1 /* Tags file maker to go with GNU Emacs -*- coding: latin-1 -*-
3 Copyright (C) 1984 The Regents of the University of California
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are
8 1. Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 2. Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the
14 3. Neither the name of the University nor the names of its
15 contributors may be used to endorse or promote products derived
16 from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
19 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
22 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 Copyright (C) 1984, 1987-1989, 1993-1995, 1998-2012
32 Free Software Foundation, Inc.
34 This file is not considered part of GNU Emacs.
36 This program is free software: you can redistribute it and/or modify
37 it under the terms of the GNU General Public License as published by
38 the Free Software Foundation, either version 3 of the License, or
39 (at your option) any later version.
41 This program is distributed in the hope that it will be useful,
42 but WITHOUT ANY WARRANTY; without even the implied warranty of
43 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
44 GNU General Public License for more details.
46 You should have received a copy of the GNU General Public License
47 along with this program. If not, see <http://www.gnu.org/licenses/>. */
50 /* NB To comply with the above BSD license, copyright information is
51 reproduced in etc/ETAGS.README. That file should be updated when the
54 To the best of our knowledge, this code was originally based on the
55 ctags.c distributed with BSD4.2, which was copyrighted by the
56 University of California, as described above. */
61 * 1983 Ctags originally by Ken Arnold.
62 * 1984 Fortran added by Jim Kleckner.
63 * 1984 Ed Pelegri-Llopart added C typedefs.
64 * 1985 Emacs TAGS format by Richard Stallman.
65 * 1989 Sam Kendall added C++.
66 * 1992 Joseph B. Wells improved C and C++ parsing.
67 * 1993 Francesco Potortì reorganized C and C++.
68 * 1994 Line-by-line regexp tags by Tom Tromey.
69 * 2001 Nested classes by Francesco Potortì (concept by Mykola Dzyuba).
70 * 2002 #line directives by Francesco Potortì.
72 * Francesco Potortì <pot@gnu.org> has maintained and improved it since 1993.
76 * If you want to add support for a new language, start by looking at the LUA
77 * language, which is the simplest. Alternatively, consider distributing etags
78 * together with a configuration file containing regexp definitions for etags.
81 char pot_etags_version
[] = "@(#) pot revision number is 17.38.1.4";
91 # define NDEBUG /* disable assert */
96 /* This is probably not necessary any more. On some systems, config.h
97 used to define static as nothing for the sake of unexec. We don't
98 want that here since we don't use unexec. None of these systems
99 are supported any more, but the idea is still mentioned in
102 # ifndef PTR /* for XEmacs */
105 #else /* no config.h */
106 # if defined (__STDC__) && (__STDC__ || defined (__SUNPRO_C))
107 # define PTR void * /* for generic pointers */
108 # else /* not standard C */
109 # define const /* remove const for old compilers' sake */
110 # define PTR long * /* don't use void* */
112 #endif /* !HAVE_CONFIG_H */
115 # define _GNU_SOURCE 1 /* enables some compiler checks on GNU */
118 /* WIN32_NATIVE is for XEmacs.
119 MSDOS, WINDOWSNT, DOS_NT are for Emacs. */
124 #endif /* WIN32_NATIVE */
130 # include <sys/param.h>
132 # ifndef HAVE_CONFIG_H
134 # include <sys/config.h>
144 # define MAXPATHLEN _MAX_PATH
150 # endif /* undef HAVE_GETCWD */
151 #else /* not WINDOWSNT */
152 #endif /* !WINDOWSNT */
155 #ifndef HAVE_UNISTD_H
156 # if defined (HAVE_GETCWD) && !defined (WINDOWSNT)
157 extern char *getcwd (char *buf
, size_t size
);
159 #endif /* HAVE_UNISTD_H */
167 #include <sys/types.h>
168 #include <sys/stat.h>
172 # undef assert /* some systems have a buggy assert.h */
173 # define assert(x) ((void) 0)
176 #ifdef NO_LONG_OPTIONS /* define this if you don't have GNU getopt */
177 # define NO_LONG_OPTIONS TRUE
178 # define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr)
180 extern int optind
, opterr
;
182 # define NO_LONG_OPTIONS FALSE
184 #endif /* NO_LONG_OPTIONS */
186 #ifndef HAVE_CONFIG_H /* this is a standalone compilation */
187 # ifdef __CYGWIN__ /* compiling on Cygwin */
189 the regex
.h distributed with Cygwin is
not compatible with etags
, alas
!
190 If you want regular expression support
, you should
delete this notice
and
191 arrange to use the GNU regex
.h
and regex
.c
.
196 /* Define CTAGS to make the program "ctags" compatible with the usual one.
197 Leave it undefined to make the program "etags", which makes emacs-style
198 tag tables and tags typedefs, #defines and struct/union/enum by default. */
206 #define streq(s,t) (assert ((s)!=NULL || (t)!=NULL), !strcmp (s, t))
207 #define strcaseeq(s,t) (assert ((s)!=NULL && (t)!=NULL), !etags_strcasecmp (s, t))
208 #define strneq(s,t,n) (assert ((s)!=NULL || (t)!=NULL), !strncmp (s, t, n))
209 #define strncaseeq(s,t,n) (assert ((s)!=NULL && (t)!=NULL), !etags_strncasecmp (s, t, n))
211 #define CHARS 256 /* 2^sizeof(char) */
212 #define CHAR(x) ((unsigned int)(x) & (CHARS - 1))
213 #define iswhite(c) (_wht[CHAR (c)]) /* c is white (see white) */
214 #define notinname(c) (_nin[CHAR (c)]) /* c is not in a name (see nonam) */
215 #define begtoken(c) (_btk[CHAR (c)]) /* c can start token (see begtk) */
216 #define intoken(c) (_itk[CHAR (c)]) /* c can be in token (see midtk) */
217 #define endtoken(c) (_etk[CHAR (c)]) /* c ends tokens (see endtk) */
219 #define ISALNUM(c) isalnum (CHAR (c))
220 #define ISALPHA(c) isalpha (CHAR (c))
221 #define ISDIGIT(c) isdigit (CHAR (c))
222 #define ISLOWER(c) islower (CHAR (c))
224 #define lowcase(c) tolower (CHAR (c))
228 * xnew, xrnew -- allocate, reallocate storage
230 * SYNOPSIS: Type *xnew (int n, Type);
231 * void xrnew (OldPointer, int n, Type);
234 # include "chkmalloc.h"
235 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
236 (n) * sizeof (Type)))
237 # define xrnew(op,n,Type) ((op) = (Type *) trace_realloc (__FILE__, __LINE__, \
238 (char *) (op), (n) * sizeof (Type)))
240 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
241 # define xrnew(op,n,Type) ((op) = (Type *) xrealloc ( \
242 (char *) (op), (n) * sizeof (Type)))
247 typedef void Lang_function (FILE *);
251 const char *suffix
; /* file name suffix for this compressor */
252 const char *command
; /* takes one arg and decompresses to stdout */
257 const char *name
; /* language name */
258 const char *help
; /* detailed help for the language */
259 Lang_function
*function
; /* parse function */
260 const char **suffixes
; /* name suffixes of this language's files */
261 const char **filenames
; /* names of this language's files */
262 const char **interpreters
; /* interpreters for this language */
263 bool metasource
; /* source used to generate other sources */
268 struct fdesc
*next
; /* for the linked list */
269 char *infname
; /* uncompressed input file name */
270 char *infabsname
; /* absolute uncompressed input file name */
271 char *infabsdir
; /* absolute dir of input file */
272 char *taggedfname
; /* file name to write in tagfile */
273 language
*lang
; /* language of file */
274 char *prop
; /* file properties to write in tagfile */
275 bool usecharno
; /* etags tags shall contain char number */
276 bool written
; /* entry written in the tags file */
279 typedef struct node_st
280 { /* sorting structure */
281 struct node_st
*left
, *right
; /* left and right sons */
282 fdesc
*fdp
; /* description of file to whom tag belongs */
283 char *name
; /* tag name */
284 char *regex
; /* search regexp */
285 bool valid
; /* write this tag on the tag file */
286 bool is_func
; /* function tag: use regexp in CTAGS mode */
287 bool been_warned
; /* warning already given for duplicated tag */
288 int lno
; /* line number tag is on */
289 long cno
; /* character number line starts on */
293 * A `linebuffer' is a structure which holds a line of text.
294 * `readline_internal' reads a line from a stream into a linebuffer
295 * and works regardless of the length of the line.
296 * SIZE is the size of BUFFER, LEN is the length of the string in
297 * BUFFER after readline reads it.
306 /* Used to support mixing of --lang and file names. */
310 at_language
, /* a language specification */
311 at_regexp
, /* a regular expression */
312 at_filename
, /* a file name */
313 at_stdin
, /* read from stdin here */
314 at_end
/* stop parsing the list */
315 } arg_type
; /* argument type */
316 language
*lang
; /* language associated with the argument */
317 char *what
; /* the argument itself */
320 /* Structure defining a regular expression. */
321 typedef struct regexp
323 struct regexp
*p_next
; /* pointer to next in list */
324 language
*lang
; /* if set, use only for this language */
325 char *pattern
; /* the regexp pattern */
326 char *name
; /* tag name */
327 struct re_pattern_buffer
*pat
; /* the compiled pattern */
328 struct re_registers regs
; /* re registers */
329 bool error_signaled
; /* already signaled for this regexp */
330 bool force_explicit_name
; /* do not allow implicit tag name */
331 bool ignore_case
; /* ignore case when matching */
332 bool multi_line
; /* do a multi-line match on the whole file */
336 /* Many compilers barf on this:
337 Lang_function Ada_funcs;
338 so let's write it this way */
339 static void Ada_funcs (FILE *);
340 static void Asm_labels (FILE *);
341 static void C_entries (int c_ext
, FILE *);
342 static void default_C_entries (FILE *);
343 static void plain_C_entries (FILE *);
344 static void Cjava_entries (FILE *);
345 static void Cobol_paragraphs (FILE *);
346 static void Cplusplus_entries (FILE *);
347 static void Cstar_entries (FILE *);
348 static void Erlang_functions (FILE *);
349 static void Forth_words (FILE *);
350 static void Fortran_functions (FILE *);
351 static void HTML_labels (FILE *);
352 static void Lisp_functions (FILE *);
353 static void Lua_functions (FILE *);
354 static void Makefile_targets (FILE *);
355 static void Pascal_functions (FILE *);
356 static void Perl_functions (FILE *);
357 static void PHP_functions (FILE *);
358 static void PS_functions (FILE *);
359 static void Prolog_functions (FILE *);
360 static void Python_functions (FILE *);
361 static void Scheme_functions (FILE *);
362 static void TeX_commands (FILE *);
363 static void Texinfo_nodes (FILE *);
364 static void Yacc_entries (FILE *);
365 static void just_read_file (FILE *);
367 static void print_language_names (void);
368 static void print_version (void);
369 static void print_help (argument
*);
370 int main (int, char **);
372 static compressor
*get_compressor_from_suffix (char *, char **);
373 static language
*get_language_from_langname (const char *);
374 static language
*get_language_from_interpreter (char *);
375 static language
*get_language_from_filename (char *, bool);
376 static void readline (linebuffer
*, FILE *);
377 static long readline_internal (linebuffer
*, FILE *);
378 static bool nocase_tail (const char *);
379 static void get_tag (char *, char **);
381 static void analyse_regex (char *);
382 static void free_regexps (void);
383 static void regex_tag_multiline (void);
384 static void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
385 static void suggest_asking_for_help (void) NO_RETURN
;
386 void fatal (const char *, const char *) NO_RETURN
;
387 static void pfatal (const char *) NO_RETURN
;
388 static void add_node (node
*, node
**);
390 static void init (void);
391 static void process_file_name (char *, language
*);
392 static void process_file (FILE *, char *, language
*);
393 static void find_entries (FILE *);
394 static void free_tree (node
*);
395 static void free_fdesc (fdesc
*);
396 static void pfnote (char *, bool, char *, int, int, long);
397 static void make_tag (const char *, int, bool, char *, int, int, long);
398 static void invalidate_nodes (fdesc
*, node
**);
399 static void put_entries (node
*);
401 static char *concat (const char *, const char *, const char *);
402 static char *skip_spaces (char *);
403 static char *skip_non_spaces (char *);
404 static char *savenstr (const char *, int);
405 static char *savestr (const char *);
406 static char *etags_strchr (const char *, int);
407 static char *etags_strrchr (const char *, int);
408 static int etags_strcasecmp (const char *, const char *);
409 static int etags_strncasecmp (const char *, const char *, int);
410 static char *etags_getcwd (void);
411 static char *relative_filename (char *, char *);
412 static char *absolute_filename (char *, char *);
413 static char *absolute_dirname (char *, char *);
414 static bool filename_is_absolute (char *f
);
415 static void canonicalize_filename (char *);
416 static void linebuffer_init (linebuffer
*);
417 static void linebuffer_setlen (linebuffer
*, int);
418 static PTR
xmalloc (size_t);
419 static PTR
xrealloc (char *, size_t);
422 static char searchar
= '/'; /* use /.../ searches */
424 static char *tagfile
; /* output file */
425 static char *progname
; /* name this program was invoked with */
426 static char *cwd
; /* current working directory */
427 static char *tagfiledir
; /* directory of tagfile */
428 static FILE *tagf
; /* ioptr for tags file */
429 static ptrdiff_t whatlen_max
; /* maximum length of any 'what' member */
431 static fdesc
*fdhead
; /* head of file description list */
432 static fdesc
*curfdp
; /* current file description */
433 static int lineno
; /* line number of current line */
434 static long charno
; /* current character number */
435 static long linecharno
; /* charno of start of current line */
436 static char *dbp
; /* pointer to start of current tag */
438 static const int invalidcharno
= -1;
440 static node
*nodehead
; /* the head of the binary tree of tags */
441 static node
*last_node
; /* the last node created */
443 static linebuffer lb
; /* the current line */
444 static linebuffer filebuf
; /* a buffer containing the whole file */
445 static linebuffer token_name
; /* a buffer containing a tag name */
447 /* boolean "functions" (see init) */
448 static bool _wht
[CHARS
], _nin
[CHARS
], _itk
[CHARS
], _btk
[CHARS
], _etk
[CHARS
];
451 *white
= " \f\t\n\r\v",
453 *nonam
= " \f\t\n\r()=,;", /* look at make_tag before modifying! */
454 /* token ending chars */
455 *endtk
= " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?",
456 /* token starting chars */
457 *begtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
458 /* valid in-token chars */
459 *midtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
461 static bool append_to_tagfile
; /* -a: append to tags */
462 /* The next five default to TRUE in C and derived languages. */
463 static bool typedefs
; /* -t: create tags for C and Ada typedefs */
464 static bool typedefs_or_cplusplus
; /* -T: create tags for C typedefs, level */
465 /* 0 struct/enum/union decls, and C++ */
466 /* member functions. */
467 static bool constantypedefs
; /* -d: create tags for C #define, enum */
468 /* constants and variables. */
469 /* -D: opposite of -d. Default under ctags. */
470 static bool globals
; /* create tags for global variables */
471 static bool members
; /* create tags for C member variables */
472 static bool declarations
; /* --declarations: tag them and extern in C&Co*/
473 static bool no_line_directive
; /* ignore #line directives (undocumented) */
474 static bool no_duplicates
; /* no duplicate tags for ctags (undocumented) */
475 static bool update
; /* -u: update tags */
476 static bool vgrind_style
; /* -v: create vgrind style index output */
477 static bool no_warnings
; /* -w: suppress warnings (undocumented) */
478 static bool cxref_style
; /* -x: create cxref style output */
479 static bool cplusplus
; /* .[hc] means C++, not C (undocumented) */
480 static bool ignoreindent
; /* -I: ignore indentation in C */
481 static bool packages_only
; /* --packages-only: in Ada, only tag packages*/
483 /* STDIN is defined in LynxOS system headers */
488 #define STDIN 0x1001 /* returned by getopt_long on --parse-stdin */
489 static bool parsing_stdin
; /* --parse-stdin used */
491 static regexp
*p_head
; /* list of all regexps */
492 static bool need_filebuf
; /* some regexes are multi-line */
494 static struct option longopts
[] =
496 { "append", no_argument
, NULL
, 'a' },
497 { "packages-only", no_argument
, &packages_only
, TRUE
},
498 { "c++", no_argument
, NULL
, 'C' },
499 { "declarations", no_argument
, &declarations
, TRUE
},
500 { "no-line-directive", no_argument
, &no_line_directive
, TRUE
},
501 { "no-duplicates", no_argument
, &no_duplicates
, TRUE
},
502 { "help", no_argument
, NULL
, 'h' },
503 { "help", no_argument
, NULL
, 'H' },
504 { "ignore-indentation", no_argument
, NULL
, 'I' },
505 { "language", required_argument
, NULL
, 'l' },
506 { "members", no_argument
, &members
, TRUE
},
507 { "no-members", no_argument
, &members
, FALSE
},
508 { "output", required_argument
, NULL
, 'o' },
509 { "regex", required_argument
, NULL
, 'r' },
510 { "no-regex", no_argument
, NULL
, 'R' },
511 { "ignore-case-regex", required_argument
, NULL
, 'c' },
512 { "parse-stdin", required_argument
, NULL
, STDIN
},
513 { "version", no_argument
, NULL
, 'V' },
515 #if CTAGS /* Ctags options */
516 { "backward-search", no_argument
, NULL
, 'B' },
517 { "cxref", no_argument
, NULL
, 'x' },
518 { "defines", no_argument
, NULL
, 'd' },
519 { "globals", no_argument
, &globals
, TRUE
},
520 { "typedefs", no_argument
, NULL
, 't' },
521 { "typedefs-and-c++", no_argument
, NULL
, 'T' },
522 { "update", no_argument
, NULL
, 'u' },
523 { "vgrind", no_argument
, NULL
, 'v' },
524 { "no-warn", no_argument
, NULL
, 'w' },
526 #else /* Etags options */
527 { "no-defines", no_argument
, NULL
, 'D' },
528 { "no-globals", no_argument
, &globals
, FALSE
},
529 { "include", required_argument
, NULL
, 'i' },
534 static compressor compressors
[] =
536 { "z", "gzip -d -c"},
537 { "Z", "gzip -d -c"},
538 { "gz", "gzip -d -c"},
539 { "GZ", "gzip -d -c"},
540 { "bz2", "bzip2 -d -c" },
541 { "xz", "xz -d -c" },
550 static const char *Ada_suffixes
[] =
551 { "ads", "adb", "ada", NULL
};
552 static const char Ada_help
[] =
553 "In Ada code, functions, procedures, packages, tasks and types are\n\
554 tags. Use the `--packages-only' option to create tags for\n\
556 Ada tag names have suffixes indicating the type of entity:\n\
557 Entity type: Qualifier:\n\
558 ------------ ----------\n\
565 Thus, `M-x find-tag <RET> bidule/b <RET>' will go directly to the\n\
566 body of the package `bidule', while `M-x find-tag <RET> bidule <RET>'\n\
567 will just search for any tag `bidule'.";
570 static const char *Asm_suffixes
[] =
571 { "a", /* Unix assembler */
572 "asm", /* Microcontroller assembly */
573 "def", /* BSO/Tasking definition includes */
574 "inc", /* Microcontroller include files */
575 "ins", /* Microcontroller include files */
576 "s", "sa", /* Unix assembler */
577 "S", /* cpp-processed Unix assembler */
578 "src", /* BSO/Tasking C compiler output */
581 static const char Asm_help
[] =
582 "In assembler code, labels appearing at the beginning of a line,\n\
583 followed by a colon, are tags.";
586 /* Note that .c and .h can be considered C++, if the --c++ flag was
587 given, or if the `class' or `template' keywords are met inside the file.
