1 /* Tags file maker to go with GNU Emacs -*- coding: latin-1 -*-
2 Copyright (C) 1984, 87, 88, 89, 93, 94, 95, 98, 99, 2000, 2001
3 Free Software Foundation, Inc. and Ken Arnold
5 This file is not considered part of GNU Emacs.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software Foundation,
19 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 * Ctags originally by Ken Arnold.
24 * Fortran added by Jim Kleckner.
25 * Ed Pelegri-Llopart added C typedefs.
26 * Gnu Emacs TAGS format and modifications by RMS?
27 * 1989 Sam Kendall added C++.
28 * 1993 Francesco Potortì reorganised C and C++ based on work by Joe Wells.
29 * 1994 Regexp tags by Tom Tromey.
30 * 2001 Nested classes by Francesco Potortì based on work by Mykola Dzyuba.
32 * Francesco Potortì <pot@gnu.org> has maintained it since 1993.
35 char pot_etags_version[] = "@(#) pot revision number is 14.15";
45 # define NDEBUG /* disable assert */
48 #if defined(__STDC__) && (__STDC__ || defined(__SUNPRO_C))
49 # define P_(proto) proto
56 /* On some systems, Emacs defines static as nothing for the sake
57 of unexec. We don't want that here since we don't use unexec. */
59 # define ETAGS_REGEXPS /* use the regexp features */
60 # define LONG_OPTIONS /* accept long options */
61 #endif /* HAVE_CONFIG_H */
64 # define _GNU_SOURCE 1 /* enables some compiler checks on GNU */
67 /* WIN32_NATIVE is for Xemacs.
68 MSDOS, WINDOWSNT, DOS_NT are for Emacs. */
73 #endif /* WIN32_NATIVE */
79 # include <sys/param.h>
81 # ifndef HAVE_CONFIG_H
83 # include <sys/config.h>
95 # define MAXPATHLEN _MAX_PATH
101 # endif /* undef HAVE_GETCWD */
102 #else /* !WINDOWSNT */
107 extern char *getenv ();
109 #endif /* !WINDOWSNT */
114 # if defined (HAVE_GETCWD) && !defined (WINDOWSNT)
115 extern char *getcwd (char *buf, size_t size);
117 #endif /* HAVE_UNISTD_H */
125 #include <sys/types.h>
126 #include <sys/stat.h>
130 # undef assert /* some systems have a buggy assert.h */
131 # define assert(x) ((void) 0)
134 #if !defined (S_ISREG) && defined (S_IFREG)
135 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
141 # define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr)
143 extern int optind, opterr;
144 #endif /* LONG_OPTIONS */
148 #endif /* ETAGS_REGEXPS */
150 /* Define CTAGS to make the program "ctags" compatible with the usual one.
151 Leave it undefined to make the program "etags", which makes emacs-style
152 tag tables and tags typedefs, #defines and struct/union/enum by default. */
160 /* Exit codes for success and failure. */
169 #define streq(s,t) (assert((s)!=NULL || (t)!=NULL), !strcmp (s, t))
170 #define strneq(s,t,n) (assert((s)!=NULL || (t)!=NULL), !strncmp (s, t, n))
172 #define CHARS 256 /* 2^sizeof(char) */
173 #define CHAR(x) ((unsigned int)(x) & (CHARS - 1))
174 #define iswhite(c) (_wht[CHAR(c)]) /* c is white */
175 #define notinname(c) (_nin[CHAR(c)]) /* c is not in a name */
176 #define begtoken(c) (_btk[CHAR(c)]) /* c can start token */
177 #define intoken(c) (_itk[CHAR(c)]) /* c can be in token */
178 #define endtoken(c) (_etk[CHAR(c)]) /* c ends tokens */
180 #define ISALNUM(c) isalnum (CHAR(c))
181 #define ISALPHA(c) isalpha (CHAR(c))
182 #define ISDIGIT(c) isdigit (CHAR(c))
183 #define ISLOWER(c) islower (CHAR(c))
185 #define lowcase(c) tolower (CHAR(c))
186 #define upcase(c) toupper (CHAR(c))
190 * xnew, xrnew -- allocate, reallocate storage
192 * SYNOPSIS: Type *xnew (int n, Type);
193 * void xrnew (OldPointer, int n, Type);
196 # include "chkmalloc.h"
197 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
198 (n) * sizeof (Type)))
199 # define xrnew(op,n,Type) ((op) = (Type *) trace_realloc (__FILE__, __LINE__, \
200 (char *) (op), (n) * sizeof (Type)))
202 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
203 # define xrnew(op,n,Type) ((op) = (Type *) xrealloc ( \
204 (char *) (op), (n) * sizeof (Type)))
209 typedef void Lang_function P_((FILE *));
214 char *command; /* Takes one arg and decompresses to stdout */
220 Lang_function *function;
226 typedef struct node_st
227 { /* sorting structure */
228 char *name; /* function or type name */
229 char *file; /* file name */
230 bool is_func; /* use pattern or line no */
231 bool been_warned; /* set if noticed dup */
232 int lno; /* line number tag is on */
233 long cno; /* character number line starts on */
234 char *pat; /* search pattern */
235 struct node_st *left, *right; /* left and right sons */
239 * A `linebuffer' is a structure which holds a line of text.
240 * `readline_internal' reads a line from a stream into a linebuffer
241 * and works regardless of the length of the line.
242 * SIZE is the size of BUFFER, LEN is the length of the string in
243 * BUFFER after readline reads it.
252 /* Many compilers barf on this:
253 Lang_function Ada_funcs;
254 so let's write it this way */
255 static void Ada_funcs P_((FILE *));
256 static void Asm_labels P_((FILE *));
257 static void C_entries P_((int c_ext, FILE *));
258 static void default_C_entries P_((FILE *));
259 static void plain_C_entries P_((FILE *));
260 static void Cjava_entries P_((FILE *));
261 static void Cobol_paragraphs P_((FILE *));
262 static void Cplusplus_entries P_((FILE *));
263 static void Cstar_entries P_((FILE *));
264 static void Erlang_functions P_((FILE *));
265 static void Fortran_functions P_((FILE *));
266 static void Yacc_entries P_((FILE *));
267 static void Lisp_functions P_((FILE *));
268 static void Makefile_targets P_((FILE *));
269 static void Pascal_functions P_((FILE *));
270 static void Perl_functions P_((FILE *));
271 static void Postscript_functions P_((FILE *));
272 static void Prolog_functions P_((FILE *));
273 static void Python_functions P_((FILE *));
274 static void Scheme_functions P_((FILE *));
275 static void TeX_commands P_((FILE *));
276 static void Texinfo_nodes P_((FILE *));
277 static void just_read_file P_((FILE *));
279 static void print_language_names P_((void));
280 static void print_version P_((void));
281 static void print_help P_((void));
282 int main P_((int, char **));
283 static int number_len P_((long));
285 static compressor *get_compressor_from_suffix P_((char *, char **));
286 static language *get_language_from_langname P_((char *));
287 static language *get_language_from_interpreter P_((char *));
288 static language *get_language_from_filename P_((char *));
289 static int total_size_of_entries P_((node *));
290 static long readline P_((linebuffer *, FILE *));
291 static long readline_internal P_((linebuffer *, FILE *));
292 static void get_tag P_((char *));
295 static void analyse_regex P_((char *, bool));
296 static void add_regex P_((char *, bool, language *));
297 static void free_patterns P_((void));
298 #endif /* ETAGS_REGEXPS */
299 static void error P_((const char *, const char *));
300 static void suggest_asking_for_help P_((void));
301 void fatal P_((char *, char *));
302 static void pfatal P_((char *));
303 static void add_node P_((node *, node **));
305 static void init P_((void));
306 static void initbuffer P_((linebuffer *));
307 static void find_entries P_((char *, FILE *));
308 static void free_tree P_((node *));
309 static void pfnote P_((char *, bool, char *, int, int, long));
310 static void new_pfnote P_((char *, int, bool, char *, int, int, long));
311 static void process_file P_((char *));
312 static void put_entries P_((node *));
313 static void takeprec P_((void));
315 static char *concat P_((char *, char *, char *));
316 static char *skip_spaces P_((char *));
317 static char *skip_non_spaces P_((char *));
318 static char *savenstr P_((char *, int));
319 static char *savestr P_((char *));
320 static char *etags_strchr P_((const char *, int));
321 static char *etags_strrchr P_((const char *, int));
322 static char *etags_getcwd P_((void));
323 static char *relative_filename P_((char *, char *));
324 static char *absolute_filename P_((char *, char *));
325 static char *absolute_dirname P_((char *, char *));
326 static bool filename_is_absolute P_((char *f));
327 static void canonicalize_filename P_((char *));
328 static void linebuffer_setlen P_((linebuffer *, int));
329 long *xmalloc P_((unsigned int));
330 long *xrealloc P_((char *, unsigned int));
333 char searchar = '/'; /* use /.../ searches */
335 char *tagfile; /* output file */
336 char *progname; /* name this program was invoked with */
337 char *cwd; /* current working directory */
338 char *tagfiledir; /* directory of tagfile */
339 FILE *tagf; /* ioptr for tags file */
341 char *curfile; /* current input file name */
342 language *curlang; /* current language */
344 int lineno; /* line number of current line */
345 long charno; /* current character number */
346 long linecharno; /* charno of start of current line */
347 char *dbp; /* pointer to start of current tag */
349 node *head; /* the head of the binary tree of tags */
351 linebuffer lb; /* the current line */
353 /* boolean "functions" (see init) */
354 bool _wht[CHARS], _nin[CHARS], _itk[CHARS], _btk[CHARS], _etk[CHARS];
357 *white = " \f\t\n\r\v",
359 *nonam = " \f\t\n\r(=,[;",
360 /* token ending chars */
361 *endtk = " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?",
362 /* token starting chars */
363 *begtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
364 /* valid in-token chars */
365 *midtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
367 bool append_to_tagfile; /* -a: append to tags */
368 /* The following four default to TRUE for etags, but to FALSE for ctags. */
369 bool typedefs; /* -t: create tags for C and Ada typedefs */
370 bool typedefs_or_cplusplus; /* -T: create tags for C typedefs, level */
371 /* 0 struct/enum/union decls, and C++ */
372 /* member functions. */
373 bool constantypedefs; /* -d: create tags for C #define, enum */
374 /* constants and variables. */
375 /* -D: opposite of -d. Default under ctags. */
376 bool declarations; /* --declarations: tag them and extern in C&Co*/
377 bool globals; /* create tags for global variables */
378 bool members; /* create tags for C member variables */
379 bool update; /* -u: update tags */
380 bool vgrind_style; /* -v: create vgrind style index output */
381 bool no_warnings; /* -w: suppress warnings */
382 bool cxref_style; /* -x: create cxref style output */
383 bool cplusplus; /* .[hc] means C++, not C */
384 bool noindentypedefs; /* -I: ignore indentation in C */
385 bool packages_only; /* --packages-only: in Ada, only tag packages*/
388 struct option longopts[] =
390 { "packages-only", no_argument, &packages_only, TRUE },
391 { "append", no_argument, NULL, 'a' },
392 { "backward-search", no_argument, NULL, 'B' },
393 { "c++", no_argument, NULL, 'C' },
394 { "cxref", no_argument, NULL, 'x' },
395 { "defines", no_argument, NULL, 'd' },
396 { "declarations", no_argument, &declarations, TRUE },
397 { "no-defines", no_argument, NULL, 'D' },
398 { "globals", no_argument, &globals, TRUE },
399 { "no-globals", no_argument, &globals, FALSE },
400 { "help", no_argument, NULL, 'h' },
401 { "help", no_argument, NULL, 'H' },
402 { "ignore-indentation", no_argument, NULL, 'I' },
403 { "include", required_argument, NULL, 'i' },
404 { "language", required_argument, NULL, 'l' },
405 { "members", no_argument, &members, TRUE },
406 { "no-members", no_argument, &members, FALSE },
407 { "no-warn", no_argument, NULL, 'w' },
408 { "output", required_argument, NULL, 'o' },
410 { "regex", required_argument, NULL, 'r' },
411 { "no-regex", no_argument, NULL, 'R' },
412 { "ignore-case-regex", required_argument, NULL, 'c' },
413 #endif /* ETAGS_REGEXPS */
414 { "typedefs", no_argument, NULL, 't' },
415 { "typedefs-and-c++", no_argument, NULL, 'T' },
416 { "update", no_argument, NULL, 'u' },
417 { "version", no_argument, NULL, 'V' },
418 { "vgrind", no_argument, NULL, 'v' },
421 #endif /* LONG_OPTIONS */
424 /* Structure defining a regular expression. Elements are
425 the compiled pattern, and the name string. */
426 typedef struct pattern
428 struct pattern *p_next;
431 struct re_pattern_buffer *pattern;
432 struct re_registers regs;
437 /* List of all regexps. */
438 pattern *p_head = NULL;
440 /* How many characters in the character set. (From regex.c.) */
441 #define CHAR_SET_SIZE 256
442 /* Translation table for case-insensitive matching. */
443 char lc_trans[CHAR_SET_SIZE];
444 #endif /* ETAGS_REGEXPS */
446 compressor compressors[] =
448 { "z", "gzip -d -c"},
449 { "Z", "gzip -d -c"},
450 { "gz", "gzip -d -c"},
451 { "GZ", "gzip -d -c"},
452 { "bz2", "bzip2 -d -c" },
460 /* Non-NULL if language fixed. */
461 language *forced_lang = NULL;
464 char *Ada_suffixes [] =
465 { "ads", "adb", "ada", NULL };
468 char *Asm_suffixes [] = { "a", /* Unix assembler */
469 "asm", /* Microcontroller assembly */
470 "def", /* BSO/Tasking definition includes */
471 "inc", /* Microcontroller include files */
472 "ins", /* Microcontroller include files */
473 "s", "sa", /* Unix assembler */
474 "S", /* cpp-processed Unix assembler */
475 "src", /* BSO/Tasking C compiler output */
479 /* Note that .c and .h can be considered C++, if the --c++ flag was
480 given, or if the `class' keyowrd is met inside the file.
481 That is why default_C_entries is called for these. */
482 char *default_C_suffixes [] =
485 char *Cplusplus_suffixes [] =
486 { "C", "c++", "cc", "cpp", "cxx", "H", "h++", "hh", "hpp", "hxx",
487 "M", /* Objective C++ */
488 "pdb", /* Postscript with C syntax */
491 char *Cjava_suffixes [] =
494 char *Cobol_suffixes [] =
495 { "COB", "cob", NULL };
497 char *Cstar_suffixes [] =
498 { "cs", "hs", NULL };
500 char *Erlang_suffixes [] =
501 { "erl", "hrl", NULL };
503 char *Fortran_suffixes [] =
504 { "F", "f", "f90", "for", NULL };
506 char *Lisp_suffixes [] =
507 { "cl", "clisp", "el", "l", "lisp", "LSP", "lsp", "ml", NULL };
509 char *Makefile_filenames [] =
510 { "Makefile", "makefile", "GNUMakefile", "Makefile.in", "Makefile.am", NULL};
512 char *Pascal_suffixes [] =
513 { "p", "pas", NULL };
515 char *Perl_suffixes [] =
516 { "pl", "pm", NULL };
517 char *Perl_interpreters [] =
518 { "perl", "@PERL@", NULL };
520 char *plain_C_suffixes [] =
521 { "lm", /* Objective lex file */
522 "m", /* Objective C file */
523 "pc", /* Pro*C file */
526 char *Postscript_suffixes [] =
527 { "ps", "psw", NULL }; /* .psw is for PSWrap */
529 char *Prolog_suffixes [] =
532 char *Python_suffixes [] =
535 /* Can't do the `SCM' or `scm' prefix with a version number. */
536 char *Scheme_suffixes [] =
537 { "oak", "sch", "scheme", "SCM", "scm", "SM", "sm", "ss", "t", NULL };
539 char *TeX_suffixes [] =
540 { "bib", "clo", "cls", "ltx", "sty", "TeX", "tex", NULL };
542 char *Texinfo_suffixes [] =
543 { "texi", "texinfo", "txi", NULL };
545 char *Yacc_suffixes [] =
546 { "y", "y++", "ym", "yxx", "yy", NULL }; /* .ym is Objective yacc file */
549 * Table of languages.
