Mercurial > hg > xemacs-beta
annotate lib-src/ootags.c @ 5856:27876789edc5
Be more careful about saving a non-nil value for START in message-stack.
lisp/ChangeLog addition:
2015-03-12 Aidan Kehoe <kehoea@parhasard.net>
* simple.el (append-message): Be more careful about saving a
non-nil value for START in message-stack.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Thu, 12 Mar 2015 00:59:27 +0000 |
| parents | b3824b7f5627 |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* Tags file maker to go with GNU Emacs |
| 2 Copyright (C) 1984, 87, 88, 89, 93, 94, 95 | |
| 3 Free Software Foundation, Inc. and Ken Arnold | |
| 4 | |
| 5 This file is not considered part of GNU Emacs. | |
| 6 | |
|
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7 This program is free software: you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
| 428 | 16 |
| 17 You should have received a copy of the GNU General Public License | |
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18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* | |
| 21 * Authors: | |
| 22 * Ctags originally by Ken Arnold. | |
| 23 * Fortran added by Jim Kleckner. | |
| 24 * Ed Pelegri-Llopart added C typedefs. | |
| 25 * Gnu Emacs TAGS format and modifications by RMS? | |
| 26 * Sam Kendall added C++. | |
| 27 * Francesco Potorti` reorganised C and C++ based on work by Joe Wells. | |
| 28 * Regexp tags by Tom Tromey. | |
| 29 * | |
| 30 * Francesco Potorti` (F.Potorti@cnuce.cnr.it) is the current maintainer. | |
| 31 */ | |
| 32 | |
| 33 char pot_etags_version[] = "@(#) pot revision number is 12.28"; | |
| 34 | |
| 35 /* Prototyping magic snarfed from gmalloc.c */ | |
| 36 #if defined (__cplusplus) || defined (__STDC__) | |
| 37 #undef PP | |
| 38 #define PP(args) args | |
| 39 #undef __ptr_t | |
| 40 #define __ptr_t void * | |
| 41 #else /* Not C++ or ANSI C. */ | |
| 42 #undef PP | |
| 43 #define PP(args) () | |
| 44 #undef const | |
| 45 #define const | |
| 46 #undef __ptr_t | |
| 47 #define __ptr_t char * | |
| 48 #endif /* C++ or ANSI C. */ | |
| 49 | |
| 50 #ifdef HAVE_CONFIG_H | |
| 51 # include <config.h> | |
| 52 /* On some systems, Emacs defines static as nothing for the sake | |
| 53 of unexec. We don't want that here since we don't use unexec. */ | |
| 54 # undef static | |
| 55 # define ETAGS_REGEXPS /* use the regexp features */ | |
| 56 # define LONG_OPTIONS /* accept long options */ | |
| 57 #endif /* HAVE_CONFIG_H */ | |
| 58 | |
| 59 #define TRUE 1 | |
| 60 #define FALSE 0 | |
| 61 | |
| 62 #ifndef DEBUG | |
| 63 # define DEBUG FALSE | |
| 64 #endif | |
| 65 | |
| 442 | 66 #ifdef WIN32_NATIVE |
| 428 | 67 # include <stdlib.h> |
| 68 # include <fcntl.h> | |
| 69 # include <string.h> | |
| 70 # include <io.h> | |
| 71 # define MAXPATHLEN _MAX_PATH | |
| 442 | 72 # ifndef HAVE_CONFIG_H |
| 428 | 73 # define HAVE_GETCWD |
| 74 # endif /* not HAVE_CONFIG_H */ | |
| 442 | 75 #endif /* WIN32_NATIVE */ |
| 76 | |
| 77 #if !defined (WIN32_NATIVE) && defined (STDC_HEADERS) | |
| 428 | 78 #include <stdlib.h> |
| 79 #include <string.h> | |
| 80 #endif | |
| 81 | |
| 82 #ifdef HAVE_UNISTD_H | |
| 83 # include <unistd.h> | |
| 84 #else | |
| 85 # ifdef HAVE_GETCWD | |
| 86 extern char *getcwd (); | |
| 87 # endif | |
| 88 #endif /* HAVE_UNISTD_H */ | |
| 89 | |
| 90 #include <stdio.h> | |
| 91 #include <ctype.h> | |
| 92 #include <errno.h> | |
| 93 #include <sys/types.h> | |
| 94 #include <sys/stat.h> | |
| 95 | |
| 96 #if !defined (S_ISREG) && defined (S_IFREG) | |
| 97 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) | |
| 98 #endif | |
| 99 | |
| 100 #ifdef LONG_OPTIONS | |
| 101 # include <getopt.h> | |
| 102 #else | |
| 103 # define getopt_long(argc,argv,optstr,lopts,lind) getopt (argc, argv, optstr) | |
| 104 extern char *optarg; | |
| 105 extern int optind, opterr; | |
| 106 #endif /* LONG_OPTIONS */ | |
| 107 | |
| 108 #ifdef ETAGS_REGEXPS | |
| 109 # include <regex.h> | |
| 110 #endif /* ETAGS_REGEXPS */ | |
| 111 | |
| 112 /* Define CTAGS to make the program "ctags" compatible with the usual one. | |
| 113 Leave it undefined to make the program "etags", which makes emacs-style | |
| 114 tag tables and tags typedefs, #defines and struct/union/enum by default. */ | |
| 115 #ifdef CTAGS | |
| 116 # undef CTAGS | |
| 117 # define CTAGS TRUE | |
| 118 #else | |
| 119 # define CTAGS FALSE | |
| 120 #endif | |
| 121 | |
| 122 /* Exit codes for success and failure. */ | |
| 123 #ifdef VMS | |
| 124 # define GOOD 1 | |
| 125 # define BAD 0 | |
| 126 #else | |
| 127 # define GOOD 0 | |
| 128 # define BAD 1 | |
| 129 #endif | |
| 130 | |
| 131 /* C extensions. */ | |
| 132 #define C_PLPL 0x00001 /* C++ */ | |
| 133 #define C_STAR 0x00003 /* C* */ | |
| 134 #define C_JAVA 0x00005 /* JAVA */ | |
| 135 #define YACC 0x10000 /* yacc file */ | |
| 136 | |
| 137 #define streq(s,t) ((DEBUG && (s) == NULL && (t) == NULL \ | |
| 138 && (abort (), 1)) || !strcmp (s, t)) | |
| 139 #define strneq(s,t,n) ((DEBUG && (s) == NULL && (t) == NULL \ | |
| 140 && (abort (), 1)) || !strncmp (s, t, n)) | |
| 141 | |
| 142 #define lowcase(c) tolower ((char)c) | |
| 143 | |
| 144 #define CHARS 256 /* 2^sizeof(char) */ | |
| 145 #define CHAR(x) ((unsigned int)x & (CHARS - 1)) | |
| 146 #define iswhite(c) (_wht[CHAR(c)]) /* c is white */ | |
| 147 #define notinname(c) (_nin[CHAR(c)]) /* c is not in a name */ | |
| 148 #define begtoken(c) (_btk[CHAR(c)]) /* c can start token */ | |
| 149 #define intoken(c) (_itk[CHAR(c)]) /* c can be in token */ | |
| 150 #define endtoken(c) (_etk[CHAR(c)]) /* c ends tokens */ | |
| 151 | |
| 152 /*#ifdef INFODOCK*/ | |
| 153 /*#undef OO_BROWSER*/ | |
| 154 /* Due to the way this file is constructed, this unfortunately doesn't */ | |
| 155 /* work except for documentation purposes. -slb */ | |
| 156 #define OO_BROWSER 1 | |
| 157 /*#endif*/ | |
| 158 | |
| 159 #ifdef OO_BROWSER | |
| 160 #define set_construct(construct) \ | |
| 161 if (!oo_browser_construct) oo_browser_construct = construct | |
| 438 | 162 void oo_browser_clear_all_globals(void); |
| 163 void oo_browser_clear_some_globals(void); | |
| 164 void oo_browser_check_and_clear_structtype(void); | |
| 428 | 165 #endif |
| 166 | |
| 167 /* | |
| 168 * xnew, xrnew -- allocate, reallocate storage | |
| 169 * | |
| 170 * SYNOPSIS: Type *xnew (int n, Type); | |
| 171 * Type *xrnew (OldPointer, int n, Type); | |
| 172 */ | |
| 173 #ifdef chkmalloc | |
| 174 # include "chkmalloc.h" | |
| 175 # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \ | |
| 176 (n) * sizeof (Type))) | |
| 177 # define xrnew(op,n,Type) ((Type *) trace_realloc (__FILE__, __LINE__, \ | |
| 178 (op), (n) * sizeof (Type))) | |
| 179 #else | |
| 180 # define xnew(n,Type) ((Type *) xmalloc ((n) * sizeof (Type))) | |
| 181 # define xrnew(op,n,Type) ((Type *) xrealloc ((op), (n) * sizeof (Type))) | |
| 182 #endif | |
| 183 | |
| 184 typedef int bool; | |
| 185 | |
| 438 | 186 typedef void Lang_function (FILE *); |
| 428 | 187 |
| 188 typedef struct | |
| 189 { | |
| 190 char *name; | |
| 191 Lang_function *function; | |
| 192 char **suffixes; | |
| 193 char **interpreters; | |
| 194 } language; | |
| 195 | |
| 196 typedef struct node_st | |
| 197 { /* sorting structure */ | |
| 198 char *name; /* function or type name */ | |
| 199 #ifdef OO_BROWSER | |
| 200 short int construct; /* Construct type for the OO-Browser */ | |
| 201 #endif | |
| 202 char *file; /* file name */ | |
| 203 bool is_func; /* use pattern or line no */ | |
| 204 bool been_warned; /* set if noticed dup */ | |
| 205 int lno; /* line number tag is on */ | |
| 206 long cno; /* character number line starts on */ | |
| 207 char *pat; /* search pattern */ | |
| 208 struct node_st *left, *right; /* left and right sons */ | |
| 209 } node; | |
| 210 | |
| 211 #ifdef OO_BROWSER | |
| 212 /* If you add to this array, you must add a corresponding entry to the | |
| 213 following enum. */ | |
| 214 static char *oo_browser_default_classes[] = | |
| 215 /* Lack of square brackets around some of these entries are intentional. */ | |
| 216 {"null", "class", "method", "[constant]", "[enumeration]", "[enum_label]", | |
| 217 "extern", "[function]", "[macro]", "objc", "[structure]", "[type]", | |
| 218 "[union]", "[variable]"}; | |
| 219 | |
| 220 /* If you add to this enum, you must add a corresponding entry to the | |
| 221 preceding array. */ | |
| 222 enum oo_browser_constructs {C_NULL, C_CLASS, C_METHOD, C_CONSTANT, C_ENUMERATION, | |
| 223 C_ENUM_LABEL, C_EXTERN, C_FUNCTION, C_MACRO, | |
| 224 C_OBJC, C_STRUCTURE, C_TYPE, C_UNION, C_VARIABLE}; | |
| 225 | |
| 226 enum oo_browser_constructs oo_browser_construct = C_NULL; | |
| 227 #endif | |
| 228 | |
| 229 /* | |
| 230 * A `linebuffer' is a structure which holds a line of text. | |
| 231 * `readline_internal' reads a line from a stream into a linebuffer | |
| 232 * and works regardless of the length of the line. | |
| 233 * SIZE is the size of BUFFER, LEN is the length of the string in | |
| 234 * BUFFER after readline reads it. | |
| 235 */ | |
| 236 typedef struct | |
| 237 { | |
| 238 long size; | |
| 239 int len; | |
| 240 char *buffer; | |
| 241 } linebuffer; | |
| 242 | |
| 243 extern char *getenv PP ((const char *envvar)); | |
| 244 | |
| 245 /* Many compilers barf on this: | |
| 246 Lang_function Asm_labels; | |
| 247 so let's write it this way */ | |
| 248 void Asm_labels PP ((FILE *inf)); | |
| 249 void C_entries PP ((int c_ext, FILE *inf)); | |
| 250 void default_C_entries PP ((FILE *inf)); | |
| 251 void plain_C_entries PP ((FILE *inf)); | |
| 252 void Cjava_entries PP ((FILE *inf)); | |
| 253 void Cplusplus_entries PP ((FILE *inf)); | |
| 254 void Yacc_entries PP ((FILE *inf)); | |
| 255 void Cobol_paragraphs PP ((FILE *inf)); | |
| 256 void Cstar_entries PP ((FILE *inf)); | |
| 257 void Erlang_functions PP ((FILE *inf)); | |
| 258 void Fortran_functions PP ((FILE *inf)); | |
| 259 void Lisp_functions PP ((FILE *inf)); | |
| 260 void Pascal_functions PP ((FILE *inf)); | |
| 261 void Perl_functions PP ((FILE *inf)); | |
| 262 void Postscript_functions PP ((FILE *inf)); | |
| 263 void Prolog_functions PP ((FILE *inf)); | |
| 264 void Python_functions PP ((FILE *inf)); | |
| 265 void Scheme_functions PP ((FILE *inf)); | |
| 266 void TeX_functions PP ((FILE *inf)); | |
| 267 void just_read_file PP ((FILE *inf)); | |
| 268 | |
| 269 void print_language_names PP ((void)); | |
| 270 void print_version PP ((void)); | |
| 271 void print_help PP ((void)); | |
| 272 | |
| 273 language *get_language_from_name PP ((char *name)); | |
| 274 language *get_language_from_interpreter PP ((char *interpreter)); | |
| 275 language *get_language_from_suffix PP ((char *suffix)); | |
| 276 int total_size_of_entries PP ((node *np)); | |
| 277 long readline PP ((linebuffer *lbp, FILE *stream)); | |
| 278 long readline_internal PP ((linebuffer *lbp, FILE *stream)); | |
| 279 #ifdef ETAGS_REGEXPS | |
| 280 void analyse_regex PP ((char *regex_arg)); | |
| 281 void add_regex PP ((char *regexp_pattern, language *lang)); | |
| 282 void free_patterns PP ((void)); | |
| 283 #endif /* ETAGS_REGEXPS */ | |
| 284 void error PP ((const char *s1, const char *s2)); | |
| 285 void suggest_asking_for_help PP ((void)); | |
| 286 void fatal PP ((char *s1, char *s2)); | |
| 287 void pfatal PP ((char *s1)); | |
| 288 void add_node PP ((node *np, node **cur_node_p)); | |
| 289 | |
| 290 void init PP ((void)); | |
| 291 void initbuffer PP ((linebuffer *lbp)); | |
| 292 void find_entries PP ((char *file, FILE *inf)); | |
| 293 void free_tree PP ((node *np)); | |
| 294 void pfnote PP ((char *name, bool is_func, char *linestart, int linelen, int lno, long cno)); | |
| 295 void new_pfnote PP ((char *name, int namelen, bool is_func, char *linestart, int linelen, int lno, long cno)); | |
| 296 void process_file PP ((char *file)); | |
| 297 void put_entries PP ((node *np)); | |
| 298 void takeprec PP ((void)); | |
| 299 | |
| 300 char *concat PP ((char *s1, char *s2, char *s3)); | |
| 301 char *skip_spaces PP ((char *cp)); | |
| 302 char *skip_non_spaces PP ((char *cp)); | |
| 303 char *savenstr PP ((char *cp, int len)); | |
| 304 char *savestr PP ((char *cp)); | |
| 305 char *etags_strchr PP ((char *sp, int c)); | |
| 306 char *etags_strrchr PP ((char *sp, int c)); | |
| 307 char *etags_getcwd PP ((void)); | |
| 308 char *relative_filename PP ((char *file, char *dir)); | |
| 309 char *absolute_filename PP ((char *file, char *dir)); | |
| 310 char *absolute_dirname PP ((char *file, char *dir)); | |
| 311 bool filename_is_absolute PP ((char *fn)); | |
| 312 void canonicalize_filename PP ((char *fn)); | |
| 313 void grow_linebuffer PP ((linebuffer *lbp, int toksize)); | |
| 314 long *xmalloc PP ((unsigned int size)); | |
| 315 long *xrealloc PP ((char *ptr, unsigned int size)); | |
| 316 | |
| 317 | |
| 318 char searchar = '/'; /* use /.../ searches */ | |
| 319 | |
| 320 char *tagfile; /* output file */ | |
| 321 char *progname; /* name this program was invoked with */ | |
| 322 char *cwd; /* current working directory */ | |
| 323 char *tagfiledir; /* directory of tagfile */ | |
| 324 FILE *tagf; /* ioptr for tags file */ | |
| 325 | |
| 326 char *curfile; /* current input file name */ | |
| 327 language *curlang; /* current language */ | |
| 328 | |
| 329 int lineno; /* line number of current line */ | |
| 330 long charno; /* current character number */ | |
| 331 long linecharno; /* charno of start of current line */ | |
| 332 char *dbp; /* pointer to start of current tag */ | |
| 333 node *head; /* the head of the binary tree of tags */ | |
| 334 | |
| 335 linebuffer lb; /* the current line */ | |
| 336 linebuffer token_name; /* used by C_entries as a temporary area */ | |
| 337 struct | |
| 338 { | |
| 339 long linepos; | |
| 340 linebuffer lb; /* used by C_entries instead of lb */ | |
| 341 } lbs[2]; | |
| 342 | |
| 343 /* boolean "functions" (see init) */ | |
| 344 bool _wht[CHARS], _nin[CHARS], _itk[CHARS], _btk[CHARS], _etk[CHARS]; | |
| 345 char | |
| 346 /* white chars */ | |
| 347 *white = " \f\t\n\r", | |
| 348 /* not in a name */ | |
| 349 *nonam = " \f\t\n\r(=,[;", | |
| 350 /* token ending chars */ | |
| 351 *endtk = " \t\n\r\"'#()[]{}=-+%*/&|^~!<>;,.:?", | |
| 352 /* token starting chars */ | |
| 353 *begtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$~@", | |
| 354 /* valid in-token chars */ | |
| 355 *midtk = "ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz$0123456789"; | |
| 356 | |
| 357 bool append_to_tagfile; /* -a: append to tags */ | |
| 358 /* The following four default to TRUE for etags, but to FALSE for ctags. */ | |
| 359 bool typedefs; /* -t: create tags for C typedefs */ | |
| 360 bool typedefs_and_cplusplus; /* -T: create tags for C typedefs, level */ | |
| 361 /* 0 struct/enum/union decls, and C++ */ | |
| 362 /* member functions. */ | |
| 363 bool constantypedefs; /* -d: create tags for C #define, enum */ | |
| 364 /* constants and variables. */ | |
| 365 /* -D: opposite of -d. Default under ctags. */ | |
| 366 bool globals; /* create tags for global variables */ | |
| 367 bool members; /* create tags for C member variables */ | |
| 368 bool update; /* -u: update tags */ | |
