1 /* Tags file maker to go with GNU Emacs -*- coding: latin-1 -*-
3 Copyright (C) 1984 The Regents of the University of California
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are
8 1. Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 2. Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the
14 3. Neither the name of the University nor the names of its
15 contributors may be used to endorse or promote products derived
16 from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS''
19 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
22 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
28 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 Copyright (C) 1984, 1987, 1988, 1989, 1993, 1994, 1995, 1998, 1999,
32 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
33 Free Software Foundation, Inc.
35 This file is not considered part of GNU Emacs.
37 This program is free software; you can redistribute it and/or modify
38 it under the terms of the GNU General Public License as published by
39 the Free Software Foundation; either version 3, or (at your option)
42 This program is distributed in the hope that it will be useful,
43 but WITHOUT ANY WARRANTY; without even the implied warranty of
44 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
45 GNU General Public License for more details.
47 You should have received a copy of the GNU General Public License
48 along with this program; see the file COPYING. If not, write to the
49 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
50 Boston, MA 02110-1301, USA. */
53 /* NB To comply with the above BSD license, copyright information is
54 reproduced in etc/ETAGS.README. That file should be updated when the
57 To the best of our knowledge, this code was originally based on the
58 ctags.c distributed with BSD4.2, which was copyrighted by the
59 University of California, as described above. */
64 * 1983 Ctags originally by Ken Arnold.
65 * 1984 Fortran added by Jim Kleckner.
66 * 1984 Ed Pelegri-Llopart added C typedefs.
67 * 1985 Emacs TAGS format by Richard Stallman.
68 * 1989 Sam Kendall added C++.
69 * 1992 Joseph B. Wells improved C and C++ parsing.
70 * 1993 Francesco Potortì reorganised C and C++.
71 * 1994 Line-by-line regexp tags by Tom Tromey.
72 * 2001 Nested classes by Francesco Potortì (concept by Mykola Dzyuba).
73 * 2002 #line directives by Francesco Potortì.
75 * Francesco Potortì <pot@gnu.org> has maintained and improved it since 1993.
79 * If you want to add support for a new language, start by looking at the LUA
80 * language, which is the simplest. Alternatively, consider shipping a
81 * configuration file containing regexp definitions for etags.
84 char pot_etags_version
[] = "@(#) pot revision number is 17.26";
94 # define NDEBUG /* disable assert */
99 /* On some systems, Emacs defines static as nothing for the sake
100 of unexec. We don't want that here since we don't use unexec. */
102 # ifndef PTR /* for XEmacs */
105 # ifndef __P /* for XEmacs */
106 # define __P(args) args
108 #else /* no config.h */
109 # if defined(__STDC__) && (__STDC__ || defined(__SUNPRO_C))
110 # define __P(args) args /* use prototypes */
111 # define PTR void * /* for generic pointers */
112 # else /* not standard C */
113 # define __P(args) () /* no prototypes */
114 # define const /* remove const for old compilers' sake */
115 # define PTR long * /* don't use void* */
117 #endif /* !HAVE_CONFIG_H */
120 # define _GNU_SOURCE 1 /* enables some compiler checks on GNU */
123 /* WIN32_NATIVE is for XEmacs.
124 MSDOS, WINDOWSNT, DOS_NT are for Emacs. */
129 #endif /* WIN32_NATIVE */
135 # include <sys/param.h>
137 # ifndef HAVE_CONFIG_H
139 # include <sys/config.h>
151 # define MAXPATHLEN _MAX_PATH
157 # endif /* undef HAVE_GETCWD */
158 #else /* not WINDOWSNT */
162 # else /* no standard C headers */
163 extern char *getenv ();
165 # define EXIT_SUCCESS 1
166 # define EXIT_FAILURE 0
168 # define EXIT_SUCCESS 0
169 # define EXIT_FAILURE 1
172 #endif /* !WINDOWSNT */
177 # if defined (HAVE_GETCWD) && !defined (WINDOWSNT)
178 extern char *getcwd (char *buf
, size_t size
);
180 #endif /* HAVE_UNISTD_H */
188 #include <sys/types.h>
189 #include <sys/stat.h>
193 # undef assert /* some systems have a buggy assert.h */
194 # define assert(x) ((void) 0)
197 #if !defined (S_ISREG) && defined (S_IFREG)
198 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
201 #ifdef NO_LONG_OPTIONS /* define this if you don't have GNU getopt */
202 # define NO_LONG_OPTIONS TRUE
203 # define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr)
205 extern int optind
, opterr
;
207 # define NO_LONG_OPTIONS FALSE
209 #endif /* NO_LONG_OPTIONS */
211 #ifndef HAVE_CONFIG_H /* this is a standalone compilation */
212 # ifdef __CYGWIN__ /* compiling on Cygwin */
214 the regex
.h distributed with Cygwin is
not compatible with etags
, alas
!
215 If you want regular expression support
, you should
delete this notice
and
216 arrange to use the GNU regex
.h
and regex
.c
.
221 /* Define CTAGS to make the program "ctags" compatible with the usual one.
222 Leave it undefined to make the program "etags", which makes emacs-style
223 tag tables and tags typedefs, #defines and struct/union/enum by default. */
231 #define streq(s,t) (assert((s)!=NULL || (t)!=NULL), !strcmp (s, t))
232 #define strcaseeq(s,t) (assert((s)!=NULL && (t)!=NULL), !etags_strcasecmp (s, t))
233 #define strneq(s,t,n) (assert((s)!=NULL || (t)!=NULL), !strncmp (s, t, n))
234 #define strncaseeq(s,t,n) (assert((s)!=NULL && (t)!=NULL), !etags_strncasecmp (s, t, n))
236 #define CHARS 256 /* 2^sizeof(char) */
237 #define CHAR(x) ((unsigned int)(x) & (CHARS - 1))
238 #define iswhite(c) (_wht[CHAR(c)]) /* c is white (see white) */
239 #define notinname(c) (_nin[CHAR(c)]) /* c is not in a name (see nonam) */
240 #define begtoken(c) (_btk[CHAR(c)]) /* c can start token (see begtk) */
241 #define intoken(c) (_itk[CHAR(c)]) /* c can be in token (see midtk) */
242 #define endtoken(c) (_etk[CHAR(c)]) /* c ends tokens (see endtk) */
244 #define ISALNUM(c) isalnum (CHAR(c))
245 #define ISALPHA(c) isalpha (CHAR(c))
246 #define ISDIGIT(c) isdigit (CHAR(c))
247 #define ISLOWER(c) islower (CHAR(c))
249 #define lowcase(c) tolower (CHAR(c))
250 #define upcase(c) toupper (CHAR(c))
254 * xnew, xrnew -- allocate, reallocate storage
256 * SYNOPSIS: Type *xnew (int n, Type);
257 * void xrnew (OldPointer, int n, Type);
260 # include "chkmalloc.h"
261 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \
262 (n) * sizeof (Type)))
263 # define xrnew(op,n,Type) ((op) = (Type *) trace_realloc (__FILE__, __LINE__, \
264 (char *) (op), (n) * sizeof (Type)))
266 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
267 # define xrnew(op,n,Type) ((op) = (Type *) xrealloc ( \
268 (char *) (op), (n) * sizeof (Type)))
273 typedef void Lang_function
__P((FILE *));
277 char *suffix
; /* file name suffix for this compressor */
278 char *command
; /* takes one arg and decompresses to stdout */
283 char *name
; /* language name */
284 char *help
; /* detailed help for the language */
285 Lang_function
*function
; /* parse function */
286 char **suffixes
; /* name suffixes of this language's files */
287 char **filenames
; /* names of this language's files */
288 char **interpreters
; /* interpreters for this language */
289 bool metasource
; /* source used to generate other sources */
294 struct fdesc
*next
; /* for the linked list */
295 char *infname
; /* uncompressed input file name */
296 char *infabsname
; /* absolute uncompressed input file name */
297 char *infabsdir
; /* absolute dir of input file */
298 char *taggedfname
; /* file name to write in tagfile */
299 language
*lang
; /* language of file */
300 char *prop
; /* file properties to write in tagfile */
301 bool usecharno
; /* etags tags shall contain char number */
302 bool written
; /* entry written in the tags file */
305 typedef struct node_st
306 { /* sorting structure */
307 struct node_st
*left
, *right
; /* left and right sons */
308 fdesc
*fdp
; /* description of file to whom tag belongs */
309 char *name
; /* tag name */
310 char *regex
; /* search regexp */
311 bool valid
; /* write this tag on the tag file */
312 bool is_func
; /* function tag: use regexp in CTAGS mode */
313 bool been_warned
; /* warning already given for duplicated tag */
314 int lno
; /* line number tag is on */
315 long cno
; /* character number line starts on */
319 * A `linebuffer' is a structure which holds a line of text.
320 * `readline_internal' reads a line from a stream into a linebuffer
321 * and works regardless of the length of the line.
322 * SIZE is the size of BUFFER, LEN is the length of the string in
323 * BUFFER after readline reads it.
332 /* Used to support mixing of --lang and file names. */
336 at_language
, /* a language specification */
337 at_regexp
, /* a regular expression */
338 at_filename
, /* a file name */
339 at_stdin
, /* read from stdin here */
340 at_end
/* stop parsing the list */
341 } arg_type
; /* argument type */
342 language
*lang
; /* language associated with the argument */
343 char *what
; /* the argument itself */
346 /* Structure defining a regular expression. */
347 typedef struct regexp
349 struct regexp
*p_next
; /* pointer to next in list */
350 language
*lang
; /* if set, use only for this language */
351 char *pattern
; /* the regexp pattern */
352 char *name
; /* tag name */
353 struct re_pattern_buffer
*pat
; /* the compiled pattern */
354 struct re_registers regs
; /* re registers */
355 bool error_signaled
; /* already signaled for this regexp */
356 bool force_explicit_name
; /* do not allow implict tag name */
357 bool ignore_case
; /* ignore case when matching */
358 bool multi_line
; /* do a multi-line match on the whole file */
362 /* Many compilers barf on this:
363 Lang_function Ada_funcs;
364 so let's write it this way */
365 static void Ada_funcs
__P((FILE *));
366 static void Asm_labels
__P((FILE *));
367 static void C_entries
__P((int c_ext
, FILE *));
368 static void default_C_entries
__P((FILE *));
369 static void plain_C_entries
__P((FILE *));
370 static void Cjava_entries
__P((FILE *));
371 static void Cobol_paragraphs
__P((FILE *));
372 static void Cplusplus_entries
__P((FILE *));
373 static void Cstar_entries
__P((FILE *));
374 static void Erlang_functions
__P((FILE *));
375 static void Forth_words
__P((FILE *));
376 static void Fortran_functions
__P((FILE *));
377 static void HTML_labels
__P((FILE *));
378 static void Lisp_functions
__P((FILE *));
379 static void Lua_functions
__P((FILE *));
380 static void Makefile_targets
__P((FILE *));
381 static void Pascal_functions
__P((FILE *));
382 static void Perl_functions
__P((FILE *));
383 static void PHP_functions
__P((FILE *));
384 static void PS_functions
__P((FILE *));
385 static void Prolog_functions
__P((FILE *));
386 static void Python_functions
__P((FILE *));
387 static void Scheme_functions
__P((FILE *));
388 static void TeX_commands
__P((FILE *));
389 static void Texinfo_nodes
__P((FILE *));
390 static void Yacc_entries
__P((FILE *));
391 static void just_read_file
__P((FILE *));
393 static void print_language_names
__P((void));
394 static void print_version
__P((void));
395 static void print_help
__P((argument
*));
396 int main
__P((int, char **));
398 static compressor
*get_compressor_from_suffix
__P((char *, char **));
399 static language
*get_language_from_langname
__P((const char *));
400 static language
*get_language_from_interpreter
__P((char *));
401 static language
*get_language_from_filename
__P((char *, bool));
402 static void readline
__P((linebuffer
*, FILE *));
403 static long readline_internal
__P((linebuffer
*, FILE *));
404 static bool nocase_tail
__P((char *));
405 static void get_tag
__P((char *, char **));
407 static void analyse_regex
__P((char *));
408 static void free_regexps
__P((void));
409 static void regex_tag_multiline
__P((void));
410 static void error
__P((const char *, const char *));
411 static void suggest_asking_for_help
__P((void));
412 void fatal
__P((char *, char *));
413 static void pfatal
__P((char *));
414 static void add_node
__P((node
*, node
**));
416 static void init
__P((void));
417 static void process_file_name
__P((char *, language
*));
418 static void process_file
__P((FILE *, char *, language
*));
419 static void find_entries
__P((FILE *));
420 static void free_tree
__P((node
*));
421 static void free_fdesc
__P((fdesc
*));
422 static void pfnote
__P((char *, bool, char *, int, int, long));
423 static void make_tag
__P((char *, int, bool, char *, int, int, long));
424 static void invalidate_nodes
__P((fdesc
*, node
**));
425 static void put_entries
__P((node
*));
427 static char *concat
__P((char *, char *, char *));
428 static char *skip_spaces
__P((char *));
429 static char *skip_non_spaces
__P((char *));
430 static char *savenstr
__P((char *, int));
431 static char *savestr
__P((char *));
432 static char *etags_strchr
__P((const char *, int));
433 static char *etags_strrchr
__P((const char *, int));
434 static int etags_strcasecmp
__P((const char *, const char *));
435 static int etags_strncasecmp
__P((const char *, const char *, int));
436 static char *etags_getcwd
__P((void));
437 static char *relative_filename
__P((char *, char *));
438 static char *absolute_filename
__P((char *, char *));
439 static char *absolute_dirname
__P((char *, char *));
440 static bool filename_is_absolute
__P((char *f
));
441 static void canonicalize_filename
__P((char *));
442 static void linebuffer_init
__P((linebuffer
*));
443 static void linebuffer_setlen
__P((linebuffer
*, int));
444 static PTR xmalloc
__P((unsigned int));
445 static PTR xrealloc
__P((char *, unsigned int));
448 static char searchar
= '/'; /* use /.../ searches */
450 static char *tagfile
; /* output file */
451 static char *progname
; /* name this program was invoked with */
452 static char *cwd
; /* current working directory */
453 static char *tagfiledir
; /* directory of tagfile */
454 static FILE *tagf
; /* ioptr for tags file */
456 static fdesc
*fdhead
; /* head of file description list */
457 static fdesc
*curfdp
; /* current file description */
458 static int lineno
; /* line number of current line */
459 static long charno
; /* current character number */
460 static long linecharno
; /* charno of start of current line */
461 static char *dbp
; /* pointer to start of current tag */
463 static const int invalidcharno
= -1;
465 static node
*nodehead
; /* the head of the binary tree of tags */
466 static node
*last_node
; /* the last node created */
468 static linebuffer lb
; /* the current line */
469 static linebuffer filebuf
; /* a buffer containing the whole file */
470 static linebuffer token_name
; /* a buffer containing a tag name */
472 /* boolean "functions" (see init) */
473 static bool _wht
[CHARS
], _nin
[CHARS
], _itk
[CHARS
], _btk
[CHARS
], _etk
[CHARS
];
476 *white
= " \f\t\n\r\v",
478 *nonam
= " \f\t\n\r()=,;", /* look at make_tag before modifying! */
479 /* token ending chars */
480 *endtk
= " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?",
481 /* token starting chars */
482 *begtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@",
483 /* valid in-token chars */
484 *midtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
486 static bool append_to_tagfile
; /* -a: append to tags */
487 /* The next four default to TRUE for etags, but to FALSE for ctags. */
488 static bool typedefs
; /* -t: create tags for C and Ada typedefs */
489 static bool typedefs_or_cplusplus
; /* -T: create tags for C typedefs, level */
490 /* 0 struct/enum/union decls, and C++ */
491 /* member functions. */
492 static bool constantypedefs
; /* -d: create tags for C #define, enum */
493 /* constants and variables. */
494 /* -D: opposite of -d. Default under ctags. */
495 static bool globals
; /* create tags for global variables */
496 static bool members
; /* create tags for C member variables */
497 static bool declarations
; /* --declarations: tag them and extern in C&Co*/
498 static bool no_line_directive
; /* ignore #line directives (undocumented) */
499 static bool no_duplicates
; /* no duplicate tags for ctags (undocumented) */
500 static bool update
; /* -u: update tags */
501 static bool vgrind_style
; /* -v: create vgrind style index output */
502 static bool no_warnings
; /* -w: suppress warnings (undocumented) */
503 static bool cxref_style
; /* -x: create cxref style output */
504 static bool cplusplus
; /* .[hc] means C++, not C (undocumented) */
505 static bool ignoreindent
; /* -I: ignore indentation in C */
506 static bool packages_only
; /* --packages-only: in Ada, only tag packages*/
508 /* STDIN is defined in LynxOS system headers */
513 #define STDIN 0x1001 /* returned by getopt_long on --parse-stdin */
514 static bool parsing_stdin
; /* --parse-stdin used */
516 static regexp
*p_head
; /* list of all regexps */
517 static bool need_filebuf
; /* some regexes are multi-line */
519 static struct option longopts
[] =
521 { "append", no_argument
, NULL
, 'a' },
522 { "packages-only", no_argument
, &packages_only
, TRUE
},
523 { "c++", no_argument
, NULL
, 'C' },
524 { "declarations", no_argument
, &declarations
, TRUE
},
525 { "no-line-directive", no_argument
, &no_line_directive
, TRUE
},
526 { "no-duplicates", no_argument
, &no_duplicates
, TRUE
},
527 { "help", no_argument
, NULL
, 'h' },
528 { "help", no_argument
, NULL
, 'H' },
529 { "ignore-indentation", no_argument
, NULL
, 'I' },
530 { "language", required_argument
, NULL
, 'l' },
531 { "members", no_argument
, &members
, TRUE
},
532 { "no-members", no_argument
, &members
, FALSE
},
533 { "output", required_argument
, NULL
, 'o' },
534 { "regex", required_argument
, NULL
, 'r' },
535 { "no-regex", no_argument
, NULL
, 'R' },
536 { "ignore-case-regex", required_argument
, NULL
, 'c' },
537 { "parse-stdin", required_argument
, NULL
, STDIN
},
538 { "version", no_argument
, NULL
, 'V' },
540 #if CTAGS /* Ctags options */
541 { "backward-search", no_argument
, NULL
, 'B' },
542 { "cxref", no_argument
, NULL
, 'x' },
543 { "defines", no_argument
, NULL
, 'd' },
544 { "globals", no_argument
, &globals
, TRUE
},
545 { "typedefs", no_argument
, NULL
, 't' },
546 { "typedefs-and-c++", no_argument
, NULL
, 'T' },
547 { "update", no_argument
, NULL
, 'u' },
548 { "vgrind", no_argument
, NULL
, 'v' },
549 { "no-warn", no_argument
, NULL
, 'w' },
551 #else /* Etags options */
552 { "no-defines", no_argument
, NULL
, 'D' },
553 { "no-globals", no_argument
, &globals
, FALSE
},
554 { "include", required_argument
, NULL
, 'i' },
559 static compressor compressors
[] =
561 { "z", "gzip -d -c"},
562 { "Z", "gzip -d -c"},
563 { "gz", "gzip -d -c"},
564 { "GZ", "gzip -d -c"},
565 { "bz2", "bzip2 -d -c" },
574 static char *Ada_suffixes
[] =
575 { "ads", "adb", "ada", NULL
};
576 static char Ada_help
[] =
577 "In Ada code, functions, procedures, packages, tasks and types are\n\
578 tags. Use the `--packages-only' option to create tags for\n\
580 Ada tag names have suffixes indicating the type of entity:\n\
581 Entity type: Qualifier:\n\
582 ------------ ----------\n\
589 Thus, `M-x find-tag <RET> bidule/b <RET>' will go directly to the\n\
590 body of the package `bidule', while `M-x find-tag <RET> bidule <RET>'\n\
591 will just search for any tag `bidule'.";
594 static char *Asm_suffixes
[] =
595 { "a", /* Unix assembler */
596 "asm", /* Microcontroller assembly */
597 "def", /* BSO/Tasking definition includes */
598 "inc", /* Microcontroller include files */
599 "ins", /* Microcontroller include files */
600 "s", "sa", /* Unix assembler */
601 "S", /* cpp-processed Unix assembler */
602 "src", /* BSO/Tasking C compiler output */
605 static char Asm_help
[] =
606 "In assembler code, labels appearing at the beginning of a line,\n\
607 followed by a colon, are tags.";
610 /* Note that .c and .h can be considered C++, if the --c++ flag was
611 given, or if the `class' or `template' keywords are met inside the file.