551 * It is ok for a given function to be listed under more than one
552 * name. I just didn't.
555 language lang_names [] =
557 { "ada", Ada_funcs, NULL, Ada_suffixes, NULL },
558 { "asm", Asm_labels, NULL, Asm_suffixes, NULL },
559 { "c", default_C_entries, NULL, default_C_suffixes, NULL },
560 { "c++", Cplusplus_entries, NULL, Cplusplus_suffixes, NULL },
561 { "c*", Cstar_entries, NULL, Cstar_suffixes, NULL },
562 { "cobol", Cobol_paragraphs, NULL, Cobol_suffixes, NULL },
563 { "erlang", Erlang_functions, NULL, Erlang_suffixes, NULL },
564 { "fortran", Fortran_functions, NULL, Fortran_suffixes, NULL },
565 { "java", Cjava_entries, NULL, Cjava_suffixes, NULL },
566 { "lisp", Lisp_functions, NULL, Lisp_suffixes, NULL },
567 { "makefile", Makefile_targets, Makefile_filenames, NULL, NULL },
568 { "pascal", Pascal_functions, NULL, Pascal_suffixes, NULL },
569 { "perl", Perl_functions, NULL, Perl_suffixes, Perl_interpreters },
570 { "postscript", Postscript_functions, NULL, Postscript_suffixes, NULL },
571 { "proc", plain_C_entries, NULL, plain_C_suffixes, NULL },
572 { "prolog", Prolog_functions, NULL, Prolog_suffixes, NULL },
573 { "python", Python_functions, NULL, Python_suffixes, NULL },
574 { "scheme", Scheme_functions, NULL, Scheme_suffixes, NULL },
575 { "tex", TeX_commands, NULL, TeX_suffixes, NULL },
576 { "texinfo", Texinfo_nodes, NULL, Texinfo_suffixes, NULL },
577 { "yacc", Yacc_entries, NULL, Yacc_suffixes, NULL },
578 { "auto", NULL }, /* default guessing scheme */
579 { "none", just_read_file }, /* regexp matching only */
580 { NULL, NULL } /* end of list */
585 print_language_names ()
590 puts ("\nThese are the currently supported languages, along with the\n\
591 default file names and dot suffixes:");
592 for (lang = lang_names; lang->name != NULL; lang++)
594 printf (" %-*s", 10, lang->name);
595 if (lang->filenames != NULL)
596 for (name = lang->filenames; *name != NULL; name++)
597 printf (" %s", *name);
598 if (lang->suffixes != NULL)
599 for (ext = lang->suffixes; *ext != NULL; ext++)
600 printf (" .%s", *ext);
603 puts ("Where `auto' means use default language for files based on file\n\
604 name suffix, and `none' means only do regexp processing on files.\n\
605 If no language is specified and no matching suffix is found,\n\
606 the first line of the file is read for a sharp-bang (#!) sequence\n\
607 followed by the name of an interpreter. If no such sequence is found,\n\
608 Fortran is tried first; if no tags are found, C is tried next.\n\
609 When parsing any C file, a \"class\" keyword switches to C++.\n\
610 Compressed files are supported using gzip and bzip2.");
614 # define EMACS_NAME "GNU Emacs"
617 # define VERSION "21"
622 printf ("%s (%s %s)\n", (CTAGS) ? "ctags" : "etags", EMACS_NAME, VERSION);
623 puts ("Copyright (C) 1999 Free Software Foundation, Inc. and Ken Arnold");
624 puts ("This program is distributed under the same terms as Emacs");
632 printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\
634 These are the options accepted by %s.\n", progname, progname);
636 puts ("You may use unambiguous abbreviations for the long option names.");
638 puts ("Long option names do not work with this executable, as it is not\n\
639 linked with GNU getopt.");
640 #endif /* LONG_OPTIONS */
641 puts ("A - as file name means read names from stdin (one per line).");
643 printf (" Absolute names are stored in the output file as they are.\n\
644 Relative ones are stored relative to the output file's directory.");
647 puts ("-a, --append\n\
648 Append tag entries to existing tags file.");
650 puts ("--packages-only\n\
651 For Ada files, only generate tags for packages .");
654 puts ("-B, --backward-search\n\
655 Write the search commands for the tag entries using '?', the\n\
656 backward-search command instead of '/', the forward-search command.");
658 /* This option is mostly obsolete, because etags can now automatically
659 detect C++. Retained for backward compatibility and for debugging and
660 experimentation. In principle, we could want to tag as C++ even
661 before any "class" keyword.
663 Treat files whose name suffix defaults to C language as C++ files.");
666 puts ("--declarations\n\
667 In C and derived languages, create tags for function declarations,");
669 puts ("\tand create tags for extern variables if --globals is used.");
672 ("\tand create tags for extern variables unless --no-globals is used.");
675 puts ("-d, --defines\n\
676 Create tag entries for C #define constants and enum constants, too.");
678 puts ("-D, --no-defines\n\
679 Don't create tag entries for C #define constants and enum constants.\n\
680 This makes the tags file smaller.");
684 puts ("-i FILE, --include=FILE\n\
685 Include a note in tag file indicating that, when searching for\n\
686 a tag, one should also consult the tags file FILE after\n\
687 checking the current file.");
688 puts ("-l LANG, --language=LANG\n\
689 Force the following files to be considered as written in the\n\
690 named language up to the next --language=LANG option.");
695 Create tag entries for global variables in some languages.");
697 puts ("--no-globals\n\
698 Do not create tag entries for global variables in some\n\
699 languages. This makes the tags file smaller.");
701 Create tag entries for member variables in C and derived languages.");
704 puts ("-r /REGEXP/, --regex=/REGEXP/ or --regex=@regexfile\n\
705 Make a tag for each line matching pattern REGEXP in the following\n\
706 files. {LANGUAGE}/REGEXP/ uses REGEXP for LANGUAGE files only.\n\
707 regexfile is a file containing one REGEXP per line.\n\
708 REGEXP is anchored (as if preceded by ^).\n\
709 The form /REGEXP/NAME/ creates a named tag.\n\
710 For example Tcl named tags can be created with:\n\
711 --regex=/proc[ \\t]+\\([^ \\t]+\\)/\\1/.");
712 puts ("-c /REGEXP/, --ignore-case-regex=/REGEXP/ or --ignore-case-regex=@regexfile\n\
713 Like -r, --regex but ignore case when matching expressions.");
714 puts ("-R, --no-regex\n\
715 Don't create tags from regexps for the following files.");
716 #endif /* ETAGS_REGEXPS */
717 puts ("-o FILE, --output=FILE\n\
718 Write the tags to FILE.");
719 puts ("-I, --ignore-indentation\n\
720 Don't rely on indentation quite as much as normal. Currently,\n\
721 this means not to assume that a closing brace in the first\n\
722 column is the final brace of a function or structure\n\
723 definition in C and C++.");
727 puts ("-t, --typedefs\n\
728 Generate tag entries for C and Ada typedefs.");
729 puts ("-T, --typedefs-and-c++\n\
730 Generate tag entries for C typedefs, C struct/enum/union tags,\n\
731 and C++ member functions.");
732 puts ("-u, --update\n\
733 Update the tag entries for the given files, leaving tag\n\
734 entries for other files in place. Currently, this is\n\
735 implemented by deleting the existing entries for the given\n\
736 files and then rewriting the new entries at the end of the\n\
737 tags file. It is often faster to simply rebuild the entire\n\
738 tag file than to use this.");
739 puts ("-v, --vgrind\n\
740 Generates an index of items intended for human consumption,\n\
741 similar to the output of vgrind. The index is sorted, and\n\
742 gives the page number of each item.");
743 puts ("-w, --no-warn\n\
744 Suppress warning messages about entries defined in multiple\n\
746 puts ("-x, --cxref\n\
747 Like --vgrind, but in the style of cxref, rather than vgrind.\n\
748 The output uses line numbers instead of page numbers, but\n\
749 beyond that the differences are cosmetic; try both to see\n\
753 puts ("-V, --version\n\
754 Print the version of the program.\n\
756 Print this help message.");
758 print_language_names ();
761 puts ("Report bugs to bug-gnu-emacs@gnu.org");
775 /* This structure helps us allow mixing of --lang and file names. */
778 enum argument_type arg_type;
780 language *lang; /* language of the regexp */
783 #ifdef VMS /* VMS specific functions */
787 /* This is a BUG! ANY arbitrary limit is a BUG!
788 Won't someone please fix this? */
789 #define MAX_FILE_SPEC_LEN 255
792 char body[MAX_FILE_SPEC_LEN + 1];
796 v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
797 returning in each successive call the next file name matching the input
798 spec. The function expects that each in_spec passed
799 to it will be processed to completion; in particular, up to and
800 including the call following that in which the last matching name
801 is returned, the function ignores the value of in_spec, and will
802 only start processing a new spec with the following call.
803 If an error occurs, on return out_spec contains the value
804 of in_spec when the error occurred.
806 With each successive file name returned in out_spec, the
807 function's return value is one. When there are no more matching
808 names the function returns zero. If on the first call no file
809 matches in_spec, or there is any other error, -1 is returned.
814 #define OUTSIZE MAX_FILE_SPEC_LEN
820 static long context = 0;
821 static struct dsc$descriptor_s o;
822 static struct dsc$descriptor_s i;
823 static bool pass1 = TRUE;
830 o.dsc$a_pointer = (char *) out;
831 o.dsc$w_length = (short)OUTSIZE;
832 i.dsc$a_pointer = in;
833 i.dsc$w_length = (short)strlen(in);
834 i.dsc$b_dtype = DSC$K_DTYPE_T;
835 i.dsc$b_class = DSC$K_CLASS_S;
836 o.dsc$b_dtype = DSC$K_DTYPE_VT;
837 o.dsc$b_class = DSC$K_CLASS_VS;
839 if ((status = lib$find_file(&i, &o, &context, 0, 0)) == RMS$_NORMAL)
841 out->body[out->curlen] = EOS;
844 else if (status == RMS$_NMF)
848 strcpy(out->body, in);
851 lib$find_file_end(&context);
857 v1.01 nmm 19-Aug-85 gfnames - return in successive calls the
858 name of each file specified by the provided arg expanding wildcards.
861 gfnames (arg, p_error)
865 static vspec filename = {MAX_FILE_SPEC_LEN, "\0"};
867 switch (fn_exp (&filename, arg))
871 return filename.body;
877 return filename.body;
881 #ifndef OLD /* Newer versions of VMS do provide `system'. */
885 error ("%s", "system() function not implemented under VMS");
889 #define VERSION_DELIM ';'
890 char *massage_name (s)
896 if (*s == VERSION_DELIM)
914 unsigned int nincluded_files;
915 char **included_files;
918 int current_arg, file_count;
919 linebuffer filename_lb;
925 _fmode = O_BINARY; /* all of files are treated as binary files */
930 included_files = xnew (argc, char *);
934 /* Allocate enough no matter what happens. Overkill, but each one
936 argbuffer = xnew (argc, argument);
939 /* Set syntax for regular expression routines. */
940 re_set_syntax (RE_SYNTAX_EMACS | RE_INTERVALS);
941 /* Translation table for case-insensitive search. */
942 for (i = 0; i < CHAR_SET_SIZE; i++)
943 lc_trans[i] = lowcase (i);
944 #endif /* ETAGS_REGEXPS */
947 * If etags, always find typedefs and structure tags. Why not?
948 * Also default to find macro constants, enum constants and
953 typedefs = typedefs_or_cplusplus = constantypedefs = TRUE;
955 declarations = FALSE;
965 optstring = "-aCdDf:Il:o:r:c:RStTi:BuvxwVhH";
967 optstring = "-aCdDf:Il:o:StTi:BuvxwVhH";
968 #endif /* ETAGS_REGEXPS */
971 optstring = optstring + 1;
972 #endif /* LONG_OPTIONS */
974 opt = getopt_long (argc, argv, optstring, longopts, 0);
981 /* If getopt returns 0, then it has already processed a
982 long-named option. We should do nothing. */
986 /* This means that a file name has been seen. Record it. */
987 argbuffer[current_arg].arg_type = at_filename;
988 argbuffer[current_arg].what = optarg;
993 /* Common options. */
994 case 'a': append_to_tagfile = TRUE; break;
995 case 'C': cplusplus = TRUE; break;
996 case 'd': constantypedefs = TRUE; break;
997 case 'D': constantypedefs = FALSE; break;
998 case 'f': /* for compatibility with old makefiles */
1002 error ("-o option may only be given once.", (char *)NULL);
1003 suggest_asking_for_help ();
1008 case 'S': /* for backward compatibility */
1009 noindentypedefs = TRUE;
1013 language *lang = get_language_from_langname (optarg);
1016 argbuffer[current_arg].lang = lang;
1017 argbuffer[current_arg].arg_type = at_language;
1022 #ifdef ETAGS_REGEXPS
1024 argbuffer[current_arg].arg_type = at_regexp;
1025 argbuffer[current_arg].what = optarg;
1029 argbuffer[current_arg].arg_type = at_regexp;
1030 argbuffer[current_arg].what = NULL;
1034 argbuffer[current_arg].arg_type = at_icregexp;
1035 argbuffer[current_arg].what = optarg;
1038 #endif /* ETAGS_REGEXPS */
1050 typedefs = typedefs_or_cplusplus = TRUE;
1055 included_files[nincluded_files++] = optarg;
1058 /* Ctags options. */
1059 case 'B': searchar = '?'; break;
1060 case 'u': update = TRUE; break;
1061 case 'v': vgrind_style = TRUE; /*FALLTHRU*/
1062 case 'x': cxref_style = TRUE; break;
1063 case 'w': no_warnings = TRUE; break;
1066 suggest_asking_for_help ();
1070 for (; optind < argc; ++optind)
1072 argbuffer[current_arg].arg_type = at_filename;
1073 argbuffer[current_arg].what = argv[optind];
1078 if (nincluded_files == 0 && file_count == 0)
1080 error ("no input files specified.", (char *)NULL);
1081 suggest_asking_for_help ();
1084 if (tagfile == NULL)
1085 tagfile = CTAGS ? "tags" : "TAGS";
1086 cwd = etags_getcwd (); /* the current working directory */
1087 if (cwd[strlen (cwd) - 1] != '/')
1090 cwd = concat (oldcwd, "/", "");
1093 if (streq (tagfile, "-"))
1096 tagfiledir = absolute_dirname (tagfile, cwd);
1098 init (); /* set up boolean "functions" */
1101 initbuffer (&filename_lb);
1105 if (streq (tagfile, "-"))
1109 /* Switch redirected `stdout' to binary mode (setting `_fmode'
1110 doesn't take effect until after `stdout' is already open). */
1111 if (!isatty (fileno (stdout)))
1112 setmode (fileno (stdout), O_BINARY);
1116 tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
1122 * Loop through files finding functions.