| 369 bool vgrind_style; /* -v: create vgrind style index output */ | |
| 370 bool no_warnings; /* -w: suppress warnings */ | |
| 371 bool cxref_style; /* -x: create cxref style output */ | |
| 372 bool cplusplus; /* .[hc] means C++, not C */ | |
| 373 bool noindentypedefs; /* -I: ignore indentation in C */ | |
| 374 #ifdef OO_BROWSER | |
| 375 bool oo_browser_format; /* -O: OO-Browser tags format */ | |
| 376 #endif | |
| 377 | |
| 378 #ifdef LONG_OPTIONS | |
| 379 struct option longopts[] = | |
| 380 { | |
| 381 { "append", no_argument, NULL, 'a' }, | |
| 382 { "backward-search", no_argument, NULL, 'B' }, | |
| 383 { "c++", no_argument, NULL, 'C' }, | |
| 384 { "cxref", no_argument, NULL, 'x' }, | |
| 385 { "defines", no_argument, NULL, 'd' }, | |
| 386 { "no-defines", no_argument, NULL, 'D' }, | |
| 387 { "globals", no_argument, &globals, TRUE }, | |
| 388 { "no-globals", no_argument, &globals, FALSE }, | |
| 389 { "help", no_argument, NULL, 'h' }, | |
| 390 { "help", no_argument, NULL, 'H' }, | |
| 391 { "ignore-indentation", no_argument, NULL, 'I' }, | |
| 392 { "include", required_argument, NULL, 'i' }, | |
| 393 { "language", required_argument, NULL, 'l' }, | |
| 394 { "members", no_argument, &members, TRUE }, | |
| 395 { "no-members", no_argument, &members, FALSE }, | |
| 396 { "no-warn", no_argument, NULL, 'w' }, | |
| 397 { "output", required_argument, NULL, 'o' }, | |
| 398 #ifdef OO_BROWSER | |
| 399 { "oo-browser", no_argument, NULL, 'O' }, | |
| 400 #endif | |
| 401 #ifdef ETAGS_REGEXPS | |
| 402 { "regex", required_argument, NULL, 'r' }, | |
| 403 { "no-regex", no_argument, NULL, 'R' }, | |
| 404 #endif /* ETAGS_REGEXPS */ | |
| 405 { "typedefs", no_argument, NULL, 't' }, | |
| 406 { "typedefs-and-c++", no_argument, NULL, 'T' }, | |
| 407 { "update", no_argument, NULL, 'u' }, | |
| 408 { "version", no_argument, NULL, 'V' }, | |
| 409 { "vgrind", no_argument, NULL, 'v' }, | |
| 410 { 0 } | |
| 411 }; | |
| 412 #endif /* LONG_OPTIONS */ | |
| 413 | |
| 414 #ifdef ETAGS_REGEXPS | |
| 415 /* Structure defining a regular expression. Elements are | |
| 416 the compiled pattern, and the name string. */ | |
| 417 typedef struct pattern | |
| 418 { | |
| 419 struct pattern *p_next; | |
| 420 language *language; | |
| 421 char *regex; | |
| 422 struct re_pattern_buffer *pattern; | |
| 423 struct re_registers regs; | |
| 424 char *name_pattern; | |
| 425 bool error_signaled; | |
| 426 } pattern; | |
| 427 | |
| 428 /* Array of all regexps. */ | |
| 429 pattern *p_head = NULL; | |
| 430 #endif /* ETAGS_REGEXPS */ | |
| 431 | |
| 432 /* | |
| 433 * Language stuff. | |
| 434 */ | |
| 435 | |
| 436 /* Non-NULL if language fixed. */ | |
| 437 language *forced_lang = NULL; | |
| 438 | |
| 439 /* Assembly code */ | |
| 440 char *Asm_suffixes [] = { "a", /* Unix assembler */ | |
| 441 "asm", /* Microcontroller assembly */ | |
| 442 "def", /* BSO/Tasking definition includes */ | |
| 443 "inc", /* Microcontroller include files */ | |
| 444 "ins", /* Microcontroller include files */ | |
| 445 "s", "sa", /* Unix assembler */ | |
| 446 "src", /* BSO/Tasking C compiler output */ | |
| 447 NULL | |
| 448 }; | |
| 449 | |
| 450 /* Note that .c and .h can be considered C++, if the --c++ flag was | |
| 451 given. That is why default_C_entries is called here. */ | |
| 452 char *default_C_suffixes [] = | |
| 453 { "c", "h", NULL }; | |
| 454 | |
| 455 char *Cplusplus_suffixes [] = | |
| 456 { "C", "H", "c++", "cc", "cpp", "cxx", "h++", "hh", "hpp", "hxx", | |
| 457 "M", /* Objective C++ */ | |
| 458 "pdb", /* Postscript with C syntax */ | |
| 459 NULL }; | |
| 460 | |
| 461 char *Cjava_suffixes [] = | |
| 462 { "java", NULL }; | |
| 463 | |
| 464 char *Cobol_suffixes [] = | |
| 465 { "COB", "cob", NULL }; | |
| 466 | |
| 467 char *Cstar_suffixes [] = | |
| 468 { "cs", "hs", NULL }; | |
| 469 | |
| 470 char *Erlang_suffixes [] = | |
| 471 { "erl", "hrl", NULL }; | |
| 472 | |
| 473 char *Fortran_suffixes [] = | |
| 474 { "F", "f", "f90", "for", NULL }; | |
| 475 | |
| 476 char *Lisp_suffixes [] = | |
| 477 { "cl", "clisp", "el", "l", "lisp", "lsp", "ml", NULL }; | |
| 478 | |
| 479 char *Pascal_suffixes [] = | |
| 480 { "p", "pas", NULL }; | |
| 481 | |
| 482 char *Perl_suffixes [] = | |
| 483 { "pl", "pm", NULL }; | |
| 484 char *Perl_interpreters [] = | |
| 485 { "perl", "@PERL@", NULL }; | |
| 486 | |
| 487 char *plain_C_suffixes [] = | |
| 488 { "pc", /* Pro*C file */ | |
| 489 "m", /* Objective C file */ | |
| 490 "lm", /* Objective lex file */ | |
| 491 NULL }; | |
| 492 | |
| 493 char *Postscript_suffixes [] = | |
| 494 { "ps", NULL }; | |
| 495 | |
| 496 char *Prolog_suffixes [] = | |
| 497 { "prolog", NULL }; | |
| 498 | |
| 499 char *Python_suffixes [] = | |
| 500 { "py", NULL }; | |
| 501 | |
| 502 /* Can't do the `SCM' or `scm' prefix with a version number. */ | |
| 503 char *Scheme_suffixes [] = | |
| 504 { "SCM", "SM", "oak", "sch", "scheme", "scm", "sm", "ss", "t", NULL }; | |
| 505 | |
| 506 char *TeX_suffixes [] = | |
| 507 { "TeX", "bib", "clo", "cls", "ltx", "sty", "tex", NULL }; | |
| 508 | |
| 509 char *Yacc_suffixes [] = | |
| 510 { "y", "ym", NULL }; /* .ym is Objective yacc file */ | |
| 511 | |
| 512 /* | |
| 513 * Table of languages. | |
| 514 * | |
| 515 * It is ok for a given function to be listed under more than one | |
| 516 * name. I just didn't. | |
| 517 */ | |
| 518 | |
| 519 language lang_names [] = | |
| 520 { | |
| 521 { "asm", Asm_labels, Asm_suffixes, NULL }, | |
| 522 { "c", default_C_entries, default_C_suffixes, NULL }, | |
| 523 { "c++", Cplusplus_entries, Cplusplus_suffixes, NULL }, | |
| 524 { "c*", Cstar_entries, Cstar_suffixes, NULL }, | |
| 525 { "cobol", Cobol_paragraphs, Cobol_suffixes, NULL }, | |
| 526 { "erlang", Erlang_functions, Erlang_suffixes, NULL }, | |
| 527 { "fortran", Fortran_functions, Fortran_suffixes, NULL }, | |
| 528 { "java", Cjava_entries, Cjava_suffixes, NULL }, | |
| 529 { "lisp", Lisp_functions, Lisp_suffixes, NULL }, | |
| 530 { "pascal", Pascal_functions, Pascal_suffixes, NULL }, | |
| 531 { "perl", Perl_functions, Perl_suffixes, Perl_interpreters }, | |
| 532 { "postscript", Postscript_functions, Postscript_suffixes, NULL }, | |
| 533 { "proc", plain_C_entries, plain_C_suffixes, NULL }, | |
| 534 { "prolog", Prolog_functions, Prolog_suffixes, NULL }, | |
| 535 { "python", Python_functions, Python_suffixes, NULL }, | |
| 536 { "scheme", Scheme_functions, Scheme_suffixes, NULL }, | |
| 537 { "tex", TeX_functions, TeX_suffixes, NULL }, | |
| 538 { "yacc", Yacc_entries, Yacc_suffixes, NULL }, | |
| 539 { "auto", NULL }, /* default guessing scheme */ | |
| 540 { "none", just_read_file }, /* regexp matching only */ | |
| 541 { NULL, NULL } /* end of list */ | |
| 542 }; | |
| 543 | |
| 544 | |
| 545 void | |
| 546 print_language_names () | |
| 547 { | |
| 548 language *lang; | |
| 549 char **ext; | |
| 550 | |
| 551 puts ("\nThese are the currently supported languages, along with the\n\ | |
| 552 default file name suffixes:"); | |
| 553 for (lang = lang_names; lang->name != NULL; lang++) | |
| 554 { | |
| 555 printf ("\t%s\t", lang->name); | |
| 556 if (lang->suffixes != NULL) | |
| 557 for (ext = lang->suffixes; *ext != NULL; ext++) | |
| 558 printf (" .%s", *ext); | |
| 559 puts (""); | |
| 560 } | |
| 561 puts ("Where `auto' means use default language for files based on file\n\ | |
| 562 name suffix, and `none' means only do regexp processing on files.\n\ | |
| 563 If no language is specified and no matching suffix is found,\n\ | |
| 564 the first line of the file is read for a sharp-bang (#!) sequence\n\ | |
| 565 followed by the name of an interpreter. If no such sequence is found,\n\ | |
| 566 Fortran is tried first; if no tags are found, C is tried next."); | |
| 567 } | |
| 568 | |
| 569 #ifndef VERSION | |
| 570 # define VERSION "20" | |
| 571 #endif | |
| 572 void | |
| 573 print_version () | |
| 574 { | |
| 575 printf ("%s (GNU Emacs %s)\n", (CTAGS) ? "ctags" : "etags", VERSION); | |
| 576 puts ("Copyright (C) 1996 Free Software Foundation, Inc. and Ken Arnold"); | |
| 577 puts ("This program is distributed under the same terms as Emacs"); | |
| 578 | |
| 579 exit (GOOD); | |
| 580 } | |
| 581 | |
| 582 void | |
| 583 print_help () | |
| 584 { | |
| 585 printf ("Usage: %s [options] [[regex-option ...] file-name] ...\n\ | |
| 586 \n\ | |
| 587 These are the options accepted by %s.\n", progname, progname); | |
| 588 #ifdef LONG_OPTIONS | |
| 589 puts ("You may use unambiguous abbreviations for the long option names."); | |
| 590 #else | |
| 591 puts ("Long option names do not work with this executable, as it is not\n\ | |
| 592 linked with GNU getopt."); | |
| 593 #endif /* LONG_OPTIONS */ | |
| 594 puts ("A - as file name means read names from stdin (one per line)."); | |
| 595 if (!CTAGS) | |
| 596 printf (" Absolute names are stored in the output file as they are.\n\ | |
| 597 Relative ones are stored relative to the output file's directory."); | |
| 598 puts ("\n"); | |
| 599 | |
| 600 puts ("-a, --append\n\ | |
| 601 Append tag entries to existing tags file."); | |
| 602 | |
| 603 if (CTAGS) | |
| 604 puts ("-B, --backward-search\n\ | |
| 605 Write the search commands for the tag entries using '?', the\n\ | |
| 606 backward-search command instead of '/', the forward-search command."); | |
| 607 | |
| 608 puts ("-C, --c++\n\ | |
| 609 Treat files whose name suffix defaults to C language as C++ files."); | |
| 610 | |
| 611 if (CTAGS) | |
| 612 puts ("-d, --defines\n\ | |
| 613 Create tag entries for C #define constants and enum constants, too."); | |
| 614 else | |
| 615 puts ("-D, --no-defines\n\ | |
| 616 Don't create tag entries for C #define constants and enum constants.\n\ | |
| 617 This makes the tags file smaller."); | |
| 618 | |
| 619 if (!CTAGS) | |
| 620 { | |
| 621 puts ("-i FILE, --include=FILE\n\ | |
| 622 Include a note in tag file indicating that, when searching for\n\ | |
| 623 a tag, one should also consult the tags file FILE after\n\ | |
| 624 checking the current file."); | |
| 625 puts ("-l LANG, --language=LANG\n\ | |
| 626 Force the following files to be considered as written in the\n\ | |
| 627 named language up to the next --language=LANG option."); | |
| 628 } | |
| 629 | |
| 630 if (CTAGS) | |
| 631 puts ("--globals\n\ | |
| 632 Create tag entries for global variables in some languages."); | |
| 633 else | |
| 634 puts ("--no-globals\n\ | |
| 635 Do not create tag entries for global variables in some\n\ | |
| 636 languages. This makes the tags file smaller."); | |
| 637 puts ("--members\n\ | |
| 638 Create tag entries for member variables in C and derived languages."); | |
| 639 | |
| 640 #ifdef ETAGS_REGEXPS | |
| 641 puts ("-r /REGEXP/, --regex=/REGEXP/ or --regex=@regexfile\n\ | |
| 642 Make a tag for each line matching pattern REGEXP in the\n\ | |
| 643 following files. regexfile is a file containing one REGEXP\n\ | |
| 644 per line. REGEXP is anchored (as if preceded by ^).\n\ | |
| 645 The form /REGEXP/NAME/ creates a named tag. For example Tcl\n\ | |
| 646 named tags can be created with:\n\ | |
| 647 --regex=/proc[ \\t]+\\([^ \\t]+\\)/\\1/."); | |
| 648 puts ("-R, --no-regex\n\ | |
| 649 Don't create tags from regexps for the following files."); | |
| 650 #endif /* ETAGS_REGEXPS */ | |
| 651 puts ("-o FILE, --output=FILE\n\ | |
| 652 Write the tags to FILE."); | |
| 653 #ifdef OO_BROWSER | |
| 654 puts ("-O, --oo-browser\n\ | |
| 655 Generate a specialized tags format used only by the Altrasoft OO-Browser."); | |
| 656 #endif | |
| 657 puts ("-I, --ignore-indentation\n\ | |
| 658 Don't rely on indentation quite as much as normal. Currently,\n\ | |
| 659 this means not to assume that a closing brace in the first\n\ | |
| 660 column is the final brace of a function or structure\n\ | |
| 661 definition in C and C++."); | |
| 662 | |
| 663 if (CTAGS) | |
| 664 { | |
| 665 puts ("-t, --typedefs\n\ | |
| 666 Generate tag entries for C typedefs."); | |
| 667 puts ("-T, --typedefs-and-c++\n\ | |
| 668 Generate tag entries for C typedefs, C struct/enum/union tags,\n\ | |
| 669 and C++ member functions."); | |
| 670 puts ("-u, --update\n\ | |
| 671 Update the tag entries for the given files, leaving tag\n\ | |
| 672 entries for other files in place. Currently, this is\n\ | |
| 673 implemented by deleting the existing entries for the given\n\ | |
| 674 files and then rewriting the new entries at the end of the\n\ | |
| 675 tags file. It is often faster to simply rebuild the entire\n\ | |
| 676 tag file than to use this."); | |
| 677 puts ("-v, --vgrind\n\ | |
| 678 Generates an index of items intended for human consumption,\n\ | |
| 679 similar to the output of vgrind. The index is sorted, and\n\ | |
| 680 gives the page number of each item."); | |
| 681 puts ("-w, --no-warn\n\ | |
| 682 Suppress warning messages about entries defined in multiple\n\ | |
| 683 files."); | |
| 684 puts ("-x, --cxref\n\ | |
| 685 Like --vgrind, but in the style of cxref, rather than vgrind.\n\ | |
| 686 The output uses line numbers instead of page numbers, but\n\ | |
| 687 beyond that the differences are cosmetic; try both to see\n\ | |
| 688 which you like."); | |
| 689 } | |
| 690 | |
| 691 puts ("-V, --version\n\ | |
| 692 Print the version of the program.\n\ | |
| 693 -h, --help\n\ | |
| 694 Print this help message."); | |
| 695 | |
| 696 print_language_names (); | |
| 697 | |
| 698 puts (""); | |
| 699 puts ("Report bugs to bug-gnu-emacs@prep.ai.mit.edu"); | |
| 700 | |
| 701 exit (GOOD); | |
| 702 } | |
| 703 | |
| 704 | |
| 705 enum argument_type | |
| 706 { | |
| 707 at_language, | |
| 708 at_regexp, | |
| 709 at_filename | |
| 710 }; | |
| 711 | |
| 712 /* This structure helps us allow mixing of --lang and file names. */ | |
| 713 typedef struct | |
| 714 { | |
| 715 enum argument_type arg_type; | |
| 716 char *what; | |
| 717 language *lang; | |
| 718 } argument; | |
| 719 | |
| 720 #ifdef VMS /* VMS specific functions */ | |
| 721 | |
| 722 #define EOS '\0' | |
| 723 | |
| 724 /* This is a BUG! ANY arbitrary limit is a BUG! | |
| 725 Won't someone please fix this? */ | |
| 726 #define MAX_FILE_SPEC_LEN 255 | |
| 727 typedef struct { | |
| 728 short curlen; | |
| 729 char body[MAX_FILE_SPEC_LEN + 1]; | |
| 730 } vspec; | |
| 731 | |
| 732 /* | |
| 733 v1.05 nmm 26-Jun-86 fn_exp - expand specification of list of file names | |
| 734 returning in each successive call the next file name matching the input | |
| 735 spec. The function expects that each in_spec passed | |
| 736 to it will be processed to completion; in particular, up to and | |
| 737 including the call following that in which the last matching name | |
| 738 is returned, the function ignores the value of in_spec, and will | |
| 739 only start processing a new spec with the following call. | |
| 740 If an error occurs, on return out_spec contains the value | |
| 741 of in_spec when the error occurred. | |
| 742 | |
| 743 With each successive file name returned in out_spec, the | |
| 744 function's return value is one. When there are no more matching | |
| 745 names the function returns zero. If on the first call no file | |