588 That is why default_C_entries is called for these. */
589 static const char *default_C_suffixes
[] =
591 #if CTAGS /* C help for Ctags */
592 static const char default_C_help
[] =
593 "In C code, any C function is a tag. Use -t to tag typedefs.\n\
594 Use -T to tag definitions of `struct', `union' and `enum'.\n\
595 Use -d to tag `#define' macro definitions and `enum' constants.\n\
596 Use --globals to tag global variables.\n\
597 You can tag function declarations and external variables by\n\
598 using `--declarations', and struct members by using `--members'.";
599 #else /* C help for Etags */
600 static const char default_C_help
[] =
601 "In C code, any C function or typedef is a tag, and so are\n\
602 definitions of `struct', `union' and `enum'. `#define' macro\n\
603 definitions and `enum' constants are tags unless you specify\n\
604 `--no-defines'. Global variables are tags unless you specify\n\
605 `--no-globals' and so are struct members unless you specify\n\
606 `--no-members'. Use of `--no-globals', `--no-defines' and\n\
607 `--no-members' can make the tags table file much smaller.\n\
608 You can tag function declarations and external variables by\n\
609 using `--declarations'.";
610 #endif /* C help for Ctags and Etags */
612 static const char *Cplusplus_suffixes
[] =
613 { "C", "c++", "cc", "cpp", "cxx", "H", "h++", "hh", "hpp", "hxx",
614 "M", /* Objective C++ */
615 "pdb", /* PostScript with C syntax */
617 static const char Cplusplus_help
[] =
618 "In C++ code, all the tag constructs of C code are tagged. (Use\n\
619 --help --lang=c --lang=c++ for full help.)\n\
620 In addition to C tags, member functions are also recognized. Member\n\
621 variables are recognized unless you use the `--no-members' option.\n\
622 Tags for variables and functions in classes are named `CLASS::VARIABLE'\n\
623 and `CLASS::FUNCTION'. `operator' definitions have tag names like\n\
626 static const char *Cjava_suffixes
[] =
628 static char Cjava_help
[] =
629 "In Java code, all the tags constructs of C and C++ code are\n\
630 tagged. (Use --help --lang=c --lang=c++ --lang=java for full help.)";
633 static const char *Cobol_suffixes
[] =
634 { "COB", "cob", NULL
};
635 static char Cobol_help
[] =
636 "In Cobol code, tags are paragraph names; that is, any word\n\
637 starting in column 8 and followed by a period.";
639 static const char *Cstar_suffixes
[] =
640 { "cs", "hs", NULL
};
642 static const char *Erlang_suffixes
[] =
643 { "erl", "hrl", NULL
};
644 static const char Erlang_help
[] =
645 "In Erlang code, the tags are the functions, records and macros\n\
646 defined in the file.";
648 const char *Forth_suffixes
[] =
649 { "fth", "tok", NULL
};
650 static const char Forth_help
[] =
651 "In Forth code, tags are words defined by `:',\n\
652 constant, code, create, defer, value, variable, buffer:, field.";
654 static const char *Fortran_suffixes
[] =
655 { "F", "f", "f90", "for", NULL
};
656 static const char Fortran_help
[] =
657 "In Fortran code, functions, subroutines and block data are tags.";
659 static const char *HTML_suffixes
[] =
660 { "htm", "html", "shtml", NULL
};
661 static const char HTML_help
[] =
662 "In HTML input files, the tags are the `title' and the `h1', `h2',\n\
663 `h3' headers. Also, tags are `name=' in anchors and all\n\
664 occurrences of `id='.";
666 static const char *Lisp_suffixes
[] =
667 { "cl", "clisp", "el", "l", "lisp", "LSP", "lsp", "ml", NULL
};
668 static const char Lisp_help
[] =
669 "In Lisp code, any function defined with `defun', any variable\n\
670 defined with `defvar' or `defconst', and in general the first\n\
671 argument of any expression that starts with `(def' in column zero\n\
674 static const char *Lua_suffixes
[] =
675 { "lua", "LUA", NULL
};
676 static const char Lua_help
[] =
677 "In Lua scripts, all functions are tags.";
679 static const char *Makefile_filenames
[] =
680 { "Makefile", "makefile", "GNUMakefile", "Makefile.in", "Makefile.am", NULL
};
681 static const char Makefile_help
[] =
682 "In makefiles, targets are tags; additionally, variables are tags\n\
683 unless you specify `--no-globals'.";
685 static const char *Objc_suffixes
[] =
686 { "lm", /* Objective lex file */
687 "m", /* Objective C file */
689 static const char Objc_help
[] =
690 "In Objective C code, tags include Objective C definitions for classes,\n\
691 class categories, methods and protocols. Tags for variables and\n\
692 functions in classes are named `CLASS::VARIABLE' and `CLASS::FUNCTION'.\n\
693 (Use --help --lang=c --lang=objc --lang=java for full help.)";
695 static const char *Pascal_suffixes
[] =
696 { "p", "pas", NULL
};
697 static const char Pascal_help
[] =
698 "In Pascal code, the tags are the functions and procedures defined\n\
700 /* " // this is for working around an Emacs highlighting bug... */
702 static const char *Perl_suffixes
[] =
703 { "pl", "pm", NULL
};
704 static const char *Perl_interpreters
[] =
705 { "perl", "@PERL@", NULL
};
706 static const char Perl_help
[] =
707 "In Perl code, the tags are the packages, subroutines and variables\n\
708 defined by the `package', `sub', `my' and `local' keywords. Use\n\
709 `--globals' if you want to tag global variables. Tags for\n\
710 subroutines are named `PACKAGE::SUB'. The name for subroutines\n\
711 defined in the default package is `main::SUB'.";
713 static const char *PHP_suffixes
[] =
714 { "php", "php3", "php4", NULL
};
715 static const char PHP_help
[] =
716 "In PHP code, tags are functions, classes and defines. Unless you use\n\
717 the `--no-members' option, vars are tags too.";
719 static const char *plain_C_suffixes
[] =
720 { "pc", /* Pro*C file */
723 static const char *PS_suffixes
[] =
724 { "ps", "psw", NULL
}; /* .psw is for PSWrap */
725 static const char PS_help
[] =
726 "In PostScript code, the tags are the functions.";
728 static const char *Prolog_suffixes
[] =
730 static const char Prolog_help
[] =
731 "In Prolog code, tags are predicates and rules at the beginning of\n\
734 static const char *Python_suffixes
[] =
736 static const char Python_help
[] =
737 "In Python code, `def' or `class' at the beginning of a line\n\
740 /* Can't do the `SCM' or `scm' prefix with a version number. */
741 static const char *Scheme_suffixes
[] =
742 { "oak", "sch", "scheme", "SCM", "scm", "SM", "sm", "ss", "t", NULL
};
743 static const char Scheme_help
[] =
744 "In Scheme code, tags include anything defined with `def' or with a\n\
745 construct whose name starts with `def'. They also include\n\
746 variables set with `set!' at top level in the file.";
748 static const char *TeX_suffixes
[] =
749 { "bib", "clo", "cls", "ltx", "sty", "TeX", "tex", NULL
};
750 static const char TeX_help
[] =
751 "In LaTeX text, the argument of any of the commands `\\chapter',\n\
752 `\\section', `\\subsection', `\\subsubsection', `\\eqno', `\\label',\n\
753 `\\ref', `\\cite', `\\bibitem', `\\part', `\\appendix', `\\entry',\n\
754 `\\index', `\\def', `\\newcommand', `\\renewcommand',\n\
755 `\\newenvironment' or `\\renewenvironment' is a tag.\n\
757 Other commands can be specified by setting the environment variable\n\
758 `TEXTAGS' to a colon-separated list like, for example,\n\
759 TEXTAGS=\"mycommand:myothercommand\".";
762 static const char *Texinfo_suffixes
[] =
763 { "texi", "texinfo", "txi", NULL
};
764 static const char Texinfo_help
[] =
765 "for texinfo files, lines starting with @node are tagged.";
767 static const char *Yacc_suffixes
[] =
768 { "y", "y++", "ym", "yxx", "yy", NULL
}; /* .ym is Objective yacc file */
769 static const char Yacc_help
[] =
770 "In Bison or Yacc input files, each rule defines as a tag the\n\
771 nonterminal it constructs. The portions of the file that contain\n\
772 C code are parsed as C code (use --help --lang=c --lang=yacc\n\
775 static const char auto_help
[] =
776 "`auto' is not a real language, it indicates to use\n\
777 a default language for files base on file name suffix and file contents.";
779 static const char none_help
[] =
780 "`none' is not a real language, it indicates to only do\n\
781 regexp processing on files.";
783 static const char no_lang_help
[] =
784 "No detailed help available for this language.";
788 * Table of languages.
790 * It is ok for a given function to be listed under more than one
791 * name. I just didn't.
794 static language lang_names
[] =
796 { "ada", Ada_help
, Ada_funcs
, Ada_suffixes
},
797 { "asm", Asm_help
, Asm_labels
, Asm_suffixes
},
798 { "c", default_C_help
, default_C_entries
, default_C_suffixes
},
799 { "c++", Cplusplus_help
, Cplusplus_entries
, Cplusplus_suffixes
},
800 { "c*", no_lang_help
, Cstar_entries
, Cstar_suffixes
},
801 { "cobol", Cobol_help
, Cobol_paragraphs
, Cobol_suffixes
},
802 { "erlang", Erlang_help
, Erlang_functions
, Erlang_suffixes
},
803 { "forth", Forth_help
, Forth_words
, Forth_suffixes
},
804 { "fortran", Fortran_help
, Fortran_functions
, Fortran_suffixes
},
805 { "html", HTML_help
, HTML_labels
, HTML_suffixes
},
806 { "java", Cjava_help
, Cjava_entries
, Cjava_suffixes
},
807 { "lisp", Lisp_help
, Lisp_functions
, Lisp_suffixes
},
808 { "lua", Lua_help
, Lua_functions
, Lua_suffixes
},
809 { "makefile", Makefile_help
,Makefile_targets
,NULL
,Makefile_filenames
},
810 { "objc", Objc_help
, plain_C_entries
, Objc_suffixes
},
811 { "pascal", Pascal_help
, Pascal_functions
, Pascal_suffixes
},
812 { "perl",Perl_help
,Perl_functions
,Perl_suffixes
,NULL
,Perl_interpreters
},
813 { "php", PHP_help
, PHP_functions
, PHP_suffixes
},
814 { "postscript",PS_help
, PS_functions
, PS_suffixes
},
815 { "proc", no_lang_help
, plain_C_entries
, plain_C_suffixes
},
816 { "prolog", Prolog_help
, Prolog_functions
, Prolog_suffixes
},
817 { "python", Python_help
, Python_functions
, Python_suffixes
},
818 { "scheme", Scheme_help
, Scheme_functions
, Scheme_suffixes
},
819 { "tex", TeX_help
, TeX_commands
, TeX_suffixes
},
820 { "texinfo", Texinfo_help
, Texinfo_nodes
, Texinfo_suffixes
},
821 { "yacc", Yacc_help
,Yacc_entries
,Yacc_suffixes
,NULL
,NULL
,TRUE
},
822 { "auto", auto_help
}, /* default guessing scheme */
823 { "none", none_help
, just_read_file
}, /* regexp matching only */
824 { NULL
} /* end of list */
829 print_language_names (void)
832 const char **name
, **ext
;
834 puts ("\nThese are the currently supported languages, along with the\n\
835 default file names and dot suffixes:");
836 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
838 printf (" %-*s", 10, lang
->name
);
839 if (lang
->filenames
!= NULL
)
840 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
841 printf (" %s", *name
);
842 if (lang
->suffixes
!= NULL
)
843 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
844 printf (" .%s", *ext
);
847 puts ("where `auto' means use default language for files based on file\n\
848 name suffix, and `none' means only do regexp processing on files.\n\
849 If no language is specified and no matching suffix is found,\n\
850 the first line of the file is read for a sharp-bang (#!) sequence\n\
851 followed by the name of an interpreter. If no such sequence is found,\n\
852 Fortran is tried first; if no tags are found, C is tried next.\n\
853 When parsing any C file, a \"class\" or \"template\" keyword\n\
855 puts ("Compressed files are supported using gzip, bzip2, and xz.\n\
857 For detailed help on a given language use, for example,\n\
858 etags --help --lang=ada.");
862 # define EMACS_NAME "standalone"
865 # define VERSION "17.38.1.4"
870 /* Makes it easier to update automatically. */
871 char emacs_copyright
[] = "Copyright (C) 2012 Free Software Foundation, Inc.";
873 printf ("%s (%s %s)\n", (CTAGS
) ? "ctags" : "etags", EMACS_NAME
, VERSION
);
874 puts (emacs_copyright
);
875 puts ("This program is distributed under the terms in ETAGS.README");
880 #ifndef PRINT_UNDOCUMENTED_OPTIONS_HELP
881 # define PRINT_UNDOCUMENTED_OPTIONS_HELP FALSE
885 print_help (argument
*argbuffer
)
887 bool help_for_lang
= FALSE
;
889 for (; argbuffer
->arg_type
!= at_end
; argbuffer
++)
890 if (argbuffer
->arg_type
== at_language
)
894 puts (argbuffer
->lang
->help
);
895 help_for_lang
= TRUE
;
901 printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\
903 These are the options accepted by %s.\n", progname
, progname
);
905 puts ("WARNING: long option names do not work with this executable,\n\
906 as it is not linked with GNU getopt.");
908 puts ("You may use unambiguous abbreviations for the long option names.");
909 puts (" A - as file name means read names from stdin (one per line).\n\
910 Absolute names are stored in the output file as they are.\n\
911 Relative ones are stored relative to the output file's directory.\n");
913 puts ("-a, --append\n\
914 Append tag entries to existing tags file.");
916 puts ("--packages-only\n\
917 For Ada files, only generate tags for packages.");
920 puts ("-B, --backward-search\n\
921 Write the search commands for the tag entries using '?', the\n\
922 backward-search command instead of '/', the forward-search command.");
924 /* This option is mostly obsolete, because etags can now automatically
925 detect C++. Retained for backward compatibility and for debugging and
926 experimentation. In principle, we could want to tag as C++ even
927 before any "class" or "template" keyword.
929 Treat files whose name suffix defaults to C language as C++ files.");
932 puts ("--declarations\n\
933 In C and derived languages, create tags for function declarations,");
935 puts ("\tand create tags for extern variables if --globals is used.");
938 ("\tand create tags for extern variables unless --no-globals is used.");
941 puts ("-d, --defines\n\
942 Create tag entries for C #define constants and enum constants, too.");
944 puts ("-D, --no-defines\n\
945 Don't create tag entries for C #define constants and enum constants.\n\
946 This makes the tags file smaller.");
949 puts ("-i FILE, --include=FILE\n\
950 Include a note in tag file indicating that, when searching for\n\
951 a tag, one should also consult the tags file FILE after\n\
952 checking the current file.");
954 puts ("-l LANG, --language=LANG\n\
955 Force the following files to be considered as written in the\n\
956 named language up to the next --language=LANG option.");
960 Create tag entries for global variables in some languages.");
962 puts ("--no-globals\n\
963 Do not create tag entries for global variables in some\n\
964 languages. This makes the tags file smaller.");
966 if (PRINT_UNDOCUMENTED_OPTIONS_HELP
)
967 puts ("--no-line-directive\n\
968 Ignore #line preprocessor directives in C and derived languages.");
972 Create tag entries for members of structures in some languages.");
974 puts ("--no-members\n\
975 Do not create tag entries for members of structures\n\
976 in some languages.");
978 puts ("-r REGEXP, --regex=REGEXP or --regex=@regexfile\n\
979 Make a tag for each line matching a regular expression pattern\n\
980 in the following files. {LANGUAGE}REGEXP uses REGEXP for LANGUAGE\n\
981 files only. REGEXFILE is a file containing one REGEXP per line.\n\
982 REGEXP takes the form /TAGREGEXP/TAGNAME/MODS, where TAGNAME/ is\n\
983 optional. The TAGREGEXP pattern is anchored (as if preceded by ^).");
984 puts (" If TAGNAME/ is present, the tags created are named.\n\
985 For example Tcl named tags can be created with:\n\
986 --regex=\"/proc[ \\t]+\\([^ \\t]+\\)/\\1/.\".\n\
987 MODS are optional one-letter modifiers: `i' means to ignore case,\n\
988 `m' means to allow multi-line matches, `s' implies `m' and\n\
989 causes dot to match any character, including newline.");
991 puts ("-R, --no-regex\n\
992 Don't create tags from regexps for the following files.");
994 puts ("-I, --ignore-indentation\n\
995 In C and C++ do not assume that a closing brace in the first\n\
996 column is the final brace of a function or structure definition.");
998 puts ("-o FILE, --output=FILE\n\
999 Write the tags to FILE.");
1001 puts ("--parse-stdin=NAME\n\
1002 Read from standard input and record tags as belonging to file NAME.");
1006 puts ("-t, --typedefs\n\
1007 Generate tag entries for C and Ada typedefs.");
1008 puts ("-T, --typedefs-and-c++\n\
1009 Generate tag entries for C typedefs, C struct/enum/union tags,\n\
1010 and C++ member functions.");
1014 puts ("-u, --update\n\
1015 Update the tag entries for the given files, leaving tag\n\
1016 entries for other files in place. Currently, this is\n\
1017 implemented by deleting the existing entries for the given\n\
1018 files and then rewriting the new entries at the end of the\n\
1019 tags file. It is often faster to simply rebuild the entire\n\
1020 tag file than to use this.");
1024 puts ("-v, --vgrind\n\
1025 Print on the standard output an index of items intended for\n\
1026 human consumption, similar to the output of vgrind. The index\n\
1027 is sorted, and gives the page number of each item.");
1029 if (PRINT_UNDOCUMENTED_OPTIONS_HELP
)
1030 puts ("-w, --no-duplicates\n\
1031 Do not create duplicate tag entries, for compatibility with\n\
1032 traditional ctags.");
1034 if (PRINT_UNDOCUMENTED_OPTIONS_HELP
)
1035 puts ("-w, --no-warn\n\
1036 Suppress warning messages about duplicate tag entries.");
1038 puts ("-x, --cxref\n\
1039 Like --vgrind, but in the style of cxref, rather than vgrind.\n\
1040 The output uses line numbers instead of page numbers, but\n\
1041 beyond that the differences are cosmetic; try both to see\n\
1045 puts ("-V, --version\n\
1046 Print the version of the program.\n\
1048 Print this help message.\n\
1049 Followed by one or more `--language' options prints detailed\n\
1050 help about tag generation for the specified languages.");
1052 print_language_names ();
1055 puts ("Report bugs to bug-gnu-emacs@gnu.org");
1057 exit (EXIT_SUCCESS
);
1062 main (int argc
, char **argv
)
1065 unsigned int nincluded_files
;
1066 char **included_files
;
1067 argument
*argbuffer
;
1068 int current_arg
, file_count
;
1069 linebuffer filename_lb
;
1070 bool help_asked
= FALSE
;
1077 _fmode
= O_BINARY
; /* all of files are treated as binary files */
1081 nincluded_files
= 0;
1082 included_files
= xnew (argc
, char *);
1086 /* Allocate enough no matter what happens. Overkill, but each one
1088 argbuffer
= xnew (argc
, argument
);
1091 * Always find typedefs and structure tags.
1092 * Also default to find macro constants, enum constants, struct
1093 * members and global variables. Do it for both etags and ctags.
