\n\
931 Append tag entries to existing tags file.");
933 puts ("--packages-only\n\
934 For Ada files, only generate tags for packages.");
937 puts ("-B, --backward-search\n\
938 Write the search commands for the tag entries using '?', the\n\
939 backward-search command instead of '/', the forward-search command.");
941 /* This option is mostly obsolete, because etags can now automatically
942 detect C++. Retained for backward compatibility and for debugging and
943 experimentation. In principle, we could want to tag as C++ even
944 before any "class" or "template" keyword.
946 Treat files whose name suffix defaults to C language as C++ files.");
949 puts ("--declarations\n\
950 In C and derived languages, create tags for function declarations,");
952 puts ("\tand create tags for extern variables if --globals is used.");
955 ("\tand create tags for extern variables unless --no-globals is used.");
958 puts ("-d, --defines\n\
959 Create tag entries for C #define constants and enum constants, too.");
961 puts ("-D, --no-defines\n\
962 Don't create tag entries for C #define constants and enum constants.\n\
963 This makes the tags file smaller.");
966 puts ("-i FILE, --include=FILE\n\
967 Include a note in tag file indicating that, when searching for\n\
968 a tag, one should also consult the tags file FILE after\n\
969 checking the current file.");
971 puts ("-l LANG, --language=LANG\n\
972 Force the following files to be considered as written in the\n\
973 named language up to the next --language=LANG option.");
977 Create tag entries for global variables in some languages.");
979 puts ("--no-globals\n\
980 Do not create tag entries for global variables in some\n\
981 languages. This makes the tags file smaller.");
983 Create tag entries for members of structures in some languages.");
985 puts ("-r REGEXP, --regex=REGEXP or --regex=@regexfile\n\
986 Make a tag for each line matching a regular expression pattern\n\
987 in the following files. {LANGUAGE}REGEXP uses REGEXP for LANGUAGE\n\
988 files only. REGEXFILE is a file containing one REGEXP per line.\n\
989 REGEXP takes the form /TAGREGEXP/TAGNAME/MODS, where TAGNAME/ is\n\
990 optional. The TAGREGEXP pattern is anchored (as if preceded by ^).");
991 puts (" If TAGNAME/ is present, the tags created are named.\n\
992 For example Tcl named tags can be created with:\n\
993 --regex=\"/proc[ \\t]+\\([^ \\t]+\\)/\\1/.\".\n\
994 MODS are optional one-letter modifiers: `i' means to ignore case,\n\
995 `m' means to allow multi-line matches, `s' implies `m' and\n\
996 causes dot to match any character, including newline.");
997 puts ("-R, --no-regex\n\
998 Don't create tags from regexps for the following files.");
999 puts ("-I, --ignore-indentation\n\
1000 In C and C++ do not assume that a closing brace in the first\n\
1001 column is the final brace of a function or structure definition.");
1002 puts ("-o FILE, --output=FILE\n\
1003 Write the tags to FILE.");
1004 puts ("--parse-stdin=NAME\n\
1005 Read from standard input and record tags as belonging to file NAME.");
1009 puts ("-t, --typedefs\n\
1010 Generate tag entries for C and Ada typedefs.");
1011 puts ("-T, --typedefs-and-c++\n\
1012 Generate tag entries for C typedefs, C struct/enum/union tags,\n\
1013 and C++ member functions.");
1017 puts ("-u, --update\n\
1018 Update the tag entries for the given files, leaving tag\n\
1019 entries for other files in place. Currently, this is\n\
1020 implemented by deleting the existing entries for the given\n\
1021 files and then rewriting the new entries at the end of the\n\
1022 tags file. It is often faster to simply rebuild the entire\n\
1023 tag file than to use this.");
1027 puts ("-v, --vgrind\n\
1028 Print on the standard output an index of items intended for\n\
1029 human consumption, similar to the output of vgrind. The index\n\
1030 is sorted, and gives the page number of each item.");
1031 # if PRINT_UNDOCUMENTED_OPTIONS_HELP
1032 puts ("-w, --no-duplicates\n\
1033 Do not create duplicate tag entries, for compatibility with\n\
1034 traditional ctags.");
1035 puts ("-w, --no-warn\n\
1036 Suppress warning messages about duplicate tag entries.");
1037 # endif /* PRINT_UNDOCUMENTED_OPTIONS_HELP */
1038 puts ("-x, --cxref\n\
1039 Like --vgrind, but in the style of cxref, rather than vgrind.\n\
1040 The output uses line numbers instead of page numbers, but\n\
1041 beyond that the differences are cosmetic; try both to see\n\
1045 puts ("-V, --version\n\
1046 Print the version of the program.\n\
1048 Print this help message.\n\
1049 Followed by one or more `--language' options prints detailed\n\
1050 help about tag generation for the specified languages.");
1052 print_language_names ();
1055 puts ("Report bugs to bug-gnu-emacs@gnu.org");
1057 exit (EXIT_SUCCESS
);
1061 #ifdef VMS /* VMS specific functions */
1065 /* This is a BUG! ANY arbitrary limit is a BUG!
1066 Won't someone please fix this? */
1067 #define MAX_FILE_SPEC_LEN 255
1070 char body
[MAX_FILE_SPEC_LEN
+ 1];
1074 v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
1075 returning in each successive call the next file name matching the input
1076 spec. The function expects that each in_spec passed
1077 to it will be processed to completion; in particular, up to and
1078 including the call following that in which the last matching name
1079 is returned, the function ignores the value of in_spec, and will
1080 only start processing a new spec with the following call.
1081 If an error occurs, on return out_spec contains the value
1082 of in_spec when the error occurred.
1084 With each successive file name returned in out_spec, the
1085 function's return value is one. When there are no more matching
1086 names the function returns zero. If on the first call no file
1087 matches in_spec, or there is any other error, -1 is returned.
1091 #include <descrip.h>
1092 #define OUTSIZE MAX_FILE_SPEC_LEN
1098 static long context
= 0;
1099 static struct dsc$descriptor_s o
;
1100 static struct dsc$descriptor_s i
;
1101 static bool pass1
= TRUE
;
1108 o
.dsc$a_pointer
= (char *) out
;
1109 o
.dsc$w_length
= (short)OUTSIZE
;
1110 i
.dsc$a_pointer
= in
;
1111 i
.dsc$w_length
= (short)strlen(in
);
1112 i
.dsc$b_dtype
= DSC$K_DTYPE_T
;
1113 i
.dsc$b_class
= DSC$K_CLASS_S
;
1114 o
.dsc$b_dtype
= DSC$K_DTYPE_VT
;
1115 o
.dsc$b_class
= DSC$K_CLASS_VS
;
1117 if ((status
= lib$
find_file(&i
, &o
, &context
, 0, 0)) == RMS$_NORMAL
)
1119 out
->body
[out
->curlen
] = EOS
;
1122 else if (status
== RMS$_NMF
)
1126 strcpy(out
->body
, in
);
1129 lib$
find_file_end(&context
);
1135 v1.01 nmm 19-Aug-85 gfnames - return in successive calls the
1136 name of each file specified by the provided arg expanding wildcards.
1139 gfnames (arg
, p_error
)
1143 static vspec filename
= {MAX_FILE_SPEC_LEN
, "\0"};
1145 switch (fn_exp (&filename
, arg
))
1149 return filename
.body
;
1155 return filename
.body
;
1159 #ifndef OLD /* Newer versions of VMS do provide `system'. */
1163 error ("%s", "system() function not implemented under VMS");
1167 #define VERSION_DELIM ';'
1168 char *massage_name (s
)
1174 if (*s
== VERSION_DELIM
)
1192 unsigned int nincluded_files
;
1193 char **included_files
;
1194 argument
*argbuffer
;
1195 int current_arg
, file_count
;
1196 linebuffer filename_lb
;
1197 bool help_asked
= FALSE
;
1206 _fmode
= O_BINARY
; /* all of files are treated as binary files */
1210 nincluded_files
= 0;
1211 included_files
= xnew (argc
, char *);
1215 /* Allocate enough no matter what happens. Overkill, but each one
1217 argbuffer
= xnew (argc
, argument
);
1220 * If etags, always find typedefs and structure tags. Why not?
1221 * Also default to find macro constants, enum constants and
1226 typedefs
= typedefs_or_cplusplus
= constantypedefs
= TRUE
;
1230 /* When the optstring begins with a '-' getopt_long does not rearrange the
1231 non-options arguments to be at the end, but leaves them alone. */
1232 optstring
= concat (NO_LONG_OPTIONS
? "" : "-",
1233 "ac:Cf:Il:o:r:RSVhH",
1234 (CTAGS
) ? "BxdtTuvw" : "Di:");
1236 while ((opt
= getopt_long (argc
, argv
, optstring
, longopts
, NULL
)) != EOF
)
1240 /* If getopt returns 0, then it has already processed a
1241 long-named option. We should do nothing. */
1245 /* This means that a file name has been seen. Record it. */
1246 argbuffer
[current_arg
].arg_type
= at_filename
;
1247 argbuffer
[current_arg
].what
= optarg
;
1253 /* Parse standard input. Idea by Vivek <vivek@etla.org>. */
1254 argbuffer
[current_arg
].arg_type
= at_stdin
;
1255 argbuffer
[current_arg
].what
= optarg
;
1259 fatal ("cannot parse standard input more than once", (char *)NULL
);
1260 parsing_stdin
= TRUE
;
1263 /* Common options. */
1264 case 'a': append_to_tagfile
= TRUE
; break;
1265 case 'C': cplusplus
= TRUE
; break;
1266 case 'f': /* for compatibility with old makefiles */
1270 error ("-o option may only be given once.", (char *)NULL
);
1271 suggest_asking_for_help ();
1277 case 'S': /* for backward compatibility */
1278 ignoreindent
= TRUE
;
1282 language
*lang
= get_language_from_langname (optarg
);
1285 argbuffer
[current_arg
].lang
= lang
;
1286 argbuffer
[current_arg
].arg_type
= at_language
;
1292 /* Backward compatibility: support obsolete --ignore-case-regexp. */
1293 optarg
= concat (optarg
, "i", ""); /* memory leak here */
1296 argbuffer
[current_arg
].arg_type
= at_regexp
;
1297 argbuffer
[current_arg
].what
= optarg
;
1301 argbuffer
[current_arg
].arg_type
= at_regexp
;
1302 argbuffer
[current_arg
].what
= NULL
;
1314 case 'D': constantypedefs
= FALSE
; break;
1315 case 'i': included_files
[nincluded_files
++] = optarg
; break;
1317 /* Ctags options. */
1318 case 'B': searchar
= '?'; break;
1319 case 'd': constantypedefs
= TRUE
; break;
1320 case 't': typedefs
= TRUE
; break;
1321 case 'T': typedefs
= typedefs_or_cplusplus
= TRUE
; break;
1322 case 'u': update
= TRUE
; break;
1323 case 'v': vgrind_style
= TRUE
; /*FALLTHRU*/
1324 case 'x': cxref_style
= TRUE
; break;
1325 case 'w': no_warnings
= TRUE
; break;
1327 suggest_asking_for_help ();
1331 /* No more options. Store the rest of arguments. */
1332 for (; optind
< argc
; optind
++)
1334 argbuffer
[current_arg
].arg_type
= at_filename
;
1335 argbuffer
[current_arg
].what
= argv
[optind
];
1340 argbuffer
[current_arg
].arg_type
= at_end
;
1343 print_help (argbuffer
);
1346 if (nincluded_files
== 0 && file_count
== 0)
1348 error ("no input files specified.", (char *)NULL
);
1349 suggest_asking_for_help ();
1353 if (tagfile
== NULL
)
1354 tagfile
= CTAGS
? "tags" : "TAGS";
1355 cwd
= etags_getcwd (); /* the current working directory */
1356 if (cwd
[strlen (cwd
) - 1] != '/')
1359 cwd
= concat (oldcwd
, "/", "");
1362 /* Relative file names are made relative to the current directory. */
1363 if (streq (tagfile
, "-")
1364 || strneq (tagfile
, "/dev/", 5))
1367 tagfiledir
= absolute_dirname (tagfile
, cwd
);
1369 init (); /* set up boolean "functions" */
1371 linebuffer_init (&lb
);
1372 linebuffer_init (&filename_lb
);
1373 linebuffer_init (&filebuf
);
1374 linebuffer_init (&token_name
);
1378 if (streq (tagfile
, "-"))
1382 /* Switch redirected `stdout' to binary mode (setting `_fmode'
1383 doesn't take effect until after `stdout' is already open). */
1384 if (!isatty (fileno (stdout
)))
1385 setmode (fileno (stdout
), O_BINARY
);
1389 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1395 * Loop through files finding functions.
1397 for (i
= 0; i
< current_arg
; i
++)
1399 static language
*lang
; /* non-NULL if language is forced */
1402 switch (argbuffer
[i
].arg_type
)
1405 lang
= argbuffer
[i
].lang
;
1408 analyse_regex (argbuffer
[i
].what
);
1412 while ((this_file
= gfnames (argbuffer
[i
].what
, &got_err
)) != NULL
)
1416 error ("can't find file %s\n", this_file
);
1421 this_file
= massage_name (this_file
);
1424 this_file
= argbuffer
[i
].what
;
1426 /* Input file named "-" means read file names from stdin
1427 (one per line) and use them. */
1428 if (streq (this_file
, "-"))
1431 fatal ("cannot parse standard input AND read file names from it",
1433 while (readline_internal (&filename_lb
, stdin
) > 0)
1434 process_file_name (filename_lb
.buffer
, lang
);
1437 process_file_name (this_file
, lang
);
1443 this_file
= argbuffer
[i
].what
;
1444 process_file (stdin
, this_file
, lang
);
1451 free (filebuf
.buffer
);
1452 free (token_name
.buffer
);
1454 if (!CTAGS
|| cxref_style
)
1456 /* Write the remaining tags to tagf (ETAGS) or stdout (CXREF). */
1457 put_entries (nodehead
);
1458 free_tree (nodehead
);
1464 /* Output file entries that have no tags. */
1465 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1467 fprintf (tagf
, "\f\n%s,0\n", fdp
->taggedfname
);
1469 while (nincluded_files
-- > 0)
1470 fprintf (tagf
, "\f\n%s,include\n", *included_files
++);
1472 if (fclose (tagf
) == EOF
)
1476 exit (EXIT_SUCCESS
);
1479 /* From here on, we are in (CTAGS && !cxref_style) */
1483 for (i
= 0; i
< current_arg
; ++i
)
1485 switch (argbuffer
[i
].arg_type
)
1491 continue; /* the for loop */
1494 "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
1495 tagfile
, argbuffer
[i
].what
, tagfile
);
1496 if (system (cmd
) != EXIT_SUCCESS
)
1497 fatal ("failed to execute shell command", (char *)NULL
);
1499 append_to_tagfile
= TRUE
;
1502 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1505 put_entries (nodehead
); /* write all the tags (CTAGS) */
1506 free_tree (nodehead
);
1508 if (fclose (tagf
) == EOF
)
1512 if (append_to_tagfile
|| update
)
1514 char cmd
[2*BUFSIZ
+20];
1515 /* Maybe these should be used:
1516 setenv ("LC_COLLATE", "C", 1);
1517 setenv ("LC_ALL", "C", 1); */
1518 sprintf (cmd
, "sort -u -o %.*s %.*s", BUFSIZ
, tagfile
, BUFSIZ
, tagfile
);
1519 exit (system (cmd
));
1521 return EXIT_SUCCESS
;
1526 * Return a compressor given the file name. If EXTPTR is non-zero,
1527 * return a pointer into FILE where the compressor-specific
1528 * extension begins. If no compressor is found, NULL is returned
1529 * and EXTPTR is not significant.
1530 * Idea by Vladimir Alexiev <vladimir@cs.ualberta.ca> (1998)
1533 get_compressor_from_suffix (file
, extptr
)
1538 char *slash
, *suffix
;
1540 /* This relies on FN to be after canonicalize_filename,
1541 so we don't need to consider backslashes on DOS_NT. */
1542 slash
= etags_strrchr (file
, '/');
1543 suffix
= etags_strrchr (file
, '.');
1544 if (suffix
== NULL
|| suffix
< slash
)
1549 /* Let those poor souls who live with DOS 8+3 file name limits get
1550 some solace by treating foo.cgz as if it were foo.c.gz, etc.
1551 Only the first do loop is run if not MSDOS */
1554 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1555 if (streq (compr
->suffix
, suffix
))
1558 break; /* do it only once: not really a loop */
1561 } while (*suffix
!= '\0');
1568 * Return a language given the name.
1571 get_language_from_langname (name
)
1577 error ("empty language name", (char *)NULL
);
1580 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1581 if (streq (name
, lang
->name
))
1583 error ("unknown language \"%s\"", name
);
1591 * Return a language given the interpreter name.