1124 for (i = 0; i < current_arg; ++i)
1126 switch (argbuffer[i].arg_type)
1129 forced_lang = argbuffer[i].lang;
1131 #ifdef ETAGS_REGEXPS
1133 analyse_regex (argbuffer[i].what, FALSE);
1136 analyse_regex (argbuffer[i].what, TRUE);
1141 while ((this_file = gfnames (argbuffer[i].what, &got_err)) != NULL)
1145 error ("can't find file %s\n", this_file);
1150 this_file = massage_name (this_file);
1153 this_file = argbuffer[i].what;
1155 /* Input file named "-" means read file names from stdin
1156 (one per line) and use them. */
1157 if (streq (this_file, "-"))
1158 while (readline_internal (&filename_lb, stdin) > 0)
1159 process_file (filename_lb.buffer);
1161 process_file (this_file);
1169 #ifdef ETAGS_REGEXPS
1171 #endif /* ETAGS_REGEXPS */
1175 while (nincluded_files-- > 0)
1176 fprintf (tagf, "\f\n%s,include\n", *included_files++);
1182 /* If CTAGS, we are here. process_file did not write the tags yet,
1183 because we want them ordered. Let's do it now. */
1195 for (i = 0; i < current_arg; ++i)
1197 if (argbuffer[i].arg_type != at_filename)
1200 "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
1201 tagfile, argbuffer[i].what, tagfile);
1202 if (system (cmd) != GOOD)
1203 fatal ("failed to execute shell command", (char *)NULL);
1205 append_to_tagfile = TRUE;
1208 tagf = fopen (tagfile, append_to_tagfile ? "a" : "w");
1219 sprintf (cmd, "sort %s -o %s", tagfile, tagfile);
1220 exit (system (cmd));
1228 * Return a compressor given the file name. If EXTPTR is non-zero,
1229 * return a pointer into FILE where the compressor-specific
1230 * extension begins. If no compressor is found, NULL is returned
1231 * and EXTPTR is not significant.
1232 * Idea by Vladimir Alexiev <vladimir@cs.ualberta.ca> (1998)
1235 get_compressor_from_suffix (file, extptr)
1240 char *slash, *suffix;
1242 /* This relies on FN to be after canonicalize_filename,
1243 so we don't need to consider backslashes on DOS_NT. */
1244 slash = etags_strrchr (file, '/');
1245 suffix = etags_strrchr (file, '.');
1246 if (suffix == NULL || suffix < slash)
1251 /* Let those poor souls who live with DOS 8+3 file name limits get
1252 some solace by treating foo.cgz as if it were foo.c.gz, etc.
1253 Only the first do loop is run if not MSDOS */
1256 for (compr = compressors; compr->suffix != NULL; compr++)
1257 if (streq (compr->suffix, suffix))
1260 break; /* do it only once: not really a loop */
1263 } while (*suffix != '\0');
1270 * Return a language given the name.
1273 get_language_from_langname (name)
1279 error ("empty language name", (char *)NULL);
1282 for (lang = lang_names; lang->name != NULL; lang++)
1283 if (streq (name, lang->name))
1285 error ("unknown language \"%s\"", name);
1293 * Return a language given the interpreter name.
1296 get_language_from_interpreter (interpreter)
1302 if (interpreter == NULL)
1304 for (lang = lang_names; lang->name != NULL; lang++)
1305 if (lang->interpreters != NULL)
1306 for (iname = lang->interpreters; *iname != NULL; iname++)
1307 if (streq (*iname, interpreter))
1316 * Return a language given the file name.
1319 get_language_from_filename (file)
1323 char **name, **ext, *suffix;
1325 /* Try whole file name first. */
1326 for (lang = lang_names; lang->name != NULL; lang++)
1327 if (lang->filenames != NULL)
1328 for (name = lang->filenames; *name != NULL; name++)
1329 if (streq (*name, file))
1332 /* If not found, try suffix after last dot. */
1333 suffix = etags_strrchr (file, '.');
1337 for (lang = lang_names; lang->name != NULL; lang++)
1338 if (lang->suffixes != NULL)
1339 for (ext = lang->suffixes; *ext != NULL; ext++)
1340 if (streq (*ext, suffix))
1348 * This routine is called on each file argument.
1354 struct stat stat_buf;
1357 char *compressed_name, *uncompressed_name;
1358 char *ext, *real_name;
1361 canonicalize_filename (file);
1362 if (streq (file, tagfile) && !streq (tagfile, "-"))
1364 error ("skipping inclusion of %s in self.", file);
1367 if ((compr = get_compressor_from_suffix (file, &ext)) == NULL)
1369 compressed_name = NULL;
1370 real_name = uncompressed_name = savestr (file);
1374 real_name = compressed_name = savestr (file);
1375 uncompressed_name = savenstr (file, ext - file);
1378 /* If the canonicalised uncompressed name has already be dealt with,
1379 skip it silently, else add it to the list. */
1381 typedef struct processed_file
1384 struct processed_file *next;
1386 static processed_file *pf_head = NULL;
1387 register processed_file *fnp;
1389 for (fnp = pf_head; fnp != NULL; fnp = fnp->next)
1390 if (streq (uncompressed_name, fnp->filename))
1393 pf_head = xnew (1, struct processed_file);
1394 pf_head->filename = savestr (uncompressed_name);
1395 pf_head->next = fnp;
1398 if (stat (real_name, &stat_buf) != 0)
1400 /* Reset real_name and try with a different name. */
1402 if (compressed_name != NULL) /* try with the given suffix */
1404 if (stat (uncompressed_name, &stat_buf) == 0)
1405 real_name = uncompressed_name;
1407 else /* try all possible suffixes */
1409 for (compr = compressors; compr->suffix != NULL; compr++)
1411 compressed_name = concat (file, ".", compr->suffix);
1412 if (stat (compressed_name, &stat_buf) != 0)
1416 char *suf = compressed_name + strlen (file);
1417 size_t suflen = strlen (compr->suffix) + 1;
1418 for ( ; suf[1]; suf++, suflen--)
1420 memmove (suf, suf + 1, suflen);
1421 if (stat (compressed_name, &stat_buf) == 0)
1423 real_name = compressed_name;
1427 if (real_name != NULL)
1430 free (compressed_name);
1431 compressed_name = NULL;
1435 real_name = compressed_name;
1440 if (real_name == NULL)
1445 } /* try with a different name */
1447 if (!S_ISREG (stat_buf.st_mode))
1449 error ("skipping %s: it is not a regular file.", real_name);
1452 if (real_name == compressed_name)
1454 char *cmd = concat (compr->command, " ", real_name);
1455 inf = (FILE *) popen (cmd, "r");
1459 inf = fopen (real_name, "r");
1466 find_entries (uncompressed_name, inf);
1468 if (real_name == compressed_name)
1477 if (filename_is_absolute (uncompressed_name))
1479 /* file is an absolute file name. Canonicalise it. */
1480 filename = absolute_filename (uncompressed_name, cwd);
1484 /* file is a file name relative to cwd. Make it relative
1485 to the directory of the tags file. */
1486 filename = relative_filename (uncompressed_name, tagfiledir);
1488 fprintf (tagf, "\f\n%s,%d\n", filename, total_size_of_entries (head));
1496 if (compressed_name) free(compressed_name);
1497 if (uncompressed_name) free(uncompressed_name);
1502 * This routine sets up the boolean pseudo-functions which work
1503 * by setting boolean flags dependent upon the corresponding character.
1504 * Every char which is NOT in that string is not a white char. Therefore,
1505 * all of the array "_wht" is set to FALSE, and then the elements
1506 * subscripted by the chars in "white" are set to TRUE. Thus "_wht"
1507 * of a char is TRUE if it is the string "white", else FALSE.
1515 for (i = 0; i < CHARS; i++)
1516 iswhite(i) = notinname(i) = begtoken(i) = intoken(i) = endtoken(i) = FALSE;
1517 for (sp = white; *sp != '\0'; sp++) iswhite (*sp) = TRUE;
1518 for (sp = nonam; *sp != '\0'; sp++) notinname (*sp) = TRUE;
1519 notinname('\0') = notinname('\n');
1520 for (sp = begtk; *sp != '\0'; sp++) begtoken (*sp) = TRUE;
1521 begtoken('\0') = begtoken('\n');
1522 for (sp = midtk; *sp != '\0'; sp++) intoken (*sp) = TRUE;
1523 intoken('\0') = intoken('\n');
1524 for (sp = endtk; *sp != '\0'; sp++) endtoken (*sp) = TRUE;
1525 endtoken('\0') = endtoken('\n');
1529 * This routine opens the specified file and calls the function
1530 * which finds the function and type definitions.
1532 node *last_node = NULL;
1535 find_entries (file, inf)
1541 node *old_last_node;
1543 /* Memory leakage here: the string pointed by curfile is
1544 never released, because curfile is copied into np->file
1545 for each node, to be used in CTAGS mode. The amount of
1546 memory leaked here is the sum of the lengths of the
1548 curfile = savestr (file);
1550 /* If user specified a language, use it. */
1552 if (lang != NULL && lang->function != NULL)
1555 lang->function (inf);
1559 /* Try to guess the language given the file name. */
1560 lang = get_language_from_filename (file);
1561 if (lang != NULL && lang->function != NULL)
1564 lang->function (inf);
1568 /* Look for sharp-bang as the first two characters. */
1569 if (readline_internal (&lb, inf) > 0
1571 && lb.buffer[0] == '#'
1572 && lb.buffer[1] == '!')
1576 /* Set lp to point at the first char after the last slash in the
1577 line or, if no slashes, at the first nonblank. Then set cp to
1578 the first successive blank and terminate the string. */
1579 lp = etags_strrchr (lb.buffer+2, '/');
1583 lp = skip_spaces (lb.buffer + 2);
1584 cp = skip_non_spaces (lp);
1587 if (strlen (lp) > 0)
1589 lang = get_language_from_interpreter (lp);
1590 if (lang != NULL && lang->function != NULL)
1593 lang->function (inf);
1598 /* We rewind here, even if inf may be a pipe. We fail if the
1599 length of the first line is longer than the pipe block size,
1600 which is unlikely. */
1604 old_last_node = last_node;
1605 curlang = get_language_from_langname ("fortran");
1606 Fortran_functions (inf);
1608 /* No Fortran entries found. Try C. */
1609 if (old_last_node == last_node)
1611 /* We do not tag if rewind fails.
1612 Only the file name will be recorded in the tags file. */
1614 curlang = get_language_from_langname (cplusplus ? "c++" : "c");
1615 default_C_entries (inf);
1623 pfnote (name, is_func, linestart, linelen, lno, cno)
1624 char *name; /* tag name, or NULL if unnamed */
1625 bool is_func; /* tag is a function */
1626 char *linestart; /* start of the line where tag is */
1627 int linelen; /* length of the line where tag is */
1628 int lno; /* line number */
1629 long cno; /* character number */
1633 if (CTAGS && name == NULL)
1636 np = xnew (1, node);
1638 /* If ctags mode, change name "main" to M<thisfilename>. */
1639 if (CTAGS && !cxref_style && streq (name, "main"))
1641 register char *fp = etags_strrchr (curfile, '/');
1642 np->name = concat ("M", fp == NULL ? curfile : fp + 1, "");
1643 fp = etags_strrchr (np->name, '.');
1644 if (fp != NULL && fp[1] != '\0' && fp[2] == '\0')
1649 np->been_warned = FALSE;
1651 np->is_func = is_func;
1653 /* Our char numbers are 0-base, because of C language tradition?
1654 ctags compatibility? old versions compatibility? I don't know.
1655 Anyway, since emacs's are 1-base we expect etags.el to take care
1656 of the difference. If we wanted to have 1-based numbers, we would
1657 uncomment the +1 below. */
1658 np->cno = cno /* + 1 */ ;
1659 np->left = np->right = NULL;
1660 if (CTAGS && !cxref_style)
1662 if (strlen (linestart) < 50)
1663 np->pat = concat (linestart, "$", "");
1665 np->pat = savenstr (linestart, 50);
1668 np->pat = savenstr (linestart, linelen);
1670 add_node (np, &head);
1674 * TAGS format specification
1675 * Idea by Sam Kendall <kendall@mv.mv.com> (1997)
1677 * pfnote should emit the optimized form [unnamed tag] only if:
1678 * 1. name does not contain any of the characters " \t\r\n(),;";
1679 * 2. linestart contains name as either a rightmost, or rightmost but
1680 * one character, substring;
1681 * 3. the character, if any, immediately before name in linestart must
1682 * be one of the characters " \t(),;";
1683 * 4. the character, if any, immediately after name in linestart must
1684 * also be one of the characters " \t(),;".
1686 * The real implementation uses the notinname() macro, which recognises
1687 * characters slightly different form " \t\r\n(),;". See the variable
1690 #define traditional_tag_style TRUE
1692 new_pfnote (name, namelen, is_func, linestart, linelen, lno, cno)
1693 char *name; /* tag name, or NULL if unnamed */
1694 int namelen; /* tag length */
1695 bool is_func; /* tag is a function */
1696 char *linestart; /* start of the line where tag is */
1697 int linelen; /* length of the line where tag is */
1698 int lno; /* line number */
1699 long cno; /* character number */
1707 for (cp = name; !notinname (*cp); cp++)
1709 if (*cp == '\0') /* rule #1 */
1711 cp = linestart + linelen - namelen;
1712 if (notinname (linestart[linelen-1]))
1713 cp -= 1; /* rule #4 */
1714 if (cp >= linestart /* rule #2 */
1716 || notinname (cp[-1])) /* rule #3 */
1717 && strneq (name, cp, namelen)) /* rule #2 */
1718 named = FALSE; /* use unnamed tag */
1723 name = savenstr (name, namelen);
1726 pfnote (name, is_func, linestart, linelen, lno, cno);
1731 * recurse on left children, iterate on right children.
1739 register node *node_right = np->right;
1740 free_tree (np->left);
1741 if (np->name != NULL)
1751 * Adds a node to the tree of nodes. In etags mode, we don't keep
1752 * it sorted; we just keep a linear list. In ctags mode, maintain
1753 * an ordered tree, with no attempt at balancing.
1755 * add_node is the only function allowed to add nodes, so it can
1759 add_node (np, cur_node_p)
1760 node *np, **cur_node_p;
1763 register node *cur_node = *cur_node_p;
1765 if (cur_node == NULL)
1775 if (last_node == NULL)
1776 fatal ("internal error in add_node", (char *)NULL);
1777 last_node->right = np;
1783 dif = strcmp (np->name, cur_node->name);
1786 * If this tag name matches an existing one, then
1787 * do not add the node, but maybe print a warning.