| 746 matches in_spec, or there is any other error, -1 is returned. | |
| 747 */ | |
| 748 | |
| 749 #include <rmsdef.h> | |
| 750 #include <descrip.h> | |
| 751 #define OUTSIZE MAX_FILE_SPEC_LEN | |
| 752 short | |
| 753 fn_exp (out, in) | |
| 754 vspec *out; | |
| 755 char *in; | |
| 756 { | |
| 757 static long context = 0; | |
| 758 static struct dsc$descriptor_s o; | |
| 759 static struct dsc$descriptor_s i; | |
| 760 static bool pass1 = TRUE; | |
| 761 long status; | |
| 762 short retval; | |
| 763 | |
| 764 if (pass1) | |
| 765 { | |
| 766 pass1 = FALSE; | |
| 767 o.dsc$a_pointer = (char *) out; | |
| 768 o.dsc$w_length = (short)OUTSIZE; | |
| 769 i.dsc$a_pointer = in; | |
| 770 i.dsc$w_length = (short)strlen(in); | |
| 771 i.dsc$b_dtype = DSC$K_DTYPE_T; | |
| 772 i.dsc$b_class = DSC$K_CLASS_S; | |
| 773 o.dsc$b_dtype = DSC$K_DTYPE_VT; | |
| 774 o.dsc$b_class = DSC$K_CLASS_VS; | |
| 775 } | |
| 776 if ((status = lib$find_file(&i, &o, &context, 0, 0)) == RMS$_NORMAL) | |
| 777 { | |
| 778 out->body[out->curlen] = EOS; | |
| 779 return 1; | |
| 780 } | |
| 781 else if (status == RMS$_NMF) | |
| 782 retval = 0; | |
| 783 else | |
| 784 { | |
| 785 strcpy(out->body, in); | |
| 786 retval = -1; | |
| 787 } | |
| 788 lib$find_file_end(&context); | |
| 789 pass1 = TRUE; | |
| 790 return retval; | |
| 791 } | |
| 792 | |
| 793 /* | |
| 794 v1.01 nmm 19-Aug-85 gfnames - return in successive calls the | |
| 795 name of each file specified by the provided arg expanding wildcards. | |
| 796 */ | |
| 797 char * | |
| 798 gfnames (arg, p_error) | |
| 799 char *arg; | |
| 800 bool *p_error; | |
| 801 { | |
| 802 static vspec filename = {MAX_FILE_SPEC_LEN, "\0"}; | |
| 803 | |
| 804 switch (fn_exp (&filename, arg)) | |
| 805 { | |
| 806 case 1: | |
| 807 *p_error = FALSE; | |
| 808 return filename.body; | |
| 809 case 0: | |
| 810 *p_error = FALSE; | |
| 811 return NULL; | |
| 812 default: | |
| 813 *p_error = TRUE; | |
| 814 return filename.body; | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 #ifndef OLD /* Newer versions of VMS do provide `system'. */ | |
| 819 system (cmd) | |
| 820 char *cmd; | |
| 821 { | |
| 822 error ("%s", "system() function not implemented under VMS"); | |
| 823 } | |
| 824 #endif | |
| 825 | |
| 826 #define VERSION_DELIM ';' | |
| 827 char *massage_name (s) | |
| 828 char *s; | |
| 829 { | |
| 830 char *start = s; | |
| 831 | |
| 832 for ( ; *s; s++) | |
| 833 if (*s == VERSION_DELIM) | |
| 834 { | |
| 835 *s = EOS; | |
| 836 break; | |
| 837 } | |
| 838 else | |
| 839 *s = lowcase (*s); | |
| 840 return start; | |
| 841 } | |
| 842 #endif /* VMS */ | |
| 843 | |
| 844 | |
| 845 int | |
| 438 | 846 main (int argc, char *argv[]) |
| 428 | 847 { |
| 848 int i; | |
| 849 unsigned int nincluded_files; | |
| 850 char **included_files; | |
| 851 char *this_file; | |
| 852 argument *argbuffer; | |
| 853 int current_arg, file_count; | |
| 854 linebuffer filename_lb; | |
| 855 #ifdef VMS | |
| 856 bool got_err; | |
| 857 #endif | |
| 858 | |
| 442 | 859 #ifdef WIN32_NATIVE |
| 428 | 860 _fmode = O_BINARY; /* all of files are treated as binary files */ |
| 442 | 861 #endif /* WIN32_NATIVE */ |
| 428 | 862 |
| 863 progname = argv[0]; | |
| 864 nincluded_files = 0; | |
| 865 included_files = xnew (argc, char *); | |
| 866 current_arg = 0; | |
| 867 file_count = 0; | |
| 868 | |
| 869 /* Allocate enough no matter what happens. Overkill, but each one | |
| 870 is small. */ | |
| 871 argbuffer = xnew (argc, argument); | |
| 872 | |
| 873 #ifdef ETAGS_REGEXPS | |
| 874 /* Set syntax for regular expression routines. */ | |
| 875 re_set_syntax (RE_SYNTAX_EMACS | RE_INTERVALS); | |
| 876 #endif /* ETAGS_REGEXPS */ | |
| 877 | |
| 878 /* | |
| 879 * If etags, always find typedefs and structure tags. Why not? | |
| 880 * Also default is to find macro constants, enum constants and | |
| 881 * global variables. | |
| 882 */ | |
| 883 if (!CTAGS) | |
| 884 { | |
| 885 typedefs = typedefs_and_cplusplus = constantypedefs = TRUE; | |
| 886 globals = TRUE; | |
| 887 members = FALSE; | |
| 888 } | |
| 889 | |
| 890 while (1) | |
| 891 { | |
| 892 int opt; | |
| 893 char *optstring; | |
| 894 | |
| 895 #ifdef ETAGS_REGEXPS | |
| 896 #ifndef OO_BROWSER | |
| 897 optstring = "-aCdDf:Il:o:r:RStTi:BuvxwVhH"; | |
| 898 #else | |
| 899 optstring = "-aCdDf:Il:o:r:RStTi:BOuvxwVhH"; | |
| 900 #endif | |
| 901 #else | |
| 902 #ifndef OO_BROWSER | |
| 903 optstring = "-aCdDf:Il:o:StTi:BuvxwVhH"; | |
| 904 #else | |
| 905 optstring = "-aCdDf:Il:o:StTi:BOuvxwVhH"; | |
| 906 #endif | |
| 907 #endif /* ETAGS_REGEXPS */ | |
| 908 | |
| 909 #ifndef LONG_OPTIONS | |
| 910 optstring = optstring + 1; | |
| 911 #endif /* LONG_OPTIONS */ | |
| 912 | |
| 913 opt = getopt_long (argc, argv, optstring, longopts, 0); | |
| 914 if (opt == EOF) | |
| 915 break; | |
| 916 | |
| 917 switch (opt) | |
| 918 { | |
| 919 case 0: | |
| 920 /* If getopt returns 0, then it has already processed a | |
| 921 long-named option. We should do nothing. */ | |
| 922 break; | |
| 923 | |
| 924 case 1: | |
| 925 /* This means that a file name has been seen. Record it. */ | |
| 926 argbuffer[current_arg].arg_type = at_filename; | |
| 927 argbuffer[current_arg].what = optarg; | |
| 928 ++current_arg; | |
| 929 ++file_count; | |
| 930 break; | |
| 931 | |
| 932 /* Common options. */ | |
| 933 case 'a': append_to_tagfile = TRUE; break; | |
| 934 case 'C': cplusplus = TRUE; break; | |
| 935 case 'd': constantypedefs = TRUE; break; | |
| 936 case 'D': constantypedefs = FALSE; break; | |
| 937 case 'f': /* for compatibility with old makefiles */ | |
| 938 case 'o': | |
| 939 if (tagfile) | |
| 940 { | |
| 941 /* convert char to string, to call error with */ | |
| 942 char buf[2]; | |
| 943 sprintf (buf, "%c", opt); | |
| 944 error ("-%s option may only be given once.", buf); | |
| 945 suggest_asking_for_help (); | |
| 946 } | |
| 947 tagfile = optarg; | |
| 948 break; | |
| 949 #ifdef OO_BROWSER | |
| 950 case 'O': | |
| 951 oo_browser_format = TRUE; | |
| 952 break; | |
| 953 #endif | |
| 954 case 'I': | |
| 955 case 'S': /* for backward compatibility */ | |
| 956 noindentypedefs = TRUE; | |
| 957 break; | |
| 958 case 'l': | |
| 959 { | |
| 960 language *lang = get_language_from_name (optarg); | |
| 961 if (lang != NULL) | |
| 962 { | |
| 963 argbuffer[current_arg].lang = lang; | |
| 964 argbuffer[current_arg].arg_type = at_language; | |
| 965 ++current_arg; | |
| 966 } | |
| 967 } | |
| 968 break; | |
| 969 #ifdef ETAGS_REGEXPS | |
| 970 case 'r': | |
| 971 argbuffer[current_arg].arg_type = at_regexp; | |
| 972 argbuffer[current_arg].what = optarg; | |
| 973 ++current_arg; | |
| 974 break; | |
| 975 case 'R': | |
| 976 argbuffer[current_arg].arg_type = at_regexp; | |
| 977 argbuffer[current_arg].what = NULL; | |
| 978 ++current_arg; | |
| 979 break; | |
| 980 #endif /* ETAGS_REGEXPS */ | |
| 981 case 'V': | |
| 982 print_version (); | |
| 983 break; | |
| 984 case 'h': | |
| 985 case 'H': | |
| 986 print_help (); | |
| 987 break; | |
| 988 case 't': | |
| 989 typedefs = TRUE; | |
| 990 break; | |
| 991 case 'T': | |
| 992 typedefs = typedefs_and_cplusplus = TRUE; | |
| 993 break; | |
| 994 #if (!CTAGS) | |
| 995 /* Etags options */ | |
| 996 case 'i': | |
| 997 included_files[nincluded_files++] = optarg; | |
| 998 break; | |
| 999 #else /* CTAGS */ | |
| 1000 /* Ctags options. */ | |
| 1001 case 'B': searchar = '?'; break; | |
| 1002 case 'u': update = TRUE; break; | |
| 1003 case 'v': vgrind_style = TRUE; /*FALLTHRU*/ | |
| 1004 case 'x': cxref_style = TRUE; break; | |
| 1005 case 'w': no_warnings = TRUE; break; | |
| 1006 #endif /* CTAGS */ | |
| 1007 default: | |
| 1008 suggest_asking_for_help (); | |
| 1009 } | |
| 1010 } | |
| 1011 | |
| 1012 for (; optind < argc; ++optind) | |
| 1013 { | |
| 1014 argbuffer[current_arg].arg_type = at_filename; | |
| 1015 argbuffer[current_arg].what = argv[optind]; | |
| 1016 ++current_arg; | |
| 1017 ++file_count; | |
| 1018 } | |
| 1019 | |
| 1020 if (nincluded_files == 0 && file_count == 0) | |
| 1021 { | |
| 1022 error ("no input files specified.", 0); | |
| 1023 suggest_asking_for_help (); | |
| 1024 } | |
| 1025 | |
| 1026 if (tagfile == NULL) | |
| 1027 tagfile = CTAGS ? "tags" : "TAGS"; | |
| 1028 cwd = etags_getcwd (); /* the current working directory */ | |
| 1029 if (cwd[strlen (cwd) - 1] != '/') | |
| 1030 { | |
| 1031 char *oldcwd = cwd; | |
| 1032 cwd = concat (oldcwd, "/", ""); | |
| 1033 free (oldcwd); | |
| 1034 } | |
| 1035 if (streq (tagfile, "-")) | |
| 1036 tagfiledir = cwd; | |
| 1037 else | |
| 1038 tagfiledir = absolute_dirname (tagfile, cwd); | |
| 1039 | |
| 1040 init (); /* set up boolean "functions" */ | |
| 1041 | |
| 1042 initbuffer (&lb); | |
| 1043 initbuffer (&token_name); | |
| 1044 initbuffer (&lbs[0].lb); | |
| 1045 initbuffer (&lbs[1].lb); | |
| 1046 initbuffer (&filename_lb); | |
| 1047 | |
| 1048 if (!CTAGS) | |
| 1049 { | |
| 1050 if (streq (tagfile, "-")) | |
| 1051 { | |
| 1052 tagf = stdout; | |
| 442 | 1053 #ifdef WIN32_NATIVE |
| 428 | 1054 /* Switch redirected `stdout' to binary mode (setting `_fmode' |
| 1055 doesn't take effect until after `stdout' is already open). */ | |
| 1056 if (!isatty (fileno (stdout))) | |
| 1057 setmode (fileno (stdout), O_BINARY); | |
| 442 | 1058 #endif /* WIN32_NATIVE */ |
| 428 | 1059 } |
| 1060 else | |
| 1061 tagf = fopen (tagfile, append_to_tagfile ? "a" : "w"); | |
| 1062 if (tagf == NULL) | |
| 1063 pfatal (tagfile); | |
| 1064 } | |
| 1065 | |
| 1066 /* | |
| 1067 * Loop through files finding functions. | |
| 1068 */ | |
| 1069 for (i = 0; i < current_arg; ++i) | |
| 1070 { | |
| 1071 switch (argbuffer[i].arg_type) | |
| 1072 { | |
| 1073 case at_language: | |
| 1074 forced_lang = argbuffer[i].lang; | |
| 1075 break; | |
| 1076 #ifdef ETAGS_REGEXPS | |
| 1077 case at_regexp: | |
| 1078 analyse_regex (argbuffer[i].what); | |
| 1079 break; | |
| 1080 #endif | |
| 1081 case at_filename: | |
| 1082 #ifdef VMS | |
| 1083 while ((this_file = gfnames (argbuffer[i].what, &got_err)) != NULL) | |
| 1084 { | |
| 1085 if (got_err) | |
| 1086 { | |
| 1087 error ("can't find file %s\n", this_file); | |
| 1088 argc--, argv++; | |
| 1089 } | |
| 1090 else | |
| 1091 { | |
| 1092 this_file = massage_name (this_file); | |
| 1093 } | |
| 1094 #else | |
| 1095 this_file = argbuffer[i].what; | |
| 1096 #endif | |
| 1097 #ifdef OO_BROWSER | |
| 1098 oo_browser_clear_all_globals(); | |
| 1099 #endif | |
| 1100 /* Input file named "-" means read file names from stdin | |
| 1101 (one per line) and use them. */ | |
| 1102 if (streq (this_file, "-")) | |
| 1103 while (readline_internal (&filename_lb, stdin) > 0) | |
| 1104 #ifdef OO_BROWSER | |
| 1105 { | |
| 1106 oo_browser_clear_some_globals(); | |
| 1107 #endif | |
| 1108 process_file (filename_lb.buffer); | |
| 1109 #ifdef OO_BROWSER | |
| 1110 } | |
| 1111 #endif | |
| 1112 else | |
| 1113 process_file (this_file); | |
| 1114 #ifdef VMS | |
| 1115 } | |
| 1116 #endif | |
| 1117 break; | |
| 1118 } | |
| 1119 } | |
| 1120 | |
| 1121 #ifdef ETAGS_REGEXPS | |
| 1122 free_patterns (); | |
| 1123 #endif /* ETAGS_REGEXPS */ | |
| 1124 | |
| 1125 if (!CTAGS) | |
| 1126 { | |
| 1127 while (nincluded_files-- > 0) | |
| 1128 fprintf (tagf, "\f\n%s,include\n", *included_files++); | |
| 1129 | |
| 1130 fclose (tagf); | |
| 1131 exit (GOOD); | |
| 1132 } | |
| 1133 | |
| 1134 /* If CTAGS, we are here. process_file did not write the tags yet, | |
| 1135 because we want them ordered. Let's do it now. */ | |
| 1136 if (cxref_style) | |
| 1137 { | |
| 1138 put_entries (head); | |
| 1139 exit (GOOD); | |
| 1140 } | |
| 1141 | |
| 1142 if (update) | |
| 1143 { | |
| 1144 char cmd[BUFSIZ]; | |
| 1145 for (i = 0; i < current_arg; ++i) | |
| 1146 { | |
| 1147 if (argbuffer[i].arg_type != at_filename) | |
| 1148 continue; | |
| 1149 sprintf (cmd, | |
| 1150 "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS", | |
| 1151 tagfile, argbuffer[i].what, tagfile); | |
| 1152 if (system (cmd) != GOOD) | |
| 1153 fatal ("failed to execute shell command", (char *)NULL); | |
| 1154 } | |
| 1155 append_to_tagfile = TRUE; | |
| 1156 } | |
| 1157 | |
| 1158 tagf = fopen (tagfile, append_to_tagfile ? "a" : "w"); | |
| 1159 if (tagf == NULL) | |
| 1160 pfatal (tagfile); | |
| 1161 put_entries (head); | |
| 1162 fclose (tagf); | |
| 1163 | |
| 1164 if (update) | |
| 1165 { | |
| 1166 char cmd[BUFSIZ]; | |
| 1167 sprintf (cmd, "sort %s -o %s", tagfile, tagfile); | |
| 1168 exit (system (cmd)); | |
| 1169 } | |
| 1170 return GOOD; | |
| 1171 } | |
| 1172 | |
| 1173 | |
| 1174 /* | |
| 1175 * Return a language given the name. | |
| 1176 */ | |
| 1177 language * | |
| 1178 get_language_from_name (name) | |
| 1179 char *name; | |
| 1180 { | |
| 1181 language *lang; | |
| 1182 | |
| 1183 if (name == NULL) | |
| 1184 error ("empty language name", (char *)NULL); | |
| 1185 else | |
| 1186 { | |
| 1187 for (lang = lang_names; lang->name != NULL; lang++) | |
| 1188 if (streq (name, lang->name)) | |
| 1189 return lang; | |
| 1190 error ("unknown language \"%s\"", name); | |
| 1191 } | |
| 1192 | |
| 1193 return NULL; | |
| 1194 } | |
| 1195 | |
| 1196 | |
| 1197 /* | |
| 1198 * Return a language given the interpreter name. | |
| 1199 */ | |
| 1200 language * | |
| 1201 get_language_from_interpreter (interpreter) | |
| 1202 char *interpreter; | |
| 1203 { | |
| 1204 language *lang; | |
| 1205 char **iname; | |
| 1206 | |
| 1207 if (interpreter == NULL) | |
| 1208 return NULL; | |
| 1209 for (lang = lang_names; lang->name != NULL; lang++) | |
| 1210 if (lang->interpreters != NULL) | |
| 1211 for (iname = lang->interpreters; *iname != NULL; iname++) | |
| 1212 if (streq (*iname, interpreter)) | |
| 1213 return lang; | |
| 1214 | |
| 1215 return NULL; | |
| 1216 } | |
| 1217 | |
| 1218 | |
| 1219 | |
| 1220 /* | |
| 1221 * Return a language given the file suffix. | |
| 1222 */ | |
| 1223 language * | |
| 1224 get_language_from_suffix (suffix) | |
| 1225 char *suffix; | |
| 1226 { | |
| 1227 language *lang; | |
| 1228 char **ext; | |
| 1229 | |
| 1230 if (suffix == NULL) | |
| 1231 return NULL; | |
| 1232 for (lang = lang_names; lang->name != NULL; lang++) | |
| 1233 if (lang->suffixes != NULL) | |
| 1234 for (ext = lang->suffixes; *ext != NULL; ext++) | |
| 1235 if (streq (*ext, suffix)) | |
| 1236 return lang; | |
| 1237 | |
| 1238 return NULL; | |
| 1239 } | |
| 1240 | |
| 1241 | |
| 1242 /* | |
| 1243 * This routine is called on each file argument. | |
| 1244 */ | |
| 1245 void | |
| 1246 process_file (file) | |
| 1247 char *file; | |
| 1248 { | |
| 1249 struct stat stat_buf; | |
| 1250 FILE *inf; | |
| 1251 | |
| 1252 canonicalize_filename (file); | |
| 1253 if (stat (file, &stat_buf) == 0 && !S_ISREG (stat_buf.st_mode)) | |
| 1254 { | |
| 1255 error ("skipping %s: it is not a regular file.", file); | |
| 1256 return; | |
| 1257 } | |
| 1258 if (streq (file, tagfile) && !streq (tagfile, "-")) | |
| 1259 { | |
| 1260 error ("skipping inclusion of %s in self.", file); | |
| 1261 return; | |
| 1262 } | |
| 1263 inf = fopen (file, "r"); | |
| 1264 if (inf == NULL) | |
| 1265 { | |
| 1266 perror (file); | |
| 1267 return; | |
| 1268 } | |