1594 get_language_from_interpreter (interpreter
)
1600 if (interpreter
== NULL
)
1602 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1603 if (lang
->interpreters
!= NULL
)
1604 for (iname
= lang
->interpreters
; *iname
!= NULL
; iname
++)
1605 if (streq (*iname
, interpreter
))
1614 * Return a language given the file name.
1617 get_language_from_filename (file
, case_sensitive
)
1619 bool case_sensitive
;
1622 char **name
, **ext
, *suffix
;
1624 /* Try whole file name first. */
1625 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1626 if (lang
->filenames
!= NULL
)
1627 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
1628 if ((case_sensitive
)
1629 ? streq (*name
, file
)
1630 : strcaseeq (*name
, file
))
1633 /* If not found, try suffix after last dot. */
1634 suffix
= etags_strrchr (file
, '.');
1638 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1639 if (lang
->suffixes
!= NULL
)
1640 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
1641 if ((case_sensitive
)
1642 ? streq (*ext
, suffix
)
1643 : strcaseeq (*ext
, suffix
))
1650 * This routine is called on each file argument.
1653 process_file_name (file
, lang
)
1657 struct stat stat_buf
;
1661 char *compressed_name
, *uncompressed_name
;
1662 char *ext
, *real_name
;
1665 canonicalize_filename (file
);
1666 if (streq (file
, tagfile
) && !streq (tagfile
, "-"))
1668 error ("skipping inclusion of %s in self.", file
);
1671 if ((compr
= get_compressor_from_suffix (file
, &ext
)) == NULL
)
1673 compressed_name
= NULL
;
1674 real_name
= uncompressed_name
= savestr (file
);
1678 real_name
= compressed_name
= savestr (file
);
1679 uncompressed_name
= savenstr (file
, ext
- file
);
1682 /* If the canonicalized uncompressed name
1683 has already been dealt with, skip it silently. */
1684 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1686 assert (fdp
->infname
!= NULL
);
1687 if (streq (uncompressed_name
, fdp
->infname
))
1691 if (stat (real_name
, &stat_buf
) != 0)
1693 /* Reset real_name and try with a different name. */
1695 if (compressed_name
!= NULL
) /* try with the given suffix */
1697 if (stat (uncompressed_name
, &stat_buf
) == 0)
1698 real_name
= uncompressed_name
;
1700 else /* try all possible suffixes */
1702 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1704 compressed_name
= concat (file
, ".", compr
->suffix
);
1705 if (stat (compressed_name
, &stat_buf
) != 0)
1709 char *suf
= compressed_name
+ strlen (file
);
1710 size_t suflen
= strlen (compr
->suffix
) + 1;
1711 for ( ; suf
[1]; suf
++, suflen
--)
1713 memmove (suf
, suf
+ 1, suflen
);
1714 if (stat (compressed_name
, &stat_buf
) == 0)
1716 real_name
= compressed_name
;
1720 if (real_name
!= NULL
)
1723 free (compressed_name
);
1724 compressed_name
= NULL
;
1728 real_name
= compressed_name
;
1733 if (real_name
== NULL
)
1738 } /* try with a different name */
1740 if (!S_ISREG (stat_buf
.st_mode
))
1742 error ("skipping %s: it is not a regular file.", real_name
);
1745 if (real_name
== compressed_name
)
1747 char *cmd
= concat (compr
->command
, " ", real_name
);
1748 inf
= (FILE *) popen (cmd
, "r");
1752 inf
= fopen (real_name
, "r");
1759 process_file (inf
, uncompressed_name
, lang
);
1761 if (real_name
== compressed_name
)
1762 retval
= pclose (inf
);
1764 retval
= fclose (inf
);
1769 if (compressed_name
) free (compressed_name
);
1770 if (uncompressed_name
) free (uncompressed_name
);
1777 process_file (fh
, fn
, lang
)
1782 static const fdesc emptyfdesc
;
1785 /* Create a new input file description entry. */
1786 fdp
= xnew (1, fdesc
);
1789 fdp
->infname
= savestr (fn
);
1791 fdp
->infabsname
= absolute_filename (fn
, cwd
);
1792 fdp
->infabsdir
= absolute_dirname (fn
, cwd
);
1793 if (filename_is_absolute (fn
))
1795 /* An absolute file name. Canonicalize it. */
1796 fdp
->taggedfname
= absolute_filename (fn
, NULL
);
1800 /* A file name relative to cwd. Make it relative
1801 to the directory of the tags file. */
1802 fdp
->taggedfname
= relative_filename (fn
, tagfiledir
);
1804 fdp
->usecharno
= TRUE
; /* use char position when making tags */
1806 fdp
->written
= FALSE
; /* not written on tags file yet */
1809 curfdp
= fdhead
; /* the current file description */
1813 /* If not Ctags, and if this is not metasource and if it contained no #line
1814 directives, we can write the tags and free all nodes pointing to
1817 && curfdp
->usecharno
/* no #line directives in this file */
1818 && !curfdp
->lang
->metasource
)
1822 /* Look for the head of the sublist relative to this file. See add_node
1823 for the structure of the node tree. */
1825 for (np
= nodehead
; np
!= NULL
; prev
= np
, np
= np
->left
)
1826 if (np
->fdp
== curfdp
)
1829 /* If we generated tags for this file, write and delete them. */
1832 /* This is the head of the last sublist, if any. The following
1833 instructions depend on this being true. */
1834 assert (np
->left
== NULL
);
1836 assert (fdhead
== curfdp
);
1837 assert (last_node
->fdp
== curfdp
);
1838 put_entries (np
); /* write tags for file curfdp->taggedfname */
1839 free_tree (np
); /* remove the written nodes */
1841 nodehead
= NULL
; /* no nodes left */
1843 prev
->left
= NULL
; /* delete the pointer to the sublist */
1849 * This routine sets up the boolean pseudo-functions which work
1850 * by setting boolean flags dependent upon the corresponding character.
1851 * Every char which is NOT in that string is not a white char. Therefore,
1852 * all of the array "_wht" is set to FALSE, and then the elements
1853 * subscripted by the chars in "white" are set to TRUE. Thus "_wht"
1854 * of a char is TRUE if it is the string "white", else FALSE.
1862 for (i
= 0; i
< CHARS
; i
++)
1863 iswhite(i
) = notinname(i
) = begtoken(i
) = intoken(i
) = endtoken(i
) = FALSE
;
1864 for (sp
= white
; *sp
!= '\0'; sp
++) iswhite (*sp
) = TRUE
;
1865 for (sp
= nonam
; *sp
!= '\0'; sp
++) notinname (*sp
) = TRUE
;
1866 notinname('\0') = notinname('\n');
1867 for (sp
= begtk
; *sp
!= '\0'; sp
++) begtoken (*sp
) = TRUE
;
1868 begtoken('\0') = begtoken('\n');
1869 for (sp
= midtk
; *sp
!= '\0'; sp
++) intoken (*sp
) = TRUE
;
1870 intoken('\0') = intoken('\n');
1871 for (sp
= endtk
; *sp
!= '\0'; sp
++) endtoken (*sp
) = TRUE
;
1872 endtoken('\0') = endtoken('\n');
1876 * This routine opens the specified file and calls the function
1877 * which finds the function and type definitions.
1884 language
*lang
= curfdp
->lang
;
1885 Lang_function
*parser
= NULL
;
1887 /* If user specified a language, use it. */
1888 if (lang
!= NULL
&& lang
->function
!= NULL
)
1890 parser
= lang
->function
;
1893 /* Else try to guess the language given the file name. */
1896 lang
= get_language_from_filename (curfdp
->infname
, TRUE
);
1897 if (lang
!= NULL
&& lang
->function
!= NULL
)
1899 curfdp
->lang
= lang
;
1900 parser
= lang
->function
;
1904 /* Else look for sharp-bang as the first two characters. */
1906 && readline_internal (&lb
, inf
) > 0
1908 && lb
.buffer
[0] == '#'
1909 && lb
.buffer
[1] == '!')
1913 /* Set lp to point at the first char after the last slash in the
1914 line or, if no slashes, at the first nonblank. Then set cp to
1915 the first successive blank and terminate the string. */
1916 lp
= etags_strrchr (lb
.buffer
+2, '/');
1920 lp
= skip_spaces (lb
.buffer
+ 2);
1921 cp
= skip_non_spaces (lp
);
1924 if (strlen (lp
) > 0)
1926 lang
= get_language_from_interpreter (lp
);
1927 if (lang
!= NULL
&& lang
->function
!= NULL
)
1929 curfdp
->lang
= lang
;
1930 parser
= lang
->function
;
1935 /* We rewind here, even if inf may be a pipe. We fail if the
1936 length of the first line is longer than the pipe block size,
1937 which is unlikely. */
1940 /* Else try to guess the language given the case insensitive file name. */
1943 lang
= get_language_from_filename (curfdp
->infname
, FALSE
);
1944 if (lang
!= NULL
&& lang
->function
!= NULL
)
1946 curfdp
->lang
= lang
;
1947 parser
= lang
->function
;
1951 /* Else try Fortran or C. */
1954 node
*old_last_node
= last_node
;
1956 curfdp
->lang
= get_language_from_langname ("fortran");
1959 if (old_last_node
== last_node
)
1960 /* No Fortran entries found. Try C. */
1962 /* We do not tag if rewind fails.
1963 Only the file name will be recorded in the tags file. */
1965 curfdp
->lang
= get_language_from_langname (cplusplus
? "c++" : "c");
1971 if (!no_line_directive
1972 && curfdp
->lang
!= NULL
&& curfdp
->lang
->metasource
)
1973 /* It may be that this is a bingo.y file, and we already parsed a bingo.c
1974 file, or anyway we parsed a file that is automatically generated from
1975 this one. If this is the case, the bingo.c file contained #line
1976 directives that generated tags pointing to this file. Let's delete
1977 them all before parsing this file, which is the real source. */
1979 fdesc
**fdpp
= &fdhead
;
1980 while (*fdpp
!= NULL
)
1982 && streq ((*fdpp
)->taggedfname
, curfdp
->taggedfname
))
1983 /* We found one of those! We must delete both the file description
1984 and all tags referring to it. */
1986 fdesc
*badfdp
= *fdpp
;
1988 /* Delete the tags referring to badfdp->taggedfname
1989 that were obtained from badfdp->infname. */
1990 invalidate_nodes (badfdp
, &nodehead
);
1992 *fdpp
= badfdp
->next
; /* remove the bad description from the list */
1993 free_fdesc (badfdp
);
1996 fdpp
= &(*fdpp
)->next
; /* advance the list pointer */
1999 assert (parser
!= NULL
);
2001 /* Generic initialisations before reading from file. */
2002 linebuffer_setlen (&filebuf
, 0); /* reset the file buffer */
2004 /* Generic initialisations before parsing file with readline. */
2005 lineno
= 0; /* reset global line number */
2006 charno
= 0; /* reset global char number */
2007 linecharno
= 0; /* reset global char number of line start */
2011 regex_tag_multiline ();
2016 * Check whether an implicitly named tag should be created,
2017 * then call `pfnote'.
2018 * NAME is a string that is internally copied by this function.
2020 * TAGS format specification
2021 * Idea by Sam Kendall <kendall@mv.mv.com> (1997)
2022 * The following is explained in some more detail in etc/ETAGS.EBNF.
2024 * make_tag creates tags with "implicit tag names" (unnamed tags)
2025 * if the following are all true, assuming NONAM=" \f\t\n\r()=,;":
2026 * 1. NAME does not contain any of the characters in NONAM;
2027 * 2. LINESTART contains name as either a rightmost, or rightmost but
2028 * one character, substring;
2029 * 3. the character, if any, immediately before NAME in LINESTART must
2030 * be a character in NONAM;
2031 * 4. the character, if any, immediately after NAME in LINESTART must
2032 * also be a character in NONAM.
2034 * The implementation uses the notinname() macro, which recognises the
2035 * characters stored in the string `nonam'.
2036 * etags.el needs to use the same characters that are in NONAM.
2039 make_tag (name
, namelen
, is_func
, linestart
, linelen
, lno
, cno
)
2040 char *name
; /* tag name, or NULL if unnamed */
2041 int namelen
; /* tag length */
2042 bool is_func
; /* tag is a function */
2043 char *linestart
; /* start of the line where tag is */
2044 int linelen
; /* length of the line where tag is */
2045 int lno
; /* line number */
2046 long cno
; /* character number */
2048 bool named
= (name
!= NULL
&& namelen
> 0);
2050 if (!CTAGS
&& named
) /* maybe set named to false */
2051 /* Let's try to make an implicit tag name, that is, create an unnamed tag
2052 such that etags.el can guess a name from it. */
2055 register char *cp
= name
;
2057 for (i
= 0; i
< namelen
; i
++)
2058 if (notinname (*cp
++))
2060 if (i
== namelen
) /* rule #1 */
2062 cp
= linestart
+ linelen
- namelen
;
2063 if (notinname (linestart
[linelen
-1]))
2064 cp
-= 1; /* rule #4 */
2065 if (cp
>= linestart
/* rule #2 */
2067 || notinname (cp
[-1])) /* rule #3 */
2068 && strneq (name
, cp
, namelen
)) /* rule #2 */
2069 named
= FALSE
; /* use implicit tag name */
2074 name
= savenstr (name
, namelen
);
2077 pfnote (name
, is_func
, linestart
, linelen
, lno
, cno
);
2082 pfnote (name
, is_func
, linestart
, linelen
, lno
, cno
)
2083 char *name
; /* tag name, or NULL if unnamed */
2084 bool is_func
; /* tag is a function */
2085 char *linestart
; /* start of the line where tag is */
2086 int linelen
; /* length of the line where tag is */
2087 int lno
; /* line number */
2088 long cno
; /* character number */
2092 assert (name
== NULL
|| name
[0] != '\0');
2093 if (CTAGS
&& name
== NULL
)
2096 np
= xnew (1, node
);
2098 /* If ctags mode, change name "main" to M<thisfilename>. */
2099 if (CTAGS
&& !cxref_style
&& streq (name
, "main"))
2101 register char *fp
= etags_strrchr (curfdp
->taggedfname
, '/');
2102 np
->name
= concat ("M", fp
== NULL
? curfdp
->taggedfname
: fp
+ 1, "");
2103 fp
= etags_strrchr (np
->name
, '.');
2104 if (fp
!= NULL
&& fp
[1] != '\0' && fp
[2] == '\0')
2110 np
->been_warned
= FALSE
;
2112 np
->is_func
= is_func
;
2114 if (np
->fdp
->usecharno
)
2115 /* Our char numbers are 0-base, because of C language tradition?
2116 ctags compatibility? old versions compatibility? I don't know.
2117 Anyway, since emacs's are 1-base we expect etags.el to take care
2118 of the difference. If we wanted to have 1-based numbers, we would
2119 uncomment the +1 below. */
2120 np
->cno
= cno
/* + 1 */ ;
2122 np
->cno
= invalidcharno
;
2123 np
->left
= np
->right
= NULL
;
2124 if (CTAGS
&& !cxref_style
)
2126 if (strlen (linestart
) < 50)
2127 np
->regex
= concat (linestart
, "$", "");
2129 np
->regex
= savenstr (linestart
, 50);
2132 np
->regex
= savenstr (linestart
, linelen
);
2134 add_node (np
, &nodehead
);
2139 * recurse on left children, iterate on right children.
2147 register node
*node_right
= np
->right
;
2148 free_tree (np
->left
);
2149 if (np
->name
!= NULL
)
2159 * delete a file description
2163 register fdesc
*fdp
;
2165 if (fdp
->infname
!= NULL
) free (fdp
->infname
);
2166 if (fdp
->infabsname
!= NULL
) free (fdp
->infabsname
);
2167 if (fdp
->infabsdir
!= NULL
) free (fdp
->infabsdir
);
2168 if (fdp
->taggedfname
!= NULL
) free (fdp
->taggedfname
);
2169 if (fdp
->prop
!= NULL
) free (fdp
->prop
);
2175 * Adds a node to the tree of nodes. In etags mode, sort by file
2176 * name. In ctags mode, sort by tag name. Make no attempt at
2179 * add_node is the only function allowed to add nodes, so it can
2183 add_node (np
, cur_node_p
)
2184 node
*np
, **cur_node_p
;
2187 register node
*cur_node
= *cur_node_p
;
2189 if (cur_node
== NULL
)
2199 /* For each file name, tags are in a linked sublist on the right
2200 pointer. The first tags of different files are a linked list
2201 on the left pointer. last_node points to the end of the last
2203 if (last_node
!= NULL
&& last_node
->fdp
== np
->fdp
)
2205 /* Let's use the same sublist as the last added node. */
2206 assert (last_node
->right
== NULL
);
2207 last_node
->right
= np
;
2210 else if (cur_node
->fdp
== np
->fdp
)
2212 /* Scanning the list we found the head of a sublist which is
2213 good for us. Let's scan this sublist. */
2214 add_node (np
, &cur_node
->right
);
2217 /* The head of this sublist is not good for us. Let's try the
2219 add_node (np
, &cur_node
->left
);
2220 } /* if ETAGS mode */
2225 dif
= strcmp (np
->name
, cur_node
->name
);
2228 * If this tag name matches an existing one, then
2229 * do not add the node, but maybe print a warning.