612 That is why default_C_entries is called for these. */
613 static char *default_C_suffixes
[] =
615 #if CTAGS /* C help for Ctags */
616 static char default_C_help
[] =
617 "In C code, any C function is a tag. Use -t to tag typedefs.\n\
618 Use -T to tag definitions of `struct', `union' and `enum'.\n\
619 Use -d to tag `#define' macro definitions and `enum' constants.\n\
620 Use --globals to tag global variables.\n\
621 You can tag function declarations and external variables by\n\
622 using `--declarations', and struct members by using `--members'.";
623 #else /* C help for Etags */
624 static char default_C_help
[] =
625 "In C code, any C function or typedef is a tag, and so are\n\
626 definitions of `struct', `union' and `enum'. `#define' macro\n\
627 definitions and `enum' constants are tags unless you specify\n\
628 `--no-defines'. Global variables are tags unless you specify\n\
629 `--no-globals'. Use of `--no-globals' and `--no-defines'\n\
630 can make the tags table file much smaller.\n\
631 You can tag function declarations and external variables by\n\
632 using `--declarations', and struct members by using `--members'.";
633 #endif /* C help for Ctags and Etags */
635 static char *Cplusplus_suffixes
[] =
636 { "C", "c++", "cc", "cpp", "cxx", "H", "h++", "hh", "hpp", "hxx",
637 "M", /* Objective C++ */
638 "pdb", /* Postscript with C syntax */
640 static char Cplusplus_help
[] =
641 "In C++ code, all the tag constructs of C code are tagged. (Use\n\
642 --help --lang=c --lang=c++ for full help.)\n\
643 In addition to C tags, member functions are also recognized. Member\n\
644 variables are also recognized if you use the `--members' option.\n\
645 Tags for variables and functions in classes are named `CLASS::VARIABLE'\n\
646 and `CLASS::FUNCTION'. `operator' definitions have tag names like\n\
649 static char *Cjava_suffixes
[] =
651 static char Cjava_help
[] =
652 "In Java code, all the tags constructs of C and C++ code are\n\
653 tagged. (Use --help --lang=c --lang=c++ --lang=java for full help.)";
656 static char *Cobol_suffixes
[] =
657 { "COB", "cob", NULL
};
658 static char Cobol_help
[] =
659 "In Cobol code, tags are paragraph names; that is, any word\n\
660 starting in column 8 and followed by a period.";
662 static char *Cstar_suffixes
[] =
663 { "cs", "hs", NULL
};
665 static char *Erlang_suffixes
[] =
666 { "erl", "hrl", NULL
};
667 static char Erlang_help
[] =
668 "In Erlang code, the tags are the functions, records and macros\n\
669 defined in the file.";
671 char *Forth_suffixes
[] =
672 { "fth", "tok", NULL
};
673 static char Forth_help
[] =
674 "In Forth code, tags are words defined by `:',\n\
675 constant, code, create, defer, value, variable, buffer:, field.";
677 static char *Fortran_suffixes
[] =
678 { "F", "f", "f90", "for", NULL
};
679 static char Fortran_help
[] =
680 "In Fortran code, functions, subroutines and block data are tags.";
682 static char *HTML_suffixes
[] =
683 { "htm", "html", "shtml", NULL
};
684 static char HTML_help
[] =
685 "In HTML input files, the tags are the `title' and the `h1', `h2',\n\
686 `h3' headers. Also, tags are `name=' in anchors and all\n\
687 occurrences of `id='.";
689 static char *Lisp_suffixes
[] =
690 { "cl", "clisp", "el", "l", "lisp", "LSP", "lsp", "ml", NULL
};
691 static char Lisp_help
[] =
692 "In Lisp code, any function defined with `defun', any variable\n\
693 defined with `defvar' or `defconst', and in general the first\n\
694 argument of any expression that starts with `(def' in column zero\n\
697 static char *Lua_suffixes
[] =
698 { "lua", "LUA", NULL
};
699 static char Lua_help
[] =
700 "In Lua scripts, all functions are tags.";
702 static char *Makefile_filenames
[] =
703 { "Makefile", "makefile", "GNUMakefile", "Makefile.in", "Makefile.am", NULL
};
704 static char Makefile_help
[] =
705 "In makefiles, targets are tags; additionally, variables are tags\n\
706 unless you specify `--no-globals'.";
708 static char *Objc_suffixes
[] =
709 { "lm", /* Objective lex file */
710 "m", /* Objective C file */
712 static char Objc_help
[] =
713 "In Objective C code, tags include Objective C definitions for classes,\n\
714 class categories, methods and protocols. Tags for variables and\n\
715 functions in classes are named `CLASS::VARIABLE' and `CLASS::FUNCTION'.\n\
716 (Use --help --lang=c --lang=objc --lang=java for full help.)";
718 static char *Pascal_suffixes
[] =
719 { "p", "pas", NULL
};
720 static char Pascal_help
[] =
721 "In Pascal code, the tags are the functions and procedures defined\n\
723 /* " // this is for working around an Emacs highlighting bug... */
725 static char *Perl_suffixes
[] =
726 { "pl", "pm", NULL
};
727 static char *Perl_interpreters
[] =
728 { "perl", "@PERL@", NULL
};
729 static char Perl_help
[] =
730 "In Perl code, the tags are the packages, subroutines and variables\n\
731 defined by the `package', `sub', `my' and `local' keywords. Use\n\
732 `--globals' if you want to tag global variables. Tags for\n\
733 subroutines are named `PACKAGE::SUB'. The name for subroutines\n\
734 defined in the default package is `main::SUB'.";
736 static char *PHP_suffixes
[] =
737 { "php", "php3", "php4", NULL
};
738 static char PHP_help
[] =
739 "In PHP code, tags are functions, classes and defines. When using\n\
740 the `--members' option, vars are tags too.";
742 static char *plain_C_suffixes
[] =
743 { "pc", /* Pro*C file */
746 static char *PS_suffixes
[] =
747 { "ps", "psw", NULL
}; /* .psw is for PSWrap */
748 static char PS_help
[] =
749 "In PostScript code, the tags are the functions.";
751 static char *Prolog_suffixes
[] =
753 static char Prolog_help
[] =
754 "In Prolog code, tags are predicates and rules at the beginning of\n\
757 static char *Python_suffixes
[] =
759 static char Python_help
[] =
760 "In Python code, `def' or `class' at the beginning of a line\n\
763 /* Can't do the `SCM' or `scm' prefix with a version number. */
764 static char *Scheme_suffixes
[] =
765 { "oak", "sch", "scheme", "SCM", "scm", "SM", "sm", "ss", "t", NULL
};
766 static char Scheme_help
[] =
767 "In Scheme code, tags include anything defined with `def' or with a\n\
768 construct whose name starts with `def'. They also include\n\
769 variables set with `set!' at top level in the file.";
771 static char *TeX_suffixes
[] =
772 { "bib", "clo", "cls", "ltx", "sty", "TeX", "tex", NULL
};
773 static char TeX_help
[] =
774 "In LaTeX text, the argument of any of the commands `\\chapter',\n\
775 `\\section', `\\subsection', `\\subsubsection', `\\eqno', `\\label',\n\
776 `\\ref', `\\cite', `\\bibitem', `\\part', `\\appendix', `\\entry',\n\
777 `\\index', `\\def', `\\newcommand', `\\renewcommand',\n\
778 `\\newenvironment' or `\\renewenvironment' is a tag.\n\
780 Other commands can be specified by setting the environment variable\n\
781 `TEXTAGS' to a colon-separated list like, for example,\n\
782 TEXTAGS=\"mycommand:myothercommand\".";
785 static char *Texinfo_suffixes
[] =
786 { "texi", "texinfo", "txi", NULL
};
787 static char Texinfo_help
[] =
788 "for texinfo files, lines starting with @node are tagged.";
790 static char *Yacc_suffixes
[] =
791 { "y", "y++", "ym", "yxx", "yy", NULL
}; /* .ym is Objective yacc file */
792 static char Yacc_help
[] =
793 "In Bison or Yacc input files, each rule defines as a tag the\n\
794 nonterminal it constructs. The portions of the file that contain\n\
795 C code are parsed as C code (use --help --lang=c --lang=yacc\n\
798 static char auto_help
[] =
799 "`auto' is not a real language, it indicates to use\n\
800 a default language for files base on file name suffix and file contents.";
802 static char none_help
[] =
803 "`none' is not a real language, it indicates to only do\n\
804 regexp processing on files.";
806 static char no_lang_help
[] =
807 "No detailed help available for this language.";
811 * Table of languages.
813 * It is ok for a given function to be listed under more than one
814 * name. I just didn't.
817 static language lang_names
[] =
819 { "ada", Ada_help
, Ada_funcs
, Ada_suffixes
},
820 { "asm", Asm_help
, Asm_labels
, Asm_suffixes
},
821 { "c", default_C_help
, default_C_entries
, default_C_suffixes
},
822 { "c++", Cplusplus_help
, Cplusplus_entries
, Cplusplus_suffixes
},
823 { "c*", no_lang_help
, Cstar_entries
, Cstar_suffixes
},
824 { "cobol", Cobol_help
, Cobol_paragraphs
, Cobol_suffixes
},
825 { "erlang", Erlang_help
, Erlang_functions
, Erlang_suffixes
},
826 { "forth", Forth_help
, Forth_words
, Forth_suffixes
},
827 { "fortran", Fortran_help
, Fortran_functions
, Fortran_suffixes
},
828 { "html", HTML_help
, HTML_labels
, HTML_suffixes
},
829 { "java", Cjava_help
, Cjava_entries
, Cjava_suffixes
},
830 { "lisp", Lisp_help
, Lisp_functions
, Lisp_suffixes
},
831 { "lua", Lua_help
, Lua_functions
, Lua_suffixes
},
832 { "makefile", Makefile_help
,Makefile_targets
,NULL
,Makefile_filenames
},
833 { "objc", Objc_help
, plain_C_entries
, Objc_suffixes
},
834 { "pascal", Pascal_help
, Pascal_functions
, Pascal_suffixes
},
835 { "perl",Perl_help
,Perl_functions
,Perl_suffixes
,NULL
,Perl_interpreters
},
836 { "php", PHP_help
, PHP_functions
, PHP_suffixes
},
837 { "postscript",PS_help
, PS_functions
, PS_suffixes
},
838 { "proc", no_lang_help
, plain_C_entries
, plain_C_suffixes
},
839 { "prolog", Prolog_help
, Prolog_functions
, Prolog_suffixes
},
840 { "python", Python_help
, Python_functions
, Python_suffixes
},
841 { "scheme", Scheme_help
, Scheme_functions
, Scheme_suffixes
},
842 { "tex", TeX_help
, TeX_commands
, TeX_suffixes
},
843 { "texinfo", Texinfo_help
, Texinfo_nodes
, Texinfo_suffixes
},
844 { "yacc", Yacc_help
,Yacc_entries
,Yacc_suffixes
,NULL
,NULL
,TRUE
},
845 { "auto", auto_help
}, /* default guessing scheme */
846 { "none", none_help
, just_read_file
}, /* regexp matching only */
847 { NULL
} /* end of list */
852 print_language_names ()
857 puts ("\nThese are the currently supported languages, along with the\n\
858 default file names and dot suffixes:");
859 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
861 printf (" %-*s", 10, lang
->name
);
862 if (lang
->filenames
!= NULL
)
863 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
864 printf (" %s", *name
);
865 if (lang
->suffixes
!= NULL
)
866 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
867 printf (" .%s", *ext
);
870 puts ("where `auto' means use default language for files based on file\n\
871 name suffix, and `none' means only do regexp processing on files.\n\
872 If no language is specified and no matching suffix is found,\n\
873 the first line of the file is read for a sharp-bang (#!) sequence\n\
874 followed by the name of an interpreter. If no such sequence is found,\n\
875 Fortran is tried first; if no tags are found, C is tried next.\n\
876 When parsing any C file, a \"class\" or \"template\" keyword\n\
878 puts ("Compressed files are supported using gzip and bzip2.\n\
880 For detailed help on a given language use, for example,\n\
881 etags --help --lang=ada.");
885 # define EMACS_NAME "standalone"
888 # define VERSION "17.26"
893 printf ("%s (%s %s)\n", (CTAGS
) ? "ctags" : "etags", EMACS_NAME
, VERSION
);
894 puts ("Copyright (C) 2008 Free Software Foundation, Inc.");
895 puts ("This program is distributed under the terms in ETAGS.README");
901 print_help (argbuffer
)
904 bool help_for_lang
= FALSE
;
906 for (; argbuffer
->arg_type
!= at_end
; argbuffer
++)
907 if (argbuffer
->arg_type
== at_language
)
911 puts (argbuffer
->lang
->help
);
912 help_for_lang
= TRUE
;
918 printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\
920 These are the options accepted by %s.\n", progname
, progname
);
922 puts ("WARNING: long option names do not work with this executable,\n\
923 as it is not linked with GNU getopt.");
925 puts ("You may use unambiguous abbreviations for the long option names.");
926 puts (" A - as file name means read names from stdin (one per line).\n\
927 Absolute names are stored in the output file as they are.\n\
928 Relative ones are stored relative to the output file's directory.\n");
930 puts ("-a, --append\n\
931 Append tag entries to existing tags file.");
933 puts ("--packages-only\n\
934 For Ada files, only generate tags for packages.");
937 puts ("-B, --backward-search\n\
938 Write the search commands for the tag entries using '?', the\n\
939 backward-search command instead of '/', the forward-search command.");
941 /* This option is mostly obsolete, because etags can now automatically
942 detect C++. Retained for backward compatibility and for debugging and
943 experimentation. In principle, we could want to tag as C++ even
944 before any "class" or "template" keyword.
946 Treat files whose name suffix defaults to C language as C++ files.");
949 puts ("--declarations\n\
950 In C and derived languages, create tags for function declarations,");
952 puts ("\tand create tags for extern variables if --globals is used.");
955 ("\tand create tags for extern variables unless --no-globals is used.");
958 puts ("-d, --defines\n\
959 Create tag entries for C #define constants and enum constants, too.");
961 puts ("-D, --no-defines\n\
962 Don't create tag entries for C #define constants and enum constants.\n\
963 This makes the tags file smaller.");
966 puts ("-i FILE, --include=FILE\n\
967 Include a note in tag file indicating that, when searching for\n\
968 a tag, one should also consult the tags file FILE after\n\
969 checking the current file.");
971 puts ("-l LANG, --language=LANG\n\
972 Force the following files to be considered as written in the\n\
973 named language up to the next --language=LANG option.");
977 Create tag entries for global variables in some languages.");
979 puts ("--no-globals\n\
980 Do not create tag entries for global variables in some\n\
981 languages. This makes the tags file smaller.");
983 Create tag entries for members of structures in some languages.");
985 puts ("-r REGEXP, --regex=REGEXP or --regex=@regexfile\n\
986 Make a tag for each line matching a regular expression pattern\n\
987 in the following files. {LANGUAGE}REGEXP uses REGEXP for LANGUAGE\n\
988 files only. REGEXFILE is a file containing one REGEXP per line.\n\
989 REGEXP takes the form /TAGREGEXP/TAGNAME/MODS, where TAGNAME/ is\n\
990 optional. The TAGREGEXP pattern is anchored (as if preceded by ^).");
991 puts (" If TAGNAME/ is present, the tags created are named.\n\
992 For example Tcl named tags can be created with:\n\
993 --regex=\"/proc[ \\t]+\\([^ \\t]+\\)/\\1/.\".\n\
994 MODS are optional one-letter modifiers: `i' means to ignore case,\n\
995 `m' means to allow multi-line matches, `s' implies `m' and\n\
996 causes dot to match any character, including newline.");
997 puts ("-R, --no-regex\n\
998 Don't create tags from regexps for the following files.");
999 puts ("-I, --ignore-indentation\n\
1000 In C and C++ do not assume that a closing brace in the first\n\
1001 column is the final brace of a function or structure definition.");
1002 puts ("-o FILE, --output=FILE\n\
1003 Write the tags to FILE.");
1004 puts ("--parse-stdin=NAME\n\
1005 Read from standard input and record tags as belonging to file NAME.");
1009 puts ("-t, --typedefs\n\
1010 Generate tag entries for C and Ada typedefs.");
1011 puts ("-T, --typedefs-and-c++\n\
1012 Generate tag entries for C typedefs, C struct/enum/union tags,\n\
1013 and C++ member functions.");
1017 puts ("-u, --update\n\
1018 Update the tag entries for the given files, leaving tag\n\
1019 entries for other files in place. Currently, this is\n\
1020 implemented by deleting the existing entries for the given\n\
1021 files and then rewriting the new entries at the end of the\n\
1022 tags file. It is often faster to simply rebuild the entire\n\
1023 tag file than to use this.");
1027 puts ("-v, --vgrind\n\
1028 Print on the standard output an index of items intended for\n\
1029 human consumption, similar to the output of vgrind. The index\n\
1030 is sorted, and gives the page number of each item.");
1031 # if PRINT_UNDOCUMENTED_OPTIONS_HELP
1032 puts ("-w, --no-duplicates\n\
1033 Do not create duplicate tag entries, for compatibility with\n\
1034 traditional ctags.");
1035 puts ("-w, --no-warn\n\
1036 Suppress warning messages about duplicate tag entries.");
1037 # endif /* PRINT_UNDOCUMENTED_OPTIONS_HELP */
1038 puts ("-x, --cxref\n\
1039 Like --vgrind, but in the style of cxref, rather than vgrind.\n\
1040 The output uses line numbers instead of page numbers, but\n\
1041 beyond that the differences are cosmetic; try both to see\n\
1045 puts ("-V, --version\n\
1046 Print the version of the program.\n\
1048 Print this help message.\n\
1049 Followed by one or more `--language' options prints detailed\n\
1050 help about tag generation for the specified languages.");
1052 print_language_names ();
1055 puts ("Report bugs to bug-gnu-emacs@gnu.org");
1057 exit (EXIT_SUCCESS
);
1061 #ifdef VMS /* VMS specific functions */
1065 /* This is a BUG! ANY arbitrary limit is a BUG!
1066 Won't someone please fix this? */
1067 #define MAX_FILE_SPEC_LEN 255
1070 char body
[MAX_FILE_SPEC_LEN
+ 1];
1074 v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
1075 returning in each successive call the next file name matching the input
1076 spec. The function expects that each in_spec passed
1077 to it will be processed to completion; in particular, up to and
1078 including the call following that in which the last matching name
1079 is returned, the function ignores the value of in_spec, and will
1080 only start processing a new spec with the following call.
1081 If an error occurs, on return out_spec contains the value
1082 of in_spec when the error occurred.
1084 With each successive file name returned in out_spec, the
1085 function's return value is one. When there are no more matching
1086 names the function returns zero. If on the first call no file
1087 matches in_spec, or there is any other error, -1 is returned.
1091 #include <descrip.h>
1092 #define OUTSIZE MAX_FILE_SPEC_LEN
1098 static long context
= 0;
1099 static struct dsc$descriptor_s o
;
1100 static struct dsc$descriptor_s i
;
1101 static bool pass1
= TRUE
;
1108 o
.dsc$a_pointer
= (char *) out
;
1109 o
.dsc$w_length
= (short)OUTSIZE
;
1110 i
.dsc$a_pointer
= in
;
1111 i
.dsc$w_length
= (short)strlen(in
);
1112 i
.dsc$b_dtype
= DSC$K_DTYPE_T
;
1113 i
.dsc$b_class
= DSC$K_CLASS_S
;
1114 o
.dsc$b_dtype
= DSC$K_DTYPE_VT
;
1115 o
.dsc$b_class
= DSC$K_CLASS_VS
;
1117 if ((status
= lib$
find_file(&i
, &o
, &context
, 0, 0)) == RMS$_NORMAL
)
1119 out
->body
[out
->curlen
] = EOS
;
1122 else if (status
== RMS$_NMF
)
1126 strcpy(out
->body
, in
);
1129 lib$
find_file_end(&context
);
1135 v1.01 nmm 19-Aug-85 gfnames - return in successive calls the
1136 name of each file specified by the provided arg expanding wildcards.
1139 gfnames (arg
, p_error
)
1143 static vspec filename
= {MAX_FILE_SPEC_LEN
, "\0"};
1145 switch (fn_exp (&filename
, arg
))
1149 return filename
.body
;
1155 return filename
.body
;
1159 #ifndef OLD /* Newer versions of VMS do provide `system'. */
1163 error ("%s", "system() function not implemented under VMS");
1167 #define VERSION_DELIM ';'
1168 char *massage_name (s
)
1174 if (*s
== VERSION_DELIM
)
1192 unsigned int nincluded_files
;
1193 char **included_files
;
1194 argument
*argbuffer
;
1195 int current_arg
, file_count
;
1196 linebuffer filename_lb
;
1197 bool help_asked
= FALSE
;
1206 _fmode
= O_BINARY
; /* all of files are treated as binary files */
1210 nincluded_files
= 0;
1211 included_files
= xnew (argc
, char *);
1215 /* Allocate enough no matter what happens. Overkill, but each one
1217 argbuffer
= xnew (argc
, argument
);
1220 * If etags, always find typedefs and structure tags. Why not?