1095 typedefs
= typedefs_or_cplusplus
= constantypedefs
= TRUE
;
1096 globals
= members
= TRUE
;
1098 /* When the optstring begins with a '-' getopt_long does not rearrange the
1099 non-options arguments to be at the end, but leaves them alone. */
1100 optstring
= concat (NO_LONG_OPTIONS
? "" : "-",
1101 "ac:Cf:Il:o:r:RSVhH",
1102 (CTAGS
) ? "BxdtTuvw" : "Di:");
1104 while ((opt
= getopt_long (argc
, argv
, optstring
, longopts
, NULL
)) != EOF
)
1108 /* If getopt returns 0, then it has already processed a
1109 long-named option. We should do nothing. */
1113 /* This means that a file name has been seen. Record it. */
1114 argbuffer
[current_arg
].arg_type
= at_filename
;
1115 argbuffer
[current_arg
].what
= optarg
;
1116 len
= strlen (optarg
);
1117 if (whatlen_max
< len
)
1124 /* Parse standard input. Idea by Vivek <vivek@etla.org>. */
1125 argbuffer
[current_arg
].arg_type
= at_stdin
;
1126 argbuffer
[current_arg
].what
= optarg
;
1127 len
= strlen (optarg
);
1128 if (whatlen_max
< len
)
1133 fatal ("cannot parse standard input more than once", (char *)NULL
);
1134 parsing_stdin
= TRUE
;
1137 /* Common options. */
1138 case 'a': append_to_tagfile
= TRUE
; break;
1139 case 'C': cplusplus
= TRUE
; break;
1140 case 'f': /* for compatibility with old makefiles */
1144 error ("-o option may only be given once.");
1145 suggest_asking_for_help ();
1151 case 'S': /* for backward compatibility */
1152 ignoreindent
= TRUE
;
1156 language
*lang
= get_language_from_langname (optarg
);
1159 argbuffer
[current_arg
].lang
= lang
;
1160 argbuffer
[current_arg
].arg_type
= at_language
;
1166 /* Backward compatibility: support obsolete --ignore-case-regexp. */
1167 optarg
= concat (optarg
, "i", ""); /* memory leak here */
1170 argbuffer
[current_arg
].arg_type
= at_regexp
;
1171 argbuffer
[current_arg
].what
= optarg
;
1172 len
= strlen (optarg
);
1173 if (whatlen_max
< len
)
1178 argbuffer
[current_arg
].arg_type
= at_regexp
;
1179 argbuffer
[current_arg
].what
= NULL
;
1191 case 'D': constantypedefs
= FALSE
; break;
1192 case 'i': included_files
[nincluded_files
++] = optarg
; break;
1194 /* Ctags options. */
1195 case 'B': searchar
= '?'; break;
1196 case 'd': constantypedefs
= TRUE
; break;
1197 case 't': typedefs
= TRUE
; break;
1198 case 'T': typedefs
= typedefs_or_cplusplus
= TRUE
; break;
1199 case 'u': update
= TRUE
; break;
1200 case 'v': vgrind_style
= TRUE
; /*FALLTHRU*/
1201 case 'x': cxref_style
= TRUE
; break;
1202 case 'w': no_warnings
= TRUE
; break;
1204 suggest_asking_for_help ();
1208 /* No more options. Store the rest of arguments. */
1209 for (; optind
< argc
; optind
++)
1211 argbuffer
[current_arg
].arg_type
= at_filename
;
1212 argbuffer
[current_arg
].what
= argv
[optind
];
1213 len
= strlen (argv
[optind
]);
1214 if (whatlen_max
< len
)
1220 argbuffer
[current_arg
].arg_type
= at_end
;
1223 print_help (argbuffer
);
1226 if (nincluded_files
== 0 && file_count
== 0)
1228 error ("no input files specified.");
1229 suggest_asking_for_help ();
1233 if (tagfile
== NULL
)
1234 tagfile
= savestr (CTAGS
? "tags" : "TAGS");
1235 cwd
= etags_getcwd (); /* the current working directory */
1236 if (cwd
[strlen (cwd
) - 1] != '/')
1239 cwd
= concat (oldcwd
, "/", "");
1243 /* Compute base directory for relative file names. */
1244 if (streq (tagfile
, "-")
1245 || strneq (tagfile
, "/dev/", 5))
1246 tagfiledir
= cwd
; /* relative file names are relative to cwd */
1249 canonicalize_filename (tagfile
);
1250 tagfiledir
= absolute_dirname (tagfile
, cwd
);
1253 init (); /* set up boolean "functions" */
1255 linebuffer_init (&lb
);
1256 linebuffer_init (&filename_lb
);
1257 linebuffer_init (&filebuf
);
1258 linebuffer_init (&token_name
);
1262 if (streq (tagfile
, "-"))
1266 /* Switch redirected `stdout' to binary mode (setting `_fmode'
1267 doesn't take effect until after `stdout' is already open). */
1268 if (!isatty (fileno (stdout
)))
1269 setmode (fileno (stdout
), O_BINARY
);
1273 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1279 * Loop through files finding functions.
1281 for (i
= 0; i
< current_arg
; i
++)
1283 static language
*lang
; /* non-NULL if language is forced */
1286 switch (argbuffer
[i
].arg_type
)
1289 lang
= argbuffer
[i
].lang
;
1292 analyse_regex (argbuffer
[i
].what
);
1295 this_file
= argbuffer
[i
].what
;
1296 /* Input file named "-" means read file names from stdin
1297 (one per line) and use them. */
1298 if (streq (this_file
, "-"))
1301 fatal ("cannot parse standard input AND read file names from it",
1303 while (readline_internal (&filename_lb
, stdin
) > 0)
1304 process_file_name (filename_lb
.buffer
, lang
);
1307 process_file_name (this_file
, lang
);
1310 this_file
= argbuffer
[i
].what
;
1311 process_file (stdin
, this_file
, lang
);
1318 free (filebuf
.buffer
);
1319 free (token_name
.buffer
);
1321 if (!CTAGS
|| cxref_style
)
1323 /* Write the remaining tags to tagf (ETAGS) or stdout (CXREF). */
1324 put_entries (nodehead
);
1325 free_tree (nodehead
);
1331 /* Output file entries that have no tags. */
1332 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1334 fprintf (tagf
, "\f\n%s,0\n", fdp
->taggedfname
);
1336 while (nincluded_files
-- > 0)
1337 fprintf (tagf
, "\f\n%s,include\n", *included_files
++);
1339 if (fclose (tagf
) == EOF
)
1343 exit (EXIT_SUCCESS
);
1346 /* From here on, we are in (CTAGS && !cxref_style) */
1350 xmalloc (strlen (tagfile
) + whatlen_max
+
1351 sizeof "mv..OTAGS;fgrep -v '\t\t' OTAGS >;rm OTAGS");
1352 for (i
= 0; i
< current_arg
; ++i
)
1354 switch (argbuffer
[i
].arg_type
)
1360 continue; /* the for loop */
1362 strcpy (cmd
, "mv ");
1363 strcat (cmd
, tagfile
);
1364 strcat (cmd
, " OTAGS;fgrep -v '\t");
1365 strcat (cmd
, argbuffer
[i
].what
);
1366 strcat (cmd
, "\t' OTAGS >");
1367 strcat (cmd
, tagfile
);
1368 strcat (cmd
, ";rm OTAGS");
1369 if (system (cmd
) != EXIT_SUCCESS
)
1370 fatal ("failed to execute shell command", (char *)NULL
);
1373 append_to_tagfile
= TRUE
;
1376 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1379 put_entries (nodehead
); /* write all the tags (CTAGS) */
1380 free_tree (nodehead
);
1382 if (fclose (tagf
) == EOF
)
1386 if (append_to_tagfile
|| update
)
1388 char *cmd
= xmalloc (2 * strlen (tagfile
) + sizeof "sort -u -o..");
1389 /* Maybe these should be used:
1390 setenv ("LC_COLLATE", "C", 1);
1391 setenv ("LC_ALL", "C", 1); */
1392 strcpy (cmd
, "sort -u -o ");
1393 strcat (cmd
, tagfile
);
1395 strcat (cmd
, tagfile
);
1396 exit (system (cmd
));
1398 return EXIT_SUCCESS
;
1403 * Return a compressor given the file name. If EXTPTR is non-zero,
1404 * return a pointer into FILE where the compressor-specific
1405 * extension begins. If no compressor is found, NULL is returned
1406 * and EXTPTR is not significant.
1407 * Idea by Vladimir Alexiev <vladimir@cs.ualberta.ca> (1998)
1410 get_compressor_from_suffix (char *file
, char **extptr
)
1413 char *slash
, *suffix
;
1415 /* File has been processed by canonicalize_filename,
1416 so we don't need to consider backslashes on DOS_NT. */
1417 slash
= etags_strrchr (file
, '/');
1418 suffix
= etags_strrchr (file
, '.');
1419 if (suffix
== NULL
|| suffix
< slash
)
1424 /* Let those poor souls who live with DOS 8+3 file name limits get
1425 some solace by treating foo.cgz as if it were foo.c.gz, etc.
1426 Only the first do loop is run if not MSDOS */
1429 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1430 if (streq (compr
->suffix
, suffix
))
1433 break; /* do it only once: not really a loop */
1436 } while (*suffix
!= '\0');
1443 * Return a language given the name.
1446 get_language_from_langname (const char *name
)
1451 error ("empty language name");
1454 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1455 if (streq (name
, lang
->name
))
1457 error ("unknown language \"%s\"", name
);
1465 * Return a language given the interpreter name.
1468 get_language_from_interpreter (char *interpreter
)
1473 if (interpreter
== NULL
)
1475 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1476 if (lang
->interpreters
!= NULL
)
1477 for (iname
= lang
->interpreters
; *iname
!= NULL
; iname
++)
1478 if (streq (*iname
, interpreter
))
1487 * Return a language given the file name.
1490 get_language_from_filename (char *file
, int case_sensitive
)
1493 const char **name
, **ext
, *suffix
;
1495 /* Try whole file name first. */
1496 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1497 if (lang
->filenames
!= NULL
)
1498 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
1499 if ((case_sensitive
)
1500 ? streq (*name
, file
)
1501 : strcaseeq (*name
, file
))
1504 /* If not found, try suffix after last dot. */
1505 suffix
= etags_strrchr (file
, '.');
1509 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1510 if (lang
->suffixes
!= NULL
)
1511 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
1512 if ((case_sensitive
)
1513 ? streq (*ext
, suffix
)
1514 : strcaseeq (*ext
, suffix
))
1521 * This routine is called on each file argument.
1524 process_file_name (char *file
, language
*lang
)
1526 struct stat stat_buf
;
1530 char *compressed_name
, *uncompressed_name
;
1531 char *ext
, *real_name
;
1534 canonicalize_filename (file
);
1535 if (streq (file
, tagfile
) && !streq (tagfile
, "-"))
1537 error ("skipping inclusion of %s in self.", file
);
1540 if ((compr
= get_compressor_from_suffix (file
, &ext
)) == NULL
)
1542 compressed_name
= NULL
;
1543 real_name
= uncompressed_name
= savestr (file
);
1547 real_name
= compressed_name
= savestr (file
);
1548 uncompressed_name
= savenstr (file
, ext
- file
);
1551 /* If the canonicalized uncompressed name
1552 has already been dealt with, skip it silently. */
1553 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1555 assert (fdp
->infname
!= NULL
);
1556 if (streq (uncompressed_name
, fdp
->infname
))
1560 if (stat (real_name
, &stat_buf
) != 0)
1562 /* Reset real_name and try with a different name. */
1564 if (compressed_name
!= NULL
) /* try with the given suffix */
1566 if (stat (uncompressed_name
, &stat_buf
) == 0)
1567 real_name
= uncompressed_name
;
1569 else /* try all possible suffixes */
1571 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1573 compressed_name
= concat (file
, ".", compr
->suffix
);
1574 if (stat (compressed_name
, &stat_buf
) != 0)
1578 char *suf
= compressed_name
+ strlen (file
);
1579 size_t suflen
= strlen (compr
->suffix
) + 1;
1580 for ( ; suf
[1]; suf
++, suflen
--)
1582 memmove (suf
, suf
+ 1, suflen
);
1583 if (stat (compressed_name
, &stat_buf
) == 0)
1585 real_name
= compressed_name
;
1589 if (real_name
!= NULL
)
1592 free (compressed_name
);
1593 compressed_name
= NULL
;
1597 real_name
= compressed_name
;
1602 if (real_name
== NULL
)
1607 } /* try with a different name */
1609 if (!S_ISREG (stat_buf
.st_mode
))
1611 error ("skipping %s: it is not a regular file.", real_name
);
1614 if (real_name
== compressed_name
)
1616 char *cmd
= concat (compr
->command
, " ", real_name
);
1617 inf
= (FILE *) popen (cmd
, "r");
1621 inf
= fopen (real_name
, "r");
1628 process_file (inf
, uncompressed_name
, lang
);
1630 if (real_name
== compressed_name
)
1631 retval
= pclose (inf
);
1633 retval
= fclose (inf
);
1638 free (compressed_name
);
1639 free (uncompressed_name
);
1646 process_file (FILE *fh
, char *fn
, language
*lang
)
1648 static const fdesc emptyfdesc
;
1651 /* Create a new input file description entry. */
1652 fdp
= xnew (1, fdesc
);
1655 fdp
->infname
= savestr (fn
);
1657 fdp
->infabsname
= absolute_filename (fn
, cwd
);
1658 fdp
->infabsdir
= absolute_dirname (fn
, cwd
);
1659 if (filename_is_absolute (fn
))
1661 /* An absolute file name. Canonicalize it. */
1662 fdp
->taggedfname
= absolute_filename (fn
, NULL
);
1666 /* A file name relative to cwd. Make it relative
1667 to the directory of the tags file. */
1668 fdp
->taggedfname
= relative_filename (fn
, tagfiledir
);
1670 fdp
->usecharno
= TRUE
; /* use char position when making tags */
1672 fdp
->written
= FALSE
; /* not written on tags file yet */
1675 curfdp
= fdhead
; /* the current file description */
1679 /* If not Ctags, and if this is not metasource and if it contained no #line
1680 directives, we can write the tags and free all nodes pointing to
1683 && curfdp
->usecharno
/* no #line directives in this file */
1684 && !curfdp
->lang
->metasource
)
1688 /* Look for the head of the sublist relative to this file. See add_node
1689 for the structure of the node tree. */
1691 for (np
= nodehead
; np
!= NULL
; prev
= np
, np
= np
->left
)
1692 if (np
->fdp
== curfdp
)
1695 /* If we generated tags for this file, write and delete them. */
1698 /* This is the head of the last sublist, if any. The following
1699 instructions depend on this being true. */
1700 assert (np
->left
== NULL
);
1702 assert (fdhead
== curfdp
);
1703 assert (last_node
->fdp
== curfdp
);
1704 put_entries (np
); /* write tags for file curfdp->taggedfname */
1705 free_tree (np
); /* remove the written nodes */
1707 nodehead
= NULL
; /* no nodes left */
1709 prev
->left
= NULL
; /* delete the pointer to the sublist */
1715 * This routine sets up the boolean pseudo-functions which work
1716 * by setting boolean flags dependent upon the corresponding character.
1717 * Every char which is NOT in that string is not a white char. Therefore,
1718 * all of the array "_wht" is set to FALSE, and then the elements
1719 * subscripted by the chars in "white" are set to TRUE. Thus "_wht"
1720 * of a char is TRUE if it is the string "white", else FALSE.
1725 register const char *sp
;
1728 for (i
= 0; i
< CHARS
; i
++)
1729 iswhite (i
) = notinname (i
) = begtoken (i
) = intoken (i
) = endtoken (i
) = FALSE
;
1730 for (sp
= white
; *sp
!= '\0'; sp
++) iswhite (*sp
) = TRUE
;
1731 for (sp
= nonam
; *sp
!= '\0'; sp
++) notinname (*sp
) = TRUE
;
1732 notinname ('\0') = notinname ('\n');
1733 for (sp
= begtk
; *sp
!= '\0'; sp
++) begtoken (*sp
) = TRUE
;
1734 begtoken ('\0') = begtoken ('\n');
1735 for (sp
= midtk
; *sp
!= '\0'; sp
++) intoken (*sp
) = TRUE
;
1736 intoken ('\0') = intoken ('\n');
1737 for (sp
= endtk
; *sp
!= '\0'; sp
++) endtoken (*sp
) = TRUE
;
1738 endtoken ('\0') = endtoken ('\n');
1742 * This routine opens the specified file and calls the function
1743 * which finds the function and type definitions.
1746 find_entries (FILE *inf
)
1749 language
*lang
= curfdp
->lang
;
1750 Lang_function
*parser
= NULL
;
1752 /* If user specified a language, use it. */
1753 if (lang
!= NULL
&& lang
->function
!= NULL
)
1755 parser
= lang
->function
;
1758 /* Else try to guess the language given the file name. */
1761 lang
= get_language_from_filename (curfdp
->infname
, TRUE
);
1762 if (lang
!= NULL
&& lang
->function
!= NULL
)
1764 curfdp
->lang
= lang
;
1765 parser
= lang
->function
;
1769 /* Else look for sharp-bang as the first two characters. */
1771 && readline_internal (&lb
, inf
) > 0
1773 && lb
.buffer
[0] == '#'
1774 && lb
.buffer
[1] == '!')
1778 /* Set lp to point at the first char after the last slash in the
1779 line or, if no slashes, at the first nonblank. Then set cp to
1780 the first successive blank and terminate the string. */
1781 lp
= etags_strrchr (lb
.buffer
+2, '/');
1785 lp
= skip_spaces (lb
.buffer
+ 2);
1786 cp
= skip_non_spaces (lp
);
1789 if (strlen (lp
) > 0)
1791 lang
= get_language_from_interpreter (lp
);
1792 if (lang
!= NULL
&& lang
->function
!= NULL
)
1794 curfdp
->lang
= lang
;
1795 parser
= lang
->function
;
1800 /* We rewind here, even if inf may be a pipe. We fail if the
1801 length of the first line is longer than the pipe block size,
1802 which is unlikely. */
1805 /* Else try to guess the language given the case insensitive file name. */
1808 lang
= get_language_from_filename (curfdp
->infname
, FALSE
);
1809 if (lang
!= NULL
&& lang
->function
!= NULL
)
1811 curfdp
->lang
= lang
;
1812 parser
= lang
->function
;
1816 /* Else try Fortran or C. */
1819 node
*old_last_node
= last_node
;
1821 curfdp
->lang
= get_language_from_langname ("fortran");
1824 if (old_last_node
== last_node
)
1825 /* No Fortran entries found. Try C. */
1827 /* We do not tag if rewind fails.
1828 Only the file name will be recorded in the tags file. */
1830 curfdp
->lang
= get_language_from_langname (cplusplus
? "c++" : "c");
1836 if (!no_line_directive
1837 && curfdp
->lang
!= NULL
&& curfdp
->lang
->metasource
)
1838 /* It may be that this is a bingo.y file, and we already parsed a bingo.c
1839 file, or anyway we parsed a file that is automatically generated from
1840 this one. If this is the case, the bingo.c file contained #line
1841 directives that generated tags pointing to this file. Let's delete
1842 them all before parsing this file, which is the real source. */
1844 fdesc
**fdpp
= &fdhead
;
1845 while (*fdpp
!= NULL
)
1847 && streq ((*fdpp
)->taggedfname
, curfdp
->taggedfname
))
1848 /* We found one of those! We must delete both the file description
1849 and all tags referring to it. */
1851 fdesc
*badfdp
= *fdpp
;
1853 /* Delete the tags referring to badfdp->taggedfname
1854 that were obtained from badfdp->infname. */
1855 invalidate_nodes (badfdp
, &nodehead
);
1857 *fdpp
= badfdp
->next
; /* remove the bad description from the list */
1858 free_fdesc (badfdp
);
1861 fdpp
= &(*fdpp
)->next
; /* advance the list pointer */
1864 assert (parser
!= NULL
);
1866 /* Generic initializations before reading from file. */
1867 linebuffer_setlen (&filebuf
, 0); /* reset the file buffer */
1869 /* Generic initializations before parsing file with readline. */
1870 lineno
= 0; /* reset global line number */
1871 charno
= 0; /* reset global char number */
1872 linecharno
= 0; /* reset global char number of line start */
1876 regex_tag_multiline ();
1881 * Check whether an implicitly named tag should be created,
1882 * then call `pfnote'.
1883 * NAME is a string that is internally copied by this function.
1885 * TAGS format specification
1886 * Idea by Sam Kendall <kendall@mv.mv.com> (1997)
1887 * The following is explained in some more detail in etc/ETAGS.EBNF.
1889 * make_tag creates tags with "implicit tag names" (unnamed tags)
1890 * if the following are all true, assuming NONAM=" \f\t\n\r()=,;":
1891 * 1. NAME does not contain any of the characters in NONAM;
1892 * 2. LINESTART contains name as either a rightmost, or rightmost but
1893 * one character, substring;
1894 * 3. the character, if any, immediately before NAME in LINESTART must
1895 * be a character in NONAM;
1896 * 4. the character, if any, immediately after NAME in LINESTART must
1897 * also be a character in NONAM.
1899 * The implementation uses the notinname() macro, which recognizes the
1900 * characters stored in the string `nonam'.
1901 * etags.el needs to use the same characters that are in NONAM.
1904 make_tag (const char *name
, /* tag name, or NULL if unnamed */
1905 int namelen
, /* tag length */
1906 int is_func
, /* tag is a function */
1907 char *linestart
, /* start of the line where tag is */
1908 int linelen
, /* length of the line where tag is */
1909 int lno
, /* line number */
1910 long int cno
) /* character number */
1912 bool named
= (name
!= NULL
&& namelen
> 0);
1915 if (!CTAGS
&& named
) /* maybe set named to false */
1916 /* Let's try to make an implicit tag name, that is, create an unnamed tag
1917 such that etags.el can guess a name from it. */
1920 register const char *cp
= name
;
1922 for (i
= 0; i
< namelen
; i
++)
1923 if (notinname (*cp
++))
1925 if (i
== namelen
) /* rule #1 */
1927 cp
= linestart
+ linelen
- namelen
;
1928 if (notinname (linestart
[linelen
-1]))
1929 cp
-= 1; /* rule #4 */
1930 if (cp
>= linestart
/* rule #2 */
1932 || notinname (cp
[-1])) /* rule #3 */
1933 && strneq (name
, cp
, namelen
)) /* rule #2 */
1934 named
= FALSE
; /* use implicit tag name */
1939 nname
= savenstr (name
, namelen
);
1941 pfnote (nname
, is_func
, linestart
, linelen
, lno
, cno
);
1946 pfnote (char *name
, int is_func
, char *linestart
, int linelen
, int lno
, long int cno
)
1947 /* tag name, or NULL if unnamed */
1948 /* tag is a function */
1949 /* start of the line where tag is */
1950 /* length of the line where tag is */
1952 /* character number */
1956 assert (name
== NULL
|| name
[0] != '\0');
1957 if (CTAGS
&& name
== NULL
)
1960 np
= xnew (1, node
);
1962 /* If ctags mode, change name "main" to M<thisfilename>. */
1963 if (CTAGS
&& !cxref_style
&& streq (name
, "main"))
1965 register char *fp
= etags_strrchr (curfdp
->taggedfname
, '/');
1966 np
->name
= concat ("M", fp
== NULL
? curfdp
->taggedfname
: fp
+ 1, "");
1967 fp
= etags_strrchr (np
->name
, '.');
1968 if (fp
!= NULL
&& fp
[1] != '\0' && fp
[2] == '\0')
1974 np
->been_warned
= FALSE
;
1976 np
->is_func
= is_func
;
1978 if (np
->fdp
->usecharno
)
1979 /* Our char numbers are 0-base, because of C language tradition?