| 1269 | |
| 1270 find_entries (file, inf); | |
| 1271 | |
| 1272 if (!CTAGS) | |
| 1273 { | |
| 1274 char *filename; | |
| 1275 | |
| 1276 if (filename_is_absolute (file)) | |
| 1277 { | |
| 1278 /* file is an absolute file name. Canonicalise it. */ | |
| 1279 filename = absolute_filename (file, cwd); | |
| 1280 } | |
| 1281 else | |
| 1282 { | |
| 1283 /* file is a file name relative to cwd. Make it relative | |
| 1284 to the directory of the tags file. */ | |
| 1285 filename = relative_filename (file, tagfiledir); | |
| 1286 } | |
| 1287 #ifdef OO_BROWSER | |
| 1288 if (oo_browser_format) | |
| 1289 fprintf (tagf, "\f\n%s\n", filename); | |
| 1290 else | |
| 1291 #endif | |
| 1292 fprintf (tagf, "\f\n%s,%d\n", filename, total_size_of_entries (head)); | |
| 1293 free (filename); | |
| 1294 put_entries (head); | |
| 1295 free_tree (head); | |
| 1296 head = NULL; | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 /* | |
| 1301 * This routine sets up the boolean pseudo-functions which work | |
| 1302 * by setting boolean flags dependent upon the corresponding character. | |
| 1303 * Every char which is NOT in that string is not a white char. Therefore, | |
| 1304 * all of the array "_wht" is set to FALSE, and then the elements | |
| 1305 * subscripted by the chars in "white" are set to TRUE. Thus "_wht" | |
| 1306 * of a char is TRUE if it is the string "white", else FALSE. | |
| 1307 */ | |
| 1308 void | |
| 1309 init () | |
| 1310 { | |
| 1311 register char *sp; | |
| 1312 register int i; | |
| 1313 | |
| 1314 for (i = 0; i < CHARS; i++) | |
| 1315 iswhite(i) = notinname(i) = begtoken(i) = intoken(i) = endtoken(i) = FALSE; | |
| 1316 for (sp = white; *sp != '\0'; sp++) iswhite (*sp) = TRUE; | |
| 1317 for (sp = nonam; *sp != '\0'; sp++) notinname (*sp) = TRUE; | |
| 1318 for (sp = begtk; *sp != '\0'; sp++) begtoken (*sp) = TRUE; | |
| 1319 for (sp = midtk; *sp != '\0'; sp++) intoken (*sp) = TRUE; | |
| 1320 for (sp = endtk; *sp != '\0'; sp++) endtoken (*sp) = TRUE; | |
| 1321 iswhite('\0') = iswhite('\n'); | |
| 1322 notinname('\0') = notinname('\n'); | |
| 1323 begtoken('\0') = begtoken('\n'); | |
| 1324 intoken('\0') = intoken('\n'); | |
| 1325 endtoken('\0') = endtoken('\n'); | |
| 1326 } | |
| 1327 | |
| 1328 /* | |
| 1329 * This routine opens the specified file and calls the function | |
| 1330 * which finds the function and type definitions. | |
| 1331 */ | |
| 1332 node *last_node = NULL; | |
| 1333 | |
| 1334 void | |
| 1335 find_entries (file, inf) | |
| 1336 char *file; | |
| 1337 FILE *inf; | |
| 1338 { | |
| 1339 char *cp; | |
| 1340 language *lang; | |
| 1341 node *old_last_node; | |
| 1342 | |
| 1343 curfile = savestr (file); | |
| 1344 | |
| 1345 /* If user specified a language, use it. */ | |
| 1346 lang = forced_lang; | |
| 1347 if (lang != NULL && lang->function != NULL) | |
| 1348 { | |
| 1349 curlang = lang; | |
| 1350 lang->function (inf); | |
| 1351 free (curfile); | |
| 1352 fclose (inf); | |
| 1353 return; | |
| 1354 } | |
| 1355 | |
| 1356 cp = etags_strrchr (file, '.'); | |
| 1357 if (cp != NULL) | |
| 1358 { | |
| 1359 cp += 1; | |
| 1360 lang = get_language_from_suffix (cp); | |
| 1361 if (lang != NULL && lang->function != NULL) | |
| 1362 { | |
| 1363 curlang = lang; | |
| 1364 lang->function (inf); | |
| 1365 free (curfile); | |
| 1366 fclose (inf); | |
| 1367 return; | |
| 1368 } | |
| 1369 } | |
| 1370 | |
| 1371 /* Look for sharp-bang as the first two characters. */ | |
| 1372 if (readline_internal (&lb, inf) > 0 | |
| 1373 && lb.len >= 2 | |
| 1374 && lb.buffer[0] == '#' | |
| 1375 && lb.buffer[1] == '!') | |
| 1376 { | |
| 1377 char *lp; | |
| 1378 | |
| 1379 /* Set lp to point at the first char after the last slash in the | |
| 1380 line or, if no slashes, at the first nonblank. Then set cp to | |
| 1381 the first successive blank and terminate the string. */ | |
| 1382 lp = etags_strrchr (lb.buffer+2, '/'); | |
| 1383 if (lp != NULL) | |
| 1384 lp += 1; | |
| 1385 else | |
| 1386 lp = skip_spaces (lb.buffer + 2); | |
| 1387 cp = skip_non_spaces (lp); | |
| 1388 *cp = '\0'; | |
| 1389 | |
| 1390 if (strlen (lp) > 0) | |
| 1391 { | |
| 1392 lang = get_language_from_interpreter (lp); | |
| 1393 if (lang != NULL && lang->function != NULL) | |
| 1394 { | |
| 1395 curlang = lang; | |
| 1396 lang->function (inf); | |
| 1397 fclose (inf); | |
| 1398 free (curfile); | |
| 1399 return; | |
| 1400 } | |
| 1401 } | |
| 1402 } | |
| 1403 rewind (inf); | |
| 1404 | |
| 1405 /* Try Fortran. */ | |
| 1406 old_last_node = last_node; | |
| 1407 curlang = get_language_from_name ("fortran"); | |
| 1408 Fortran_functions (inf); | |
| 1409 | |
| 1410 /* No Fortran entries found. Try C. */ | |
| 1411 if (old_last_node == last_node) | |
| 1412 { | |
| 1413 rewind (inf); | |
| 1414 curlang = get_language_from_name (cplusplus ? "c++" : "c"); | |
| 1415 default_C_entries (inf); | |
| 1416 } | |
| 1417 free (curfile); | |
| 1418 fclose (inf); | |
| 1419 return; | |
| 1420 } | |
| 1421 | |
| 1422 /* Record a tag. */ | |
| 1423 void | |
| 1424 pfnote (name, is_func, linestart, linelen, lno, cno) | |
| 1425 char *name; /* tag name, or NULL if unnamed */ | |
| 1426 bool is_func; /* tag is a function */ | |
| 1427 char *linestart; /* start of the line where tag is */ | |
| 1428 int linelen; /* length of the line where tag is */ | |
| 1429 int lno; /* line number */ | |
| 1430 long cno; /* character number */ | |
| 1431 { | |
| 1432 register node *np; | |
| 1433 | |
| 1434 if (CTAGS && name == NULL) | |
| 1435 return; | |
| 1436 | |
| 1437 np = xnew (1, node); | |
| 1438 | |
| 1439 /* If ctags mode, change name "main" to M<thisfilename>. */ | |
| 1440 if (CTAGS && !cxref_style && streq (name, "main")) | |
| 1441 { | |
| 1442 register char *fp = etags_strrchr (curfile, '/'); | |
| 1443 np->name = concat ("M", fp == 0 ? curfile : fp + 1, ""); | |
| 1444 fp = etags_strrchr (np->name, '.'); | |
| 1445 if (fp && fp[1] != '\0' && fp[2] == '\0') | |
| 1446 fp[0] = 0; | |
| 1447 } | |
| 1448 else | |
| 1449 np->name = name; | |
| 1450 np->been_warned = FALSE; | |
| 1451 np->file = curfile; | |
| 1452 np->is_func = is_func; | |
| 1453 np->lno = lno; | |
| 1454 /* Our char numbers are 0-base, because of C language tradition? | |
| 1455 ctags compatibility? old versions compatibility? I don't know. | |
| 1456 Anyway, since emacs's are 1-base we expect etags.el to take care | |
| 1457 of the difference. If we wanted to have 1-based numbers, we would | |
| 1458 uncomment the +1 below. */ | |
| 1459 np->cno = cno /* + 1 */ ; | |
| 1460 np->left = np->right = NULL; | |
| 1461 if (CTAGS && !cxref_style) | |
| 1462 { | |
| 1463 if (strlen (linestart) < 50) | |
| 1464 np->pat = concat (linestart, "$", ""); | |
| 1465 else | |
| 1466 np->pat = savenstr (linestart, 50); | |
| 1467 } | |
| 1468 else | |
| 1469 np->pat = savenstr (linestart, linelen); | |
| 1470 | |
| 1471 #ifdef OO_BROWSER | |
| 1472 if (oo_browser_format) | |
| 1473 np->construct = oo_browser_construct; | |
| 1474 oo_browser_construct = C_NULL; | |
| 1475 oo_browser_check_and_clear_structtype(); | |
| 1476 #endif | |
| 1477 | |
| 1478 add_node (np, &head); | |
| 1479 } | |
| 1480 | |
| 1481 /* Date: Wed, 22 Jan 1997 02:56:31 -0500 [last amended 18 Sep 1997] | |
| 1482 * From: Sam Kendall <kendall@mv.mv.com> | |
| 1483 * Subject: Proposal for firming up the TAGS format specification | |
| 1484 * To: F.Potorti@cnuce.cnr.it | |
| 1485 * | |
| 1486 * pfnote should emit the optimized form [unnamed tag] only if: | |
| 1487 * 1. name does not contain any of the characters " \t\r\n(),;"; | |
| 1488 * 2. linestart contains name as either a rightmost, or rightmost but | |
| 1489 * one character, substring; | |
| 1490 * 3. the character, if any, immediately before name in linestart must | |
| 1491 * be one of the characters " \t(),;"; | |
| 1492 * 4. the character, if any, immediately after name in linestart must | |
| 1493 * also be one of the characters " \t(),;". | |
| 1494 * | |
| 1495 * The real implementation uses the notinname() macro, which recognises | |
| 1496 * characters slightly different form " \t\r\n(),;". See the variable | |
| 1497 * `nonam'. | |
| 1498 */ | |
| 1499 #define traditional_tag_style TRUE | |
| 1500 void | |
| 1501 new_pfnote (name, namelen, is_func, linestart, linelen, lno, cno) | |
| 1502 char *name; /* tag name, or NULL if unnamed */ | |
| 1503 int namelen; /* tag length */ | |
| 1504 bool is_func; /* tag is a function */ | |
| 1505 char *linestart; /* start of the line where tag is */ | |
| 1506 int linelen; /* length of the line where tag is */ | |
| 1507 int lno; /* line number */ | |
| 1508 long cno; /* character number */ | |
| 1509 { | |
| 1510 register char *cp; | |
| 1511 bool named; | |
| 1512 | |
| 1513 named = TRUE; | |
| 1514 if (!CTAGS) | |
| 1515 { | |
| 1516 for (cp = name; !notinname (*cp); cp++) | |
| 1517 continue; | |
| 1518 if (*cp == '\0') /* rule #1 */ | |
| 1519 { | |
| 1520 cp = linestart + linelen - namelen; | |
| 1521 if (notinname (linestart[linelen-1])) | |
| 1522 cp -= 1; /* rule #4 */ | |
| 1523 #ifdef OO_BROWSER | |
| 1524 if (!oo_browser_format | |
| 1525 && cp >= linestart /* rule #2 */ | |
| 1526 #else | |
| 1527 if (cp >= linestart /* rule #2 */ | |
| 1528 #endif | |
| 1529 && (cp == linestart | |
| 1530 || notinname (cp[-1])) /* rule #3 */ | |
| 1531 && strneq (name, cp, namelen)) /* rule #2 */ | |
| 1532 named = FALSE; /* use unnamed tag */ | |
| 1533 } | |
| 1534 } | |
| 1535 | |
| 1536 if (named) | |
| 1537 name = savenstr (name, namelen); | |
| 1538 else | |
| 1539 name = NULL; | |
| 1540 pfnote (name, is_func, linestart, linelen, lno, cno); | |
| 1541 } | |
| 1542 | |
| 1543 /* | |
| 1544 * free_tree () | |
| 1545 * recurse on left children, iterate on right children. | |
| 1546 */ | |
| 1547 void | |
| 1548 free_tree (np) | |
| 1549 register node *np; | |
| 1550 { | |
| 1551 while (np) | |
| 1552 { | |
| 1553 register node *node_right = np->right; | |
| 1554 free_tree (np->left); | |
| 1555 if (np->name != NULL) | |
| 1556 free (np->name); | |
| 1557 free (np->pat); | |
| 1558 free (np); | |
| 1559 np = node_right; | |
| 1560 } | |
| 1561 } | |
| 1562 | |
| 1563 /* | |
| 1564 * add_node () | |
| 1565 * Adds a node to the tree of nodes. In etags mode, we don't keep | |
| 1566 * it sorted; we just keep a linear list. In ctags mode, maintain | |
| 1567 * an ordered tree, with no attempt at balancing. | |
| 1568 * | |
| 1569 * add_node is the only function allowed to add nodes, so it can | |
| 1570 * maintain state. | |
| 1571 */ | |
| 1572 void | |
| 1573 add_node (np, cur_node_p) | |
| 1574 node *np, **cur_node_p; | |
| 1575 { | |
| 1576 register int dif; | |
| 1577 register node *cur_node = *cur_node_p; | |
| 1578 | |
| 1579 if (cur_node == NULL) | |
| 1580 { | |
| 1581 *cur_node_p = np; | |
| 1582 last_node = np; | |
| 1583 return; | |
| 1584 } | |
| 1585 | |
| 1586 if (!CTAGS) | |
| 1587 { | |
| 1588 /* Etags Mode */ | |
| 1589 if (last_node == NULL) | |
| 1590 fatal ("internal error in add_node", (char *)NULL); | |
| 1591 last_node->right = np; | |
| 1592 last_node = np; | |
| 1593 } | |
| 1594 else | |
| 1595 { | |
| 1596 /* Ctags Mode */ | |
| 1597 dif = strcmp (np->name, cur_node->name); | |
| 1598 | |
| 1599 /* | |
| 1600 * If this tag name matches an existing one, then | |
| 1601 * do not add the node, but maybe print a warning. | |
| 1602 */ | |
| 1603 if (!dif) | |
| 1604 { | |
| 1605 if (streq (np->file, cur_node->file)) | |
| 1606 { | |
| 1607 if (!no_warnings) | |
| 1608 { | |
| 1609 fprintf (stderr, "Duplicate entry in file %s, line %d: %s\n", | |
| 1610 np->file, lineno, np->name); | |
| 1611 fprintf (stderr, "Second entry ignored\n"); | |
| 1612 } | |
| 1613 } | |
| 1614 else if (!cur_node->been_warned && !no_warnings) | |
| 1615 { | |
| 1616 fprintf | |
| 1617 (stderr, | |
| 1618 "Duplicate entry in files %s and %s: %s (Warning only)\n", | |
| 1619 np->file, cur_node->file, np->name); | |
| 1620 cur_node->been_warned = TRUE; | |
| 1621 } | |
| 1622 return; | |
| 1623 } | |
| 1624 | |
| 1625 /* Actually add the node */ | |
| 1626 add_node (np, dif < 0 ? &cur_node->left : &cur_node->right); | |
| 1627 } | |
| 1628 } | |
| 1629 | |
| 1630 #ifdef OO_BROWSER | |
| 1631 /* Default class name for the current OO-Browser tag. */ | |
| 1632 static char *oo_browser_class; | |
| 1633 /* Prefix character to use in OO-Browser listings for the current tag. */ | |
| 1634 static char oo_browser_prefix; | |
| 1635 #endif | |
| 1636 | |
| 1637 void | |
| 438 | 1638 put_entries (node *np) |
| 428 | 1639 { |
| 1640 register char *sp; | |
| 1641 | |
| 1642 if (np == NULL) | |
| 1643 return; | |
| 1644 | |
| 1645 /* Output subentries that precede this one */ | |
| 1646 put_entries (np->left); | |
| 1647 | |
| 1648 /* Output this entry */ | |
| 1649 | |
| 1650 if (!CTAGS) | |
| 1651 { | |
| 1652 #ifdef OO_BROWSER | |
| 1653 if (oo_browser_format) | |
| 1654 { | |
| 1655 /* Omit C++ `class' and `method' entries as well as Objective-C | |
| 1656 entries from this OO-Browser tags file since the browser handles | |
| 1657 them independently of this file. Omit `extern' variable declarations | |
| 1658 as they are unused by the OO-Browser. */ | |
| 1659 if (np->construct != C_CLASS | |
| 1660 && np->construct != C_METHOD | |
| 1661 && np->construct != C_EXTERN | |
| 1662 && np->construct != C_OBJC) | |
| 1663 { | |
| 1664 oo_browser_class = oo_browser_default_classes[np->construct]; | |
| 1665 switch (np->construct) | |
| 1666 { | |
| 1667 case C_CONSTANT: | |
| 1668 case C_ENUMERATION: | |
| 1669 case C_ENUM_LABEL: | |
| 1670 case C_STRUCTURE: | |
| 1671 case C_TYPE: | |
| 1672 case C_UNION: | |
| 1673 case C_VARIABLE: | |
| 1674 oo_browser_prefix = '='; | |
| 1675 break; | |
| 1676 case C_FUNCTION: | |
| 1677 case C_MACRO: | |
| 1678 oo_browser_prefix = '-'; | |
| 1679 break; | |
| 1680 } | |
| 1681 if (np->name != NULL) | |
| 1682 fprintf (tagf, "%s@%c %s@%s\n", | |
| 1683 oo_browser_class, oo_browser_prefix, | |
| 1684 np->name, np->pat); | |
| 1685 else | |
| 1686 fprintf (tagf, "%s@%c ???@%s\n", | |
| 1687 oo_browser_class, oo_browser_prefix, np->pat); | |
| 1688 } | |
| 1689 } | |
| 1690 else | |
| 1691 { | |
| 1692 #endif | |
| 1693 if (np->name != NULL) | |
| 1694 fprintf (tagf, "%s\177%s\001%d,%ld\n", | |
| 1695 np->pat, np->name, np->lno, np->cno); | |
| 1696 else | |
| 1697 fprintf (tagf, "%s\177%d,%ld\n", | |
| 1698 np->pat, np->lno, np->cno); | |
| 1699 #ifdef OO_BROWSER | |
| 1700 } | |
| 1701 #endif | |
| 1702 } | |
| 1703 else | |
| 1704 { | |
| 1705 if (np->name == NULL) | |
| 1706 error ("internal error: NULL name in ctags mode.", (char *)NULL); | |
| 1707 | |
| 1708 if (cxref_style) | |
| 1709 { | |
| 1710 if (vgrind_style) | |
| 1711 fprintf (stdout, "%s %s %d\n", | |
| 1712 np->name, np->file, (np->lno + 63) / 64); | |
| 1713 else | |
| 1714 fprintf (stdout, "%-16s %3d %-16s %s\n", | |
| 1715 np->name, np->lno, np->file, np->pat); | |
| 1716 } | |
| 1717 else | |
| 1718 { | |
| 1719 fprintf (tagf, "%s\t%s\t", np->name, np->file); | |
| 1720 | |
| 1721 if (np->is_func) | |
| 1722 { /* a function */ | |
| 1723 putc (searchar, tagf); | |
| 1724 putc ('^', tagf); | |