1791 if (streq (np->file, cur_node->file))
1795 fprintf (stderr, "Duplicate entry in file %s, line %d: %s\n",
1796 np->file, lineno, np->name);
1797 fprintf (stderr, "Second entry ignored\n");
1800 else if (!cur_node->been_warned && !no_warnings)
1804 "Duplicate entry in files %s and %s: %s (Warning only)\n",
1805 np->file, cur_node->file, np->name);
1806 cur_node->been_warned = TRUE;
1811 /* Actually add the node */
1812 add_node (np, dif < 0 ? &cur_node->left : &cur_node->right);
1826 /* Output subentries that precede this one */
1827 put_entries (np->left);
1829 /* Output this entry */
1833 if (np->name != NULL)
1834 fprintf (tagf, "%s\177%s\001%d,%ld\n",
1835 np->pat, np->name, np->lno, np->cno);
1837 fprintf (tagf, "%s\177%d,%ld\n",
1838 np->pat, np->lno, np->cno);
1842 if (np->name == NULL)
1843 error ("internal error: NULL name in ctags mode.", (char *)NULL);
1848 fprintf (stdout, "%s %s %d\n",
1849 np->name, np->file, (np->lno + 63) / 64);
1851 fprintf (stdout, "%-16s %3d %-16s %s\n",
1852 np->name, np->lno, np->file, np->pat);
1856 fprintf (tagf, "%s\t%s\t", np->name, np->file);
1860 putc (searchar, tagf);
1863 for (sp = np->pat; *sp; sp++)
1865 if (*sp == '\\' || *sp == searchar)
1869 putc (searchar, tagf);
1872 { /* a typedef; text pattern inadequate */
1873 fprintf (tagf, "%d", np->lno);
1879 /* Output subentries that follow this one */
1880 put_entries (np->right);
1883 /* Length of a number's decimal representation. */
1889 while ((num /= 10) > 0)
1895 * Return total number of characters that put_entries will output for
1896 * the nodes in the subtree of the specified node. Works only if
1897 * we are not ctags, but called only in that case. This count
1898 * is irrelevant with the new tags.el, but is still supplied for
1899 * backward compatibility.
1902 total_size_of_entries (np)
1910 for (total = 0; np != NULL; np = np->right)
1912 /* Count left subentries. */
1913 total += total_size_of_entries (np->left);
1915 /* Count this entry */
1916 total += strlen (np->pat) + 1;
1917 total += number_len ((long) np->lno) + 1 + number_len (np->cno) + 1;
1918 if (np->name != NULL)
1919 total += 1 + strlen (np->name); /* \001name */
1927 #define C_EXT 0x00fff /* C extensions */
1928 #define C_PLAIN 0x00000 /* C */
1929 #define C_PLPL 0x00001 /* C++ */
1930 #define C_STAR 0x00003 /* C* */
1931 #define C_JAVA 0x00005 /* JAVA */
1932 #define C_AUTO 0x01000 /* C, but switch to C++ if `class' is met */
1933 #define YACC 0x10000 /* yacc file */
1936 * The C symbol tables.
1941 st_C_objprot, st_C_objimpl, st_C_objend,
1947 st_C_struct, st_C_extern, st_C_enum, st_C_define, st_C_typedef, st_C_typespec
1950 static unsigned int hash P_((const char *, unsigned int));
1951 static struct C_stab_entry * in_word_set P_((const char *, unsigned int));
1952 static enum sym_type C_symtype P_((char *, int, int));
1954 /* Feed stuff between (but not including) %[ and %] lines to:
1955 gperf -c -k 1,3 -o -p -r -t
1956 then put a `static' keyword in front of the in_word_set function.
1958 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
1962 while, 0, st_C_ignore
1963 switch, 0, st_C_ignore
1964 return, 0, st_C_ignore
1965 @interface, 0, st_C_objprot
1966 @protocol, 0, st_C_objprot
1967 @implementation,0, st_C_objimpl
1968 @end, 0, st_C_objend
1969 import, C_JAVA, st_C_ignore
1970 package, C_JAVA, st_C_ignore
1971 friend, C_PLPL, st_C_ignore
1972 extends, C_JAVA, st_C_javastruct
1973 implements, C_JAVA, st_C_javastruct
1974 interface, C_JAVA, st_C_struct
1975 class, 0, st_C_class
1976 namespace, C_PLPL, st_C_struct
1977 domain, C_STAR, st_C_struct
1978 union, 0, st_C_struct
1979 struct, 0, st_C_struct
1980 extern, 0, st_C_extern
1982 typedef, 0, st_C_typedef
1983 define, 0, st_C_define
1984 operator, C_PLPL, st_C_operator
1985 bool, C_PLPL, st_C_typespec
1986 long, 0, st_C_typespec
1987 short, 0, st_C_typespec
1988 int, 0, st_C_typespec
1989 char, 0, st_C_typespec
1990 float, 0, st_C_typespec
1991 double, 0, st_C_typespec
1992 signed, 0, st_C_typespec
1993 unsigned, 0, st_C_typespec
1994 auto, 0, st_C_typespec
1995 void, 0, st_C_typespec
1996 static, 0, st_C_typespec
1997 const, 0, st_C_typespec
1998 volatile, 0, st_C_typespec
1999 explicit, C_PLPL, st_C_typespec
2000 mutable, C_PLPL, st_C_typespec
2001 typename, C_PLPL, st_C_typespec
2002 # DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach).
2003 DEFUN, 0, st_C_gnumacro
2004 SYSCALL, 0, st_C_gnumacro
2005 ENTRY, 0, st_C_gnumacro
2006 PSEUDO, 0, st_C_gnumacro
2007 # These are defined inside C functions, so currently they are not met.
2008 # EXFUN used in glibc, DEFVAR_* in emacs.
2009 #EXFUN, 0, st_C_gnumacro
2010 #DEFVAR_, 0, st_C_gnumacro
2012 and replace lines between %< and %> with its output,
2013 then make in_word_set static. */
2015 /* C code produced by gperf version 2.7.1 (19981006 egcs) */
2016 /* Command-line: gperf -c -k 1,3 -o -p -r -t */
2017 struct C_stab_entry { char *name; int c_ext; enum sym_type type; };
2019 #define TOTAL_KEYWORDS 46
2020 #define MIN_WORD_LENGTH 2
2021 #define MAX_WORD_LENGTH 15
2022 #define MIN_HASH_VALUE 13
2023 #define MAX_HASH_VALUE 121
2024 /* maximum key range = 109, duplicates = 0 */
2031 register const char *str;
2032 register unsigned int len;
2034 static unsigned char asso_values[] =
2036 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2037 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2038 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2039 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2040 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2041 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2042 122, 122, 122, 122, 57, 122, 122, 122, 55, 6,
2043 60, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2044 51, 122, 122, 10, 2, 122, 122, 122, 122, 122,
2045 122, 122, 122, 122, 122, 122, 122, 2, 52, 59,
2046 49, 38, 56, 41, 122, 22, 122, 122, 9, 32,
2047 33, 60, 26, 122, 1, 28, 46, 59, 44, 51,
2048 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2049 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2050 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2051 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2052 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2053 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2054 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2055 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2056 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2057 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2058 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2059 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2060 122, 122, 122, 122, 122, 122, 122, 122, 122, 122,
2061 122, 122, 122, 122, 122, 122
2063 register int hval = len;
2069 hval += asso_values[(unsigned char)str[2]];
2072 hval += asso_values[(unsigned char)str[0]];
2081 static struct C_stab_entry *
2082 in_word_set (str, len)
2083 register const char *str;
2084 register unsigned int len;
2086 static struct C_stab_entry wordlist[] =
2088 {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
2089 {""}, {""}, {""}, {""},
2090 {"ENTRY", 0, st_C_gnumacro},
2091 {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
2093 {"if", 0, st_C_ignore},
2095 {"SYSCALL", 0, st_C_gnumacro},
2096 {""}, {""}, {""}, {""}, {""}, {""}, {""},
2097 {"struct", 0, st_C_struct},
2098 {"static", 0, st_C_typespec},
2099 {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
2100 {"long", 0, st_C_typespec},
2101 {""}, {""}, {""}, {""}, {""},
2102 {"auto", 0, st_C_typespec},
2103 {"return", 0, st_C_ignore},
2104 {"import", C_JAVA, st_C_ignore},
2106 {"switch", 0, st_C_ignore},
2108 {"implements", C_JAVA, st_C_javastruct},
2110 {"for", 0, st_C_ignore},
2111 {"volatile", 0, st_C_typespec},
2113 {"PSEUDO", 0, st_C_gnumacro},
2115 {"char", 0, st_C_typespec},
2116 {"class", 0, st_C_class},
2117 {"@protocol", 0, st_C_objprot},
2119 {"void", 0, st_C_typespec},
2120 {"int", 0, st_C_typespec},
2121 {"explicit", C_PLPL, st_C_typespec},
2123 {"namespace", C_PLPL, st_C_struct},
2124 {"signed", 0, st_C_typespec},
2126 {"interface", C_JAVA, st_C_struct},
2127 {"while", 0, st_C_ignore},
2128 {"typedef", 0, st_C_typedef},
2129 {"typename", C_PLPL, st_C_typespec},
2131 {"friend", C_PLPL, st_C_ignore},
2132 {"mutable", C_PLPL, st_C_typespec},
2133 {"union", 0, st_C_struct},
2134 {"domain", C_STAR, st_C_struct},
2136 {"extern", 0, st_C_extern},
2137 {"extends", C_JAVA, st_C_javastruct},
2138 {"package", C_JAVA, st_C_ignore},
2139 {"short", 0, st_C_typespec},
2140 {"@end", 0, st_C_objend},
2141 {"unsigned", 0, st_C_typespec},
2143 {"const", 0, st_C_typespec},
2145 {"@interface", 0, st_C_objprot},
2146 {"enum", 0, st_C_enum},
2148 {"@implementation",0, st_C_objimpl},
2150 {"operator", C_PLPL, st_C_operator},
2151 {""}, {""}, {""}, {""},
2152 {"define", 0, st_C_define},
2154 {"double", 0, st_C_typespec},
2156 {"bool", C_PLPL, st_C_typespec},
2158 {"DEFUN", 0, st_C_gnumacro},
2159 {"float", 0, st_C_typespec}
2162 if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
2164 register int key = hash (str, len);
2166 if (key <= MAX_HASH_VALUE && key >= 0)
2168 register const char *s = wordlist[key].name;
2170 if (*str == *s && !strncmp (str + 1, s + 1, len - 1))
2171 return &wordlist[key];
2178 static enum sym_type
2179 C_symtype (str, len, c_ext)
2184 register struct C_stab_entry *se = in_word_set (str, len);
2186 if (se == NULL || (se->c_ext && !(c_ext & se->c_ext)))
2193 * C functions and variables are recognized using a simple
2194 * finite automaton. fvdef is its state variable.
2198 fvnone, /* nothing seen */
2199 fdefunkey, /* Emacs DEFUN keyword seen */
2200 fdefunname, /* Emacs DEFUN name seen */
2201 foperator, /* func: operator keyword seen (cplpl) */
2202 fvnameseen, /* function or variable name seen */
2203 fstartlist, /* func: just after open parenthesis */
2204 finlist, /* func: in parameter list */
2205 flistseen, /* func: after parameter list */
2206 fignore, /* func: before open brace */
2207 vignore /* var-like: ignore until ';' */
2210 bool fvextern; /* func or var: extern keyword seen; */
2213 * typedefs are recognized using a simple finite automaton.
2214 * typdef is its state variable.
2218 tnone, /* nothing seen */
2219 tkeyseen, /* typedef keyword seen */
2220 ttypeseen, /* defined type seen */
2221 tinbody, /* inside typedef body */
2222 tend, /* just before typedef tag */
2223 tignore /* junk after typedef tag */
2227 * struct-like structures (enum, struct and union) are recognized
2228 * using another simple finite automaton. `structdef' is its state
2233 snone, /* nothing seen yet,
2234 or in struct body if cblev > 0 */
2235 skeyseen, /* struct-like keyword seen */
2236 stagseen, /* struct-like tag seen */
2237 sintemplate, /* inside template (ignore) */
2238 scolonseen /* colon seen after struct-like tag */
2242 * When objdef is different from onone, objtag is the name of the class.
2244 char *objtag = "<uninited>";
2247 * Yet another little state machine to deal with preprocessor lines.
2251 dnone, /* nothing seen */
2252 dsharpseen, /* '#' seen as first char on line */
2253 ddefineseen, /* '#' and 'define' seen */
2254 dignorerest /* ignore rest of line */
2258 * State machine for Objective C protocols and implementations.
2259 * Idea by Tom R.Hageman <tom@basil.icce.rug.nl> (1995)
2263 onone, /* nothing seen */
2264 oprotocol, /* @interface or @protocol seen */
2265 oimplementation, /* @implementations seen */
2266 otagseen, /* class name seen */
2267 oparenseen, /* parenthesis before category seen */
2268 ocatseen, /* category name seen */
2269 oinbody, /* in @implementation body */
2270 omethodsign, /* in @implementation body, after +/- */
2271 omethodtag, /* after method name */
2272 omethodcolon, /* after method colon */
2273 omethodparm, /* after method parameter */
2274 oignore /* wait for @end */
2279 * Use this structure to keep info about the token read, and how it
2280 * should be tagged. Used by the make_C_tag function to build a tag.
2291 } token; /* latest token read */
2292 linebuffer token_name; /* its name */
2295 * Variables and functions for dealing with nested structures.
2296 * Idea by Mykola Dzyuba <mdzyuba@yahoo.com> (2001)
2298 static void pushclass_above P_((int, char *, int));
2299 static void popclass_above P_((int));
2300 static void write_classname P_((linebuffer *, char *qualifier));
2303 char **cname; /* nested class names */
2304 int *cblev; /* nested class curly brace level */
2305 int nl; /* class nesting level (elements used) */
2306 int size; /* length of the array */
2307 } cstack; /* stack for nested declaration tags */
2308 /* Current struct nesting depth (namespace, class, struct, union, enum). */
2309 #define nestlev (cstack.nl)
2310 /* After struct keyword or in struct body, not inside an nested function. */
2311 #define instruct (structdef == snone && nestlev > 0 \
2312 && cblev == cstack.cblev[nestlev-1] + 1)
2315 pushclass_above (cblev, str, len)
2322 popclass_above (cblev);
2324 if (nl >= cstack.size)
2326 int size = cstack.size *= 2;
2327 xrnew (cstack.cname, size, char *);
2328 xrnew (cstack.cblev, size, int);
2330 assert (nl == 0 || cstack.cblev[nl-1] < cblev);
2331 cstack.cname[nl] = (str == NULL) ? NULL : savenstr (str, len);
2332 cstack.cblev[nl] = cblev;
2337 popclass_above (cblev)
2342 for (nl = cstack.nl - 1;
2343 nl >= 0 && cstack.cblev[nl] >= cblev;
2346 if (cstack.cname[nl] != NULL)
2347 free (cstack.cname[nl]);
2353 write_classname (cn, qualifier)
2358 int qlen = strlen (qualifier);
2360 if (cstack.nl == 0 || cstack.cname[0] == NULL)
2364 cn->buffer[0] = '\0';
2368 len = strlen (cstack.cname[0]);
2369 linebuffer_setlen (cn, len);
2370 strcpy (cn->buffer, cstack.cname[0]);
2372 for (i = 1; i < cstack.nl; i++)
2377 s = cstack.cname[i];
2382 linebuffer_setlen (cn, len);
2383 strncat (cn->buffer, qualifier, qlen);
2384 strncat (cn->buffer, s, slen);
2389 static bool consider_token P_((char *, int, int, int *, int, int, bool *));
2390 static void make_C_tag P_((bool));
2394 * checks to see if the current token is at the start of a
2395 * function or variable, or corresponds to a typedef, or
2396 * is a struct/union/enum tag, or #define, or an enum constant.
