1 /* Tags file maker to go with GNU Emacs
2 Copyright (C) 1984,87,88,89,93,94 Free Software Foundation, Inc. and Ken Arnold
3 This file is not considered part of GNU Emacs.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 * Ctags originally by Ken Arnold.
22 * Fortran added by Jim Kleckner.
23 * Ed Pelegri-Llopart added C typedefs.
24 * Gnu Emacs TAGS format and modifications by RMS?
25 * Sam Kendall added C++.
26 * Francesco Potorti` reorganised C and C++ based on work by Joe Wells.
28 * Regexp tags by Tom Tromey.
31 * Francesco Potorti` (pot@cnuce.cnr.it) is the current maintainer.
34 char pot_etags_version
[] = "@(#) pot revision number is 11.15";
38 #include <sys/param.h>
45 #define MAXPATHLEN _MAX_PATH
50 /* On some systems, Emacs defines static as nothing for the sake
51 of unexec. We don't want that here since we don't use unexec. */
61 #include <sys/types.h>
64 #if !defined (S_ISREG) && defined (S_IFREG)
65 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
72 #endif /* ETAGS_REGEXPS */
77 /* Define CTAGS to make the program "ctags" compatible with the usual one.
78 Let it undefined to make the program "etags", which makes emacs-style
79 tag tables and tags typedefs, #defines and struct/union/enum by default. */
87 /* Exit codes for success and failure. */
97 #define C_PLPL 0x00001 /* C++ */
98 #define C_STAR 0x00003 /* C* */
99 #define YACC 0x10000 /* yacc file */
101 #define streq(s,t) (strcmp (s, t) == 0)
102 #define strneq(s,t,n) (strncmp (s, t, n) == 0)
104 #define iswhite(arg) (_wht[arg]) /* T if char is white */
105 #define begtoken(arg) (_btk[arg]) /* T if char can start token */
106 #define intoken(arg) (_itk[arg]) /* T if char can be in token */
107 #define endtoken(arg) (_etk[arg]) /* T if char ends tokens */
110 * xnew -- allocate storage
112 * SYNOPSIS: Type *xnew (int n, Type);
114 #define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type)))
119 { /* sorting structure */
120 char *name
; /* function or type name */
121 char *file
; /* file name */
122 logical is_func
; /* use pattern or line no */
123 logical named
; /* list name separately */
124 logical been_warned
; /* set if noticed dup */
125 int lno
; /* line number tag is on */
126 long cno
; /* character number line starts on */
127 char *pat
; /* search pattern */
128 struct nd_st
*left
, *right
; /* left and right sons */
131 extern char *getenv ();
134 char *savenstr (), *savestr ();
135 char *etags_strchr (), *etags_strrchr ();
136 char *etags_getcwd ();
137 char *relative_filename (), *absolute_filename (), *absolute_dirname ();
138 char *xmalloc (), *xrealloc ();
140 typedef void Lang_function ();
141 #if FALSE /* many compilers barf on this */
142 Lang_function Asm_labels
;
143 Lang_function default_C_entries
;
144 Lang_function C_entries
;
145 Lang_function Cplusplus_entries
;
146 Lang_function Cstar_entries
;
147 Lang_function Fortran_functions
;
148 Lang_function Yacc_entries
;
149 Lang_function Lisp_functions
;
150 Lang_function Pascal_functions
;
151 Lang_function Prolog_functions
;
152 Lang_function Scheme_functions
;
153 Lang_function TeX_functions
;
154 Lang_function just_read_file
;
155 #else /* so let's write it this way */
157 void default_C_entries ();
159 void Cplusplus_entries ();
160 void Cstar_entries ();
161 void Fortran_functions ();
162 void Yacc_entries ();
163 void Lisp_functions ();
164 void Pascal_functions ();
165 void Prolog_functions ();
166 void Scheme_functions ();
167 void TeX_functions ();
168 void just_read_file ();
171 logical
get_language ();
172 int total_size_of_entries ();
174 long readline_internal ();
180 void fatal (), pfatal ();
181 void find_entries ();
187 void process_file ();
192 char searchar
= '/'; /* use /.../ searches */
194 int lineno
; /* line number of current line */
195 long charno
; /* current character number */
197 long linecharno
; /* charno of start of line; not used by C,
198 but by every other language. */
200 char *curfile
; /* current input file name */
201 char *tagfile
; /* output file */
202 char *progname
; /* name this program was invoked with */
203 char *cwd
; /* current working directory */
204 char *tagfiledir
; /* directory of tagfile */
206 FILE *tagf
; /* ioptr for tags file */
207 NODE
*head
; /* the head of the binary tree of tags */
210 * A `struct linebuffer' is a structure which holds a line of text.
211 * `readline' reads a line from a stream into a linebuffer and works
212 * regardless of the length of the line.
220 struct linebuffer lb
; /* the current line */
224 struct linebuffer lb
; /* used by C_entries instead of lb */
227 /* boolean "functions" (see init) */
228 logical _wht
[0177], _etk
[0177], _itk
[0177], _btk
[0177];
230 *white
= " \f\t\n\013", /* white chars */
231 *endtk
= " \t\n\013\"'#()[]{}=-+%*/&|^~!<>;,.:?", /* token ending chars */
232 /* token starting chars */
233 *begtk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~",
234 /* valid in-token chars */
235 *intk
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789";
237 logical append_to_tagfile
; /* -a: append to tags */
238 /* The following three default to TRUE for etags, but to FALSE for ctags. */
239 logical typedefs
; /* -t: create tags for typedefs */
240 logical typedefs_and_cplusplus
; /* -T: create tags for typedefs, level */
241 /* 0 struct/enum/union decls, and C++ */
242 /* member functions. */
243 logical constantypedefs
; /* -d: create tags for C #define and enum */
244 /* constants. Enum consts not implemented. */
245 /* -D: opposite of -d. Default under ctags. */
246 logical update
; /* -u: update tags */
247 logical vgrind_style
; /* -v: create vgrind style index output */
248 logical no_warnings
; /* -w: suppress warnings */
249 logical cxref_style
; /* -x: create cxref style output */
250 logical cplusplus
; /* .[hc] means C++, not C */
251 logical noindentypedefs
; /* -S: ignore indentation in C */
252 #define permit_duplicates TRUE /* allow duplicate tags */
254 struct option longopts
[] =
256 { "append", no_argument
, NULL
, 'a' },
257 { "backward-search", no_argument
, NULL
, 'B' },
258 { "c++", no_argument
, NULL
, 'C' },
259 { "cxref", no_argument
, NULL
, 'x' },
260 { "defines", no_argument
, NULL
, 'd' },
261 { "help", no_argument
, NULL
, 'h' },
262 { "help", no_argument
, NULL
, 'H' },
263 { "ignore-indentation", no_argument
, NULL
, 'S' },
264 { "include", required_argument
, NULL
, 'i' },
265 { "language", required_argument
, NULL
, 'l' },
266 { "no-defines", no_argument
, NULL
, 'D' },
267 { "no-regex", no_argument
, NULL
, 'R' },
268 { "no-warn", no_argument
, NULL
, 'w' },
269 { "output", required_argument
, NULL
, 'o' },
270 { "regex", required_argument
, NULL
, 'r' },
271 { "typedefs", no_argument
, NULL
, 't' },
272 { "typedefs-and-c++", no_argument
, NULL
, 'T' },
273 { "update", no_argument
, NULL
, 'u' },
274 { "version", no_argument
, NULL
, 'V' },
275 { "vgrind", no_argument
, NULL
, 'v' },
280 /* Structure defining a regular expression. Elements are
281 the compiled pattern, and the name string. */
284 struct re_pattern_buffer
*pattern
;
285 struct re_registers regs
;
287 logical error_signaled
;
290 /* Number of regexps found. */
291 int num_patterns
= 0;
293 /* Array of all regexps. */
294 struct pattern
*patterns
= NULL
;
295 #endif /* ETAGS_REGEXPS */
297 /* Language stuff. */
301 Lang_function
*function
;
304 /* Table of language names and corresponding functions. */
305 /* It is ok for a given function to be listed under more than one
306 name. I just didn't. */
307 /* "auto" language reverts to default behavior. */
308 struct lang_entry lang_names
[] =
310 { "asm", Asm_labels
},
311 { "c", default_C_entries
},
312 { "c++", Cplusplus_entries
},
313 { "c*", Cstar_entries
},
314 { "fortran", Fortran_functions
},
315 { "lisp", Lisp_functions
},
316 { "none", just_read_file
},
317 { "pascal", Pascal_functions
},
318 { "scheme" , Scheme_functions
},
319 { "tex", TeX_functions
},
324 /* Table of file extensions and corresponding language functions. */
325 struct lang_entry lang_extensions
[] =
327 /* Assume that ".s" or ".a" is assembly code. -wolfgang.