2231 if (no_duplicates
&& !dif
)
2233 if (np
->fdp
== cur_node
->fdp
)
2237 fprintf (stderr
, "Duplicate entry in file %s, line %d: %s\n",
2238 np
->fdp
->infname
, lineno
, np
->name
);
2239 fprintf (stderr
, "Second entry ignored\n");
2242 else if (!cur_node
->been_warned
&& !no_warnings
)
2246 "Duplicate entry in files %s and %s: %s (Warning only)\n",
2247 np
->fdp
->infname
, cur_node
->fdp
->infname
, np
->name
);
2248 cur_node
->been_warned
= TRUE
;
2253 /* Actually add the node */
2254 add_node (np
, dif
< 0 ? &cur_node
->left
: &cur_node
->right
);
2255 } /* if CTAGS mode */
2259 * invalidate_nodes ()
2260 * Scan the node tree and invalidate all nodes pointing to the
2261 * given file description (CTAGS case) or free them (ETAGS case).
2264 invalidate_nodes (badfdp
, npp
)
2275 if (np
->left
!= NULL
)
2276 invalidate_nodes (badfdp
, &np
->left
);
2277 if (np
->fdp
== badfdp
)
2279 if (np
->right
!= NULL
)
2280 invalidate_nodes (badfdp
, &np
->right
);
2284 assert (np
->fdp
!= NULL
);
2285 if (np
->fdp
== badfdp
)
2287 *npp
= np
->left
; /* detach the sublist from the list */
2288 np
->left
= NULL
; /* isolate it */
2289 free_tree (np
); /* free it */
2290 invalidate_nodes (badfdp
, npp
);
2293 invalidate_nodes (badfdp
, &np
->left
);
2298 static int total_size_of_entries
__P((node
*));
2299 static int number_len
__P((long));
2301 /* Length of a non-negative number's decimal representation. */
2307 while ((num
/= 10) > 0)
2313 * Return total number of characters that put_entries will output for
2314 * the nodes in the linked list at the right of the specified node.
2315 * This count is irrelevant with etags.el since emacs 19.34 at least,
2316 * but is still supplied for backward compatibility.
2319 total_size_of_entries (np
)
2322 register int total
= 0;
2324 for (; np
!= NULL
; np
= np
->right
)
2327 total
+= strlen (np
->regex
) + 1; /* pat\177 */
2328 if (np
->name
!= NULL
)
2329 total
+= strlen (np
->name
) + 1; /* name\001 */
2330 total
+= number_len ((long) np
->lno
) + 1; /* lno, */
2331 if (np
->cno
!= invalidcharno
) /* cno */
2332 total
+= number_len (np
->cno
);
2333 total
+= 1; /* newline */
2344 static fdesc
*fdp
= NULL
;
2349 /* Output subentries that precede this one */
2351 put_entries (np
->left
);
2353 /* Output this entry */
2362 fprintf (tagf
, "\f\n%s,%d\n",
2363 fdp
->taggedfname
, total_size_of_entries (np
));
2364 fdp
->written
= TRUE
;
2366 fputs (np
->regex
, tagf
);
2367 fputc ('\177', tagf
);
2368 if (np
->name
!= NULL
)
2370 fputs (np
->name
, tagf
);
2371 fputc ('\001', tagf
);
2373 fprintf (tagf
, "%d,", np
->lno
);
2374 if (np
->cno
!= invalidcharno
)
2375 fprintf (tagf
, "%ld", np
->cno
);
2381 if (np
->name
== NULL
)
2382 error ("internal error: NULL name in ctags mode.", (char *)NULL
);
2387 fprintf (stdout
, "%s %s %d\n",
2388 np
->name
, np
->fdp
->taggedfname
, (np
->lno
+ 63) / 64);
2390 fprintf (stdout
, "%-16s %3d %-16s %s\n",
2391 np
->name
, np
->lno
, np
->fdp
->taggedfname
, np
->regex
);
2395 fprintf (tagf
, "%s\t%s\t", np
->name
, np
->fdp
->taggedfname
);
2398 { /* function or #define macro with args */
2399 putc (searchar
, tagf
);
2402 for (sp
= np
->regex
; *sp
; sp
++)
2404 if (*sp
== '\\' || *sp
== searchar
)
2408 putc (searchar
, tagf
);
2411 { /* anything else; text pattern inadequate */
2412 fprintf (tagf
, "%d", np
->lno
);
2417 } /* if this node contains a valid tag */
2419 /* Output subentries that follow this one */
2420 put_entries (np
->right
);
2422 put_entries (np
->left
);
2427 #define C_EXT 0x00fff /* C extensions */
2428 #define C_PLAIN 0x00000 /* C */
2429 #define C_PLPL 0x00001 /* C++ */
2430 #define C_STAR 0x00003 /* C* */
2431 #define C_JAVA 0x00005 /* JAVA */
2432 #define C_AUTO 0x01000 /* C, but switch to C++ if `class' is met */
2433 #define YACC 0x10000 /* yacc file */
2436 * The C symbol tables.
2441 st_C_objprot
, st_C_objimpl
, st_C_objend
,
2443 st_C_ignore
, st_C_attribute
,
2446 st_C_class
, st_C_template
,
2447 st_C_struct
, st_C_extern
, st_C_enum
, st_C_define
, st_C_typedef
2450 static unsigned int hash
__P((const char *, unsigned int));
2451 static struct C_stab_entry
* in_word_set
__P((const char *, unsigned int));
2452 static enum sym_type C_symtype
__P((char *, int, int));
2454 /* Feed stuff between (but not including) %[ and %] lines to:
2460 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
2464 while, 0, st_C_ignore
2465 switch, 0, st_C_ignore
2466 return, 0, st_C_ignore
2467 __attribute__, 0, st_C_attribute
2468 GTY, 0, st_C_attribute
2469 @interface, 0, st_C_objprot
2470 @protocol, 0, st_C_objprot
2471 @implementation,0, st_C_objimpl
2472 @end, 0, st_C_objend
2473 import, (C_JAVA & ~C_PLPL), st_C_ignore
2474 package, (C_JAVA & ~C_PLPL), st_C_ignore
2475 friend, C_PLPL, st_C_ignore
2476 extends, (C_JAVA & ~C_PLPL), st_C_javastruct
2477 implements, (C_JAVA & ~C_PLPL), st_C_javastruct
2478 interface, (C_JAVA & ~C_PLPL), st_C_struct
2479 class, 0, st_C_class
2480 namespace, C_PLPL, st_C_struct
2481 domain, C_STAR, st_C_struct
2482 union, 0, st_C_struct
2483 struct, 0, st_C_struct
2484 extern, 0, st_C_extern
2486 typedef, 0, st_C_typedef
2487 define, 0, st_C_define
2488 undef, 0, st_C_define
2489 operator, C_PLPL, st_C_operator
2490 template, 0, st_C_template
2491 # DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach).
2492 DEFUN, 0, st_C_gnumacro
2493 SYSCALL, 0, st_C_gnumacro
2494 ENTRY, 0, st_C_gnumacro
2495 PSEUDO, 0, st_C_gnumacro
2496 # These are defined inside C functions, so currently they are not met.
2497 # EXFUN used in glibc, DEFVAR_* in emacs.
2498 #EXFUN, 0, st_C_gnumacro
2499 #DEFVAR_, 0, st_C_gnumacro
2501 and replace lines between %< and %> with its output, then:
2502 - remove the #if characterset check
2503 - make in_word_set static and not inline. */
2505 /* C code produced by gperf version 3.0.1 */
2506 /* Command-line: gperf -m 5 */
2507 /* Computed positions: -k'2-3' */
2509 struct C_stab_entry
{ char *name
; int c_ext
; enum sym_type type
; };
2510 /* maximum key range = 33, duplicates = 0 */
2521 register const char *str
;
2522 register unsigned int len
;
2524 static unsigned char asso_values
[] =
2526 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2527 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2528 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2529 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2530 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2531 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2532 35, 35, 35, 35, 35, 35, 35, 35, 35, 3,
2533 26, 35, 35, 35, 35, 35, 35, 35, 27, 35,
2534 35, 35, 35, 24, 0, 35, 35, 35, 35, 0,
2535 35, 35, 35, 35, 35, 1, 35, 16, 35, 6,
2536 23, 0, 0, 35, 22, 0, 35, 35, 5, 0,
2537 0, 15, 1, 35, 6, 35, 8, 19, 35, 16,
2538 4, 5, 35, 35, 35, 35, 35, 35, 35, 35,
2539 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2540 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2541 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2542 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2543 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2544 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2545 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2546 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2547 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2548 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2549 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2550 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2551 35, 35, 35, 35, 35, 35
2553 register int hval
= len
;
2558 hval
+= asso_values
[(unsigned char)str
[2]];
2561 hval
+= asso_values
[(unsigned char)str
[1]];
2567 static struct C_stab_entry
*
2568 in_word_set (str
, len
)
2569 register const char *str
;
2570 register unsigned int len
;
2574 TOTAL_KEYWORDS
= 32,
2575 MIN_WORD_LENGTH
= 2,
2576 MAX_WORD_LENGTH
= 15,
2581 static struct C_stab_entry wordlist
[] =
2584 {"if", 0, st_C_ignore
},
2585 {"GTY", 0, st_C_attribute
},
2586 {"@end", 0, st_C_objend
},
2587 {"union", 0, st_C_struct
},
2588 {"define", 0, st_C_define
},
2589 {"import", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2590 {"template", 0, st_C_template
},
2591 {"operator", C_PLPL
, st_C_operator
},
2592 {"@interface", 0, st_C_objprot
},
2593 {"implements", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2594 {"friend", C_PLPL
, st_C_ignore
},
2595 {"typedef", 0, st_C_typedef
},
2596 {"return", 0, st_C_ignore
},
2597 {"@implementation",0, st_C_objimpl
},
2598 {"@protocol", 0, st_C_objprot
},
2599 {"interface", (C_JAVA
& ~C_PLPL
), st_C_struct
},
2600 {"extern", 0, st_C_extern
},
2601 {"extends", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2602 {"struct", 0, st_C_struct
},
2603 {"domain", C_STAR
, st_C_struct
},
2604 {"switch", 0, st_C_ignore
},
2605 {"enum", 0, st_C_enum
},
2606 {"for", 0, st_C_ignore
},
2607 {"namespace", C_PLPL
, st_C_struct
},
2608 {"class", 0, st_C_class
},
2609 {"while", 0, st_C_ignore
},
2610 {"undef", 0, st_C_define
},
2611 {"package", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2612 {"__attribute__", 0, st_C_attribute
},
2613 {"SYSCALL", 0, st_C_gnumacro
},
2614 {"ENTRY", 0, st_C_gnumacro
},
2615 {"PSEUDO", 0, st_C_gnumacro
},
2616 {"DEFUN", 0, st_C_gnumacro
}
2619 if (len
<= MAX_WORD_LENGTH
&& len
>= MIN_WORD_LENGTH
)
2621 register int key
= hash (str
, len
);
2623 if (key
<= MAX_HASH_VALUE
&& key
>= 0)
2625 register const char *s
= wordlist
[key
].name
;
2627 if (*str
== *s
&& !strncmp (str
+ 1, s
+ 1, len
- 1) && s
[len
] == '\0')
2628 return &wordlist
[key
];
2635 static enum sym_type
2636 C_symtype (str
, len
, c_ext
)
2641 register struct C_stab_entry
*se
= in_word_set (str
, len
);
2643 if (se
== NULL
|| (se
->c_ext
&& !(c_ext
& se
->c_ext
)))
2650 * Ignoring __attribute__ ((list))
2652 static bool inattribute
; /* looking at an __attribute__ construct */
2655 * C functions and variables are recognized using a simple
2656 * finite automaton. fvdef is its state variable.
2660 fvnone
, /* nothing seen */
2661 fdefunkey
, /* Emacs DEFUN keyword seen */
2662 fdefunname
, /* Emacs DEFUN name seen */
2663 foperator
, /* func: operator keyword seen (cplpl) */
2664 fvnameseen
, /* function or variable name seen */
2665 fstartlist
, /* func: just after open parenthesis */
2666 finlist
, /* func: in parameter list */
2667 flistseen
, /* func: after parameter list */
2668 fignore
, /* func: before open brace */
2669 vignore
/* var-like: ignore until ';' */
2672 static bool fvextern
; /* func or var: extern keyword seen; */
2675 * typedefs are recognized using a simple finite automaton.
2676 * typdef is its state variable.
2680 tnone
, /* nothing seen */
2681 tkeyseen
, /* typedef keyword seen */
2682 ttypeseen
, /* defined type seen */
2683 tinbody
, /* inside typedef body */
2684 tend
, /* just before typedef tag */
2685 tignore
/* junk after typedef tag */
2689 * struct-like structures (enum, struct and union) are recognized
2690 * using another simple finite automaton. `structdef' is its state
2695 snone
, /* nothing seen yet,
2696 or in struct body if bracelev > 0 */
2697 skeyseen
, /* struct-like keyword seen */
2698 stagseen
, /* struct-like tag seen */
2699 scolonseen
/* colon seen after struct-like tag */
2703 * When objdef is different from onone, objtag is the name of the class.
2705 static char *objtag
= "<uninited>";
2708 * Yet another little state machine to deal with preprocessor lines.
2712 dnone
, /* nothing seen */
2713 dsharpseen
, /* '#' seen as first char on line */
2714 ddefineseen
, /* '#' and 'define' seen */
2715 dignorerest
/* ignore rest of line */
2719 * State machine for Objective C protocols and implementations.
2720 * Idea by Tom R.Hageman <tom@basil.icce.rug.nl> (1995)
2724 onone
, /* nothing seen */
2725 oprotocol
, /* @interface or @protocol seen */
2726 oimplementation
, /* @implementations seen */
2727 otagseen
, /* class name seen */
2728 oparenseen
, /* parenthesis before category seen */
2729 ocatseen
, /* category name seen */
2730 oinbody
, /* in @implementation body */
2731 omethodsign
, /* in @implementation body, after +/- */
2732 omethodtag
, /* after method name */
2733 omethodcolon
, /* after method colon */
2734 omethodparm
, /* after method parameter */
2735 oignore
/* wait for @end */
2740 * Use this structure to keep info about the token read, and how it
2741 * should be tagged. Used by the make_C_tag function to build a tag.
2745 char *line
; /* string containing the token */
2746 int offset
; /* where the token starts in LINE */
2747 int length
; /* token length */
2749 The previous members can be used to pass strings around for generic
2750 purposes. The following ones specifically refer to creating tags. In this
2751 case the token contained here is the pattern that will be used to create a
2754 bool valid
; /* do not create a tag; the token should be
2755 invalidated whenever a state machine is
2756 reset prematurely */
2757 bool named
; /* create a named tag */
2758 int lineno
; /* source line number of tag */
2759 long linepos
; /* source char number of tag */
2760 } token
; /* latest token read */
2763 * Variables and functions for dealing with nested structures.