1980 ctags compatibility? old versions compatibility? I don't know.
1981 Anyway, since emacs's are 1-base we expect etags.el to take care
1982 of the difference. If we wanted to have 1-based numbers, we would
1983 uncomment the +1 below. */
1984 np
->cno
= cno
/* + 1 */ ;
1986 np
->cno
= invalidcharno
;
1987 np
->left
= np
->right
= NULL
;
1988 if (CTAGS
&& !cxref_style
)
1990 if (strlen (linestart
) < 50)
1991 np
->regex
= concat (linestart
, "$", "");
1993 np
->regex
= savenstr (linestart
, 50);
1996 np
->regex
= savenstr (linestart
, linelen
);
1998 add_node (np
, &nodehead
);
2003 * recurse on left children, iterate on right children.
2006 free_tree (register node
*np
)
2010 register node
*node_right
= np
->right
;
2011 free_tree (np
->left
);
2021 * delete a file description
2024 free_fdesc (register fdesc
*fdp
)
2026 free (fdp
->infname
);
2027 free (fdp
->infabsname
);
2028 free (fdp
->infabsdir
);
2029 free (fdp
->taggedfname
);
2036 * Adds a node to the tree of nodes. In etags mode, sort by file
2037 * name. In ctags mode, sort by tag name. Make no attempt at
2040 * add_node is the only function allowed to add nodes, so it can
2044 add_node (node
*np
, node
**cur_node_p
)
2047 register node
*cur_node
= *cur_node_p
;
2049 if (cur_node
== NULL
)
2059 /* For each file name, tags are in a linked sublist on the right
2060 pointer. The first tags of different files are a linked list
2061 on the left pointer. last_node points to the end of the last
2063 if (last_node
!= NULL
&& last_node
->fdp
== np
->fdp
)
2065 /* Let's use the same sublist as the last added node. */
2066 assert (last_node
->right
== NULL
);
2067 last_node
->right
= np
;
2070 else if (cur_node
->fdp
== np
->fdp
)
2072 /* Scanning the list we found the head of a sublist which is
2073 good for us. Let's scan this sublist. */
2074 add_node (np
, &cur_node
->right
);
2077 /* The head of this sublist is not good for us. Let's try the
2079 add_node (np
, &cur_node
->left
);
2080 } /* if ETAGS mode */
2085 dif
= strcmp (np
->name
, cur_node
->name
);
2088 * If this tag name matches an existing one, then
2089 * do not add the node, but maybe print a warning.
2091 if (no_duplicates
&& !dif
)
2093 if (np
->fdp
== cur_node
->fdp
)
2097 fprintf (stderr
, "Duplicate entry in file %s, line %d: %s\n",
2098 np
->fdp
->infname
, lineno
, np
->name
);
2099 fprintf (stderr
, "Second entry ignored\n");
2102 else if (!cur_node
->been_warned
&& !no_warnings
)
2106 "Duplicate entry in files %s and %s: %s (Warning only)\n",
2107 np
->fdp
->infname
, cur_node
->fdp
->infname
, np
->name
);
2108 cur_node
->been_warned
= TRUE
;
2113 /* Actually add the node */
2114 add_node (np
, dif
< 0 ? &cur_node
->left
: &cur_node
->right
);
2115 } /* if CTAGS mode */
2119 * invalidate_nodes ()
2120 * Scan the node tree and invalidate all nodes pointing to the
2121 * given file description (CTAGS case) or free them (ETAGS case).
2124 invalidate_nodes (fdesc
*badfdp
, node
**npp
)
2133 if (np
->left
!= NULL
)
2134 invalidate_nodes (badfdp
, &np
->left
);
2135 if (np
->fdp
== badfdp
)
2137 if (np
->right
!= NULL
)
2138 invalidate_nodes (badfdp
, &np
->right
);
2142 assert (np
->fdp
!= NULL
);
2143 if (np
->fdp
== badfdp
)
2145 *npp
= np
->left
; /* detach the sublist from the list */
2146 np
->left
= NULL
; /* isolate it */
2147 free_tree (np
); /* free it */
2148 invalidate_nodes (badfdp
, npp
);
2151 invalidate_nodes (badfdp
, &np
->left
);
2156 static int total_size_of_entries (node
*);
2157 static int number_len (long);
2159 /* Length of a non-negative number's decimal representation. */
2161 number_len (long int num
)
2164 while ((num
/= 10) > 0)
2170 * Return total number of characters that put_entries will output for
2171 * the nodes in the linked list at the right of the specified node.
2172 * This count is irrelevant with etags.el since emacs 19.34 at least,
2173 * but is still supplied for backward compatibility.
2176 total_size_of_entries (register node
*np
)
2178 register int total
= 0;
2180 for (; np
!= NULL
; np
= np
->right
)
2183 total
+= strlen (np
->regex
) + 1; /* pat\177 */
2184 if (np
->name
!= NULL
)
2185 total
+= strlen (np
->name
) + 1; /* name\001 */
2186 total
+= number_len ((long) np
->lno
) + 1; /* lno, */
2187 if (np
->cno
!= invalidcharno
) /* cno */
2188 total
+= number_len (np
->cno
);
2189 total
+= 1; /* newline */
2196 put_entries (register node
*np
)
2199 static fdesc
*fdp
= NULL
;
2204 /* Output subentries that precede this one */
2206 put_entries (np
->left
);
2208 /* Output this entry */
2217 fprintf (tagf
, "\f\n%s,%d\n",
2218 fdp
->taggedfname
, total_size_of_entries (np
));
2219 fdp
->written
= TRUE
;
2221 fputs (np
->regex
, tagf
);
2222 fputc ('\177', tagf
);
2223 if (np
->name
!= NULL
)
2225 fputs (np
->name
, tagf
);
2226 fputc ('\001', tagf
);
2228 fprintf (tagf
, "%d,", np
->lno
);
2229 if (np
->cno
!= invalidcharno
)
2230 fprintf (tagf
, "%ld", np
->cno
);
2236 if (np
->name
== NULL
)
2237 error ("internal error: NULL name in ctags mode.");
2242 fprintf (stdout
, "%s %s %d\n",
2243 np
->name
, np
->fdp
->taggedfname
, (np
->lno
+ 63) / 64);
2245 fprintf (stdout
, "%-16s %3d %-16s %s\n",
2246 np
->name
, np
->lno
, np
->fdp
->taggedfname
, np
->regex
);
2250 fprintf (tagf
, "%s\t%s\t", np
->name
, np
->fdp
->taggedfname
);
2253 { /* function or #define macro with args */
2254 putc (searchar
, tagf
);
2257 for (sp
= np
->regex
; *sp
; sp
++)
2259 if (*sp
== '\\' || *sp
== searchar
)
2263 putc (searchar
, tagf
);
2266 { /* anything else; text pattern inadequate */
2267 fprintf (tagf
, "%d", np
->lno
);
2272 } /* if this node contains a valid tag */
2274 /* Output subentries that follow this one */
2275 put_entries (np
->right
);
2277 put_entries (np
->left
);
2282 #define C_EXT 0x00fff /* C extensions */
2283 #define C_PLAIN 0x00000 /* C */
2284 #define C_PLPL 0x00001 /* C++ */
2285 #define C_STAR 0x00003 /* C* */
2286 #define C_JAVA 0x00005 /* JAVA */
2287 #define C_AUTO 0x01000 /* C, but switch to C++ if `class' is met */
2288 #define YACC 0x10000 /* yacc file */
2291 * The C symbol tables.
2296 st_C_objprot
, st_C_objimpl
, st_C_objend
,
2298 st_C_ignore
, st_C_attribute
,
2301 st_C_class
, st_C_template
,
2302 st_C_struct
, st_C_extern
, st_C_enum
, st_C_define
, st_C_typedef
2305 static unsigned int hash (const char *, unsigned int);
2306 static struct C_stab_entry
* in_word_set (const char *, unsigned int);
2307 static enum sym_type
C_symtype (char *, int, int);
2309 /* Feed stuff between (but not including) %[ and %] lines to:
2315 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
2319 while, 0, st_C_ignore
2320 switch, 0, st_C_ignore
2321 return, 0, st_C_ignore
2322 __attribute__, 0, st_C_attribute
2323 GTY, 0, st_C_attribute
2324 @interface, 0, st_C_objprot
2325 @protocol, 0, st_C_objprot
2326 @implementation,0, st_C_objimpl
2327 @end, 0, st_C_objend
2328 import, (C_JAVA & ~C_PLPL), st_C_ignore
2329 package, (C_JAVA & ~C_PLPL), st_C_ignore
2330 friend, C_PLPL, st_C_ignore
2331 extends, (C_JAVA & ~C_PLPL), st_C_javastruct
2332 implements, (C_JAVA & ~C_PLPL), st_C_javastruct
2333 interface, (C_JAVA & ~C_PLPL), st_C_struct
2334 class, 0, st_C_class
2335 namespace, C_PLPL, st_C_struct
2336 domain, C_STAR, st_C_struct
2337 union, 0, st_C_struct
2338 struct, 0, st_C_struct
2339 extern, 0, st_C_extern
2341 typedef, 0, st_C_typedef
2342 define, 0, st_C_define
2343 undef, 0, st_C_define
2344 operator, C_PLPL, st_C_operator
2345 template, 0, st_C_template
2346 # DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach).
2347 DEFUN, 0, st_C_gnumacro
2348 SYSCALL, 0, st_C_gnumacro
2349 ENTRY, 0, st_C_gnumacro
2350 PSEUDO, 0, st_C_gnumacro
2351 # These are defined inside C functions, so currently they are not met.
2352 # EXFUN used in glibc, DEFVAR_* in emacs.
2353 #EXFUN, 0, st_C_gnumacro
2354 #DEFVAR_, 0, st_C_gnumacro
2356 and replace lines between %< and %> with its output, then:
2357 - remove the #if characterset check
2358 - make in_word_set static and not inline. */
2360 /* C code produced by gperf version 3.0.1 */
2361 /* Command-line: gperf -m 5 */
2362 /* Computed positions: -k'2-3' */
2364 struct C_stab_entry
{ const char *name
; int c_ext
; enum sym_type type
; };
2365 /* maximum key range = 33, duplicates = 0 */
2367 static inline unsigned int
2368 hash (register const char *str
, register unsigned int len
)
2370 static unsigned char asso_values
[] =
2372 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2373 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2374 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2375 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2376 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2377 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2378 35, 35, 35, 35, 35, 35, 35, 35, 35, 3,
2379 26, 35, 35, 35, 35, 35, 35, 35, 27, 35,
2380 35, 35, 35, 24, 0, 35, 35, 35, 35, 0,
2381 35, 35, 35, 35, 35, 1, 35, 16, 35, 6,
2382 23, 0, 0, 35, 22, 0, 35, 35, 5, 0,
2383 0, 15, 1, 35, 6, 35, 8, 19, 35, 16,
2384 4, 5, 35, 35, 35, 35, 35, 35, 35, 35,
2385 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2386 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2387 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2388 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2389 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2390 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2391 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2392 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2393 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2394 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2395 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2396 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2397 35, 35, 35, 35, 35, 35
2399 register int hval
= len
;
2404 hval
+= asso_values
[(unsigned char)str
[2]];
2407 hval
+= asso_values
[(unsigned char)str
[1]];
2413 static struct C_stab_entry
*
2414 in_word_set (register const char *str
, register unsigned int len
)
2418 TOTAL_KEYWORDS
= 33,
2419 MIN_WORD_LENGTH
= 2,
2420 MAX_WORD_LENGTH
= 15,
2425 static struct C_stab_entry wordlist
[] =
2428 {"if", 0, st_C_ignore
},
2429 {"GTY", 0, st_C_attribute
},
2430 {"@end", 0, st_C_objend
},
2431 {"union", 0, st_C_struct
},
2432 {"define", 0, st_C_define
},
2433 {"import", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2434 {"template", 0, st_C_template
},
2435 {"operator", C_PLPL
, st_C_operator
},
2436 {"@interface", 0, st_C_objprot
},
2437 {"implements", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2438 {"friend", C_PLPL
, st_C_ignore
},
2439 {"typedef", 0, st_C_typedef
},
2440 {"return", 0, st_C_ignore
},
2441 {"@implementation",0, st_C_objimpl
},
2442 {"@protocol", 0, st_C_objprot
},
2443 {"interface", (C_JAVA
& ~C_PLPL
), st_C_struct
},
2444 {"extern", 0, st_C_extern
},
2445 {"extends", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2446 {"struct", 0, st_C_struct
},
2447 {"domain", C_STAR
, st_C_struct
},
2448 {"switch", 0, st_C_ignore
},
2449 {"enum", 0, st_C_enum
},
2450 {"for", 0, st_C_ignore
},
2451 {"namespace", C_PLPL
, st_C_struct
},
2452 {"class", 0, st_C_class
},
2453 {"while", 0, st_C_ignore
},
2454 {"undef", 0, st_C_define
},
2455 {"package", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2456 {"__attribute__", 0, st_C_attribute
},
2457 {"SYSCALL", 0, st_C_gnumacro
},
2458 {"ENTRY", 0, st_C_gnumacro
},
2459 {"PSEUDO", 0, st_C_gnumacro
},
2460 {"DEFUN", 0, st_C_gnumacro
}
2463 if (len
<= MAX_WORD_LENGTH
&& len
>= MIN_WORD_LENGTH
)
2465 register int key
= hash (str
, len
);
2467 if (key
<= MAX_HASH_VALUE
&& key
>= 0)
2469 register const char *s
= wordlist
[key
].name
;
2471 if (*str
== *s
&& !strncmp (str
+ 1, s
+ 1, len
- 1) && s
[len
] == '\0')
2472 return &wordlist
[key
];
2479 static enum sym_type
2480 C_symtype (char *str
, int len
, int c_ext
)
2482 register struct C_stab_entry
*se
= in_word_set (str
, len
);
2484 if (se
== NULL
|| (se
->c_ext
&& !(c_ext
& se
->c_ext
)))
2491 * Ignoring __attribute__ ((list))
2493 static bool inattribute
; /* looking at an __attribute__ construct */
2496 * C functions and variables are recognized using a simple
2497 * finite automaton. fvdef is its state variable.
2501 fvnone
, /* nothing seen */
2502 fdefunkey
, /* Emacs DEFUN keyword seen */
2503 fdefunname
, /* Emacs DEFUN name seen */
2504 foperator
, /* func: operator keyword seen (cplpl) */
2505 fvnameseen
, /* function or variable name seen */
2506 fstartlist
, /* func: just after open parenthesis */
2507 finlist
, /* func: in parameter list */
2508 flistseen
, /* func: after parameter list */
2509 fignore
, /* func: before open brace */
2510 vignore
/* var-like: ignore until ';' */
2513 static bool fvextern
; /* func or var: extern keyword seen; */
2516 * typedefs are recognized using a simple finite automaton.
2517 * typdef is its state variable.
2521 tnone
, /* nothing seen */
2522 tkeyseen
, /* typedef keyword seen */
2523 ttypeseen
, /* defined type seen */
2524 tinbody
, /* inside typedef body */
2525 tend
, /* just before typedef tag */
2526 tignore
/* junk after typedef tag */
2530 * struct-like structures (enum, struct and union) are recognized
2531 * using another simple finite automaton. `structdef' is its state
2536 snone
, /* nothing seen yet,
2537 or in struct body if bracelev > 0 */
2538 skeyseen
, /* struct-like keyword seen */
2539 stagseen
, /* struct-like tag seen */
2540 scolonseen
/* colon seen after struct-like tag */
2544 * When objdef is different from onone, objtag is the name of the class.
2546 static const char *objtag
= "<uninited>";
2549 * Yet another little state machine to deal with preprocessor lines.
2553 dnone
, /* nothing seen */
2554 dsharpseen
, /* '#' seen as first char on line */
2555 ddefineseen
, /* '#' and 'define' seen */
2556 dignorerest
/* ignore rest of line */
2560 * State machine for Objective C protocols and implementations.
2561 * Idea by Tom R.Hageman <tom@basil.icce.rug.nl> (1995)
2565 onone
, /* nothing seen */
2566 oprotocol
, /* @interface or @protocol seen */
2567 oimplementation
, /* @implementations seen */
2568 otagseen
, /* class name seen */
2569 oparenseen
, /* parenthesis before category seen */
2570 ocatseen
, /* category name seen */
2571 oinbody
, /* in @implementation body */
2572 omethodsign
, /* in @implementation body, after +/- */
2573 omethodtag
, /* after method name */
2574 omethodcolon
, /* after method colon */
2575 omethodparm
, /* after method parameter */
2576 oignore
/* wait for @end */
2581 * Use this structure to keep info about the token read, and how it
2582 * should be tagged. Used by the make_C_tag function to build a tag.
2586 char *line
; /* string containing the token */
2587 int offset
; /* where the token starts in LINE */
2588 int length
; /* token length */
2590 The previous members can be used to pass strings around for generic
2591 purposes. The following ones specifically refer to creating tags. In this
2592 case the token contained here is the pattern that will be used to create a
2595 bool valid
; /* do not create a tag; the token should be
2596 invalidated whenever a state machine is
2597 reset prematurely */
2598 bool named
; /* create a named tag */
2599 int lineno
; /* source line number of tag */
2600 long linepos
; /* source char number of tag */
2601 } token
; /* latest token read */
2604 * Variables and functions for dealing with nested structures.
2605 * Idea by Mykola Dzyuba <mdzyuba@yahoo.com> (2001)
2607 static void pushclass_above (int, char *, int);
2608 static void popclass_above (int);
2609 static void write_classname (linebuffer
*, const char *qualifier
);
2612 char **cname
; /* nested class names */
2613 int *bracelev
; /* nested class brace level */
2614 int nl
; /* class nesting level (elements used) */
2615 int size
; /* length of the array */
2616 } cstack
; /* stack for nested declaration tags */
2617 /* Current struct nesting depth (namespace, class, struct, union, enum). */
2618 #define nestlev (cstack.nl)
2619 /* After struct keyword or in struct body, not inside a nested function. */
2620 #define instruct (structdef == snone && nestlev > 0 \
2621 && bracelev == cstack.bracelev[nestlev-1] + 1)
2624 pushclass_above (int bracelev
, char *str
, int len
)
2628 popclass_above (bracelev
);
2630 if (nl
>= cstack
.size
)
2632 int size
= cstack
.size
*= 2;
2633 xrnew (cstack
.cname
, size
, char *);
2634 xrnew (cstack
.bracelev
, size
, int);
2636 assert (nl
== 0 || cstack
.bracelev
[nl
-1] < bracelev
);
2637 cstack
.cname
[nl
] = (str
== NULL
) ? NULL
: savenstr (str
, len
);
2638 cstack
.bracelev
[nl
] = bracelev
;
2643 popclass_above (int bracelev
)
2647 for (nl
= cstack
.nl
- 1;
2648 nl
>= 0 && cstack
.bracelev
[nl
] >= bracelev
;
2651 free (cstack
.cname
[nl
]);
2657 write_classname (linebuffer
*cn
, const char *qualifier
)
2660 int qlen
= strlen (qualifier
);
2662 if (cstack
.nl
== 0 || cstack
.cname
[0] == NULL
)
2666 cn
->buffer
[0] = '\0';
2670 len
= strlen (cstack
.cname
[0]);
2671 linebuffer_setlen (cn
, len
);
2672 strcpy (cn
->buffer
, cstack
.cname
[0]);
2674 for (i
= 1; i
< cstack
.nl
; i
++)
2679 s
= cstack
.cname
[i
];
2684 linebuffer_setlen (cn
, len
);
2685 strncat (cn
->buffer
, qualifier
, qlen
);
2686 strncat (cn
->buffer
, s
, slen
);
2691 static bool consider_token (char *, int, int, int *, int, int, bool *);
2692 static void make_C_tag (bool);
2696 * checks to see if the current token is at the start of a
2697 * function or variable, or corresponds to a typedef, or
2698 * is a struct/union/enum tag, or #define, or an enum constant.