329 { "a", Asm_labels
}, /* Unix assembler */
330 { "asm", Asm_labels
}, /* Microcontroller assembly */
331 { "def", Asm_labels
}, /* BSO/Tasking definition includes */
332 { "inc", Asm_labels
}, /* Microcontroller include files */
333 { "ins", Asm_labels
}, /* Microcontroller include files */
335 { "sa", Asm_labels
}, /* Unix assembler */
336 { "src", Asm_labels
}, /* BSO/Tasking C compiler output */
338 /* .aux, .bbl, .clo, .cls, .dtx or .tex implies LaTeX source code. */
339 { "aux", TeX_functions
},
340 { "bbl", TeX_functions
},
341 { "clo", TeX_functions
},
342 { "cls", TeX_functions
},
343 { "dtx", TeX_functions
},
344 { "sty", TeX_functions
},
345 { "tex", TeX_functions
},
347 /* .l or .el or .lisp (or .cl or .clisp or ...) implies lisp source code */
348 { "cl", Lisp_functions
},
349 { "clisp", Lisp_functions
},
350 { "el", Lisp_functions
},
351 { "l", Lisp_functions
},
352 { "lisp", Lisp_functions
},
353 { "lsp", Lisp_functions
},
355 /* .scm or .sm or .scheme implies scheme source code */
356 { "SCM", Scheme_functions
},
357 { "SM", Scheme_functions
},
358 { "oak", Scheme_functions
},
359 { "sch", Scheme_functions
},
360 { "scheme", Scheme_functions
},
361 { "scm", Scheme_functions
},
362 { "sm", Scheme_functions
},
363 { "t", Scheme_functions
},
364 /* FIXME Can't do the `SCM' or `scm' prefix with a version number */
366 /* Note that ".c" and ".h" can be considered C++, if the --c++
367 flag was given. That is why default_C_entries is called here. */
368 { "c", default_C_entries
},
369 { "h", default_C_entries
},
371 /* .C or .H or .cpp or .cxx or .hxx or .hh or .cc or .cpp: a C++ file */
372 { "C", Cplusplus_entries
},
373 { "H", Cplusplus_entries
},
374 { "cc", Cplusplus_entries
},
375 { "cpp", Cplusplus_entries
},
376 { "cxx", Cplusplus_entries
},
377 { "hh", Cplusplus_entries
},
378 { "hxx", Cplusplus_entries
},
380 /* .y: a yacc file */
381 { "y", Yacc_entries
},
383 /* .cs or .hs: a C* file */
384 { "cs", Cstar_entries
},
385 { "hs", Cstar_entries
},
387 /* .f and .for are FORTRAN. */
388 { "F", Fortran_functions
},
389 { "f", Fortran_functions
},
390 { "for", Fortran_functions
},
392 /* .pl implies prolog source code */
393 { "pl", Prolog_functions
},
395 /* .p or .pas: a Pascal file */
396 { "p", Pascal_functions
},
397 { "pas", Pascal_functions
},
402 /* Non-NULL if language fixed. */
403 Lang_function
*lang_func
= NULL
;
407 print_language_names ()
409 struct lang_entry
*name
, *ext
;
411 puts ("\nThese are the currently supported languages, along with the\n\
412 default extensions for files:");
413 for (name
= lang_names
; name
->extension
; ++name
)
415 printf ("\t%s\t", name
->extension
);
416 for (ext
= lang_extensions
; ext
->extension
; ++ext
)
417 if (name
->function
== ext
->function
)
418 printf (" .%s", ext
->extension
);
421 puts ("Where `auto' means use default language for files based on filename\n\
422 extension, and `none' means only do regexp processing on files.\n\
423 If no language is specified and no extension is found for some file,\n\
424 Fortran is tried first; if no tags are found, C is tried next.");
431 printf ("%s for Emacs version %s.\n", (CTAGS
) ? "CTAGS" : "ETAGS", VERSION
);
433 printf ("%s for Emacs version 19.\n", (CTAGS
) ? "CTAGS" : "ETAGS");
442 printf ("These are the options accepted by %s. You may use unambiguous\n\
443 abbreviations for the long option names. A - as file name means read\n\
444 names from stdin.\n\n", progname
);
446 puts ("-a, --append\n\
447 Append tag entries to existing tags file.");
450 puts ("-B, --backward-search\n\
451 Write the search commands for the tag entries using '?', the\n\
452 backward-search command instead of '/', the forward-search command.");
455 Treat files whose extension defaults to C language as C++ files.");
458 puts ("-d, --defines\n\
459 Create tag entries for constant C #defines, too.");
461 puts ("-D, --no-defines\n\
462 Don't create tag entries for constant C #defines. This makes\n\
463 the tags file smaller.");
467 puts ("-i FILE, --include=FILE\n\
468 Include a note in tag file indicating that, when searching for\n\
469 a tag, one should also consult the tags file FILE after\n\
470 checking the current file.");
471 puts ("-l LANG, --language=LANG\n\
472 Force the following files to be considered as written in the\n\
473 named language up to the next --language=LANG option.");
477 puts ("-r /REGEXP/, --regex=/REGEXP/\n\
478 Make a tag for each line matching pattern REGEXP in the\n\
479 following files. REGEXP is anchored (as if preceded by ^).\n\
480 The form /REGEXP/NAME/ creates a named tag. For example Tcl\n\
481 named tags can be created with:\n\
482 --regex=/proc[ \\t]+\\([^ \\t]+\\)/\\1/.");
483 puts ("-R, --no-regex\n\
484 Don't create tags from regexps for the following files.");
485 #endif /* ETAGS_REGEXPS */
486 puts ("-o FILE, --output=FILE\n\
487 Write the tags to FILE.");
488 puts ("-S, --ignore-indentation\n\
489 Don't rely on indentation quite as much as normal. Currently,\n\
490 this means not to assume that a closing brace in the first\n\
491 column is the final brace of a function or structure\n\
492 definition in C and C++.");
496 puts ("-t, --typedefs\n\
497 Generate tag entries for C typedefs.");
498 puts ("-T, --typedefs-and-c++\n\
499 Generate tag entries for C typedefs, C struct/enum/union tags,\n\
500 and C++ member functions.");
501 puts ("-u, --update\n\
502 Update the tag entries for the given files, leaving tag\n\
503 entries for other files in place. Currently, this is\n\
504 implemented by deleting the existing entries for the given\n\
505 files and then rewriting the new entries at the end of the\n\
506 tags file. It is often faster to simply rebuild the entire\n\
507 tag file than to use this.");
508 puts ("-v, --vgrind\n\
509 Generates an index of items intended for human consumption,\n\
510 similar to the output of vgrind. The index is sorted, and\n\
511 gives the page number of each item.");
512 puts ("-w, --no-warn\n\
513 Suppress warning messages about entries defined in multiple\n\
515 puts ("-x, --cxref\n\
516 Like --vgrind, but in the style of cxref, rather than vgrind.\n\
517 The output uses line numbers instead of page numbers, but\n\
518 beyond that the differences are cosmetic; try both to see\n\
522 puts ("-V, --version\n\
523 Print the version of the program.\n\
525 Print this help message.");
527 print_language_names ();
540 /* This structure helps us allow mixing of --lang and filenames. */
543 enum argument_type arg_type
;
545 Lang_function
*function
;
548 #ifdef VMS /* VMS specific functions */
552 /* This is a BUG! ANY arbitrary limit is a BUG!
553 Won't someone please fix this? */
554 #define MAX_FILE_SPEC_LEN 255
557 char body
[MAX_FILE_SPEC_LEN
+ 1];
561 v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names
562 returning in each successive call the next filename matching the input
563 spec. The function expects that each in_spec passed
564 to it will be processed to completion; in particular, up to and
565 including the call following that in which the last matching name
566 is returned, the function ignores the value of in_spec, and will
567 only start processing a new spec with the following call.
568 If an error occurs, on return out_spec contains the value
569 of in_spec when the error occurred.
571 With each successive filename returned in out_spec, the
572 function's return value is one. When there are no more matching
573 names the function returns zero. If on the first call no file
574 matches in_spec, or there is any other error, -1 is returned.
579 #define OUTSIZE MAX_FILE_SPEC_LEN
585 static long context
= 0;
586 static struct dsc$descriptor_s o
;
587 static struct dsc$descriptor_s i
;
588 static logical pass1
= TRUE
;
595 o
.dsc$a_pointer
= (char *) out
;
596 o
.dsc$w_length
= (short)OUTSIZE
;
597 i
.dsc$a_pointer
= in
;
598 i
.dsc$w_length
= (short)strlen(in
);
599 i
.dsc$b_dtype
= DSC$K_DTYPE_T
;
600 i
.dsc$b_class
= DSC$K_CLASS_S
;
601 o
.dsc$b_dtype
= DSC$K_DTYPE_VT
;
602 o
.dsc$b_class
= DSC$K_CLASS_VS
;
604 if ((status
= lib$
find_file(&i
, &o
, &context
, 0, 0)) == RMS$_NORMAL
)
606 out
->body
[out
->curlen
] = EOS
;
609 else if (status
== RMS$_NMF
)
613 strcpy(out
->body
, in
);
616 lib$
find_file_end(&context
);
622 v1.01 nmm 19-Aug-85 gfnames - return in successive calls the
623 name of each file specified by the provided arg expanding wildcards.
626 gfnames (arg
, p_error
)
630 static vspec filename
= {MAX_FILE_SPEC_LEN
, "\0"};
632 switch (fn_exp (&filename
, arg
))
636 return filename
.body
;
642 return filename
.body
;
646 #ifndef OLD /* Newer versions of VMS do provide `system'. */
650 fprintf (stderr
, "system() function not implemented under VMS\n");
654 #define VERSION_DELIM ';'
655 char *massage_name (s
)
661 if (*s
== VERSION_DELIM
)
679 unsigned int nincluded_files
= 0;
680 char **included_files
= xnew (argc
, char *);
683 int current_arg
= 0, file_count
= 0;
684 struct linebuffer filename_lb
;
690 _fmode
= O_BINARY
; /* all of files are treated as binary files */
695 /* Allocate enough no matter what happens. Overkill, but each one
697 argbuffer
= xnew (argc
, ARGUMENT
);
700 /* Set syntax for regular expression routines. */
701 re_set_syntax (RE_SYNTAX_EMACS
);
702 #endif /* ETAGS_REGEXPS */
705 * If etags, always find typedefs and structure tags. Why not?
706 * Also default is to find macro constants.