2764 * Idea by Mykola Dzyuba <mdzyuba@yahoo.com> (2001)
2766 static void pushclass_above
__P((int, char *, int));
2767 static void popclass_above
__P((int));
2768 static void write_classname
__P((linebuffer
*, char *qualifier
));
2771 char **cname
; /* nested class names */
2772 int *bracelev
; /* nested class brace level */
2773 int nl
; /* class nesting level (elements used) */
2774 int size
; /* length of the array */
2775 } cstack
; /* stack for nested declaration tags */
2776 /* Current struct nesting depth (namespace, class, struct, union, enum). */
2777 #define nestlev (cstack.nl)
2778 /* After struct keyword or in struct body, not inside a nested function. */
2779 #define instruct (structdef == snone && nestlev > 0 \
2780 && bracelev == cstack.bracelev[nestlev-1] + 1)
2783 pushclass_above (bracelev
, str
, len
)
2790 popclass_above (bracelev
);
2792 if (nl
>= cstack
.size
)
2794 int size
= cstack
.size
*= 2;
2795 xrnew (cstack
.cname
, size
, char *);
2796 xrnew (cstack
.bracelev
, size
, int);
2798 assert (nl
== 0 || cstack
.bracelev
[nl
-1] < bracelev
);
2799 cstack
.cname
[nl
] = (str
== NULL
) ? NULL
: savenstr (str
, len
);
2800 cstack
.bracelev
[nl
] = bracelev
;
2805 popclass_above (bracelev
)
2810 for (nl
= cstack
.nl
- 1;
2811 nl
>= 0 && cstack
.bracelev
[nl
] >= bracelev
;
2814 if (cstack
.cname
[nl
] != NULL
)
2815 free (cstack
.cname
[nl
]);
2821 write_classname (cn
, qualifier
)
2826 int qlen
= strlen (qualifier
);
2828 if (cstack
.nl
== 0 || cstack
.cname
[0] == NULL
)
2832 cn
->buffer
[0] = '\0';
2836 len
= strlen (cstack
.cname
[0]);
2837 linebuffer_setlen (cn
, len
);
2838 strcpy (cn
->buffer
, cstack
.cname
[0]);
2840 for (i
= 1; i
< cstack
.nl
; i
++)
2845 s
= cstack
.cname
[i
];
2850 linebuffer_setlen (cn
, len
);
2851 strncat (cn
->buffer
, qualifier
, qlen
);
2852 strncat (cn
->buffer
, s
, slen
);
2857 static bool consider_token
__P((char *, int, int, int *, int, int, bool *));
2858 static void make_C_tag
__P((bool));
2862 * checks to see if the current token is at the start of a
2863 * function or variable, or corresponds to a typedef, or
2864 * is a struct/union/enum tag, or #define, or an enum constant.
2866 * *IS_FUNC gets TRUE if the token is a function or #define macro
2867 * with args. C_EXTP points to which language we are looking at.
2878 consider_token (str
, len
, c
, c_extp
, bracelev
, parlev
, is_func_or_var
)
2879 register char *str
; /* IN: token pointer */
2880 register int len
; /* IN: token length */
2881 register int c
; /* IN: first char after the token */
2882 int *c_extp
; /* IN, OUT: C extensions mask */
2883 int bracelev
; /* IN: brace level */
2884 int parlev
; /* IN: parenthesis level */
2885 bool *is_func_or_var
; /* OUT: function or variable found */
2887 /* When structdef is stagseen, scolonseen, or snone with bracelev > 0,
2888 structtype is the type of the preceding struct-like keyword, and
2889 structbracelev is the brace level where it has been seen. */
2890 static enum sym_type structtype
;
2891 static int structbracelev
;
2892 static enum sym_type toktype
;
2895 toktype
= C_symtype (str
, len
, *c_extp
);
2898 * Skip __attribute__
2900 if (toktype
== st_C_attribute
)
2907 * Advance the definedef state machine.
2912 /* We're not on a preprocessor line. */
2913 if (toktype
== st_C_gnumacro
)
2920 if (toktype
== st_C_define
)
2922 definedef
= ddefineseen
;
2926 definedef
= dignorerest
;
2931 * Make a tag for any macro, unless it is a constant
2932 * and constantypedefs is FALSE.
2934 definedef
= dignorerest
;
2935 *is_func_or_var
= (c
== '(');
2936 if (!*is_func_or_var
&& !constantypedefs
)
2943 error ("internal error: definedef value.", (char *)NULL
);
2952 if (toktype
== st_C_typedef
)
2972 if (structdef
== snone
&& fvdef
== fvnone
)
2991 case st_C_javastruct
:
2992 if (structdef
== stagseen
)
2993 structdef
= scolonseen
;
2997 if ((*c_extp
& C_AUTO
) /* automatic detection of C++ language */
2999 && definedef
== dnone
&& structdef
== snone
3000 && typdef
== tnone
&& fvdef
== fvnone
)
3001 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
3002 if (toktype
== st_C_template
)
3009 && (typdef
== tkeyseen
3010 || (typedefs_or_cplusplus
&& structdef
== snone
)))
3012 structdef
= skeyseen
;
3013 structtype
= toktype
;
3014 structbracelev
= bracelev
;
3015 if (fvdef
== fvnameseen
)
3021 if (structdef
== skeyseen
)
3023 structdef
= stagseen
;
3027 if (typdef
!= tnone
)
3030 /* Detect Objective C constructs. */
3040 objdef
= oimplementation
;
3044 case oimplementation
:
3045 /* Save the class tag for functions or variables defined inside. */
3046 objtag
= savenstr (str
, len
);
3050 /* Save the class tag for categories. */
3051 objtag
= savenstr (str
, len
);
3053 *is_func_or_var
= TRUE
;
3057 *is_func_or_var
= TRUE
;
3065 objdef
= omethodtag
;
3066 linebuffer_setlen (&token_name
, len
);
3067 strncpy (token_name
.buffer
, str
, len
);
3068 token_name
.buffer
[len
] = '\0';
3074 objdef
= omethodparm
;
3080 objdef
= omethodtag
;
3081 linebuffer_setlen (&token_name
, token_name
.len
+ len
);
3082 strncat (token_name
.buffer
, str
, len
);
3087 if (toktype
== st_C_objend
)
3089 /* Memory leakage here: the string pointed by objtag is
3090 never released, because many tests would be needed to
3091 avoid breaking on incorrect input code. The amount of
3092 memory leaked here is the sum of the lengths of the
3100 /* A function, variable or enum constant? */
3122 *is_func_or_var
= TRUE
;
3126 && structdef
== snone
3127 && structtype
== st_C_enum
&& bracelev
> structbracelev
)
3128 return TRUE
; /* enum constant */
3134 fvdef
= fdefunname
; /* GNU macro */
3135 *is_func_or_var
= TRUE
;
3143 if ((strneq (str
, "asm", 3) && endtoken (str
[3]))
3144 || (strneq (str
, "__asm__", 7) && endtoken (str
[7])))
3153 if (len
>= 10 && strneq (str
+len
-10, "::operator", 10))
3155 if (*c_extp
& C_AUTO
) /* automatic detection of C++ */
3156 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
3158 *is_func_or_var
= TRUE
;
3161 if (bracelev
> 0 && !instruct
)
3163 fvdef
= fvnameseen
; /* function or variable */
3164 *is_func_or_var
= TRUE
;
3175 * C_entries often keeps pointers to tokens or lines which are older than
3176 * the line currently read. By keeping two line buffers, and switching
3177 * them at end of line, it is possible to use those pointers.
3185 #define current_lb_is_new (newndx == curndx)
3186 #define switch_line_buffers() (curndx = 1 - curndx)
3188 #define curlb (lbs[curndx].lb)
3189 #define newlb (lbs[newndx].lb)
3190 #define curlinepos (lbs[curndx].linepos)
3191 #define newlinepos (lbs[newndx].linepos)
3193 #define plainc ((c_ext & C_EXT) == C_PLAIN)
3194 #define cplpl (c_ext & C_PLPL)
3195 #define cjava ((c_ext & C_JAVA) == C_JAVA)
3197 #define CNL_SAVE_DEFINEDEF() \
3199 curlinepos = charno; \
3200 readline (&curlb, inf); \
3201 lp = curlb.buffer; \
3208 CNL_SAVE_DEFINEDEF(); \
3209 if (savetoken.valid) \
3211 token = savetoken; \
3212 savetoken.valid = FALSE; \
3214 definedef = dnone; \
3222 /* This function is never called when token.valid is FALSE, but
3223 we must protect against invalid input or internal errors. */
3224 if (!DEBUG
&& !token
.valid
)
3228 make_tag (token_name
.buffer
, token_name
.len
, isfun
, token
.line
,
3229 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3230 else /* this case is optimised away if !DEBUG */
3231 make_tag (concat ("INVALID TOKEN:-->", token_name
.buffer
, ""),
3232 token_name
.len
+ 17, isfun
, token
.line
,
3233 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3235 token
.valid
= FALSE
;
3241 * This routine finds functions, variables, typedefs,
3242 * #define's, enum constants and struct/union/enum definitions in
3243 * C syntax and adds them to the list.
3246 C_entries (c_ext
, inf
)
3247 int c_ext
; /* extension of C */
3248 FILE *inf
; /* input file */
3250 register char c
; /* latest char read; '\0' for end of line */
3251 register char *lp
; /* pointer one beyond the character `c' */
3252 int curndx
, newndx
; /* indices for current and new lb */
3253 register int tokoff
; /* offset in line of start of current token */
3254 register int toklen
; /* length of current token */
3255 char *qualifier
; /* string used to qualify names */
3256 int qlen
; /* length of qualifier */
3257 int bracelev
; /* current brace level */
3258 int bracketlev
; /* current bracket level */
3259 int parlev
; /* current parenthesis level */
3260 int attrparlev
; /* __attribute__ parenthesis level */
3261 int templatelev
; /* current template level */
3262 int typdefbracelev
; /* bracelev where a typedef struct body begun */
3263 bool incomm
, inquote
, inchar
, quotednl
, midtoken
;
3264 bool yacc_rules
; /* in the rules part of a yacc file */
3265 struct tok savetoken
= {0}; /* token saved during preprocessor handling */
3268 linebuffer_init (&lbs
[0].lb
);
3269 linebuffer_init (&lbs
[1].lb
);
3270 if (cstack
.size
== 0)
3272 cstack
.size
= (DEBUG
) ? 1 : 4;
3274 cstack
.cname
= xnew (cstack
.size
, char *);
3275 cstack
.bracelev
= xnew (cstack
.size
, int);
3278 tokoff
= toklen
= typdefbracelev
= 0; /* keep compiler quiet */
3279 curndx
= newndx
= 0;
3283 fvdef
= fvnone
; fvextern
= FALSE
; typdef
= tnone
;
3284 structdef
= snone
; definedef
= dnone
; objdef
= onone
;
3286 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3287 token
.valid
= savetoken
.valid
= FALSE
;
3288 bracelev
= bracketlev
= parlev
= attrparlev
= templatelev
= 0;
3290 { qualifier
= "."; qlen
= 1; }
3292 { qualifier
= "::"; qlen
= 2; }
3300 /* If we are at the end of the line, the next character is a
3301 '\0'; do not skip it, because it is what tells us
3302 to read the next line. */
3323 /* Newlines inside comments do not end macro definitions in
3325 CNL_SAVE_DEFINEDEF ();
3338 /* Newlines inside strings do not end macro definitions
3339 in traditional cpp, even though compilers don't
3340 usually accept them. */
3341 CNL_SAVE_DEFINEDEF ();
3351 /* Hmmm, something went wrong. */
3360 else if (bracketlev
> 0)
3365 if (--bracketlev
> 0)
3369 CNL_SAVE_DEFINEDEF ();
3397 if (fvdef
!= finlist
&& fvdef
!= fignore
&& fvdef
!=vignore
)
3410 else if (/* cplpl && */ *lp
== '/')
3416 if ((c_ext
& YACC
) && *lp
== '%')
3418 /* Entering or exiting rules section in yacc file. */
3420 definedef
= dnone
; fvdef
= fvnone
; fvextern
= FALSE
;
3421 typdef
= tnone
; structdef
= snone
;
3422 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3424 yacc_rules
= !yacc_rules
;
3430 if (definedef
== dnone
)
3433 bool cpptoken
= TRUE
;
3435 /* Look back on this line. If all blanks, or nonblanks
3436 followed by an end of comment, this is a preprocessor
3438 for (cp
= newlb
.buffer
; cp
< lp
-1; cp
++)
3441 if (*cp
== '*' && *(cp
+1) == '/')
3450 definedef
= dsharpseen
;
3451 } /* if (definedef == dnone) */
3459 /* Consider token only if some involved conditions are satisfied. */
3460 if (typdef
!= tignore
3461 && definedef
!= dignorerest
3464 && (definedef
!= dnone
3465 || structdef
!= scolonseen
)
3472 if (c
== ':' && *lp
== ':' && begtoken (lp
[1]))
3473 /* This handles :: in the middle,
3474 but not at the beginning of an identifier.