2398 * *IS_FUNC gets TRUE iff the token is a function or #define macro
2399 * with args. C_EXTP points to which language we are looking at.
2410 consider_token (str, len, c, c_extp, cblev, parlev, is_func_or_var)
2411 register char *str; /* IN: token pointer */
2412 register int len; /* IN: token length */
2413 register int c; /* IN: first char after the token */
2414 int *c_extp; /* IN, OUT: C extensions mask */
2415 int cblev; /* IN: curly brace level */
2416 int parlev; /* IN: parenthesis level */
2417 bool *is_func_or_var; /* OUT: function or variable found */
2419 /* When structdef is stagseen, scolonseen, or snone with cblev > 0,
2420 structtype is the type of the preceding struct-like keyword, and
2421 structcblev is the curly brace level where it has been seen. */
2422 static enum sym_type structtype;
2423 static int structcblev;
2424 static enum sym_type toktype;
2427 toktype = C_symtype (str, len, *c_extp);
2430 * Advance the definedef state machine.
2435 /* We're not on a preprocessor line. */
2436 if (toktype == st_C_gnumacro)
2443 if (toktype == st_C_define)
2445 definedef = ddefineseen;
2449 definedef = dignorerest;
2454 * Make a tag for any macro, unless it is a constant
2455 * and constantypedefs is FALSE.
2457 definedef = dignorerest;
2458 *is_func_or_var = (c == '(');
2459 if (!*is_func_or_var && !constantypedefs)
2466 error ("internal error: definedef value.", (char *)NULL);
2475 if (toktype == st_C_typedef)
2497 if (structdef == snone && fvdef == fvnone)
2516 * This structdef business is NOT invoked when we are ctags and the
2517 * file is plain C. This is because a struct tag may have the same
2518 * name as another tag, and this loses with ctags.
2522 case st_C_javastruct:
2523 if (structdef == stagseen)
2524 structdef = scolonseen;
2528 && (*c_extp & C_AUTO) /* automatic detection of C++ language */
2529 && definedef == dnone && structdef == snone
2530 && typdef == tnone && fvdef == fvnone)
2531 *c_extp = (*c_extp | C_PLPL) & ~C_AUTO;
2537 && (typdef == tkeyseen
2538 || (typedefs_or_cplusplus && structdef == snone)))
2540 structdef = skeyseen;
2541 structtype = toktype;
2542 structcblev = cblev;
2547 if (structdef == skeyseen)
2549 structdef = stagseen;
2553 if (typdef != tnone)
2556 /* Detect Objective C constructs. */
2566 objdef = oimplementation;
2570 case oimplementation:
2571 /* Save the class tag for functions or variables defined inside. */
2572 objtag = savenstr (str, len);
2576 /* Save the class tag for categories. */
2577 objtag = savenstr (str, len);
2579 *is_func_or_var = TRUE;
2583 *is_func_or_var = TRUE;
2590 objdef = omethodtag;
2591 linebuffer_setlen (&token_name, len);
2592 strncpy (token_name.buffer, str, len);
2593 token_name.buffer[len] = '\0';
2599 objdef = omethodparm;
2604 objdef = omethodtag;
2605 linebuffer_setlen (&token_name, token_name.len + len);
2606 strncat (token_name.buffer, str, len);
2611 if (toktype == st_C_objend)
2613 /* Memory leakage here: the string pointed by objtag is
2614 never released, because many tests would be needed to
2615 avoid breaking on incorrect input code. The amount of
2616 memory leaked here is the sum of the lengths of the
2624 /* A function, variable or enum constant? */
2631 if (fvdef != finlist && fvdef != fignore && fvdef != vignore)
2632 fvdef = fvnone; /* should be useless */
2640 *is_func_or_var = TRUE;
2644 && structdef == snone
2645 && structtype == st_C_enum && cblev > structcblev)
2646 return TRUE; /* enum constant */
2652 fvdef = fdefunname; /* GNU macro */
2653 *is_func_or_var = TRUE;
2656 if ((strneq (str, "asm", 3) && endtoken (str[3]))
2657 || (strneq (str, "__asm__", 7) && endtoken (str[7])))
2662 if ((*c_extp & C_PLPL) && strneq (str+len-10, "::operator", 10))
2665 *is_func_or_var = TRUE;
2668 if (cblev > 0 && !instruct)
2670 fvdef = fvnameseen; /* function or variable */
2671 *is_func_or_var = TRUE;
2682 * C_entries often keeps pointers to tokens or lines which are older than
2683 * the line currently read. By keeping two line buffers, and switching
2684 * them at end of line, it is possible to use those pointers.
2692 #define current_lb_is_new (newndx == curndx)
2693 #define switch_line_buffers() (curndx = 1 - curndx)
2695 #define curlb (lbs[curndx].lb)
2696 #define newlb (lbs[newndx].lb)
2697 #define curlinepos (lbs[curndx].linepos)
2698 #define newlinepos (lbs[newndx].linepos)
2700 #define CNL_SAVE_DEFINEDEF() \
2702 curlinepos = charno; \
2704 linecharno = charno; \
2705 charno += readline (&curlb, inf); \
2706 lp = curlb.buffer; \
2713 CNL_SAVE_DEFINEDEF(); \
2714 if (savetoken.valid) \
2716 token = savetoken; \
2717 savetoken.valid = FALSE; \
2719 definedef = dnone; \
2727 /* This function should never be called when token.valid is FALSE, but
2728 we must protect against invalid input or internal errors. */
2729 if (DEBUG || token.valid)
2731 if (traditional_tag_style)
2733 /* This was the original code. Now we call new_pfnote instead,
2734 which uses the new method for naming tags (see new_pfnote). */
2737 if (CTAGS || token.named)
2738 name = savestr (token_name.buffer);
2739 if (DEBUG && !token.valid)
2742 name = concat (name, "##invalid##", "");
2744 name = savestr ("##invalid##");
2746 pfnote (name, isfun, token.line,
2747 token.offset+token.length+1, token.lineno, token.linepos);
2750 new_pfnote (token_name.buffer, token_name.len, isfun, token.line,
2751 token.offset+token.length+1, token.lineno, token.linepos);
2752 token.valid = FALSE;
2759 * This routine finds functions, variables, typedefs,
2760 * #define's, enum constants and struct/union/enum definitions in
2761 * C syntax and adds them to the list.
2764 C_entries (c_ext, inf)
2765 int c_ext; /* extension of C */
2766 FILE *inf; /* input file */
2768 register char c; /* latest char read; '\0' for end of line */
2769 register char *lp; /* pointer one beyond the character `c' */
2770 int curndx, newndx; /* indices for current and new lb */
2771 register int tokoff; /* offset in line of start of current token */
2772 register int toklen; /* length of current token */
2773 char *qualifier; /* string used to qualify names */
2774 int qlen; /* length of qualifier */
2775 int cblev; /* current curly brace level */
2776 int parlev; /* current parenthesis level */
2777 int typdefcblev; /* cblev where a typedef struct body begun */
2778 bool incomm, inquote, inchar, quotednl, midtoken;
2780 bool yacc_rules; /* in the rules part of a yacc file */
2781 struct tok savetoken; /* token saved during preprocessor handling */
2784 initbuffer (&token_name);
2785 initbuffer (&lbs[0].lb);
2786 initbuffer (&lbs[1].lb);
2787 if (cstack.size == 0)
2789 cstack.size = (DEBUG) ? 1 : 4;
2791 cstack.cname = xnew (cstack.size, char *);
2792 cstack.cblev = xnew (cstack.size, int);
2795 tokoff = toklen = 0; /* keep compiler quiet */
2796 curndx = newndx = 0;
2802 fvdef = fvnone; fvextern = FALSE; typdef = tnone;
2803 structdef = snone; definedef = dnone; objdef = onone;
2805 midtoken = inquote = inchar = incomm = quotednl = FALSE;
2806 token.valid = savetoken.valid = FALSE;
2809 cplpl = (c_ext & C_PLPL) == C_PLPL;
2810 cjava = (c_ext & C_JAVA) == C_JAVA;
2812 { qualifier = "."; qlen = 1; }
2814 { qualifier = "::"; qlen = 2; }
2822 /* If we're at the end of the line, the next character is a
2823 '\0'; don't skip it, because it's the thing that tells us
2824 to read the next line. */
2845 /* Newlines inside comments do not end macro definitions in
2847 CNL_SAVE_DEFINEDEF ();
2860 /* Newlines inside strings do not end macro definitions
2861 in traditional cpp, even though compilers don't
2862 usually accept them. */
2863 CNL_SAVE_DEFINEDEF ();
2873 /* Hmmm, something went wrong. */
2902 if (fvdef != finlist && fvdef != fignore && fvdef !=vignore)
2915 else if (/* cplpl && */ *lp == '/')
2923 if ((c_ext & YACC) && *lp == '%')
2925 /* Entering or exiting rules section in yacc file. */
2927 definedef = dnone; fvdef = fvnone; fvextern = FALSE;
2928 typdef = tnone; structdef = snone;
2929 midtoken = inquote = inchar = incomm = quotednl = FALSE;
2931 yacc_rules = !yacc_rules;
2937 if (definedef == dnone)
2940 bool cpptoken = TRUE;
2942 /* Look back on this line. If all blanks, or nonblanks
2943 followed by an end of comment, this is a preprocessor
2945 for (cp = newlb.buffer; cp < lp-1; cp++)
2948 if (*cp == '*' && *(cp+1) == '/')
2957 definedef = dsharpseen;
2958 } /* if (definedef == dnone) */
2964 /* Consider token only if some involved conditions are satisfied. */
2965 if (typdef != tignore
2966 && definedef != dignorerest
2968 && structdef != sintemplate
2969 && (definedef != dnone
2970 || structdef != scolonseen))
2976 if (c == ':' && cplpl && *lp == ':' && begtoken (lp[1]))
2979 * This handles :: in the middle, but not at the
2980 * beginning of an identifier. Also, space-separated
2981 * :: is not recognised.
2986 goto still_in_token;
2990 bool funorvar = FALSE;
2993 || consider_token (newlb.buffer + tokoff, toklen, c,
2994 &c_ext, cblev, parlev, &funorvar))
2996 if (fvdef == foperator)
2999 lp = skip_spaces (lp-1);
3003 && !iswhite (*lp) && *lp != '(')
3006 toklen += lp - oldlp;
3008 token.named = FALSE;
3009 if ((c_ext & C_EXT) /* not pure C */
3010 && nestlev > 0 && definedef == dnone)
3011 /* in struct body */
3013 write_classname (&token_name, qualifier);
3014 linebuffer_setlen (&token_name,
3015 token_name.len+qlen+toklen);
3016 strcat (token_name.buffer, qualifier);
3017 strncat (token_name.buffer,
3018 newlb.buffer + tokoff, toklen);
3021 else if (objdef == ocatseen)
3022 /* Objective C category */
3024 int len = strlen (objtag) + 2 + toklen;
3025 linebuffer_setlen (&token_name, len);
3026 strcpy (token_name.buffer, objtag);
3027 strcat (token_name.buffer, "(");
3028 strncat (token_name.buffer,
3029 newlb.buffer + tokoff, toklen);
3030 strcat (token_name.buffer, ")");
3033 else if (objdef == omethodtag
3034 || objdef == omethodparm)
3035 /* Objective C method */
3039 else if (fvdef == fdefunname)
3040 /* GNU DEFUN and similar macros */
3042 bool defun = (newlb.buffer[tokoff] == 'F');
3046 /* Rewrite the tag so that emacs lisp DEFUNs
3047 can be found by their elisp name */
3054 linebuffer_setlen (&token_name, len);
3055 strncpy (token_name.buffer,
3056 newlb.buffer + off, len);
3057 token_name.buffer[len] = '\0';
3060 if (token_name.buffer[len] == '_')
3061 token_name.buffer[len] = '-';
3062 token.named = defun;
3066 linebuffer_setlen (&token_name, toklen);
3067 strncpy (token_name.buffer,
3068 newlb.buffer + tokoff, toklen);
3069 token_name.buffer[toklen] = '\0';
3070 /* Name macros and members. */
3071 token.named = (structdef == stagseen
3072 || typdef == ttypeseen
3075 && definedef == dignorerest)
3077 && definedef == dnone
3078 && structdef == snone
3081 token.lineno = lineno;
3082 token.offset = tokoff;
3083 token.length = toklen;
3084 token.line = newlb.buffer;
3085 token.linepos = newlinepos;
3088 if (definedef == dnone
3089 && (fvdef == fvnameseen
3090 || fvdef == foperator
3091 || structdef == stagseen
3093 || typdef == ttypeseen
3094 || objdef != onone))
3096 if (current_lb_is_new)
3097 switch_line_buffers ();
3099 else if (definedef != dnone
3100 || fvdef == fdefunname
3102 make_C_tag (funorvar);
3106 } /* if (endtoken (c)) */
3107 else if (intoken (c))
3113 } /* if (midtoken) */
3114 else if (begtoken (c))
3125 make_C_tag (TRUE); /* a function */
3132 if (structdef == stagseen && !cjava)
3134 popclass_above (cblev);
3141 if (!yacc_rules || lp == newlb.buffer + 1)
3143 tokoff = lp - 1 - newlb.buffer;
3148 } /* if (begtoken) */
3149 } /* if must look at token */
3152 /* Detect end of line, colon, comma, semicolon and various braces
3153 after having handled a token.*/
3157 if (yacc_rules && token.offset == 0 && token.valid)
3159 make_C_tag (FALSE); /* a yacc function */
3162 if (definedef != dnone)
3168 make_C_tag (TRUE); /* an Objective C class */
3172 objdef = omethodcolon;
3173 linebuffer_setlen (&token_name, token_name.len + 1);
3174 strcat (token_name.buffer, ":");
3177 if (structdef == stagseen)
3178 structdef = scolonseen;
3181 if (definedef != dnone)
3187 make_C_tag (FALSE); /* a typedef */
3197 if (typdef == tignore)
3201 if ((globals && cblev == 0 && (!fvextern || declarations))
3202 || (members && instruct))
3203 make_C_tag (FALSE); /* a variable */
3206 token.valid = FALSE;
3209 if ((declarations && typdef == tnone && !instruct)
3210 || (members && typdef != tignore && instruct))
3211 make_C_tag (TRUE); /* a function declaration */
3217 && structdef == stagseen && (c_ext & C_PLPL))
3218 make_C_tag (FALSE); /* forward declaration */
3220 /* The following instruction invalidates the token.