709 typedefs
= typedefs_and_cplusplus
= constantypedefs
= TRUE
;
713 int opt
= getopt_long (argc
, argv
,
714 "-aCdDf:l:o:r:RStTi:BuvxwVhH", longopts
, 0);
722 /* If getopt returns 0, then it has already processed a
723 long-named option. We should do nothing. */
727 /* This means that a filename has been seen. Record it. */
728 argbuffer
[current_arg
].arg_type
= at_filename
;
729 argbuffer
[current_arg
].what
= optarg
;
734 /* Common options. */
736 append_to_tagfile
= TRUE
;
742 constantypedefs
= TRUE
;
745 constantypedefs
= FALSE
;
747 case 'f': /* for compatibility with old makefiles */
752 "%s: -%c flag may only be given once.\n", progname
, opt
);
758 if (!get_language (optarg
, &argbuffer
[current_arg
].function
))
760 fprintf (stderr
, "%s: language \"%s\" not recognized.\n",
764 argbuffer
[current_arg
].arg_type
= at_language
;
769 argbuffer
[current_arg
].arg_type
= at_regexp
;
770 argbuffer
[current_arg
].what
= optarg
;
774 argbuffer
[current_arg
].arg_type
= at_regexp
;
775 argbuffer
[current_arg
].what
= NULL
;
778 #endif /* ETAGS_REGEXPS */
780 noindentypedefs
= TRUE
;
793 typedefs
= typedefs_and_cplusplus
= TRUE
;
798 included_files
[nincluded_files
++] = optarg
;
820 "%s: -%c flag not recognised.\n", progname
, opt
);
825 for (; optind
< argc
; ++optind
)
827 argbuffer
[current_arg
].arg_type
= at_filename
;
828 argbuffer
[current_arg
].what
= argv
[optind
];
833 if (nincluded_files
== 0 && file_count
== 0)
835 fprintf (stderr
, "%s: No input files specified.\n", progname
);
838 fprintf (stderr
, "%s: Try `%s --help' for a complete list of options.\n",
845 tagfile
= CTAGS
? "tags" : "TAGS";
847 cwd
= etags_getcwd (); /* the current working directory */
849 if (streq (tagfile
, "-"))
855 tagfiledir
= absolute_dirname (tagfile
, cwd
);
858 init (); /* set up boolean "functions" */
861 initbuffer (&lbs
[0].lb
);
862 initbuffer (&lbs
[1].lb
);
863 initbuffer (&filename_lb
);
867 if (streq (tagfile
, "-"))
870 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
876 * Loop through files finding functions.
878 for (i
= 0; i
< current_arg
; ++i
)
880 switch (argbuffer
[i
].arg_type
)
883 lang_func
= argbuffer
[i
].function
;
887 add_regex (argbuffer
[i
].what
);
892 while ((this_file
= gfnames (argbuffer
[i
].what
, &got_err
)) != NULL
)
896 error ("Can't find file %s\n", this_file
);
901 this_file
= massage_name (this_file
);
904 this_file
= argbuffer
[i
].what
;
906 /* Input file named "-" means read file names from stdin
908 if (streq (this_file
, "-"))
910 while (!feof (stdin
))
912 (void) readline_internal (&filename_lb
, stdin
);
913 if (strlen (filename_lb
.buffer
) > 0)
914 process_file (filename_lb
.buffer
);
918 process_file (this_file
);
928 while (nincluded_files
-- > 0)
929 fprintf (tagf
, "\f\n%s,include\n", *included_files
++);
935 /* If CTAGS, we are here. process_file did not write the tags yet,
936 because we want them ordered. Let's do it now. */
939 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
949 for (i
= 0; i
< current_arg
; ++i
)
951 if (argbuffer
[i
].arg_type
!= at_filename
)
954 "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
955 tagfile
, argbuffer
[i
].what
, tagfile
);
956 if (system (cmd
) != GOOD
)
957 fatal ("failed to execute shell command");
959 append_to_tagfile
= TRUE
;
962 tagf
= fopen (tagfile
, append_to_tagfile
? "a" : "w");
971 sprintf (cmd
, "sort %s -o %s", tagfile
, tagfile
);
979 * Set the language, given the name.
982 get_language (language
, func
)
984 Lang_function
**func
;
986 struct lang_entry
*lang
;
988 for (lang
= lang_names
; lang
->extension
; ++lang
)
990 if (streq (language
, lang
->extension
))
992 *func
= lang
->function
;
1002 * This routine is called on each file argument.
1008 struct stat stat_buf
;
1011 if (stat (file
, &stat_buf
) == 0 && !S_ISREG (stat_buf
.st_mode
))
1013 fprintf (stderr
, "Skipping %s: it is not a regular file.\n", file
);
1016 if (streq (file
, tagfile
) && !streq (tagfile
, "-"))
1018 fprintf (stderr
, "Skipping inclusion of %s in self.\n", file
);
1021 inf
= fopen (file
, "r");
1028 find_entries (file
, inf
);
1036 /* file is an absolute filename. Canonicalise it. */
1037 filename
= absolute_filename (file
, cwd
);
1041 /* file is a filename relative to cwd. Make it relative
1042 to the directory of the tags file. */
1043 filename
= relative_filename (file
, tagfiledir
);
1045 fprintf (tagf
, "\f\n%s,%d\n", filename
, total_size_of_entries (head
));
1053 * This routine sets up the boolean pseudo-functions which work
1054 * by setting boolean flags dependent upon the corresponding character
1055 * Every char which is NOT in that string is not a white char. Therefore,
1056 * all of the array "_wht" is set to FALSE, and then the elements
1057 * subscripted by the chars in "white" are set to TRUE. Thus "_wht"
1058 * of a char is TRUE if it is the string "white", else FALSE.
1066 for (i
= 0; i
< 0177; i
++)
1067 _wht
[i
] = _etk
[i
] = _itk
[i
] = _btk
[i
] = FALSE
;
1068 for (sp
= white
; *sp
; sp
++)
1070 for (sp
= endtk
; *sp
; sp
++)
1072 for (sp
= intk
; *sp
; sp
++)
1074 for (sp
= begtk
; *sp
; sp
++)
1076 _wht
[0] = _wht
['\n'];
1077 _etk
[0] = _etk
['\n'];
1078 _btk
[0] = _btk
['\n'];
1079 _itk
[0] = _itk
['\n'];
1083 * This routine opens the specified file and calls the function
1084 * which finds the function and type definitions.
1087 find_entries (file
, inf
)
1092 struct lang_entry
*lang
;
1093 NODE
*old_last_node
;
1094 extern NODE
*last_node
;
1096 curfile
= savestr (file
);
1097 cp
= etags_strrchr (file
, '.');
1099 /* If user specified a language, use it. */
1100 if (lang_func
!= NULL
)
1110 for (lang
= lang_extensions
; lang
->extension
; ++lang
)
1112 if (streq (cp
, lang
->extension
))
1114 lang
->function (inf
);
1122 old_last_node
= last_node
;
1123 Fortran_functions (inf
);
1125 /* No Fortran entries found. Try C. */
1126 if (old_last_node
== last_node
)
1127 default_C_entries (inf
);
1132 /* Should take a TOKEN* instead!! */
1134 pfnote (name
, is_func
, named
, linestart
, linelen
, lno
, cno
)
1135 char *name
; /* tag name */
1136 logical is_func
; /* tag is a function */
1137 logical named
; /* tag different from text of definition */
1138 char *linestart
; /* start of the line where tag is */
1139 int linelen
; /* length of the line where tag is */
1140 int lno
; /* line number */
1141 long cno
; /* character number */
1143 register NODE
*np
= xnew (1, NODE
);
1146 /* If ctags mode, change name "main" to M<thisfilename>. */
1147 if (CTAGS
&& !cxref_style
&& streq (name
, "main"))
1149 fp
= etags_strrchr (curfile
, '/');
1150 np
->name
= concat ("M", fp
== 0 ? curfile
: fp
+ 1, "");
1151 fp
= etags_strrchr (np
->name
, '.');
1152 if (fp
&& fp
[1] != '\0' && fp
[2] == '\0')
1162 np
->is_func
= is_func
;
1164 /* Our char numbers are 0-base, because of C language tradition?
1165 ctags compatibility? old versions compatibility? I don't know.
1166 Anyway, since emacs's are 1-base we espect etags.el to take care
1167 of the difference. If we wanted to have 1-based numbers, we would
1168 uncomment the +1 below. */
1169 np
->cno
= cno
/* + 1 */ ;
1170 np
->left
= np
->right
= NULL
;
1171 np
->pat
= savenstr (linestart
, ((CTAGS
&& !cxref_style
) ? 50 : linelen
));
1173 add_node (np
, &head
);
1178 * recurse on left children, iterate on right children.
1182 register NODE
*node
;
1186 register NODE
*node_right
= node
->right
;
1187 free_tree (node
->left
);
1191 free ((char *) node
);
1198 * Adds a node to the tree of nodes. In etags mode, we don't keep
1199 * it sorted; we just keep a linear list. In ctags mode, maintain
1200 * an ordered tree, with no attempt at balancing.
1202 * add_node is the only function allowed to add nodes, so it can
1205 NODE
*last_node
= NULL
;
1207 add_node (node
, cur_node_p
)
1208 NODE
*node
, **cur_node_p
;
1211 register NODE
*cur_node
= *cur_node_p
;
1213 if (cur_node
== NULL
)
1223 if (last_node
== NULL
)
1224 fatal ("internal error in add_node", 0);
1225 last_node
->right
= node
;
1231 dif
= strcmp (node
->name
, cur_node
->name
);
1234 * If this tag name matches an existing one, then
1235 * do not add the node, but maybe print a warning.