3475 Also, space-separated :: is not recognised. */
3477 if (c_ext
& C_AUTO
) /* automatic detection of C++ */
3478 c_ext
= (c_ext
| C_PLPL
) & ~C_AUTO
;
3482 goto still_in_token
;
3486 bool funorvar
= FALSE
;
3489 || consider_token (newlb
.buffer
+ tokoff
, toklen
, c
,
3490 &c_ext
, bracelev
, parlev
,
3493 if (fvdef
== foperator
)
3496 lp
= skip_spaces (lp
-1);
3500 && !iswhite (*lp
) && *lp
!= '(')
3503 toklen
+= lp
- oldlp
;
3505 token
.named
= FALSE
;
3507 && nestlev
> 0 && definedef
== dnone
)
3508 /* in struct body */
3510 write_classname (&token_name
, qualifier
);
3511 linebuffer_setlen (&token_name
,
3512 token_name
.len
+qlen
+toklen
);
3513 strcat (token_name
.buffer
, qualifier
);
3514 strncat (token_name
.buffer
,
3515 newlb
.buffer
+ tokoff
, toklen
);
3518 else if (objdef
== ocatseen
)
3519 /* Objective C category */
3521 int len
= strlen (objtag
) + 2 + toklen
;
3522 linebuffer_setlen (&token_name
, len
);
3523 strcpy (token_name
.buffer
, objtag
);
3524 strcat (token_name
.buffer
, "(");
3525 strncat (token_name
.buffer
,
3526 newlb
.buffer
+ tokoff
, toklen
);
3527 strcat (token_name
.buffer
, ")");
3530 else if (objdef
== omethodtag
3531 || objdef
== omethodparm
)
3532 /* Objective C method */
3536 else if (fvdef
== fdefunname
)
3537 /* GNU DEFUN and similar macros */
3539 bool defun
= (newlb
.buffer
[tokoff
] == 'F');
3543 /* Rewrite the tag so that emacs lisp DEFUNs
3544 can be found by their elisp name */
3550 linebuffer_setlen (&token_name
, len
);
3551 strncpy (token_name
.buffer
,
3552 newlb
.buffer
+ off
, len
);
3553 token_name
.buffer
[len
] = '\0';
3556 if (token_name
.buffer
[len
] == '_')
3557 token_name
.buffer
[len
] = '-';
3558 token
.named
= defun
;
3562 linebuffer_setlen (&token_name
, toklen
);
3563 strncpy (token_name
.buffer
,
3564 newlb
.buffer
+ tokoff
, toklen
);
3565 token_name
.buffer
[toklen
] = '\0';
3566 /* Name macros and members. */
3567 token
.named
= (structdef
== stagseen
3568 || typdef
== ttypeseen
3571 && definedef
== dignorerest
)
3573 && definedef
== dnone
3574 && structdef
== snone
3577 token
.lineno
= lineno
;
3578 token
.offset
= tokoff
;
3579 token
.length
= toklen
;
3580 token
.line
= newlb
.buffer
;
3581 token
.linepos
= newlinepos
;
3584 if (definedef
== dnone
3585 && (fvdef
== fvnameseen
3586 || fvdef
== foperator
3587 || structdef
== stagseen
3589 || typdef
== ttypeseen
3590 || objdef
!= onone
))
3592 if (current_lb_is_new
)
3593 switch_line_buffers ();
3595 else if (definedef
!= dnone
3596 || fvdef
== fdefunname
3598 make_C_tag (funorvar
);
3600 else /* not yacc and consider_token failed */
3602 if (inattribute
&& fvdef
== fignore
)
3604 /* We have just met __attribute__ after a
3605 function parameter list: do not tag the
3612 } /* if (endtoken (c)) */
3613 else if (intoken (c
))
3619 } /* if (midtoken) */
3620 else if (begtoken (c
))
3628 /* This prevents tagging fb in
3629 void (__attribute__((noreturn)) *fb) (void);
3630 Fixing this is not easy and not very important. */
3634 if (plainc
|| declarations
)
3636 make_C_tag (TRUE
); /* a function */
3641 if (structdef
== stagseen
&& !cjava
)
3643 popclass_above (bracelev
);
3651 if (!yacc_rules
|| lp
== newlb
.buffer
+ 1)
3653 tokoff
= lp
- 1 - newlb
.buffer
;
3658 } /* if (begtoken) */
3659 } /* if must look at token */
3662 /* Detect end of line, colon, comma, semicolon and various braces
3663 after having handled a token.*/
3669 if (yacc_rules
&& token
.offset
== 0 && token
.valid
)
3671 make_C_tag (FALSE
); /* a yacc function */
3674 if (definedef
!= dnone
)
3680 make_C_tag (TRUE
); /* an Objective C class */
3684 objdef
= omethodcolon
;
3685 linebuffer_setlen (&token_name
, token_name
.len
+ 1);
3686 strcat (token_name
.buffer
, ":");
3689 if (structdef
== stagseen
)
3691 structdef
= scolonseen
;
3694 /* Should be useless, but may be work as a safety net. */
3695 if (cplpl
&& fvdef
== flistseen
)
3697 make_C_tag (TRUE
); /* a function */
3703 if (definedef
!= dnone
|| inattribute
)
3709 make_C_tag (FALSE
); /* a typedef */
3719 if (typdef
== tignore
|| cplpl
)
3723 if ((globals
&& bracelev
== 0 && (!fvextern
|| declarations
))
3724 || (members
&& instruct
))
3725 make_C_tag (FALSE
); /* a variable */
3728 token
.valid
= FALSE
;
3732 && (cplpl
|| !instruct
)
3733 && (typdef
== tnone
|| (typdef
!= tignore
&& instruct
)))
3735 && plainc
&& instruct
))
3736 make_C_tag (TRUE
); /* a function */
3742 && cplpl
&& structdef
== stagseen
)
3743 make_C_tag (FALSE
); /* forward declaration */
3745 token
.valid
= FALSE
;
3746 } /* switch (fvdef) */
3752 if (structdef
== stagseen
)
3756 if (definedef
!= dnone
|| inattribute
)
3762 make_C_tag (TRUE
); /* an Objective C method */
3783 && (!fvextern
|| declarations
))
3784 || (members
&& instruct
)))
3785 make_C_tag (FALSE
); /* a variable */
3788 if ((declarations
&& typdef
== tnone
&& !instruct
)
3789 || (members
&& typdef
!= tignore
&& instruct
))
3791 make_C_tag (TRUE
); /* a function */
3794 else if (!declarations
)
3796 token
.valid
= FALSE
;
3801 if (structdef
== stagseen
)
3805 if (definedef
!= dnone
|| inattribute
)
3807 if (structdef
== stagseen
)
3814 make_C_tag (FALSE
); /* a typedef */
3826 if ((members
&& bracelev
== 1)
3827 || (globals
&& bracelev
== 0
3828 && (!fvextern
|| declarations
)))
3829 make_C_tag (FALSE
); /* a variable */
3843 if (definedef
!= dnone
)
3845 if (objdef
== otagseen
&& parlev
== 0)
3846 objdef
= oparenseen
;
3850 if (typdef
== ttypeseen
3854 /* This handles constructs like:
3855 typedef void OperatorFun (int fun); */
3874 if (--attrparlev
== 0)
3875 inattribute
= FALSE
;
3878 if (definedef
!= dnone
)
3880 if (objdef
== ocatseen
&& parlev
== 1)
3882 make_C_tag (TRUE
); /* an Objective C category */
3896 || typdef
== ttypeseen
))
3899 make_C_tag (FALSE
); /* a typedef */
3902 else if (parlev
< 0) /* can happen due to ill-conceived #if's. */
3906 if (definedef
!= dnone
)
3908 if (typdef
== ttypeseen
)
3910 /* Whenever typdef is set to tinbody (currently only
3911 here), typdefbracelev should be set to bracelev. */
3913 typdefbracelev
= bracelev
;
3918 make_C_tag (TRUE
); /* a function */
3927 make_C_tag (TRUE
); /* an Objective C class */
3932 make_C_tag (TRUE
); /* an Objective C method */
3936 /* Neutralize `extern "C" {' grot. */
3937 if (bracelev
== 0 && structdef
== snone
&& nestlev
== 0
3945 case skeyseen
: /* unnamed struct */
3946 pushclass_above (bracelev
, NULL
, 0);
3949 case stagseen
: /* named struct or enum */
3950 case scolonseen
: /* a class */
3951 pushclass_above (bracelev
,token
.line
+token
.offset
, token
.length
);
3953 make_C_tag (FALSE
); /* a struct or enum */
3959 if (definedef
!= dnone
)
3961 if (fvdef
== fstartlist
)
3963 fvdef
= fvnone
; /* avoid tagging `foo' in `foo (*bar()) ()' */
3964 token
.valid
= FALSE
;
3968 if (definedef
!= dnone
)
3971 if (!ignoreindent
&& lp
== newlb
.buffer
+ 1)
3974 token
.valid
= FALSE
; /* unexpected value, token unreliable */
3975 bracelev
= 0; /* reset brace level if first column */
3976 parlev
= 0; /* also reset paren level, just in case... */
3978 else if (bracelev
< 0)
3980 token
.valid
= FALSE
; /* something gone amiss, token unreliable */
3983 if (bracelev
== 0 && fvdef
== vignore
)
3984 fvdef
= fvnone
; /* end of function */
3985 popclass_above (bracelev
);
3987 /* Only if typdef == tinbody is typdefbracelev significant. */
3988 if (typdef
== tinbody
&& bracelev
<= typdefbracelev
)
3990 assert (bracelev
== typdefbracelev
);
3995 if (definedef
!= dnone
)
4005 if ((members
&& bracelev
== 1)
4006 || (globals
&& bracelev
== 0 && (!fvextern
|| declarations
)))
4007 make_C_tag (FALSE
); /* a variable */
4015 && (structdef
== stagseen
|| fvdef
== fvnameseen
))
4022 if (templatelev
> 0)
4030 if (objdef
== oinbody
&& bracelev
== 0)
4032 objdef
= omethodsign
;
4037 case '#': case '~': case '&': case '%': case '/':
4038 case '|': case '^': case '!': case '.': case '?':
4039 if (definedef
!= dnone
)
4041 /* These surely cannot follow a function tag in C. */
4054 if (objdef
== otagseen
)
4056 make_C_tag (TRUE
); /* an Objective C class */
4059 /* If a macro spans multiple lines don't reset its state. */
4061 CNL_SAVE_DEFINEDEF ();
4067 } /* while not eof */
4069 free (lbs
[0].lb
.buffer
);
4070 free (lbs
[1].lb
.buffer
);
4074 * Process either a C++ file or a C file depending on the setting
4078 default_C_entries (inf
)
4081 C_entries (cplusplus
? C_PLPL
: C_AUTO
, inf
);
4084 /* Always do plain C. */
4086 plain_C_entries (inf
)
4092 /* Always do C++. */
4094 Cplusplus_entries (inf
)
4097 C_entries (C_PLPL
, inf
);
4100 /* Always do Java. */
4105 C_entries (C_JAVA
, inf
);
4113 C_entries (C_STAR
, inf
);
4116 /* Always do Yacc. */
4121 C_entries (YACC
, inf
);
4125 /* Useful macros. */
4126 #define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \
4127 for (; /* loop initialization */ \
4128 !feof (file_pointer) /* loop test */ \
4129 && /* instructions at start of loop */ \
4130 (readline (&line_buffer, file_pointer), \
4131 char_pointer = line_buffer.buffer, \
4135 #define LOOKING_AT(cp, kw) /* kw is the keyword, a literal string */ \
4136 ((assert("" kw), TRUE) /* syntax error if not a literal string */ \
4137 && strneq ((cp), kw, sizeof(kw)-1) /* cp points at kw */ \
4138 && notinname ((cp)[sizeof(kw)-1]) /* end of kw */ \
4139 && ((cp) = skip_spaces((cp)+sizeof(kw)-1))) /* skip spaces */
4141 /* Similar to LOOKING_AT but does not use notinname, does not skip */
4142 #define LOOKING_AT_NOCASE(cp, kw) /* the keyword is a literal string */ \
4143 ((assert("" kw), TRUE) /* syntax error if not a literal string */ \
4144 && strncaseeq ((cp), kw, sizeof(kw)-1) /* cp points at kw */ \
4145 && ((cp) += sizeof(kw)-1)) /* skip spaces */
4148 * Read a file, but do no processing. This is used to do regexp
4149 * matching on files that have no language defined.
4152 just_read_file (inf
)
4155 register char *dummy
;
4157 LOOP_ON_INPUT_LINES (inf
, lb
, dummy
)
4162 /* Fortran parsing */
4164 static void F_takeprec
__P((void));
4165 static void F_getit
__P((FILE *));
4170 dbp
= skip_spaces (dbp
);
4174 dbp
= skip_spaces (dbp
);
4175 if (strneq (dbp
, "(*)", 3))
4180 if (!ISDIGIT (*dbp
))
4182 --dbp
; /* force failure */
4187 while (ISDIGIT (*dbp
));
4196 dbp
= skip_spaces (dbp
);
4199 readline (&lb
, inf
);
4204 dbp
= skip_spaces (dbp
);
4206 if (!ISALPHA (*dbp
) && *dbp
!= '_' && *dbp
!= '$')
4208 for (cp
= dbp
+ 1; *cp
!= '\0' && intoken (*cp
); cp
++)
4210 make_tag (dbp
, cp
-dbp
, TRUE
,
4211 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4216 Fortran_functions (inf
)
4219 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4222 dbp
++; /* Ratfor escape to fortran */
4223 dbp
= skip_spaces (dbp
);
4226 switch (lowcase (*dbp
))
4229 if (nocase_tail ("integer"))
4233 if (nocase_tail ("real"))
4237 if (nocase_tail ("logical"))
4241 if (nocase_tail ("complex") || nocase_tail ("character"))
4245 if (nocase_tail ("double"))
4247 dbp
= skip_spaces (dbp
);
4250 if (nocase_tail ("precision"))
4256 dbp
= skip_spaces (dbp
);
4259 switch (lowcase (*dbp
))
4262 if (nocase_tail ("function"))
4266 if (nocase_tail ("subroutine"))
4270 if (nocase_tail ("entry"))
4274 if (nocase_tail ("blockdata") || nocase_tail ("block data"))
4276 dbp
= skip_spaces (dbp
);
4277 if (*dbp
== '\0') /* assume un-named */
4278 make_tag ("blockdata", 9, TRUE
,
4279 lb
.buffer
, dbp
- lb
.buffer
, lineno
, linecharno
);
4281 F_getit (inf
); /* look for name */
4292 * Philippe Waroquiers (1998)
4295 static void Ada_getit
__P((FILE *, char *));
4297 /* Once we are positioned after an "interesting" keyword, let's get
4298 the real tag value necessary. */
4300 Ada_getit (inf
, name_qualifier
)
4302 char *name_qualifier
;
4310 dbp
= skip_spaces (dbp
);
4312 || (dbp
[0] == '-' && dbp
[1] == '-'))
4314 readline (&lb
, inf
);
4317 switch (lowcase(*dbp
))
4320 if (nocase_tail ("body"))
4322 /* Skipping body of procedure body or package body or ....
4323 resetting qualifier to body instead of spec. */
4324 name_qualifier
= "/b";
4329 /* Skipping type of task type or protected type ... */
4330 if (nocase_tail ("type"))
4337 for (cp
= dbp
; *cp
!= '\0' && *cp
!= '"'; cp
++)
4342 dbp
= skip_spaces (dbp
);
4345 && (ISALPHA (*cp
) || ISDIGIT (*cp
) || *cp
== '_' || *cp
== '.'));
4353 name
= concat (dbp
, name_qualifier
, "");
4355 make_tag (name
, strlen (name
), TRUE
,
4356 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4368 bool inquote
= FALSE
;
4369 bool skip_till_semicolumn
= FALSE
;
4371 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4373 while (*dbp
!= '\0')
4375 /* Skip a string i.e. "abcd". */
4376 if (inquote
|| (*dbp
== '"'))
4378 dbp
= etags_strchr ((inquote
) ? dbp
: dbp
+1, '"');
4383 continue; /* advance char */
4388 break; /* advance line */
4392 /* Skip comments. */
4393 if (dbp
[0] == '-' && dbp
[1] == '-')
4394 break; /* advance line */
4396 /* Skip character enclosed in single quote i.e. 'a'
4397 and skip single quote starting an attribute i.e. 'Image. */
4406 if (skip_till_semicolumn
)
4409 skip_till_semicolumn
= FALSE
;
4411 continue; /* advance char */
4414 /* Search for beginning of a token. */
4415 if (!begtoken (*dbp
))
4418 continue; /* advance char */
4421 /* We are at the beginning of a token. */
4422 switch (lowcase(*dbp
))
4425 if (!packages_only
&& nocase_tail ("function"))
4426 Ada_getit (inf
, "/f");
4428 break; /* from switch */
4429 continue; /* advance char */
4431 if (!packages_only
&& nocase_tail ("procedure"))
4432 Ada_getit (inf
, "/p");
4433 else if (nocase_tail ("package"))
4434 Ada_getit (inf
, "/s");
4435 else if (nocase_tail ("protected")) /* protected type */
4436 Ada_getit (inf
, "/t");
4438 break; /* from switch */
4439 continue; /* advance char */
4442 if (typedefs
&& !packages_only
&& nocase_tail ("use"))
4444 /* when tagging types, avoid tagging use type Pack.Typename;
4445 for this, we will skip everything till a ; */
4446 skip_till_semicolumn
= TRUE
;
4447 continue; /* advance char */
4451 if (!packages_only
&& nocase_tail ("task"))
4452 Ada_getit (inf
, "/k");
4453 else if (typedefs
&& !packages_only
&& nocase_tail ("type"))
4455 Ada_getit (inf
, "/t");
4456 while (*dbp
!= '\0')
4460 break; /* from switch */
4461 continue; /* advance char */
4464 /* Look for the end of the token. */
4465 while (!endtoken (*dbp
))
4468 } /* advance char */
4469 } /* advance line */
4474 * Unix and microcontroller assembly tag handling
4475 * Labels: /^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]/
4476 * Idea by Bob Weiner, Motorola Inc. (1994)
4484 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4486 /* If first char is alphabetic or one of [_.$], test for colon
4487 following identifier. */
4488 if (ISALPHA (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4490 /* Read past label. */
4492 while (ISALNUM (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4494 if (*cp
== ':' || iswhite (*cp
))
4495 /* Found end of label, so copy it and add it to the table. */
4496 make_tag (lb
.buffer
, cp
- lb
.buffer
, TRUE
,
4497 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4505 * Perl sub names: /^sub[ \t\n]+[^ \t\n{]+/
4506 * Perl variable names: /^(my|local).../
4507 * Original code by Bart Robinson <lomew@cs.utah.edu> (1995)
4508 * Additions by Michael Ernst <mernst@alum.mit.edu> (1997)
4509 * Ideas by Kai Großjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE> (2001)
4512 Perl_functions (inf
)
4515 char *package
= savestr ("main"); /* current package name */
4518 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4522 if (LOOKING_AT (cp
, "package"))
4525 get_tag (cp
, &package
);
4527 else if (LOOKING_AT (cp
, "sub"))
4532 while (!notinname (*cp
))
4535 continue; /* nothing found */
4536 if ((pos
= etags_strchr (sp
, ':')) != NULL
4537 && pos
< cp
&& pos
[1] == ':')
4538 /* The name is already qualified. */
4539 make_tag (sp
, cp
- sp
, TRUE
,
4540 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4544 char savechar
, *name
;
4548 name
= concat (package
, "::", sp
);
4550 make_tag (name
, strlen(name
), TRUE
,
4551 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4555 else if (globals
) /* only if we are tagging global vars */
4557 /* Skip a qualifier, if any. */
4558 bool qual
= LOOKING_AT (cp
, "my") || LOOKING_AT (cp
, "local");
4559 /* After "my" or "local", but before any following paren or space. */
4560 char *varstart
= cp
;
4562 if (qual
/* should this be removed? If yes, how? */
4563 && (*cp
== '$' || *cp
== '@' || *cp
== '%'))
4568 while (ISALNUM (*cp
) || *cp
== '_');
4572 /* Should be examining a variable list at this point;
4573 could insist on seeing an open parenthesis. */
4574 while (*cp
!= '\0' && *cp
!= ';' && *cp
!= '=' && *cp
!= ')')
4580 make_tag (varstart
, cp
- varstart
, FALSE
,
4581 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4590 * Look for /^[\t]*def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/
4591 * Idea by Eric S. Raymond <esr@thyrsus.com> (1997)
4592 * More ideas by seb bacon <seb@jamkit.com> (2002)
4595 Python_functions (inf
)
4600 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4602 cp
= skip_spaces (cp
);
4603 if (LOOKING_AT (cp
, "def") || LOOKING_AT (cp
, "class"))
4606 while (!notinname (*cp
) && *cp
!= ':')
4608 make_tag (name
, cp
- name
, TRUE
,
4609 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4618 * - /^[ \t]*function[ \t\n]+[^ \t\n(]+/
4619 * - /^[ \t]*class[ \t\n]+[^ \t\n]+/
4620 * - /^[ \t]*define\(\"[^\"]+/
4621 * Only with --members:
4622 * - /^[ \t]*var[ \t\n]+\$[^ \t\n=;]/
4623 * Idea by Diez B. Roggisch (2001)
4629 register char *cp
, *name
;
4630 bool search_identifier
= FALSE
;
4632 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4634 cp
= skip_spaces (cp
);
4636 if (search_identifier
4639 while (!notinname (*cp
))
4641 make_tag (name
, cp
- name
, TRUE
,
4642 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4643 search_identifier
= FALSE
;
4645 else if (LOOKING_AT (cp
, "function"))
4648 cp
= skip_spaces (cp
+1);
4652 while (!notinname (*cp
))
4654 make_tag (name
, cp
- name
, TRUE
,
4655 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4658 search_identifier
= TRUE
;
4660 else if (LOOKING_AT (cp
, "class"))
4665 while (*cp
!= '\0' && !iswhite (*cp
))
4667 make_tag (name
, cp
- name
, FALSE
,
4668 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4671 search_identifier
= TRUE
;
4673 else if (strneq (cp
, "define", 6)
4674 && (cp
= skip_spaces (cp
+6))
4676 && (*cp
== '"' || *cp
== '\''))
4680 while (*cp
!= quote
&& *cp
!= '\0')
4682 make_tag (name
, cp
- name
, FALSE
,
4683 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4686 && LOOKING_AT (cp
, "var")
4690 while (!notinname(*cp
))
4692 make_tag (name
, cp
- name
, FALSE
,
4693 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4700 * Cobol tag functions
4701 * We could look for anything that could be a paragraph name.