2700 * *IS_FUNC gets TRUE if the token is a function or #define macro
2701 * with args. C_EXTP points to which language we are looking at.
2712 consider_token (register char *str
, register int len
, register int c
, int *c_extp
, int bracelev
, int parlev
, int *is_func_or_var
)
2713 /* IN: token pointer */
2714 /* IN: token length */
2715 /* IN: first char after the token */
2716 /* IN, OUT: C extensions mask */
2717 /* IN: brace level */
2718 /* IN: parenthesis level */
2719 /* OUT: function or variable found */
2721 /* When structdef is stagseen, scolonseen, or snone with bracelev > 0,
2722 structtype is the type of the preceding struct-like keyword, and
2723 structbracelev is the brace level where it has been seen. */
2724 static enum sym_type structtype
;
2725 static int structbracelev
;
2726 static enum sym_type toktype
;
2729 toktype
= C_symtype (str
, len
, *c_extp
);
2732 * Skip __attribute__
2734 if (toktype
== st_C_attribute
)
2741 * Advance the definedef state machine.
2746 /* We're not on a preprocessor line. */
2747 if (toktype
== st_C_gnumacro
)
2754 if (toktype
== st_C_define
)
2756 definedef
= ddefineseen
;
2760 definedef
= dignorerest
;
2765 * Make a tag for any macro, unless it is a constant
2766 * and constantypedefs is FALSE.
2768 definedef
= dignorerest
;
2769 *is_func_or_var
= (c
== '(');
2770 if (!*is_func_or_var
&& !constantypedefs
)
2777 error ("internal error: definedef value.");
2786 if (toktype
== st_C_typedef
)
2806 if (structdef
== snone
&& fvdef
== fvnone
)
2825 case st_C_javastruct
:
2826 if (structdef
== stagseen
)
2827 structdef
= scolonseen
;
2831 if ((*c_extp
& C_AUTO
) /* automatic detection of C++ language */
2833 && definedef
== dnone
&& structdef
== snone
2834 && typdef
== tnone
&& fvdef
== fvnone
)
2835 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
2836 if (toktype
== st_C_template
)
2843 && (typdef
== tkeyseen
2844 || (typedefs_or_cplusplus
&& structdef
== snone
)))
2846 structdef
= skeyseen
;
2847 structtype
= toktype
;
2848 structbracelev
= bracelev
;
2849 if (fvdef
== fvnameseen
)
2855 if (structdef
== skeyseen
)
2857 structdef
= stagseen
;
2861 if (typdef
!= tnone
)
2864 /* Detect Objective C constructs. */
2874 objdef
= oimplementation
;
2878 case oimplementation
:
2879 /* Save the class tag for functions or variables defined inside. */
2880 objtag
= savenstr (str
, len
);
2884 /* Save the class tag for categories. */
2885 objtag
= savenstr (str
, len
);
2887 *is_func_or_var
= TRUE
;
2891 *is_func_or_var
= TRUE
;
2899 objdef
= omethodtag
;
2900 linebuffer_setlen (&token_name
, len
);
2901 strncpy (token_name
.buffer
, str
, len
);
2902 token_name
.buffer
[len
] = '\0';
2908 objdef
= omethodparm
;
2914 objdef
= omethodtag
;
2915 linebuffer_setlen (&token_name
, token_name
.len
+ len
);
2916 strncat (token_name
.buffer
, str
, len
);
2921 if (toktype
== st_C_objend
)
2923 /* Memory leakage here: the string pointed by objtag is
2924 never released, because many tests would be needed to
2925 avoid breaking on incorrect input code. The amount of
2926 memory leaked here is the sum of the lengths of the
2934 /* A function, variable or enum constant? */
2956 *is_func_or_var
= TRUE
;
2960 && structdef
== snone
2961 && structtype
== st_C_enum
&& bracelev
> structbracelev
)
2962 return TRUE
; /* enum constant */
2968 fvdef
= fdefunname
; /* GNU macro */
2969 *is_func_or_var
= TRUE
;
2977 if ((strneq (str
, "asm", 3) && endtoken (str
[3]))
2978 || (strneq (str
, "__asm__", 7) && endtoken (str
[7])))
2987 if (len
>= 10 && strneq (str
+len
-10, "::operator", 10))
2989 if (*c_extp
& C_AUTO
) /* automatic detection of C++ */
2990 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
2992 *is_func_or_var
= TRUE
;
2995 if (bracelev
> 0 && !instruct
)
2997 fvdef
= fvnameseen
; /* function or variable */
2998 *is_func_or_var
= TRUE
;
3009 * C_entries often keeps pointers to tokens or lines which are older than
3010 * the line currently read. By keeping two line buffers, and switching
3011 * them at end of line, it is possible to use those pointers.
3019 #define current_lb_is_new (newndx == curndx)
3020 #define switch_line_buffers() (curndx = 1 - curndx)
3022 #define curlb (lbs[curndx].lb)
3023 #define newlb (lbs[newndx].lb)
3024 #define curlinepos (lbs[curndx].linepos)
3025 #define newlinepos (lbs[newndx].linepos)
3027 #define plainc ((c_ext & C_EXT) == C_PLAIN)
3028 #define cplpl (c_ext & C_PLPL)
3029 #define cjava ((c_ext & C_JAVA) == C_JAVA)
3031 #define CNL_SAVE_DEFINEDEF() \
3033 curlinepos = charno; \
3034 readline (&curlb, inf); \
3035 lp = curlb.buffer; \
3042 CNL_SAVE_DEFINEDEF(); \
3043 if (savetoken.valid) \
3045 token = savetoken; \
3046 savetoken.valid = FALSE; \
3048 definedef = dnone; \
3053 make_C_tag (int isfun
)
3055 /* This function is never called when token.valid is FALSE, but
3056 we must protect against invalid input or internal errors. */
3058 make_tag (token_name
.buffer
, token_name
.len
, isfun
, token
.line
,
3059 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3061 { /* this branch is optimized away if !DEBUG */
3062 make_tag (concat ("INVALID TOKEN:-->", token_name
.buffer
, ""),
3063 token_name
.len
+ 17, isfun
, token
.line
,
3064 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3065 error ("INVALID TOKEN");
3068 token
.valid
= FALSE
;
3074 * This routine finds functions, variables, typedefs,
3075 * #define's, enum constants and struct/union/enum definitions in
3076 * C syntax and adds them to the list.
3079 C_entries (int c_ext
, FILE *inf
)
3080 /* extension of C */
3083 register char c
; /* latest char read; '\0' for end of line */
3084 register char *lp
; /* pointer one beyond the character `c' */
3085 int curndx
, newndx
; /* indices for current and new lb */
3086 register int tokoff
; /* offset in line of start of current token */
3087 register int toklen
; /* length of current token */
3088 const char *qualifier
; /* string used to qualify names */
3089 int qlen
; /* length of qualifier */
3090 int bracelev
; /* current brace level */
3091 int bracketlev
; /* current bracket level */
3092 int parlev
; /* current parenthesis level */
3093 int attrparlev
; /* __attribute__ parenthesis level */
3094 int templatelev
; /* current template level */
3095 int typdefbracelev
; /* bracelev where a typedef struct body begun */
3096 bool incomm
, inquote
, inchar
, quotednl
, midtoken
;
3097 bool yacc_rules
; /* in the rules part of a yacc file */
3098 struct tok savetoken
= {0}; /* token saved during preprocessor handling */
3101 linebuffer_init (&lbs
[0].lb
);
3102 linebuffer_init (&lbs
[1].lb
);
3103 if (cstack
.size
== 0)
3105 cstack
.size
= (DEBUG
) ? 1 : 4;
3107 cstack
.cname
= xnew (cstack
.size
, char *);
3108 cstack
.bracelev
= xnew (cstack
.size
, int);
3111 tokoff
= toklen
= typdefbracelev
= 0; /* keep compiler quiet */
3112 curndx
= newndx
= 0;
3116 fvdef
= fvnone
; fvextern
= FALSE
; typdef
= tnone
;
3117 structdef
= snone
; definedef
= dnone
; objdef
= onone
;
3119 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3120 token
.valid
= savetoken
.valid
= FALSE
;
3121 bracelev
= bracketlev
= parlev
= attrparlev
= templatelev
= 0;
3123 { qualifier
= "."; qlen
= 1; }
3125 { qualifier
= "::"; qlen
= 2; }
3133 /* If we are at the end of the line, the next character is a
3134 '\0'; do not skip it, because it is what tells us
3135 to read the next line. */
3156 /* Newlines inside comments do not end macro definitions in
3158 CNL_SAVE_DEFINEDEF ();
3171 /* Newlines inside strings do not end macro definitions
3172 in traditional cpp, even though compilers don't
3173 usually accept them. */
3174 CNL_SAVE_DEFINEDEF ();
3184 /* Hmmm, something went wrong. */
3220 if (fvdef
!= finlist
&& fvdef
!= fignore
&& fvdef
!= vignore
)
3235 else if (/* cplpl && */ *lp
== '/')
3241 if ((c_ext
& YACC
) && *lp
== '%')
3243 /* Entering or exiting rules section in yacc file. */
3245 definedef
= dnone
; fvdef
= fvnone
; fvextern
= FALSE
;
3246 typdef
= tnone
; structdef
= snone
;
3247 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3249 yacc_rules
= !yacc_rules
;
3255 if (definedef
== dnone
)
3258 bool cpptoken
= TRUE
;
3260 /* Look back on this line. If all blanks, or nonblanks
3261 followed by an end of comment, this is a preprocessor
3263 for (cp
= newlb
.buffer
; cp
< lp
-1; cp
++)
3266 if (*cp
== '*' && cp
[1] == '/')
3275 definedef
= dsharpseen
;
3276 } /* if (definedef == dnone) */
3287 CNL_SAVE_DEFINEDEF ();
3294 /* Consider token only if some involved conditions are satisfied. */
3295 if (typdef
!= tignore
3296 && definedef
!= dignorerest
3299 && (definedef
!= dnone
3300 || structdef
!= scolonseen
)
3307 if (c
== ':' && *lp
== ':' && begtoken (lp
[1]))
3308 /* This handles :: in the middle,
3309 but not at the beginning of an identifier.
3310 Also, space-separated :: is not recognized. */
3312 if (c_ext
& C_AUTO
) /* automatic detection of C++ */
3313 c_ext
= (c_ext
| C_PLPL
) & ~C_AUTO
;
3317 goto still_in_token
;
3321 bool funorvar
= FALSE
;
3324 || consider_token (newlb
.buffer
+ tokoff
, toklen
, c
,
3325 &c_ext
, bracelev
, parlev
,
3328 if (fvdef
== foperator
)
3331 lp
= skip_spaces (lp
-1);
3335 && !iswhite (*lp
) && *lp
!= '(')
3338 toklen
+= lp
- oldlp
;
3340 token
.named
= FALSE
;
3342 && nestlev
> 0 && definedef
== dnone
)
3343 /* in struct body */
3345 write_classname (&token_name
, qualifier
);
3346 linebuffer_setlen (&token_name
,
3347 token_name
.len
+qlen
+toklen
);
3348 strcat (token_name
.buffer
, qualifier
);
3349 strncat (token_name
.buffer
,
3350 newlb
.buffer
+ tokoff
, toklen
);
3353 else if (objdef
== ocatseen
)
3354 /* Objective C category */
3356 int len
= strlen (objtag
) + 2 + toklen
;
3357 linebuffer_setlen (&token_name
, len
);
3358 strcpy (token_name
.buffer
, objtag
);
3359 strcat (token_name
.buffer
, "(");
3360 strncat (token_name
.buffer
,
3361 newlb
.buffer
+ tokoff
, toklen
);
3362 strcat (token_name
.buffer
, ")");
3365 else if (objdef
== omethodtag
3366 || objdef
== omethodparm
)
3367 /* Objective C method */
3371 else if (fvdef
== fdefunname
)
3372 /* GNU DEFUN and similar macros */
3374 bool defun
= (newlb
.buffer
[tokoff
] == 'F');
3378 /* Rewrite the tag so that emacs lisp DEFUNs
3379 can be found by their elisp name */
3385 linebuffer_setlen (&token_name
, len
);
3386 strncpy (token_name
.buffer
,
3387 newlb
.buffer
+ off
, len
);
3388 token_name
.buffer
[len
] = '\0';
3391 if (token_name
.buffer
[len
] == '_')
3392 token_name
.buffer
[len
] = '-';
3393 token
.named
= defun
;
3397 linebuffer_setlen (&token_name
, toklen
);
3398 strncpy (token_name
.buffer
,
3399 newlb
.buffer
+ tokoff
, toklen
);
3400 token_name
.buffer
[toklen
] = '\0';
3401 /* Name macros and members. */
3402 token
.named
= (structdef
== stagseen
3403 || typdef
== ttypeseen
3406 && definedef
== dignorerest
)
3408 && definedef
== dnone
3409 && structdef
== snone
3412 token
.lineno
= lineno
;
3413 token
.offset
= tokoff
;
3414 token
.length
= toklen
;
3415 token
.line
= newlb
.buffer
;
3416 token
.linepos
= newlinepos
;
3419 if (definedef
== dnone
3420 && (fvdef
== fvnameseen
3421 || fvdef
== foperator
3422 || structdef
== stagseen
3424 || typdef
== ttypeseen
3425 || objdef
!= onone
))
3427 if (current_lb_is_new
)
3428 switch_line_buffers ();
3430 else if (definedef
!= dnone
3431 || fvdef
== fdefunname
3433 make_C_tag (funorvar
);
3435 else /* not yacc and consider_token failed */
3437 if (inattribute
&& fvdef
== fignore
)
3439 /* We have just met __attribute__ after a
3440 function parameter list: do not tag the
3447 } /* if (endtoken (c)) */
3448 else if (intoken (c
))
3454 } /* if (midtoken) */
3455 else if (begtoken (c
))
3463 /* This prevents tagging fb in
3464 void (__attribute__((noreturn)) *fb) (void);
3465 Fixing this is not easy and not very important. */
3469 if (plainc
|| declarations
)
3471 make_C_tag (TRUE
); /* a function */
3476 if (structdef
== stagseen
&& !cjava
)
3478 popclass_above (bracelev
);
3486 if (!yacc_rules
|| lp
== newlb
.buffer
+ 1)
3488 tokoff
= lp
- 1 - newlb
.buffer
;
3493 } /* if (begtoken) */
3494 } /* if must look at token */
3497 /* Detect end of line, colon, comma, semicolon and various braces
3498 after having handled a token.*/
3504 if (yacc_rules
&& token
.offset
== 0 && token
.valid
)
3506 make_C_tag (FALSE
); /* a yacc function */
3509 if (definedef
!= dnone
)
3515 make_C_tag (TRUE
); /* an Objective C class */
3519 objdef
= omethodcolon
;
3520 linebuffer_setlen (&token_name
, token_name
.len
+ 1);
3521 strcat (token_name
.buffer
, ":");
3524 if (structdef
== stagseen
)
3526 structdef
= scolonseen
;
3529 /* Should be useless, but may be work as a safety net. */
3530 if (cplpl
&& fvdef
== flistseen
)
3532 make_C_tag (TRUE
); /* a function */
3538 if (definedef
!= dnone
|| inattribute
)
3544 make_C_tag (FALSE
); /* a typedef */
3554 if (typdef
== tignore
|| cplpl
)
3558 if ((globals
&& bracelev
== 0 && (!fvextern
|| declarations
))
3559 || (members
&& instruct
))
3560 make_C_tag (FALSE
); /* a variable */
3563 token
.valid
= FALSE
;
3567 && (cplpl
|| !instruct
)
3568 && (typdef
== tnone
|| (typdef
!= tignore
&& instruct
)))
3570 && plainc
&& instruct
))
3571 make_C_tag (TRUE
); /* a function */
3577 && cplpl
&& structdef
== stagseen
)
3578 make_C_tag (FALSE
); /* forward declaration */
3580 token
.valid
= FALSE
;
3581 } /* switch (fvdef) */
3587 if (structdef
== stagseen
)
3591 if (definedef
!= dnone
|| inattribute
)
3597 make_C_tag (TRUE
); /* an Objective C method */
3618 && (!fvextern
|| declarations
))
3619 || (members
&& instruct
)))
3620 make_C_tag (FALSE
); /* a variable */
3623 if ((declarations
&& typdef
== tnone
&& !instruct
)
3624 || (members
&& typdef
!= tignore
&& instruct
))
3626 make_C_tag (TRUE
); /* a function */
3629 else if (!declarations
)
3631 token
.valid
= FALSE
;
3636 if (structdef
== stagseen
)
3640 if (definedef
!= dnone
|| inattribute
)
3642 if (structdef
== stagseen
)
3649 make_C_tag (FALSE
); /* a typedef */
3661 if ((members
&& bracelev
== 1)
3662 || (globals
&& bracelev
== 0
3663 && (!fvextern
|| declarations
)))
3664 make_C_tag (FALSE
); /* a variable */
3678 if (definedef
!= dnone
)
3680 if (objdef
== otagseen
&& parlev
== 0)
3681 objdef
= oparenseen
;
3685 if (typdef
== ttypeseen
3689 /* This handles constructs like:
3690 typedef void OperatorFun (int fun); */
3709 if (--attrparlev
== 0)
3710 inattribute
= FALSE
;
3713 if (definedef
!= dnone
)
3715 if (objdef
== ocatseen
&& parlev
== 1)
3717 make_C_tag (TRUE
); /* an Objective C category */
3731 || typdef
== ttypeseen
))
3734 make_C_tag (FALSE
); /* a typedef */
3737 else if (parlev
< 0) /* can happen due to ill-conceived #if's. */
3741 if (definedef
!= dnone
)
3743 if (typdef
== ttypeseen
)
3745 /* Whenever typdef is set to tinbody (currently only
3746 here), typdefbracelev should be set to bracelev. */
3748 typdefbracelev
= bracelev
;
3753 make_C_tag (TRUE
); /* a function */
3762 make_C_tag (TRUE
); /* an Objective C class */
3767 make_C_tag (TRUE
); /* an Objective C method */
3771 /* Neutralize `extern "C" {' grot. */
3772 if (bracelev
== 0 && structdef
== snone
&& nestlev
== 0
3780 case skeyseen
: /* unnamed struct */
3781 pushclass_above (bracelev
, NULL
, 0);
3784 case stagseen
: /* named struct or enum */
3785 case scolonseen
: /* a class */
3786 pushclass_above (bracelev
,token
.line
+token
.offset
, token
.length
);
3788 make_C_tag (FALSE
); /* a struct or enum */
3794 if (definedef
!= dnone
)
3796 if (fvdef
== fstartlist
)
3798 fvdef
= fvnone
; /* avoid tagging `foo' in `foo (*bar()) ()' */
3799 token
.valid
= FALSE
;
3803 if (definedef
!= dnone
)
3806 if (!ignoreindent
&& lp
== newlb
.buffer
+ 1)
3809 token
.valid
= FALSE
; /* unexpected value, token unreliable */
3810 bracelev
= 0; /* reset brace level if first column */
3811 parlev
= 0; /* also reset paren level, just in case... */
3813 else if (bracelev
< 0)
3815 token
.valid
= FALSE
; /* something gone amiss, token unreliable */
3818 if (bracelev
== 0 && fvdef
== vignore
)
3819 fvdef
= fvnone
; /* end of function */
3820 popclass_above (bracelev
);
3822 /* Only if typdef == tinbody is typdefbracelev significant. */
3823 if (typdef
== tinbody
&& bracelev
<= typdefbracelev
)
3825 assert (bracelev
== typdefbracelev
);
3830 if (definedef
!= dnone
)
3840 if ((members
&& bracelev
== 1)
3841 || (globals
&& bracelev
== 0 && (!fvextern
|| declarations
)))
3842 make_C_tag (FALSE
); /* a variable */
3850 && (structdef
== stagseen
|| fvdef
== fvnameseen
))
3857 if (templatelev
> 0)
3865 if (objdef
== oinbody
&& bracelev
== 0)
3867 objdef
= omethodsign
;
3872 case '#': case '~': case '&': case '%': case '/':
3873 case '|': case '^': case '!': case '.': case '?':
3874 if (definedef
!= dnone
)
3876 /* These surely cannot follow a function tag in C. */
3889 if (objdef
== otagseen
)
3891 make_C_tag (TRUE
); /* an Objective C class */
3894 /* If a macro spans multiple lines don't reset its state. */
3896 CNL_SAVE_DEFINEDEF ();
3902 } /* while not eof */
3904 free (lbs
[0].lb
.buffer
);
3905 free (lbs
[1].lb
.buffer
);
3909 * Process either a C++ file or a C file depending on the setting
3913 default_C_entries (FILE *inf
)
3915 C_entries (cplusplus
? C_PLPL
: C_AUTO
, inf
);
3918 /* Always do plain C. */
3920 plain_C_entries (FILE *inf
)
3925 /* Always do C++. */
3927 Cplusplus_entries (FILE *inf
)
3929 C_entries (C_PLPL
, inf
);
3932 /* Always do Java. */
3934 Cjava_entries (FILE *inf
)
3936 C_entries (C_JAVA
, inf
);
3941 Cstar_entries (FILE *inf
)
3943 C_entries (C_STAR
, inf
);
3946 /* Always do Yacc. */
3948 Yacc_entries (FILE *inf
)
3950 C_entries (YACC
, inf
);
3954 /* Useful macros. */
3955 #define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \
3956 for (; /* loop initialization */ \
3957 !feof (file_pointer) /* loop test */ \
3958 && /* instructions at start of loop */ \
3959 (readline (&line_buffer, file_pointer), \
3960 char_pointer = line_buffer.buffer, \
3964 #define LOOKING_AT(cp, kw) /* kw is the keyword, a literal string */ \
3965 ((assert ("" kw), TRUE) /* syntax error if not a literal string */ \
3966 && strneq ((cp), kw, sizeof (kw)-1) /* cp points at kw */ \
3967 && notinname ((cp)[sizeof (kw)-1]) /* end of kw */ \
3968 && ((cp) = skip_spaces ((cp)+sizeof (kw)-1))) /* skip spaces */
3970 /* Similar to LOOKING_AT but does not use notinname, does not skip */
3971 #define LOOKING_AT_NOCASE(cp, kw) /* the keyword is a literal string */ \
3972 ((assert ("" kw), TRUE) /* syntax error if not a literal string */ \
3973 && strncaseeq ((cp), kw, sizeof (kw)-1) /* cp points at kw */ \
3974 && ((cp) += sizeof (kw)-1)) /* skip spaces */
3977 * Read a file, but do no processing. This is used to do regexp
3978 * matching on files that have no language defined.