1239 if (node
->file
== cur_node
->file
)
1243 fprintf (stderr
, "Duplicate entry in file %s, line %d: %s\n",
1244 node
->file
, lineno
, node
->name
);
1245 fprintf (stderr
, "Second entry ignored\n");
1249 if (!cur_node
->been_warned
&& !no_warnings
)
1252 "Duplicate entry in files %s and %s: %s (Warning only)\n",
1253 node
->file
, cur_node
->file
, node
->name
);
1255 cur_node
->been_warned
= TRUE
;
1259 /* Maybe refuse to add duplicate nodes. */
1260 if (!permit_duplicates
)
1262 if (streq (node
->name
, cur_node
->name
)
1263 && streq (node
->file
, cur_node
->file
))
1267 /* Actually add the node */
1268 add_node (node
, dif
< 0 ? &cur_node
->left
: &cur_node
->right
);
1274 register NODE
*node
;
1281 /* Output subentries that precede this one */
1282 put_entries (node
->left
);
1284 /* Output this entry */
1290 fprintf (tagf
, "%s\177%s\001%d,%d\n",
1291 node
->pat
, node
->name
,
1292 node
->lno
, node
->cno
);
1296 fprintf (tagf
, "%s\177%d,%d\n",
1298 node
->lno
, node
->cno
);
1301 else if (!cxref_style
)
1303 fprintf (tagf
, "%s\t%s\t",
1304 node
->name
, node
->file
);
1308 putc (searchar
, tagf
);
1311 for (sp
= node
->pat
; *sp
; sp
++)
1313 if (*sp
== '\\' || *sp
== searchar
)
1317 putc (searchar
, tagf
);
1320 { /* a typedef; text pattern inadequate */
1321 fprintf (tagf
, "%d", node
->lno
);
1325 else if (vgrind_style
)
1326 fprintf (stdout
, "%s %s %d\n",
1327 node
->name
, node
->file
, (node
->lno
+ 63) / 64);
1329 fprintf (stdout
, "%-16s %3d %-16s %s\n",
1330 node
->name
, node
->lno
, node
->file
, node
->pat
);
1332 /* Output subentries that follow this one */
1333 put_entries (node
->right
);
1336 /* Length of a number's decimal representation. */
1344 for (; num
; num
/= 10)
1350 * Return total number of characters that put_entries will output for
1351 * the nodes in the subtree of the specified node. Works only if
1352 * we are not ctags, but called only in that case. This count
1353 * is irrelevant with the new tags.el, but is still supplied for
1354 * backward compatibility.
1357 total_size_of_entries (node
)
1358 register NODE
*node
;
1366 for (; node
; node
= node
->right
)
1368 /* Count left subentries. */
1369 total
+= total_size_of_entries (node
->left
);
1371 /* Count this entry */
1372 total
+= strlen (node
->pat
) + 1;
1373 total
+= number_len ((long) node
->lno
) + 1 + number_len (node
->cno
) + 1;
1375 total
+= 1 + strlen (node
->name
); /* \001name */
1382 * The C symbol tables.
1386 st_none
, st_C_struct
, st_C_enum
, st_C_define
, st_C_typedef
, st_C_typespec
1389 /* Feed stuff between (but not including) %[ and %] lines to:
1390 gperf -c -k1,3 -o -p -r -t
1392 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }
1394 class, C_PLPL, st_C_struct
1395 domain, C_STAR, st_C_struct
1396 union, 0, st_C_struct
1397 struct, 0, st_C_struct
1399 typedef, 0, st_C_typedef
1400 define, 0, st_C_define
1401 long, 0, st_C_typespec
1402 short, 0, st_C_typespec
1403 int, 0, st_C_typespec
1404 char, 0, st_C_typespec
1405 float, 0, st_C_typespec
1406 double, 0, st_C_typespec
1407 signed, 0, st_C_typespec
1408 unsigned, 0, st_C_typespec
1409 auto, 0, st_C_typespec
1410 void, 0, st_C_typespec
1411 extern, 0, st_C_typespec
1412 static, 0, st_C_typespec
1413 const, 0, st_C_typespec
1414 volatile, 0, st_C_typespec
1416 and replace lines between %< and %> with its output. */
1418 /* C code produced by gperf version 1.8.1 (K&R C version) */
1419 /* Command-line: gperf -c -k1,3 -o -p -r -t */
1422 struct C_stab_entry
{ char *name
; int c_ext
; enum sym_type type
; };
1424 #define MIN_WORD_LENGTH 3
1425 #define MAX_WORD_LENGTH 8
1426 #define MIN_HASH_VALUE 10
1427 #define MAX_HASH_VALUE 62
1430 53 is the maximum key range
1438 static unsigned char hash_table
[] =
1440 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1441 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1442 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1443 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1444 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1445 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1446 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1447 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1448 62, 62, 62, 62, 62, 62, 62, 62, 62, 62,
1449 62, 62, 62, 62, 62, 62, 62, 2, 62, 7,
1450 6, 9, 15, 30, 62, 24, 62, 62, 1, 24,
1451 7, 27, 13, 62, 19, 26, 18, 27, 1, 62,
1452 62, 62, 62, 62, 62, 62, 62, 62,
1454 return len
+ hash_table
[str
[2]] + hash_table
[str
[0]];
1457 struct C_stab_entry
*
1458 in_word_set (str
, len
)
1463 static struct C_stab_entry wordlist
[] =
1465 {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",},
1467 {"volatile", 0, st_C_typespec
},
1469 {"long", 0, st_C_typespec
},
1470 {"char", 0, st_C_typespec
},
1471 {"class", C_PLPL
, st_C_struct
},
1472 {"",}, {"",}, {"",}, {"",},
1473 {"const", 0, st_C_typespec
},
1474 {"",}, {"",}, {"",}, {"",},
1475 {"auto", 0, st_C_typespec
},
1477 {"define", 0, st_C_define
},
1479 {"void", 0, st_C_typespec
},
1480 {"",}, {"",}, {"",},
1481 {"extern", 0, st_C_typespec
},
1482 {"static", 0, st_C_typespec
},
1484 {"domain", C_STAR
, st_C_struct
},
1486 {"typedef", 0, st_C_typedef
},
1487 {"double", 0, st_C_typespec
},
1488 {"enum", 0, st_C_enum
},
1489 {"",}, {"",}, {"",}, {"",},
1490 {"int", 0, st_C_typespec
},
1492 {"float", 0, st_C_typespec
},
1493 {"",}, {"",}, {"",},
1494 {"struct", 0, st_C_struct
},
1495 {"",}, {"",}, {"",}, {"",},
1496 {"union", 0, st_C_struct
},
1498 {"short", 0, st_C_typespec
},
1500 {"unsigned", 0, st_C_typespec
},
1501 {"signed", 0, st_C_typespec
},
1504 if (len
<= MAX_WORD_LENGTH
&& len
>= MIN_WORD_LENGTH
)
1506 register int key
= hash (str
, len
);
1508 if (key
<= MAX_HASH_VALUE
&& key
>= MIN_HASH_VALUE
)
1510 register char *s
= wordlist
[key
].name
;
1512 if (*s
== *str
&& strneq (str
+ 1, s
+ 1, len
- 1))
1513 return &wordlist
[key
];
1521 C_symtype(str
, len
, c_ext
)
1526 register struct C_stab_entry
*se
= in_word_set(str
, len
);
1528 if (se
== NULL
|| (se
->c_ext
&& !(c_ext
& se
->c_ext
)))
1534 * C functions are recognized using a simple finite automaton.
1535 * funcdef is its state variable.
1539 fnone
, /* nothing seen */
1540 ftagseen
, /* function-like tag seen */
1541 fstartlist
, /* just after open parenthesis */
1542 finlist
, /* in parameter list */
1543 flistseen
, /* after parameter list */
1544 fignore
/* before open brace */
1550 * typedefs are recognized using a simple finite automaton.
1551 * typeddef is its state variable.
1555 tnone
, /* nothing seen */
1556 ttypedseen
, /* typedef keyword seen */
1557 tinbody
, /* inside typedef body */
1558 tend
, /* just before typedef tag */
1559 tignore
/* junk after typedef tag */
1565 * struct-like structures (enum, struct and union) are recognized
1566 * using another simple finite automaton. `structdef' is its state
1571 snone
, /* nothing seen yet */
1572 skeyseen
, /* struct-like keyword seen */
1573 stagseen
, /* struct-like tag seen */
1574 scolonseen
, /* colon seen after struct-like tag */
1575 sinbody
/* in struct body: recognize member func defs*/
1580 * When structdef is stagseen, scolonseen, or sinbody, structtag is the
1581 * struct tag, and structtype is the type of the preceding struct-like
1584 char *structtag
= "<uninited>";
1585 enum sym_type structtype
;
1588 * Yet another little state machine to deal with preprocessor lines.
1592 dnone
, /* nothing seen */
1593 dsharpseen
, /* '#' seen as first char on line */
1594 ddefineseen
, /* '#' and 'define' seen */
1595 dignorerest
/* ignore rest of line */
1600 * Set this to TRUE, and the next token considered is called a function.
1601 * Used only for GNU emacs's function-defining macros.
1603 logical next_token_is_func
;
1606 * TRUE in the rules part of a yacc file, FALSE outside (parse as C).
1612 * checks to see if the current token is at the start of a
1613 * function, or corresponds to a typedef, or is a struct/union/enum
1616 * *IS_FUNC gets TRUE iff the token is a function or macro with args.
1617 * C_EXT is which language we are looking at.
1619 * In the future we will need some way to adjust where the end of
1620 * the token is; for instance, implementing the C++ keyword
1621 * `operator' properly will adjust the end of the token to be after
1622 * whatever follows `operator'.
1629 * next_token_is_func IN OUT
1633 consider_token (str
, len
, c
, c_ext
, cblev
, is_func
)
1634 register char *str
; /* IN: token pointer */
1635 register int len
; /* IN: token length */
1636 register char c
; /* IN: first char after the token */
1637 int c_ext
; /* IN: C extensions mask */
1638 int cblev
; /* IN: curly brace level */
1639 logical
*is_func
; /* OUT: function found */
1641 enum sym_type toktype
= C_symtype (str
, len
, c_ext
);
1644 * Advance the definedef state machine.