3221 Probably the token should be invalidated in all other
3222 cases where some state machine is reset prematurely. */
3223 token.valid = FALSE;
3224 } /* switch (fvdef) */
3230 if (structdef == stagseen)
3234 if (definedef != dnone)
3240 make_C_tag (TRUE); /* an Objective C method */
3256 case fvnameseen: /* a variable */
3257 if ((globals && cblev == 0 && (!fvextern || declarations))
3258 || (members && instruct))
3261 case flistseen: /* a function */
3262 if ((declarations && typdef == tnone && !instruct)
3263 || (members && typdef != tignore && instruct))
3265 make_C_tag (TRUE); /* a function declaration */
3268 else if (!declarations)
3270 token.valid = FALSE;
3275 if (structdef == stagseen)
3279 if (definedef != dnone)
3281 if (structdef == stagseen)
3288 make_C_tag (FALSE); /* a typedef */
3300 if ((members && cblev == 1)
3301 || (globals && cblev == 0
3302 && (!fvextern || declarations)))
3303 make_C_tag (FALSE); /* a variable */
3312 if (definedef != dnone)
3314 if (objdef == otagseen && parlev == 0)
3315 objdef = oparenseen;
3319 if (typdef == ttypeseen
3323 /* This handles constructs like:
3324 typedef void OperatorFun (int fun); */
3341 if (definedef != dnone)
3343 if (objdef == ocatseen && parlev == 1)
3345 make_C_tag (TRUE); /* an Objective C category */
3359 || typdef == ttypeseen))
3362 make_C_tag (FALSE); /* a typedef */
3365 else if (parlev < 0) /* can happen due to ill-conceived #if's. */
3369 if (definedef != dnone)
3371 if (typdef == ttypeseen)
3373 typdefcblev = cblev;
3379 make_C_tag (TRUE); /* a function */
3388 make_C_tag (TRUE); /* an Objective C class */
3393 make_C_tag (TRUE); /* an Objective C method */
3397 /* Neutralize `extern "C" {' grot. */
3398 if (cblev == 0 && structdef == snone && nestlev == 0
3405 case skeyseen: /* unnamed struct */
3406 pushclass_above (cblev, NULL, 0);
3409 case stagseen: /* named struct or enum */
3410 case scolonseen: /* a class */
3411 pushclass_above (cblev, token.line+token.offset, token.length);
3413 make_C_tag (FALSE); /* a struct or enum */
3419 if (definedef != dnone)
3421 if (fvdef == fstartlist)
3422 fvdef = fvnone; /* avoid tagging `foo' in `foo (*bar()) ()' */
3425 if (definedef != dnone)
3427 if (!noindentypedefs && lp == newlb.buffer + 1)
3429 cblev = 0; /* reset curly brace level if first column */
3430 parlev = 0; /* also reset paren level, just in case... */
3434 popclass_above (cblev);
3436 if (typdef == tinbody && cblev <= typdefcblev)
3438 assert (cblev == typdefcblev);
3443 if (definedef != dnone)
3453 if ((members && cblev == 1)
3454 || (globals && cblev == 0 && (!fvextern || declarations)))
3455 make_C_tag (FALSE); /* a variable */
3462 if (cplpl && structdef == stagseen)
3464 structdef = sintemplate;
3469 if (structdef == sintemplate)
3471 structdef = stagseen;
3477 if (objdef == oinbody && cblev == 0)
3479 objdef = omethodsign;
3484 case '#': case '~': case '&': case '%': case '/': case '|':
3485 case '^': case '!': case '.': case '?': case ']':
3486 if (definedef != dnone)
3488 /* These surely cannot follow a function tag in C. */
3501 if (objdef == otagseen)
3503 make_C_tag (TRUE); /* an Objective C class */
3506 /* If a macro spans multiple lines don't reset its state. */
3508 CNL_SAVE_DEFINEDEF ();
3514 } /* while not eof */
3516 free (token_name.buffer);
3517 free (lbs[0].lb.buffer);
3518 free (lbs[1].lb.buffer);
3522 * Process either a C++ file or a C file depending on the setting
3526 default_C_entries (inf)
3529 C_entries (cplusplus ? C_PLPL : C_AUTO, inf);
3532 /* Always do plain C. */
3534 plain_C_entries (inf)
3540 /* Always do C++. */
3542 Cplusplus_entries (inf)
3545 C_entries (C_PLPL, inf);
3548 /* Always do Java. */
3553 C_entries (C_JAVA, inf);
3561 C_entries (C_STAR, inf);
3564 /* Always do Yacc. */
3569 C_entries (YACC, inf);
3573 /* A useful macro. */
3574 #define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \
3575 for (lineno = charno = 0; /* loop initialization */ \
3576 !feof (file_pointer) /* loop test */ \
3577 && (lineno++, /* instructions at start of loop */ \
3578 linecharno = charno, \
3579 charno += readline (&line_buffer, file_pointer), \
3580 char_pointer = lb.buffer, \
3586 * Read a file, but do no processing. This is used to do regexp
3587 * matching on files that have no language defined.
3590 just_read_file (inf)
3593 register char *dummy;
3595 LOOP_ON_INPUT_LINES (inf, lb, dummy)
3600 /* Fortran parsing */
3602 static bool tail P_((char *));
3603 static void takeprec P_((void));
3604 static void getit P_((FILE *));
3610 register int len = 0;
3612 while (*cp != '\0' && lowcase (*cp) == lowcase (dbp[len]))
3614 if (*cp == '\0' && !intoken (dbp[len]))
3625 dbp = skip_spaces (dbp);
3629 dbp = skip_spaces (dbp);
3630 if (strneq (dbp, "(*)", 3))
3635 if (!ISDIGIT (*dbp))
3637 --dbp; /* force failure */
3642 while (ISDIGIT (*dbp));
3651 dbp = skip_spaces (dbp);
3655 linecharno = charno;
3656 charno += readline (&lb, inf);
3661 dbp = skip_spaces (dbp);
3663 if (!ISALPHA (*dbp) && *dbp != '_' && *dbp != '$')
3665 for (cp = dbp + 1; *cp != '\0' && intoken (*cp); cp++)
3667 pfnote (savenstr (dbp, cp-dbp), TRUE,
3668 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
3673 Fortran_functions (inf)
3676 LOOP_ON_INPUT_LINES (inf, lb, dbp)
3679 dbp++; /* Ratfor escape to fortran */
3680 dbp = skip_spaces (dbp);
3683 switch (lowcase (*dbp))
3686 if (tail ("integer"))
3694 if (tail ("logical"))
3698 if (tail ("complex") || tail ("character"))
3702 if (tail ("double"))
3704 dbp = skip_spaces (dbp);
3707 if (tail ("precision"))
3713 dbp = skip_spaces (dbp);
3716 switch (lowcase (*dbp))
3719 if (tail ("function"))
3723 if (tail ("subroutine"))
3731 if (tail ("blockdata") || tail ("block data"))
3733 dbp = skip_spaces (dbp);
3734 if (*dbp == '\0') /* assume un-named */
3735 pfnote (savestr ("blockdata"), TRUE,
3736 lb.buffer, dbp - lb.buffer, lineno, linecharno);
3738 getit (inf); /* look for name */
3748 * Philippe Waroquiers <philippe.waroquiers@eurocontrol.be> (1998)
3751 static void adagetit P_((FILE *, char *));
3753 /* Once we are positioned after an "interesting" keyword, let's get
3754 the real tag value necessary. */
3756 adagetit (inf, name_qualifier)
3758 char *name_qualifier;
3766 dbp = skip_spaces (dbp);
3768 || (dbp[0] == '-' && dbp[1] == '-'))
3771 linecharno = charno;
3772 charno += readline (&lb, inf);
3781 /* Skipping body of procedure body or package body or ....
3782 resetting qualifier to body instead of spec. */
3783 name_qualifier = "/b";
3789 /* Skipping type of task type or protected type ... */
3797 for (cp = dbp; *cp != '\0' && *cp != '"'; cp++)
3802 dbp = skip_spaces (dbp);
3805 && (ISALPHA (*cp) || ISDIGIT (*cp) || *cp == '_' || *cp == '.'));
3813 name = concat (dbp, name_qualifier, "");
3815 pfnote (name, TRUE, lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
3826 bool inquote = FALSE;
3828 LOOP_ON_INPUT_LINES (inf, lb, dbp)
3830 while (*dbp != '\0')
3832 /* Skip a string i.e. "abcd". */
3833 if (inquote || (*dbp == '"'))
3835 dbp = etags_strchr ((inquote) ? dbp : dbp+1, '"');
3840 continue; /* advance char */
3845 break; /* advance line */
3849 /* Skip comments. */
3850 if (dbp[0] == '-' && dbp[1] == '-')
3851 break; /* advance line */
3853 /* Skip character enclosed in single quote i.e. 'a'
3854 and skip single quote starting an attribute i.e. 'Image. */
3863 /* Search for beginning of a token. */
3864 if (!begtoken (*dbp))
3867 continue; /* advance char */
3870 /* We are at the beginning of a token. */
3875 if (!packages_only && tail ("function"))
3876 adagetit (inf, "/f");
3878 break; /* from switch */
3879 continue; /* advance char */
3882 if (!packages_only && tail ("procedure"))
3883 adagetit (inf, "/p");
3884 else if (tail ("package"))
3885 adagetit (inf, "/s");
3886 else if (tail ("protected")) /* protected type */
3887 adagetit (inf, "/t");
3889 break; /* from switch */
3890 continue; /* advance char */
3893 if (!packages_only && tail ("task"))
3894 adagetit (inf, "/k");
3895 else if (typedefs && !packages_only && tail ("type"))
3897 adagetit (inf, "/t");
3898 while (*dbp != '\0')
3902 break; /* from switch */
3903 continue; /* advance char */
3906 /* Look for the end of the token. */
3907 while (!endtoken (*dbp))
3910 } /* advance char */
3911 } /* advance line */
3916 * Bob Weiner, Motorola Inc., 4/3/94
3917 * Unix and microcontroller assembly tag handling
3918 * look for '^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]'
3926 LOOP_ON_INPUT_LINES (inf, lb, cp)
3928 /* If first char is alphabetic or one of [_.$], test for colon
3929 following identifier. */
3930 if (ISALPHA (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
3932 /* Read past label. */
3934 while (ISALNUM (*cp) || *cp == '_' || *cp == '.' || *cp == '$')
3936 if (*cp == ':' || iswhite (*cp))
3938 /* Found end of label, so copy it and add it to the table. */
3939 pfnote (savenstr(lb.buffer, cp-lb.buffer), TRUE,
3940 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
3949 * Perl sub names: look for /^sub[ \t\n]+[^ \t\n{]+/
3950 * Perl variable names: /^(my|local).../
3951 * Bart Robinson <lomew@cs.utah.edu> (1995)
3952 * Michael Ernst <mernst@alum.mit.edu> (1997)
3955 Perl_functions (inf)
3960 LOOP_ON_INPUT_LINES (inf, lb, cp)
3964 && *cp++ == 'b' && iswhite (*cp++))
3966 cp = skip_spaces (cp);
3971 && !iswhite (*cp) && *cp != '{' && *cp != '(')
3973 pfnote (savenstr (sp, cp-sp), TRUE,
3974 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
3977 else if (globals /* only if tagging global vars is enabled */
3978 && ((cp = lb.buffer,
3987 && (*cp == '(' || iswhite (*cp)))
3989 /* After "my" or "local", but before any following paren or space. */
3990 char *varname = NULL;
3992 cp = skip_spaces (cp);
3993 if (*cp == '$' || *cp == '@' || *cp == '%')
3995 char* varstart = ++cp;
3996 while (ISALNUM (*cp) || *cp == '_')
3998 varname = savenstr (varstart, cp-varstart);
4002 /* Should be examining a variable list at this point;
4003 could insist on seeing an open parenthesis. */
4004 while (*cp != '\0' && *cp != ';' && *cp != '=' && *cp != ')')
4008 /* Perhaps I should back cp up one character, so the TAGS table
4009 doesn't mention (and so depend upon) the following char. */
4010 pfnote ((CTAGS) ? savenstr (lb.buffer, cp-lb.buffer) : varname,
4011 FALSE, lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
4019 * Look for /^def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/
4020 * Eric S. Raymond <esr@thyrsus.com> (1997)
4023 Python_functions (inf)
4028 LOOP_ON_INPUT_LINES (inf, lb, cp)
4032 && *cp++ == 'f' && iswhite (*cp++))
4034 cp = skip_spaces (cp);
4035 while (*cp != '\0' && !iswhite (*cp) && *cp != '(' && *cp != ':')
4038 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
4046 && *cp++ == 's' && iswhite (*cp++))
4048 cp = skip_spaces (cp);
4049 while (*cp != '\0' && !iswhite (*cp) && *cp != '(' && *cp != ':')
4052 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
4058 /* Idea by Corny de Souza
4059 * Cobol tag functions
4060 * We could look for anything that could be a paragraph name.
4061 * i.e. anything that starts in column 8 is one word and ends in a full stop.
4064 Cobol_paragraphs (inf)
4067 register char *bp, *ep;
4069 LOOP_ON_INPUT_LINES (inf, lb, bp)
4075 /* If eoln, compiler option or comment ignore whole line. */
4076 if (bp[-1] != ' ' || !ISALNUM (bp[0]))
4079 for (ep = bp; ISALNUM (*ep) || *ep == '-'; ep++)
4082 pfnote (savenstr (bp, ep-bp), TRUE,
4083 lb.buffer, ep - lb.buffer + 1, lineno, linecharno);
4090 * Idea by Assar Westerlund <assar@sics.se> (2001)
4093 Makefile_targets (inf)
4098 LOOP_ON_INPUT_LINES (inf, lb, bp)
4100 if (*bp == '\t' || *bp == '#')
4102 while (*bp != '\0' && *bp != '=' && *bp != ':')
4105 pfnote (savenstr (lb.buffer, bp - lb.buffer), TRUE,
4106 lb.buffer, bp - lb.buffer + 1, lineno, linecharno);
4111 /* Added by Mosur Mohan, 4/22/88 */
4112 /* Pascal parsing */
4115 * Locates tags for procedures & functions. Doesn't do any type- or
4116 * var-definitions. It does look for the keyword "extern" or
4117 * "forward" immediately following the procedure statement; if found,
4118 * the tag is skipped.