4702 * i.e. anything that starts in column 8 is one word and ends in a full stop.
4703 * Idea by Corny de Souza (1993)
4706 Cobol_paragraphs (inf
)
4709 register char *bp
, *ep
;
4711 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4717 /* If eoln, compiler option or comment ignore whole line. */
4718 if (bp
[-1] != ' ' || !ISALNUM (bp
[0]))
4721 for (ep
= bp
; ISALNUM (*ep
) || *ep
== '-'; ep
++)
4724 make_tag (bp
, ep
- bp
, TRUE
,
4725 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
4732 * Ideas by Assar Westerlund <assar@sics.se> (2001)
4735 Makefile_targets (inf
)
4740 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4742 if (*bp
== '\t' || *bp
== '#')
4744 while (*bp
!= '\0' && *bp
!= '=' && *bp
!= ':')
4746 if (*bp
== ':' || (globals
&& *bp
== '='))
4748 /* We should detect if there is more than one tag, but we do not.
4749 We just skip initial and final spaces. */
4750 char * namestart
= skip_spaces (lb
.buffer
);
4751 while (--bp
> namestart
)
4752 if (!notinname (*bp
))
4754 make_tag (namestart
, bp
- namestart
+ 1, TRUE
,
4755 lb
.buffer
, bp
- lb
.buffer
+ 2, lineno
, linecharno
);
4763 * Original code by Mosur K. Mohan (1989)
4765 * Locates tags for procedures & functions. Doesn't do any type- or
4766 * var-definitions. It does look for the keyword "extern" or
4767 * "forward" immediately following the procedure statement; if found,
4768 * the tag is skipped.
4771 Pascal_functions (inf
)
4774 linebuffer tline
; /* mostly copied from C_entries */
4776 int save_lineno
, namelen
, taglen
;
4779 bool /* each of these flags is TRUE if: */
4780 incomment
, /* point is inside a comment */
4781 inquote
, /* point is inside '..' string */
4782 get_tagname
, /* point is after PROCEDURE/FUNCTION
4783 keyword, so next item = potential tag */
4784 found_tag
, /* point is after a potential tag */
4785 inparms
, /* point is within parameter-list */
4786 verify_tag
; /* point has passed the parm-list, so the
4787 next token will determine whether this
4788 is a FORWARD/EXTERN to be ignored, or
4789 whether it is a real tag */
4791 save_lcno
= save_lineno
= namelen
= taglen
= 0; /* keep compiler quiet */
4792 name
= NULL
; /* keep compiler quiet */
4795 linebuffer_init (&tline
);
4797 incomment
= inquote
= FALSE
;
4798 found_tag
= FALSE
; /* have a proc name; check if extern */
4799 get_tagname
= FALSE
; /* found "procedure" keyword */
4800 inparms
= FALSE
; /* found '(' after "proc" */
4801 verify_tag
= FALSE
; /* check if "extern" is ahead */
4804 while (!feof (inf
)) /* long main loop to get next char */
4807 if (c
== '\0') /* if end of line */
4809 readline (&lb
, inf
);
4813 if (!((found_tag
&& verify_tag
)
4815 c
= *dbp
++; /* only if don't need *dbp pointing
4816 to the beginning of the name of
4817 the procedure or function */
4821 if (c
== '}') /* within { } comments */
4823 else if (c
== '*' && *dbp
== ')') /* within (* *) comments */
4840 inquote
= TRUE
; /* found first quote */
4842 case '{': /* found open { comment */
4846 if (*dbp
== '*') /* found open (* comment */
4851 else if (found_tag
) /* found '(' after tag, i.e., parm-list */
4854 case ')': /* end of parms list */
4859 if (found_tag
&& !inparms
) /* end of proc or fn stmt */
4866 if (found_tag
&& verify_tag
&& (*dbp
!= ' '))
4868 /* Check if this is an "extern" declaration. */
4871 if (lowcase (*dbp
== 'e'))
4873 if (nocase_tail ("extern")) /* superfluous, really! */
4879 else if (lowcase (*dbp
) == 'f')
4881 if (nocase_tail ("forward")) /* check for forward reference */
4887 if (found_tag
&& verify_tag
) /* not external proc, so make tag */
4891 make_tag (name
, namelen
, TRUE
,
4892 tline
.buffer
, taglen
, save_lineno
, save_lcno
);
4896 if (get_tagname
) /* grab name of proc or fn */
4903 /* Find block name. */
4904 for (cp
= dbp
+ 1; *cp
!= '\0' && !endtoken (*cp
); cp
++)
4907 /* Save all values for later tagging. */
4908 linebuffer_setlen (&tline
, lb
.len
);
4909 strcpy (tline
.buffer
, lb
.buffer
);
4910 save_lineno
= lineno
;
4911 save_lcno
= linecharno
;
4912 name
= tline
.buffer
+ (dbp
- lb
.buffer
);
4914 taglen
= cp
- lb
.buffer
+ 1;
4916 dbp
= cp
; /* set dbp to e-o-token */
4917 get_tagname
= FALSE
;
4921 /* And proceed to check for "extern". */
4923 else if (!incomment
&& !inquote
&& !found_tag
)
4925 /* Check for proc/fn keywords. */
4926 switch (lowcase (c
))
4929 if (nocase_tail ("rocedure")) /* c = 'p', dbp has advanced */
4933 if (nocase_tail ("unction"))
4938 } /* while not eof */
4940 free (tline
.buffer
);
4945 * Lisp tag functions
4946 * look for (def or (DEF, quote or QUOTE
4949 static void L_getit
__P((void));
4954 if (*dbp
== '\'') /* Skip prefix quote */
4956 else if (*dbp
== '(')
4959 /* Try to skip "(quote " */
4960 if (!LOOKING_AT (dbp
, "quote") && !LOOKING_AT (dbp
, "QUOTE"))
4961 /* Ok, then skip "(" before name in (defstruct (foo)) */
4962 dbp
= skip_spaces (dbp
);
4964 get_tag (dbp
, NULL
);
4968 Lisp_functions (inf
)
4971 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4976 if (strneq (dbp
+1, "def", 3) || strneq (dbp
+1, "DEF", 3))
4978 dbp
= skip_non_spaces (dbp
);
4979 dbp
= skip_spaces (dbp
);
4984 /* Check for (foo::defmumble name-defined ... */
4987 while (!notinname (*dbp
) && *dbp
!= ':');
4992 while (*dbp
== ':');
4994 if (strneq (dbp
, "def", 3) || strneq (dbp
, "DEF", 3))
4996 dbp
= skip_non_spaces (dbp
);
4997 dbp
= skip_spaces (dbp
);
5007 * Lua script language parsing
5008 * Original code by David A. Capello <dacap@users.sourceforge.net> (2004)
5010 * "function" and "local function" are tags if they start at column 1.
5018 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5020 if (bp
[0] != 'f' && bp
[0] != 'l')
5023 (void)LOOKING_AT (bp
, "local"); /* skip possible "local" */
5025 if (LOOKING_AT (bp
, "function"))
5033 * Just look for lines where the first character is '/'
5034 * Also look at "defineps" for PSWrap
5036 * Richard Mlynarik <mly@adoc.xerox.com> (1997)
5037 * Masatake Yamato <masata-y@is.aist-nara.ac.jp> (1999)
5043 register char *bp
, *ep
;
5045 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5050 *ep
!= '\0' && *ep
!= ' ' && *ep
!= '{';
5053 make_tag (bp
, ep
- bp
, TRUE
,
5054 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
5056 else if (LOOKING_AT (bp
, "defineps"))
5064 * Ignore anything after \ followed by space or in ( )
5065 * Look for words defined by :
5066 * Look for constant, code, create, defer, value, and variable
5067 * OBP extensions: Look for buffer:, field,
5068 * Ideas by Eduardo Horvath <eeh@netbsd.org> (2004)
5076 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5077 while ((bp
= skip_spaces (bp
))[0] != '\0')
5078 if (bp
[0] == '\\' && iswhite(bp
[1]))
5079 break; /* read next line */
5080 else if (bp
[0] == '(' && iswhite(bp
[1]))
5081 do /* skip to ) or eol */
5083 while (*bp
!= ')' && *bp
!= '\0');
5084 else if ((bp
[0] == ':' && iswhite(bp
[1]) && bp
++)
5085 || LOOKING_AT_NOCASE (bp
, "constant")
5086 || LOOKING_AT_NOCASE (bp
, "code")
5087 || LOOKING_AT_NOCASE (bp
, "create")
5088 || LOOKING_AT_NOCASE (bp
, "defer")
5089 || LOOKING_AT_NOCASE (bp
, "value")
5090 || LOOKING_AT_NOCASE (bp
, "variable")
5091 || LOOKING_AT_NOCASE (bp
, "buffer:")
5092 || LOOKING_AT_NOCASE (bp
, "field"))
5093 get_tag (skip_spaces (bp
), NULL
); /* Yay! A definition! */
5095 bp
= skip_non_spaces (bp
);
5100 * Scheme tag functions
5101 * look for (def... xyzzy
5103 * (def ... ((...(xyzzy ....
5105 * Original code by Ken Haase (1985?)
5108 Scheme_functions (inf
)
5113 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5115 if (strneq (bp
, "(def", 4) || strneq (bp
, "(DEF", 4))
5117 bp
= skip_non_spaces (bp
+4);
5118 /* Skip over open parens and white space */
5119 while (notinname (*bp
))
5123 if (LOOKING_AT (bp
, "(SET!") || LOOKING_AT (bp
, "(set!"))
5129 /* Find tags in TeX and LaTeX input files. */
5131 /* TEX_toktab is a table of TeX control sequences that define tags.
5132 * Each entry records one such control sequence.
5134 * Original code from who knows whom.
5136 * Stefan Monnier (2002)
5139 static linebuffer
*TEX_toktab
= NULL
; /* Table with tag tokens */
5141 /* Default set of control sequences to put into TEX_toktab.
5142 The value of environment var TEXTAGS is prepended to this. */
5143 static char *TEX_defenv
= "\
5144 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
5145 :part:appendix:entry:index:def\
5146 :newcommand:renewcommand:newenvironment:renewenvironment";
5148 static void TEX_mode
__P((FILE *));
5149 static void TEX_decode_env
__P((char *, char *));
5151 static char TEX_esc
= '\\';
5152 static char TEX_opgrp
= '{';
5153 static char TEX_clgrp
= '}';
5156 * TeX/LaTeX scanning loop.
5165 /* Select either \ or ! as escape character. */
5168 /* Initialize token table once from environment. */
5169 if (TEX_toktab
== NULL
)
5170 TEX_decode_env ("TEXTAGS", TEX_defenv
);
5172 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5174 /* Look at each TEX keyword in line. */
5177 /* Look for a TEX escape. */
5178 while (*cp
++ != TEX_esc
)
5179 if (cp
[-1] == '\0' || cp
[-1] == '%')
5182 for (key
= TEX_toktab
; key
->buffer
!= NULL
; key
++)
5183 if (strneq (cp
, key
->buffer
, key
->len
))
5186 int namelen
, linelen
;
5189 cp
= skip_spaces (cp
+ key
->len
);
5190 if (*cp
== TEX_opgrp
)
5196 (!iswhite (*p
) && *p
!= '#' &&
5197 *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
);
5202 if (!opgrp
|| *p
== TEX_clgrp
)
5204 while (*p
!= '\0' && *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
)
5206 linelen
= p
- lb
.buffer
+ 1;
5208 make_tag (cp
, namelen
, TRUE
,
5209 lb
.buffer
, linelen
, lineno
, linecharno
);
5210 goto tex_next_line
; /* We only tag a line once */
5218 #define TEX_LESC '\\'
5219 #define TEX_SESC '!'
5221 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
5222 chars accordingly. */
5229 while ((c
= getc (inf
)) != EOF
)
5231 /* Skip to next line if we hit the TeX comment char. */
5233 while (c
!= '\n' && c
!= EOF
)
5235 else if (c
== TEX_LESC
|| c
== TEX_SESC
)
5251 /* If the input file is compressed, inf is a pipe, and rewind may fail.
5252 No attempt is made to correct the situation. */
5256 /* Read environment and prepend it to the default string.
5257 Build token table. */
5259 TEX_decode_env (evarname
, defenv
)
5263 register char *env
, *p
;
5266 /* Append default string to environment. */
5267 env
= getenv (evarname
);
5273 env
= concat (oldenv
, defenv
, "");
5276 /* Allocate a token table */
5277 for (len
= 1, p
= env
; p
;)
5278 if ((p
= etags_strchr (p
, ':')) && *++p
!= '\0')
5280 TEX_toktab
= xnew (len
, linebuffer
);
5282 /* Unpack environment string into token table. Be careful about */
5283 /* zero-length strings (leading ':', "::" and trailing ':') */
5284 for (i
= 0; *env
!= '\0';)
5286 p
= etags_strchr (env
, ':');
5287 if (!p
) /* End of environment string. */
5288 p
= env
+ strlen (env
);
5290 { /* Only non-zero strings. */
5291 TEX_toktab
[i
].buffer
= savenstr (env
, p
- env
);
5292 TEX_toktab
[i
].len
= p
- env
;
5299 TEX_toktab
[i
].buffer
= NULL
; /* Mark end of table. */
5300 TEX_toktab
[i
].len
= 0;
5307 /* Texinfo support. Dave Love, Mar. 2000. */
5313 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5314 if (LOOKING_AT (cp
, "@node"))
5317 while (*cp
!= '\0' && *cp
!= ',')
5319 make_tag (start
, cp
- start
, TRUE
,
5320 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
5327 * Contents of <title>, <h1>, <h2>, <h3> are tags.
5328 * Contents of <a name=xxx> are tags with name xxx.
5330 * Francesco Potortì, 2002.
5336 bool getnext
= FALSE
; /* next text outside of HTML tags is a tag */
5337 bool skiptag
= FALSE
; /* skip to the end of the current HTML tag */
5338 bool intag
= FALSE
; /* inside an html tag, looking for ID= */
5339 bool inanchor
= FALSE
; /* when INTAG, is an anchor, look for NAME= */
5343 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5345 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
5346 for (;;) /* loop on the same line */
5348 if (skiptag
) /* skip HTML tag */
5350 while (*dbp
!= '\0' && *dbp
!= '>')
5356 continue; /* look on the same line */
5358 break; /* go to next line */
5361 else if (intag
) /* look for "name=" or "id=" */
5363 while (*dbp
!= '\0' && *dbp
!= '>'
5364 && lowcase (*dbp
) != 'n' && lowcase (*dbp
) != 'i')
5367 break; /* go to next line */
5372 continue; /* look on the same line */
5374 if ((inanchor
&& LOOKING_AT_NOCASE (dbp
, "name="))
5375 || LOOKING_AT_NOCASE (dbp
, "id="))
5377 bool quoted
= (dbp
[0] == '"');
5380 for (end
= ++dbp
; *end
!= '\0' && *end
!= '"'; end
++)
5383 for (end
= dbp
; *end
!= '\0' && intoken (*end
); end
++)
5385 linebuffer_setlen (&token_name
, end
- dbp
);
5386 strncpy (token_name
.buffer
, dbp
, end
- dbp
);
5387 token_name
.buffer
[end
- dbp
] = '\0';
5390 intag
= FALSE
; /* we found what we looked for */
5391 skiptag
= TRUE
; /* skip to the end of the tag */
5392 getnext
= TRUE
; /* then grab the text */
5393 continue; /* look on the same line */
5398 else if (getnext
) /* grab next tokens and tag them */
5400 dbp
= skip_spaces (dbp
);
5402 break; /* go to next line */
5406 inanchor
= (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]));
5407 continue; /* look on the same line */
5410 for (end
= dbp
+ 1; *end
!= '\0' && *end
!= '<'; end
++)
5412 make_tag (token_name
.buffer
, token_name
.len
, TRUE
,
5413 dbp
, end
- dbp
, lineno
, linecharno
);
5414 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5416 break; /* go to next line */
5419 else /* look for an interesting HTML tag */
5421 while (*dbp
!= '\0' && *dbp
!= '<')
5424 break; /* go to next line */
5426 if (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]))
5429 continue; /* look on the same line */
5431 else if (LOOKING_AT_NOCASE (dbp
, "<title>")
5432 || LOOKING_AT_NOCASE (dbp
, "<h1>")
5433 || LOOKING_AT_NOCASE (dbp
, "<h2>")
5434 || LOOKING_AT_NOCASE (dbp
, "<h3>"))
5438 continue; /* look on the same line */
5449 * Assumes that the predicate or rule starts at column 0.