1649 /* We're not on a preprocessor line. */
1652 if (toktype
== st_C_define
)
1654 definedef
= ddefineseen
;
1658 definedef
= dignorerest
;
1663 * Make a tag for any macro, unless it is a constant
1664 * and constantypedefs is FALSE.
1666 definedef
= dignorerest
;
1667 *is_func
= (c
== '(');
1668 if (!*is_func
&& !constantypedefs
)
1675 error ("internal error: definedef value.", 0);
1684 if (toktype
== st_C_typedef
)
1687 typdef
= ttypedseen
;
1703 /* Do not return here, so the structdef stuff has a chance. */
1717 * This structdef business is currently only invoked when cblev==0.
1718 * It should be recursively invoked whatever the curly brace level,
1719 * and a stack of states kept, to allow for definitions of structs
1722 * This structdef business is NOT invoked when we are ctags and the
1723 * file is plain C. This is because a struct tag may have the same
1724 * name as another tag, and this loses with ctags.
1726 * This if statement deals with the typdef state machine as
1727 * follows: if typdef==ttypedseen and token is struct/union/class/enum,
1728 * return FALSE. All the other code here is for the structdef
1735 if (typdef
== ttypedseen
1736 || (typedefs_and_cplusplus
&& cblev
== 0 && structdef
== snone
))
1738 structdef
= skeyseen
;
1739 structtype
= toktype
;
1743 if (structdef
== skeyseen
)
1745 /* Save the tag for struct/union/class, for functions that may be
1747 if (structtype
== st_C_struct
)
1748 structtag
= savenstr (str
, len
);
1750 structtag
= "<enum>";
1751 structdef
= stagseen
;
1755 /* Avoid entering funcdef stuff if typdef is going on. */
1756 if (typdef
!= tnone
)
1762 /* Detect GNU macros. */
1763 if (definedef
== dnone
)
1764 if (strneq (str
, "DEFUN", 5) /* Used in emacs */
1766 These are defined inside C functions
, so currently they
1768 || strneq (str
, "EXFUN", 5) /* Used in glibc */
1769 || strneq (str
, "DEFVAR_", 7) /* Used in emacs */
1771 || strneq (str
, "SYSCALL", 7) /* Used in glibc (mach) */
1772 || strneq (str
, "ENTRY", 5) /* Used in glibc */
1773 || strneq (str
, "PSEUDO", 6)) /* Used in glibc */
1776 next_token_is_func
= TRUE
;
1779 if (next_token_is_func
)
1781 next_token_is_func
= FALSE
;
1791 if (funcdef
!= finlist
&& funcdef
!= fignore
)
1792 funcdef
= fnone
; /* should be useless */
1795 if (funcdef
== fnone
)
1808 * This routine finds functions, typedefs, #define's and
1809 * struct/union/enum definitions in C syntax and adds them
1820 #define current_lb_is_new (newndx == curndx)
1821 #define switch_line_buffers() (curndx = 1 - curndx)
1823 #define curlb (lbs[curndx].lb)
1824 #define othlb (lbs[1-curndx].lb)
1825 #define newlb (lbs[newndx].lb)
1826 #define curlinepos (lbs[curndx].linepos)
1827 #define othlinepos (lbs[1-curndx].linepos)
1828 #define newlinepos (lbs[newndx].linepos)
1830 #define CNL_SAVE_DEFINEDEF \
1832 curlinepos = charno; \
1834 charno += readline (&curlb, inf); \
1835 lp = curlb.buffer; \
1842 CNL_SAVE_DEFINEDEF; \
1846 token_saved = FALSE; \
1848 definedef = dnone; \
1851 #define make_tag_from_new_lb(isfun) pfnote (tok.str, isfun, tok.named, \
1852 newlb.buffer, tok.linelen, tok.lineno, newlinepos)
1853 #define make_tag_from_oth_lb(isfun) pfnote (tok.str, isfun, tok.named, \
1854 othlb.buffer, tok.linelen, tok.lineno, othlinepos)
1857 C_entries (c_ext
, inf
)
1858 int c_ext
; /* extension of C */
1859 FILE *inf
; /* input file */
1861 register char c
; /* latest char read; '\0' for end of line */
1862 register char *lp
; /* pointer one beyond the character `c' */
1863 int curndx
, newndx
; /* indices for current and new lb */
1864 TOKEN tok
; /* latest token read */
1865 register int tokoff
; /* offset in line of start of current token */
1866 register int toklen
; /* length of current token */
1867 int cblev
; /* current curly brace level */
1868 int parlev
; /* current parenthesis level */
1869 logical incomm
, inquote
, inchar
, quotednl
, midtoken
;
1871 logical token_saved
; /* token saved */
1872 TOKEN savetok
; /* token saved during preprocessor handling */
1874 curndx
= newndx
= 0;
1880 definedef
= dnone
; funcdef
= fnone
; typdef
= tnone
; structdef
= snone
;
1881 next_token_is_func
= yacc_rules
= token_saved
= FALSE
;
1882 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
1885 cplpl
= c_ext
& C_PLPL
;
1892 /* If we're at the end of the line, the next character is a
1893 '\0'; don't skip it, because it's the thing that tells us
1894 to read the next line. */
1915 /* Newlines inside comments do not end macro definitions in
1930 /* Newlines inside strings do not end macro definitions
1931 in traditional cpp, even though compilers don't
1932 usually accept them. */
1943 /* Hmmm, something went wrong. */
1957 if (funcdef
!= finlist
&& funcdef
!= fignore
)
1962 if (funcdef
!= finlist
&& funcdef
!= fignore
)
1972 else if (cplpl
&& *lp
== '/')
1980 if ((c_ext
& YACC
) && *lp
== '%')
1982 /* entering or exiting rules section in yacc file */
1984 definedef
= dnone
; funcdef
= fnone
;
1985 typdef
= tnone
; structdef
= snone
;
1986 next_token_is_func
= FALSE
;
1987 midtoken
= inquote
= inchar
= incomm
= quotednl
= FALSE
;
1989 yacc_rules
= !yacc_rules
;
1995 if (definedef
== dnone
)
1998 logical cpptoken
= TRUE
;
2000 /* Look back on this line. If all blanks, or nonblanks
2001 followed by an end of comment, this is a preprocessor
2003 for (cp
= newlb
.buffer
; cp
< lp
-1; cp
++)
2006 if (*cp
== '*' && *(cp
+1) == '/')
2015 definedef
= dsharpseen
;
2016 } /* if (definedef == dnone) */
2022 /* Consider token only if some complicated conditions are satisfied. */
2023 if ((definedef
!= dnone
2024 || (cblev
== 0 && structdef
!= scolonseen
)
2025 || (cblev
== 1 && cplpl
&& structdef
== sinbody
))
2026 && typdef
!= tignore
2027 && definedef
!= dignorerest
2028 && funcdef
!= finlist
)
2034 if (cplpl
&& c
== ':' && *lp
== ':' && begtoken(*(lp
+ 1)))
2037 * This handles :: in the middle, but not at the
2038 * beginning of an identifier.
2045 logical is_func
= FALSE
;
2048 || consider_token (newlb
.buffer
+ tokoff
, toklen
,
2049 c
, c_ext
, cblev
, &is_func
))
2051 if (structdef
== sinbody
2052 && definedef
== dnone
2054 /* function defined in C++ class body */
2056 char *cp
= newlb
.buffer
+ tokoff
+ toklen
;
2059 tok
.str
= concat (structtag
, "::",
2060 newlb
.buffer
+ tokoff
);
2066 tok
.str
= savenstr (newlb
.buffer
+tokoff
, toklen
);
2067 if (structdef
== stagseen
2070 && definedef
== dignorerest
)) /* macro */
2075 tok
.lineno
= lineno
;
2076 tok
.linelen
= tokoff
+ toklen
+ 1;
2078 if (definedef
== dnone
2079 && (funcdef
== ftagseen
2080 || structdef
== stagseen
2083 if (current_lb_is_new
)
2084 switch_line_buffers ();
2087 make_tag_from_new_lb (is_func
);
2091 } /* if (endtoken (c)) */
2092 else if (intoken (c
))
2097 } /* if (midtoken) */
2098 else if (begtoken (c
))
2109 make_tag_from_oth_lb (TRUE
);
2116 if (structdef
== stagseen
)
2120 /* Take a quick peek ahead for a define directive,
2121 so we can avoid saving the token when not absolutely
2122 necessary. [This is a speed hack.] */
2123 if (c
== 'd' && strneq (lp
, "efine", 5)
2124 && iswhite (*(lp
+ 5)))
2128 definedef
= ddefineseen
;
2132 definedef
= dignorerest
;
2135 if (!yacc_rules
|| lp
== newlb
.buffer
+ 1)
2137 tokoff
= lp
- 1 - newlb
.buffer
;
2143 } /* if must look at token */
2146 /* Detect end of line, colon, comma, semicolon and various braces
2147 after having handled a token.*/
2151 if (definedef
!= dnone
)
2153 if (structdef
== stagseen
)
2154 structdef
= scolonseen
;
2161 make_tag_from_oth_lb (FALSE
);
2171 if (definedef
!= dnone
)
2177 make_tag_from_oth_lb (FALSE
);
2182 if (funcdef
!= fignore
)
2184 if (structdef
== stagseen
)
2188 if (definedef
!= dnone
)
2190 if (funcdef
!= finlist
&& funcdef
!= fignore
)
2192 if (structdef
== stagseen
)
2196 if (definedef
!= dnone
)
2198 if (cblev
== 0 && typdef
== tend
)
2201 make_tag_from_oth_lb (FALSE
);
2204 if (funcdef
!= finlist
&& funcdef
!= fignore
)
2206 if (structdef
== stagseen
)
2210 if (definedef
!= dnone
)
2219 /* Make sure that the next char is not a '*'.