4121 Pascal_functions (inf)
4124 linebuffer tline; /* mostly copied from C_entries */
4126 int save_lineno, save_len;
4127 char c, *cp, *namebuf;
4129 bool /* each of these flags is TRUE iff: */
4130 incomment, /* point is inside a comment */
4131 inquote, /* point is inside '..' string */
4132 get_tagname, /* point is after PROCEDURE/FUNCTION
4133 keyword, so next item = potential tag */
4134 found_tag, /* point is after a potential tag */
4135 inparms, /* point is within parameter-list */
4136 verify_tag; /* point has passed the parm-list, so the
4137 next token will determine whether this
4138 is a FORWARD/EXTERN to be ignored, or
4139 whether it is a real tag */
4141 save_lcno = save_lineno = save_len = 0; /* keep compiler quiet */
4142 namebuf = NULL; /* keep compiler quiet */
4147 initbuffer (&tline);
4149 incomment = inquote = FALSE;
4150 found_tag = FALSE; /* have a proc name; check if extern */
4151 get_tagname = FALSE; /* have found "procedure" keyword */
4152 inparms = FALSE; /* found '(' after "proc" */
4153 verify_tag = FALSE; /* check if "extern" is ahead */
4156 while (!feof (inf)) /* long main loop to get next char */
4159 if (c == '\0') /* if end of line */
4162 linecharno = charno;
4163 charno += readline (&lb, inf);
4167 if (!((found_tag && verify_tag)
4169 c = *dbp++; /* only if don't need *dbp pointing
4170 to the beginning of the name of
4171 the procedure or function */
4175 if (c == '}') /* within { } comments */
4177 else if (c == '*' && *dbp == ')') /* within (* *) comments */
4194 inquote = TRUE; /* found first quote */
4196 case '{': /* found open { comment */
4200 if (*dbp == '*') /* found open (* comment */
4205 else if (found_tag) /* found '(' after tag, i.e., parm-list */
4208 case ')': /* end of parms list */
4213 if (found_tag && !inparms) /* end of proc or fn stmt */
4220 if (found_tag && verify_tag && (*dbp != ' '))
4222 /* check if this is an "extern" declaration */
4225 if (lowcase (*dbp == 'e'))
4227 if (tail ("extern")) /* superfluous, really! */
4233 else if (lowcase (*dbp) == 'f')
4235 if (tail ("forward")) /* check for forward reference */
4241 if (found_tag && verify_tag) /* not external proc, so make tag */
4245 pfnote (namebuf, TRUE,
4246 tline.buffer, save_len, save_lineno, save_lcno);
4250 if (get_tagname) /* grab name of proc or fn */
4255 /* save all values for later tagging */
4256 linebuffer_setlen (&tline, lb.len);
4257 strcpy (tline.buffer, lb.buffer);
4258 save_lineno = lineno;
4259 save_lcno = linecharno;
4261 /* grab block name */
4262 for (cp = dbp + 1; *cp != '\0' && !endtoken (*cp); cp++)
4264 namebuf = savenstr (dbp, cp-dbp);
4265 dbp = cp; /* set dbp to e-o-token */
4266 save_len = dbp - lb.buffer + 1;
4267 get_tagname = FALSE;
4271 /* and proceed to check for "extern" */
4273 else if (!incomment && !inquote && !found_tag)
4275 /* check for proc/fn keywords */
4276 switch (lowcase (c))
4279 if (tail ("rocedure")) /* c = 'p', dbp has advanced */
4283 if (tail ("unction"))
4288 } /* while not eof */
4290 free (tline.buffer);
4295 * Lisp tag functions
4296 * look for (def or (DEF, quote or QUOTE
4299 static int L_isdef P_((char *));
4300 static int L_isquote P_((char *));
4301 static void L_getit P_((void));
4305 register char *strp;
4307 return ((strp[1] == 'd' || strp[1] == 'D')
4308 && (strp[2] == 'e' || strp[2] == 'E')
4309 && (strp[3] == 'f' || strp[3] == 'F'));
4314 register char *strp;
4316 return ((*++strp == 'q' || *strp == 'Q')
4317 && (*++strp == 'u' || *strp == 'U')
4318 && (*++strp == 'o' || *strp == 'O')
4319 && (*++strp == 't' || *strp == 'T')
4320 && (*++strp == 'e' || *strp == 'E')
4321 && iswhite (*++strp));
4329 if (*dbp == '\'') /* Skip prefix quote */
4331 else if (*dbp == '(')
4333 if (L_isquote (dbp))
4334 dbp += 7; /* Skip "(quote " */
4336 dbp += 1; /* Skip "(" before name in (defstruct (foo)) */
4337 dbp = skip_spaces (dbp);
4340 for (cp = dbp /*+1*/;
4341 *cp != '\0' && *cp != '(' && !iswhite(*cp) && *cp != ')';
4347 pfnote (savenstr (dbp, cp-dbp), TRUE,
4348 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
4352 Lisp_functions (inf)
4355 LOOP_ON_INPUT_LINES (inf, lb, dbp)
4361 dbp = skip_non_spaces (dbp);
4362 dbp = skip_spaces (dbp);
4367 /* Check for (foo::defmumble name-defined ... */
4370 while (*dbp != '\0' && !iswhite (*dbp)
4371 && *dbp != ':' && *dbp != '(' && *dbp != ')');
4376 while (*dbp == ':');
4378 if (L_isdef (dbp - 1))
4380 dbp = skip_non_spaces (dbp);
4381 dbp = skip_spaces (dbp);
4392 * Postscript tag functions
4393 * Just look for lines where the first character is '/'
4394 * Also look at "defineps" for PSWrap
4395 * Richard Mlynarik <mly@adoc.xerox.com> (1997)
4396 * Ideas by Masatake Yamato <masata-y@is.aist-nara.ac.jp> (1999)
4399 Postscript_functions (inf)
4402 register char *bp, *ep;
4404 LOOP_ON_INPUT_LINES (inf, lb, bp)
4409 *ep != '\0' && *ep != ' ' && *ep != '{';
4412 pfnote (savenstr (bp, ep-bp), TRUE,
4413 lb.buffer, ep - lb.buffer + 1, lineno, linecharno);
4415 else if (strneq (bp, "defineps", 8))
4417 bp = skip_non_spaces (bp);
4418 bp = skip_spaces (bp);
4426 * Scheme tag functions
4427 * look for (def... xyzzy
4428 * look for (def... (xyzzy
4429 * look for (def ... ((...(xyzzy ....
4430 * look for (set! xyzzy
4434 Scheme_functions (inf)
4439 LOOP_ON_INPUT_LINES (inf, lb, bp)
4442 && (bp[1] == 'D' || bp[1] == 'd')
4443 && (bp[2] == 'E' || bp[2] == 'e')
4444 && (bp[3] == 'F' || bp[3] == 'f'))
4446 bp = skip_non_spaces (bp);
4447 /* Skip over open parens and white space */
4448 while (iswhite (*bp) || *bp == '(')
4453 && (bp[1] == 'S' || bp[1] == 's')
4454 && (bp[2] == 'E' || bp[2] == 'e')
4455 && (bp[3] == 'T' || bp[3] == 't')
4456 && (bp[4] == '!' || bp[4] == '!')
4457 && (iswhite (bp[5])))
4459 bp = skip_non_spaces (bp);
4460 bp = skip_spaces (bp);
4467 /* Find tags in TeX and LaTeX input files. */
4469 /* TEX_toktab is a table of TeX control sequences that define tags.
4470 Each TEX_tabent records one such control sequence.
4471 CONVERT THIS TO USE THE Stab TYPE!! */
4478 struct TEX_tabent *TEX_toktab = NULL; /* Table with tag tokens */
4480 /* Default set of control sequences to put into TEX_toktab.
4481 The value of environment var TEXTAGS is prepended to this. */
4483 char *TEX_defenv = "\
4484 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
4485 :part:appendix:entry:index";
4487 static void TEX_mode P_((FILE *));
4488 static struct TEX_tabent *TEX_decode_env P_((char *, char *));
4489 static int TEX_Token P_((char *));
4491 char TEX_esc = '\\';
4492 char TEX_opgrp = '{';
4493 char TEX_clgrp = '}';
4496 * TeX/LaTeX scanning loop.
4505 /* Select either \ or ! as escape character. */
4508 /* Initialize token table once from environment. */
4510 TEX_toktab = TEX_decode_env ("TEXTAGS", TEX_defenv);
4512 LOOP_ON_INPUT_LINES (inf, lb, cp)
4515 /* Look at each esc in line. */
4516 while ((cp = etags_strchr (cp, TEX_esc)) != NULL)
4520 linecharno += cp - lasthit;
4522 i = TEX_Token (lasthit);
4525 /* We seem to include the TeX command in the tag name.
4527 for (p = lasthit + TEX_toktab[i].len;
4528 *p != '\0' && *p != TEX_clgrp;
4531 pfnote (/*savenstr (lasthit, p-lasthit)*/ (char *)NULL, TRUE,
4532 lb.buffer, lb.len, lineno, linecharno);
4533 break; /* We only tag a line once */
4539 #define TEX_LESC '\\'
4540 #define TEX_SESC '!'
4543 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
4544 chars accordingly. */
4551 while ((c = getc (inf)) != EOF)
4553 /* Skip to next line if we hit the TeX comment char. */
4557 else if (c == TEX_LESC || c == TEX_SESC )
4573 /* If the input file is compressed, inf is a pipe, and rewind may fail.
4574 No attempt is made to correct the situation. */
4578 /* Read environment and prepend it to the default string.
4579 Build token table. */
4580 static struct TEX_tabent *
4581 TEX_decode_env (evarname, defenv)
4585 register char *env, *p;
4587 struct TEX_tabent *tab;
4590 /* Append default string to environment. */
4591 env = getenv (evarname);
4597 env = concat (oldenv, defenv, "");
4600 /* Allocate a token table */
4601 for (size = 1, p = env; p;)
4602 if ((p = etags_strchr (p, ':')) && *++p != '\0')
4604 /* Add 1 to leave room for null terminator. */
4605 tab = xnew (size + 1, struct TEX_tabent);
4607 /* Unpack environment string into token table. Be careful about */
4608 /* zero-length strings (leading ':', "::" and trailing ':') */
4611 p = etags_strchr (env, ':');
4612 if (!p) /* End of environment string. */
4613 p = env + strlen (env);
4615 { /* Only non-zero strings. */
4616 tab[i].name = savenstr (env, p - env);
4617 tab[i].len = strlen (tab[i].name);
4624 tab[i].name = NULL; /* Mark end of table. */
4632 /* If the text at CP matches one of the tag-defining TeX command names,
4633 return the pointer to the first occurrence of that command in TEX_toktab.
4634 Otherwise return -1.
4635 Keep the capital `T' in `token' for dumb truncating compilers
4636 (this distinguishes it from `TEX_toktab' */
4643 for (i = 0; TEX_toktab[i].len > 0; i++)
4644 if (strneq (TEX_toktab[i].name, cp, TEX_toktab[i].len))
4650 /* Texinfo support. Dave Love, Mar. 2000. */
4656 LOOP_ON_INPUT_LINES (inf, lb, cp)
4662 && *cp++ == 'e' && iswhite (*cp++)))
4664 start = cp = skip_spaces(cp);
4665 while (*cp != '\0' && *cp != ',')
4667 pfnote (savenstr (start, cp - start), TRUE,
4668 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
4675 * Prolog support (rewritten) by Anders Lindgren, Mar. 96
4677 * Assumes that the predicate starts at column 0.
4678 * Only the first clause of a predicate is added.
4680 static int prolog_pred P_((char *, char *));
4681 static void prolog_skip_comment P_((linebuffer *, FILE *));
4682 static int prolog_atom P_((char *, int));
4685 Prolog_functions (inf)
4696 LOOP_ON_INPUT_LINES (inf, lb, cp)
4698 if (cp[0] == '\0') /* Empty line */
4700 else if (iswhite (cp[0])) /* Not a predicate */
4702 else if (cp[0] == '/' && cp[1] == '*') /* comment. */
4703 prolog_skip_comment (&lb, inf);
4704 else if ((len = prolog_pred (cp, last)) > 0)
4706 /* Predicate. Store the function name so that we only
4707 generate a tag for the first clause. */
4709 last = xnew(len + 1, char);
4710 else if (len + 1 > allocated)
4711 xrnew (last, len + 1, char);
4712 allocated = len + 1;
4713 strncpy (last, cp, len);
4721 prolog_skip_comment (plb, inf)
4729 for (cp = plb->buffer; *cp != '\0'; cp++)
4730 if (cp[0] == '*' && cp[1] == '/')
4733 linecharno += readline (plb, inf);
4739 * A predicate definition is added if it matches:
4740 * <beginning of line><Prolog Atom><whitespace>(
4742 * It is added to the tags database if it doesn't match the
4743 * name of the previous clause header.
4745 * Return the size of the name of the predicate, or 0 if no header
4749 prolog_pred (s, last)
4751 char *last; /* Name of last clause. */
4756 pos = prolog_atom (s, 0);
4761 pos = skip_spaces (s + pos) - s;
4763 if ((s[pos] == '(') || (s[pos] == '.'))
4768 /* Save only the first clause. */
4770 || len != (int)strlen (last)
4771 || !strneq (s, last, len))
4773 pfnote (savenstr (s, len), TRUE, s, pos, lineno, linecharno);
4781 * Consume a Prolog atom.
4782 * Return the number of bytes consumed, or -1 if there was an error.
4784 * A prolog atom, in this context, could be one of:
4785 * - An alphanumeric sequence, starting with a lower case letter.
4786 * - A quoted arbitrary string. Single quotes can escape themselves.
4787 * Backslash quotes everything.
4790 prolog_atom (s, pos)
4798 if (ISLOWER(s[pos]) || (s[pos] == '_'))
4800 /* The atom is unquoted. */
4802 while (ISALNUM(s[pos]) || (s[pos] == '_'))
4806 return pos - origpos;
4808 else if (s[pos] == '\'')
4819 pos++; /* A double quote */
4821 else if (s[pos] == '\0')
4822 /* Multiline quoted atoms are ignored. */
4824 else if (s[pos] == '\\')
4826 if (s[pos+1] == '\0')
4833 return pos - origpos;
4841 * Support for Erlang -- Anders Lindgren, Feb 1996.
4843 * Generates tags for functions, defines, and records.
4845 * Assumes that Erlang functions start at column 0.
4847 static int erlang_func P_((char *, char *));
4848 static void erlang_attribute P_((char *));
4849 static int erlang_atom P_((char *, int));
4852 Erlang_functions (inf)
4863 LOOP_ON_INPUT_LINES (inf, lb, cp)
4865 if (cp[0] == '\0') /* Empty line */
4867 else if (iswhite (cp[0])) /* Not function nor attribute */
4869 else if (cp[0] == '%') /* comment */
4871 else if (cp[0] == '"') /* Sometimes, strings start in column one */
4873 else if (cp[0] == '-') /* attribute, e.g. "-define" */
4875 erlang_attribute (cp);
4878 else if ((len = erlang_func (cp, last)) > 0)
4881 * Function. Store the function name so that we only
4882 * generates a tag for the first clause.
4885 last = xnew (len + 1, char);
4886 else if (len + 1 > allocated)
4887 xrnew (last, len + 1, char);
4888 allocated = len + 1;
4889 strncpy (last, cp, len);
4897 * A function definition is added if it matches:
4898 * <beginning of line><Erlang Atom><whitespace>(
4900 * It is added to the tags database if it doesn't match the
4901 * name of the previous clause header.
4903 * Return the size of the name of the function, or 0 if no function
4907 erlang_func (s, last)
4909 char *last; /* Name of last clause. */
4914 pos = erlang_atom (s, 0);
4919 pos = skip_spaces (s + pos) - s;
4921 /* Save only the first clause. */
4924 || len != (int)strlen (last)
4925 || !strneq (s, last, len)))
4927 pfnote (savenstr (s, len), TRUE, s, pos, lineno, linecharno);
4936 * Handle attributes. Currently, tags are generated for defines
4939 * They are on the form:
4940 * -define(foo, bar).
4941 * -define(Foo(M, N), M+N).
4942 * -record(graph, {vtab = notable, cyclic = true}).
4945 erlang_attribute (s)
4951 if (strneq (s, "-define", 7) || strneq (s, "-record", 7))
4953 pos = skip_spaces (s + 7) - s;
4954 if (s[pos++] == '(')
4956 pos = skip_spaces (s + pos) - s;
4957 len = erlang_atom (s, pos);
4959 pfnote (savenstr (& s[pos], len), TRUE,
4960 s, pos + len, lineno, linecharno);
4968 * Consume an Erlang atom (or variable).