5450 * Only the first clause of a predicate or rule is added.
5451 * Original code by Sunichirou Sugou (1989)
5452 * Rewritten by Anders Lindgren (1996)
5454 static int prolog_pr
__P((char *, char *));
5455 static void prolog_skip_comment
__P((linebuffer
*, FILE *));
5456 static int prolog_atom
__P((char *, int));
5459 Prolog_functions (inf
)
5470 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5472 if (cp
[0] == '\0') /* Empty line */
5474 else if (iswhite (cp
[0])) /* Not a predicate */
5476 else if (cp
[0] == '/' && cp
[1] == '*') /* comment. */
5477 prolog_skip_comment (&lb
, inf
);
5478 else if ((len
= prolog_pr (cp
, last
)) > 0)
5480 /* Predicate or rule. Store the function name so that we
5481 only generate a tag for the first clause. */
5483 last
= xnew(len
+ 1, char);
5484 else if (len
+ 1 > allocated
)
5485 xrnew (last
, len
+ 1, char);
5486 allocated
= len
+ 1;
5487 strncpy (last
, cp
, len
);
5497 prolog_skip_comment (plb
, inf
)
5505 for (cp
= plb
->buffer
; *cp
!= '\0'; cp
++)
5506 if (cp
[0] == '*' && cp
[1] == '/')
5508 readline (plb
, inf
);
5514 * A predicate or rule definition is added if it matches:
5515 * <beginning of line><Prolog Atom><whitespace>(
5516 * or <beginning of line><Prolog Atom><whitespace>:-
5518 * It is added to the tags database if it doesn't match the
5519 * name of the previous clause header.
5521 * Return the size of the name of the predicate or rule, or 0 if no
5527 char *last
; /* Name of last clause. */
5532 pos
= prolog_atom (s
, 0);
5537 pos
= skip_spaces (s
+ pos
) - s
;
5540 || (s
[pos
] == '(' && (pos
+= 1))
5541 || (s
[pos
] == ':' && s
[pos
+ 1] == '-' && (pos
+= 2)))
5542 && (last
== NULL
/* save only the first clause */
5543 || len
!= (int)strlen (last
)
5544 || !strneq (s
, last
, len
)))
5546 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5554 * Consume a Prolog atom.
5555 * Return the number of bytes consumed, or -1 if there was an error.
5557 * A prolog atom, in this context, could be one of:
5558 * - An alphanumeric sequence, starting with a lower case letter.
5559 * - A quoted arbitrary string. Single quotes can escape themselves.
5560 * Backslash quotes everything.
5563 prolog_atom (s
, pos
)
5571 if (ISLOWER(s
[pos
]) || (s
[pos
] == '_'))
5573 /* The atom is unquoted. */
5575 while (ISALNUM(s
[pos
]) || (s
[pos
] == '_'))
5579 return pos
- origpos
;
5581 else if (s
[pos
] == '\'')
5592 pos
++; /* A double quote */
5594 else if (s
[pos
] == '\0')
5595 /* Multiline quoted atoms are ignored. */
5597 else if (s
[pos
] == '\\')
5599 if (s
[pos
+1] == '\0')
5606 return pos
- origpos
;
5614 * Support for Erlang
5616 * Generates tags for functions, defines, and records.
5617 * Assumes that Erlang functions start at column 0.
5618 * Original code by Anders Lindgren (1996)
5620 static int erlang_func
__P((char *, char *));
5621 static void erlang_attribute
__P((char *));
5622 static int erlang_atom
__P((char *));
5625 Erlang_functions (inf
)
5636 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5638 if (cp
[0] == '\0') /* Empty line */
5640 else if (iswhite (cp
[0])) /* Not function nor attribute */
5642 else if (cp
[0] == '%') /* comment */
5644 else if (cp
[0] == '"') /* Sometimes, strings start in column one */
5646 else if (cp
[0] == '-') /* attribute, e.g. "-define" */
5648 erlang_attribute (cp
);
5655 else if ((len
= erlang_func (cp
, last
)) > 0)
5658 * Function. Store the function name so that we only
5659 * generates a tag for the first clause.
5662 last
= xnew (len
+ 1, char);
5663 else if (len
+ 1 > allocated
)
5664 xrnew (last
, len
+ 1, char);
5665 allocated
= len
+ 1;
5666 strncpy (last
, cp
, len
);
5676 * A function definition is added if it matches:
5677 * <beginning of line><Erlang Atom><whitespace>(
5679 * It is added to the tags database if it doesn't match the
5680 * name of the previous clause header.
5682 * Return the size of the name of the function, or 0 if no function
5686 erlang_func (s
, last
)
5688 char *last
; /* Name of last clause. */
5693 pos
= erlang_atom (s
);
5698 pos
= skip_spaces (s
+ pos
) - s
;
5700 /* Save only the first clause. */
5703 || len
!= (int)strlen (last
)
5704 || !strneq (s
, last
, len
)))
5706 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5715 * Handle attributes. Currently, tags are generated for defines
5718 * They are on the form:
5719 * -define(foo, bar).
5720 * -define(Foo(M, N), M+N).
5721 * -record(graph, {vtab = notable, cyclic = true}).
5724 erlang_attribute (s
)
5729 if ((LOOKING_AT (cp
, "-define") || LOOKING_AT (cp
, "-record"))
5732 int len
= erlang_atom (skip_spaces (cp
));
5734 make_tag (cp
, len
, TRUE
, s
, cp
+ len
- s
, lineno
, linecharno
);
5741 * Consume an Erlang atom (or variable).
5742 * Return the number of bytes consumed, or -1 if there was an error.
5750 if (ISALPHA (s
[pos
]) || s
[pos
] == '_')
5752 /* The atom is unquoted. */
5755 while (ISALNUM (s
[pos
]) || s
[pos
] == '_');
5757 else if (s
[pos
] == '\'')
5759 for (pos
++; s
[pos
] != '\''; pos
++)
5760 if (s
[pos
] == '\0' /* multiline quoted atoms are ignored */
5761 || (s
[pos
] == '\\' && s
[++pos
] == '\0'))
5770 static char *scan_separators
__P((char *));
5771 static void add_regex
__P((char *, language
*));
5772 static char *substitute
__P((char *, char *, struct re_registers
*));
5775 * Take a string like "/blah/" and turn it into "blah", verifying
5776 * that the first and last characters are the same, and handling
5777 * quoted separator characters. Actually, stops on the occurrence of
5778 * an unquoted separator. Also process \t, \n, etc. and turn into
5779 * appropriate characters. Works in place. Null terminates name string.
5780 * Returns pointer to terminating separator, or NULL for
5781 * unterminated regexps.
5784 scan_separators (name
)
5788 char *copyto
= name
;
5789 bool quoted
= FALSE
;
5791 for (++name
; *name
!= '\0'; ++name
)
5797 case 'a': *copyto
++ = '\007'; break; /* BEL (bell) */
5798 case 'b': *copyto
++ = '\b'; break; /* BS (back space) */
5799 case 'd': *copyto
++ = 0177; break; /* DEL (delete) */
5800 case 'e': *copyto
++ = 033; break; /* ESC (delete) */
5801 case 'f': *copyto
++ = '\f'; break; /* FF (form feed) */
5802 case 'n': *copyto
++ = '\n'; break; /* NL (new line) */
5803 case 'r': *copyto
++ = '\r'; break; /* CR (carriage return) */
5804 case 't': *copyto
++ = '\t'; break; /* TAB (horizontal tab) */
5805 case 'v': *copyto
++ = '\v'; break; /* VT (vertical tab) */
5811 /* Something else is quoted, so preserve the quote. */
5819 else if (*name
== '\\')
5821 else if (*name
== sep
)
5827 name
= NULL
; /* signal unterminated regexp */
5829 /* Terminate copied string. */
5834 /* Look at the argument of --regex or --no-regex and do the right
5835 thing. Same for each line of a regexp file. */
5837 analyse_regex (regex_arg
)
5840 if (regex_arg
== NULL
)
5842 free_regexps (); /* --no-regex: remove existing regexps */
5846 /* A real --regexp option or a line in a regexp file. */
5847 switch (regex_arg
[0])
5849 /* Comments in regexp file or null arg to --regex. */
5855 /* Read a regex file. This is recursive and may result in a
5856 loop, which will stop when the file descriptors are exhausted. */
5860 linebuffer regexbuf
;
5861 char *regexfile
= regex_arg
+ 1;
5863 /* regexfile is a file containing regexps, one per line. */
5864 regexfp
= fopen (regexfile
, "r");
5865 if (regexfp
== NULL
)
5870 linebuffer_init (®exbuf
);
5871 while (readline_internal (®exbuf
, regexfp
) > 0)
5872 analyse_regex (regexbuf
.buffer
);
5873 free (regexbuf
.buffer
);
5878 /* Regexp to be used for a specific language only. */
5882 char *lang_name
= regex_arg
+ 1;
5885 for (cp
= lang_name
; *cp
!= '}'; cp
++)
5888 error ("unterminated language name in regex: %s", regex_arg
);
5892 lang
= get_language_from_langname (lang_name
);
5895 add_regex (cp
, lang
);
5899 /* Regexp to be used for any language. */
5901 add_regex (regex_arg
, NULL
);
5906 /* Separate the regexp pattern, compile it,
5907 and care for optional name and modifiers. */
5909 add_regex (regexp_pattern
, lang
)
5910 char *regexp_pattern
;
5913 static struct re_pattern_buffer zeropattern
;
5914 char sep
, *pat
, *name
, *modifiers
;
5916 struct re_pattern_buffer
*patbuf
;
5919 force_explicit_name
= TRUE
, /* do not use implicit tag names */
5920 ignore_case
= FALSE
, /* case is significant */
5921 multi_line
= FALSE
, /* matches are done one line at a time */
5922 single_line
= FALSE
; /* dot does not match newline */
5925 if (strlen(regexp_pattern
) < 3)
5927 error ("null regexp", (char *)NULL
);
5930 sep
= regexp_pattern
[0];
5931 name
= scan_separators (regexp_pattern
);
5934 error ("%s: unterminated regexp", regexp_pattern
);
5939 error ("null name for regexp \"%s\"", regexp_pattern
);
5942 modifiers
= scan_separators (name
);
5943 if (modifiers
== NULL
) /* no terminating separator --> no name */
5949 modifiers
+= 1; /* skip separator */
5951 /* Parse regex modifiers. */
5952 for (; modifiers
[0] != '\0'; modifiers
++)
5953 switch (modifiers
[0])
5956 if (modifiers
== name
)
5957 error ("forcing explicit tag name but no name, ignoring", NULL
);
5958 force_explicit_name
= TRUE
;
5968 need_filebuf
= TRUE
;
5973 wrongmod
[0] = modifiers
[0];
5975 error ("invalid regexp modifier `%s', ignoring", wrongmod
);
5980 patbuf
= xnew (1, struct re_pattern_buffer
);
5981 *patbuf
= zeropattern
;
5984 static char lc_trans
[CHARS
];
5986 for (i
= 0; i
< CHARS
; i
++)
5987 lc_trans
[i
] = lowcase (i
);
5988 patbuf
->translate
= lc_trans
; /* translation table to fold case */
5992 pat
= concat ("^", regexp_pattern
, ""); /* anchor to beginning of line */
5994 pat
= regexp_pattern
;
5997 re_set_syntax (RE_SYNTAX_EMACS
| RE_DOT_NEWLINE
);
5999 re_set_syntax (RE_SYNTAX_EMACS
);
6001 err
= re_compile_pattern (pat
, strlen (regexp_pattern
), patbuf
);
6006 error ("%s while compiling pattern", err
);
6011 p_head
= xnew (1, regexp
);
6012 p_head
->pattern
= savestr (regexp_pattern
);
6013 p_head
->p_next
= rp
;
6014 p_head
->lang
= lang
;
6015 p_head
->pat
= patbuf
;
6016 p_head
->name
= savestr (name
);
6017 p_head
->error_signaled
= FALSE
;
6018 p_head
->force_explicit_name
= force_explicit_name
;
6019 p_head
->ignore_case
= ignore_case
;
6020 p_head
->multi_line
= multi_line
;
6024 * Do the substitutions indicated by the regular expression and
6028 substitute (in
, out
, regs
)
6030 struct re_registers
*regs
;
6033 int size
, dig
, diglen
;
6036 size
= strlen (out
);
6038 /* Pass 1: figure out how much to allocate by finding all \N strings. */
6039 if (out
[size
- 1] == '\\')
6040 fatal ("pattern error in \"%s\"", out
);
6041 for (t
= etags_strchr (out
, '\\');
6043 t
= etags_strchr (t
+ 2, '\\'))
6047 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
6053 /* Allocate space and do the substitutions. */
6055 result
= xnew (size
+ 1, char);
6057 for (t
= result
; *out
!= '\0'; out
++)
6058 if (*out
== '\\' && ISDIGIT (*++out
))
6061 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
6062 strncpy (t
, in
+ regs
->start
[dig
], diglen
);
6069 assert (t
<= result
+ size
);
6070 assert (t
- result
== (int)strlen (result
));
6075 /* Deallocate all regexps. */
6080 while (p_head
!= NULL
)
6082 rp
= p_head
->p_next
;
6083 free (p_head
->pattern
);
6084 free (p_head
->name
);
6092 * Reads the whole file as a single string from `filebuf' and looks for
6093 * multi-line regular expressions, creating tags on matches.
6094 * readline already dealt with normal regexps.
6096 * Idea by Ben Wing <ben@666.com> (2002).
6099 regex_tag_multiline ()
6101 char *buffer
= filebuf
.buffer
;
6105 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
6109 if (!rp
->multi_line
)
6110 continue; /* skip normal regexps */
6112 /* Generic initialisations before parsing file from memory. */
6113 lineno
= 1; /* reset global line number */
6114 charno
= 0; /* reset global char number */
6115 linecharno
= 0; /* reset global char number of line start */
6117 /* Only use generic regexps or those for the current language. */
6118 if (rp
->lang
!= NULL
&& rp
->lang
!= curfdp
->lang
)
6121 while (match
>= 0 && match
< filebuf
.len
)
6123 match
= re_search (rp
->pat
, buffer
, filebuf
.len
, charno
,
6124 filebuf
.len
- match
, &rp
->regs
);
6129 if (!rp
->error_signaled
)
6131 error ("regexp stack overflow while matching \"%s\"",
6133 rp
->error_signaled
= TRUE
;
6140 if (match
== rp
->regs
.end
[0])
6142 if (!rp
->error_signaled
)
6144 error ("regexp matches the empty string: \"%s\"",
6146 rp
->error_signaled
= TRUE
;
6148 match
= -3; /* exit from while loop */
6152 /* Match occurred. Construct a tag. */
6153 while (charno
< rp
->regs
.end
[0])
6154 if (buffer
[charno
++] == '\n')
6155 lineno
++, linecharno
= charno
;
6157 if (name
[0] == '\0')
6159 else /* make a named tag */
6160 name
= substitute (buffer
, rp
->name
, &rp
->regs
);
6161 if (rp
->force_explicit_name
)
6162 /* Force explicit tag name, if a name is there. */
6163 pfnote (name
, TRUE
, buffer
+ linecharno
,
6164 charno
- linecharno
+ 1, lineno
, linecharno
);
6166 make_tag (name
, strlen (name
), TRUE
, buffer
+ linecharno
,
6167 charno
- linecharno
+ 1, lineno
, linecharno
);
6179 register int len
= 0;
6181 while (*cp
!= '\0' && lowcase (*cp
) == lowcase (dbp
[len
]))
6183 if (*cp
== '\0' && !intoken (dbp
[len
]))
6192 get_tag (bp
, namepp
)
6196 register char *cp
= bp
;
6200 /* Go till you get to white space or a syntactic break */
6201 for (cp
= bp
+ 1; !notinname (*cp
); cp
++)
6203 make_tag (bp
, cp
- bp
, TRUE
,
6204 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
6208 *namepp
= savenstr (bp
, cp
- bp
);
6212 * Read a line of text from `stream' into `lbp', excluding the
6213 * newline or CR-NL, if any. Return the number of characters read from
6214 * `stream', which is the length of the line including the newline.