2220 This handles constructs like:
2221 typedef void OperatorFun (int fun); */
2225 make_tag_from_oth_lb (FALSE
);
2228 } /* switch (typdef) */
2231 funcdef
= fstartlist
;
2240 if (definedef
!= dnone
)
2248 funcdef
= flistseen
;
2251 if (cblev
== 0 && typdef
== tend
)
2254 make_tag_from_oth_lb (FALSE
);
2257 else if (parlev
< 0) /* can happen due to ill-conceived #if's. */
2261 if (definedef
!= dnone
)
2263 if (typdef
== ttypedseen
)
2267 case skeyseen
: /* unnamed struct */
2268 structtag
= "_anonymous_";
2269 structdef
= sinbody
;
2272 case scolonseen
: /* named struct */
2273 structdef
= sinbody
;
2274 make_tag_from_oth_lb (FALSE
);
2280 make_tag_from_oth_lb (TRUE
);
2286 /* Neutralize `extern "C" {' grot and look inside structs. */
2287 if (cblev
== 0 && structdef
== snone
&& typdef
== tnone
)
2293 if (definedef
!= dnone
)
2295 if (funcdef
== fstartlist
)
2296 funcdef
= fnone
; /* avoid tagging `foo' in `foo (*bar()) ()' */
2299 if (definedef
!= dnone
)
2301 if (!noindentypedefs
&& lp
== newlb
.buffer
+ 1)
2303 cblev
= 0; /* reset curly brace level if first column */
2304 parlev
= 0; /* also reset paren level, just in case... */
2310 if (typdef
== tinbody
)
2312 #if FALSE /* too risky */
2313 if (structdef
== sinbody
)
2317 structtag
= "<error>";
2321 case '#': case '+': case '-': case '~': case '&': case '%': case '/':
2322 case '|': case '^': case '!': case '<': case '>': case '.': case '?':
2323 if (definedef
!= dnone
)
2325 /* These surely cannot follow a function tag. */
2326 if (funcdef
!= finlist
&& funcdef
!= fignore
)
2330 /* If a macro spans multiple lines don't reset its state. */
2338 } /* while not eof */
2342 * Process either a C++ file or a C file depending on the setting
2346 default_C_entries (inf
)
2349 C_entries (cplusplus
? C_PLPL
: 0, inf
);
2352 /* Always do C++. */
2354 Cplusplus_entries (inf
)
2357 C_entries (C_PLPL
, inf
);
2365 C_entries (C_STAR
, inf
);
2368 /* Always do Yacc. */
2373 C_entries (YACC
, inf
);
2376 /* Fortran parsing */
2384 register int len
= 0;
2386 while (*cp
&& (*cp
| ' ') == (dbp
[len
] | ' '))
2399 while (isspace (*dbp
))
2404 while (isspace (*dbp
))
2408 if (!isdigit (*dbp
))
2410 --dbp
; /* force failure */
2415 while (isdigit (*dbp
));
2424 while (isspace (*dbp
))
2429 linecharno
= charno
;
2430 charno
+= readline (&lb
, inf
);
2435 while (isspace (*dbp
))
2444 && (isalpha (*cp
) || isdigit (*cp
) || (*cp
== '_') || (*cp
== '$')));
2447 pfnote (savenstr (dbp
, cp
-dbp
), TRUE
, FALSE
, lb
.buffer
,
2448 cp
- lb
.buffer
+ 1, lineno
, linecharno
);
2452 Fortran_functions (inf
)
2461 linecharno
= charno
;
2462 charno
+= readline (&lb
, inf
);
2465 dbp
++; /* Ratfor escape to fortran */
2466 while (isspace (*dbp
))
2473 if (tail ("integer"))
2481 if (tail ("logical"))
2485 if (tail ("complex") || tail ("character"))
2489 if (tail ("double"))
2491 while (isspace (*dbp
))
2495 if (tail ("precision"))
2501 while (isspace (*dbp
))
2508 if (tail ("function"))
2512 if (tail ("subroutine"))
2520 if (tail ("program"))
2525 if (tail ("procedure"))
2533 * Bob Weiner, Motorola Inc., 4/3/94
2534 * Unix and microcontroller assembly tag handling
2535 * look for '^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]'
2549 linecharno
= charno
;
2550 charno
+= readline (&lb
, inf
);
2553 /* If first char is alphabetic or one of [_.$], test for colon
2554 following identifier. */
2555 if (isalpha (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
2557 /* Read past label. */
2559 while (isalnum (*cp
) || *cp
== '_' || *cp
== '.' || *cp
== '$')
2561 if (*cp
== ':' || isspace (*cp
))
2563 /* Found end of label, so copy it and add it to the table. */
2564 pfnote (savenstr (lb
.buffer
, cp
-lb
.buffer
), TRUE
, FALSE
,
2565 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
2571 /* Added by Mosur Mohan, 4/22/88 */
2572 /* Pascal parsing */
2574 #define GET_NEW_LINE \
2576 linecharno = charno; lineno++; \
2577 charno += 1 + readline (&lb, inf); \
2582 * Locates tags for procedures & functions. Doesn't do any type- or
2583 * var-definitions. It does look for the keyword "extern" or
2584 * "forward" immediately following the procedure statement; if found,
2585 * the tag is skipped.
2588 Pascal_functions (inf
)
2591 struct linebuffer tline
; /* mostly copied from C_entries */
2597 logical
/* each of these flags is TRUE iff: */
2598 incomment
, /* point is inside a comment */
2599 inquote
, /* point is inside '..' string */
2600 get_tagname
, /* point is after PROCEDURE/FUNCTION */
2601 /* keyword, so next item = potential tag */
2602 found_tag
, /* point is after a potential tag */
2603 inparms
, /* point is within parameter-list */
2604 verify_tag
; /* point has passed the parm-list, so the */
2605 /* next token will determine whether */
2606 /* this is a FORWARD/EXTERN to be */
2607 /* ignored, or whether it is a real tag */
2613 initbuffer (&tline
);
2615 incomment
= inquote
= FALSE
;
2616 found_tag
= FALSE
; /* have a proc name; check if extern */
2617 get_tagname
= FALSE
; /* have found "procedure" keyword */
2618 inparms
= FALSE
; /* found '(' after "proc" */
2619 verify_tag
= FALSE
; /* check if "extern" is ahead */
2621 /* long main loop to get next char */
2625 if (c
== '\0') /* if end of line */
2630 if (!((found_tag
&& verify_tag
) ||
2632 c
= *dbp
++; /* only if don't need *dbp pointing */
2633 /* to the beginning of the name of */
2634 /* the procedure or function */
2638 if (c
== '}') /* within { - } comments */
2640 else if (c
== '*' && dbp
[1] == ')') /* within (* - *) comments */
2657 inquote
= TRUE
; /* found first quote */
2659 case '{': /* found open-{-comment */
2663 if (*dbp
== '*') /* found open-(*-comment */
2668 else if (found_tag
) /* found '(' after tag, i.e., parm-list */
2671 case ')': /* end of parms list */
2676 if ((found_tag
) && (!inparms
)) /* end of proc or fn stmt */
2683 if ((found_tag
) && (verify_tag
) && (*dbp
!= ' '))
2685 /* check if this is an "extern" declaration */
2688 if ((*dbp
== 'e') || (*dbp
== 'E'))
2690 if (tail ("extern")) /* superfluous, really! */
2696 else if ((*dbp
== 'f') || (*dbp
== 'F'))
2698 if (tail ("forward")) /* check for forward reference */
2704 if ((found_tag
) && (verify_tag
)) /* not external proc, so make tag */
2708 pfnote (nambuf
, TRUE
, FALSE
, tline
.buffer
,
2709 cp
- tline
.buffer
+ 1, save_lineno
, save_lcno
);
2713 if (get_tagname
) /* grab name of proc or fn */
2718 /* save all values for later tagging */
2719 tline
.size
= lb
.size
;
2720 strcpy (tline
.buffer
, lb
.buffer
);
2721 save_lineno
= lineno
;
2722 save_lcno
= linecharno
;
2724 /* grab block name */
2725 for (cp
= dbp
+ 1; *cp
&& (!endtoken (*cp
)); cp
++)
2727 nambuf
= savenstr (dbp
, cp
-dbp
);
2728 dbp
= cp
; /* restore dbp to e-o-token */
2729 get_tagname
= FALSE
;
2733 /* and proceed to check for "extern" */
2735 else if (!incomment
&& !inquote
&& !found_tag
)
2737 /* check for proc/fn keywords */
2741 if (tail ("rocedure")) /* c = 'p', dbp has advanced */
2745 if (tail ("unction"))
2750 } /* while not eof */
2754 * lisp tag functions
2755 * look for (def or (DEF, quote or QUOTE
2759 register char *strp
;
2761 return ((strp
[1] == 'd' || strp
[1] == 'D')
2762 && (strp
[2] == 'e' || strp
[2] == 'E')
2763 && (strp
[3] == 'f' || strp
[3] == 'F'));
2768 register char *strp
;
2770 return ((*(++strp
) == 'q' || *strp
== 'Q')
2771 && (*(++strp
) == 'u' || *strp
== 'U')
2772 && (*(++strp
) == 'o' || *strp
== 'O')
2773 && (*(++strp
) == 't' || *strp
== 'T')
2774 && (*(++strp
) == 'e' || *strp
== 'E')
2775 && isspace(*(++strp
)));
2783 if (*dbp
== '\'') /* Skip prefix quote */
2785 else if (*dbp
== '(' && L_isquote (dbp
)) /* Skip "(quote " */
2788 while (isspace(*dbp
))
2791 for (cp
= dbp
/*+1*/;
2792 *cp
&& *cp
!= '(' && *cp
!= ' ' && *cp
!= ')';
2798 pfnote (savenstr (dbp
, cp
-dbp
), TRUE
, FALSE
, lb
.buffer
,
2799 cp
- lb
.buffer
+ 1, lineno
, linecharno
);
2803 Lisp_functions (inf
)
2812 linecharno
= charno
;
2813 charno
+= readline (&lb
, inf
);
2819 while (!isspace (*dbp
))
2821 while (isspace (*dbp
))
2827 /* Check for (foo::defmumble name-defined ... */
2830 while (*dbp
&& !isspace (*dbp
)
2831 && *dbp
!= ':' && *dbp
!= '(' && *dbp
!= ')');
2836 while (*dbp
== ':');
2838 if (L_isdef (dbp
- 1))
2840 while (!isspace (*dbp
))
2842 while (isspace (*dbp
))
2853 * Scheme tag functions
2854 * look for (def... xyzzy
2855 * look for (def... (xyzzy
2856 * look for (def ... ((...(xyzzy ....