| 1725 | |
| 1726 for (sp = np->pat; *sp; sp++) | |
| 1727 { | |
| 1728 if (*sp == '\\' || *sp == searchar) | |
| 1729 putc ('\\', tagf); | |
| 1730 putc (*sp, tagf); | |
| 1731 } | |
| 1732 putc (searchar, tagf); | |
| 1733 } | |
| 1734 else | |
| 1735 { /* a typedef; text pattern inadequate */ | |
| 1736 fprintf (tagf, "%d", np->lno); | |
| 1737 } | |
| 1738 putc ('\n', tagf); | |
| 1739 } | |
| 1740 } | |
| 1741 | |
| 1742 /* Output subentries that follow this one */ | |
| 1743 put_entries (np->right); | |
| 1744 } | |
| 1745 | |
| 1746 /* Length of a number's decimal representation. */ | |
| 1747 int number_len PP ((long num)); | |
| 1748 int | |
| 1749 number_len (num) | |
| 1750 long num; | |
| 1751 { | |
| 1752 int len = 1; | |
| 1753 while ((num /= 10) > 0) | |
| 1754 len += 1; | |
| 1755 return len; | |
| 1756 } | |
| 1757 | |
| 1758 /* | |
| 1759 * Return total number of characters that put_entries will output for | |
| 1760 * the nodes in the subtree of the specified node. Works only if | |
| 1761 * we are not ctags, but called only in that case. This count | |
| 1762 * is irrelevant with the new tags.el, but is still supplied for | |
| 1763 * backward compatibility. | |
| 1764 */ | |
| 1765 int | |
| 1766 total_size_of_entries (np) | |
| 1767 register node *np; | |
| 1768 { | |
| 1769 register int total; | |
| 1770 | |
| 1771 if (np == NULL) | |
| 1772 return 0; | |
| 1773 | |
| 1774 for (total = 0; np != NULL; np = np->right) | |
| 1775 { | |
| 1776 /* Count left subentries. */ | |
| 1777 total += total_size_of_entries (np->left); | |
| 1778 | |
| 1779 /* Count this entry */ | |
| 1780 total += strlen (np->pat) + 1; | |
| 1781 total += number_len ((long) np->lno) + 1 + number_len (np->cno) + 1; | |
| 1782 if (np->name != NULL) | |
| 1783 total += 1 + strlen (np->name); /* \001name */ | |
| 1784 } | |
| 1785 | |
| 1786 return total; | |
| 1787 } | |
| 1788 | |
| 1789 /* | |
| 1790 * The C symbol tables. | |
| 1791 */ | |
| 1792 enum sym_type | |
| 1793 { | |
| 1794 st_none, | |
| 1795 st_C_objprot, st_C_objimpl, st_C_objend, | |
| 1796 st_C_gnumacro, | |
| 1797 st_C_ignore, | |
| 1798 st_C_javastruct, | |
| 1799 st_C_struct, st_C_enum, st_C_define, st_C_typedef, st_C_typespec, | |
| 1800 st_C_const | |
| 1801 #ifdef OO_BROWSER | |
| 1802 , st_C_union, st_C_class, st_C_extern, st_C_inline | |
| 1803 #endif | |
| 1804 }; | |
| 1805 | |
| 1806 /* Feed stuff between (but not including) %[ and %] lines to: | |
| 1807 gperf -c -k 1,3 -o -p -r -t | |
| 1808 %[ | |
| 1809 struct C_stab_entry { char *name; int c_ext; enum sym_type type; } | |
| 1810 %% | |
| 1811 @interface, 0, st_C_objprot | |
| 1812 @protocol, 0, st_C_objprot | |
| 1813 @implementation,0, st_C_objimpl | |
| 1814 @end, 0, st_C_objend | |
| 1815 import, C_JAVA, st_C_ignore | |
| 1816 package, C_JAVA, st_C_ignore | |
| 1817 friend, C_PLPL, st_C_ignore | |
| 1818 extends, C_JAVA, st_C_javastruct | |
| 1819 implements, C_JAVA, st_C_javastruct | |
| 1820 interface, C_JAVA, st_C_struct | |
| 1821 class, C_PLPL, st_C_class | |
| 1822 namespace, C_PLPL, st_C_struct | |
| 1823 domain, C_STAR, st_C_struct | |
| 1824 union, 0, st_C_union | |
| 1825 struct, 0, st_C_struct | |
| 1826 enum, 0, st_C_enum | |
| 1827 typedef, 0, st_C_typedef | |
| 1828 define, 0, st_C_define | |
| 1829 inline, 0, st_C_inline | |
| 1830 bool, C_PLPL, st_C_typespec | |
| 1831 long, 0, st_C_typespec | |
| 1832 short, 0, st_C_typespec | |
| 1833 int, 0, st_C_typespec | |
| 1834 char, 0, st_C_typespec | |
| 1835 float, 0, st_C_typespec | |
| 1836 double, 0, st_C_typespec | |
| 1837 signed, 0, st_C_typespec | |
| 1838 unsigned, 0, st_C_typespec | |
| 1839 auto, 0, st_C_typespec | |
| 1840 void, 0, st_C_typespec | |
| 1841 extern, 0, st_C_extern | |
| 1842 static, 0, st_C_typespec | |
| 1843 const, 0, st_C_const | |
| 1844 volatile, 0, st_C_typespec | |
| 1845 explicit, C_PLPL, st_C_typespec | |
| 1846 mutable, C_PLPL, st_C_typespec | |
| 1847 typename, C_PLPL, st_C_typespec | |
| 1848 # DEFUN used in emacs, the next three used in glibc (SYSCALL only for mach). | |
| 1849 DEFUN, 0, st_C_gnumacro | |
| 1850 SYSCALL, 0, st_C_gnumacro | |
| 1851 ENTRY, 0, st_C_gnumacro | |
| 1852 PSEUDO, 0, st_C_gnumacro | |
| 1853 # These are defined inside C functions, so currently they are not met. | |
| 1854 # EXFUN used in glibc, DEFVAR_* in emacs. | |
| 1855 #EXFUN, 0, st_C_gnumacro | |
| 1856 #DEFVAR_, 0, st_C_gnumacro | |
| 1857 %] | |
| 1858 and replace lines between %< and %> with its output. */ | |
| 1859 /*%<*/ | |
| 1860 /* C code produced by gperf version 2.5 (GNU C++ version) */ | |
| 1861 /* Command-line: gperf -c -k 1,3 -o -p -r -t */ | |
| 1862 struct C_stab_entry { char *name; int c_ext; enum sym_type type; }; | |
| 1863 | |
| 1864 #define TOTAL_KEYWORDS 41 | |
| 1865 #define MIN_WORD_LENGTH 3 | |
| 1866 #define MAX_WORD_LENGTH 15 | |
| 1867 #define MIN_HASH_VALUE 13 | |
| 1868 #define MAX_HASH_VALUE 129 | |
| 1869 /* maximum key range = 117, duplicates = 0 */ | |
| 1870 | |
| 1871 static unsigned int | |
| 438 | 1872 hash (char *str, unsigned int len) |
| 428 | 1873 { |
| 1874 static unsigned char asso_values[] = | |
| 1875 { | |
| 1876 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1877 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1878 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1879 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1880 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1881 130, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1882 130, 130, 130, 130, 13, 130, 130, 130, 33, 32, | |
| 1883 47, 130, 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1884 5, 130, 130, 20, 32, 130, 130, 130, 130, 130, | |
| 1885 130, 130, 130, 130, 130, 130, 130, 47, 55, 8, | |
| 1886 15, 33, 61, 38, 130, 60, 130, 130, 2, 9, | |
| 1887 10, 62, 59, 130, 28, 27, 50, 19, 3, 130, | |
| 1888 130, 130, 130, 130, 130, 130, 130, 130, | |
| 1889 }; | |
| 438 | 1890 return len + |
| 1891 asso_values[(unsigned char) str[2]] + | |
| 1892 asso_values[(unsigned char) str[0]]; | |
| 428 | 1893 } |
| 1894 | |
| 438 | 1895 static struct C_stab_entry * |
| 1896 in_word_set (char *str, unsigned int len) | |
| 428 | 1897 { |
| 1898 static struct C_stab_entry wordlist[] = | |
| 1899 { | |
| 1900 {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, | |
| 1901 {"",}, {"",}, {"",}, {"",}, | |
| 1902 {"volatile", 0, st_C_typespec}, | |
| 1903 {"",}, {"",}, | |
| 1904 {"long", 0, st_C_typespec}, | |
| 1905 {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, | |
| 1906 {"const", 0, st_C_const}, | |
| 1907 {"",}, {"",}, {"",}, | |
| 1908 {"@end", 0, st_C_objend}, | |
| 1909 {"namespace", C_PLPL, st_C_struct}, | |
| 1910 {"",}, | |
| 1911 {"domain", C_STAR, st_C_struct}, | |
| 1912 {"",}, {"",}, | |
| 1913 {"@interface", 0, st_C_objprot}, | |
| 1914 {"",}, {"",}, {"",}, | |
| 1915 {"@implementation", 0, st_C_objimpl}, | |
| 1916 {"",}, {"",}, | |
| 1917 {"double", 0, st_C_typespec}, | |
| 1918 {"",}, {"",}, | |
| 1919 {"PSEUDO", 0, st_C_gnumacro}, | |
| 1920 {"",}, {"",}, {"",}, | |
| 1921 {"SYSCALL", 0, st_C_gnumacro}, | |
| 1922 {"",}, {"",}, | |
| 1923 {"@protocol", 0, st_C_objprot}, | |
| 1924 {"",}, {"",}, {"",}, | |
| 1925 {"unsigned", 0, st_C_typespec}, | |
| 1926 {"",}, | |
| 1927 {"enum", 0, st_C_enum}, | |
| 1928 {"",}, {"",}, | |
| 1929 {"char", 0, st_C_typespec}, | |
| 1930 {"class", C_PLPL, st_C_class}, | |
| 1931 {"struct", 0, st_C_struct}, | |
| 1932 {"",}, {"",}, {"",}, {"",}, | |
| 1933 {"mutable", C_PLPL, st_C_typespec}, | |
| 1934 {"void", 0, st_C_typespec}, | |
| 1935 {"inline", 0, st_C_inline}, | |
| 1936 {"ENTRY", 0, st_C_gnumacro}, | |
| 1937 {"",}, | |
| 1938 {"signed", 0, st_C_typespec}, | |
| 1939 {"",}, {"",}, | |
| 1940 {"package", C_JAVA, st_C_ignore}, | |
| 1941 {"",}, {"",}, {"",}, {"",}, {"",}, | |
| 1942 {"static", 0, st_C_typespec}, | |
| 1943 {"",}, | |
| 1944 {"define", 0, st_C_define}, | |
| 1945 {"",}, | |
| 1946 {"union", 0, st_C_union}, | |
| 1947 {"DEFUN", 0, st_C_gnumacro}, | |
| 1948 {"",}, {"",}, {"",}, | |
| 1949 {"extern", 0, st_C_extern}, | |
| 1950 {"extends", C_JAVA, st_C_javastruct}, | |
| 1951 {"",}, {"",}, {"",}, | |
| 1952 {"short", 0, st_C_typespec}, | |
| 1953 {"",}, {"",}, {"",}, {"",}, {"",}, | |
| 1954 {"explicit", C_PLPL, st_C_typespec}, | |
| 1955 {"auto", 0, st_C_typespec}, | |
| 1956 {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, | |
| 1957 {"",}, {"",}, | |
| 1958 {"int", 0, st_C_typespec}, | |
| 1959 {"",}, {"",}, | |
| 1960 {"typedef", 0, st_C_typedef}, | |
| 1961 {"typename", C_PLPL, st_C_typespec}, | |
| 1962 {"",}, | |
| 1963 {"interface", C_JAVA, st_C_struct}, | |
| 1964 {"",}, | |
| 1965 {"bool", C_PLPL, st_C_typespec}, | |
| 1966 {"",}, {"",}, {"",}, | |
| 1967 {"import", C_JAVA, st_C_ignore}, | |
| 1968 {"",}, | |
| 1969 {"friend", C_PLPL, st_C_ignore}, | |
| 1970 {"float", 0, st_C_typespec}, | |
| 1971 {"implements", C_JAVA, st_C_javastruct}, | |
| 1972 }; | |
| 1973 | |
| 1974 if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH) | |
| 1975 { | |
| 1976 register int key = hash (str, len); | |
| 1977 | |
| 1978 if (key <= MAX_HASH_VALUE && key >= 0) | |
| 1979 { | |
| 1980 register char *s = wordlist[key].name; | |
| 1981 | |
| 1982 if (*s == *str && !strncmp (str + 1, s + 1, len - 1)) | |
| 1983 return &wordlist[key]; | |
| 1984 } | |
| 1985 } | |
| 1986 return 0; | |
| 1987 } | |
| 1988 /*%>*/ | |
| 1989 | |
| 1990 enum sym_type C_symtype PP ((char *str, int len, int c_ext)); | |
| 1991 enum sym_type | |
| 1992 C_symtype (str, len, c_ext) | |
| 1993 char *str; | |
| 1994 int len; | |
| 1995 int c_ext; | |
| 1996 { | |
| 1997 register struct C_stab_entry *se = in_word_set (str, len); | |
| 1998 | |
| 1999 if (se == NULL || (se->c_ext && !(c_ext & se->c_ext))) | |
| 2000 return st_none; | |
| 2001 return se->type; | |
| 2002 } | |
| 2003 | |
| 2004 /* | |
| 2005 * C functions and variables are recognized using a simple | |
| 2006 * finite automaton. fvdef is its state variable. | |
| 2007 */ | |
| 2008 enum | |
| 2009 { | |
| 2010 fvnone, /* nothing seen */ | |
| 2011 fvnameseen, /* function or variable name seen */ | |
| 2012 fstartlist, /* func: just after open parenthesis */ | |
| 2013 finlist, /* func: in parameter list */ | |
| 2014 flistseen, /* func: after parameter list */ | |
| 2015 fignore, /* func: before open brace */ | |
| 2016 vignore /* var-like: ignore until ';' */ | |
| 2017 } fvdef; | |
| 2018 | |
| 2019 | |
| 2020 /* | |
| 2021 * typedefs are recognized using a simple finite automaton. | |
| 2022 * typdef is its state variable. | |
| 2023 */ | |
| 2024 enum | |
| 2025 { | |
| 2026 tnone, /* nothing seen */ | |
| 2027 ttypedseen, /* typedef keyword seen */ | |
| 2028 tinbody, /* inside typedef body */ | |
| 2029 tend, /* just before typedef tag */ | |
| 2030 tignore /* junk after typedef tag */ | |
| 2031 } typdef; | |
| 2032 | |
| 2033 | |
| 2034 /* | |
| 2035 * struct-like structures (enum, struct and union) are recognized | |
| 2036 * using another simple finite automaton. `structdef' is its state | |
| 2037 * variable. | |
| 2038 */ | |
| 2039 enum | |
| 2040 { | |
| 2041 snone, /* nothing seen yet */ | |
| 2042 skeyseen, /* struct-like keyword seen */ | |
| 2043 stagseen, /* struct-like tag seen */ | |
| 2044 scolonseen, /* colon seen after struct-like tag */ | |
| 2045 sinbody /* in struct body: recognize member func defs*/ | |
| 2046 } structdef; | |
| 2047 | |
| 2048 /* | |
| 2049 * When structdef is stagseen, scolonseen, or sinbody, structtag is the | |
| 2050 * struct tag, and structtype is the type of the preceding struct-like | |
| 2051 * keyword. | |
| 2052 */ | |
| 2053 char *structtag = "<uninited>"; | |
| 2054 enum sym_type structtype; | |
| 2055 | |
| 2056 #ifdef OO_BROWSER | |
| 2057 void | |
| 438 | 2058 oo_browser_check_and_clear_structtype(void) |
| 428 | 2059 { |
| 2060 /* Allow for multiple enum_label tags. */ | |
| 2061 if (structtype != st_C_enum) | |
| 2062 structtype = st_none; | |
| 2063 } | |
| 2064 #endif | |
| 2065 | |
| 2066 /* | |
| 2067 * When objdef is different from onone, objtag is the name of the class. | |
| 2068 */ | |
| 2069 char *objtag = "<uninited>"; | |
| 2070 | |
| 2071 /* | |
| 2072 * Yet another little state machine to deal with preprocessor lines. | |
| 2073 */ | |
| 2074 enum | |
| 2075 { | |
| 2076 dnone, /* nothing seen */ | |
| 2077 dsharpseen, /* '#' seen as first char on line */ | |
| 2078 ddefineseen, /* '#' and 'define' seen */ | |
| 2079 dignorerest /* ignore rest of line */ | |
| 2080 } definedef; | |
| 2081 | |
| 2082 /* | |
| 2083 * State machine for Objective C protocols and implementations. | |
| 2084 * Tom R.Hageman <tom@basil.icce.rug.nl> | |
| 2085 */ | |
| 2086 enum | |
| 2087 { | |
| 2088 onone, /* nothing seen */ | |
| 2089 oprotocol, /* @interface or @protocol seen */ | |
| 2090 oimplementation, /* @implementations seen */ | |
| 2091 otagseen, /* class name seen */ | |
| 2092 oparenseen, /* parenthesis before category seen */ | |
| 2093 ocatseen, /* category name seen */ | |
| 2094 oinbody, /* in @implementation body */ | |
| 2095 omethodsign, /* in @implementation body, after +/- */ | |
| 2096 omethodtag, /* after method name */ | |
| 2097 omethodcolon, /* after method colon */ | |
| 2098 omethodparm, /* after method parameter */ | |
| 2099 oignore /* wait for @end */ | |
| 2100 } objdef; | |
| 2101 | |
| 2102 /* | |
| 2103 * Use this structure to keep info about the token read, and how it | |
| 2104 * should be tagged. Used by the make_C_tag function to build a tag. | |
| 2105 */ | |
| 2106 typedef struct | |
| 2107 { | |
| 2108 bool valid; | |
| 2109 char *str; | |
| 2110 bool named; | |
| 2111 int linelen; | |
| 2112 int lineno; | |
| 2113 long linepos; | |
| 2114 char *buffer; | |
| 2115 } token; | |
| 2116 | |
| 2117 token tok; /* latest token read */ | |
| 2118 | |
| 2119 /* | |
| 2120 * Set this to TRUE, and the next token considered is called a function. | |
| 2121 * Used only for GNU emacs's function-defining macros. | |
| 2122 */ | |
| 2123 bool next_token_is_func; | |
| 2124 | |
| 2125 /* | |
| 2126 * TRUE in the rules part of a yacc file, FALSE outside (parse as C). | |
| 2127 */ | |
| 2128 bool yacc_rules; | |
| 2129 | |
| 2130 /* | |
| 2131 * methodlen is the length of the method name stored in token_name. | |
| 2132 */ | |
| 2133 int methodlen; | |
| 2134 | |
| 2135 #ifdef OO_BROWSER | |
| 2136 void | |
| 438 | 2137 oo_browser_clear_all_globals(void) |
| 428 | 2138 { |
| 2139 /* Initialize globals so there is no carry over between files. */ | |
| 2140 oo_browser_construct = C_NULL; | |
| 2141 fvdef = fvnone; typdef = tnone; structdef = snone; | |
| 2142 definedef = dnone; objdef = onone; | |
| 2143 structtype = st_none; | |
| 2144 next_token_is_func = yacc_rules = FALSE; | |
| 2145 } | |
| 2146 | |
| 2147 void | |
| 438 | 2148 oo_browser_clear_some_globals(void) |
| 428 | 2149 { |
| 2150 oo_browser_construct = C_NULL; | |
| 2151 structtype = st_none; | |
| 2152 } | |
| 2153 #endif | |
| 2154 | |
| 2155 /* | |
| 2156 * consider_token () | |
| 2157 * checks to see if the current token is at the start of a | |