3981 just_read_file (FILE *inf
)
3984 readline (&lb
, inf
);
3988 /* Fortran parsing */
3990 static void F_takeprec (void);
3991 static void F_getit (FILE *);
3996 dbp
= skip_spaces (dbp
);
4000 dbp
= skip_spaces (dbp
);
4001 if (strneq (dbp
, "(*)", 3))
4006 if (!ISDIGIT (*dbp
))
4008 --dbp
; /* force failure */
4013 while (ISDIGIT (*dbp
));
4021 dbp
= skip_spaces (dbp
);
4024 readline (&lb
, inf
);
4029 dbp
= skip_spaces (dbp
);
4031 if (!ISALPHA (*dbp
) && *dbp
!= '_' && *dbp
!= '$')
4033 for (cp
= dbp
+ 1; *cp
!= '\0' && intoken (*cp
); cp
++)
4035 make_tag (dbp
, cp
-dbp
, TRUE
,
4036 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4041 Fortran_functions (FILE *inf
)
4043 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4046 dbp
++; /* Ratfor escape to fortran */
4047 dbp
= skip_spaces (dbp
);
4051 if (LOOKING_AT_NOCASE (dbp
, "recursive"))
4052 dbp
= skip_spaces (dbp
);
4054 if (LOOKING_AT_NOCASE (dbp
, "pure"))
4055 dbp
= skip_spaces (dbp
);
4057 if (LOOKING_AT_NOCASE (dbp
, "elemental"))
4058 dbp
= skip_spaces (dbp
);
4060 switch (lowcase (*dbp
))
4063 if (nocase_tail ("integer"))
4067 if (nocase_tail ("real"))
4071 if (nocase_tail ("logical"))
4075 if (nocase_tail ("complex") || nocase_tail ("character"))
4079 if (nocase_tail ("double"))
4081 dbp
= skip_spaces (dbp
);
4084 if (nocase_tail ("precision"))
4090 dbp
= skip_spaces (dbp
);
4093 switch (lowcase (*dbp
))
4096 if (nocase_tail ("function"))
4100 if (nocase_tail ("subroutine"))
4104 if (nocase_tail ("entry"))
4108 if (nocase_tail ("blockdata") || nocase_tail ("block data"))
4110 dbp
= skip_spaces (dbp
);
4111 if (*dbp
== '\0') /* assume un-named */
4112 make_tag ("blockdata", 9, TRUE
,
4113 lb
.buffer
, dbp
- lb
.buffer
, lineno
, linecharno
);
4115 F_getit (inf
); /* look for name */
4126 * Philippe Waroquiers (1998)
4129 /* Once we are positioned after an "interesting" keyword, let's get
4130 the real tag value necessary. */
4132 Ada_getit (FILE *inf
, const char *name_qualifier
)
4140 dbp
= skip_spaces (dbp
);
4142 || (dbp
[0] == '-' && dbp
[1] == '-'))
4144 readline (&lb
, inf
);
4147 switch (lowcase (*dbp
))
4150 if (nocase_tail ("body"))
4152 /* Skipping body of procedure body or package body or ....
4153 resetting qualifier to body instead of spec. */
4154 name_qualifier
= "/b";
4159 /* Skipping type of task type or protected type ... */
4160 if (nocase_tail ("type"))
4167 for (cp
= dbp
; *cp
!= '\0' && *cp
!= '"'; cp
++)
4172 dbp
= skip_spaces (dbp
);
4175 && (ISALPHA (*cp
) || ISDIGIT (*cp
) || *cp
== '_' || *cp
== '.'));
4183 name
= concat (dbp
, name_qualifier
, "");
4185 make_tag (name
, strlen (name
), TRUE
,
4186 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4195 Ada_funcs (FILE *inf
)
4197 bool inquote
= FALSE
;
4198 bool skip_till_semicolumn
= FALSE
;
4200 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4202 while (*dbp
!= '\0')
4204 /* Skip a string i.e. "abcd". */
4205 if (inquote
|| (*dbp
== '"'))
4207 dbp
= etags_strchr (dbp
+ !inquote
, '"');
4212 continue; /* advance char */
4217 break; /* advance line */
4221 /* Skip comments. */
4222 if (dbp
[0] == '-' && dbp
[1] == '-')
4223 break; /* advance line */
4225 /* Skip character enclosed in single quote i.e. 'a'
4226 and skip single quote starting an attribute i.e. 'Image. */
4235 if (skip_till_semicolumn
)
4238 skip_till_semicolumn
= FALSE
;
4240 continue; /* advance char */
4243 /* Search for beginning of a token. */
4244 if (!begtoken (*dbp
))
4247 continue; /* advance char */
4250 /* We are at the beginning of a token. */
4251 switch (lowcase (*dbp
))
4254 if (!packages_only
&& nocase_tail ("function"))
4255 Ada_getit (inf
, "/f");
4257 break; /* from switch */
4258 continue; /* advance char */
4260 if (!packages_only
&& nocase_tail ("procedure"))
4261 Ada_getit (inf
, "/p");
4262 else if (nocase_tail ("package"))
4263 Ada_getit (inf
, "/s");
4264 else if (nocase_tail ("protected")) /* protected type */
4265 Ada_getit (inf
, "/t");
4267 break; /* from switch */
4268 continue; /* advance char */
4271 if (typedefs
&& !packages_only
&& nocase_tail ("use"))
4273 /* when tagging types, avoid tagging use type Pack.Typename;
4274 for this, we will skip everything till a ; */
4275 skip_till_semicolumn
= TRUE
;
4276 continue; /* advance char */
4280 if (!packages_only
&& nocase_tail ("task"))
4281 Ada_getit (inf
, "/k");
4282 else if (typedefs
&& !packages_only
&& nocase_tail ("type"))
4284 Ada_getit (inf
, "/t");
4285 while (*dbp
!= '\0')
4289 break; /* from switch */
4290 continue; /* advance char */
4293 /* Look for the end of the token. */
4294 while (!endtoken (*dbp
))
4297 } /* advance char */
4298 } /* advance line */
4303 * Unix and microcontroller assembly tag handling
4304 * Labels: /^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]/
4305 * Idea by Bob Weiner, Motorola Inc. (1994)
4308 Asm_labels (FILE *inf
)
4312 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4314 /* If first char is alphabetic or one of [_.$], test for colon
4315 following identifier. */
4316 if (ISALPHA (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4318 /* Read past label. */
4320 while (ISALNUM (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4322 if (*cp
== ':' || iswhite (*cp
))
4323 /* Found end of label, so copy it and add it to the table. */
4324 make_tag (lb
.buffer
, cp
- lb
.buffer
, TRUE
,
4325 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4333 * Perl sub names: /^sub[ \t\n]+[^ \t\n{]+/
4334 * Perl variable names: /^(my|local).../
4335 * Original code by Bart Robinson <lomew@cs.utah.edu> (1995)
4336 * Additions by Michael Ernst <mernst@alum.mit.edu> (1997)
4337 * Ideas by Kai Großjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE> (2001)
4340 Perl_functions (FILE *inf
)
4342 char *package
= savestr ("main"); /* current package name */
4345 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4347 cp
= skip_spaces (cp
);
4349 if (LOOKING_AT (cp
, "package"))
4352 get_tag (cp
, &package
);
4354 else if (LOOKING_AT (cp
, "sub"))
4359 while (!notinname (*cp
))
4362 continue; /* nothing found */
4363 if ((pos
= etags_strchr (sp
, ':')) != NULL
4364 && pos
< cp
&& pos
[1] == ':')
4365 /* The name is already qualified. */
4366 make_tag (sp
, cp
- sp
, TRUE
,
4367 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4371 char savechar
, *name
;
4375 name
= concat (package
, "::", sp
);
4377 make_tag (name
, strlen (name
), TRUE
,
4378 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4382 else if (globals
) /* only if we are tagging global vars */
4384 /* Skip a qualifier, if any. */
4385 bool qual
= LOOKING_AT (cp
, "my") || LOOKING_AT (cp
, "local");
4386 /* After "my" or "local", but before any following paren or space. */
4387 char *varstart
= cp
;
4389 if (qual
/* should this be removed? If yes, how? */
4390 && (*cp
== '$' || *cp
== '@' || *cp
== '%'))
4395 while (ISALNUM (*cp
) || *cp
== '_');
4399 /* Should be examining a variable list at this point;
4400 could insist on seeing an open parenthesis. */
4401 while (*cp
!= '\0' && *cp
!= ';' && *cp
!= '=' && *cp
!= ')')
4407 make_tag (varstart
, cp
- varstart
, FALSE
,
4408 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4417 * Look for /^[\t]*def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/
4418 * Idea by Eric S. Raymond <esr@thyrsus.com> (1997)
4419 * More ideas by seb bacon <seb@jamkit.com> (2002)
4422 Python_functions (FILE *inf
)
4426 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4428 cp
= skip_spaces (cp
);
4429 if (LOOKING_AT (cp
, "def") || LOOKING_AT (cp
, "class"))
4432 while (!notinname (*cp
) && *cp
!= ':')
4434 make_tag (name
, cp
- name
, TRUE
,
4435 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4444 * - /^[ \t]*function[ \t\n]+[^ \t\n(]+/
4445 * - /^[ \t]*class[ \t\n]+[^ \t\n]+/
4446 * - /^[ \t]*define\(\"[^\"]+/
4447 * Only with --members:
4448 * - /^[ \t]*var[ \t\n]+\$[^ \t\n=;]/
4449 * Idea by Diez B. Roggisch (2001)
4452 PHP_functions (FILE *inf
)
4454 register char *cp
, *name
;
4455 bool search_identifier
= FALSE
;
4457 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4459 cp
= skip_spaces (cp
);
4461 if (search_identifier
4464 while (!notinname (*cp
))
4466 make_tag (name
, cp
- name
, TRUE
,
4467 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4468 search_identifier
= FALSE
;
4470 else if (LOOKING_AT (cp
, "function"))
4473 cp
= skip_spaces (cp
+1);
4477 while (!notinname (*cp
))
4479 make_tag (name
, cp
- name
, TRUE
,
4480 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4483 search_identifier
= TRUE
;
4485 else if (LOOKING_AT (cp
, "class"))
4490 while (*cp
!= '\0' && !iswhite (*cp
))
4492 make_tag (name
, cp
- name
, FALSE
,
4493 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4496 search_identifier
= TRUE
;
4498 else if (strneq (cp
, "define", 6)
4499 && (cp
= skip_spaces (cp
+6))
4501 && (*cp
== '"' || *cp
== '\''))
4505 while (*cp
!= quote
&& *cp
!= '\0')
4507 make_tag (name
, cp
- name
, FALSE
,
4508 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4511 && LOOKING_AT (cp
, "var")
4515 while (!notinname (*cp
))
4517 make_tag (name
, cp
- name
, FALSE
,
4518 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4525 * Cobol tag functions
4526 * We could look for anything that could be a paragraph name.
4527 * i.e. anything that starts in column 8 is one word and ends in a full stop.
4528 * Idea by Corny de Souza (1993)
4531 Cobol_paragraphs (FILE *inf
)
4533 register char *bp
, *ep
;
4535 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4541 /* If eoln, compiler option or comment ignore whole line. */
4542 if (bp
[-1] != ' ' || !ISALNUM (bp
[0]))
4545 for (ep
= bp
; ISALNUM (*ep
) || *ep
== '-'; ep
++)
4548 make_tag (bp
, ep
- bp
, TRUE
,
4549 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
4556 * Ideas by Assar Westerlund <assar@sics.se> (2001)
4559 Makefile_targets (FILE *inf
)
4563 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4565 if (*bp
== '\t' || *bp
== '#')
4567 while (*bp
!= '\0' && *bp
!= '=' && *bp
!= ':')
4569 if (*bp
== ':' || (globals
&& *bp
== '='))
4571 /* We should detect if there is more than one tag, but we do not.
4572 We just skip initial and final spaces. */
4573 char * namestart
= skip_spaces (lb
.buffer
);
4574 while (--bp
> namestart
)
4575 if (!notinname (*bp
))
4577 make_tag (namestart
, bp
- namestart
+ 1, TRUE
,
4578 lb
.buffer
, bp
- lb
.buffer
+ 2, lineno
, linecharno
);
4586 * Original code by Mosur K. Mohan (1989)
4588 * Locates tags for procedures & functions. Doesn't do any type- or
4589 * var-definitions. It does look for the keyword "extern" or
4590 * "forward" immediately following the procedure statement; if found,
4591 * the tag is skipped.
4594 Pascal_functions (FILE *inf
)
4596 linebuffer tline
; /* mostly copied from C_entries */
4598 int save_lineno
, namelen
, taglen
;
4601 bool /* each of these flags is TRUE if: */
4602 incomment
, /* point is inside a comment */
4603 inquote
, /* point is inside '..' string */
4604 get_tagname
, /* point is after PROCEDURE/FUNCTION
4605 keyword, so next item = potential tag */
4606 found_tag
, /* point is after a potential tag */
4607 inparms
, /* point is within parameter-list */
4608 verify_tag
; /* point has passed the parm-list, so the
4609 next token will determine whether this
4610 is a FORWARD/EXTERN to be ignored, or
4611 whether it is a real tag */
4613 save_lcno
= save_lineno
= namelen
= taglen
= 0; /* keep compiler quiet */
4614 name
= NULL
; /* keep compiler quiet */
4617 linebuffer_init (&tline
);
4619 incomment
= inquote
= FALSE
;
4620 found_tag
= FALSE
; /* have a proc name; check if extern */
4621 get_tagname
= FALSE
; /* found "procedure" keyword */
4622 inparms
= FALSE
; /* found '(' after "proc" */
4623 verify_tag
= FALSE
; /* check if "extern" is ahead */
4626 while (!feof (inf
)) /* long main loop to get next char */
4629 if (c
== '\0') /* if end of line */
4631 readline (&lb
, inf
);
4635 if (!((found_tag
&& verify_tag
)
4637 c
= *dbp
++; /* only if don't need *dbp pointing
4638 to the beginning of the name of
4639 the procedure or function */
4643 if (c
== '}') /* within { } comments */
4645 else if (c
== '*' && *dbp
== ')') /* within (* *) comments */
4662 inquote
= TRUE
; /* found first quote */
4664 case '{': /* found open { comment */
4668 if (*dbp
== '*') /* found open (* comment */
4673 else if (found_tag
) /* found '(' after tag, i.e., parm-list */
4676 case ')': /* end of parms list */
4681 if (found_tag
&& !inparms
) /* end of proc or fn stmt */
4688 if (found_tag
&& verify_tag
&& (*dbp
!= ' '))
4690 /* Check if this is an "extern" declaration. */
4693 if (lowcase (*dbp
== 'e'))
4695 if (nocase_tail ("extern")) /* superfluous, really! */
4701 else if (lowcase (*dbp
) == 'f')
4703 if (nocase_tail ("forward")) /* check for forward reference */
4709 if (found_tag
&& verify_tag
) /* not external proc, so make tag */
4713 make_tag (name
, namelen
, TRUE
,
4714 tline
.buffer
, taglen
, save_lineno
, save_lcno
);
4718 if (get_tagname
) /* grab name of proc or fn */
4725 /* Find block name. */
4726 for (cp
= dbp
+ 1; *cp
!= '\0' && !endtoken (*cp
); cp
++)
4729 /* Save all values for later tagging. */
4730 linebuffer_setlen (&tline
, lb
.len
);
4731 strcpy (tline
.buffer
, lb
.buffer
);
4732 save_lineno
= lineno
;
4733 save_lcno
= linecharno
;
4734 name
= tline
.buffer
+ (dbp
- lb
.buffer
);
4736 taglen
= cp
- lb
.buffer
+ 1;
4738 dbp
= cp
; /* set dbp to e-o-token */
4739 get_tagname
= FALSE
;
4743 /* And proceed to check for "extern". */
4745 else if (!incomment
&& !inquote
&& !found_tag
)
4747 /* Check for proc/fn keywords. */
4748 switch (lowcase (c
))
4751 if (nocase_tail ("rocedure")) /* c = 'p', dbp has advanced */
4755 if (nocase_tail ("unction"))
4760 } /* while not eof */
4762 free (tline
.buffer
);
4767 * Lisp tag functions
4768 * look for (def or (DEF, quote or QUOTE
4771 static void L_getit (void);
4776 if (*dbp
== '\'') /* Skip prefix quote */
4778 else if (*dbp
== '(')
4781 /* Try to skip "(quote " */
4782 if (!LOOKING_AT (dbp
, "quote") && !LOOKING_AT (dbp
, "QUOTE"))
4783 /* Ok, then skip "(" before name in (defstruct (foo)) */
4784 dbp
= skip_spaces (dbp
);
4786 get_tag (dbp
, NULL
);
4790 Lisp_functions (FILE *inf
)
4792 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4797 if (strneq (dbp
+1, "def", 3) || strneq (dbp
+1, "DEF", 3))
4799 dbp
= skip_non_spaces (dbp
);
4800 dbp
= skip_spaces (dbp
);
4805 /* Check for (foo::defmumble name-defined ... */
4808 while (!notinname (*dbp
) && *dbp
!= ':');
4813 while (*dbp
== ':');
4815 if (strneq (dbp
, "def", 3) || strneq (dbp
, "DEF", 3))
4817 dbp
= skip_non_spaces (dbp
);
4818 dbp
= skip_spaces (dbp
);
4828 * Lua script language parsing
4829 * Original code by David A. Capello <dacap@users.sourceforge.net> (2004)
4831 * "function" and "local function" are tags if they start at column 1.
4834 Lua_functions (FILE *inf
)
4838 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4840 if (bp
[0] != 'f' && bp
[0] != 'l')
4843 (void)LOOKING_AT (bp
, "local"); /* skip possible "local" */
4845 if (LOOKING_AT (bp
, "function"))
4853 * Just look for lines where the first character is '/'
4854 * Also look at "defineps" for PSWrap
4856 * Richard Mlynarik <mly@adoc.xerox.com> (1997)
4857 * Masatake Yamato <masata-y@is.aist-nara.ac.jp> (1999)
4860 PS_functions (FILE *inf
)
4862 register char *bp
, *ep
;
4864 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4869 *ep
!= '\0' && *ep
!= ' ' && *ep
!= '{';
4872 make_tag (bp
, ep
- bp
, TRUE
,
4873 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
4875 else if (LOOKING_AT (bp
, "defineps"))
4883 * Ignore anything after \ followed by space or in ( )
4884 * Look for words defined by :
4885 * Look for constant, code, create, defer, value, and variable
4886 * OBP extensions: Look for buffer:, field,
4887 * Ideas by Eduardo Horvath <eeh@netbsd.org> (2004)
4890 Forth_words (FILE *inf
)
4894 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4895 while ((bp
= skip_spaces (bp
))[0] != '\0')
4896 if (bp
[0] == '\\' && iswhite (bp
[1]))
4897 break; /* read next line */
4898 else if (bp
[0] == '(' && iswhite (bp
[1]))
4899 do /* skip to ) or eol */
4901 while (*bp
!= ')' && *bp
!= '\0');
4902 else if ((bp
[0] == ':' && iswhite (bp
[1]) && bp
++)
4903 || LOOKING_AT_NOCASE (bp
, "constant")
4904 || LOOKING_AT_NOCASE (bp
, "code")
4905 || LOOKING_AT_NOCASE (bp
, "create")
4906 || LOOKING_AT_NOCASE (bp
, "defer")
4907 || LOOKING_AT_NOCASE (bp
, "value")
4908 || LOOKING_AT_NOCASE (bp
, "variable")
4909 || LOOKING_AT_NOCASE (bp
, "buffer:")
4910 || LOOKING_AT_NOCASE (bp
, "field"))
4911 get_tag (skip_spaces (bp
), NULL
); /* Yay! A definition! */
4913 bp
= skip_non_spaces (bp
);
4918 * Scheme tag functions
4919 * look for (def... xyzzy
4921 * (def ... ((...(xyzzy ....