6216 * On DOS or Windows we do not count the CR character, if any before the
6217 * NL, in the returned length; this mirrors the behavior of Emacs on those
6218 * platforms (for text files, it translates CR-NL to NL as it reads in the
6221 * If multi-line regular expressions are requested, each line read is
6222 * appended to `filebuf'.
6225 readline_internal (lbp
, stream
)
6227 register FILE *stream
;
6229 char *buffer
= lbp
->buffer
;
6230 register char *p
= lbp
->buffer
;
6231 register char *pend
;
6234 pend
= p
+ lbp
->size
; /* Separate to avoid 386/IX compiler bug. */
6238 register int c
= getc (stream
);
6241 /* We're at the end of linebuffer: expand it. */
6243 xrnew (buffer
, lbp
->size
, char);
6244 p
+= buffer
- lbp
->buffer
;
6245 pend
= buffer
+ lbp
->size
;
6246 lbp
->buffer
= buffer
;
6256 if (p
> buffer
&& p
[-1] == '\r')
6260 /* Assume CRLF->LF translation will be performed by Emacs
6261 when loading this file, so CRs won't appear in the buffer.
6262 It would be cleaner to compensate within Emacs;
6263 however, Emacs does not know how many CRs were deleted
6264 before any given point in the file. */
6279 lbp
->len
= p
- buffer
;
6281 if (need_filebuf
/* we need filebuf for multi-line regexps */
6282 && chars_deleted
> 0) /* not at EOF */
6284 while (filebuf
.size
<= filebuf
.len
+ lbp
->len
+ 1) /* +1 for \n */
6286 /* Expand filebuf. */
6288 xrnew (filebuf
.buffer
, filebuf
.size
, char);
6290 strncpy (filebuf
.buffer
+ filebuf
.len
, lbp
->buffer
, lbp
->len
);
6291 filebuf
.len
+= lbp
->len
;
6292 filebuf
.buffer
[filebuf
.len
++] = '\n';
6293 filebuf
.buffer
[filebuf
.len
] = '\0';
6296 return lbp
->len
+ chars_deleted
;
6300 * Like readline_internal, above, but in addition try to match the
6301 * input line against relevant regular expressions and manage #line
6305 readline (lbp
, stream
)
6311 linecharno
= charno
; /* update global char number of line start */
6312 result
= readline_internal (lbp
, stream
); /* read line */
6313 lineno
+= 1; /* increment global line number */
6314 charno
+= result
; /* increment global char number */
6316 /* Honour #line directives. */
6317 if (!no_line_directive
)
6319 static bool discard_until_line_directive
;
6321 /* Check whether this is a #line directive. */
6322 if (result
> 12 && strneq (lbp
->buffer
, "#line ", 6))
6327 if (sscanf (lbp
->buffer
, "#line %u \"%n", &lno
, &start
) >= 1
6328 && start
> 0) /* double quote character found */
6330 char *endp
= lbp
->buffer
+ start
;
6332 while ((endp
= etags_strchr (endp
, '"')) != NULL
6333 && endp
[-1] == '\\')
6336 /* Ok, this is a real #line directive. Let's deal with it. */
6338 char *taggedabsname
; /* absolute name of original file */
6339 char *taggedfname
; /* name of original file as given */
6340 char *name
; /* temp var */
6342 discard_until_line_directive
= FALSE
; /* found it */
6343 name
= lbp
->buffer
+ start
;
6345 canonicalize_filename (name
); /* for DOS */
6346 taggedabsname
= absolute_filename (name
, tagfiledir
);
6347 if (filename_is_absolute (name
)
6348 || filename_is_absolute (curfdp
->infname
))
6349 taggedfname
= savestr (taggedabsname
);
6351 taggedfname
= relative_filename (taggedabsname
,tagfiledir
);
6353 if (streq (curfdp
->taggedfname
, taggedfname
))
6354 /* The #line directive is only a line number change. We
6355 deal with this afterwards. */
6358 /* The tags following this #line directive should be
6359 attributed to taggedfname. In order to do this, set
6360 curfdp accordingly. */
6362 fdesc
*fdp
; /* file description pointer */
6364 /* Go look for a file description already set up for the
6365 file indicated in the #line directive. If there is
6366 one, use it from now until the next #line
6368 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6369 if (streq (fdp
->infname
, curfdp
->infname
)
6370 && streq (fdp
->taggedfname
, taggedfname
))
6371 /* If we remove the second test above (after the &&)
6372 then all entries pertaining to the same file are
6373 coalesced in the tags file. If we use it, then
6374 entries pertaining to the same file but generated
6375 from different files (via #line directives) will
6376 go into separate sections in the tags file. These
6377 alternatives look equivalent. The first one
6378 destroys some apparently useless information. */
6384 /* Else, if we already tagged the real file, skip all
6385 input lines until the next #line directive. */
6386 if (fdp
== NULL
) /* not found */
6387 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6388 if (streq (fdp
->infabsname
, taggedabsname
))
6390 discard_until_line_directive
= TRUE
;
6394 /* Else create a new file description and use that from
6395 now on, until the next #line directive. */
6396 if (fdp
== NULL
) /* not found */
6399 fdhead
= xnew (1, fdesc
);
6400 *fdhead
= *curfdp
; /* copy curr. file description */
6402 fdhead
->infname
= savestr (curfdp
->infname
);
6403 fdhead
->infabsname
= savestr (curfdp
->infabsname
);
6404 fdhead
->infabsdir
= savestr (curfdp
->infabsdir
);
6405 fdhead
->taggedfname
= taggedfname
;
6406 fdhead
->usecharno
= FALSE
;
6407 fdhead
->prop
= NULL
;
6408 fdhead
->written
= FALSE
;
6412 free (taggedabsname
);
6414 readline (lbp
, stream
);
6416 } /* if a real #line directive */
6417 } /* if #line is followed by a a number */
6418 } /* if line begins with "#line " */
6420 /* If we are here, no #line directive was found. */
6421 if (discard_until_line_directive
)
6425 /* Do a tail recursion on ourselves, thus discarding the contents
6426 of the line buffer. */
6427 readline (lbp
, stream
);
6431 discard_until_line_directive
= FALSE
;
6434 } /* if #line directives should be considered */
6441 /* Match against relevant regexps. */
6443 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
6445 /* Only use generic regexps or those for the current language.
6446 Also do not use multiline regexps, which is the job of
6447 regex_tag_multiline. */
6448 if ((rp
->lang
!= NULL
&& rp
->lang
!= fdhead
->lang
)
6452 match
= re_match (rp
->pat
, lbp
->buffer
, lbp
->len
, 0, &rp
->regs
);
6457 if (!rp
->error_signaled
)
6459 error ("regexp stack overflow while matching \"%s\"",
6461 rp
->error_signaled
= TRUE
;
6468 /* Empty string matched. */
6469 if (!rp
->error_signaled
)
6471 error ("regexp matches the empty string: \"%s\"", rp
->pattern
);
6472 rp
->error_signaled
= TRUE
;
6476 /* Match occurred. Construct a tag. */
6478 if (name
[0] == '\0')
6480 else /* make a named tag */
6481 name
= substitute (lbp
->buffer
, rp
->name
, &rp
->regs
);
6482 if (rp
->force_explicit_name
)
6483 /* Force explicit tag name, if a name is there. */
6484 pfnote (name
, TRUE
, lbp
->buffer
, match
, lineno
, linecharno
);
6486 make_tag (name
, strlen (name
), TRUE
,
6487 lbp
->buffer
, match
, lineno
, linecharno
);
6496 * Return a pointer to a space of size strlen(cp)+1 allocated
6497 * with xnew where the string CP has been copied.
6503 return savenstr (cp
, strlen (cp
));
6507 * Return a pointer to a space of size LEN+1 allocated with xnew where
6508 * the string CP has been copied for at most the first LEN characters.
6517 dp
= xnew (len
+ 1, char);
6518 strncpy (dp
, cp
, len
);
6524 * Return the ptr in sp at which the character c last
6525 * appears; NULL if not found
6527 * Identical to POSIX strrchr, included for portability.
6530 etags_strrchr (sp
, c
)
6531 register const char *sp
;
6534 register const char *r
;
6546 * Return the ptr in sp at which the character c first
6547 * appears; NULL if not found
6549 * Identical to POSIX strchr, included for portability.
6552 etags_strchr (sp
, c
)
6553 register const char *sp
;
6565 * Compare two strings, ignoring case for alphabetic characters.
6567 * Same as BSD's strcasecmp, included for portability.
6570 etags_strcasecmp (s1
, s2
)
6571 register const char *s1
;
6572 register const char *s2
;
6575 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6576 ? lowcase (*s1
) == lowcase (*s2
)
6580 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6581 ? lowcase (*s1
) - lowcase (*s2
)
6586 * Compare two strings, ignoring case for alphabetic characters.
6587 * Stop after a given number of characters
6589 * Same as BSD's strncasecmp, included for portability.
6592 etags_strncasecmp (s1
, s2
, n
)
6593 register const char *s1
;
6594 register const char *s2
;
6597 while (*s1
!= '\0' && n
-- > 0
6598 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6599 ? lowcase (*s1
) == lowcase (*s2
)
6606 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6607 ? lowcase (*s1
) - lowcase (*s2
)
6611 /* Skip spaces (end of string is not space), return new pointer. */
6616 while (iswhite (*cp
))
6621 /* Skip non spaces, except end of string, return new pointer. */
6623 skip_non_spaces (cp
)
6626 while (*cp
!= '\0' && !iswhite (*cp
))
6631 /* Print error message and exit. */
6637 exit (EXIT_FAILURE
);
6645 exit (EXIT_FAILURE
);
6649 suggest_asking_for_help ()
6651 fprintf (stderr
, "\tTry `%s %s' for a complete list of options.\n",
6652 progname
, NO_LONG_OPTIONS
? "-h" : "--help");
6653 exit (EXIT_FAILURE
);
6656 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
6659 const char *s1
, *s2
;
6661 fprintf (stderr
, "%s: ", progname
);
6662 fprintf (stderr
, s1
, s2
);
6663 fprintf (stderr
, "\n");
6666 /* Return a newly-allocated string whose contents
6667 concatenate those of s1, s2, s3. */
6672 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
6673 char *result
= xnew (len1
+ len2
+ len3
+ 1, char);
6675 strcpy (result
, s1
);
6676 strcpy (result
+ len1
, s2
);
6677 strcpy (result
+ len1
+ len2
, s3
);
6678 result
[len1
+ len2
+ len3
] = '\0';
6684 /* Does the same work as the system V getcwd, but does not need to
6685 guess the buffer size in advance. */
6691 char *path
= xnew (bufsize
, char);
6693 while (getcwd (path
, bufsize
) == NULL
)
6695 if (errno
!= ERANGE
)
6699 path
= xnew (bufsize
, char);
6702 canonicalize_filename (path
);
6705 #else /* not HAVE_GETCWD */
6708 char *p
, path
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
6712 for (p
= path
; *p
!= '\0'; p
++)
6718 return strdup (path
);
6719 #else /* not MSDOS */
6723 linebuffer_init (&path
);
6724 pipe
= (FILE *) popen ("pwd 2>/dev/null", "r");
6725 if (pipe
== NULL
|| readline_internal (&path
, pipe
) == 0)
6730 #endif /* not MSDOS */
6731 #endif /* not HAVE_GETCWD */
6734 /* Return a newly allocated string containing the file name of FILE
6735 relative to the absolute directory DIR (which should end with a slash). */
6737 relative_filename (file
, dir
)
6740 char *fp
, *dp
, *afn
, *res
;
6743 /* Find the common root of file and dir (with a trailing slash). */
6744 afn
= absolute_filename (file
, cwd
);
6747 while (*fp
++ == *dp
++)
6749 fp
--, dp
--; /* back to the first differing char */
6751 if (fp
== afn
&& afn
[0] != '/') /* cannot build a relative name */
6754 do /* look at the equal chars until '/' */
6758 /* Build a sequence of "../" strings for the resulting relative file name. */
6760 while ((dp
= etags_strchr (dp
+ 1, '/')) != NULL
)
6762 res
= xnew (3*i
+ strlen (fp
+ 1) + 1, char);
6765 strcat (res
, "../");
6767 /* Add the file name relative to the common root of file and dir. */
6768 strcat (res
, fp
+ 1);
6774 /* Return a newly allocated string containing the absolute file name
6775 of FILE given DIR (which should end with a slash). */
6777 absolute_filename (file
, dir
)
6780 char *slashp
, *cp
, *res
;
6782 if (filename_is_absolute (file
))
6783 res
= savestr (file
);
6785 /* We don't support non-absolute file names with a drive
6786 letter, like `d:NAME' (it's too much hassle). */
6787 else if (file
[1] == ':')
6788 fatal ("%s: relative file names with drive letters not supported", file
);
6791 res
= concat (dir
, file
, "");
6793 /* Delete the "/dirname/.." and "/." substrings. */
6794 slashp
= etags_strchr (res
, '/');
6795 while (slashp
!= NULL
&& slashp
[0] != '\0')
6797 if (slashp
[1] == '.')
6799 if (slashp
[2] == '.'
6800 && (slashp
[3] == '/' || slashp
[3] == '\0'))
6805 while (cp
>= res
&& !filename_is_absolute (cp
));
6807 cp
= slashp
; /* the absolute name begins with "/.." */
6809 /* Under MSDOS and NT we get `d:/NAME' as absolute
6810 file name, so the luser could say `d:/../NAME'.
6811 We silently treat this as `d:/NAME'. */
6812 else if (cp
[0] != '/')
6815 strcpy (cp
, slashp
+ 3);
6819 else if (slashp
[2] == '/' || slashp
[2] == '\0')
6821 strcpy (slashp
, slashp
+ 2);
6826 slashp
= etags_strchr (slashp
+ 1, '/');
6829 if (res
[0] == '\0') /* just a safety net: should never happen */
6832 return savestr ("/");
6838 /* Return a newly allocated string containing the absolute
6839 file name of dir where FILE resides given DIR (which should
6840 end with a slash). */
6842 absolute_dirname (file
, dir
)
6848 canonicalize_filename (file
);
6849 slashp
= etags_strrchr (file
, '/');
6851 return savestr (dir
);
6854 res
= absolute_filename (file
, dir
);
6860 /* Whether the argument string is an absolute file name. The argument
6861 string must have been canonicalized with canonicalize_filename. */
6863 filename_is_absolute (fn
)
6866 return (fn
[0] == '/'
6868 || (ISALPHA(fn
[0]) && fn
[1] == ':' && fn
[2] == '/')
6873 /* Translate backslashes into slashes. Works in place. */
6875 canonicalize_filename (fn
)
6879 /* Canonicalize drive letter case. */
6880 if (fn
[0] != '\0' && fn
[1] == ':' && ISLOWER (fn
[0]))
6881 fn
[0] = upcase (fn
[0]);
6882 /* Convert backslashes to slashes. */
6883 for (; *fn
!= '\0'; fn
++)
6888 fn
= NULL
; /* shut up the compiler */
6893 /* Initialize a linebuffer for use */
6895 linebuffer_init (lbp
)
6898 lbp
->size
= (DEBUG
) ? 3 : 200;
6899 lbp
->buffer
= xnew (lbp
->size
, char);
6900 lbp
->buffer
[0] = '\0';
6904 /* Set the minimum size of a string contained in a linebuffer. */
6906 linebuffer_setlen (lbp
, toksize
)
6910 while (lbp
->size
<= toksize
)
6913 xrnew (lbp
->buffer
, lbp
->size
, char);
6918 /* Like malloc but get fatal error if memory is exhausted. */
6923 PTR result
= (PTR
) malloc (size
);
6925 fatal ("virtual memory exhausted", (char *)NULL
);
6930 xrealloc (ptr
, size
)
6934 PTR result
= (PTR
) realloc (ptr
, size
);
6936 fatal ("virtual memory exhausted", (char *)NULL
);
6942 * indent-tabs-mode: t
6945 * c-font-lock-extra-types: ("FILE" "bool" "language" "linebuffer" "fdesc" "node" "regexp")
6946 * c-file-style: "gnu"
6950 /* arch-tag: 8a9b748d-390c-4922-99db-2eeefa921051
6951 (do not change this comment) */
6953 /* etags.c ends here */