| 2158 * function or variable, or corresponds to a typedef, or | |
| 2159 * is a struct/union/enum tag, or #define, or an enum constant. | |
| 2160 * | |
| 2161 * *IS_FUNC gets TRUE iff the token is a function or #define macro | |
| 2162 * with args. C_EXT is which language we are looking at. | |
| 2163 * | |
| 2164 * In the future we will need some way to adjust where the end of | |
| 2165 * the token is; for instance, implementing the C++ keyword | |
| 2166 * `operator' properly will adjust the end of the token to be after | |
| 2167 * whatever follows `operator'. | |
| 2168 * | |
| 2169 * Globals | |
| 2170 * fvdef IN OUT | |
| 2171 * structdef IN OUT | |
| 2172 * definedef IN OUT | |
| 2173 * typdef IN OUT | |
| 2174 * objdef IN OUT | |
| 2175 * next_token_is_func IN OUT | |
| 2176 */ | |
| 2177 bool consider_token PP ((char *str, int len, int c, int c_ext, | |
| 2178 int cblev, int parlev, bool *is_func_or_var)); | |
| 2179 bool | |
| 2180 consider_token (str, len, c, c_ext, cblev, parlev, is_func_or_var) | |
| 2181 register char *str; /* IN: token pointer */ | |
| 2182 register int len; /* IN: token length */ | |
| 2183 register int c; /* IN: first char after the token */ | |
| 2184 int c_ext; /* IN: C extensions mask */ | |
| 2185 int cblev; /* IN: curly brace level */ | |
| 2186 int parlev; /* IN: parenthesis level */ | |
| 2187 bool *is_func_or_var; /* OUT: function or variable found */ | |
| 2188 { | |
| 2189 enum sym_type toktype = C_symtype (str, len, c_ext); | |
| 2190 | |
| 2191 #ifdef OO_BROWSER | |
| 2192 switch (toktype) | |
| 2193 { | |
| 2194 case st_C_struct: | |
| 2195 set_construct(C_STRUCTURE); | |
| 2196 break; | |
| 2197 case st_C_union: | |
| 2198 set_construct(C_UNION); | |
| 2199 break; | |
| 2200 case st_C_class: | |
| 2201 set_construct(C_CLASS); | |
| 2202 break; | |
| 2203 case st_C_enum: | |
| 2204 set_construct(C_ENUMERATION); | |
| 2205 break; | |
| 2206 case st_C_typedef: | |
| 2207 set_construct(C_TYPE); | |
| 2208 break; | |
| 2209 case st_C_extern: | |
| 2210 set_construct(C_EXTERN); | |
| 2211 break; | |
| 2212 case st_C_inline: | |
| 2213 set_construct(C_FUNCTION); | |
| 2214 break; | |
| 2215 } | |
| 2216 #endif | |
| 2217 | |
| 2218 /* | |
| 2219 * Advance the definedef state machine. | |
| 2220 */ | |
| 2221 switch (definedef) | |
| 2222 { | |
| 2223 case dnone: | |
| 2224 /* We're not on a preprocessor line. */ | |
| 2225 break; | |
| 2226 case dsharpseen: | |
| 2227 if (toktype == st_C_define) | |
| 2228 { | |
| 2229 definedef = ddefineseen; | |
| 2230 } | |
| 2231 else | |
| 2232 { | |
| 2233 definedef = dignorerest; | |
| 2234 } | |
| 2235 return FALSE; | |
| 2236 case ddefineseen: | |
| 2237 /* | |
| 2238 * Make a tag for any macro, unless it is a constant | |
| 2239 * and constantypedefs is FALSE. | |
| 2240 */ | |
| 2241 definedef = dignorerest; | |
| 2242 #ifndef OO_BROWSER | |
| 2243 *is_func_or_var = (c == '('); | |
| 2244 #else | |
| 2245 { | |
| 2246 char *p = str + len * sizeof(char); | |
| 2247 | |
| 2248 if (*p == '(') | |
| 2249 /* This must be a macro since there is no | |
| 2250 whitespace between the opening parenthesis | |
| 2251 and the definition name. */ | |
| 2252 *is_func_or_var = TRUE; | |
| 2253 else | |
| 2254 { | |
| 2255 *is_func_or_var = FALSE; | |
| 2256 | |
| 2257 /* Handle possible whitespace between macro tag and opening | |
| 2258 parenthesis and ensure this is an actual macro. | |
| 2259 -- Bob Weiner, Altrasoft, 11/19/1997 */ | |
| 2260 while (*p && isspace(*p)) p++; | |
| 2261 if (*p) c = *p; | |
| 2262 | |
| 2263 /* Skip over nested parentheses. */ | |
| 2264 if (c == '(') | |
| 2265 { | |
| 2266 short depth = 1; | |
| 2267 | |
| 2268 while (*++p && depth > 0 && *p != '\n') | |
| 2269 { | |
| 2270 switch (*p) | |
| 2271 { | |
| 2272 case '(': | |
| 2273 depth++; break; | |
| 2274 case ')': | |
| 2275 depth--; break; | |
| 2276 } | |
| 2277 } | |
| 2278 | |
| 2279 /* If this is a macro, we have just passed | |
| 2280 the arguments and there will be more on | |
| 2281 the line before the NULL character that marks | |
| 2282 the end of the line token. */ | |
| 2283 while (*p == ' ' || *p == '\t') p++; | |
| 2284 if (*p) *is_func_or_var = TRUE; | |
| 2285 } | |
| 2286 } | |
| 2287 } | |
| 2288 | |
| 2289 set_construct((*is_func_or_var) ? C_MACRO : C_CONSTANT); | |
| 2290 #endif | |
| 2291 if (!*is_func_or_var && !constantypedefs) | |
| 2292 return FALSE; | |
| 2293 else | |
| 2294 return TRUE; | |
| 2295 case dignorerest: | |
| 2296 return FALSE; | |
| 2297 default: | |
| 2298 error ("internal error: definedef value.", (char *)NULL); | |
| 2299 } | |
| 2300 | |
| 2301 /* | |
| 2302 * Now typedefs | |
| 2303 */ | |
| 2304 switch (typdef) | |
| 2305 { | |
| 2306 case tnone: | |
| 2307 if (toktype == st_C_typedef) | |
| 2308 { | |
| 2309 if (typedefs) | |
| 2310 typdef = ttypedseen; | |
| 2311 fvdef = fvnone; | |
| 2312 return FALSE; | |
| 2313 } | |
| 2314 break; | |
| 2315 case ttypedseen: | |
| 2316 switch (toktype) | |
| 2317 { | |
| 2318 case st_C_const: | |
| 2319 set_construct(C_CONSTANT); | |
| 2320 /* fall through */ | |
| 2321 case st_none: | |
| 2322 case st_C_typespec: | |
| 2323 #ifdef OO_BROWSER | |
| 2324 case st_C_extern: | |
| 2325 #endif | |
| 2326 typdef = tend; | |
| 2327 break; | |
| 2328 case st_C_struct: | |
| 2329 case st_C_enum: | |
| 2330 #ifdef OO_BROWSER | |
| 2331 case st_C_union: | |
| 2332 case st_C_class: | |
| 2333 #endif | |
| 2334 break; | |
| 2335 } | |
| 2336 /* Do not return here, so the structdef stuff has a chance. */ | |
| 2337 break; | |
| 2338 case tend: | |
| 2339 switch (toktype) | |
| 2340 { | |
| 2341 case st_C_const: | |
| 2342 set_construct(C_CONSTANT); | |
| 2343 /* fall through */ | |
| 2344 case st_C_typespec: | |
| 2345 case st_C_struct: | |
| 2346 case st_C_enum: | |
| 2347 #ifdef OO_BROWSER | |
| 2348 case st_C_extern: | |
| 2349 case st_C_union: | |
| 2350 case st_C_class: | |
| 2351 #endif | |
| 2352 return FALSE; | |
| 2353 } | |
| 2354 return TRUE; | |
| 2355 } | |
| 2356 | |
| 2357 /* | |
| 2358 * This structdef business is currently only invoked when cblev==0. | |
| 2359 * It should be recursively invoked whatever the curly brace level, | |
| 2360 * and a stack of states kept, to allow for definitions of structs | |
| 2361 * within structs. | |
| 2362 * | |
| 2363 * This structdef business is NOT invoked when we are ctags and the | |
| 2364 * file is plain C. This is because a struct tag may have the same | |
| 2365 * name as another tag, and this loses with ctags. | |
| 2366 */ | |
| 2367 switch (toktype) | |
| 2368 { | |
| 2369 case st_C_javastruct: | |
| 2370 if (structdef == stagseen) | |
| 2371 structdef = scolonseen; | |
| 2372 return FALSE; | |
| 2373 case st_C_struct: | |
| 2374 case st_C_enum: | |
| 2375 #ifdef OO_BROWSER | |
| 2376 case st_C_union: | |
| 2377 case st_C_class: | |
| 2378 case st_C_extern: | |
| 2379 #endif | |
| 2380 if (typdef == ttypedseen | |
| 2381 || (typedefs_and_cplusplus && cblev == 0 && structdef == snone)) | |
| 2382 { | |
| 2383 structdef = skeyseen; | |
| 2384 structtype = toktype; | |
| 2385 } | |
| 2386 return FALSE; | |
| 2387 } | |
| 2388 | |
| 2389 if (structdef == skeyseen) | |
| 2390 { | |
| 2391 /* Save the tag for struct/union/class, for functions and variables | |
| 2392 that may be defined inside. */ | |
| 2393 #ifndef OO_BROWSER | |
| 2394 if (structtype == st_C_struct) | |
| 2395 #else | |
| 2396 if (structtype == st_C_struct | |
| 2397 || structtype == st_C_union | |
| 2398 || structtype == st_C_class) | |
| 2399 #endif | |
| 2400 structtag = savenstr (str, len); | |
| 2401 else | |
| 2402 structtag = "<enum>"; | |
| 2403 structdef = stagseen; | |
| 2404 return TRUE; | |
| 2405 } | |
| 2406 | |
| 2407 /* Avoid entering fvdef stuff if typdef is going on. */ | |
| 2408 if (typdef != tnone) | |
| 2409 { | |
| 2410 definedef = dnone; | |
| 2411 return FALSE; | |
| 2412 } | |
| 2413 | |
| 2414 /* Detect GNU macros. | |
| 2415 | |
| 2416 DEFUN note for writers of emacs C code: | |
| 2417 The DEFUN macro, used in emacs C source code, has a first arg | |
| 2418 that is a string (the lisp function name), and a second arg that | |
| 2419 is a C function name. Since etags skips strings, the second arg | |
| 2420 is tagged. This is unfortunate, as it would be better to tag the | |
| 2421 first arg. The simplest way to deal with this problem would be | |
| 2422 to name the tag with a name built from the function name, by | |
| 2423 removing the initial 'F' character and substituting '-' for '_'. | |
| 2424 Anyway, this assumes that the conventions of naming lisp | |
| 2425 functions will never change. Currently, this method is not | |
| 2426 implemented, so writers of emacs code are recommended to put the | |
| 2427 first two args of a DEFUN on the same line. */ | |
| 2428 if (definedef == dnone && toktype == st_C_gnumacro) | |
| 2429 { | |
| 2430 next_token_is_func = TRUE; | |
| 2431 return FALSE; | |
| 2432 } | |
| 2433 if (next_token_is_func) | |
| 2434 { | |
| 2435 next_token_is_func = FALSE; | |
| 2436 fvdef = fignore; | |
| 2437 *is_func_or_var = TRUE; | |
| 2438 return TRUE; | |
| 2439 } | |
| 2440 | |
| 2441 /* Detect Objective C constructs. */ | |
| 2442 switch (objdef) | |
| 2443 { | |
| 2444 case onone: | |
| 2445 switch (toktype) | |
| 2446 { | |
| 2447 case st_C_objprot: | |
| 2448 #ifdef OO_BROWSER | |
| 2449 set_construct(C_OBJC); | |
| 2450 #endif | |
| 2451 objdef = oprotocol; | |
| 2452 return FALSE; | |
| 2453 case st_C_objimpl: | |
| 2454 #ifdef OO_BROWSER | |
| 2455 set_construct(C_OBJC); | |
| 2456 #endif | |
| 2457 objdef = oimplementation; | |
| 2458 return FALSE; | |
| 2459 } | |
| 2460 break; | |
| 2461 case oimplementation: | |
| 2462 /* Save the class tag for functions or variables defined inside. */ | |
| 2463 objtag = savenstr (str, len); | |
| 2464 objdef = oinbody; | |
| 2465 return FALSE; | |
| 2466 case oprotocol: | |
| 2467 /* Save the class tag for categories. */ | |
| 2468 objtag = savenstr (str, len); | |
| 2469 objdef = otagseen; | |
| 2470 *is_func_or_var = TRUE; | |
| 2471 return TRUE; | |
| 2472 case oparenseen: | |
| 2473 objdef = ocatseen; | |
| 2474 *is_func_or_var = TRUE; | |
| 2475 return TRUE; | |
| 2476 case oinbody: | |
| 2477 break; | |
| 2478 case omethodsign: | |
| 2479 if (parlev == 0) | |
| 2480 { | |
| 2481 objdef = omethodtag; | |
| 2482 methodlen = len; | |
| 2483 grow_linebuffer (&token_name, methodlen + 1); | |
| 2484 strncpy (token_name.buffer, str, len); | |
| 2485 token_name.buffer[methodlen] = '\0'; | |
| 2486 token_name.len = methodlen; | |
| 2487 return TRUE; | |
| 2488 } | |
| 2489 return FALSE; | |
| 2490 case omethodcolon: | |
| 2491 if (parlev == 0) | |
| 2492 objdef = omethodparm; | |
| 2493 return FALSE; | |
| 2494 case omethodparm: | |
| 2495 if (parlev == 0) | |
| 2496 { | |
| 2497 objdef = omethodtag; | |
| 2498 methodlen += len; | |
| 2499 grow_linebuffer (&token_name, methodlen + 1); | |
| 2500 strncat (token_name.buffer, str, len); | |
| 2501 token_name.len = methodlen; | |
| 2502 return TRUE; | |
| 2503 } | |
| 2504 return FALSE; | |
| 2505 case oignore: | |
| 2506 if (toktype == st_C_objend) | |
| 2507 { | |
| 2508 /* Memory leakage here: the string pointed by objtag is | |
| 2509 never released, because many tests would be needed to | |
| 2510 avoid breaking on incorrect input code. The amount of | |
| 2511 memory leaked here is the sum of the lengths of the | |
| 2512 class tags. | |
| 2513 free (objtag); */ | |
| 2514 objdef = onone; | |
| 2515 } | |
| 2516 return FALSE; | |
| 2517 } | |
| 2518 | |
| 2519 /* A function, variable or enum constant? */ | |
| 2520 switch (toktype) | |
| 2521 { | |
| 2522 case st_C_const: | |
| 2523 set_construct(C_CONSTANT); | |
| 2524 /* fall through */ | |
| 2525 case st_C_typespec: | |
| 2526 #ifdef OO_BROWSER | |
| 2527 case st_C_extern: | |
| 2528 #endif | |
| 2529 if (fvdef != finlist && fvdef != fignore && fvdef != vignore) | |
| 2530 fvdef = fvnone; /* should be useless */ | |
| 2531 return FALSE; | |
| 2532 case st_C_ignore: | |
| 2533 fvdef = vignore; | |
| 2534 return FALSE; | |
| 2535 case st_none: | |
| 2536 if (constantypedefs && structdef == sinbody && structtype == st_C_enum) | |
| 2537 #ifdef OO_BROWSER | |
| 2538 { | |
| 2539 oo_browser_construct = C_ENUM_LABEL; | |
| 2540 #endif | |
| 2541 return TRUE; | |
| 2542 #ifdef OO_BROWSER | |
| 2543 } | |
| 2544 #endif | |
| 2545 if (fvdef == fvnone) | |
| 2546 { | |
| 2547 fvdef = fvnameseen; /* function or variable */ | |
| 2548 *is_func_or_var = TRUE; | |
| 2549 return TRUE; | |
| 2550 } | |
| 2551 } | |
| 2552 | |
| 2553 return FALSE; | |
| 2554 } | |
| 2555 | |
| 2556 /* | |
| 2557 * C_entries () | |
| 2558 * This routine finds functions, variables, typedefs, | |
| 2559 * #define's, enum constants and struct/union/enum definitions in | |
| 2560 * #C syntax and adds them to the list. | |
| 2561 */ | |
| 2562 #define current_lb_is_new (newndx == curndx) | |
| 2563 #define switch_line_buffers() (curndx = 1 - curndx) | |
| 2564 | |
| 2565 #define curlb (lbs[curndx].lb) | |
| 2566 #define othlb (lbs[1-curndx].lb) | |
| 2567 #define newlb (lbs[newndx].lb) | |
| 2568 #define curlinepos (lbs[curndx].linepos) | |
| 2569 #define othlinepos (lbs[1-curndx].linepos) | |
| 2570 #define newlinepos (lbs[newndx].linepos) | |
| 2571 | |
| 2572 #define CNL_SAVE_DEFINEDEF() \ | |
| 2573 do { \ | |
| 2574 curlinepos = charno; \ | |
| 2575 lineno++; \ | |
| 2576 linecharno = charno; \ | |
| 2577 charno += readline (&curlb, inf); \ | |
| 2578 lp = curlb.buffer; \ | |
| 2579 quotednl = FALSE; \ | |
| 2580 newndx = curndx; \ | |
| 2581 } while (0) | |
| 2582 | |
| 2583 #define CNL() \ | |
| 2584 do { \ | |
| 2585 CNL_SAVE_DEFINEDEF(); \ | |
| 2586 if (savetok.valid) \ | |
| 2587 { \ | |
| 2588 tok = savetok; \ | |
| 2589 savetok.valid = FALSE; \ | |
| 2590 } \ | |
| 2591 definedef = dnone; \ | |
| 2592 } while (0) | |
| 2593 | |
| 2594 | |
| 2595 void make_C_tag PP ((bool isfun)); | |
| 2596 void | |
| 2597 make_C_tag (isfun) | |
| 2598 bool isfun; | |
| 2599 { | |
| 2600 /* This function should never be called when tok.valid is FALSE, but | |
| 2601 we must protect against invalid input or internal errors. */ | |
| 2602 if (tok.valid) | |
| 2603 { | |
| 2604 if (traditional_tag_style) | |
| 2605 { | |
| 2606 /* This was the original code. Now we call new_pfnote instead, | |
| 2607 which uses the new method for naming tags (see new_pfnote). */ | |
| 2608 char *name = NULL; | |
| 2609 | |
| 2610 if (CTAGS || tok.named) | |
| 2611 name = savestr (token_name.buffer); | |
| 2612 pfnote (name, isfun, | |
| 2613 tok.buffer, tok.linelen, tok.lineno, tok.linepos); | |
| 2614 } | |
| 2615 else | |
| 2616 new_pfnote (token_name.buffer, token_name.len, isfun, | |
| 2617 tok.buffer, tok.linelen, tok.lineno, tok.linepos); | |
| 2618 tok.valid = FALSE; | |
| 2619 } | |
| 2620 else if (DEBUG) | |
| 2621 abort (); | |
| 2622 } | |
| 2623 | |
| 2624 | |
| 2625 void | |
| 2626 C_entries (c_ext, inf) | |
| 2627 int c_ext; /* extension of C */ | |
| 2628 FILE *inf; /* input file */ | |
| 2629 { | |
| 2630 register char c; /* latest char read; '\0' for end of line */ | |