1221 * Also default to find macro constants, enum constants and
1226 typedefs
= typedefs_or_cplusplus
= constantypedefs
= TRUE
;
1230 /* When the optstring begins with a '-' getopt_long does not rearrange the
1231 non-options arguments to be at the end, but leaves them alone. */
1232 optstring
= concat (NO_LONG_OPTIONS
? "" : "-",
1233 "ac:Cf:Il:o:r:RSVhH",
1234 (CTAGS
) ? "BxdtTuvw" : "Di:");
1236 while ((opt
= getopt_long (argc
, argv
, optstring
, longopts
, NULL
)) != EOF
)
1240 /* If getopt returns 0, then it has already processed a
1241 long-named option. We should do nothing. */
1245 /* This means that a file name has been seen. Record it. */
1246 argbuffer
[current_arg
].arg_type
= at_filename
;
1247 argbuffer
[current_arg
].what
= optarg
;
1253 /* Parse standard input. Idea by Vivek <vivek@etla.org>. */
1254 argbuffer
[current_arg
].arg_type
= at_stdin
;
1255 argbuffer
[current_arg
].what
= optarg
;
1259 fatal ("cannot parse standard input more than once", (char *)NULL
);
1260 parsing_stdin
= TRUE
;
1263 /* Common options. */
1264 case 'a': append_to_tagfile
= TRUE
; break;
1265 case 'C': cplusplus
= TRUE
; break;
1266 case 'f': /* for compatibility with old makefiles */
1270 error ("-o option may only be given once.", (char *)NULL
);
1271 suggest_asking_for_help ();
1277 case 'S': /* for backward compatibility */
1278 ignoreindent
= TRUE
;
1282 language
*lang
= get_language_from_langname (optarg
);
1285 argbuffer
[current_arg
].lang
= lang
;
1286 argbuffer
[current_arg
].arg_type
= at_language
;
1292 /* Backward compatibility: support obsolete --ignore-case-regexp. */
1293 optarg
= concat (optarg
, "i", ""); /* memory leak here */
1296 argbuffer
[current_arg
].arg_type
= at_regexp
;
1297 argbuffer
[current_arg
].what
= optarg
;
1301 argbuffer
[current_arg
].arg_type
= at_regexp
;
1302 argbuffer
[current_arg
].what
= NULL
;
1314 case 'D': constantypedefs
= FALSE
; break;
1315 case 'i': included_files
[nincluded_files
++] = optarg
; break;
1317 /* Ctags options. */
1318 case 'B': searchar
= '?'; break;
1319 case 'd': constantypedefs
= TRUE
; break;
1320 case 't': typedefs
= TRUE
; break;
1321 case 'T': typedefs
= typedefs_or_cplusplus
= TRUE
; break;
1322 case 'u': update
= TRUE
; break;
1323 case 'v': vgrind_style
= TRUE
; /*FALLTHRU*/
1324 case 'x': cxref_style
= TRUE
; break;
1325 case 'w': no_warnings
= TRUE
; break;
1327 suggest_asking_for_help ();
1331 /* No more options. Store the rest of arguments. */
1332 for (; optind
< argc
; optind
++)
1334 argbuffer
[current_arg
].arg_type
= at_filename
;
1335 argbuffer
[current_arg
].what
= argv
[optind
];
1340 argbuffer
[current_arg
].arg_type
= at_end
;
1343 print_help (argbuffer
);
1346 if (nincluded_files
== 0 && file_count
== 0)
1348 error ("no input files specified.", (char *)NULL
);
1349 suggest_asking_for_help ();
1353 if (tagfile
== NULL
)
1354 tagfile
= CTAGS
? "tags" : "TAGS";
1355 cwd
= etags_getcwd (); /* the current working directory */
1356 if (cwd
[strlen (cwd
) - 1] != '/')
1359 cwd
= concat (oldcwd
, "/", "");
1362 /* Relative file names are made relative to the current directory. */
1363 if (streq (tagfile
, "-")
1364 || strneq (tagfile
, "/dev/", 5))
1367 tagfiledir
= absolute_dirname (tagfile
, cwd
);
1369 init (); /* set up boolean "functions" */
1371 linebuffer_init (&lb
);
1372 linebuffer_init (&filename_lb
);
1373 linebuffer_init (&filebuf
);
1374 linebuffer_init (&token_name
);
1378 if (streq (tagfile
, "-"))
1382 /* Switch redirected `stdout' to binary mode (setting `_fmode'
1383 doesn't take effect until after `stdout' is already open). */
1384 if (!isatty (fileno (stdout
)))
1385 setmode (fileno (stdout
), O_BINARY
);
1389 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1395 * Loop through files finding functions.
1397 for (i
= 0; i
< current_arg
; i
++)
1399 static language
*lang
; /* non-NULL if language is forced */
1402 switch (argbuffer
[i
].arg_type
)
1405 lang
= argbuffer
[i
].lang
;
1408 analyse_regex (argbuffer
[i
].what
);
1412 while ((this_file
= gfnames (argbuffer
[i
].what
, &got_err
)) != NULL
)
1416 error ("can't find file %s\n", this_file
);
1421 this_file
= massage_name (this_file
);
1424 this_file
= argbuffer
[i
].what
;
1426 /* Input file named "-" means read file names from stdin
1427 (one per line) and use them. */
1428 if (streq (this_file
, "-"))
1431 fatal ("cannot parse standard input AND read file names from it",
1433 while (readline_internal (&filename_lb
, stdin
) > 0)
1434 process_file_name (filename_lb
.buffer
, lang
);
1437 process_file_name (this_file
, lang
);
1443 this_file
= argbuffer
[i
].what
;
1444 process_file (stdin
, this_file
, lang
);
1451 free (filebuf
.buffer
);
1452 free (token_name
.buffer
);
1454 if (!CTAGS
|| cxref_style
)
1456 /* Write the remaining tags to tagf (ETAGS) or stdout (CXREF). */
1457 put_entries (nodehead
);
1458 free_tree (nodehead
);
1464 /* Output file entries that have no tags. */
1465 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1467 fprintf (tagf
, "\f\n%s,0\n", fdp
->taggedfname
);
1469 while (nincluded_files
-- > 0)
1470 fprintf (tagf
, "\f\n%s,include\n", *included_files
++);
1472 if (fclose (tagf
) == EOF
)
1476 exit (EXIT_SUCCESS
);
1479 /* From here on, we are in (CTAGS && !cxref_style) */
1483 for (i
= 0; i
< current_arg
; ++i
)
1485 switch (argbuffer
[i
].arg_type
)
1491 continue; /* the for loop */
1494 "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
1495 tagfile
, argbuffer
[i
].what
, tagfile
);
1496 if (system (cmd
) != EXIT_SUCCESS
)
1497 fatal ("failed to execute shell command", (char *)NULL
);
1499 append_to_tagfile
= TRUE
;
1502 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
1505 put_entries (nodehead
); /* write all the tags (CTAGS) */
1506 free_tree (nodehead
);
1508 if (fclose (tagf
) == EOF
)
1512 if (append_to_tagfile
|| update
)
1514 char cmd
[2*BUFSIZ
+20];
1515 /* Maybe these should be used:
1516 setenv ("LC_COLLATE", "C", 1);
1517 setenv ("LC_ALL", "C", 1); */
1518 sprintf (cmd
, "sort -u -o %.*s %.*s", BUFSIZ
, tagfile
, BUFSIZ
, tagfile
);
1519 exit (system (cmd
));
1521 return EXIT_SUCCESS
;
1526 * Return a compressor given the file name. If EXTPTR is non-zero,
1527 * return a pointer into FILE where the compressor-specific
1528 * extension begins. If no compressor is found, NULL is returned
1529 * and EXTPTR is not significant.
1530 * Idea by Vladimir Alexiev <vladimir@cs.ualberta.ca> (1998)
1533 get_compressor_from_suffix (file
, extptr
)
1538 char *slash
, *suffix
;
1540 /* This relies on FN to be after canonicalize_filename,
1541 so we don't need to consider backslashes on DOS_NT. */
1542 slash
= etags_strrchr (file
, '/');
1543 suffix
= etags_strrchr (file
, '.');
1544 if (suffix
== NULL
|| suffix
< slash
)
1549 /* Let those poor souls who live with DOS 8+3 file name limits get
1550 some solace by treating foo.cgz as if it were foo.c.gz, etc.
1551 Only the first do loop is run if not MSDOS */
1554 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1555 if (streq (compr
->suffix
, suffix
))
1558 break; /* do it only once: not really a loop */
1561 } while (*suffix
!= '\0');
1568 * Return a language given the name.
1571 get_language_from_langname (name
)
1577 error ("empty language name", (char *)NULL
);
1580 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1581 if (streq (name
, lang
->name
))
1583 error ("unknown language \"%s\"", name
);
1591 * Return a language given the interpreter name.
1594 get_language_from_interpreter (interpreter
)
1600 if (interpreter
== NULL
)
1602 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1603 if (lang
->interpreters
!= NULL
)
1604 for (iname
= lang
->interpreters
; *iname
!= NULL
; iname
++)
1605 if (streq (*iname
, interpreter
))
1614 * Return a language given the file name.
1617 get_language_from_filename (file
, case_sensitive
)
1619 bool case_sensitive
;
1622 char **name
, **ext
, *suffix
;
1624 /* Try whole file name first. */
1625 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1626 if (lang
->filenames
!= NULL
)
1627 for (name
= lang
->filenames
; *name
!= NULL
; name
++)
1628 if ((case_sensitive
)
1629 ? streq (*name
, file
)
1630 : strcaseeq (*name
, file
))
1633 /* If not found, try suffix after last dot. */
1634 suffix
= etags_strrchr (file
, '.');
1638 for (lang
= lang_names
; lang
->name
!= NULL
; lang
++)
1639 if (lang
->suffixes
!= NULL
)
1640 for (ext
= lang
->suffixes
; *ext
!= NULL
; ext
++)
1641 if ((case_sensitive
)
1642 ? streq (*ext
, suffix
)
1643 : strcaseeq (*ext
, suffix
))
1650 * This routine is called on each file argument.
1653 process_file_name (file
, lang
)
1657 struct stat stat_buf
;
1661 char *compressed_name
, *uncompressed_name
;
1662 char *ext
, *real_name
;
1665 canonicalize_filename (file
);
1666 if (streq (file
, tagfile
) && !streq (tagfile
, "-"))
1668 error ("skipping inclusion of %s in self.", file
);
1671 if ((compr
= get_compressor_from_suffix (file
, &ext
)) == NULL
)
1673 compressed_name
= NULL
;
1674 real_name
= uncompressed_name
= savestr (file
);
1678 real_name
= compressed_name
= savestr (file
);
1679 uncompressed_name
= savenstr (file
, ext
- file
);
1682 /* If the canonicalized uncompressed name
1683 has already been dealt with, skip it silently. */
1684 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
1686 assert (fdp
->infname
!= NULL
);
1687 if (streq (uncompressed_name
, fdp
->infname
))
1691 if (stat (real_name
, &stat_buf
) != 0)
1693 /* Reset real_name and try with a different name. */
1695 if (compressed_name
!= NULL
) /* try with the given suffix */
1697 if (stat (uncompressed_name
, &stat_buf
) == 0)
1698 real_name
= uncompressed_name
;
1700 else /* try all possible suffixes */
1702 for (compr
= compressors
; compr
->suffix
!= NULL
; compr
++)
1704 compressed_name
= concat (file
, ".", compr
->suffix
);
1705 if (stat (compressed_name
, &stat_buf
) != 0)
1709 char *suf
= compressed_name
+ strlen (file
);
1710 size_t suflen
= strlen (compr
->suffix
) + 1;
1711 for ( ; suf
[1]; suf
++, suflen
--)
1713 memmove (suf
, suf
+ 1, suflen
);
1714 if (stat (compressed_name
, &stat_buf
) == 0)
1716 real_name
= compressed_name
;
1720 if (real_name
!= NULL
)
1723 free (compressed_name
);
1724 compressed_name
= NULL
;
1728 real_name
= compressed_name
;
1733 if (real_name
== NULL
)
1738 } /* try with a different name */
1740 if (!S_ISREG (stat_buf
.st_mode
))
1742 error ("skipping %s: it is not a regular file.", real_name
);
1745 if (real_name
== compressed_name
)
1747 char *cmd
= concat (compr
->command
, " ", real_name
);
1748 inf
= (FILE *) popen (cmd
, "r");
1752 inf
= fopen (real_name
, "r");
1759 process_file (inf
, uncompressed_name
, lang
);
1761 if (real_name
== compressed_name
)
1762 retval
= pclose (inf
);
1764 retval
= fclose (inf
);
1769 if (compressed_name
) free (compressed_name
);
1770 if (uncompressed_name
) free (uncompressed_name
);
1777 process_file (fh
, fn
, lang
)
1782 static const fdesc emptyfdesc
;
1785 /* Create a new input file description entry. */
1786 fdp
= xnew (1, fdesc
);
1789 fdp
->infname
= savestr (fn
);
1791 fdp
->infabsname
= absolute_filename (fn
, cwd
);
1792 fdp
->infabsdir
= absolute_dirname (fn
, cwd
);
1793 if (filename_is_absolute (fn
))
1795 /* An absolute file name. Canonicalize it. */
1796 fdp
->taggedfname
= absolute_filename (fn
, NULL
);
1800 /* A file name relative to cwd. Make it relative
1801 to the directory of the tags file. */
1802 fdp
->taggedfname
= relative_filename (fn
, tagfiledir
);
1804 fdp
->usecharno
= TRUE
; /* use char position when making tags */
1806 fdp
->written
= FALSE
; /* not written on tags file yet */
1809 curfdp
= fdhead
; /* the current file description */
1813 /* If not Ctags, and if this is not metasource and if it contained no #line
1814 directives, we can write the tags and free all nodes pointing to
1817 && curfdp
->usecharno
/* no #line directives in this file */
1818 && !curfdp
->lang
->metasource
)
1822 /* Look for the head of the sublist relative to this file. See add_node
1823 for the structure of the node tree. */
1825 for (np
= nodehead
; np
!= NULL
; prev
= np
, np
= np
->left
)
1826 if (np
->fdp
== curfdp
)
1829 /* If we generated tags for this file, write and delete them. */
1832 /* This is the head of the last sublist, if any. The following
1833 instructions depend on this being true. */
1834 assert (np
->left
== NULL
);
1836 assert (fdhead
== curfdp
);
1837 assert (last_node
->fdp
== curfdp
);
1838 put_entries (np
); /* write tags for file curfdp->taggedfname */
1839 free_tree (np
); /* remove the written nodes */
1841 nodehead
= NULL
; /* no nodes left */
1843 prev
->left
= NULL
; /* delete the pointer to the sublist */
1849 * This routine sets up the boolean pseudo-functions which work
1850 * by setting boolean flags dependent upon the corresponding character.
1851 * Every char which is NOT in that string is not a white char. Therefore,
1852 * all of the array "_wht" is set to FALSE, and then the elements
1853 * subscripted by the chars in "white" are set to TRUE. Thus "_wht"
1854 * of a char is TRUE if it is the string "white", else FALSE.
1862 for (i
= 0; i
< CHARS
; i
++)
1863 iswhite(i
) = notinname(i
) = begtoken(i
) = intoken(i
) = endtoken(i
) = FALSE
;
1864 for (sp
= white
; *sp
!= '\0'; sp
++) iswhite (*sp
) = TRUE
;
1865 for (sp
= nonam
; *sp
!= '\0'; sp
++) notinname (*sp
) = TRUE
;
1866 notinname('\0') = notinname('\n');
1867 for (sp
= begtk
; *sp
!= '\0'; sp
++) begtoken (*sp
) = TRUE
;
1868 begtoken('\0') = begtoken('\n');
1869 for (sp
= midtk
; *sp
!= '\0'; sp
++) intoken (*sp
) = TRUE
;
1870 intoken('\0') = intoken('\n');
1871 for (sp
= endtk
; *sp
!= '\0'; sp
++) endtoken (*sp
) = TRUE
;
1872 endtoken('\0') = endtoken('\n');
1876 * This routine opens the specified file and calls the function
1877 * which finds the function and type definitions.
1884 language
*lang
= curfdp
->lang
;
1885 Lang_function
*parser
= NULL
;
1887 /* If user specified a language, use it. */
1888 if (lang
!= NULL
&& lang
->function
!= NULL
)
1890 parser
= lang
->function
;
1893 /* Else try to guess the language given the file name. */
1896 lang
= get_language_from_filename (curfdp
->infname
, TRUE
);
1897 if (lang
!= NULL
&& lang
->function
!= NULL
)
1899 curfdp
->lang
= lang
;
1900 parser
= lang
->function
;
1904 /* Else look for sharp-bang as the first two characters. */
1906 && readline_internal (&lb
, inf
) > 0
1908 && lb
.buffer
[0] == '#'
1909 && lb
.buffer
[1] == '!')
1913 /* Set lp to point at the first char after the last slash in the
1914 line or, if no slashes, at the first nonblank. Then set cp to
1915 the first successive blank and terminate the string. */
1916 lp
= etags_strrchr (lb
.buffer
+2, '/');
1920 lp
= skip_spaces (lb
.buffer
+ 2);
1921 cp
= skip_non_spaces (lp
);
1924 if (strlen (lp
) > 0)
1926 lang
= get_language_from_interpreter (lp
);
1927 if (lang
!= NULL
&& lang
->function
!= NULL
)
1929 curfdp
->lang
= lang
;
1930 parser
= lang
->function
;
1935 /* We rewind here, even if inf may be a pipe. We fail if the
1936 length of the first line is longer than the pipe block size,
1937 which is unlikely. */
1940 /* Else try to guess the language given the case insensitive file name. */
1943 lang
= get_language_from_filename (curfdp
->infname
, FALSE
);
1944 if (lang
!= NULL
&& lang
->function
!= NULL
)
1946 curfdp
->lang
= lang
;
1947 parser
= lang
->function
;
1951 /* Else try Fortran or C. */
1954 node
*old_last_node
= last_node
;
1956 curfdp
->lang
= get_language_from_langname ("fortran");
1959 if (old_last_node
== last_node
)
1960 /* No Fortran entries found. Try C. */
1962 /* We do not tag if rewind fails.
1963 Only the file name will be recorded in the tags file. */
1965 curfdp
->lang
= get_language_from_langname (cplusplus
? "c++" : "c");
1971 if (!no_line_directive
1972 && curfdp
->lang
!= NULL
&& curfdp
->lang
->metasource
)
1973 /* It may be that this is a bingo.y file, and we already parsed a bingo.c
1974 file, or anyway we parsed a file that is automatically generated from
1975 this one. If this is the case, the bingo.c file contained #line
1976 directives that generated tags pointing to this file. Let's delete
1977 them all before parsing this file, which is the real source. */
1979 fdesc
**fdpp
= &fdhead
;
1980 while (*fdpp
!= NULL
)
1982 && streq ((*fdpp
)->taggedfname
, curfdp
->taggedfname
))
1983 /* We found one of those! We must delete both the file description
1984 and all tags referring to it. */
1986 fdesc
*badfdp
= *fdpp
;
1988 /* Delete the tags referring to badfdp->taggedfname
1989 that were obtained from badfdp->infname. */
1990 invalidate_nodes (badfdp
, &nodehead
);
1992 *fdpp
= badfdp
->next
; /* remove the bad description from the list */
1993 free_fdesc (badfdp
);
1996 fdpp
= &(*fdpp
)->next
; /* advance the list pointer */
1999 assert (parser
!= NULL
);
2001 /* Generic initialisations before reading from file. */
2002 linebuffer_setlen (&filebuf
, 0); /* reset the file buffer */
2004 /* Generic initialisations before parsing file with readline. */
2005 lineno
= 0; /* reset global line number */
2006 charno
= 0; /* reset global char number */
2007 linecharno
= 0; /* reset global char number of line start */
2011 regex_tag_multiline ();
2016 * Check whether an implicitly named tag should be created,
2017 * then call `pfnote'.
2018 * NAME is a string that is internally copied by this function.
2020 * TAGS format specification
2021 * Idea by Sam Kendall <kendall@mv.mv.com> (1997)
2022 * The following is explained in some more detail in etc/ETAGS.EBNF.
2024 * make_tag creates tags with "implicit tag names" (unnamed tags)
2025 * if the following are all true, assuming NONAM=" \f\t\n\r()=,;":
2026 * 1. NAME does not contain any of the characters in NONAM;
2027 * 2. LINESTART contains name as either a rightmost, or rightmost but
2028 * one character, substring;
2029 * 3. the character, if any, immediately before NAME in LINESTART must
2030 * be a character in NONAM;
2031 * 4. the character, if any, immediately after NAME in LINESTART must
2032 * also be a character in NONAM.
2034 * The implementation uses the notinname() macro, which recognises the
2035 * characters stored in the string `nonam'.
2036 * etags.el needs to use the same characters that are in NONAM.