4923 * Original code by Ken Haase (1985?)
4926 Scheme_functions (FILE *inf
)
4930 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4932 if (strneq (bp
, "(def", 4) || strneq (bp
, "(DEF", 4))
4934 bp
= skip_non_spaces (bp
+4);
4935 /* Skip over open parens and white space. Don't continue past
4937 while (*bp
&& notinname (*bp
))
4941 if (LOOKING_AT (bp
, "(SET!") || LOOKING_AT (bp
, "(set!"))
4947 /* Find tags in TeX and LaTeX input files. */
4949 /* TEX_toktab is a table of TeX control sequences that define tags.
4950 * Each entry records one such control sequence.
4952 * Original code from who knows whom.
4954 * Stefan Monnier (2002)
4957 static linebuffer
*TEX_toktab
= NULL
; /* Table with tag tokens */
4959 /* Default set of control sequences to put into TEX_toktab.
4960 The value of environment var TEXTAGS is prepended to this. */
4961 static const char *TEX_defenv
= "\
4962 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
4963 :part:appendix:entry:index:def\
4964 :newcommand:renewcommand:newenvironment:renewenvironment";
4966 static void TEX_mode (FILE *);
4967 static void TEX_decode_env (const char *, const char *);
4969 static char TEX_esc
= '\\';
4970 static char TEX_opgrp
= '{';
4971 static char TEX_clgrp
= '}';
4974 * TeX/LaTeX scanning loop.
4977 TeX_commands (FILE *inf
)
4982 /* Select either \ or ! as escape character. */
4985 /* Initialize token table once from environment. */
4986 if (TEX_toktab
== NULL
)
4987 TEX_decode_env ("TEXTAGS", TEX_defenv
);
4989 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4991 /* Look at each TEX keyword in line. */
4994 /* Look for a TEX escape. */
4995 while (*cp
++ != TEX_esc
)
4996 if (cp
[-1] == '\0' || cp
[-1] == '%')
4999 for (key
= TEX_toktab
; key
->buffer
!= NULL
; key
++)
5000 if (strneq (cp
, key
->buffer
, key
->len
))
5003 int namelen
, linelen
;
5006 cp
= skip_spaces (cp
+ key
->len
);
5007 if (*cp
== TEX_opgrp
)
5013 (!iswhite (*p
) && *p
!= '#' &&
5014 *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
);
5019 if (!opgrp
|| *p
== TEX_clgrp
)
5021 while (*p
!= '\0' && *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
)
5023 linelen
= p
- lb
.buffer
+ 1;
5025 make_tag (cp
, namelen
, TRUE
,
5026 lb
.buffer
, linelen
, lineno
, linecharno
);
5027 goto tex_next_line
; /* We only tag a line once */
5035 #define TEX_LESC '\\'
5036 #define TEX_SESC '!'
5038 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
5039 chars accordingly. */
5041 TEX_mode (FILE *inf
)
5045 while ((c
= getc (inf
)) != EOF
)
5047 /* Skip to next line if we hit the TeX comment char. */
5049 while (c
!= '\n' && c
!= EOF
)
5051 else if (c
== TEX_LESC
|| c
== TEX_SESC
)
5067 /* If the input file is compressed, inf is a pipe, and rewind may fail.
5068 No attempt is made to correct the situation. */
5072 /* Read environment and prepend it to the default string.
5073 Build token table. */
5075 TEX_decode_env (const char *evarname
, const char *defenv
)
5077 register const char *env
, *p
;
5080 /* Append default string to environment. */
5081 env
= getenv (evarname
);
5085 env
= concat (env
, defenv
, "");
5087 /* Allocate a token table */
5088 for (len
= 1, p
= env
; p
;)
5089 if ((p
= etags_strchr (p
, ':')) && *++p
!= '\0')
5091 TEX_toktab
= xnew (len
, linebuffer
);
5093 /* Unpack environment string into token table. Be careful about */
5094 /* zero-length strings (leading ':', "::" and trailing ':') */
5095 for (i
= 0; *env
!= '\0';)
5097 p
= etags_strchr (env
, ':');
5098 if (!p
) /* End of environment string. */
5099 p
= env
+ strlen (env
);
5101 { /* Only non-zero strings. */
5102 TEX_toktab
[i
].buffer
= savenstr (env
, p
- env
);
5103 TEX_toktab
[i
].len
= p
- env
;
5110 TEX_toktab
[i
].buffer
= NULL
; /* Mark end of table. */
5111 TEX_toktab
[i
].len
= 0;
5118 /* Texinfo support. Dave Love, Mar. 2000. */
5120 Texinfo_nodes (FILE *inf
)
5123 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5124 if (LOOKING_AT (cp
, "@node"))
5127 while (*cp
!= '\0' && *cp
!= ',')
5129 make_tag (start
, cp
- start
, TRUE
,
5130 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
5137 * Contents of <title>, <h1>, <h2>, <h3> are tags.
5138 * Contents of <a name=xxx> are tags with name xxx.
5140 * Francesco Potortì, 2002.
5143 HTML_labels (FILE *inf
)
5145 bool getnext
= FALSE
; /* next text outside of HTML tags is a tag */
5146 bool skiptag
= FALSE
; /* skip to the end of the current HTML tag */
5147 bool intag
= FALSE
; /* inside an html tag, looking for ID= */
5148 bool inanchor
= FALSE
; /* when INTAG, is an anchor, look for NAME= */
5152 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5154 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
5155 for (;;) /* loop on the same line */
5157 if (skiptag
) /* skip HTML tag */
5159 while (*dbp
!= '\0' && *dbp
!= '>')
5165 continue; /* look on the same line */
5167 break; /* go to next line */
5170 else if (intag
) /* look for "name=" or "id=" */
5172 while (*dbp
!= '\0' && *dbp
!= '>'
5173 && lowcase (*dbp
) != 'n' && lowcase (*dbp
) != 'i')
5176 break; /* go to next line */
5181 continue; /* look on the same line */
5183 if ((inanchor
&& LOOKING_AT_NOCASE (dbp
, "name="))
5184 || LOOKING_AT_NOCASE (dbp
, "id="))
5186 bool quoted
= (dbp
[0] == '"');
5189 for (end
= ++dbp
; *end
!= '\0' && *end
!= '"'; end
++)
5192 for (end
= dbp
; *end
!= '\0' && intoken (*end
); end
++)
5194 linebuffer_setlen (&token_name
, end
- dbp
);
5195 strncpy (token_name
.buffer
, dbp
, end
- dbp
);
5196 token_name
.buffer
[end
- dbp
] = '\0';
5199 intag
= FALSE
; /* we found what we looked for */
5200 skiptag
= TRUE
; /* skip to the end of the tag */
5201 getnext
= TRUE
; /* then grab the text */
5202 continue; /* look on the same line */
5207 else if (getnext
) /* grab next tokens and tag them */
5209 dbp
= skip_spaces (dbp
);
5211 break; /* go to next line */
5215 inanchor
= (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]));
5216 continue; /* look on the same line */
5219 for (end
= dbp
+ 1; *end
!= '\0' && *end
!= '<'; end
++)
5221 make_tag (token_name
.buffer
, token_name
.len
, TRUE
,
5222 dbp
, end
- dbp
, lineno
, linecharno
);
5223 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5225 break; /* go to next line */
5228 else /* look for an interesting HTML tag */
5230 while (*dbp
!= '\0' && *dbp
!= '<')
5233 break; /* go to next line */
5235 if (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]))
5238 continue; /* look on the same line */
5240 else if (LOOKING_AT_NOCASE (dbp
, "<title>")
5241 || LOOKING_AT_NOCASE (dbp
, "<h1>")
5242 || LOOKING_AT_NOCASE (dbp
, "<h2>")
5243 || LOOKING_AT_NOCASE (dbp
, "<h3>"))
5247 continue; /* look on the same line */
5258 * Assumes that the predicate or rule starts at column 0.
5259 * Only the first clause of a predicate or rule is added.
5260 * Original code by Sunichirou Sugou (1989)
5261 * Rewritten by Anders Lindgren (1996)
5263 static size_t prolog_pr (char *, char *);
5264 static void prolog_skip_comment (linebuffer
*, FILE *);
5265 static size_t prolog_atom (char *, size_t);
5268 Prolog_functions (FILE *inf
)
5278 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5280 if (cp
[0] == '\0') /* Empty line */
5282 else if (iswhite (cp
[0])) /* Not a predicate */
5284 else if (cp
[0] == '/' && cp
[1] == '*') /* comment. */
5285 prolog_skip_comment (&lb
, inf
);
5286 else if ((len
= prolog_pr (cp
, last
)) > 0)
5288 /* Predicate or rule. Store the function name so that we
5289 only generate a tag for the first clause. */
5291 last
= xnew (len
+ 1, char);
5292 else if (len
+ 1 > allocated
)
5293 xrnew (last
, len
+ 1, char);
5294 allocated
= len
+ 1;
5295 strncpy (last
, cp
, len
);
5304 prolog_skip_comment (linebuffer
*plb
, FILE *inf
)
5310 for (cp
= plb
->buffer
; *cp
!= '\0'; cp
++)
5311 if (cp
[0] == '*' && cp
[1] == '/')
5313 readline (plb
, inf
);
5315 while (!feof (inf
));
5319 * A predicate or rule definition is added if it matches:
5320 * <beginning of line><Prolog Atom><whitespace>(
5321 * or <beginning of line><Prolog Atom><whitespace>:-
5323 * It is added to the tags database if it doesn't match the
5324 * name of the previous clause header.
5326 * Return the size of the name of the predicate or rule, or 0 if no
5330 prolog_pr (char *s
, char *last
)
5332 /* Name of last clause. */
5337 pos
= prolog_atom (s
, 0);
5342 pos
= skip_spaces (s
+ pos
) - s
;
5345 || (s
[pos
] == '(' && (pos
+= 1))
5346 || (s
[pos
] == ':' && s
[pos
+ 1] == '-' && (pos
+= 2)))
5347 && (last
== NULL
/* save only the first clause */
5348 || len
!= strlen (last
)
5349 || !strneq (s
, last
, len
)))
5351 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5359 * Consume a Prolog atom.
5360 * Return the number of bytes consumed, or 0 if there was an error.
5362 * A prolog atom, in this context, could be one of:
5363 * - An alphanumeric sequence, starting with a lower case letter.
5364 * - A quoted arbitrary string. Single quotes can escape themselves.
5365 * Backslash quotes everything.
5368 prolog_atom (char *s
, size_t pos
)
5374 if (ISLOWER (s
[pos
]) || (s
[pos
] == '_'))
5376 /* The atom is unquoted. */
5378 while (ISALNUM (s
[pos
]) || (s
[pos
] == '_'))
5382 return pos
- origpos
;
5384 else if (s
[pos
] == '\'')
5395 pos
++; /* A double quote */
5397 else if (s
[pos
] == '\0')
5398 /* Multiline quoted atoms are ignored. */
5400 else if (s
[pos
] == '\\')
5402 if (s
[pos
+1] == '\0')
5409 return pos
- origpos
;
5417 * Support for Erlang
5419 * Generates tags for functions, defines, and records.
5420 * Assumes that Erlang functions start at column 0.
5421 * Original code by Anders Lindgren (1996)
5423 static int erlang_func (char *, char *);
5424 static void erlang_attribute (char *);
5425 static int erlang_atom (char *);
5428 Erlang_functions (FILE *inf
)
5438 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5440 if (cp
[0] == '\0') /* Empty line */
5442 else if (iswhite (cp
[0])) /* Not function nor attribute */
5444 else if (cp
[0] == '%') /* comment */
5446 else if (cp
[0] == '"') /* Sometimes, strings start in column one */
5448 else if (cp
[0] == '-') /* attribute, e.g. "-define" */
5450 erlang_attribute (cp
);
5457 else if ((len
= erlang_func (cp
, last
)) > 0)
5460 * Function. Store the function name so that we only
5461 * generates a tag for the first clause.
5464 last
= xnew (len
+ 1, char);
5465 else if (len
+ 1 > allocated
)
5466 xrnew (last
, len
+ 1, char);
5467 allocated
= len
+ 1;
5468 strncpy (last
, cp
, len
);
5477 * A function definition is added if it matches:
5478 * <beginning of line><Erlang Atom><whitespace>(
5480 * It is added to the tags database if it doesn't match the
5481 * name of the previous clause header.
5483 * Return the size of the name of the function, or 0 if no function
5487 erlang_func (char *s
, char *last
)
5489 /* Name of last clause. */
5494 pos
= erlang_atom (s
);
5499 pos
= skip_spaces (s
+ pos
) - s
;
5501 /* Save only the first clause. */
5504 || len
!= (int)strlen (last
)
5505 || !strneq (s
, last
, len
)))
5507 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5516 * Handle attributes. Currently, tags are generated for defines
5519 * They are on the form:
5520 * -define(foo, bar).
5521 * -define(Foo(M, N), M+N).
5522 * -record(graph, {vtab = notable, cyclic = true}).
5525 erlang_attribute (char *s
)
5529 if ((LOOKING_AT (cp
, "-define") || LOOKING_AT (cp
, "-record"))
5532 int len
= erlang_atom (skip_spaces (cp
));
5534 make_tag (cp
, len
, TRUE
, s
, cp
+ len
- s
, lineno
, linecharno
);
5541 * Consume an Erlang atom (or variable).
5542 * Return the number of bytes consumed, or -1 if there was an error.
5545 erlang_atom (char *s
)
5549 if (ISALPHA (s
[pos
]) || s
[pos
] == '_')
5551 /* The atom is unquoted. */
5554 while (ISALNUM (s
[pos
]) || s
[pos
] == '_');
5556 else if (s
[pos
] == '\'')
5558 for (pos
++; s
[pos
] != '\''; pos
++)
5559 if (s
[pos
] == '\0' /* multiline quoted atoms are ignored */
5560 || (s
[pos
] == '\\' && s
[++pos
] == '\0'))
5569 static char *scan_separators (char *);
5570 static void add_regex (char *, language
*);
5571 static char *substitute (char *, char *, struct re_registers
*);
5574 * Take a string like "/blah/" and turn it into "blah", verifying
5575 * that the first and last characters are the same, and handling
5576 * quoted separator characters. Actually, stops on the occurrence of
5577 * an unquoted separator. Also process \t, \n, etc. and turn into
5578 * appropriate characters. Works in place. Null terminates name string.
5579 * Returns pointer to terminating separator, or NULL for
5580 * unterminated regexps.
5583 scan_separators (char *name
)
5586 char *copyto
= name
;
5587 bool quoted
= FALSE
;
5589 for (++name
; *name
!= '\0'; ++name
)
5595 case 'a': *copyto
++ = '\007'; break; /* BEL (bell) */
5596 case 'b': *copyto
++ = '\b'; break; /* BS (back space) */
5597 case 'd': *copyto
++ = 0177; break; /* DEL (delete) */
5598 case 'e': *copyto
++ = 033; break; /* ESC (delete) */
5599 case 'f': *copyto
++ = '\f'; break; /* FF (form feed) */
5600 case 'n': *copyto
++ = '\n'; break; /* NL (new line) */
5601 case 'r': *copyto
++ = '\r'; break; /* CR (carriage return) */
5602 case 't': *copyto
++ = '\t'; break; /* TAB (horizontal tab) */
5603 case 'v': *copyto
++ = '\v'; break; /* VT (vertical tab) */
5609 /* Something else is quoted, so preserve the quote. */
5617 else if (*name
== '\\')
5619 else if (*name
== sep
)
5625 name
= NULL
; /* signal unterminated regexp */
5627 /* Terminate copied string. */
5632 /* Look at the argument of --regex or --no-regex and do the right
5633 thing. Same for each line of a regexp file. */
5635 analyse_regex (char *regex_arg
)
5637 if (regex_arg
== NULL
)
5639 free_regexps (); /* --no-regex: remove existing regexps */
5643 /* A real --regexp option or a line in a regexp file. */
5644 switch (regex_arg
[0])
5646 /* Comments in regexp file or null arg to --regex. */
5652 /* Read a regex file. This is recursive and may result in a
5653 loop, which will stop when the file descriptors are exhausted. */
5657 linebuffer regexbuf
;
5658 char *regexfile
= regex_arg
+ 1;
5660 /* regexfile is a file containing regexps, one per line. */
5661 regexfp
= fopen (regexfile
, "r");
5662 if (regexfp
== NULL
)
5667 linebuffer_init (®exbuf
);
5668 while (readline_internal (®exbuf
, regexfp
) > 0)
5669 analyse_regex (regexbuf
.buffer
);
5670 free (regexbuf
.buffer
);
5675 /* Regexp to be used for a specific language only. */
5679 char *lang_name
= regex_arg
+ 1;
5682 for (cp
= lang_name
; *cp
!= '}'; cp
++)
5685 error ("unterminated language name in regex: %s", regex_arg
);
5689 lang
= get_language_from_langname (lang_name
);
5692 add_regex (cp
, lang
);
5696 /* Regexp to be used for any language. */
5698 add_regex (regex_arg
, NULL
);
5703 /* Separate the regexp pattern, compile it,
5704 and care for optional name and modifiers. */
5706 add_regex (char *regexp_pattern
, language
*lang
)
5708 static struct re_pattern_buffer zeropattern
;
5709 char sep
, *pat
, *name
, *modifiers
;
5712 struct re_pattern_buffer
*patbuf
;
5715 force_explicit_name
= TRUE
, /* do not use implicit tag names */
5716 ignore_case
= FALSE
, /* case is significant */
5717 multi_line
= FALSE
, /* matches are done one line at a time */
5718 single_line
= FALSE
; /* dot does not match newline */
5721 if (strlen (regexp_pattern
) < 3)
5723 error ("null regexp");
5726 sep
= regexp_pattern
[0];
5727 name
= scan_separators (regexp_pattern
);
5730 error ("%s: unterminated regexp", regexp_pattern
);
5735 error ("null name for regexp \"%s\"", regexp_pattern
);
5738 modifiers
= scan_separators (name
);
5739 if (modifiers
== NULL
) /* no terminating separator --> no name */
5745 modifiers
+= 1; /* skip separator */
5747 /* Parse regex modifiers. */
5748 for (; modifiers
[0] != '\0'; modifiers
++)
5749 switch (modifiers
[0])
5752 if (modifiers
== name
)
5753 error ("forcing explicit tag name but no name, ignoring");
5754 force_explicit_name
= TRUE
;
5764 need_filebuf
= TRUE
;
5767 error ("invalid regexp modifier `%c', ignoring", modifiers
[0]);
5771 patbuf
= xnew (1, struct re_pattern_buffer
);
5772 *patbuf
= zeropattern
;
5775 static char lc_trans
[CHARS
];
5777 for (i
= 0; i
< CHARS
; i
++)
5778 lc_trans
[i
] = lowcase (i
);
5779 patbuf
->translate
= lc_trans
; /* translation table to fold case */
5783 pat
= concat ("^", regexp_pattern
, ""); /* anchor to beginning of line */
5785 pat
= regexp_pattern
;
5788 re_set_syntax (RE_SYNTAX_EMACS
| RE_DOT_NEWLINE
);
5790 re_set_syntax (RE_SYNTAX_EMACS
);
5792 err
= re_compile_pattern (pat
, strlen (pat
), patbuf
);
5797 error ("%s while compiling pattern", err
);
5802 p_head
= xnew (1, regexp
);
5803 p_head
->pattern
= savestr (regexp_pattern
);
5804 p_head
->p_next
= rp
;
5805 p_head
->lang
= lang
;
5806 p_head
->pat
= patbuf
;
5807 p_head
->name
= savestr (name
);
5808 p_head
->error_signaled
= FALSE
;
5809 p_head
->force_explicit_name
= force_explicit_name
;
5810 p_head
->ignore_case
= ignore_case
;
5811 p_head
->multi_line
= multi_line
;
5815 * Do the substitutions indicated by the regular expression and
5819 substitute (char *in
, char *out
, struct re_registers
*regs
)
5822 int size
, dig
, diglen
;
5825 size
= strlen (out
);
5827 /* Pass 1: figure out how much to allocate by finding all \N strings. */
5828 if (out
[size
- 1] == '\\')
5829 fatal ("pattern error in \"%s\"", out
);
5830 for (t
= etags_strchr (out
, '\\');
5832 t
= etags_strchr (t
+ 2, '\\'))
5836 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
5842 /* Allocate space and do the substitutions. */
5844 result
= xnew (size
+ 1, char);
5846 for (t
= result
; *out
!= '\0'; out
++)
5847 if (*out
== '\\' && ISDIGIT (*++out
))
5850 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
5851 strncpy (t
, in
+ regs
->start
[dig
], diglen
);
5858 assert (t
<= result
+ size
);
5859 assert (t
- result
== (int)strlen (result
));
5864 /* Deallocate all regexps. */
5869 while (p_head
!= NULL
)
5871 rp
= p_head
->p_next
;
5872 free (p_head
->pattern
);
5873 free (p_head
->name
);
5881 * Reads the whole file as a single string from `filebuf' and looks for
5882 * multi-line regular expressions, creating tags on matches.