2857 * look for (set! xyzzy
2863 Scheme_functions (inf
)
2872 linecharno
= charno
;
2873 charno
+= readline (&lb
, inf
);
2875 if (dbp
[0] == '(' &&
2876 (dbp
[1] == 'D' || dbp
[1] == 'd') &&
2877 (dbp
[2] == 'E' || dbp
[2] == 'e') &&
2878 (dbp
[3] == 'F' || dbp
[3] == 'f'))
2880 while (!isspace (*dbp
))
2882 /* Skip over open parens and white space */
2883 while (*dbp
&& (isspace (*dbp
) || *dbp
== '('))
2887 if (dbp
[0] == '(' &&
2888 (dbp
[1] == 'S' || dbp
[1] == 's') &&
2889 (dbp
[2] == 'E' || dbp
[2] == 'e') &&
2890 (dbp
[3] == 'T' || dbp
[3] == 't') &&
2891 (dbp
[4] == '!' || dbp
[4] == '!') &&
2894 while (!isspace (*dbp
))
2896 /* Skip over white space */
2897 while (isspace (*dbp
))
2911 /* Go till you get to white space or a syntactic break */
2913 *cp
&& *cp
!= '(' && *cp
!= ')' && !isspace (*cp
);
2916 pfnote (savenstr (dbp
, cp
-dbp
), TRUE
, FALSE
,
2917 lb
.buffer
, cp
- lb
.buffer
+ 1, lineno
, linecharno
);
2920 /* Find tags in TeX and LaTeX input files. */
2922 /* TEX_toktab is a table of TeX control sequences that define tags.
2923 Each TEX_tabent records one such control sequence.
2924 CONVERT THIS TO USE THE Stab TYPE!! */
2931 struct TEX_tabent
*TEX_toktab
= NULL
; /* Table with tag tokens */
2933 /* Default set of control sequences to put into TEX_toktab.
2934 The value of environment var TEXTAGS is prepended to this. */
2936 char *TEX_defenv
= "\
2937 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem:typeout";
2940 struct TEX_tabent
*TEX_decode_env ();
2944 char TEX_esc
= '\\';
2945 char TEX_opgrp
= '{';
2946 char TEX_clgrp
= '}';
2949 * TeX/LaTeX scanning loop.
2960 /* Select either \ or ! as escape character. */
2963 /* Initialize token table once from environment. */
2965 TEX_toktab
= TEX_decode_env ("TEXTAGS", TEX_defenv
);
2968 { /* Scan each line in file */
2970 linecharno
= charno
;
2971 charno
+= readline (&lb
, inf
);
2974 while (dbp
= etags_strchr (dbp
, TEX_esc
)) /* Look at each esc in line */
2980 linecharno
+= dbp
- lasthit
;
2982 i
= TEX_Token (lasthit
);
2985 TEX_getit (lasthit
, TEX_toktab
[i
].len
);
2986 break; /* We only save a line once */
2992 #define TEX_LESC '\\'
2993 #define TEX_SESC '!'
2996 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping
2997 chars accordingly. */
3004 while ((c
= getc (inf
)) != EOF
)
3006 /* Skip to next line if we hit the TeX comment char. */
3010 else if (c
== TEX_LESC
|| c
== TEX_SESC
)
3029 /* Read environment and prepend it to the default string.
3030 Build token table. */
3032 TEX_decode_env (evarname
, defenv
)
3036 register char *env
, *p
;
3038 struct TEX_tabent
*tab
;
3041 /* Append default string to environment. */
3042 env
= getenv (evarname
);
3046 env
= concat (env
, defenv
, "");
3048 /* Allocate a token table */
3049 for (size
= 1, p
= env
; p
;)
3050 if ((p
= etags_strchr (p
, ':')) && *(++p
))
3052 /* Add 1 to leave room for null terminator. */
3053 tab
= xnew (size
+ 1, struct TEX_tabent
);
3055 /* Unpack environment string into token table. Be careful about */
3056 /* zero-length strings (leading ':', "::" and trailing ':') */
3059 p
= etags_strchr (env
, ':');
3060 if (!p
) /* End of environment string. */
3061 p
= env
+ strlen (env
);
3063 { /* Only non-zero strings. */
3064 tab
[i
].name
= savenstr (env
, p
- env
);
3065 tab
[i
].len
= strlen (tab
[i
].name
);
3072 tab
[i
].name
= NULL
; /* Mark end of table. */
3080 /* Record a tag defined by a TeX command of length LEN and starting at NAME.
3081 The name being defined actually starts at (NAME + LEN + 1).
3082 But we seem to include the TeX command in the tag name. */
3084 TEX_getit (name
, len
)
3088 char *p
= name
+ len
;
3093 /* Let tag name extend to next group close (or end of line) */
3094 while (*p
&& *p
!= TEX_clgrp
)
3096 pfnote (savenstr (name
, p
-name
), TRUE
, FALSE
, lb
.buffer
,
3097 strlen (lb
.buffer
), lineno
, linecharno
);
3100 /* If the text at CP matches one of the tag-defining TeX command names,
3101 return the pointer to the first occurrence of that command in TEX_toktab.
3102 Otherwise return -1.
3103 Keep the capital `T' in `Token' for dumb truncating compilers
3104 (this distinguishes it from `TEX_toktab' */
3111 for (i
= 0; TEX_toktab
[i
].len
> 0; i
++)
3112 if (strneq (TEX_toktab
[i
].name
, cp
, TEX_toktab
[i
].len
))
3117 /* Support for Prolog. */
3119 /* Whole head (not only functor, but also arguments)
3120 is gotten in compound term. */
3133 if (s
[0] == '\0') /* syntax error. */
3135 else if (insquote
&& s
[0] == '\'' && s
[1] == '\'')
3137 else if (s
[0] == '\'')
3139 insquote
= !insquote
;
3142 else if (!insquote
&& s
[0] == '(')
3147 else if (!insquote
&& s
[0] == ')')
3153 else if (npar
< 0) /* syntax error. */
3156 else if (!insquote
&& s
[0] == '.'
3157 && (isspace (s
[1]) || s
[1] == '\0'))
3159 if (npar
!= 0) /* syntax error. */
3167 pfnote (savenstr (save_s
, s
-save_s
), TRUE
, FALSE
,
3168 save_s
, s
-save_s
, lineno
, linecharno
);
3171 /* It is assumed that prolog predicate starts from column 0. */
3173 Prolog_functions (inf
)
3176 void skip_comment (), prolog_getit ();
3178 lineno
= linecharno
= charno
= 0;
3182 linecharno
+= charno
;
3183 charno
= readline (&lb
, inf
) + 1; /* 1 for newline. */
3185 if (isspace (dbp
[0])) /* not predicate header. */
3187 else if (dbp
[0] == '%') /* comment. */
3189 else if (dbp
[0] == '/' && dbp
[1] == '*') /* comment. */
3190 skip_comment (&lb
, inf
, &lineno
, &linecharno
);
3197 skip_comment (plb
, inf
, plineno
, plinecharno
)
3198 struct linebuffer
*plb
;
3200 int *plineno
; /* result */
3201 long *plinecharno
; /* result */
3207 for (cp
= plb
->buffer
; *cp
!= '\0'; cp
++)
3208 if (cp
[0] == '*' && cp
[1] == '/')
3211 *plinecharno
+= readline (plb
, inf
) + 1; /* 1 for newline. */
3216 #ifdef ETAGS_REGEXPS
3217 /* Take a string like "/blah/" and turn it into "blah", making sure
3218 that the first and last characters are the same, and handling
3219 quoted separator characters. Actually, stops on the occurence of
3220 an unquoted separator. Also turns "\t" into a Tab character.