2039 make_tag (name
, namelen
, is_func
, linestart
, linelen
, lno
, cno
)
2040 char *name
; /* tag name, or NULL if unnamed */
2041 int namelen
; /* tag length */
2042 bool is_func
; /* tag is a function */
2043 char *linestart
; /* start of the line where tag is */
2044 int linelen
; /* length of the line where tag is */
2045 int lno
; /* line number */
2046 long cno
; /* character number */
2048 bool named
= (name
!= NULL
&& namelen
> 0);
2050 if (!CTAGS
&& named
) /* maybe set named to false */
2051 /* Let's try to make an implicit tag name, that is, create an unnamed tag
2052 such that etags.el can guess a name from it. */
2055 register char *cp
= name
;
2057 for (i
= 0; i
< namelen
; i
++)
2058 if (notinname (*cp
++))
2060 if (i
== namelen
) /* rule #1 */
2062 cp
= linestart
+ linelen
- namelen
;
2063 if (notinname (linestart
[linelen
-1]))
2064 cp
-= 1; /* rule #4 */
2065 if (cp
>= linestart
/* rule #2 */
2067 || notinname (cp
[-1])) /* rule #3 */
2068 && strneq (name
, cp
, namelen
)) /* rule #2 */
2069 named
= FALSE
; /* use implicit tag name */
2074 name
= savenstr (name
, namelen
);
2077 pfnote (name
, is_func
, linestart
, linelen
, lno
, cno
);
2082 pfnote (name
, is_func
, linestart
, linelen
, lno
, cno
)
2083 char *name
; /* tag name, or NULL if unnamed */
2084 bool is_func
; /* tag is a function */
2085 char *linestart
; /* start of the line where tag is */
2086 int linelen
; /* length of the line where tag is */
2087 int lno
; /* line number */
2088 long cno
; /* character number */
2092 assert (name
== NULL
|| name
[0] != '\0');
2093 if (CTAGS
&& name
== NULL
)
2096 np
= xnew (1, node
);
2098 /* If ctags mode, change name "main" to M<thisfilename>. */
2099 if (CTAGS
&& !cxref_style
&& streq (name
, "main"))
2101 register char *fp
= etags_strrchr (curfdp
->taggedfname
, '/');
2102 np
->name
= concat ("M", fp
== NULL
? curfdp
->taggedfname
: fp
+ 1, "");
2103 fp
= etags_strrchr (np
->name
, '.');
2104 if (fp
!= NULL
&& fp
[1] != '\0' && fp
[2] == '\0')
2110 np
->been_warned
= FALSE
;
2112 np
->is_func
= is_func
;
2114 if (np
->fdp
->usecharno
)
2115 /* Our char numbers are 0-base, because of C language tradition?
2116 ctags compatibility? old versions compatibility? I don't know.
2117 Anyway, since emacs's are 1-base we expect etags.el to take care
2118 of the difference. If we wanted to have 1-based numbers, we would
2119 uncomment the +1 below. */
2120 np
->cno
= cno
/* + 1 */ ;
2122 np
->cno
= invalidcharno
;
2123 np
->left
= np
->right
= NULL
;
2124 if (CTAGS
&& !cxref_style
)
2126 if (strlen (linestart
) < 50)
2127 np
->regex
= concat (linestart
, "$", "");
2129 np
->regex
= savenstr (linestart
, 50);
2132 np
->regex
= savenstr (linestart
, linelen
);
2134 add_node (np
, &nodehead
);
2139 * recurse on left children, iterate on right children.
2147 register node
*node_right
= np
->right
;
2148 free_tree (np
->left
);
2149 if (np
->name
!= NULL
)
2159 * delete a file description
2163 register fdesc
*fdp
;
2165 if (fdp
->infname
!= NULL
) free (fdp
->infname
);
2166 if (fdp
->infabsname
!= NULL
) free (fdp
->infabsname
);
2167 if (fdp
->infabsdir
!= NULL
) free (fdp
->infabsdir
);
2168 if (fdp
->taggedfname
!= NULL
) free (fdp
->taggedfname
);
2169 if (fdp
->prop
!= NULL
) free (fdp
->prop
);
2175 * Adds a node to the tree of nodes. In etags mode, sort by file
2176 * name. In ctags mode, sort by tag name. Make no attempt at
2179 * add_node is the only function allowed to add nodes, so it can
2183 add_node (np
, cur_node_p
)
2184 node
*np
, **cur_node_p
;
2187 register node
*cur_node
= *cur_node_p
;
2189 if (cur_node
== NULL
)
2199 /* For each file name, tags are in a linked sublist on the right
2200 pointer. The first tags of different files are a linked list
2201 on the left pointer. last_node points to the end of the last
2203 if (last_node
!= NULL
&& last_node
->fdp
== np
->fdp
)
2205 /* Let's use the same sublist as the last added node. */
2206 assert (last_node
->right
== NULL
);
2207 last_node
->right
= np
;
2210 else if (cur_node
->fdp
== np
->fdp
)
2212 /* Scanning the list we found the head of a sublist which is
2213 good for us. Let's scan this sublist. */
2214 add_node (np
, &cur_node
->right
);
2217 /* The head of this sublist is not good for us. Let's try the
2219 add_node (np
, &cur_node
->left
);
2220 } /* if ETAGS mode */
2225 dif
= strcmp (np
->name
, cur_node
->name
);
2228 * If this tag name matches an existing one, then
2229 * do not add the node, but maybe print a warning.
2231 if (no_duplicates
&& !dif
)
2233 if (np
->fdp
== cur_node
->fdp
)
2237 fprintf (stderr
, "Duplicate entry in file %s, line %d: %s\n",
2238 np
->fdp
->infname
, lineno
, np
->name
);
2239 fprintf (stderr
, "Second entry ignored\n");
2242 else if (!cur_node
->been_warned
&& !no_warnings
)
2246 "Duplicate entry in files %s and %s: %s (Warning only)\n",
2247 np
->fdp
->infname
, cur_node
->fdp
->infname
, np
->name
);
2248 cur_node
->been_warned
= TRUE
;
2253 /* Actually add the node */
2254 add_node (np
, dif
< 0 ? &cur_node
->left
: &cur_node
->right
);
2255 } /* if CTAGS mode */
2259 * invalidate_nodes ()
2260 * Scan the node tree and invalidate all nodes pointing to the
2261 * given file description (CTAGS case) or free them (ETAGS case).
2264 invalidate_nodes (badfdp
, npp
)
2275 if (np
->left
!= NULL
)
2276 invalidate_nodes (badfdp
, &np
->left
);
2277 if (np
->fdp
== badfdp
)
2279 if (np
->right
!= NULL
)
2280 invalidate_nodes (badfdp
, &np
->right
);
2284 assert (np
->fdp
!= NULL
);
2285 if (np
->fdp
== badfdp
)
2287 *npp
= np
->left
; /* detach the sublist from the list */
2288 np
->left
= NULL
; /* isolate it */
2289 free_tree (np
); /* free it */
2290 invalidate_nodes (badfdp
, npp
);
2293 invalidate_nodes (badfdp
, &np
->left
);
2298 static int total_size_of_entries
__P((node
*));
2299 static int number_len
__P((long));
2301 /* Length of a non-negative number's decimal representation. */
2307 while ((num
/= 10) > 0)
2313 * Return total number of characters that put_entries will output for
2314 * the nodes in the linked list at the right of the specified node.
2315 * This count is irrelevant with etags.el since emacs 19.34 at least,
2316 * but is still supplied for backward compatibility.
2319 total_size_of_entries (np
)
2322 register int total
= 0;
2324 for (; np
!= NULL
; np
= np
->right
)
2327 total
+= strlen (np
->regex
) + 1; /* pat\177 */
2328 if (np
->name
!= NULL
)
2329 total
+= strlen (np
->name
) + 1; /* name\001 */
2330 total
+= number_len ((long) np
->lno
) + 1; /* lno, */
2331 if (np
->cno
!= invalidcharno
) /* cno */
2332 total
+= number_len (np
->cno
);
2333 total
+= 1; /* newline */
2344 static fdesc
*fdp
= NULL
;
2349 /* Output subentries that precede this one */
2351 put_entries (np
->left
);
2353 /* Output this entry */
2362 fprintf (tagf
, "\f\n%s,%d\n",
2363 fdp
->taggedfname
, total_size_of_entries (np
));
2364 fdp
->written
= TRUE
;
2366 fputs (np
->regex
, tagf
);
2367 fputc ('\177', tagf
);
2368 if (np
->name
!= NULL
)
2370 fputs (np
->name
, tagf
);
2371 fputc ('\001', tagf
);
2373 fprintf (tagf
, "%d,", np
->lno
);
2374 if (np
->cno
!= invalidcharno
)
2375 fprintf (tagf
, "%ld", np
->cno
);
2381 if (np
->name
== NULL
)
2382 error ("internal error: NULL name in ctags mode.", (char *)NULL
);
2387 fprintf (stdout
, "%s %s %d\n",
2388 np
->name
, np
->fdp
->taggedfname
, (np
->lno
+ 63) / 64);
2390 fprintf (stdout
, "%-16s %3d %-16s %s\n",
2391 np
->name
, np
->lno
, np
->fdp
->taggedfname
, np
->regex
);
2395 fprintf (tagf
, "%s\t%s\t", np
->name
, np
->fdp
->taggedfname
);
2398 { /* function or #define macro with args */
2399 putc (searchar
, tagf
);
2402 for (sp
= np
->regex
; *sp
; sp
++)
2404 if (*sp
== '\\' || *sp
== searchar
)
2408 putc (searchar
, tagf
);
2411 { /* anything else; text pattern inadequate */
2412 fprintf (tagf
, "%d", np
->lno
);
2417 } /* if this node contains a valid tag */
2419 /* Output subentries that follow this one */
2420 put_entries (np
->right
);
2422 put_entries (np
->left
);
2427 #define C_EXT 0x00fff /* C extensions */
2428 #define C_PLAIN 0x00000 /* C */
2429 #define C_PLPL 0x00001 /* C++ */
2430 #define C_STAR 0x00003 /* C* */
2431 #define C_JAVA 0x00005 /* JAVA */
2432 #define C_AUTO 0x01000 /* C, but switch to C++ if `class' is met */
2433 #define YACC 0x10000 /* yacc file */
2436 * The C symbol tables.
2441 st_C_objprot
, st_C_objimpl
, st_C_objend
,
2443 st_C_ignore
, st_C_attribute
,
2446 st_C_class
, st_C_template
,
2447 st_C_struct
, st_C_extern
, st_C_enum
, st_C_define
, st_C_typedef
2450 static unsigned int hash
__P((const char *, unsigned int));
2451 static struct C_stab_entry
* in_word_set
__P((const char *, unsigned int));
2452 static enum sym_type C_symtype
__P((char *, int, int));
2454 /* Feed stuff between (but not including) %[ and %] lines to:
2460 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
2464 while, 0, st_C_ignore
2465 switch, 0, st_C_ignore
2466 return, 0, st_C_ignore
2467 __attribute__, 0, st_C_attribute
2468 @interface, 0, st_C_objprot
2469 @protocol, 0, st_C_objprot
2470 @implementation,0, st_C_objimpl
2471 @end, 0, st_C_objend
2472 import, (C_JAVA & ~C_PLPL), st_C_ignore
2473 package, (C_JAVA & ~C_PLPL), st_C_ignore
2474 friend, C_PLPL, st_C_ignore
2475 extends, (C_JAVA & ~C_PLPL), st_C_javastruct
2476 implements, (C_JAVA & ~C_PLPL), st_C_javastruct
2477 interface, (C_JAVA & ~C_PLPL), st_C_struct
2478 class, 0, st_C_class
2479 namespace, C_PLPL, st_C_struct
2480 domain, C_STAR, st_C_struct
2481 union, 0, st_C_struct
2482 struct, 0, st_C_struct
2483 extern, 0, st_C_extern
2485 typedef, 0, st_C_typedef
2486 define, 0, st_C_define
2487 undef, 0, st_C_define
2488 operator, C_PLPL, st_C_operator
2489 template, 0, st_C_template
2490 # DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach).
2491 DEFUN, 0, st_C_gnumacro
2492 SYSCALL, 0, st_C_gnumacro
2493 ENTRY, 0, st_C_gnumacro
2494 PSEUDO, 0, st_C_gnumacro
2495 # These are defined inside C functions, so currently they are not met.
2496 # EXFUN used in glibc, DEFVAR_* in emacs.
2497 #EXFUN, 0, st_C_gnumacro
2498 #DEFVAR_, 0, st_C_gnumacro
2500 and replace lines between %< and %> with its output, then:
2501 - remove the #if characterset check
2502 - make in_word_set static and not inline. */
2504 /* C code produced by gperf version 3.0.1 */
2505 /* Command-line: gperf -m 5 */
2506 /* Computed positions: -k'2-3' */
2508 struct C_stab_entry
{ char *name
; int c_ext
; enum sym_type type
; };
2509 /* maximum key range = 33, duplicates = 0 */
2520 register const char *str
;
2521 register unsigned int len
;
2523 static unsigned char asso_values
[] =
2525 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2526 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2527 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2528 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2529 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2530 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2531 35, 35, 35, 35, 35, 35, 35, 35, 35, 15,
2532 14, 35, 35, 35, 35, 35, 35, 35, 14, 35,
2533 35, 35, 35, 12, 13, 35, 35, 35, 35, 12,
2534 35, 35, 35, 35, 35, 1, 35, 16, 35, 6,
2535 23, 0, 0, 35, 22, 0, 35, 35, 5, 0,
2536 0, 15, 1, 35, 6, 35, 8, 19, 35, 16,
2537 4, 5, 35, 35, 35, 35, 35, 35, 35, 35,
2538 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2539 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2540 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2541 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2542 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2543 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2544 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2545 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2546 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2547 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2548 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2549 35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
2550 35, 35, 35, 35, 35, 35
2552 register int hval
= len
;
2557 hval
+= asso_values
[(unsigned char)str
[2]];
2560 hval
+= asso_values
[(unsigned char)str
[1]];
2566 static struct C_stab_entry
*
2567 in_word_set (str
, len
)
2568 register const char *str
;
2569 register unsigned int len
;
2573 TOTAL_KEYWORDS
= 32,
2574 MIN_WORD_LENGTH
= 2,
2575 MAX_WORD_LENGTH
= 15,
2580 static struct C_stab_entry wordlist
[] =
2583 {"if", 0, st_C_ignore
},
2585 {"@end", 0, st_C_objend
},
2586 {"union", 0, st_C_struct
},
2587 {"define", 0, st_C_define
},
2588 {"import", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2589 {"template", 0, st_C_template
},
2590 {"operator", C_PLPL
, st_C_operator
},
2591 {"@interface", 0, st_C_objprot
},
2592 {"implements", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2593 {"friend", C_PLPL
, st_C_ignore
},
2594 {"typedef", 0, st_C_typedef
},
2595 {"return", 0, st_C_ignore
},
2596 {"@implementation",0, st_C_objimpl
},
2597 {"@protocol", 0, st_C_objprot
},
2598 {"interface", (C_JAVA
& ~C_PLPL
), st_C_struct
},
2599 {"extern", 0, st_C_extern
},
2600 {"extends", (C_JAVA
& ~C_PLPL
), st_C_javastruct
},
2601 {"struct", 0, st_C_struct
},
2602 {"domain", C_STAR
, st_C_struct
},
2603 {"switch", 0, st_C_ignore
},
2604 {"enum", 0, st_C_enum
},
2605 {"for", 0, st_C_ignore
},
2606 {"namespace", C_PLPL
, st_C_struct
},
2607 {"class", 0, st_C_class
},
2608 {"while", 0, st_C_ignore
},
2609 {"undef", 0, st_C_define
},
2610 {"package", (C_JAVA
& ~C_PLPL
), st_C_ignore
},
2611 {"__attribute__", 0, st_C_attribute
},
2612 {"SYSCALL", 0, st_C_gnumacro
},
2613 {"ENTRY", 0, st_C_gnumacro
},
2614 {"PSEUDO", 0, st_C_gnumacro
},
2615 {"DEFUN", 0, st_C_gnumacro
}
2618 if (len
<= MAX_WORD_LENGTH
&& len
>= MIN_WORD_LENGTH
)
2620 register int key
= hash (str
, len
);
2622 if (key
<= MAX_HASH_VALUE
&& key
>= 0)
2624 register const char *s
= wordlist
[key
].name
;
2626 if (*str
== *s
&& !strncmp (str
+ 1, s
+ 1, len
- 1) && s
[len
] == '\0')
2627 return &wordlist
[key
];
2634 static enum sym_type
2635 C_symtype (str
, len
, c_ext
)
2640 register struct C_stab_entry
*se
= in_word_set (str
, len
);
2642 if (se
== NULL
|| (se
->c_ext
&& !(c_ext
& se
->c_ext
)))
2649 * Ignoring __attribute__ ((list))
2651 static bool inattribute
; /* looking at an __attribute__ construct */
2654 * C functions and variables are recognized using a simple
2655 * finite automaton. fvdef is its state variable.
2659 fvnone
, /* nothing seen */
2660 fdefunkey
, /* Emacs DEFUN keyword seen */
2661 fdefunname
, /* Emacs DEFUN name seen */
2662 foperator
, /* func: operator keyword seen (cplpl) */
2663 fvnameseen
, /* function or variable name seen */
2664 fstartlist
, /* func: just after open parenthesis */
2665 finlist
, /* func: in parameter list */
2666 flistseen
, /* func: after parameter list */
2667 fignore
, /* func: before open brace */
2668 vignore
/* var-like: ignore until ';' */
2671 static bool fvextern
; /* func or var: extern keyword seen; */
2674 * typedefs are recognized using a simple finite automaton.
2675 * typdef is its state variable.
2679 tnone
, /* nothing seen */
2680 tkeyseen
, /* typedef keyword seen */
2681 ttypeseen
, /* defined type seen */
2682 tinbody
, /* inside typedef body */
2683 tend
, /* just before typedef tag */
2684 tignore
/* junk after typedef tag */
2688 * struct-like structures (enum, struct and union) are recognized
2689 * using another simple finite automaton. `structdef' is its state
2694 snone
, /* nothing seen yet,
2695 or in struct body if bracelev > 0 */
2696 skeyseen
, /* struct-like keyword seen */
2697 stagseen
, /* struct-like tag seen */
2698 scolonseen
/* colon seen after struct-like tag */
2702 * When objdef is different from onone, objtag is the name of the class.
2704 static char *objtag
= "<uninited>";
2707 * Yet another little state machine to deal with preprocessor lines.
2711 dnone
, /* nothing seen */
2712 dsharpseen
, /* '#' seen as first char on line */
2713 ddefineseen
, /* '#' and 'define' seen */
2714 dignorerest
/* ignore rest of line */
2718 * State machine for Objective C protocols and implementations.
2719 * Idea by Tom R.Hageman <tom@basil.icce.rug.nl> (1995)
2723 onone
, /* nothing seen */
2724 oprotocol
, /* @interface or @protocol seen */
2725 oimplementation
, /* @implementations seen */
2726 otagseen
, /* class name seen */
2727 oparenseen
, /* parenthesis before category seen */
2728 ocatseen
, /* category name seen */
2729 oinbody
, /* in @implementation body */
2730 omethodsign
, /* in @implementation body, after +/- */
2731 omethodtag
, /* after method name */
2732 omethodcolon
, /* after method colon */
2733 omethodparm
, /* after method parameter */
2734 oignore
/* wait for @end */
2739 * Use this structure to keep info about the token read, and how it
2740 * should be tagged. Used by the make_C_tag function to build a tag.
2744 char *line
; /* string containing the token */
2745 int offset
; /* where the token starts in LINE */
2746 int length
; /* token length */
2748 The previous members can be used to pass strings around for generic
2749 purposes. The following ones specifically refer to creating tags. In this
2750 case the token contained here is the pattern that will be used to create a
2753 bool valid
; /* do not create a tag; the token should be
2754 invalidated whenever a state machine is
2755 reset prematurely */
2756 bool named
; /* create a named tag */
2757 int lineno
; /* source line number of tag */
2758 long linepos
; /* source char number of tag */
2759 } token
; /* latest token read */
2762 * Variables and functions for dealing with nested structures.
2763 * Idea by Mykola Dzyuba <mdzyuba@yahoo.com> (2001)
2765 static void pushclass_above
__P((int, char *, int));
2766 static void popclass_above
__P((int));
2767 static void write_classname
__P((linebuffer
*, char *qualifier
));
2770 char **cname
; /* nested class names */
2771 int *bracelev
; /* nested class brace level */
2772 int nl
; /* class nesting level (elements used) */
2773 int size
; /* length of the array */
2774 } cstack
; /* stack for nested declaration tags */
2775 /* Current struct nesting depth (namespace, class, struct, union, enum). */
2776 #define nestlev (cstack.nl)
2777 /* After struct keyword or in struct body, not inside a nested function. */
2778 #define instruct (structdef == snone && nestlev > 0 \
2779 && bracelev == cstack.bracelev[nestlev-1] + 1)
2782 pushclass_above (bracelev
, str
, len
)
2789 popclass_above (bracelev
);
2791 if (nl
>= cstack
.size
)
2793 int size
= cstack
.size
*= 2;
2794 xrnew (cstack
.cname
, size
, char *);
2795 xrnew (cstack
.bracelev
, size
, int);
2797 assert (nl
== 0 || cstack
.bracelev
[nl
-1] < bracelev
);
2798 cstack
.cname
[nl
] = (str
== NULL
) ? NULL
: savenstr (str
, len
);
2799 cstack
.bracelev
[nl
] = bracelev
;
2804 popclass_above (bracelev
)
2809 for (nl
= cstack
.nl
- 1;
2810 nl
>= 0 && cstack
.bracelev
[nl
] >= bracelev
;
2813 if (cstack
.cname
[nl
] != NULL
)
2814 free (cstack
.cname
[nl
]);
2820 write_classname (cn
, qualifier
)
2825 int qlen
= strlen (qualifier
);
2827 if (cstack
.nl
== 0 || cstack
.cname
[0] == NULL
)
2831 cn
->buffer
[0] = '\0';
2835 len
= strlen (cstack
.cname
[0]);
2836 linebuffer_setlen (cn
, len
);
2837 strcpy (cn
->buffer
, cstack
.cname
[0]);
2839 for (i
= 1; i
< cstack
.nl
; i
++)
2844 s
= cstack
.cname
[i
];
2849 linebuffer_setlen (cn
, len
);
2850 strncat (cn
->buffer
, qualifier
, qlen
);
2851 strncat (cn
->buffer
, s
, slen
);
2856 static bool consider_token
__P((char *, int, int, int *, int, int, bool *));
2857 static void make_C_tag
__P((bool));
2861 * checks to see if the current token is at the start of a
2862 * function or variable, or corresponds to a typedef, or
2863 * is a struct/union/enum tag, or #define, or an enum constant.