| 2631 register char *lp; /* pointer one beyond the character `c' */ | |
| 2632 int curndx, newndx; /* indices for current and new lb */ | |
| 2633 register int tokoff; /* offset in line of start of current token */ | |
| 2634 register int toklen; /* length of current token */ | |
| 2635 char *qualifier; /* string used to qualify names */ | |
| 2636 int qlen; /* length of qualifier */ | |
| 2637 int cblev; /* current curly brace level */ | |
| 2638 int parlev; /* current parenthesis level */ | |
| 2639 bool incomm, inquote, inchar, quotednl, midtoken; | |
| 2640 bool cplpl, cjava; | |
| 4932 | 2641 token savetok = {0}; /* token saved during preprocessor handling */ |
| 428 | 2642 |
| 2643 | |
| 2644 tokoff = toklen = 0; /* keep compiler quiet */ | |
| 2645 curndx = newndx = 0; | |
| 2646 lineno = 0; | |
| 2647 charno = 0; | |
| 2648 lp = curlb.buffer; | |
| 2649 *lp = 0; | |
| 2650 | |
| 2651 fvdef = fvnone; typdef = tnone; structdef = snone; | |
| 2652 definedef = dnone; objdef = onone; | |
| 2653 next_token_is_func = yacc_rules = FALSE; | |
| 2654 midtoken = inquote = inchar = incomm = quotednl = FALSE; | |
| 2655 tok.valid = savetok.valid = FALSE; | |
| 2656 cblev = 0; | |
| 2657 parlev = 0; | |
| 2658 cplpl = (c_ext & C_PLPL) == C_PLPL; | |
| 2659 cjava = (c_ext & C_JAVA) == C_JAVA; | |
| 2660 if (cjava) | |
| 2661 { qualifier = "."; qlen = 1; } | |
| 2662 else | |
| 2663 { qualifier = "::"; qlen = 2; } | |
| 2664 | |
| 2665 while (!feof (inf)) | |
| 2666 { | |
| 2667 c = *lp++; | |
| 2668 if (c == '\\') | |
| 2669 { | |
| 2670 /* If we're at the end of the line, the next character is a | |
| 2671 '\0'; don't skip it, because it's the thing that tells us | |
| 2672 to read the next line. */ | |
| 2673 if (*lp == '\0') | |
| 2674 { | |
| 2675 quotednl = TRUE; | |
| 2676 continue; | |
| 2677 } | |
| 2678 lp++; | |
| 2679 c = ' '; | |
| 2680 } | |
| 2681 else if (incomm) | |
| 2682 { | |
| 2683 switch (c) | |
| 2684 { | |
| 2685 case '*': | |
| 2686 if (*lp == '/') | |
| 2687 { | |
| 2688 c = *lp++; | |
| 2689 incomm = FALSE; | |
| 2690 } | |
| 2691 break; | |
| 2692 case '\0': | |
| 2693 /* Newlines inside comments do not end macro definitions in | |
| 2694 traditional cpp. */ | |
| 2695 CNL_SAVE_DEFINEDEF (); | |
| 2696 break; | |
| 2697 } | |
| 2698 continue; | |
| 2699 } | |
| 2700 else if (inquote) | |
| 2701 { | |
| 2702 switch (c) | |
| 2703 { | |
| 2704 case '"': | |
| 2705 inquote = FALSE; | |
| 2706 break; | |
| 2707 case '\0': | |
| 2708 /* Newlines inside strings do not end macro definitions | |
| 2709 in traditional cpp, even though compilers don't | |
| 2710 usually accept them. */ | |
| 2711 CNL_SAVE_DEFINEDEF (); | |
| 2712 break; | |
| 2713 } | |
| 2714 continue; | |
| 2715 } | |
| 2716 else if (inchar) | |
| 2717 { | |
| 2718 switch (c) | |
| 2719 { | |
| 2720 case '\0': | |
| 2721 /* Hmmm, something went wrong. */ | |
| 2722 CNL (); | |
| 2723 /* FALLTHRU */ | |
| 2724 case '\'': | |
| 2725 inchar = FALSE; | |
| 2726 break; | |
| 2727 } | |
| 2728 continue; | |
| 2729 } | |
| 2730 else | |
| 2731 switch (c) | |
| 2732 { | |
| 2733 case '"': | |
| 2734 inquote = TRUE; | |
| 2735 if (fvdef != finlist && fvdef != fignore && fvdef !=vignore) | |
| 2736 fvdef = fvnone; | |
| 2737 continue; | |
| 2738 case '\'': | |
| 2739 inchar = TRUE; | |
| 2740 if (fvdef != finlist && fvdef != fignore && fvdef !=vignore) | |
| 2741 fvdef = fvnone; | |
| 2742 continue; | |
| 2743 case '/': | |
| 2744 if (*lp == '*') | |
| 2745 { | |
| 2746 lp++; | |
| 2747 incomm = TRUE; | |
| 2748 continue; | |
| 2749 } | |
| 2750 else if (/* cplpl && */ *lp == '/') | |
| 2751 { | |
| 2752 c = '\0'; | |
| 2753 break; | |
| 2754 } | |
| 2755 else | |
| 2756 break; | |
| 2757 case '%': | |
| 2758 if ((c_ext & YACC) && *lp == '%') | |
| 2759 { | |
| 2760 /* entering or exiting rules section in yacc file */ | |
| 2761 lp++; | |
| 2762 definedef = dnone; fvdef = fvnone; | |
| 2763 typdef = tnone; structdef = snone; | |
| 2764 next_token_is_func = FALSE; | |
| 2765 midtoken = inquote = inchar = incomm = quotednl = FALSE; | |
| 2766 cblev = 0; | |
| 2767 yacc_rules = !yacc_rules; | |
| 2768 continue; | |
| 2769 } | |
| 2770 else | |
| 2771 break; | |
| 2772 case '#': | |
| 2773 if (definedef == dnone) | |
| 2774 { | |
| 2775 char *cp; | |
| 2776 bool cpptoken = TRUE; | |
| 2777 | |
| 2778 /* Look back on this line. If all blanks, or nonblanks | |
| 2779 followed by an end of comment, this is a preprocessor | |
| 2780 token. */ | |
| 2781 for (cp = newlb.buffer; cp < lp-1; cp++) | |
| 2782 if (!iswhite (*cp)) | |
| 2783 { | |
| 2784 if (*cp == '*' && *(cp+1) == '/') | |
| 2785 { | |
| 2786 cp++; | |
| 2787 cpptoken = TRUE; | |
| 2788 } | |
| 2789 else | |
| 2790 cpptoken = FALSE; | |
| 2791 } | |
| 2792 if (cpptoken) | |
| 2793 definedef = dsharpseen; | |
| 2794 } /* if (definedef == dnone) */ | |
| 2795 | |
| 2796 continue; | |
| 2797 } /* switch (c) */ | |
| 2798 | |
| 2799 | |
| 2800 /* Consider token only if some complicated conditions are satisfied. */ | |
| 2801 if ((definedef != dnone | |
| 2802 || (cblev == 0 && structdef != scolonseen) | |
| 2803 || (cblev == 1 && cplpl && structdef == sinbody) | |
| 2804 || (structdef == sinbody && structtype == st_C_enum)) | |
| 2805 && typdef != tignore | |
| 2806 && definedef != dignorerest | |
| 2807 && fvdef != finlist) | |
| 2808 { | |
| 2809 if (midtoken) | |
| 2810 { | |
| 2811 if (endtoken (c)) | |
| 2812 { | |
| 2813 if (c == ':' && cplpl && *lp == ':' && begtoken(*(lp + 1))) | |
| 2814 { | |
| 2815 /* | |
| 2816 * This handles :: in the middle, but not at the | |
| 2817 * beginning of an identifier. | |
| 2818 */ | |
| 2819 lp += 2; | |
| 2820 toklen += 3; | |
| 2821 #ifdef OO_BROWSER | |
| 2822 set_construct(C_METHOD); | |
| 2823 #endif | |
| 2824 } | |
| 2825 else | |
| 2826 { | |
| 2827 bool funorvar = FALSE; | |
| 2828 | |
| 2829 if (yacc_rules | |
| 2830 || consider_token (newlb.buffer + tokoff, toklen, c, | |
| 2831 c_ext, cblev, parlev, &funorvar)) | |
| 2832 { | |
| 2833 tok.named = FALSE; | |
| 2834 if (structdef == sinbody | |
| 2835 && definedef == dnone | |
| 2836 && funorvar) | |
| 2837 /* function or var defined in C++ class body */ | |
| 2838 { | |
| 2839 int len = strlen (structtag) + qlen + toklen; | |
| 2840 grow_linebuffer (&token_name, len + 1); | |
| 2841 strcpy (token_name.buffer, structtag); | |
| 2842 strcat (token_name.buffer, qualifier); | |
| 2843 strncat (token_name.buffer, | |
| 2844 newlb.buffer + tokoff, toklen); | |
| 2845 token_name.len = len; | |
| 2846 tok.named = TRUE; | |
| 2847 #ifdef OO_BROWSER | |
| 2848 oo_browser_construct = C_METHOD; | |
| 2849 #endif | |
| 2850 } | |
| 2851 else if (objdef == ocatseen) | |
| 2852 /* Objective C category */ | |
| 2853 { | |
| 2854 int len = strlen (objtag) + 2 + toklen; | |
| 2855 grow_linebuffer (&token_name, len + 1); | |
| 2856 strcpy (token_name.buffer, objtag); | |
| 2857 strcat (token_name.buffer, "("); | |
| 2858 strncat (token_name.buffer, | |
| 2859 newlb.buffer + tokoff, toklen); | |
| 2860 strcat (token_name.buffer, ")"); | |
| 2861 token_name.len = len; | |
| 2862 tok.named = TRUE; | |
| 2863 #ifdef OO_BROWSER | |
| 2864 oo_browser_construct = C_OBJC; | |
| 2865 #endif | |
| 2866 } | |
| 2867 else if (objdef == omethodtag | |
| 2868 || objdef == omethodparm) | |
| 2869 /* Objective C method */ | |
| 2870 { | |
| 2871 tok.named = TRUE; | |
| 2872 #ifdef OO_BROWSER | |
| 2873 oo_browser_construct = C_OBJC; | |
| 2874 #endif | |
| 2875 } | |
| 2876 else | |
| 2877 { | |
| 2878 grow_linebuffer (&token_name, toklen + 1); | |
| 2879 strncpy (token_name.buffer, | |
| 2880 newlb.buffer + tokoff, toklen); | |
| 2881 token_name.buffer[toklen] = '\0'; | |
| 2882 token_name.len = toklen; | |
| 2883 /* Name macros. */ | |
| 2884 tok.named | |
| 2885 = (structdef == stagseen | |
| 2886 || typdef == tend | |
| 2887 #ifdef OO_BROWSER | |
| 2888 /* Also name #define constants, | |
| 2889 enumerations and enum_labels. | |
| 2890 Conditionalize `funorvar' reference | |
| 2891 here or #defines will appear without | |
| 2892 their #names. | |
| 2893 -- Bob Weiner, Altrasoft, 4/25/1998 */ | |
| 2894 || ((oo_browser_format || funorvar) | |
| 2895 && definedef == dignorerest) | |
| 2896 || (oo_browser_format | |
| 2897 && (oo_browser_construct == C_ENUMERATION | |
| 2898 || oo_browser_construct == C_ENUM_LABEL)) | |
| 2899 #else | |
| 2900 || (funorvar | |
| 2901 && definedef == dignorerest) | |
| 2902 #endif | |
| 2903 ); | |
| 2904 } | |
| 2905 tok.lineno = lineno; | |
| 2906 tok.linelen = tokoff + toklen + 1; | |
| 2907 tok.buffer = newlb.buffer; | |
| 2908 tok.linepos = newlinepos; | |
| 2909 tok.valid = TRUE; | |
| 2910 | |
| 2911 if (definedef == dnone | |
| 2912 && (fvdef == fvnameseen | |
| 2913 || structdef == stagseen | |
| 2914 || typdef == tend | |
| 2915 || objdef != onone)) | |
| 2916 { | |
| 2917 if (current_lb_is_new) | |
| 2918 switch_line_buffers (); | |
| 2919 } | |
| 2920 else | |
| 2921 make_C_tag (funorvar); | |
| 2922 } | |
| 2923 midtoken = FALSE; | |
| 2924 } | |
| 2925 } /* if (endtoken (c)) */ | |
| 2926 else if (intoken (c)) | |
| 2927 { | |
| 2928 toklen++; | |
| 2929 continue; | |
| 2930 } | |
| 2931 } /* if (midtoken) */ | |
| 2932 else if (begtoken (c)) | |
| 2933 { | |
| 2934 switch (definedef) | |
| 2935 { | |
| 2936 case dnone: | |
| 2937 switch (fvdef) | |
| 2938 { | |
| 2939 case fstartlist: | |
| 2940 fvdef = finlist; | |
| 2941 continue; | |
| 2942 case flistseen: | |
| 2943 #ifdef OO_BROWSER | |
| 2944 set_construct(C_MACRO); | |
| 2945 #endif | |
| 2946 make_C_tag (TRUE); /* a function */ | |
| 2947 fvdef = fignore; | |
| 2948 break; | |
| 2949 case fvnameseen: | |
| 2950 fvdef = fvnone; | |
| 2951 break; | |
| 2952 } | |
| 2953 if (structdef == stagseen && !cjava) | |
| 2954 structdef = snone; | |
| 2955 break; | |
| 2956 case dsharpseen: | |
| 2957 savetok = tok; | |
| 2958 } | |
| 2959 if (!yacc_rules || lp == newlb.buffer + 1) | |
| 2960 { | |
| 2961 tokoff = lp - 1 - newlb.buffer; | |
| 2962 toklen = 1; | |
| 2963 midtoken = TRUE; | |
| 2964 } | |
| 2965 continue; | |
| 2966 } /* if (begtoken) */ | |
| 2967 } /* if must look at token */ | |
| 2968 | |
| 2969 | |
| 2970 /* Detect end of line, colon, comma, semicolon and various braces | |
| 2971 after having handled a token.*/ | |
| 2972 switch (c) | |
| 2973 { | |
| 2974 case ':': | |
| 2975 if (definedef != dnone) | |
| 2976 break; | |
| 2977 switch (objdef) | |
| 2978 { | |
| 2979 case otagseen: | |
| 2980 objdef = oignore; | |
| 2981 make_C_tag (TRUE); /* an Objective C class */ | |
| 2982 break; | |
| 2983 case omethodtag: | |
| 2984 case omethodparm: | |
| 2985 objdef = omethodcolon; | |
| 2986 methodlen += 1; | |
| 2987 grow_linebuffer (&token_name, methodlen + 1); | |
| 2988 strcat (token_name.buffer, ":"); | |
| 2989 token_name.len = methodlen; | |
| 2990 break; | |
| 2991 } | |
| 2992 if (structdef == stagseen) | |
| 2993 structdef = scolonseen; | |
| 2994 else | |
| 2995 switch (fvdef) | |
| 2996 { | |
| 2997 case fvnameseen: | |
| 2998 if (yacc_rules) | |
| 2999 { | |
| 3000 make_C_tag (FALSE); /* a yacc function */ | |
| 3001 fvdef = fignore; | |
| 3002 } | |
| 3003 break; | |
| 3004 case fstartlist: | |
| 3005 fvdef = fvnone; | |
| 3006 break; | |
| 3007 } | |
| 3008 break; | |
| 3009 case ';': | |
| 3010 if (definedef != dnone) | |
| 3011 break; | |
| 3012 if (cblev == 0) | |
| 3013 switch (typdef) | |
| 3014 { | |
| 3015 case tend: | |
| 3016 #ifdef OO_BROWSER | |
| 3017 set_construct(C_TYPE); | |
| 3018 #endif | |
| 3019 make_C_tag (FALSE); /* a typedef */ | |
| 3020 /* FALLTHRU */ | |
| 3021 default: | |
| 3022 typdef = tnone; | |
| 3023 } | |
| 3024 switch (fvdef) | |
| 3025 { | |
| 3026 case fignore: | |
| 3027 break; | |
| 3028 case fvnameseen: | |
| 3029 if ((globals && cblev == 0) || (members && cblev == 1)) | |
| 3030 #ifndef OO_BROWSER | |
| 3031 make_C_tag (FALSE); /* a variable */ | |
| 3032 #else | |
| 3033 /* if (constantypedefs && structdef == snone)*/ | |
| 3034 { | |
| 3035 tok.named = TRUE; | |
| 3036 switch (structtype) | |
| 3037 { | |
| 3038 case st_C_enum: | |
| 3039 set_construct(C_ENUMERATION); | |
| 3040 break; | |
| 3041 case st_C_class: | |
| 3042 set_construct(C_CLASS); | |
| 3043 break; | |
| 3044 default: | |
| 3045 set_construct(C_VARIABLE); | |
| 3046 break; | |
| 3047 } | |
| 3048 make_C_tag (FALSE); | |
| 3049 /* Force reset of st_C_enum structtype value. */ | |
| 3050 structtype = st_none; | |
| 3051 } | |
| 3052 #endif | |
| 3053 /* FALLTHRU */ | |
| 3054 default: | |
| 3055 fvdef = fvnone; | |
| 3056 /* The following instruction invalidates the token. | |
| 3057 Probably the token should be invalidated in all | |
| 3058 other cases where some state machine is reset. */ | |
| 3059 tok.valid = FALSE; | |
| 3060 } | |
| 3061 if (structdef == stagseen) | |
| 3062 structdef = snone; | |
| 3063 break; | |
| 3064 case ',': | |
| 3065 if (definedef != dnone) | |
| 3066 break; | |
| 3067 switch (objdef) | |
| 3068 { | |
| 3069 case omethodtag: | |
| 3070 case omethodparm: | |
| 3071 make_C_tag (TRUE); /* an Objective C method */ | |
| 3072 objdef = oinbody; | |
| 3073 break; | |
| 3074 } | |
| 3075 switch (fvdef) | |
| 3076 { | |
| 3077 case finlist: | |
| 3078 case fignore: | |
| 3079 case vignore: | |
| 3080 break; | |
| 3081 case fvnameseen: | |
| 3082 if ((globals && cblev == 0) || (members && cblev == 1)) | |
| 3083 make_C_tag (FALSE); /* a variable */ | |
| 3084 break; | |
| 3085 default: | |
| 3086 fvdef = fvnone; | |
| 3087 } | |
| 3088 if (structdef == stagseen) | |
| 3089 structdef = snone; | |
| 3090 break; | |
| 3091 case '[': | |
| 3092 if (definedef != dnone) | |
| 3093 break; | |
| 3094 if (cblev == 0 && typdef == tend) | |
| 3095 { | |
| 3096 #ifdef OO_BROWSER | |
| 3097 set_construct(C_TYPE); | |
| 3098 #endif | |
| 3099 typdef = tignore; | |
| 3100 make_C_tag (FALSE); /* a typedef */ | |
| 3101 break; | |
| 3102 } | |
| 3103 switch (fvdef) | |
| 3104 { | |
| 3105 case finlist: | |
| 3106 case fignore: | |
| 3107 case vignore: | |
| 3108 break; | |
| 3109 case fvnameseen: | |
| 3110 #ifndef OO_BROWSER | |
| 3111 if ((globals && cblev == 0) || (members && cblev == 1)) | |
| 3112 make_C_tag (FALSE); /* a variable */ | |
| 3113 #else | |
| 3114 if (constantypedefs && structdef == snone) | |
| 3115 { | |
| 3116 tok.named = TRUE; | |
| 3117 switch (structtype) | |
| 3118 { | |
| 3119 case st_C_enum: | |
| 3120 set_construct(C_ENUMERATION); | |
| 3121 break; | |
| 3122 case st_C_class: | |
| 3123 set_construct(C_CLASS); | |
| 3124 break; | |
| 3125 default: | |
| 3126 set_construct(C_VARIABLE); | |
| 3127 break; | |
| 3128 } | |
| 3129 make_C_tag (FALSE); | |
| 3130 /* Force reset of st_C_enum structtype value. */ | |
| 3131 structtype = st_none; | |
| 3132 } | |
| 3133 #endif | |
| 3134 /* FALLTHRU */ | |
| 3135 default: | |
| 3136 fvdef = fvnone; | |
| 3137 } | |
| 3138 if (structdef == stagseen) | |
| 3139 structdef = snone; | |
| 3140 break; | |
| 3141 case '(': | |
| 3142 if (definedef != dnone) | |
| 3143 break; | |
| 3144 if (objdef == otagseen && parlev == 0) | |
| 3145 objdef = oparenseen; | |
| 3146 switch (fvdef) | |
| 3147 { | |
| 3148 case fvnone: | |