3221 Returns pointer to terminating separator. Works in place. Null
3222 terminates name string. */
3224 scan_separators (name
)
3228 char *copyto
= name
;
3229 logical quoted
= FALSE
;
3231 for (++name
; *name
!= '\0'; ++name
)
3237 else if (*name
== sep
)
3241 /* Something else is quoted, so preserve the quote. */
3247 else if (*name
== '\\')
3249 else if (*name
== sep
)
3255 /* Terminate copied string. */
3260 /* Turn a name, which is an ed-style (but Emacs syntax) regular
3261 expression, into a real regular expression by compiling it. */
3263 add_regex (regexp_pattern
)
3264 char *regexp_pattern
;
3268 struct re_pattern_buffer
*patbuf
;
3270 if (regexp_pattern
== NULL
)
3272 /* Remove existing regexps. */
3278 if (regexp_pattern
[0] == '\0')
3280 error ("missing regexp", 0);
3283 if (regexp_pattern
[strlen(regexp_pattern
)-1] != regexp_pattern
[0])
3285 error ("%s: unterminated regexp", regexp_pattern
);
3288 name
= scan_separators (regexp_pattern
);
3289 if (regexp_pattern
[0] == '\0')
3291 error ("null regexp", 0);
3294 (void) scan_separators (name
);
3296 patbuf
= xnew (1, struct re_pattern_buffer
);
3297 patbuf
->translate
= NULL
;
3298 patbuf
->fastmap
= NULL
;
3299 patbuf
->buffer
= NULL
;
3300 patbuf
->allocated
= 0;
3302 err
= re_compile_pattern (regexp_pattern
, strlen (regexp_pattern
), patbuf
);
3305 error ("%s while compiling pattern", err
);
3310 if (num_patterns
== 1)
3311 patterns
= xnew (1, struct pattern
);
3313 patterns
= ((struct pattern
*)
3315 (num_patterns
* sizeof (struct pattern
))));
3316 patterns
[num_patterns
- 1].pattern
= patbuf
;
3317 patterns
[num_patterns
- 1].name_pattern
= savestr (name
);
3318 patterns
[num_patterns
- 1].error_signaled
= FALSE
;
3322 * Do the subtitutions indicated by the regular expression and
3326 substitute (in
, out
, regs
)
3328 struct re_registers
*regs
;
3330 char *result
= NULL
, *t
;
3333 /* Pass 1: figure out how much size to allocate. */
3334 for (t
= out
; *t
; ++t
)
3341 fprintf (stderr
, "%s: pattern subtitution ends prematurely\n",
3348 size
+= regs
->end
[dig
] - regs
->start
[dig
];
3353 /* Allocate space and do the substitutions. */
3354 result
= xnew (size
+ 1, char);
3363 /* Using "dig2" satisfies my debugger. Bleah. */
3364 int dig2
= *out
- '0';
3365 strncpy (result
+ size
, in
+ regs
->start
[dig2
],
3366 regs
->end
[dig2
] - regs
->start
[dig2
]);
3367 size
+= regs
->end
[dig2
] - regs
->start
[dig2
];
3374 result
[size
++] = '\t';
3380 result
[size
++] = *out
;
3386 result
[size
++] = *out
;
3388 result
[size
] = '\0';
3393 #endif /* ETAGS_REGEXPS */
3394 /* Initialize a linebuffer for use */
3396 initbuffer (linebuffer
)
3397 struct linebuffer
*linebuffer
;
3399 linebuffer
->size
= 200;
3400 linebuffer
->buffer
= xnew (200, char);
3404 * Read a line of text from `stream' into `linebuffer'.
3405 * Return the number of characters read from `stream',
3406 * which is the length of the line including the newline, if any.
3409 readline_internal (linebuffer
, stream
)
3410 struct linebuffer
*linebuffer
;
3411 register FILE *stream
;
3413 char *buffer
= linebuffer
->buffer
;
3414 register char *p
= linebuffer
->buffer
;
3415 register char *pend
;
3418 pend
= p
+ linebuffer
->size
; /* Separate to avoid 386/IX compiler bug. */
3422 register int c
= getc (stream
);
3425 linebuffer
->size
*= 2;
3426 buffer
= (char *) xrealloc (buffer
, linebuffer
->size
);
3427 p
+= buffer
- linebuffer
->buffer
;
3428 pend
= buffer
+ linebuffer
->size
;
3429 linebuffer
->buffer
= buffer
;
3438 if (p
[-1] == '\r' && p
> buffer
)
3453 return p
- buffer
+ chars_deleted
;
3457 * Like readline_internal, above, but try to match the input
3458 * line against any existing regular expressions.
3461 readline (linebuffer
, stream
)
3462 struct linebuffer
*linebuffer
;
3465 /* Read new line. */
3467 long result
= readline_internal (linebuffer
, stream
);
3469 #ifdef ETAGS_REGEXPS
3470 /* Match against all listed patterns. */
3471 for (i
= 0; i
< num_patterns
; ++i
)
3473 int match
= re_match (patterns
[i
].pattern
, linebuffer
->buffer
,
3474 (int)result
, 0, &patterns
[i
].regs
);
3479 if (!patterns
[i
].error_signaled
)
3481 error ("error while matching pattern %d", i
);
3482 patterns
[i
].error_signaled
= TRUE
;
3489 /* Match occurred. Construct a tag. */
3490 if (patterns
[i
].name_pattern
[0] != '\0')
3492 /* Make a named tag. */
3493 char *name
= substitute (linebuffer
->buffer
,
3494 patterns
[i
].name_pattern
,
3497 pfnote (name
, TRUE
, TRUE
, linebuffer
->buffer
,
3498 match
, lineno
, linecharno
);
3502 /* Make an unnamed tag. */
3503 pfnote (NULL
, TRUE
, FALSE
, linebuffer
->buffer
,
3504 match
, lineno
, linecharno
);
3509 #endif /* ETAGS_REGEXPS */
3515 * Read a file, but do no processing. This is used to do regexp
3516 * matching on files that have no language defined.
3519 just_read_file (inf
)
3525 linecharno
= charno
;
3526 charno
+= readline (&lb
, inf
) + 1;
3532 * Return a pointer to a space of size strlen(cp)+1 allocated
3533 * with xnew where the string CP has been copied.
3539 return savenstr (cp
, strlen (cp
));
3543 * Return a pointer to a space of size LEN+1 allocated with xnew where
3544 * the string CP has been copied for at most the first LEN characters.
3553 dp
= xnew (len
+ 1, char);
3554 strncpy (dp
, cp
, len
);
3560 * Return the ptr in sp at which the character c last
3561 * appears; NULL if not found
3563 * Identical to System V strrchr, included for portability.
3566 etags_strrchr (sp
, c
)
3567 register char *sp
, c
;
3582 * Return the ptr in sp at which the character c first
3583 * appears; NULL if not found
3585 * Identical to System V strchr, included for portability.
3588 etags_strchr (sp
, c
)
3589 register char *sp
, c
;
3599 /* Print error message and exit. */
3616 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
3621 fprintf (stderr
, "%s: ", progname
);
3622 fprintf (stderr
, s1
, s2
);
3623 fprintf (stderr
, "\n");
3626 /* Return a newly-allocated string whose contents
3627 concatenate those of s1, s2, s3. */
3632 int len1
= strlen (s1
), len2
= strlen (s2
), len3
= strlen (s3
);
3633 char *result
= xnew (len1
+ len2
+ len3
+ 1, char);
3635 strcpy (result
, s1
);
3636 strcpy (result
+ len1
, s2
);
3637 strcpy (result
+ len1
+ len2
, s3
);
3638 result
[len1
+ len2
+ len3
] = '\0';
3643 /* Does the same work as the system V getcwd, but does not need to
3644 guess buffer size in advance. */
3649 char *p
, path
[MAXPATHLEN
+ 1]; /* Fixed size is safe on MSDOS. */
3657 *p
++ = tolower (*p
);
3659 return strdup (path
);
3661 #elif HAVE_GETCWD /* not DOS_NT */
3664 char *path
= xnew (bufsize
, char);
3666 while (getcwd (path
, bufsize
) == NULL
)
3668 if (errno
!= ERANGE
)
3671 path
= xnew (bufsize
, char);
3676 #else /* not DOS_NT and not HAVE_GETCWD */
3678 struct linebuffer path
;
3682 pipe
= (FILE *) popen ("pwd 2>/dev/null", "r");
3683 if (pipe
== NULL
|| readline_internal (&path
, pipe
) == 0)
3689 #endif /* not DOS_NT and not HAVE_GETCWD */
3691 /* Return a newly allocated string containing the filename
3692 of FILE relative to the absolute directory DIR (which
3693 should end with a slash). */
3695 relative_filename (file
, dir
)
3698 char *fp
, *dp
, *res
;
3700 /* Find the common root of file and dir. */
3701 fp
= absolute_filename (file
, cwd
);
3703 while (*fp
++ == *dp
++)
3712 /* Build a sequence of "../" strings for the resulting relative filename. */
3713 for (dp
= etags_strchr (dp
+ 1, '/'), res
= "";
3715 dp
= etags_strchr (dp
+ 1, '/'))
3717 res
= concat (res
, "../", "");
3720 /* Add the filename relative to the common root of file and dir. */
3721 res
= concat (res
, fp
+ 1, "");
3723 return res
; /* temporary stub */
3726 /* Return a newly allocated string containing the
3727 absolute filename of FILE given CWD (which should
3728 end with a slash). */
3730 absolute_filename (file
, cwd
)
3733 char *slashp
, *cp
, *res
;
3736 res
= concat (file
, "", "");
3738 res
= concat (cwd
, file
, "");
3740 /* Delete the "/dirname/.." and "/." substrings. */
3741 slashp
= etags_strchr (res
, '/');
3742 while (slashp
!= NULL
&& slashp
[0] != '\0')
3744 if (slashp
[1] == '.')
3746 if (slashp
[2] == '.'
3747 && (slashp
[3] == '/' || slashp
[3] == '\0'))
3752 while (cp
>= res
&& *cp
!= '/');
3755 strcpy (cp
, slashp
+ 3);
3757 else /* else (cp == res) */
3759 if (slashp
[3] != '\0')
3760 strcpy (cp
, slashp
+ 4);
3767 else if (slashp
[2] == '/' || slashp
[2] == '\0')
3769 strcpy (slashp
, slashp
+ 2);
3774 slashp
= etags_strchr (slashp
+ 1, '/');
3780 /* Return a newly allocated string containing the absolute
3781 filename of dir where FILE resides given CWD (which should
3782 end with a slash). */
3784 absolute_dirname (file
, cwd
)
3790 slashp
= etags_strrchr (file
, '/');
3795 res
= absolute_filename (file
, cwd
);
3801 /* Like malloc but get fatal error if memory is exhausted. */
3806 char *result
= (char *) malloc (size
);
3808 fatal ("virtual memory exhausted", 0);
3813 xrealloc (ptr
, size
)
3817 char *result
= (char *) realloc (ptr
, size
);
3819 fatal ("virtual memory exhausted");