2865 * *IS_FUNC gets TRUE if the token is a function or #define macro
2866 * with args. C_EXTP points to which language we are looking at.
2877 consider_token (str
, len
, c
, c_extp
, bracelev
, parlev
, is_func_or_var
)
2878 register char *str
; /* IN: token pointer */
2879 register int len
; /* IN: token length */
2880 register int c
; /* IN: first char after the token */
2881 int *c_extp
; /* IN, OUT: C extensions mask */
2882 int bracelev
; /* IN: brace level */
2883 int parlev
; /* IN: parenthesis level */
2884 bool *is_func_or_var
; /* OUT: function or variable found */
2886 /* When structdef is stagseen, scolonseen, or snone with bracelev > 0,
2887 structtype is the type of the preceding struct-like keyword, and
2888 structbracelev is the brace level where it has been seen. */
2889 static enum sym_type structtype
;
2890 static int structbracelev
;
2891 static enum sym_type toktype
;
2894 toktype
= C_symtype (str
, len
, *c_extp
);
2897 * Skip __attribute__
2899 if (toktype
== st_C_attribute
)
2906 * Advance the definedef state machine.
2911 /* We're not on a preprocessor line. */
2912 if (toktype
== st_C_gnumacro
)
2919 if (toktype
== st_C_define
)
2921 definedef
= ddefineseen
;
2925 definedef
= dignorerest
;
2930 * Make a tag for any macro, unless it is a constant
2931 * and constantypedefs is FALSE.
2933 definedef
= dignorerest
;
2934 *is_func_or_var
= (c
== '(');
2935 if (!*is_func_or_var
&& !constantypedefs
)
2942 error ("internal error: definedef value.", (char *)NULL
);
2951 if (toktype
== st_C_typedef
)
2971 if (structdef
== snone
&& fvdef
== fvnone
)
2990 case st_C_javastruct
:
2991 if (structdef
== stagseen
)
2992 structdef
= scolonseen
;
2996 if ((*c_extp
& C_AUTO
) /* automatic detection of C++ language */
2998 && definedef
== dnone
&& structdef
== snone
2999 && typdef
== tnone
&& fvdef
== fvnone
)
3000 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
3001 if (toktype
== st_C_template
)
3008 && (typdef
== tkeyseen
3009 || (typedefs_or_cplusplus
&& structdef
== snone
)))
3011 structdef
= skeyseen
;
3012 structtype
= toktype
;
3013 structbracelev
= bracelev
;
3014 if (fvdef
== fvnameseen
)
3020 if (structdef
== skeyseen
)
3022 structdef
= stagseen
;
3026 if (typdef
!= tnone
)
3029 /* Detect Objective C constructs. */
3039 objdef
= oimplementation
;
3043 case oimplementation
:
3044 /* Save the class tag for functions or variables defined inside. */
3045 objtag
= savenstr (str
, len
);
3049 /* Save the class tag for categories. */
3050 objtag
= savenstr (str
, len
);
3052 *is_func_or_var
= TRUE
;
3056 *is_func_or_var
= TRUE
;
3064 objdef
= omethodtag
;
3065 linebuffer_setlen (&token_name
, len
);
3066 strncpy (token_name
.buffer
, str
, len
);
3067 token_name
.buffer
[len
] = '\0';
3073 objdef
= omethodparm
;
3079 objdef
= omethodtag
;
3080 linebuffer_setlen (&token_name
, token_name
.len
+ len
);
3081 strncat (token_name
.buffer
, str
, len
);
3086 if (toktype
== st_C_objend
)
3088 /* Memory leakage here: the string pointed by objtag is
3089 never released, because many tests would be needed to
3090 avoid breaking on incorrect input code. The amount of
3091 memory leaked here is the sum of the lengths of the
3099 /* A function, variable or enum constant? */
3121 *is_func_or_var
= TRUE
;
3125 && structdef
== snone
3126 && structtype
== st_C_enum
&& bracelev
> structbracelev
)
3127 return TRUE
; /* enum constant */
3133 fvdef
= fdefunname
; /* GNU macro */
3134 *is_func_or_var
= TRUE
;
3142 if ((strneq (str
, "asm", 3) && endtoken (str
[3]))
3143 || (strneq (str
, "__asm__", 7) && endtoken (str
[7])))
3152 if (len
>= 10 && strneq (str
+len
-10, "::operator", 10))
3154 if (*c_extp
& C_AUTO
) /* automatic detection of C++ */
3155 *c_extp
= (*c_extp
| C_PLPL
) & ~C_AUTO
;
3157 *is_func_or_var
= TRUE
;
3160 if (bracelev
> 0 && !instruct
)
3162 fvdef
= fvnameseen
; /* function or variable */
3163 *is_func_or_var
= TRUE
;
3174 * C_entries often keeps pointers to tokens or lines which are older than
3175 * the line currently read. By keeping two line buffers, and switching
3176 * them at end of line, it is possible to use those pointers.
3184 #define current_lb_is_new (newndx == curndx)
3185 #define switch_line_buffers() (curndx = 1 - curndx)
3187 #define curlb (lbs[curndx].lb)
3188 #define newlb (lbs[newndx].lb)
3189 #define curlinepos (lbs[curndx].linepos)
3190 #define newlinepos (lbs[newndx].linepos)
3192 #define plainc ((c_ext & C_EXT) == C_PLAIN)
3193 #define cplpl (c_ext & C_PLPL)
3194 #define cjava ((c_ext & C_JAVA) == C_JAVA)
3196 #define CNL_SAVE_DEFINEDEF() \
3198 curlinepos = charno; \
3199 readline (&curlb, inf); \
3200 lp = curlb.buffer; \
3207 CNL_SAVE_DEFINEDEF(); \
3208 if (savetoken.valid) \
3210 token = savetoken; \
3211 savetoken.valid = FALSE; \
3213 definedef = dnone; \
3221 /* This function is never called when token.valid is FALSE, but
3222 we must protect against invalid input or internal errors. */
3223 if (!DEBUG
&& !token
.valid
)
3227 make_tag (token_name
.buffer
, token_name
.len
, isfun
, token
.line
,
3228 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3229 else /* this case is optimised away if !DEBUG */
3230 make_tag (concat ("INVALID TOKEN:-->", token_name
.buffer
, ""),
3231 token_name
.len
+ 17, isfun
, token
.line
,
3232 token
.offset
+token
.length
+1, token
.lineno
, token
.linepos
);
3234 token
.valid
= FALSE
;
3240 * This routine finds functions, variables, typedefs,
3241 * #define's, enum constants and struct/union/enum definitions in
3242 * C syntax and adds them to the list.
3245 C_entries (c_ext
, inf
)
3246 int c_ext
; /* extension of C */
3247 FILE *inf
; /* input file */
3249 register char c
; /* latest char read; '\0' for end of line */
3250 register char *lp
; /* pointer one beyond the character `c' */
3251 int curndx
, newndx
; /* indices for current and new lb */
3252 register int tokoff
; /* offset in line of start of current token */
3253 register int toklen
; /* length of current token */
3254 char *qualifier
; /* string used to qualify names */
3255 int qlen
; /* length of qualifier */
3256 int bracelev
; /* current brace level */
3257 int bracketlev
; /* current bracket level */
3258 int parlev
; /* current parenthesis level */
3259 int attrparlev
; /* __attribute__ parenthesis level */
3260 int templatelev
; /* current template level */
3261 int typdefbracelev
; /* bracelev where a typedef struct body begun */
3262 bool incomm
, inquote
, inchar
, quotednl
, midtoken
;
3263 bool yacc_rules
; /* in the rules part of a yacc file */
3264 struct tok savetoken
= {0}; /* token saved during preprocessor handling */
3267 linebuffer_init (&lbs
[0].lb
);
3268 linebuffer_init (&lbs
[1].lb
);
3269 if (cstack
.size
== 0)
3271 cstack
.size
= (DEBUG
) ? 1 : 4;
3273 cstack
.cname
= xnew (cstack
.size
, char *);
3274 cstack
.bracelev
= xnew (cstack
.size
, int);
3277 tokoff
= toklen
= typdefbracelev
= 0; /* keep compiler quiet */
3278 curndx
= newndx
= 0;
3282 fvdef
= fvnone
; fvextern
= FALSE
; typdef
= tnone
;
3283 structdef
= snone
; definedef
= dnone
; objdef
= onone
;
3285 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3286 token
.valid
= savetoken
.valid
= FALSE
;
3287 bracelev
= bracketlev
= parlev
= attrparlev
= templatelev
= 0;
3289 { qualifier
= "."; qlen
= 1; }
3291 { qualifier
= "::"; qlen
= 2; }
3299 /* If we are at the end of the line, the next character is a
3300 '\0'; do not skip it, because it is what tells us
3301 to read the next line. */
3322 /* Newlines inside comments do not end macro definitions in
3324 CNL_SAVE_DEFINEDEF ();
3337 /* Newlines inside strings do not end macro definitions
3338 in traditional cpp, even though compilers don't
3339 usually accept them. */
3340 CNL_SAVE_DEFINEDEF ();
3350 /* Hmmm, something went wrong. */
3359 else if (bracketlev
> 0)
3364 if (--bracketlev
> 0)
3368 CNL_SAVE_DEFINEDEF ();
3396 if (fvdef
!= finlist
&& fvdef
!= fignore
&& fvdef
!=vignore
)
3409 else if (/* cplpl && */ *lp
== '/')
3415 if ((c_ext
& YACC
) && *lp
== '%')
3417 /* Entering or exiting rules section in yacc file. */
3419 definedef
= dnone
; fvdef
= fvnone
; fvextern
= FALSE
;
3420 typdef
= tnone
; structdef
= snone
;
3421 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
3423 yacc_rules
= !yacc_rules
;
3429 if (definedef
== dnone
)
3432 bool cpptoken
= TRUE
;
3434 /* Look back on this line. If all blanks, or nonblanks
3435 followed by an end of comment, this is a preprocessor
3437 for (cp
= newlb
.buffer
; cp
< lp
-1; cp
++)
3440 if (*cp
== '*' && *(cp
+1) == '/')
3449 definedef
= dsharpseen
;
3450 } /* if (definedef == dnone) */
3458 /* Consider token only if some involved conditions are satisfied. */
3459 if (typdef
!= tignore
3460 && definedef
!= dignorerest
3463 && (definedef
!= dnone
3464 || structdef
!= scolonseen
)
3471 if (c
== ':' && *lp
== ':' && begtoken (lp
[1]))
3472 /* This handles :: in the middle,
3473 but not at the beginning of an identifier.
3474 Also, space-separated :: is not recognised. */
3476 if (c_ext
& C_AUTO
) /* automatic detection of C++ */
3477 c_ext
= (c_ext
| C_PLPL
) & ~C_AUTO
;
3481 goto still_in_token
;
3485 bool funorvar
= FALSE
;
3488 || consider_token (newlb
.buffer
+ tokoff
, toklen
, c
,
3489 &c_ext
, bracelev
, parlev
,
3492 if (fvdef
== foperator
)
3495 lp
= skip_spaces (lp
-1);
3499 && !iswhite (*lp
) && *lp
!= '(')
3502 toklen
+= lp
- oldlp
;
3504 token
.named
= FALSE
;
3506 && nestlev
> 0 && definedef
== dnone
)
3507 /* in struct body */
3509 write_classname (&token_name
, qualifier
);
3510 linebuffer_setlen (&token_name
,
3511 token_name
.len
+qlen
+toklen
);
3512 strcat (token_name
.buffer
, qualifier
);
3513 strncat (token_name
.buffer
,
3514 newlb
.buffer
+ tokoff
, toklen
);
3517 else if (objdef
== ocatseen
)
3518 /* Objective C category */
3520 int len
= strlen (objtag
) + 2 + toklen
;
3521 linebuffer_setlen (&token_name
, len
);
3522 strcpy (token_name
.buffer
, objtag
);
3523 strcat (token_name
.buffer
, "(");
3524 strncat (token_name
.buffer
,
3525 newlb
.buffer
+ tokoff
, toklen
);
3526 strcat (token_name
.buffer
, ")");
3529 else if (objdef
== omethodtag
3530 || objdef
== omethodparm
)
3531 /* Objective C method */
3535 else if (fvdef
== fdefunname
)
3536 /* GNU DEFUN and similar macros */
3538 bool defun
= (newlb
.buffer
[tokoff
] == 'F');
3542 /* Rewrite the tag so that emacs lisp DEFUNs
3543 can be found by their elisp name */
3549 linebuffer_setlen (&token_name
, len
);
3550 strncpy (token_name
.buffer
,
3551 newlb
.buffer
+ off
, len
);
3552 token_name
.buffer
[len
] = '\0';
3555 if (token_name
.buffer
[len
] == '_')
3556 token_name
.buffer
[len
] = '-';
3557 token
.named
= defun
;
3561 linebuffer_setlen (&token_name
, toklen
);
3562 strncpy (token_name
.buffer
,
3563 newlb
.buffer
+ tokoff
, toklen
);
3564 token_name
.buffer
[toklen
] = '\0';
3565 /* Name macros and members. */
3566 token
.named
= (structdef
== stagseen
3567 || typdef
== ttypeseen
3570 && definedef
== dignorerest
)
3572 && definedef
== dnone
3573 && structdef
== snone
3576 token
.lineno
= lineno
;
3577 token
.offset
= tokoff
;
3578 token
.length
= toklen
;
3579 token
.line
= newlb
.buffer
;
3580 token
.linepos
= newlinepos
;
3583 if (definedef
== dnone
3584 && (fvdef
== fvnameseen
3585 || fvdef
== foperator
3586 || structdef
== stagseen
3588 || typdef
== ttypeseen
3589 || objdef
!= onone
))
3591 if (current_lb_is_new
)
3592 switch_line_buffers ();
3594 else if (definedef
!= dnone
3595 || fvdef
== fdefunname
3597 make_C_tag (funorvar
);
3599 else /* not yacc and consider_token failed */
3601 if (inattribute
&& fvdef
== fignore
)
3603 /* We have just met __attribute__ after a
3604 function parameter list: do not tag the
3611 } /* if (endtoken (c)) */
3612 else if (intoken (c
))
3618 } /* if (midtoken) */
3619 else if (begtoken (c
))
3627 /* This prevents tagging fb in
3628 void (__attribute__((noreturn)) *fb) (void);
3629 Fixing this is not easy and not very important. */
3633 if (plainc
|| declarations
)
3635 make_C_tag (TRUE
); /* a function */
3640 if (structdef
== stagseen
&& !cjava
)
3642 popclass_above (bracelev
);
3650 if (!yacc_rules
|| lp
== newlb
.buffer
+ 1)
3652 tokoff
= lp
- 1 - newlb
.buffer
;
3657 } /* if (begtoken) */
3658 } /* if must look at token */
3661 /* Detect end of line, colon, comma, semicolon and various braces
3662 after having handled a token.*/
3668 if (yacc_rules
&& token
.offset
== 0 && token
.valid
)
3670 make_C_tag (FALSE
); /* a yacc function */
3673 if (definedef
!= dnone
)
3679 make_C_tag (TRUE
); /* an Objective C class */
3683 objdef
= omethodcolon
;
3684 linebuffer_setlen (&token_name
, token_name
.len
+ 1);
3685 strcat (token_name
.buffer
, ":");
3688 if (structdef
== stagseen
)
3690 structdef
= scolonseen
;
3693 /* Should be useless, but may be work as a safety net. */
3694 if (cplpl
&& fvdef
== flistseen
)
3696 make_C_tag (TRUE
); /* a function */
3702 if (definedef
!= dnone
|| inattribute
)
3708 make_C_tag (FALSE
); /* a typedef */
3718 if (typdef
== tignore
|| cplpl
)
3722 if ((globals
&& bracelev
== 0 && (!fvextern
|| declarations
))
3723 || (members
&& instruct
))
3724 make_C_tag (FALSE
); /* a variable */
3727 token
.valid
= FALSE
;
3731 && (cplpl
|| !instruct
)
3732 && (typdef
== tnone
|| (typdef
!= tignore
&& instruct
)))
3734 && plainc
&& instruct
))
3735 make_C_tag (TRUE
); /* a function */
3741 && cplpl
&& structdef
== stagseen
)
3742 make_C_tag (FALSE
); /* forward declaration */
3744 token
.valid
= FALSE
;
3745 } /* switch (fvdef) */
3751 if (structdef
== stagseen
)
3755 if (definedef
!= dnone
|| inattribute
)
3761 make_C_tag (TRUE
); /* an Objective C method */
3782 && (!fvextern
|| declarations
))
3783 || (members
&& instruct
)))
3784 make_C_tag (FALSE
); /* a variable */
3787 if ((declarations
&& typdef
== tnone
&& !instruct
)
3788 || (members
&& typdef
!= tignore
&& instruct
))
3790 make_C_tag (TRUE
); /* a function */
3793 else if (!declarations
)
3795 token
.valid
= FALSE
;
3800 if (structdef
== stagseen
)
3804 if (definedef
!= dnone
|| inattribute
)
3806 if (structdef
== stagseen
)
3813 make_C_tag (FALSE
); /* a typedef */
3825 if ((members
&& bracelev
== 1)
3826 || (globals
&& bracelev
== 0
3827 && (!fvextern
|| declarations
)))
3828 make_C_tag (FALSE
); /* a variable */
3842 if (definedef
!= dnone
)
3844 if (objdef
== otagseen
&& parlev
== 0)
3845 objdef
= oparenseen
;
3849 if (typdef
== ttypeseen
3853 /* This handles constructs like:
3854 typedef void OperatorFun (int fun); */
3873 if (--attrparlev
== 0)
3874 inattribute
= FALSE
;
3877 if (definedef
!= dnone
)
3879 if (objdef
== ocatseen
&& parlev
== 1)
3881 make_C_tag (TRUE
); /* an Objective C category */
3895 || typdef
== ttypeseen
))
3898 make_C_tag (FALSE
); /* a typedef */
3901 else if (parlev
< 0) /* can happen due to ill-conceived #if's. */
3905 if (definedef
!= dnone
)
3907 if (typdef
== ttypeseen
)
3909 /* Whenever typdef is set to tinbody (currently only
3910 here), typdefbracelev should be set to bracelev. */
3912 typdefbracelev
= bracelev
;
3917 make_C_tag (TRUE
); /* a function */
3926 make_C_tag (TRUE
); /* an Objective C class */
3931 make_C_tag (TRUE
); /* an Objective C method */
3935 /* Neutralize `extern "C" {' grot. */
3936 if (bracelev
== 0 && structdef
== snone
&& nestlev
== 0
3944 case skeyseen
: /* unnamed struct */
3945 pushclass_above (bracelev
, NULL
, 0);
3948 case stagseen
: /* named struct or enum */
3949 case scolonseen
: /* a class */
3950 pushclass_above (bracelev
,token
.line
+token
.offset
, token
.length
);
3952 make_C_tag (FALSE
); /* a struct or enum */
3958 if (definedef
!= dnone
)
3960 if (fvdef
== fstartlist
)
3962 fvdef
= fvnone
; /* avoid tagging `foo' in `foo (*bar()) ()' */
3963 token
.valid
= FALSE
;
3967 if (definedef
!= dnone
)
3970 if (!ignoreindent
&& lp
== newlb
.buffer
+ 1)
3973 token
.valid
= FALSE
; /* unexpected value, token unreliable */
3974 bracelev
= 0; /* reset brace level if first column */
3975 parlev
= 0; /* also reset paren level, just in case... */
3977 else if (bracelev
< 0)
3979 token
.valid
= FALSE
; /* something gone amiss, token unreliable */
3982 if (bracelev
== 0 && fvdef
== vignore
)
3983 fvdef
= fvnone
; /* end of function */
3984 popclass_above (bracelev
);
3986 /* Only if typdef == tinbody is typdefbracelev significant. */
3987 if (typdef
== tinbody
&& bracelev
<= typdefbracelev
)
3989 assert (bracelev
== typdefbracelev
);
3994 if (definedef
!= dnone
)
4004 if ((members
&& bracelev
== 1)
4005 || (globals
&& bracelev
== 0 && (!fvextern
|| declarations
)))
4006 make_C_tag (FALSE
); /* a variable */
4014 && (structdef
== stagseen
|| fvdef
== fvnameseen
))
4021 if (templatelev
> 0)
4029 if (objdef
== oinbody
&& bracelev
== 0)
4031 objdef
= omethodsign
;
4036 case '#': case '~': case '&': case '%': case '/':
4037 case '|': case '^': case '!': case '.': case '?':
4038 if (definedef
!= dnone
)
4040 /* These surely cannot follow a function tag in C. */
4053 if (objdef
== otagseen
)
4055 make_C_tag (TRUE
); /* an Objective C class */
4058 /* If a macro spans multiple lines don't reset its state. */
4060 CNL_SAVE_DEFINEDEF ();
4066 } /* while not eof */
4068 free (lbs
[0].lb
.buffer
);
4069 free (lbs
[1].lb
.buffer
);
4073 * Process either a C++ file or a C file depending on the setting
4077 default_C_entries (inf
)
4080 C_entries (cplusplus
? C_PLPL
: C_AUTO
, inf
);
4083 /* Always do plain C. */
4085 plain_C_entries (inf
)
4091 /* Always do C++. */
4093 Cplusplus_entries (inf
)
4096 C_entries (C_PLPL
, inf
);
4099 /* Always do Java. */
4104 C_entries (C_JAVA
, inf
);
4112 C_entries (C_STAR
, inf
);
4115 /* Always do Yacc. */
4120 C_entries (YACC
, inf
);
4124 /* Useful macros. */
4125 #define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \
4126 for (; /* loop initialization */ \
4127 !feof (file_pointer) /* loop test */ \
4128 && /* instructions at start of loop */ \
4129 (readline (&line_buffer, file_pointer), \
4130 char_pointer = line_buffer.buffer, \
4134 #define LOOKING_AT(cp, kw) /* kw is the keyword, a literal string */ \
4135 ((assert("" kw), TRUE) /* syntax error if not a literal string */ \
4136 && strneq ((cp), kw, sizeof(kw)-1) /* cp points at kw */ \
4137 && notinname ((cp)[sizeof(kw)-1]) /* end of kw */ \
4138 && ((cp) = skip_spaces((cp)+sizeof(kw)-1))) /* skip spaces */
4140 /* Similar to LOOKING_AT but does not use notinname, does not skip */
4141 #define LOOKING_AT_NOCASE(cp, kw) /* the keyword is a literal string */ \
4142 ((assert("" kw), TRUE) /* syntax error if not a literal string */ \
4143 && strncaseeq ((cp), kw, sizeof(kw)-1) /* cp points at kw */ \
4144 && ((cp) += sizeof(kw)-1)) /* skip spaces */
4147 * Read a file, but do no processing. This is used to do regexp
4148 * matching on files that have no language defined.