5883 * readline already dealt with normal regexps.
5885 * Idea by Ben Wing <ben@666.com> (2002).
5888 regex_tag_multiline (void)
5890 char *buffer
= filebuf
.buffer
;
5894 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
5898 if (!rp
->multi_line
)
5899 continue; /* skip normal regexps */
5901 /* Generic initializations before parsing file from memory. */
5902 lineno
= 1; /* reset global line number */
5903 charno
= 0; /* reset global char number */
5904 linecharno
= 0; /* reset global char number of line start */
5906 /* Only use generic regexps or those for the current language. */
5907 if (rp
->lang
!= NULL
&& rp
->lang
!= curfdp
->lang
)
5910 while (match
>= 0 && match
< filebuf
.len
)
5912 match
= re_search (rp
->pat
, buffer
, filebuf
.len
, charno
,
5913 filebuf
.len
- match
, &rp
->regs
);
5918 if (!rp
->error_signaled
)
5920 error ("regexp stack overflow while matching \"%s\"",
5922 rp
->error_signaled
= TRUE
;
5929 if (match
== rp
->regs
.end
[0])
5931 if (!rp
->error_signaled
)
5933 error ("regexp matches the empty string: \"%s\"",
5935 rp
->error_signaled
= TRUE
;
5937 match
= -3; /* exit from while loop */
5941 /* Match occurred. Construct a tag. */
5942 while (charno
< rp
->regs
.end
[0])
5943 if (buffer
[charno
++] == '\n')
5944 lineno
++, linecharno
= charno
;
5946 if (name
[0] == '\0')
5948 else /* make a named tag */
5949 name
= substitute (buffer
, rp
->name
, &rp
->regs
);
5950 if (rp
->force_explicit_name
)
5951 /* Force explicit tag name, if a name is there. */
5952 pfnote (name
, TRUE
, buffer
+ linecharno
,
5953 charno
- linecharno
+ 1, lineno
, linecharno
);
5955 make_tag (name
, strlen (name
), TRUE
, buffer
+ linecharno
,
5956 charno
- linecharno
+ 1, lineno
, linecharno
);
5965 nocase_tail (const char *cp
)
5967 register int len
= 0;
5969 while (*cp
!= '\0' && lowcase (*cp
) == lowcase (dbp
[len
]))
5971 if (*cp
== '\0' && !intoken (dbp
[len
]))
5980 get_tag (register char *bp
, char **namepp
)
5982 register char *cp
= bp
;
5986 /* Go till you get to white space or a syntactic break */
5987 for (cp
= bp
+ 1; !notinname (*cp
); cp
++)
5989 make_tag (bp
, cp
- bp
, TRUE
,
5990 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
5994 *namepp
= savenstr (bp
, cp
- bp
);
5998 * Read a line of text from `stream' into `lbp', excluding the
5999 * newline or CR-NL, if any. Return the number of characters read from
6000 * `stream', which is the length of the line including the newline.
6002 * On DOS or Windows we do not count the CR character, if any before the
6003 * NL, in the returned length; this mirrors the behavior of Emacs on those
6004 * platforms (for text files, it translates CR-NL to NL as it reads in the
6007 * If multi-line regular expressions are requested, each line read is
6008 * appended to `filebuf'.
6011 readline_internal (linebuffer
*lbp
, register FILE *stream
)
6013 char *buffer
= lbp
->buffer
;
6014 register char *p
= lbp
->buffer
;
6015 register char *pend
;
6018 pend
= p
+ lbp
->size
; /* Separate to avoid 386/IX compiler bug. */
6022 register int c
= getc (stream
);
6025 /* We're at the end of linebuffer: expand it. */
6027 xrnew (buffer
, lbp
->size
, char);
6028 p
+= buffer
- lbp
->buffer
;
6029 pend
= buffer
+ lbp
->size
;
6030 lbp
->buffer
= buffer
;
6040 if (p
> buffer
&& p
[-1] == '\r')
6044 /* Assume CRLF->LF translation will be performed by Emacs
6045 when loading this file, so CRs won't appear in the buffer.
6046 It would be cleaner to compensate within Emacs;
6047 however, Emacs does not know how many CRs were deleted
6048 before any given point in the file. */
6063 lbp
->len
= p
- buffer
;
6065 if (need_filebuf
/* we need filebuf for multi-line regexps */
6066 && chars_deleted
> 0) /* not at EOF */
6068 while (filebuf
.size
<= filebuf
.len
+ lbp
->len
+ 1) /* +1 for \n */
6070 /* Expand filebuf. */
6072 xrnew (filebuf
.buffer
, filebuf
.size
, char);
6074 strncpy (filebuf
.buffer
+ filebuf
.len
, lbp
->buffer
, lbp
->len
);
6075 filebuf
.len
+= lbp
->len
;
6076 filebuf
.buffer
[filebuf
.len
++] = '\n';
6077 filebuf
.buffer
[filebuf
.len
] = '\0';
6080 return lbp
->len
+ chars_deleted
;
6084 * Like readline_internal, above, but in addition try to match the
6085 * input line against relevant regular expressions and manage #line
6089 readline (linebuffer
*lbp
, FILE *stream
)
6093 linecharno
= charno
; /* update global char number of line start */
6094 result
= readline_internal (lbp
, stream
); /* read line */
6095 lineno
+= 1; /* increment global line number */
6096 charno
+= result
; /* increment global char number */
6098 /* Honor #line directives. */
6099 if (!no_line_directive
)
6101 static bool discard_until_line_directive
;
6103 /* Check whether this is a #line directive. */
6104 if (result
> 12 && strneq (lbp
->buffer
, "#line ", 6))
6109 if (sscanf (lbp
->buffer
, "#line %u \"%n", &lno
, &start
) >= 1
6110 && start
> 0) /* double quote character found */
6112 char *endp
= lbp
->buffer
+ start
;
6114 while ((endp
= etags_strchr (endp
, '"')) != NULL
6115 && endp
[-1] == '\\')
6118 /* Ok, this is a real #line directive. Let's deal with it. */
6120 char *taggedabsname
; /* absolute name of original file */
6121 char *taggedfname
; /* name of original file as given */
6122 char *name
; /* temp var */
6124 discard_until_line_directive
= FALSE
; /* found it */
6125 name
= lbp
->buffer
+ start
;
6127 canonicalize_filename (name
);
6128 taggedabsname
= absolute_filename (name
, tagfiledir
);
6129 if (filename_is_absolute (name
)
6130 || filename_is_absolute (curfdp
->infname
))
6131 taggedfname
= savestr (taggedabsname
);
6133 taggedfname
= relative_filename (taggedabsname
,tagfiledir
);
6135 if (streq (curfdp
->taggedfname
, taggedfname
))
6136 /* The #line directive is only a line number change. We
6137 deal with this afterwards. */
6140 /* The tags following this #line directive should be
6141 attributed to taggedfname. In order to do this, set
6142 curfdp accordingly. */
6144 fdesc
*fdp
; /* file description pointer */
6146 /* Go look for a file description already set up for the
6147 file indicated in the #line directive. If there is
6148 one, use it from now until the next #line
6150 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6151 if (streq (fdp
->infname
, curfdp
->infname
)
6152 && streq (fdp
->taggedfname
, taggedfname
))
6153 /* If we remove the second test above (after the &&)
6154 then all entries pertaining to the same file are
6155 coalesced in the tags file. If we use it, then
6156 entries pertaining to the same file but generated
6157 from different files (via #line directives) will
6158 go into separate sections in the tags file. These
6159 alternatives look equivalent. The first one
6160 destroys some apparently useless information. */
6166 /* Else, if we already tagged the real file, skip all
6167 input lines until the next #line directive. */
6168 if (fdp
== NULL
) /* not found */
6169 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6170 if (streq (fdp
->infabsname
, taggedabsname
))
6172 discard_until_line_directive
= TRUE
;
6176 /* Else create a new file description and use that from
6177 now on, until the next #line directive. */
6178 if (fdp
== NULL
) /* not found */
6181 fdhead
= xnew (1, fdesc
);
6182 *fdhead
= *curfdp
; /* copy curr. file description */
6184 fdhead
->infname
= savestr (curfdp
->infname
);
6185 fdhead
->infabsname
= savestr (curfdp
->infabsname
);
6186 fdhead
->infabsdir
= savestr (curfdp
->infabsdir
);
6187 fdhead
->taggedfname
= taggedfname
;
6188 fdhead
->usecharno
= FALSE
;
6189 fdhead
->prop
= NULL
;
6190 fdhead
->written
= FALSE
;
6194 free (taggedabsname
);
6196 readline (lbp
, stream
);
6198 } /* if a real #line directive */
6199 } /* if #line is followed by a number */
6200 } /* if line begins with "#line " */
6202 /* If we are here, no #line directive was found. */
6203 if (discard_until_line_directive
)
6207 /* Do a tail recursion on ourselves, thus discarding the contents
6208 of the line buffer. */
6209 readline (lbp
, stream
);
6213 discard_until_line_directive
= FALSE
;
6216 } /* if #line directives should be considered */
6223 /* Match against relevant regexps. */
6225 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
6227 /* Only use generic regexps or those for the current language.
6228 Also do not use multiline regexps, which is the job of
6229 regex_tag_multiline. */
6230 if ((rp
->lang
!= NULL
&& rp
->lang
!= fdhead
->lang
)
6234 match
= re_match (rp
->pat
, lbp
->buffer
, lbp
->len
, 0, &rp
->regs
);
6239 if (!rp
->error_signaled
)
6241 error ("regexp stack overflow while matching \"%s\"",
6243 rp
->error_signaled
= TRUE
;
6250 /* Empty string matched. */
6251 if (!rp
->error_signaled
)
6253 error ("regexp matches the empty string: \"%s\"", rp
->pattern
);
6254 rp
->error_signaled
= TRUE
;
6258 /* Match occurred. Construct a tag. */
6260 if (name
[0] == '\0')
6262 else /* make a named tag */
6263 name
= substitute (lbp
->buffer
, rp
->name
, &rp
->regs
);
6264 if (rp
->force_explicit_name
)
6265 /* Force explicit tag name, if a name is there. */
6266 pfnote (name
, TRUE
, lbp
->buffer
, match
, lineno
, linecharno
);
6268 make_tag (name
, strlen (name
), TRUE
,
6269 lbp
->buffer
, match
, lineno
, linecharno
);
6278 * Return a pointer to a space of size strlen(cp)+1 allocated
6279 * with xnew where the string CP has been copied.
6282 savestr (const char *cp
)
6284 return savenstr (cp
, strlen (cp
));
6288 * Return a pointer to a space of size LEN+1 allocated with xnew where
6289 * the string CP has been copied for at most the first LEN characters.
6292 savenstr (const char *cp
, int len
)
6296 dp
= xnew (len
+ 1, char);
6297 strncpy (dp
, cp
, len
);
6303 * Return the ptr in sp at which the character c last
6304 * appears; NULL if not found
6306 * Identical to POSIX strrchr, included for portability.
6309 etags_strrchr (register const char *sp
, register int c
)
6311 register const char *r
;
6323 * Return the ptr in sp at which the character c first
6324 * appears; NULL if not found
6326 * Identical to POSIX strchr, included for portability.
6329 etags_strchr (register const char *sp
, register int c
)
6340 * Compare two strings, ignoring case for alphabetic characters.
6342 * Same as BSD's strcasecmp, included for portability.
6345 etags_strcasecmp (register const char *s1
, register const char *s2
)
6348 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6349 ? lowcase (*s1
) == lowcase (*s2
)
6353 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6354 ? lowcase (*s1
) - lowcase (*s2
)
6359 * Compare two strings, ignoring case for alphabetic characters.
6360 * Stop after a given number of characters
6362 * Same as BSD's strncasecmp, included for portability.
6365 etags_strncasecmp (register const char *s1
, register const char *s2
, register int n
)
6367 while (*s1
!= '\0' && n
-- > 0
6368 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6369 ? lowcase (*s1
) == lowcase (*s2
)
6376 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6377 ? lowcase (*s1
) - lowcase (*s2
)
6381 /* Skip spaces (end of string is not space), return new pointer. */
6383 skip_spaces (char *cp
)
6385 while (iswhite (*cp
))
6390 /* Skip non spaces, except end of string, return new pointer. */
6392 skip_non_spaces (char *cp
)
6394 while (*cp
!= '\0' && !iswhite (*cp
))
6399 /* Print error message and exit. */
6401 fatal (const char *s1
, const char *s2
)
6404 exit (EXIT_FAILURE
);
6408 pfatal (const char *s1
)
6411 exit (EXIT_FAILURE
);
6415 suggest_asking_for_help (void)
6417 fprintf (stderr
, "\tTry `%s %s' for a complete list of options.\n",
6418 progname
, NO_LONG_OPTIONS
? "-h" : "--help");
6419 exit (EXIT_FAILURE
);
6422 /* Output a diagnostic with printf-style FORMAT and args. */
6424 error (const char *format
, ...)
6427 va_start (ap
, format
);
6428 fprintf (stderr
, "%s: ", progname
);
6429 vfprintf (stderr
, format
, ap
);
6430 fprintf (stderr
, "\n");
6434 /* Return a newly-allocated string whose contents
6435 concatenate those of s1, s2, s3. */
6437 concat (const char *s1
, const char *s2
, const char *s3
)
6439 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
6440 char *result
= xnew (len1
+ len2
+ len3
+ 1, char);
6442 strcpy (result
, s1
);
6443 strcpy (result
+ len1
, s2
);
6444 strcpy (result
+ len1
+ len2
, s3
);
6445 result
[len1
+ len2
+ len3
] = '\0';
6451 /* Does the same work as the system V getcwd, but does not need to
6452 guess the buffer size in advance. */
6458 char *path
= xnew (bufsize
, char);
6460 while (getcwd (path
, bufsize
) == NULL
)
6462 if (errno
!= ERANGE
)
6466 path
= xnew (bufsize
, char);
6469 canonicalize_filename (path
);
6472 #else /* not HAVE_GETCWD */
6475 char *p
, path
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
6479 for (p
= path
; *p
!= '\0'; p
++)
6485 return strdup (path
);
6486 #else /* not MSDOS */
6490 linebuffer_init (&path
);
6491 pipe
= (FILE *) popen ("pwd 2>/dev/null", "r");
6492 if (pipe
== NULL
|| readline_internal (&path
, pipe
) == 0)
6497 #endif /* not MSDOS */
6498 #endif /* not HAVE_GETCWD */
6501 /* Return a newly allocated string containing the file name of FILE
6502 relative to the absolute directory DIR (which should end with a slash). */
6504 relative_filename (char *file
, char *dir
)
6506 char *fp
, *dp
, *afn
, *res
;
6509 /* Find the common root of file and dir (with a trailing slash). */
6510 afn
= absolute_filename (file
, cwd
);
6513 while (*fp
++ == *dp
++)
6515 fp
--, dp
--; /* back to the first differing char */
6517 if (fp
== afn
&& afn
[0] != '/') /* cannot build a relative name */
6520 do /* look at the equal chars until '/' */
6524 /* Build a sequence of "../" strings for the resulting relative file name. */
6526 while ((dp
= etags_strchr (dp
+ 1, '/')) != NULL
)
6528 res
= xnew (3*i
+ strlen (fp
+ 1) + 1, char);
6531 strcat (res
, "../");
6533 /* Add the file name relative to the common root of file and dir. */
6534 strcat (res
, fp
+ 1);
6540 /* Return a newly allocated string containing the absolute file name
6541 of FILE given DIR (which should end with a slash). */
6543 absolute_filename (char *file
, char *dir
)
6545 char *slashp
, *cp
, *res
;
6547 if (filename_is_absolute (file
))
6548 res
= savestr (file
);
6550 /* We don't support non-absolute file names with a drive
6551 letter, like `d:NAME' (it's too much hassle). */
6552 else if (file
[1] == ':')
6553 fatal ("%s: relative file names with drive letters not supported", file
);
6556 res
= concat (dir
, file
, "");
6558 /* Delete the "/dirname/.." and "/." substrings. */
6559 slashp
= etags_strchr (res
, '/');
6560 while (slashp
!= NULL
&& slashp
[0] != '\0')
6562 if (slashp
[1] == '.')
6564 if (slashp
[2] == '.'
6565 && (slashp
[3] == '/' || slashp
[3] == '\0'))
6570 while (cp
>= res
&& !filename_is_absolute (cp
));
6572 cp
= slashp
; /* the absolute name begins with "/.." */
6574 /* Under MSDOS and NT we get `d:/NAME' as absolute
6575 file name, so the luser could say `d:/../NAME'.
6576 We silently treat this as `d:/NAME'. */
6577 else if (cp
[0] != '/')
6580 memmove (cp
, slashp
+ 3, strlen (slashp
+ 2));
6584 else if (slashp
[2] == '/' || slashp
[2] == '\0')
6586 memmove (slashp
, slashp
+ 2, strlen (slashp
+ 1));
6591 slashp
= etags_strchr (slashp
+ 1, '/');
6594 if (res
[0] == '\0') /* just a safety net: should never happen */
6597 return savestr ("/");
6603 /* Return a newly allocated string containing the absolute
6604 file name of dir where FILE resides given DIR (which should
6605 end with a slash). */
6607 absolute_dirname (char *file
, char *dir
)
6612 slashp
= etags_strrchr (file
, '/');
6614 return savestr (dir
);
6617 res
= absolute_filename (file
, dir
);
6623 /* Whether the argument string is an absolute file name. The argument
6624 string must have been canonicalized with canonicalize_filename. */
6626 filename_is_absolute (char *fn
)
6628 return (fn
[0] == '/'
6630 || (ISALPHA (fn
[0]) && fn
[1] == ':' && fn
[2] == '/')
6635 /* Downcase DOS drive letter and collapse separators into single slashes.
6638 canonicalize_filename (register char *fn
)
6644 /* Canonicalize drive letter case. */
6645 # define ISUPPER(c) isupper (CHAR (c))
6646 if (fn
[0] != '\0' && fn
[1] == ':' && ISUPPER (fn
[0]))
6647 fn
[0] = lowcase (fn
[0]);
6652 /* Collapse multiple separators into a single slash. */
6653 for (cp
= fn
; *cp
!= '\0'; cp
++, fn
++)
6657 while (cp
[1] == sep
)
6666 /* Initialize a linebuffer for use. */
6668 linebuffer_init (linebuffer
*lbp
)
6670 lbp
->size
= (DEBUG
) ? 3 : 200;
6671 lbp
->buffer
= xnew (lbp
->size
, char);
6672 lbp
->buffer
[0] = '\0';
6676 /* Set the minimum size of a string contained in a linebuffer. */
6678 linebuffer_setlen (linebuffer
*lbp
, int toksize
)
6680 while (lbp
->size
<= toksize
)
6683 xrnew (lbp
->buffer
, lbp
->size
, char);
6688 /* Like malloc but get fatal error if memory is exhausted. */
6690 xmalloc (size_t size
)
6692 PTR result
= (PTR
) malloc (size
);
6694 fatal ("virtual memory exhausted", (char *)NULL
);
6699 xrealloc (char *ptr
, size_t size
)
6701 PTR result
= (PTR
) realloc (ptr
, size
);
6703 fatal ("virtual memory exhausted", (char *)NULL
);
6709 * indent-tabs-mode: t
6712 * c-font-lock-extra-types: ("FILE" "bool" "language" "linebuffer" "fdesc" "node" "regexp")
6713 * c-file-style: "gnu"
6717 /* etags.c ends here */