4969 * Return the number of bytes consumed, or -1 if there was an error.
4972 erlang_atom (s, pos)
4980 if (ISALPHA (s[pos]) || s[pos] == '_')
4982 /* The atom is unquoted. */
4984 while (ISALNUM (s[pos]) || s[pos] == '_')
4986 return pos - origpos;
4988 else if (s[pos] == '\'')
4999 else if (s[pos] == '\0')
5000 /* Multiline quoted atoms are ignored. */
5002 else if (s[pos] == '\\')
5004 if (s[pos+1] == '\0')
5011 return pos - origpos;
5018 #ifdef ETAGS_REGEXPS
5020 static char *scan_separators P_((char *));
5021 static void analyse_regex P_((char *, bool));
5022 static void add_regex P_((char *, bool, language *));
5023 static char *substitute P_((char *, char *, struct re_registers *));
5025 /* Take a string like "/blah/" and turn it into "blah", making sure
5026 that the first and last characters are the same, and handling
5027 quoted separator characters. Actually, stops on the occurrence of
5028 an unquoted separator. Also turns "\t" into a Tab character.
5029 Returns pointer to terminating separator. Works in place. Null
5030 terminates name string. */
5032 scan_separators (name)
5036 char *copyto = name;
5037 bool quoted = FALSE;
5039 for (++name; *name != '\0'; ++name)
5045 else if (*name == sep)
5049 /* Something else is quoted, so preserve the quote. */
5055 else if (*name == '\\')
5057 else if (*name == sep)
5063 /* Terminate copied string. */
5068 /* Look at the argument of --regex or --no-regex and do the right
5069 thing. Same for each line of a regexp file. */
5071 analyse_regex (regex_arg, ignore_case)
5075 if (regex_arg == NULL)
5076 free_patterns (); /* --no-regex: remove existing regexps */
5078 /* A real --regexp option or a line in a regexp file. */
5079 switch (regex_arg[0])
5081 /* Comments in regexp file or null arg to --regex. */
5087 /* Read a regex file. This is recursive and may result in a
5088 loop, which will stop when the file descriptors are exhausted. */
5092 linebuffer regexbuf;
5093 char *regexfile = regex_arg + 1;
5095 /* regexfile is a file containing regexps, one per line. */
5096 regexfp = fopen (regexfile, "r");
5097 if (regexfp == NULL)
5102 initbuffer (®exbuf);
5103 while (readline_internal (®exbuf, regexfp) > 0)
5104 analyse_regex (regexbuf.buffer, ignore_case);
5105 free (regexbuf.buffer);
5110 /* Regexp to be used for a specific language only. */
5114 char *lang_name = regex_arg + 1;
5117 for (cp = lang_name; *cp != '}'; cp++)
5120 error ("unterminated language name in regex: %s", regex_arg);
5124 lang = get_language_from_langname (lang_name);
5127 add_regex (cp + 1, ignore_case, lang);
5131 /* Regexp to be used for any language. */
5133 add_regex (regex_arg, ignore_case, NULL);
5138 /* Turn a name, which is an ed-style (but Emacs syntax) regular
5139 expression, into a real regular expression by compiling it. */
5141 add_regex (regexp_pattern, ignore_case, lang)
5142 char *regexp_pattern;
5148 struct re_pattern_buffer *patbuf;
5152 if (regexp_pattern[strlen(regexp_pattern)-1] != regexp_pattern[0])
5154 error ("%s: unterminated regexp", regexp_pattern);
5157 name = scan_separators (regexp_pattern);
5158 if (regexp_pattern[0] == '\0')
5160 error ("null regexp", (char *)NULL);
5163 (void) scan_separators (name);
5165 patbuf = xnew (1, struct re_pattern_buffer);
5166 /* Translation table to fold case if appropriate. */
5167 patbuf->translate = (ignore_case) ? lc_trans : NULL;
5168 patbuf->fastmap = NULL;
5169 patbuf->buffer = NULL;
5170 patbuf->allocated = 0;
5172 err = re_compile_pattern (regexp_pattern, strlen (regexp_pattern), patbuf);
5175 error ("%s while compiling pattern", err);
5180 p_head = xnew (1, pattern);
5181 p_head->regex = savestr (regexp_pattern);
5182 p_head->p_next = pp;
5183 p_head->language = lang;
5184 p_head->pattern = patbuf;
5185 p_head->name_pattern = savestr (name);
5186 p_head->error_signaled = FALSE;
5190 * Do the substitutions indicated by the regular expression and
5194 substitute (in, out, regs)
5196 struct re_registers *regs;
5199 int size, dig, diglen;
5202 size = strlen (out);
5204 /* Pass 1: figure out how much to allocate by finding all \N strings. */
5205 if (out[size - 1] == '\\')
5206 fatal ("pattern error in \"%s\"", out);
5207 for (t = etags_strchr (out, '\\');
5209 t = etags_strchr (t + 2, '\\'))
5213 diglen = regs->end[dig] - regs->start[dig];
5219 /* Allocate space and do the substitutions. */
5220 result = xnew (size + 1, char);
5222 for (t = result; *out != '\0'; out++)
5223 if (*out == '\\' && ISDIGIT (*++out))
5226 diglen = regs->end[dig] - regs->start[dig];
5227 strncpy (t, in + regs->start[dig], diglen);
5234 assert (t <= result + size && t - result == (int)strlen (result));
5239 /* Deallocate all patterns. */
5244 while (p_head != NULL)
5246 pp = p_head->p_next;
5247 free (p_head->regex);
5248 free (p_head->name_pattern);
5254 #endif /* ETAGS_REGEXPS */
5265 /* Go till you get to white space or a syntactic break */
5267 *cp != '\0' && *cp != '(' && *cp != ')' && !iswhite (*cp);
5270 pfnote (savenstr (bp, cp-bp), TRUE,
5271 lb.buffer, cp - lb.buffer + 1, lineno, linecharno);
5274 /* Initialize a linebuffer for use */
5279 lbp->size = (DEBUG) ? 3 : 200;
5280 lbp->buffer = xnew (lbp->size, char);
5281 lbp->buffer[0] = '\0';
5286 * Read a line of text from `stream' into `lbp', excluding the
5287 * newline or CR-NL, if any. Return the number of characters read from
5288 * `stream', which is the length of the line including the newline.
5290 * On DOS or Windows we do not count the CR character, if any, before the
5291 * NL, in the returned length; this mirrors the behavior of emacs on those
5292 * platforms (for text files, it translates CR-NL to NL as it reads in the
5296 readline_internal (lbp, stream)
5298 register FILE *stream;
5300 char *buffer = lbp->buffer;
5301 register char *p = lbp->buffer;
5302 register char *pend;
5305 pend = p + lbp->size; /* Separate to avoid 386/IX compiler bug. */
5309 register int c = getc (stream);
5312 /* We're at the end of linebuffer: expand it. */
5314 xrnew (buffer, lbp->size, char);
5315 p += buffer - lbp->buffer;
5316 pend = buffer + lbp->size;
5317 lbp->buffer = buffer;
5327 if (p > buffer && p[-1] == '\r')
5331 /* Assume CRLF->LF translation will be performed by Emacs
5332 when loading this file, so CRs won't appear in the buffer.
5333 It would be cleaner to compensate within Emacs;
5334 however, Emacs does not know how many CRs were deleted
5335 before any given point in the file. */
5350 lbp->len = p - buffer;
5352 return lbp->len + chars_deleted;
5356 * Like readline_internal, above, but in addition try to match the
5357 * input line against relevant regular expressions.
5360 readline (lbp, stream)
5364 /* Read new line. */
5365 long result = readline_internal (lbp, stream);
5366 #ifdef ETAGS_REGEXPS
5370 /* Match against relevant patterns. */
5372 for (pp = p_head; pp != NULL; pp = pp->p_next)
5374 /* Only use generic regexps or those for the current language. */
5375 if (pp->language != NULL && pp->language != curlang)
5378 match = re_match (pp->pattern, lbp->buffer, lbp->len, 0, &pp->regs);
5383 if (!pp->error_signaled)
5385 error ("error while matching \"%s\"", pp->regex);
5386 pp->error_signaled = TRUE;
5393 /* Match occurred. Construct a tag. */
5394 if (pp->name_pattern[0] != '\0')
5396 /* Make a named tag. */
5397 char *name = substitute (lbp->buffer,
5398 pp->name_pattern, &pp->regs);
5400 pfnote (name, TRUE, lbp->buffer, match, lineno, linecharno);
5404 /* Make an unnamed tag. */
5405 pfnote ((char *)NULL, TRUE,
5406 lbp->buffer, match, lineno, linecharno);
5411 #endif /* ETAGS_REGEXPS */
5418 * Return a pointer to a space of size strlen(cp)+1 allocated
5419 * with xnew where the string CP has been copied.
5425 return savenstr (cp, strlen (cp));
5429 * Return a pointer to a space of size LEN+1 allocated with xnew where
5430 * the string CP has been copied for at most the first LEN characters.
5439 dp = xnew (len + 1, char);
5440 strncpy (dp, cp, len);
5446 * Return the ptr in sp at which the character c last
5447 * appears; NULL if not found
5449 * Identical to POSIX strrchr, included for portability.
5452 etags_strrchr (sp, c)
5453 register const char *sp;
5456 register const char *r;
5469 * Return the ptr in sp at which the character c first
5470 * appears; NULL if not found
5472 * Identical to POSIX strchr, included for portability.
5475 etags_strchr (sp, c)
5476 register const char *sp;
5487 /* Skip spaces, return new pointer. */
5492 while (iswhite (*cp))
5497 /* Skip non spaces, return new pointer. */
5499 skip_non_spaces (cp)
5502 while (*cp != '\0' && !iswhite (*cp))
5507 /* Print error message and exit. */
5525 suggest_asking_for_help ()
5527 fprintf (stderr, "\tTry `%s %s' for a complete list of options.\n",
5538 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
5541 const char *s1, *s2;
5543 fprintf (stderr, "%s: ", progname);
5544 fprintf (stderr, s1, s2);
5545 fprintf (stderr, "\n");
5548 /* Return a newly-allocated string whose contents
5549 concatenate those of s1, s2, s3. */
5554 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
5555 char *result = xnew (len1 + len2 + len3 + 1, char);
5557 strcpy (result, s1);
5558 strcpy (result + len1, s2);
5559 strcpy (result + len1 + len2, s3);
5560 result[len1 + len2 + len3] = '\0';
5566 /* Does the same work as the system V getcwd, but does not need to
5567 guess the buffer size in advance. */
5573 char *path = xnew (bufsize, char);
5575 while (getcwd (path, bufsize) == NULL)
5577 if (errno != ERANGE)
5581 path = xnew (bufsize, char);
5584 canonicalize_filename (path);
5587 #else /* not HAVE_GETCWD */
5590 char *p, path[MAXPATHLEN + 1]; /* Fixed size is safe on MSDOS. */
5594 for (p = path; *p != '\0'; p++)
5600 return strdup (path);
5601 #else /* not MSDOS */
5606 pipe = (FILE *) popen ("pwd 2>/dev/null", "r");
5607 if (pipe == NULL || readline_internal (&path, pipe) == 0)
5612 #endif /* not MSDOS */
5613 #endif /* not HAVE_GETCWD */
5616 /* Return a newly allocated string containing the file name of FILE
5617 relative to the absolute directory DIR (which should end with a slash). */
5619 relative_filename (file, dir)
5622 char *fp, *dp, *afn, *res;
5625 /* Find the common root of file and dir (with a trailing slash). */
5626 afn = absolute_filename (file, cwd);
5629 while (*fp++ == *dp++)
5631 fp--, dp--; /* back to the first differing char */
5633 if (fp == afn && afn[0] != '/') /* cannot build a relative name */
5636 do /* look at the equal chars until '/' */
5640 /* Build a sequence of "../" strings for the resulting relative file name. */
5642 while ((dp = etags_strchr (dp + 1, '/')) != NULL)
5644 res = xnew (3*i + strlen (fp + 1) + 1, char);
5647 strcat (res, "../");
5649 /* Add the file name relative to the common root of file and dir. */
5650 strcat (res, fp + 1);
5656 /* Return a newly allocated string containing the absolute file name
5657 of FILE given DIR (which should end with a slash). */
5659 absolute_filename (file, dir)
5662 char *slashp, *cp, *res;
5664 if (filename_is_absolute (file))
5665 res = savestr (file);
5667 /* We don't support non-absolute file names with a drive
5668 letter, like `d:NAME' (it's too much hassle). */
5669 else if (file[1] == ':')
5670 fatal ("%s: relative file names with drive letters not supported", file);
5673 res = concat (dir, file, "");
5675 /* Delete the "/dirname/.." and "/." substrings. */
5676 slashp = etags_strchr (res, '/');
5677 while (slashp != NULL && slashp[0] != '\0')
5679 if (slashp[1] == '.')
5681 if (slashp[2] == '.'
5682 && (slashp[3] == '/' || slashp[3] == '\0'))
5687 while (cp >= res && !filename_is_absolute (cp));
5689 cp = slashp; /* the absolute name begins with "/.." */
5691 /* Under MSDOS and NT we get `d:/NAME' as absolute
5692 file name, so the luser could say `d:/../NAME'.
5693 We silently treat this as `d:/NAME'. */
5694 else if (cp[0] != '/')
5697 strcpy (cp, slashp + 3);
5701 else if (slashp[2] == '/' || slashp[2] == '\0')
5703 strcpy (slashp, slashp + 2);
5708 slashp = etags_strchr (slashp + 1, '/');
5712 return savestr ("/");
5717 /* Return a newly allocated string containing the absolute
5718 file name of dir where FILE resides given DIR (which should
5719 end with a slash). */
5721 absolute_dirname (file, dir)
5727 canonicalize_filename (file);
5728 slashp = etags_strrchr (file, '/');
5730 return savestr (dir);
5733 res = absolute_filename (file, dir);
5739 /* Whether the argument string is an absolute file name. The argument
5740 string must have been canonicalized with canonicalize_filename. */
5742 filename_is_absolute (fn)
5745 return (fn[0] == '/'
5747 || (ISALPHA(fn[0]) && fn[1] == ':' && fn[2] == '/')
5752 /* Translate backslashes into slashes. Works in place. */
5754 canonicalize_filename (fn)
5758 /* Canonicalize drive letter case. */
5759 if (fn[0] != '\0' && fn[1] == ':' && ISLOWER (fn[0]))
5760 fn[0] = upcase (fn[0]);
5761 /* Convert backslashes to slashes. */
5762 for (; *fn != '\0'; fn++)
5767 fn = NULL; /* shut up the compiler */
5771 /* Set the minimum size of a string contained in a linebuffer. */
5773 linebuffer_setlen (lbp, toksize)
5777 while (lbp->size <= toksize)
5780 xrnew (lbp->buffer, lbp->size, char);
5785 /* Like malloc but get fatal error if memory is exhausted. */
5790 long *result = (long *) malloc (size);
5792 fatal ("virtual memory exhausted", (char *)NULL);
5797 xrealloc (ptr, size)
5801 long *result = (long *) realloc (ptr, size);
5803 fatal ("virtual memory exhausted", (char *)NULL);