4151 just_read_file (inf
)
4154 register char *dummy
;
4156 LOOP_ON_INPUT_LINES (inf
, lb
, dummy
)
4161 /* Fortran parsing */
4163 static void F_takeprec
__P((void));
4164 static void F_getit
__P((FILE *));
4169 dbp
= skip_spaces (dbp
);
4173 dbp
= skip_spaces (dbp
);
4174 if (strneq (dbp
, "(*)", 3))
4179 if (!ISDIGIT (*dbp
))
4181 --dbp
; /* force failure */
4186 while (ISDIGIT (*dbp
));
4195 dbp
= skip_spaces (dbp
);
4198 readline (&lb
, inf
);
4203 dbp
= skip_spaces (dbp
);
4205 if (!ISALPHA (*dbp
) && *dbp
!= '_' && *dbp
!= '$')
4207 for (cp
= dbp
+ 1; *cp
!= '\0' && intoken (*cp
); cp
++)
4209 make_tag (dbp
, cp
-dbp
, TRUE
,
4210 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4215 Fortran_functions (inf
)
4218 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4221 dbp
++; /* Ratfor escape to fortran */
4222 dbp
= skip_spaces (dbp
);
4225 switch (lowcase (*dbp
))
4228 if (nocase_tail ("integer"))
4232 if (nocase_tail ("real"))
4236 if (nocase_tail ("logical"))
4240 if (nocase_tail ("complex") || nocase_tail ("character"))
4244 if (nocase_tail ("double"))
4246 dbp
= skip_spaces (dbp
);
4249 if (nocase_tail ("precision"))
4255 dbp
= skip_spaces (dbp
);
4258 switch (lowcase (*dbp
))
4261 if (nocase_tail ("function"))
4265 if (nocase_tail ("subroutine"))
4269 if (nocase_tail ("entry"))
4273 if (nocase_tail ("blockdata") || nocase_tail ("block data"))
4275 dbp
= skip_spaces (dbp
);
4276 if (*dbp
== '\0') /* assume un-named */
4277 make_tag ("blockdata", 9, TRUE
,
4278 lb
.buffer
, dbp
- lb
.buffer
, lineno
, linecharno
);
4280 F_getit (inf
); /* look for name */
4291 * Philippe Waroquiers (1998)
4294 static void Ada_getit
__P((FILE *, char *));
4296 /* Once we are positioned after an "interesting" keyword, let's get
4297 the real tag value necessary. */
4299 Ada_getit (inf
, name_qualifier
)
4301 char *name_qualifier
;
4309 dbp
= skip_spaces (dbp
);
4311 || (dbp
[0] == '-' && dbp
[1] == '-'))
4313 readline (&lb
, inf
);
4316 switch (lowcase(*dbp
))
4319 if (nocase_tail ("body"))
4321 /* Skipping body of procedure body or package body or ....
4322 resetting qualifier to body instead of spec. */
4323 name_qualifier
= "/b";
4328 /* Skipping type of task type or protected type ... */
4329 if (nocase_tail ("type"))
4336 for (cp
= dbp
; *cp
!= '\0' && *cp
!= '"'; cp
++)
4341 dbp
= skip_spaces (dbp
);
4344 && (ISALPHA (*cp
) || ISDIGIT (*cp
) || *cp
== '_' || *cp
== '.'));
4352 name
= concat (dbp
, name_qualifier
, "");
4354 make_tag (name
, strlen (name
), TRUE
,
4355 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4367 bool inquote
= FALSE
;
4368 bool skip_till_semicolumn
= FALSE
;
4370 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4372 while (*dbp
!= '\0')
4374 /* Skip a string i.e. "abcd". */
4375 if (inquote
|| (*dbp
== '"'))
4377 dbp
= etags_strchr ((inquote
) ? dbp
: dbp
+1, '"');
4382 continue; /* advance char */
4387 break; /* advance line */
4391 /* Skip comments. */
4392 if (dbp
[0] == '-' && dbp
[1] == '-')
4393 break; /* advance line */
4395 /* Skip character enclosed in single quote i.e. 'a'
4396 and skip single quote starting an attribute i.e. 'Image. */
4405 if (skip_till_semicolumn
)
4408 skip_till_semicolumn
= FALSE
;
4410 continue; /* advance char */
4413 /* Search for beginning of a token. */
4414 if (!begtoken (*dbp
))
4417 continue; /* advance char */
4420 /* We are at the beginning of a token. */
4421 switch (lowcase(*dbp
))
4424 if (!packages_only
&& nocase_tail ("function"))
4425 Ada_getit (inf
, "/f");
4427 break; /* from switch */
4428 continue; /* advance char */
4430 if (!packages_only
&& nocase_tail ("procedure"))
4431 Ada_getit (inf
, "/p");
4432 else if (nocase_tail ("package"))
4433 Ada_getit (inf
, "/s");
4434 else if (nocase_tail ("protected")) /* protected type */
4435 Ada_getit (inf
, "/t");
4437 break; /* from switch */
4438 continue; /* advance char */
4441 if (typedefs
&& !packages_only
&& nocase_tail ("use"))
4443 /* when tagging types, avoid tagging use type Pack.Typename;
4444 for this, we will skip everything till a ; */
4445 skip_till_semicolumn
= TRUE
;
4446 continue; /* advance char */
4450 if (!packages_only
&& nocase_tail ("task"))
4451 Ada_getit (inf
, "/k");
4452 else if (typedefs
&& !packages_only
&& nocase_tail ("type"))
4454 Ada_getit (inf
, "/t");
4455 while (*dbp
!= '\0')
4459 break; /* from switch */
4460 continue; /* advance char */
4463 /* Look for the end of the token. */
4464 while (!endtoken (*dbp
))
4467 } /* advance char */
4468 } /* advance line */
4473 * Unix and microcontroller assembly tag handling
4474 * Labels: /^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]/
4475 * Idea by Bob Weiner, Motorola Inc. (1994)
4483 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4485 /* If first char is alphabetic or one of [_.$], test for colon
4486 following identifier. */
4487 if (ISALPHA (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4489 /* Read past label. */
4491 while (ISALNUM (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
4493 if (*cp
== ':' || iswhite (*cp
))
4494 /* Found end of label, so copy it and add it to the table. */
4495 make_tag (lb
.buffer
, cp
- lb
.buffer
, TRUE
,
4496 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4504 * Perl sub names: /^sub[ \t\n]+[^ \t\n{]+/
4505 * Perl variable names: /^(my|local).../
4506 * Original code by Bart Robinson <lomew@cs.utah.edu> (1995)
4507 * Additions by Michael Ernst <mernst@alum.mit.edu> (1997)
4508 * Ideas by Kai Großjohann <Kai.Grossjohann@CS.Uni-Dortmund.DE> (2001)
4511 Perl_functions (inf
)
4514 char *package
= savestr ("main"); /* current package name */
4517 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4519 cp
= skip_spaces (cp
);
4521 if (LOOKING_AT (cp
, "package"))
4524 get_tag (cp
, &package
);
4526 else if (LOOKING_AT (cp
, "sub"))
4531 while (!notinname (*cp
))
4534 continue; /* nothing found */
4535 if ((pos
= etags_strchr (sp
, ':')) != NULL
4536 && pos
< cp
&& pos
[1] == ':')
4537 /* The name is already qualified. */
4538 make_tag (sp
, cp
- sp
, TRUE
,
4539 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4543 char savechar
, *name
;
4547 name
= concat (package
, "::", sp
);
4549 make_tag (name
, strlen(name
), TRUE
,
4550 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4554 else if (globals
) /* only if we are tagging global vars */
4556 /* Skip a qualifier, if any. */
4557 bool qual
= LOOKING_AT (cp
, "my") || LOOKING_AT (cp
, "local");
4558 /* After "my" or "local", but before any following paren or space. */
4559 char *varstart
= cp
;
4561 if (qual
/* should this be removed? If yes, how? */
4562 && (*cp
== '$' || *cp
== '@' || *cp
== '%'))
4567 while (ISALNUM (*cp
) || *cp
== '_');
4571 /* Should be examining a variable list at this point;
4572 could insist on seeing an open parenthesis. */
4573 while (*cp
!= '\0' && *cp
!= ';' && *cp
!= '=' && *cp
!= ')')
4579 make_tag (varstart
, cp
- varstart
, FALSE
,
4580 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4589 * Look for /^[\t]*def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/
4590 * Idea by Eric S. Raymond <esr@thyrsus.com> (1997)
4591 * More ideas by seb bacon <seb@jamkit.com> (2002)
4594 Python_functions (inf
)
4599 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4601 cp
= skip_spaces (cp
);
4602 if (LOOKING_AT (cp
, "def") || LOOKING_AT (cp
, "class"))
4605 while (!notinname (*cp
) && *cp
!= ':')
4607 make_tag (name
, cp
- name
, TRUE
,
4608 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4617 * - /^[ \t]*function[ \t\n]+[^ \t\n(]+/
4618 * - /^[ \t]*class[ \t\n]+[^ \t\n]+/
4619 * - /^[ \t]*define\(\"[^\"]+/
4620 * Only with --members:
4621 * - /^[ \t]*var[ \t\n]+\$[^ \t\n=;]/
4622 * Idea by Diez B. Roggisch (2001)
4628 register char *cp
, *name
;
4629 bool search_identifier
= FALSE
;
4631 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
4633 cp
= skip_spaces (cp
);
4635 if (search_identifier
4638 while (!notinname (*cp
))
4640 make_tag (name
, cp
- name
, TRUE
,
4641 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4642 search_identifier
= FALSE
;
4644 else if (LOOKING_AT (cp
, "function"))
4647 cp
= skip_spaces (cp
+1);
4651 while (!notinname (*cp
))
4653 make_tag (name
, cp
- name
, TRUE
,
4654 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4657 search_identifier
= TRUE
;
4659 else if (LOOKING_AT (cp
, "class"))
4664 while (*cp
!= '\0' && !iswhite (*cp
))
4666 make_tag (name
, cp
- name
, FALSE
,
4667 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4670 search_identifier
= TRUE
;
4672 else if (strneq (cp
, "define", 6)
4673 && (cp
= skip_spaces (cp
+6))
4675 && (*cp
== '"' || *cp
== '\''))
4679 while (*cp
!= quote
&& *cp
!= '\0')
4681 make_tag (name
, cp
- name
, FALSE
,
4682 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4685 && LOOKING_AT (cp
, "var")
4689 while (!notinname(*cp
))
4691 make_tag (name
, cp
- name
, FALSE
,
4692 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
4699 * Cobol tag functions
4700 * We could look for anything that could be a paragraph name.
4701 * i.e. anything that starts in column 8 is one word and ends in a full stop.
4702 * Idea by Corny de Souza (1993)
4705 Cobol_paragraphs (inf
)
4708 register char *bp
, *ep
;
4710 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4716 /* If eoln, compiler option or comment ignore whole line. */
4717 if (bp
[-1] != ' ' || !ISALNUM (bp
[0]))
4720 for (ep
= bp
; ISALNUM (*ep
) || *ep
== '-'; ep
++)
4723 make_tag (bp
, ep
- bp
, TRUE
,
4724 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
4731 * Ideas by Assar Westerlund <assar@sics.se> (2001)
4734 Makefile_targets (inf
)
4739 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
4741 if (*bp
== '\t' || *bp
== '#')
4743 while (*bp
!= '\0' && *bp
!= '=' && *bp
!= ':')
4745 if (*bp
== ':' || (globals
&& *bp
== '='))
4747 /* We should detect if there is more than one tag, but we do not.
4748 We just skip initial and final spaces. */
4749 char * namestart
= skip_spaces (lb
.buffer
);
4750 while (--bp
> namestart
)
4751 if (!notinname (*bp
))
4753 make_tag (namestart
, bp
- namestart
+ 1, TRUE
,
4754 lb
.buffer
, bp
- lb
.buffer
+ 2, lineno
, linecharno
);
4762 * Original code by Mosur K. Mohan (1989)
4764 * Locates tags for procedures & functions. Doesn't do any type- or
4765 * var-definitions. It does look for the keyword "extern" or
4766 * "forward" immediately following the procedure statement; if found,
4767 * the tag is skipped.
4770 Pascal_functions (inf
)
4773 linebuffer tline
; /* mostly copied from C_entries */
4775 int save_lineno
, namelen
, taglen
;
4778 bool /* each of these flags is TRUE if: */
4779 incomment
, /* point is inside a comment */
4780 inquote
, /* point is inside '..' string */
4781 get_tagname
, /* point is after PROCEDURE/FUNCTION
4782 keyword, so next item = potential tag */
4783 found_tag
, /* point is after a potential tag */
4784 inparms
, /* point is within parameter-list */
4785 verify_tag
; /* point has passed the parm-list, so the
4786 next token will determine whether this
4787 is a FORWARD/EXTERN to be ignored, or
4788 whether it is a real tag */
4790 save_lcno
= save_lineno
= namelen
= taglen
= 0; /* keep compiler quiet */
4791 name
= NULL
; /* keep compiler quiet */
4794 linebuffer_init (&tline
);
4796 incomment
= inquote
= FALSE
;
4797 found_tag
= FALSE
; /* have a proc name; check if extern */
4798 get_tagname
= FALSE
; /* found "procedure" keyword */
4799 inparms
= FALSE
; /* found '(' after "proc" */
4800 verify_tag
= FALSE
; /* check if "extern" is ahead */
4803 while (!feof (inf
)) /* long main loop to get next char */
4806 if (c
== '\0') /* if end of line */
4808 readline (&lb
, inf
);
4812 if (!((found_tag
&& verify_tag
)
4814 c
= *dbp
++; /* only if don't need *dbp pointing
4815 to the beginning of the name of
4816 the procedure or function */
4820 if (c
== '}') /* within { } comments */
4822 else if (c
== '*' && *dbp
== ')') /* within (* *) comments */
4839 inquote
= TRUE
; /* found first quote */
4841 case '{': /* found open { comment */
4845 if (*dbp
== '*') /* found open (* comment */
4850 else if (found_tag
) /* found '(' after tag, i.e., parm-list */
4853 case ')': /* end of parms list */
4858 if (found_tag
&& !inparms
) /* end of proc or fn stmt */
4865 if (found_tag
&& verify_tag
&& (*dbp
!= ' '))
4867 /* Check if this is an "extern" declaration. */
4870 if (lowcase (*dbp
== 'e'))
4872 if (nocase_tail ("extern")) /* superfluous, really! */
4878 else if (lowcase (*dbp
) == 'f')
4880 if (nocase_tail ("forward")) /* check for forward reference */
4886 if (found_tag
&& verify_tag
) /* not external proc, so make tag */
4890 make_tag (name
, namelen
, TRUE
,
4891 tline
.buffer
, taglen
, save_lineno
, save_lcno
);
4895 if (get_tagname
) /* grab name of proc or fn */
4902 /* Find block name. */
4903 for (cp
= dbp
+ 1; *cp
!= '\0' && !endtoken (*cp
); cp
++)
4906 /* Save all values for later tagging. */
4907 linebuffer_setlen (&tline
, lb
.len
);
4908 strcpy (tline
.buffer
, lb
.buffer
);
4909 save_lineno
= lineno
;
4910 save_lcno
= linecharno
;
4911 name
= tline
.buffer
+ (dbp
- lb
.buffer
);
4913 taglen
= cp
- lb
.buffer
+ 1;
4915 dbp
= cp
; /* set dbp to e-o-token */
4916 get_tagname
= FALSE
;
4920 /* And proceed to check for "extern". */
4922 else if (!incomment
&& !inquote
&& !found_tag
)
4924 /* Check for proc/fn keywords. */
4925 switch (lowcase (c
))
4928 if (nocase_tail ("rocedure")) /* c = 'p', dbp has advanced */
4932 if (nocase_tail ("unction"))
4937 } /* while not eof */
4939 free (tline
.buffer
);
4944 * Lisp tag functions
4945 * look for (def or (DEF, quote or QUOTE
4948 static void L_getit
__P((void));
4953 if (*dbp
== '\'') /* Skip prefix quote */
4955 else if (*dbp
== '(')
4958 /* Try to skip "(quote " */
4959 if (!LOOKING_AT (dbp
, "quote") && !LOOKING_AT (dbp
, "QUOTE"))
4960 /* Ok, then skip "(" before name in (defstruct (foo)) */
4961 dbp
= skip_spaces (dbp
);
4963 get_tag (dbp
, NULL
);
4967 Lisp_functions (inf
)
4970 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
4975 if (strneq (dbp
+1, "def", 3) || strneq (dbp
+1, "DEF", 3))
4977 dbp
= skip_non_spaces (dbp
);
4978 dbp
= skip_spaces (dbp
);
4983 /* Check for (foo::defmumble name-defined ... */
4986 while (!notinname (*dbp
) && *dbp
!= ':');
4991 while (*dbp
== ':');
4993 if (strneq (dbp
, "def", 3) || strneq (dbp
, "DEF", 3))
4995 dbp
= skip_non_spaces (dbp
);
4996 dbp
= skip_spaces (dbp
);
5006 * Lua script language parsing
5007 * Original code by David A. Capello <dacap@users.sourceforge.net> (2004)
5009 * "function" and "local function" are tags if they start at column 1.
5017 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5019 if (bp
[0] != 'f' && bp
[0] != 'l')
5022 (void)LOOKING_AT (bp
, "local"); /* skip possible "local" */
5024 if (LOOKING_AT (bp
, "function"))
5032 * Just look for lines where the first character is '/'
5033 * Also look at "defineps" for PSWrap
5035 * Richard Mlynarik <mly@adoc.xerox.com> (1997)
5036 * Masatake Yamato <masata-y@is.aist-nara.ac.jp> (1999)
5042 register char *bp
, *ep
;
5044 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5049 *ep
!= '\0' && *ep
!= ' ' && *ep
!= '{';
5052 make_tag (bp
, ep
- bp
, TRUE
,
5053 lb
.buffer
, ep
- lb
.buffer
+ 1, lineno
, linecharno
);
5055 else if (LOOKING_AT (bp
, "defineps"))
5063 * Ignore anything after \ followed by space or in ( )
5064 * Look for words defined by :
5065 * Look for constant, code, create, defer, value, and variable
5066 * OBP extensions: Look for buffer:, field,
5067 * Ideas by Eduardo Horvath <eeh@netbsd.org> (2004)
5075 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5076 while ((bp
= skip_spaces (bp
))[0] != '\0')
5077 if (bp
[0] == '\\' && iswhite(bp
[1]))
5078 break; /* read next line */
5079 else if (bp
[0] == '(' && iswhite(bp
[1]))
5080 do /* skip to ) or eol */
5082 while (*bp
!= ')' && *bp
!= '\0');
5083 else if ((bp
[0] == ':' && iswhite(bp
[1]) && bp
++)
5084 || LOOKING_AT_NOCASE (bp
, "constant")
5085 || LOOKING_AT_NOCASE (bp
, "code")
5086 || LOOKING_AT_NOCASE (bp
, "create")
5087 || LOOKING_AT_NOCASE (bp
, "defer")
5088 || LOOKING_AT_NOCASE (bp
, "value")
5089 || LOOKING_AT_NOCASE (bp
, "variable")
5090 || LOOKING_AT_NOCASE (bp
, "buffer:")
5091 || LOOKING_AT_NOCASE (bp
, "field"))
5092 get_tag (skip_spaces (bp
), NULL
); /* Yay! A definition! */
5094 bp
= skip_non_spaces (bp
);
5099 * Scheme tag functions
5100 * look for (def... xyzzy
5102 * (def ... ((...(xyzzy ....
5104 * Original code by Ken Haase (1985?)
5107 Scheme_functions (inf
)
5112 LOOP_ON_INPUT_LINES (inf
, lb
, bp
)
5114 if (strneq (bp
, "(def", 4) || strneq (bp
, "(DEF", 4))
5116 bp
= skip_non_spaces (bp
+4);
5117 /* Skip over open parens and white space */
5118 while (notinname (*bp
))
5122 if (LOOKING_AT (bp
, "(SET!") || LOOKING_AT (bp
, "(set!"))
5128 /* Find tags in TeX and LaTeX input files. */
5130 /* TEX_toktab is a table of TeX control sequences that define tags.
5131 * Each entry records one such control sequence.
5133 * Original code from who knows whom.
5135 * Stefan Monnier (2002)
5138 static linebuffer
*TEX_toktab
= NULL
; /* Table with tag tokens */
5140 /* Default set of control sequences to put into TEX_toktab.
5141 The value of environment var TEXTAGS is prepended to this. */
5142 static char *TEX_defenv
= "\
5143 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\
5144 :part:appendix:entry:index:def\
5145 :newcommand:renewcommand:newenvironment:renewenvironment";
5147 static void TEX_mode
__P((FILE *));
5148 static void TEX_decode_env
__P((char *, char *));
5150 static char TEX_esc
= '\\';
5151 static char TEX_opgrp
= '{';
5152 static char TEX_clgrp
= '}';
5155 * TeX/LaTeX scanning loop.
5164 /* Select either \ or ! as escape character. */
5167 /* Initialize token table once from environment. */
5168 if (TEX_toktab
== NULL
)
5169 TEX_decode_env ("TEXTAGS", TEX_defenv
);
5171 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5173 /* Look at each TEX keyword in line. */
5176 /* Look for a TEX escape. */
5177 while (*cp
++ != TEX_esc
)
5178 if (cp
[-1] == '\0' || cp
[-1] == '%')
5181 for (key
= TEX_toktab
; key
->buffer
!= NULL
; key
++)
5182 if (strneq (cp
, key
->buffer
, key
->len
))
5185 int namelen
, linelen
;
5188 cp
= skip_spaces (cp
+ key
->len
);
5189 if (*cp
== TEX_opgrp
)
5195 (!iswhite (*p
) && *p
!= '#' &&
5196 *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
);
5201 if (!opgrp
|| *p
== TEX_clgrp
)
5203 while (*p
!= '\0' && *p
!= TEX_opgrp
&& *p
!= TEX_clgrp
)
5205 linelen
= p
- lb
.buffer
+ 1;
5207 make_tag (cp
, namelen
, TRUE
,
5208 lb
.buffer
, linelen
, lineno
, linecharno
);
5209 goto tex_next_line
; /* We only tag a line once */
5217 #define TEX_LESC '\\'
5218 #define TEX_SESC '!'
5220 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
5221 chars accordingly. */
5228 while ((c
= getc (inf
)) != EOF
)
5230 /* Skip to next line if we hit the TeX comment char. */
5232 while (c
!= '\n' && c
!= EOF
)
5234 else if (c
== TEX_LESC
|| c
== TEX_SESC
)
5250 /* If the input file is compressed, inf is a pipe, and rewind may fail.
5251 No attempt is made to correct the situation. */
5255 /* Read environment and prepend it to the default string.
5256 Build token table. */
5258 TEX_decode_env (evarname
, defenv
)
5262 register char *env
, *p
;
5265 /* Append default string to environment. */
5266 env
= getenv (evarname
);
5272 env
= concat (oldenv
, defenv
, "");
5275 /* Allocate a token table */
5276 for (len
= 1, p
= env
; p
;)
5277 if ((p
= etags_strchr (p
, ':')) && *++p
!= '\0')
5279 TEX_toktab
= xnew (len
, linebuffer
);
5281 /* Unpack environment string into token table. Be careful about */
5282 /* zero-length strings (leading ':', "::" and trailing ':') */
5283 for (i
= 0; *env
!= '\0';)
5285 p
= etags_strchr (env
, ':');
5286 if (!p
) /* End of environment string. */
5287 p
= env
+ strlen (env
);
5289 { /* Only non-zero strings. */
5290 TEX_toktab
[i
].buffer
= savenstr (env
, p
- env
);
5291 TEX_toktab
[i
].len
= p
- env
;
5298 TEX_toktab
[i
].buffer
= NULL
; /* Mark end of table. */
5299 TEX_toktab
[i
].len
= 0;
5306 /* Texinfo support. Dave Love, Mar. 2000. */
5312 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5313 if (LOOKING_AT (cp
, "@node"))
5316 while (*cp
!= '\0' && *cp
!= ',')
5318 make_tag (start
, cp
- start
, TRUE
,
5319 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
5326 * Contents of <title>, <h1>, <h2>, <h3> are tags.
5327 * Contents of <a name=xxx> are tags with name xxx.
5329 * Francesco Potortì, 2002.
5335 bool getnext
= FALSE
; /* next text outside of HTML tags is a tag */
5336 bool skiptag
= FALSE
; /* skip to the end of the current HTML tag */
5337 bool intag
= FALSE
; /* inside an html tag, looking for ID= */
5338 bool inanchor
= FALSE
; /* when INTAG, is an anchor, look for NAME= */
5342 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5344 LOOP_ON_INPUT_LINES (inf
, lb
, dbp
)
5345 for (;;) /* loop on the same line */
5347 if (skiptag
) /* skip HTML tag */
5349 while (*dbp
!= '\0' && *dbp
!= '>')
5355 continue; /* look on the same line */
5357 break; /* go to next line */
5360 else if (intag
) /* look for "name=" or "id=" */
5362 while (*dbp
!= '\0' && *dbp
!= '>'
5363 && lowcase (*dbp
) != 'n' && lowcase (*dbp
) != 'i')
5366 break; /* go to next line */
5371 continue; /* look on the same line */
5373 if ((inanchor
&& LOOKING_AT_NOCASE (dbp
, "name="))
5374 || LOOKING_AT_NOCASE (dbp
, "id="))
5376 bool quoted
= (dbp
[0] == '"');
5379 for (end
= ++dbp
; *end
!= '\0' && *end
!= '"'; end
++)
5382 for (end
= dbp
; *end
!= '\0' && intoken (*end
); end
++)
5384 linebuffer_setlen (&token_name
, end
- dbp
);
5385 strncpy (token_name
.buffer
, dbp
, end
- dbp
);
5386 token_name
.buffer
[end
- dbp
] = '\0';
5389 intag
= FALSE
; /* we found what we looked for */
5390 skiptag
= TRUE
; /* skip to the end of the tag */
5391 getnext
= TRUE
; /* then grab the text */
5392 continue; /* look on the same line */
5397 else if (getnext
) /* grab next tokens and tag them */
5399 dbp
= skip_spaces (dbp
);
5401 break; /* go to next line */
5405 inanchor
= (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]));
5406 continue; /* look on the same line */
5409 for (end
= dbp
+ 1; *end
!= '\0' && *end
!= '<'; end
++)
5411 make_tag (token_name
.buffer
, token_name
.len
, TRUE
,
5412 dbp
, end
- dbp
, lineno
, linecharno
);
5413 linebuffer_setlen (&token_name
, 0); /* no name in buffer */
5415 break; /* go to next line */
5418 else /* look for an interesting HTML tag */
5420 while (*dbp
!= '\0' && *dbp
!= '<')
5423 break; /* go to next line */
5425 if (lowcase (dbp
[1]) == 'a' && !intoken (dbp
[2]))
5428 continue; /* look on the same line */
5430 else if (LOOKING_AT_NOCASE (dbp
, "<title>")
5431 || LOOKING_AT_NOCASE (dbp
, "<h1>")
5432 || LOOKING_AT_NOCASE (dbp
, "<h2>")
5433 || LOOKING_AT_NOCASE (dbp
, "<h3>"))
5437 continue; /* look on the same line */
5448 * Assumes that the predicate or rule starts at column 0.
5449 * Only the first clause of a predicate or rule is added.
5450 * Original code by Sunichirou Sugou (1989)
5451 * Rewritten by Anders Lindgren (1996)
5453 static int prolog_pr
__P((char *, char *));
5454 static void prolog_skip_comment
__P((linebuffer
*, FILE *));
5455 static int prolog_atom
__P((char *, int));
5458 Prolog_functions (inf
)
5469 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5471 if (cp
[0] == '\0') /* Empty line */
5473 else if (iswhite (cp
[0])) /* Not a predicate */
5475 else if (cp
[0] == '/' && cp
[1] == '*') /* comment. */
5476 prolog_skip_comment (&lb
, inf
);
5477 else if ((len
= prolog_pr (cp
, last
)) > 0)
5479 /* Predicate or rule. Store the function name so that we
5480 only generate a tag for the first clause. */
5482 last
= xnew(len
+ 1, char);
5483 else if (len
+ 1 > allocated
)
5484 xrnew (last
, len
+ 1, char);
5485 allocated
= len
+ 1;
5486 strncpy (last
, cp
, len
);
5496 prolog_skip_comment (plb
, inf
)
5504 for (cp
= plb
->buffer
; *cp
!= '\0'; cp
++)
5505 if (cp
[0] == '*' && cp
[1] == '/')
5507 readline (plb
, inf
);
5513 * A predicate or rule definition is added if it matches:
5514 * <beginning of line><Prolog Atom><whitespace>(
5515 * or <beginning of line><Prolog Atom><whitespace>:-
5517 * It is added to the tags database if it doesn't match the
5518 * name of the previous clause header.
5520 * Return the size of the name of the predicate or rule, or 0 if no
5526 char *last
; /* Name of last clause. */
5531 pos
= prolog_atom (s
, 0);
5536 pos
= skip_spaces (s
+ pos
) - s
;
5539 || (s
[pos
] == '(' && (pos
+= 1))
5540 || (s
[pos
] == ':' && s
[pos
+ 1] == '-' && (pos
+= 2)))
5541 && (last
== NULL
/* save only the first clause */
5542 || len
!= (int)strlen (last
)
5543 || !strneq (s
, last
, len
)))
5545 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5553 * Consume a Prolog atom.
5554 * Return the number of bytes consumed, or -1 if there was an error.
5556 * A prolog atom, in this context, could be one of:
5557 * - An alphanumeric sequence, starting with a lower case letter.
5558 * - A quoted arbitrary string. Single quotes can escape themselves.
5559 * Backslash quotes everything.
5562 prolog_atom (s
, pos
)
5570 if (ISLOWER(s
[pos
]) || (s
[pos
] == '_'))
5572 /* The atom is unquoted. */
5574 while (ISALNUM(s
[pos
]) || (s
[pos
] == '_'))
5578 return pos
- origpos
;
5580 else if (s
[pos
] == '\'')
5591 pos
++; /* A double quote */
5593 else if (s
[pos
] == '\0')
5594 /* Multiline quoted atoms are ignored. */
5596 else if (s
[pos
] == '\\')
5598 if (s
[pos
+1] == '\0')
5605 return pos
- origpos
;
5613 * Support for Erlang
5615 * Generates tags for functions, defines, and records.
5616 * Assumes that Erlang functions start at column 0.
5617 * Original code by Anders Lindgren (1996)
5619 static int erlang_func
__P((char *, char *));
5620 static void erlang_attribute
__P((char *));
5621 static int erlang_atom
__P((char *));
5624 Erlang_functions (inf
)
5635 LOOP_ON_INPUT_LINES (inf
, lb
, cp
)
5637 if (cp
[0] == '\0') /* Empty line */
5639 else if (iswhite (cp
[0])) /* Not function nor attribute */
5641 else if (cp
[0] == '%') /* comment */
5643 else if (cp
[0] == '"') /* Sometimes, strings start in column one */
5645 else if (cp
[0] == '-') /* attribute, e.g. "-define" */
5647 erlang_attribute (cp
);
5654 else if ((len
= erlang_func (cp
, last
)) > 0)
5657 * Function. Store the function name so that we only
5658 * generates a tag for the first clause.
5661 last
= xnew (len
+ 1, char);
5662 else if (len
+ 1 > allocated
)
5663 xrnew (last
, len
+ 1, char);
5664 allocated
= len
+ 1;
5665 strncpy (last
, cp
, len
);
5675 * A function definition is added if it matches:
5676 * <beginning of line><Erlang Atom><whitespace>(
5678 * It is added to the tags database if it doesn't match the
5679 * name of the previous clause header.
5681 * Return the size of the name of the function, or 0 if no function
5685 erlang_func (s
, last
)
5687 char *last
; /* Name of last clause. */
5692 pos
= erlang_atom (s
);
5697 pos
= skip_spaces (s
+ pos
) - s
;
5699 /* Save only the first clause. */
5702 || len
!= (int)strlen (last
)
5703 || !strneq (s
, last
, len
)))
5705 make_tag (s
, len
, TRUE
, s
, pos
, lineno
, linecharno
);
5714 * Handle attributes. Currently, tags are generated for defines
5717 * They are on the form:
5718 * -define(foo, bar).
5719 * -define(Foo(M, N), M+N).
5720 * -record(graph, {vtab = notable, cyclic = true}).
5723 erlang_attribute (s
)
5728 if ((LOOKING_AT (cp
, "-define") || LOOKING_AT (cp
, "-record"))
5731 int len
= erlang_atom (skip_spaces (cp
));
5733 make_tag (cp
, len
, TRUE
, s
, cp
+ len
- s
, lineno
, linecharno
);
5740 * Consume an Erlang atom (or variable).
5741 * Return the number of bytes consumed, or -1 if there was an error.
5749 if (ISALPHA (s
[pos
]) || s
[pos
] == '_')
5751 /* The atom is unquoted. */
5754 while (ISALNUM (s
[pos
]) || s
[pos
] == '_');
5756 else if (s
[pos
] == '\'')
5758 for (pos
++; s
[pos
] != '\''; pos
++)
5759 if (s
[pos
] == '\0' /* multiline quoted atoms are ignored */
5760 || (s
[pos
] == '\\' && s
[++pos
] == '\0'))
5769 static char *scan_separators
__P((char *));
5770 static void add_regex
__P((char *, language
*));
5771 static char *substitute
__P((char *, char *, struct re_registers
*));
5774 * Take a string like "/blah/" and turn it into "blah", verifying
5775 * that the first and last characters are the same, and handling
5776 * quoted separator characters. Actually, stops on the occurrence of
5777 * an unquoted separator. Also process \t, \n, etc. and turn into
5778 * appropriate characters. Works in place. Null terminates name string.
5779 * Returns pointer to terminating separator, or NULL for
5780 * unterminated regexps.
5783 scan_separators (name
)
5787 char *copyto
= name
;
5788 bool quoted
= FALSE
;
5790 for (++name
; *name
!= '\0'; ++name
)
5796 case 'a': *copyto
++ = '\007'; break; /* BEL (bell) */
5797 case 'b': *copyto
++ = '\b'; break; /* BS (back space) */
5798 case 'd': *copyto
++ = 0177; break; /* DEL (delete) */
5799 case 'e': *copyto
++ = 033; break; /* ESC (delete) */
5800 case 'f': *copyto
++ = '\f'; break; /* FF (form feed) */
5801 case 'n': *copyto
++ = '\n'; break; /* NL (new line) */
5802 case 'r': *copyto
++ = '\r'; break; /* CR (carriage return) */
5803 case 't': *copyto
++ = '\t'; break; /* TAB (horizontal tab) */
5804 case 'v': *copyto
++ = '\v'; break; /* VT (vertical tab) */
5810 /* Something else is quoted, so preserve the quote. */
5818 else if (*name
== '\\')
5820 else if (*name
== sep
)
5826 name
= NULL
; /* signal unterminated regexp */
5828 /* Terminate copied string. */
5833 /* Look at the argument of --regex or --no-regex and do the right
5834 thing. Same for each line of a regexp file. */
5836 analyse_regex (regex_arg
)
5839 if (regex_arg
== NULL
)
5841 free_regexps (); /* --no-regex: remove existing regexps */
5845 /* A real --regexp option or a line in a regexp file. */
5846 switch (regex_arg
[0])
5848 /* Comments in regexp file or null arg to --regex. */
5854 /* Read a regex file. This is recursive and may result in a
5855 loop, which will stop when the file descriptors are exhausted. */
5859 linebuffer regexbuf
;
5860 char *regexfile
= regex_arg
+ 1;
5862 /* regexfile is a file containing regexps, one per line. */
5863 regexfp
= fopen (regexfile
, "r");
5864 if (regexfp
== NULL
)
5869 linebuffer_init (®exbuf
);
5870 while (readline_internal (®exbuf
, regexfp
) > 0)
5871 analyse_regex (regexbuf
.buffer
);
5872 free (regexbuf
.buffer
);
5877 /* Regexp to be used for a specific language only. */
5881 char *lang_name
= regex_arg
+ 1;
5884 for (cp
= lang_name
; *cp
!= '}'; cp
++)
5887 error ("unterminated language name in regex: %s", regex_arg
);
5891 lang
= get_language_from_langname (lang_name
);
5894 add_regex (cp
, lang
);
5898 /* Regexp to be used for any language. */
5900 add_regex (regex_arg
, NULL
);
5905 /* Separate the regexp pattern, compile it,
5906 and care for optional name and modifiers. */
5908 add_regex (regexp_pattern
, lang
)
5909 char *regexp_pattern
;
5912 static struct re_pattern_buffer zeropattern
;
5913 char sep
, *pat
, *name
, *modifiers
;
5915 struct re_pattern_buffer
*patbuf
;
5918 force_explicit_name
= TRUE
, /* do not use implicit tag names */
5919 ignore_case
= FALSE
, /* case is significant */
5920 multi_line
= FALSE
, /* matches are done one line at a time */
5921 single_line
= FALSE
; /* dot does not match newline */
5924 if (strlen(regexp_pattern
) < 3)
5926 error ("null regexp", (char *)NULL
);
5929 sep
= regexp_pattern
[0];
5930 name
= scan_separators (regexp_pattern
);
5933 error ("%s: unterminated regexp", regexp_pattern
);
5938 error ("null name for regexp \"%s\"", regexp_pattern
);
5941 modifiers
= scan_separators (name
);
5942 if (modifiers
== NULL
) /* no terminating separator --> no name */
5948 modifiers
+= 1; /* skip separator */
5950 /* Parse regex modifiers. */
5951 for (; modifiers
[0] != '\0'; modifiers
++)
5952 switch (modifiers
[0])
5955 if (modifiers
== name
)
5956 error ("forcing explicit tag name but no name, ignoring", NULL
);
5957 force_explicit_name
= TRUE
;
5967 need_filebuf
= TRUE
;
5972 wrongmod
[0] = modifiers
[0];
5974 error ("invalid regexp modifier `%s', ignoring", wrongmod
);
5979 patbuf
= xnew (1, struct re_pattern_buffer
);
5980 *patbuf
= zeropattern
;
5983 static char lc_trans
[CHARS
];
5985 for (i
= 0; i
< CHARS
; i
++)
5986 lc_trans
[i
] = lowcase (i
);
5987 patbuf
->translate
= lc_trans
; /* translation table to fold case */
5991 pat
= concat ("^", regexp_pattern
, ""); /* anchor to beginning of line */
5993 pat
= regexp_pattern
;
5996 re_set_syntax (RE_SYNTAX_EMACS
| RE_DOT_NEWLINE
);
5998 re_set_syntax (RE_SYNTAX_EMACS
);
6000 err
= re_compile_pattern (pat
, strlen (regexp_pattern
), patbuf
);
6005 error ("%s while compiling pattern", err
);
6010 p_head
= xnew (1, regexp
);
6011 p_head
->pattern
= savestr (regexp_pattern
);
6012 p_head
->p_next
= rp
;
6013 p_head
->lang
= lang
;
6014 p_head
->pat
= patbuf
;
6015 p_head
->name
= savestr (name
);
6016 p_head
->error_signaled
= FALSE
;
6017 p_head
->force_explicit_name
= force_explicit_name
;
6018 p_head
->ignore_case
= ignore_case
;
6019 p_head
->multi_line
= multi_line
;
6023 * Do the substitutions indicated by the regular expression and
6027 substitute (in
, out
, regs
)
6029 struct re_registers
*regs
;
6032 int size
, dig
, diglen
;
6035 size
= strlen (out
);
6037 /* Pass 1: figure out how much to allocate by finding all \N strings. */
6038 if (out
[size
- 1] == '\\')
6039 fatal ("pattern error in \"%s\"", out
);
6040 for (t
= etags_strchr (out
, '\\');
6042 t
= etags_strchr (t
+ 2, '\\'))
6046 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
6052 /* Allocate space and do the substitutions. */
6054 result
= xnew (size
+ 1, char);
6056 for (t
= result
; *out
!= '\0'; out
++)
6057 if (*out
== '\\' && ISDIGIT (*++out
))
6060 diglen
= regs
->end
[dig
] - regs
->start
[dig
];
6061 strncpy (t
, in
+ regs
->start
[dig
], diglen
);
6068 assert (t
<= result
+ size
);
6069 assert (t
- result
== (int)strlen (result
));
6074 /* Deallocate all regexps. */
6079 while (p_head
!= NULL
)
6081 rp
= p_head
->p_next
;
6082 free (p_head
->pattern
);
6083 free (p_head
->name
);
6091 * Reads the whole file as a single string from `filebuf' and looks for
6092 * multi-line regular expressions, creating tags on matches.
6093 * readline already dealt with normal regexps.
6095 * Idea by Ben Wing <ben@666.com> (2002).
6098 regex_tag_multiline ()
6100 char *buffer
= filebuf
.buffer
;
6104 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
6108 if (!rp
->multi_line
)
6109 continue; /* skip normal regexps */
6111 /* Generic initialisations before parsing file from memory. */
6112 lineno
= 1; /* reset global line number */
6113 charno
= 0; /* reset global char number */
6114 linecharno
= 0; /* reset global char number of line start */
6116 /* Only use generic regexps or those for the current language. */
6117 if (rp
->lang
!= NULL
&& rp
->lang
!= curfdp
->lang
)
6120 while (match
>= 0 && match
< filebuf
.len
)
6122 match
= re_search (rp
->pat
, buffer
, filebuf
.len
, charno
,
6123 filebuf
.len
- match
, &rp
->regs
);
6128 if (!rp
->error_signaled
)
6130 error ("regexp stack overflow while matching \"%s\"",
6132 rp
->error_signaled
= TRUE
;
6139 if (match
== rp
->regs
.end
[0])
6141 if (!rp
->error_signaled
)
6143 error ("regexp matches the empty string: \"%s\"",
6145 rp
->error_signaled
= TRUE
;
6147 match
= -3; /* exit from while loop */
6151 /* Match occurred. Construct a tag. */
6152 while (charno
< rp
->regs
.end
[0])
6153 if (buffer
[charno
++] == '\n')
6154 lineno
++, linecharno
= charno
;
6156 if (name
[0] == '\0')
6158 else /* make a named tag */
6159 name
= substitute (buffer
, rp
->name
, &rp
->regs
);
6160 if (rp
->force_explicit_name
)
6161 /* Force explicit tag name, if a name is there. */
6162 pfnote (name
, TRUE
, buffer
+ linecharno
,
6163 charno
- linecharno
+ 1, lineno
, linecharno
);
6165 make_tag (name
, strlen (name
), TRUE
, buffer
+ linecharno
,
6166 charno
- linecharno
+ 1, lineno
, linecharno
);
6178 register int len
= 0;
6180 while (*cp
!= '\0' && lowcase (*cp
) == lowcase (dbp
[len
]))
6182 if (*cp
== '\0' && !intoken (dbp
[len
]))
6191 get_tag (bp
, namepp
)
6195 register char *cp
= bp
;
6199 /* Go till you get to white space or a syntactic break */
6200 for (cp
= bp
+ 1; !notinname (*cp
); cp
++)
6202 make_tag (bp
, cp
- bp
, TRUE
,
6203 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
6207 *namepp
= savenstr (bp
, cp
- bp
);
6211 * Read a line of text from `stream' into `lbp', excluding the
6212 * newline or CR-NL, if any. Return the number of characters read from
6213 * `stream', which is the length of the line including the newline.
6215 * On DOS or Windows we do not count the CR character, if any before the
6216 * NL, in the returned length; this mirrors the behavior of Emacs on those
6217 * platforms (for text files, it translates CR-NL to NL as it reads in the
6220 * If multi-line regular expressions are requested, each line read is
6221 * appended to `filebuf'.
6224 readline_internal (lbp
, stream
)
6226 register FILE *stream
;
6228 char *buffer
= lbp
->buffer
;
6229 register char *p
= lbp
->buffer
;
6230 register char *pend
;
6233 pend
= p
+ lbp
->size
; /* Separate to avoid 386/IX compiler bug. */
6237 register int c
= getc (stream
);
6240 /* We're at the end of linebuffer: expand it. */
6242 xrnew (buffer
, lbp
->size
, char);
6243 p
+= buffer
- lbp
->buffer
;
6244 pend
= buffer
+ lbp
->size
;
6245 lbp
->buffer
= buffer
;
6255 if (p
> buffer
&& p
[-1] == '\r')
6259 /* Assume CRLF->LF translation will be performed by Emacs
6260 when loading this file, so CRs won't appear in the buffer.
6261 It would be cleaner to compensate within Emacs;
6262 however, Emacs does not know how many CRs were deleted
6263 before any given point in the file. */
6278 lbp
->len
= p
- buffer
;
6280 if (need_filebuf
/* we need filebuf for multi-line regexps */
6281 && chars_deleted
> 0) /* not at EOF */
6283 while (filebuf
.size
<= filebuf
.len
+ lbp
->len
+ 1) /* +1 for \n */
6285 /* Expand filebuf. */
6287 xrnew (filebuf
.buffer
, filebuf
.size
, char);
6289 strncpy (filebuf
.buffer
+ filebuf
.len
, lbp
->buffer
, lbp
->len
);
6290 filebuf
.len
+= lbp
->len
;
6291 filebuf
.buffer
[filebuf
.len
++] = '\n';
6292 filebuf
.buffer
[filebuf
.len
] = '\0';
6295 return lbp
->len
+ chars_deleted
;
6299 * Like readline_internal, above, but in addition try to match the
6300 * input line against relevant regular expressions and manage #line
6304 readline (lbp
, stream
)
6310 linecharno
= charno
; /* update global char number of line start */
6311 result
= readline_internal (lbp
, stream
); /* read line */
6312 lineno
+= 1; /* increment global line number */
6313 charno
+= result
; /* increment global char number */
6315 /* Honour #line directives. */
6316 if (!no_line_directive
)
6318 static bool discard_until_line_directive
;
6320 /* Check whether this is a #line directive. */
6321 if (result
> 12 && strneq (lbp
->buffer
, "#line ", 6))
6326 if (sscanf (lbp
->buffer
, "#line %u \"%n", &lno
, &start
) >= 1
6327 && start
> 0) /* double quote character found */
6329 char *endp
= lbp
->buffer
+ start
;
6331 while ((endp
= etags_strchr (endp
, '"')) != NULL
6332 && endp
[-1] == '\\')
6335 /* Ok, this is a real #line directive. Let's deal with it. */
6337 char *taggedabsname
; /* absolute name of original file */
6338 char *taggedfname
; /* name of original file as given */
6339 char *name
; /* temp var */
6341 discard_until_line_directive
= FALSE
; /* found it */
6342 name
= lbp
->buffer
+ start
;
6344 canonicalize_filename (name
); /* for DOS */
6345 taggedabsname
= absolute_filename (name
, tagfiledir
);
6346 if (filename_is_absolute (name
)
6347 || filename_is_absolute (curfdp
->infname
))
6348 taggedfname
= savestr (taggedabsname
);
6350 taggedfname
= relative_filename (taggedabsname
,tagfiledir
);
6352 if (streq (curfdp
->taggedfname
, taggedfname
))
6353 /* The #line directive is only a line number change. We
6354 deal with this afterwards. */
6357 /* The tags following this #line directive should be
6358 attributed to taggedfname. In order to do this, set
6359 curfdp accordingly. */
6361 fdesc
*fdp
; /* file description pointer */
6363 /* Go look for a file description already set up for the
6364 file indicated in the #line directive. If there is
6365 one, use it from now until the next #line
6367 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6368 if (streq (fdp
->infname
, curfdp
->infname
)
6369 && streq (fdp
->taggedfname
, taggedfname
))
6370 /* If we remove the second test above (after the &&)
6371 then all entries pertaining to the same file are
6372 coalesced in the tags file. If we use it, then
6373 entries pertaining to the same file but generated
6374 from different files (via #line directives) will
6375 go into separate sections in the tags file. These
6376 alternatives look equivalent. The first one
6377 destroys some apparently useless information. */
6383 /* Else, if we already tagged the real file, skip all
6384 input lines until the next #line directive. */
6385 if (fdp
== NULL
) /* not found */
6386 for (fdp
= fdhead
; fdp
!= NULL
; fdp
= fdp
->next
)
6387 if (streq (fdp
->infabsname
, taggedabsname
))
6389 discard_until_line_directive
= TRUE
;
6393 /* Else create a new file description and use that from
6394 now on, until the next #line directive. */
6395 if (fdp
== NULL
) /* not found */
6398 fdhead
= xnew (1, fdesc
);
6399 *fdhead
= *curfdp
; /* copy curr. file description */
6401 fdhead
->infname
= savestr (curfdp
->infname
);
6402 fdhead
->infabsname
= savestr (curfdp
->infabsname
);
6403 fdhead
->infabsdir
= savestr (curfdp
->infabsdir
);
6404 fdhead
->taggedfname
= taggedfname
;
6405 fdhead
->usecharno
= FALSE
;
6406 fdhead
->prop
= NULL
;
6407 fdhead
->written
= FALSE
;
6411 free (taggedabsname
);
6413 readline (lbp
, stream
);
6415 } /* if a real #line directive */
6416 } /* if #line is followed by a a number */
6417 } /* if line begins with "#line " */
6419 /* If we are here, no #line directive was found. */
6420 if (discard_until_line_directive
)
6424 /* Do a tail recursion on ourselves, thus discarding the contents
6425 of the line buffer. */
6426 readline (lbp
, stream
);
6430 discard_until_line_directive
= FALSE
;
6433 } /* if #line directives should be considered */
6440 /* Match against relevant regexps. */
6442 for (rp
= p_head
; rp
!= NULL
; rp
= rp
->p_next
)
6444 /* Only use generic regexps or those for the current language.
6445 Also do not use multiline regexps, which is the job of
6446 regex_tag_multiline. */
6447 if ((rp
->lang
!= NULL
&& rp
->lang
!= fdhead
->lang
)
6451 match
= re_match (rp
->pat
, lbp
->buffer
, lbp
->len
, 0, &rp
->regs
);
6456 if (!rp
->error_signaled
)
6458 error ("regexp stack overflow while matching \"%s\"",
6460 rp
->error_signaled
= TRUE
;
6467 /* Empty string matched. */
6468 if (!rp
->error_signaled
)
6470 error ("regexp matches the empty string: \"%s\"", rp
->pattern
);
6471 rp
->error_signaled
= TRUE
;
6475 /* Match occurred. Construct a tag. */
6477 if (name
[0] == '\0')
6479 else /* make a named tag */
6480 name
= substitute (lbp
->buffer
, rp
->name
, &rp
->regs
);
6481 if (rp
->force_explicit_name
)
6482 /* Force explicit tag name, if a name is there. */
6483 pfnote (name
, TRUE
, lbp
->buffer
, match
, lineno
, linecharno
);
6485 make_tag (name
, strlen (name
), TRUE
,
6486 lbp
->buffer
, match
, lineno
, linecharno
);
6495 * Return a pointer to a space of size strlen(cp)+1 allocated
6496 * with xnew where the string CP has been copied.
6502 return savenstr (cp
, strlen (cp
));
6506 * Return a pointer to a space of size LEN+1 allocated with xnew where
6507 * the string CP has been copied for at most the first LEN characters.
6516 dp
= xnew (len
+ 1, char);
6517 strncpy (dp
, cp
, len
);
6523 * Return the ptr in sp at which the character c last
6524 * appears; NULL if not found
6526 * Identical to POSIX strrchr, included for portability.
6529 etags_strrchr (sp
, c
)
6530 register const char *sp
;
6533 register const char *r
;
6545 * Return the ptr in sp at which the character c first
6546 * appears; NULL if not found
6548 * Identical to POSIX strchr, included for portability.
6551 etags_strchr (sp
, c
)
6552 register const char *sp
;
6564 * Compare two strings, ignoring case for alphabetic characters.
6566 * Same as BSD's strcasecmp, included for portability.
6569 etags_strcasecmp (s1
, s2
)
6570 register const char *s1
;
6571 register const char *s2
;
6574 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6575 ? lowcase (*s1
) == lowcase (*s2
)
6579 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6580 ? lowcase (*s1
) - lowcase (*s2
)
6585 * Compare two strings, ignoring case for alphabetic characters.
6586 * Stop after a given number of characters
6588 * Same as BSD's strncasecmp, included for portability.
6591 etags_strncasecmp (s1
, s2
, n
)
6592 register const char *s1
;
6593 register const char *s2
;
6596 while (*s1
!= '\0' && n
-- > 0
6597 && (ISALPHA (*s1
) && ISALPHA (*s2
)
6598 ? lowcase (*s1
) == lowcase (*s2
)
6605 return (ISALPHA (*s1
) && ISALPHA (*s2
)
6606 ? lowcase (*s1
) - lowcase (*s2
)
6610 /* Skip spaces (end of string is not space), return new pointer. */
6615 while (iswhite (*cp
))
6620 /* Skip non spaces, except end of string, return new pointer. */
6622 skip_non_spaces (cp
)
6625 while (*cp
!= '\0' && !iswhite (*cp
))
6630 /* Print error message and exit. */
6636 exit (EXIT_FAILURE
);
6644 exit (EXIT_FAILURE
);
6648 suggest_asking_for_help ()
6650 fprintf (stderr
, "\tTry `%s %s' for a complete list of options.\n",
6651 progname
, NO_LONG_OPTIONS
? "-h" : "--help");
6652 exit (EXIT_FAILURE
);
6655 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
6658 const char *s1
, *s2
;
6660 fprintf (stderr
, "%s: ", progname
);
6661 fprintf (stderr
, s1
, s2
);
6662 fprintf (stderr
, "\n");
6665 /* Return a newly-allocated string whose contents
6666 concatenate those of s1, s2, s3. */
6671 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
6672 char *result
= xnew (len1
+ len2
+ len3
+ 1, char);
6674 strcpy (result
, s1
);
6675 strcpy (result
+ len1
, s2
);
6676 strcpy (result
+ len1
+ len2
, s3
);
6677 result
[len1
+ len2
+ len3
] = '\0';
6683 /* Does the same work as the system V getcwd, but does not need to
6684 guess the buffer size in advance. */
6690 char *path
= xnew (bufsize
, char);
6692 while (getcwd (path
, bufsize
) == NULL
)
6694 if (errno
!= ERANGE
)
6698 path
= xnew (bufsize
, char);
6701 canonicalize_filename (path
);
6704 #else /* not HAVE_GETCWD */
6707 char *p
, path
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
6711 for (p
= path
; *p
!= '\0'; p
++)
6717 return strdup (path
);
6718 #else /* not MSDOS */
6722 linebuffer_init (&path
);
6723 pipe
= (FILE *) popen ("pwd 2>/dev/null", "r");
6724 if (pipe
== NULL
|| readline_internal (&path
, pipe
) == 0)
6729 #endif /* not MSDOS */
6730 #endif /* not HAVE_GETCWD */
6733 /* Return a newly allocated string containing the file name of FILE
6734 relative to the absolute directory DIR (which should end with a slash). */
6736 relative_filename (file
, dir
)
6739 char *fp
, *dp
, *afn
, *res
;
6742 /* Find the common root of file and dir (with a trailing slash). */
6743 afn
= absolute_filename (file
, cwd
);
6746 while (*fp
++ == *dp
++)
6748 fp
--, dp
--; /* back to the first differing char */
6750 if (fp
== afn
&& afn
[0] != '/') /* cannot build a relative name */
6753 do /* look at the equal chars until '/' */
6757 /* Build a sequence of "../" strings for the resulting relative file name. */
6759 while ((dp
= etags_strchr (dp
+ 1, '/')) != NULL
)
6761 res
= xnew (3*i
+ strlen (fp
+ 1) + 1, char);
6764 strcat (res
, "../");
6766 /* Add the file name relative to the common root of file and dir. */
6767 strcat (res
, fp
+ 1);
6773 /* Return a newly allocated string containing the absolute file name
6774 of FILE given DIR (which should end with a slash). */
6776 absolute_filename (file
, dir
)
6779 char *slashp
, *cp
, *res
;
6781 if (filename_is_absolute (file
))
6782 res
= savestr (file
);
6784 /* We don't support non-absolute file names with a drive
6785 letter, like `d:NAME' (it's too much hassle). */
6786 else if (file
[1] == ':')
6787 fatal ("%s: relative file names with drive letters not supported", file
);
6790 res
= concat (dir
, file
, "");
6792 /* Delete the "/dirname/.." and "/." substrings. */
6793 slashp
= etags_strchr (res
, '/');
6794 while (slashp
!= NULL
&& slashp
[0] != '\0')
6796 if (slashp
[1] == '.')
6798 if (slashp
[2] == '.'
6799 && (slashp
[3] == '/' || slashp
[3] == '\0'))
6804 while (cp
>= res
&& !filename_is_absolute (cp
));
6806 cp
= slashp
; /* the absolute name begins with "/.." */
6808 /* Under MSDOS and NT we get `d:/NAME' as absolute
6809 file name, so the luser could say `d:/../NAME'.
6810 We silently treat this as `d:/NAME'. */
6811 else if (cp
[0] != '/')
6814 strcpy (cp
, slashp
+ 3);
6818 else if (slashp
[2] == '/' || slashp
[2] == '\0')
6820 strcpy (slashp
, slashp
+ 2);
6825 slashp
= etags_strchr (slashp
+ 1, '/');
6828 if (res
[0] == '\0') /* just a safety net: should never happen */
6831 return savestr ("/");
6837 /* Return a newly allocated string containing the absolute
6838 file name of dir where FILE resides given DIR (which should
6839 end with a slash). */
6841 absolute_dirname (file
, dir
)
6847 canonicalize_filename (file
);
6848 slashp
= etags_strrchr (file
, '/');
6850 return savestr (dir
);
6853 res
= absolute_filename (file
, dir
);
6859 /* Whether the argument string is an absolute file name. The argument
6860 string must have been canonicalized with canonicalize_filename. */
6862 filename_is_absolute (fn
)
6865 return (fn
[0] == '/'
6867 || (ISALPHA(fn
[0]) && fn
[1] == ':' && fn
[2] == '/')
6872 /* Translate backslashes into slashes. Works in place. */
6874 canonicalize_filename (fn
)
6878 /* Canonicalize drive letter case. */
6879 if (fn
[0] != '\0' && fn
[1] == ':' && ISLOWER (fn
[0]))
6880 fn
[0] = upcase (fn
[0]);
6881 /* Convert backslashes to slashes. */
6882 for (; *fn
!= '\0'; fn
++)
6887 fn
= NULL
; /* shut up the compiler */
6892 /* Initialize a linebuffer for use */
6894 linebuffer_init (lbp
)
6897 lbp
->size
= (DEBUG
) ? 3 : 200;
6898 lbp
->buffer
= xnew (lbp
->size
, char);
6899 lbp
->buffer
[0] = '\0';
6903 /* Set the minimum size of a string contained in a linebuffer. */
6905 linebuffer_setlen (lbp
, toksize
)
6909 while (lbp
->size
<= toksize
)
6912 xrnew (lbp
->buffer
, lbp
->size
, char);
6917 /* Like malloc but get fatal error if memory is exhausted. */
6922 PTR result
= (PTR
) malloc (size
);
6924 fatal ("virtual memory exhausted", (char *)NULL
);
6929 xrealloc (ptr
, size
)
6933 PTR result
= (PTR
) realloc (ptr
, size
);
6935 fatal ("virtual memory exhausted", (char *)NULL
);
6941 * indent-tabs-mode: t
6944 * c-font-lock-extra-types: ("FILE" "bool" "language" "linebuffer" "fdesc" "node" "regexp")
6945 * c-file-style: "gnu"
6949 /* arch-tag: 8a9b748d-390c-4922-99db-2eeefa921051
6950 (do not change this comment) */
6952 /* etags.c ends here */