| 3149 switch (typdef) | |
| 3150 { | |
| 3151 case ttypedseen: | |
| 3152 case tend: | |
| 3153 if (tok.valid && *lp != '*') | |
| 3154 { | |
| 3155 /* This handles constructs like: | |
| 3156 typedef void OperatorFun (int fun); */ | |
| 3157 typdef = tignore; | |
| 3158 #ifdef OO_BROWSER | |
| 3159 set_construct(C_TYPE); | |
| 3160 #endif | |
| 3161 make_C_tag (FALSE); | |
| 3162 } | |
| 3163 break; | |
| 3164 } /* switch (typdef) */ | |
| 3165 break; | |
| 3166 case fvnameseen: | |
| 3167 fvdef = fstartlist; | |
| 3168 break; | |
| 3169 case flistseen: | |
| 3170 fvdef = finlist; | |
| 3171 break; | |
| 3172 } | |
| 3173 parlev++; | |
| 3174 break; | |
| 3175 case ')': | |
| 3176 if (definedef != dnone) | |
| 3177 break; | |
| 3178 if (objdef == ocatseen && parlev == 1) | |
| 3179 { | |
| 3180 make_C_tag (TRUE); /* an Objective C category */ | |
| 3181 objdef = oignore; | |
| 3182 } | |
| 3183 if (--parlev == 0) | |
| 3184 { | |
| 3185 switch (fvdef) | |
| 3186 { | |
| 3187 case fstartlist: | |
| 3188 case finlist: | |
| 3189 fvdef = flistseen; | |
| 3190 break; | |
| 3191 } | |
| 3192 if (cblev == 0 && typdef == tend) | |
| 3193 { | |
| 3194 #ifdef OO_BROWSER | |
| 3195 set_construct(C_TYPE); | |
| 3196 #endif | |
| 3197 typdef = tignore; | |
| 3198 make_C_tag (FALSE); /* a typedef */ | |
| 3199 } | |
| 3200 } | |
| 3201 else if (parlev < 0) /* can happen due to ill-conceived #if's. */ | |
| 3202 parlev = 0; | |
| 3203 break; | |
| 3204 case '{': | |
| 3205 if (definedef != dnone) | |
| 3206 break; | |
| 3207 if (typdef == ttypedseen) | |
| 3208 typdef = tinbody; | |
| 3209 switch (structdef) | |
| 3210 { | |
| 3211 case skeyseen: /* unnamed struct */ | |
| 3212 structdef = sinbody; | |
| 3213 structtag = "_anonymous_"; | |
| 3214 break; | |
| 3215 case stagseen: | |
| 3216 case scolonseen: /* named struct */ | |
| 3217 structdef = sinbody; | |
| 3218 make_C_tag (FALSE); /* a struct */ | |
| 3219 break; | |
| 3220 } | |
| 3221 switch (fvdef) | |
| 3222 { | |
| 3223 case flistseen: | |
| 3224 #ifdef OO_BROWSER | |
| 3225 set_construct(C_FUNCTION); | |
| 3226 /* Ensure function name is recorded. | |
| 3227 -- Bob Weiner, Altrasoft */ | |
| 3228 tok.named = TRUE; | |
| 3229 #endif | |
| 3230 make_C_tag (TRUE); /* a function */ | |
| 3231 /* FALLTHRU */ | |
| 3232 case fignore: | |
| 3233 fvdef = fvnone; | |
| 3234 break; | |
| 3235 case fvnone: | |
| 3236 switch (objdef) | |
| 3237 { | |
| 3238 case otagseen: | |
| 3239 make_C_tag (TRUE); /* an Objective C class */ | |
| 3240 objdef = oignore; | |
| 3241 break; | |
| 3242 case omethodtag: | |
| 3243 case omethodparm: | |
| 3244 make_C_tag (TRUE); /* an Objective C method */ | |
| 3245 objdef = oinbody; | |
| 3246 break; | |
| 3247 default: | |
| 3248 /* Neutralize `extern "C" {' grot. */ | |
| 3249 if (cblev == 0 && structdef == snone && typdef == tnone) | |
| 3250 cblev = -1; | |
| 3251 } | |
| 3252 } | |
| 3253 cblev++; | |
| 3254 break; | |
| 3255 case '*': | |
| 3256 if (definedef != dnone) | |
| 3257 break; | |
| 3258 if (fvdef == fstartlist) | |
| 3259 fvdef = fvnone; /* avoid tagging `foo' in `foo (*bar()) ()' */ | |
| 3260 break; | |
| 3261 case '}': | |
| 3262 if (definedef != dnone) | |
| 3263 break; | |
| 3264 if (!noindentypedefs && lp == newlb.buffer + 1) | |
| 3265 { | |
| 3266 cblev = 0; /* reset curly brace level if first column */ | |
| 3267 parlev = 0; /* also reset paren level, just in case... */ | |
| 3268 } | |
| 3269 else if (cblev > 0) | |
| 3270 cblev--; | |
| 3271 if (cblev == 0) | |
| 3272 { | |
| 3273 if (typdef == tinbody) | |
| 3274 typdef = tend; | |
| 3275 /* Memory leakage here: the string pointed by structtag is | |
| 3276 never released, because I fear to miss something and | |
| 3277 break things while freeing the area. The amount of | |
| 3278 memory leaked here is the sum of the lengths of the | |
| 3279 struct tags. | |
| 3280 if (structdef == sinbody) | |
| 3281 free (structtag); */ | |
| 3282 | |
| 3283 structdef = snone; | |
| 3284 structtag = "<error>"; | |
| 3285 #ifdef OO_BROWSER | |
| 3286 /* Next line added to avoid any state carryover between | |
| 3287 functions. -- Bob Weiner, Altrasoft, 11/19/1997 */ | |
| 3288 fvdef = fvnone; oo_browser_construct = C_NULL; | |
| 3289 #endif | |
| 3290 } | |
| 3291 break; | |
| 3292 case '=': | |
| 3293 if (definedef != dnone) | |
| 3294 break; | |
| 3295 #ifdef OO_BROWSER | |
| 3296 { | |
| 3297 int is_method = 0; | |
| 3298 #endif | |
| 3299 switch (fvdef) | |
| 3300 { | |
| 3301 case finlist: | |
| 3302 case fignore: | |
| 3303 case vignore: | |
| 3304 break; | |
| 3305 case fvnameseen: | |
| 3306 if ((globals && cblev == 0) || (members && cblev == 1)) | |
| 3307 #ifndef OO_BROWSER | |
| 3308 make_C_tag (FALSE); /* a variable */ | |
| 3309 #else | |
| 3310 { | |
| 3311 tok.named = TRUE; | |
| 3312 switch (structtype) | |
| 3313 { | |
| 3314 case st_C_enum: | |
| 3315 set_construct(C_ENUMERATION); | |
| 3316 break; | |
| 3317 case st_C_class: | |
| 3318 set_construct(C_CLASS); | |
| 3319 break; | |
| 3320 default: | |
| 3321 /* a global variable */ | |
| 3322 set_construct(C_VARIABLE); | |
| 3323 break; | |
| 3324 } | |
| 3325 | |
| 3326 /* ootags categorizes each tag found whereas etags doesn't. | |
| 3327 Set the is_method flag if this tag has been marked as | |
| 3328 such by an earlier section of code. | |
| 3329 -- Steve Baur, Altrasoft, 5/7/1998 */ | |
| 3330 is_method = (oo_browser_construct == C_METHOD); | |
| 3331 | |
| 3332 make_C_tag (FALSE); | |
| 3333 /* Force reset of st_C_enum structtype value. */ | |
| 3334 structtype = st_none; | |
| 3335 } | |
| 3336 #endif | |
| 3337 /* FALLTHRU */ | |
| 3338 default: | |
| 3339 #ifdef OO_BROWSER | |
| 3340 fvdef = is_method ? fignore : vignore; | |
| 3341 #else | |
| 3342 fvdef = vignore; | |
| 3343 #endif | |
| 3344 } | |
| 3345 #ifdef OO_BROWSER | |
| 3346 } | |
| 3347 #endif | |
| 3348 break; | |
| 3349 case '+': | |
| 3350 case '-': | |
| 3351 if (objdef == oinbody && cblev == 0) | |
| 3352 { | |
| 3353 objdef = omethodsign; | |
| 3354 break; | |
| 3355 } | |
| 3356 /* FALLTHRU */ | |
| 3357 case '#': case '~': case '&': case '%': case '/': case '|': | |
| 3358 case '^': case '!': case '<': case '>': case '.': case '?': case ']': | |
| 3359 if (definedef != dnone) | |
| 3360 break; | |
| 3361 #ifdef OO_BROWSER | |
| 3362 if (!cplpl) | |
| 3363 { | |
| 3364 #endif | |
| 3365 /* The above characters cannot follow a function tag in C, so | |
| 3366 unmark this as a function entry. For C++, these characters | |
| 3367 may follow an `operator' function construct, so skip the | |
| 3368 unmarking conditional below. | |
| 3369 -- Steve Baur, Altrasoft, 5/7/1998 */ | |
| 3370 if (fvdef != finlist && fvdef != fignore && fvdef != vignore) | |
| 3371 fvdef = fvnone; | |
| 3372 #ifdef OO_BROWSER | |
| 3373 } | |
| 3374 #endif | |
| 3375 break; | |
| 3376 case '\0': | |
| 3377 if (objdef == otagseen) | |
| 3378 { | |
| 3379 make_C_tag (TRUE); /* an Objective C class */ | |
| 3380 objdef = oignore; | |
| 3381 } | |
| 3382 /* If a macro spans multiple lines don't reset its state. */ | |
| 3383 if (quotednl) | |
| 3384 CNL_SAVE_DEFINEDEF (); | |
| 3385 else | |
| 3386 CNL (); | |
| 3387 break; | |
| 3388 } /* switch (c) */ | |
| 3389 | |
| 3390 } /* while not eof */ | |
| 3391 } | |
| 3392 | |
| 3393 /* | |
| 3394 * Process either a C++ file or a C file depending on the setting | |
| 3395 * of a global flag. | |
| 3396 */ | |
| 3397 void | |
| 3398 default_C_entries (inf) | |
| 3399 FILE *inf; | |
| 3400 { | |
| 3401 C_entries (cplusplus ? C_PLPL : 0, inf); | |
| 3402 } | |
| 3403 | |
| 3404 /* Always do plain ANSI C. */ | |
| 3405 void | |
| 3406 plain_C_entries (inf) | |
| 3407 FILE *inf; | |
| 3408 { | |
| 3409 C_entries (0, inf); | |
| 3410 } | |
| 3411 | |
| 3412 /* Always do C++. */ | |
| 3413 void | |
| 3414 Cplusplus_entries (inf) | |
| 3415 FILE *inf; | |
| 3416 { | |
| 3417 C_entries (C_PLPL, inf); | |
| 3418 } | |
| 3419 | |
| 3420 /* Always do Java. */ | |
| 3421 void | |
| 3422 Cjava_entries (inf) | |
| 3423 FILE *inf; | |
| 3424 { | |
| 3425 C_entries (C_JAVA, inf); | |
| 3426 } | |
| 3427 | |
| 3428 /* Always do C*. */ | |
| 3429 void | |
| 3430 Cstar_entries (inf) | |
| 3431 FILE *inf; | |
| 3432 { | |
| 3433 C_entries (C_STAR, inf); | |
| 3434 } | |
| 3435 | |
| 3436 /* Always do Yacc. */ | |
| 3437 void | |
| 3438 Yacc_entries (inf) | |
| 3439 FILE *inf; | |
| 3440 { | |
| 3441 C_entries (YACC, inf); | |
| 3442 } | |
| 3443 | |
| 3444 /* A useful macro. */ | |
| 3445 #define LOOP_ON_INPUT_LINES(file_pointer, line_buffer, char_pointer) \ | |
| 3446 for (lineno = charno = 0; /* loop initialization */ \ | |
| 3447 !feof (file_pointer) /* loop test */ \ | |
| 3448 && (lineno++, /* instructions at start of loop */ \ | |
| 3449 linecharno = charno, \ | |
| 3450 charno += readline (&line_buffer, file_pointer), \ | |
| 3451 char_pointer = lb.buffer, \ | |
| 3452 TRUE); \ | |
| 3453 ) | |
| 3454 | |
| 3455 | |
| 3456 /* | |
| 3457 * Read a file, but do no processing. This is used to do regexp | |
| 3458 * matching on files that have no language defined. | |
| 3459 */ | |
| 3460 void | |
| 3461 just_read_file (inf) | |
| 3462 FILE *inf; | |
| 3463 { | |
| 3464 register char *dummy; | |
| 3465 | |
| 3466 LOOP_ON_INPUT_LINES (inf, lb, dummy) | |
| 3467 continue; | |
| 3468 } | |
| 3469 | |
| 3470 /* Fortran parsing */ | |
| 3471 | |
| 3472 bool tail PP ((char *cp)); | |
| 3473 bool | |
| 3474 tail (cp) | |
| 3475 char *cp; | |
| 3476 { | |
| 3477 register int len = 0; | |
| 3478 | |
| 3479 while (*cp && lowcase(*cp) == lowcase(dbp[len])) | |
| 3480 cp++, len++; | |
| 3481 if (*cp == '\0' && !intoken(dbp[len])) | |
| 3482 { | |
| 3483 dbp += len; | |
| 3484 return TRUE; | |
| 3485 } | |
| 3486 return FALSE; | |
| 3487 } | |
| 3488 | |
| 3489 void | |
| 3490 takeprec () | |
| 3491 { | |
| 3492 dbp = skip_spaces (dbp); | |
| 3493 if (*dbp != '*') | |
| 3494 return; | |
| 3495 dbp++; | |
| 3496 dbp = skip_spaces (dbp); | |
| 3497 if (strneq (dbp, "(*)", 3)) | |
| 3498 { | |
| 3499 dbp += 3; | |
| 3500 return; | |
| 3501 } | |
| 3502 if (!isdigit (*dbp)) | |
| 3503 { | |
| 3504 --dbp; /* force failure */ | |
| 3505 return; | |
| 3506 } | |
| 3507 do | |
| 3508 dbp++; | |
| 3509 while (isdigit (*dbp)); | |
| 3510 } | |
| 3511 | |
| 3512 void getit PP ((FILE *inf)); | |
| 3513 void | |
| 3514 getit (inf) | |
| 3515 FILE *inf; | |
| 3516 { | |
| 3517 register char *cp; | |
| 3518 | |
| 3519 dbp = skip_spaces (dbp); | |
| 3520 if (*dbp == '\0') | |
| 3521 { | |
| 3522 lineno++; | |
| 3523 linecharno = charno; | |
| 3524 charno += readline (&lb, inf); | |
| 3525 dbp = lb.buffer; | |
| 3526 if (dbp[5] != '&') | |
| 3527 return; | |
| 3528 dbp += 6; | |
| 3529 dbp = skip_spaces (dbp); | |
| 3530 } | |
| 3531 if (!isalpha (*dbp) | |
| 3532 && *dbp != '_' | |
| 3533 && *dbp != '$') | |
| 3534 return; | |
| 3535 for (cp = dbp + 1; *cp && intoken (*cp); cp++) | |
| 3536 continue; | |
| 3537 pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE, | |
| 3538 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3539 } | |
| 3540 | |
| 3541 | |
| 3542 void | |
| 3543 Fortran_functions (inf) | |
| 3544 FILE *inf; | |
| 3545 { | |
| 3546 LOOP_ON_INPUT_LINES (inf, lb, dbp) | |
| 3547 { | |
| 3548 if (*dbp == '%') | |
| 3549 dbp++; /* Ratfor escape to fortran */ | |
| 3550 dbp = skip_spaces (dbp); | |
| 3551 if (*dbp == '\0') | |
| 3552 continue; | |
| 3553 switch (lowcase (*dbp)) | |
| 3554 { | |
| 3555 case 'i': | |
| 3556 if (tail ("integer")) | |
| 3557 takeprec (); | |
| 3558 break; | |
| 3559 case 'r': | |
| 3560 if (tail ("real")) | |
| 3561 takeprec (); | |
| 3562 break; | |
| 3563 case 'l': | |
| 3564 if (tail ("logical")) | |
| 3565 takeprec (); | |
| 3566 break; | |
| 3567 case 'c': | |
| 3568 if (tail ("complex") || tail ("character")) | |
| 3569 takeprec (); | |
| 3570 break; | |
| 3571 case 'd': | |
| 3572 if (tail ("double")) | |
| 3573 { | |
| 3574 dbp = skip_spaces (dbp); | |
| 3575 if (*dbp == '\0') | |
| 3576 continue; | |
| 3577 if (tail ("precision")) | |
| 3578 break; | |
| 3579 continue; | |
| 3580 } | |
| 3581 break; | |
| 3582 } | |
| 3583 dbp = skip_spaces (dbp); | |
| 3584 if (*dbp == '\0') | |
| 3585 continue; | |
| 3586 switch (lowcase (*dbp)) | |
| 3587 { | |
| 3588 case 'f': | |
| 3589 if (tail ("function")) | |
| 3590 getit (inf); | |
| 3591 continue; | |
| 3592 case 's': | |
| 3593 if (tail ("subroutine")) | |
| 3594 getit (inf); | |
| 3595 continue; | |
| 3596 case 'e': | |
| 3597 if (tail ("entry")) | |
| 3598 getit (inf); | |
| 3599 continue; | |
| 3600 case 'p': | |
| 3601 if (tail ("program")) | |
| 3602 { | |
| 3603 getit (inf); | |
| 3604 continue; | |
| 3605 } | |
| 3606 if (tail ("procedure")) | |
| 3607 getit (inf); | |
| 3608 continue; | |
| 3609 } | |
| 3610 } | |
| 3611 } | |
| 3612 | |
| 3613 /* | |
| 3614 * Bob Weiner, Motorola Inc., 4/3/94 | |
| 3615 * Unix and microcontroller assembly tag handling | |
| 3616 * look for '^[a-zA-Z_.$][a-zA_Z0-9_.$]*[: ^I^J]' | |
| 3617 */ | |
| 3618 void | |
| 438 | 3619 Asm_labels (FILE *inf) |
| 428 | 3620 { |
| 3621 register char *cp; | |
| 3622 | |
| 3623 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 3624 { | |
| 3625 /* If first char is alphabetic or one of [_.$], test for colon | |
| 3626 following identifier. */ | |
| 3627 if (isalpha (*cp) || *cp == '_' || *cp == '.' || *cp == '$') | |
| 3628 { | |
| 3629 /* Read past label. */ | |
| 3630 cp++; | |
| 3631 while (isalnum (*cp) || *cp == '_' || *cp == '.' || *cp == '$') | |
| 3632 cp++; | |
| 3633 if (*cp == ':' || isspace (*cp)) | |
| 3634 { | |
| 3635 /* Found end of label, so copy it and add it to the table. */ | |
| 3636 pfnote ((CTAGS) ? savenstr(lb.buffer, cp-lb.buffer) : NULL, TRUE, | |
| 3637 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3638 } | |
| 3639 } | |
| 3640 } | |
| 3641 } | |
| 3642 | |
| 3643 /* | |
| 3644 * Perl support by Bart Robinson <lomew@cs.utah.edu> | |
| 3645 * enhanced by Michael Ernst <mernst@alum.mit.edu> | |
| 3646 * Perl sub names: look for /^sub[ \t\n]+[^ \t\n{]+/ | |
| 3647 * Perl variable names: /^(my|local).../ | |
| 3648 */ | |
| 3649 void | |
| 3650 Perl_functions (inf) | |
| 3651 FILE *inf; | |
| 3652 { | |
| 3653 register char *cp; | |
| 3654 | |
| 3655 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 3656 { | |
| 3657 if (*cp++ == 's' | |
| 3658 && *cp++ == 'u' | |
| 3659 && *cp++ == 'b' && isspace (*cp++)) | |
| 3660 { | |
| 3661 cp = skip_spaces (cp); | |
| 3662 if (*cp != '\0') | |
| 3663 { | |
| 3664 while (*cp != '\0' | |
| 3665 && !isspace (*cp) && *cp != '{' && *cp != '(') | |
| 3666 cp++; | |
| 3667 pfnote ((CTAGS) ? savenstr(lb.buffer, cp-lb.buffer) : NULL, TRUE, | |
| 3668 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3669 } | |
| 3670 } | |
| 3671 else if (globals /* only if tagging global vars is enabled */ | |
| 3672 && ((cp = lb.buffer, | |
| 3673 *cp++ == 'm' | |
| 3674 && *cp++ == 'y') | |
| 3675 || (cp = lb.buffer, | |
| 3676 *cp++ == 'l' | |
| 3677 && *cp++ == 'o' | |
| 3678 && *cp++ == 'c' | |
| 3679 && *cp++ == 'a' | |
| 3680 && *cp++ == 'l')) | |
| 3681 && (*cp == '(' || isspace (*cp))) | |
| 3682 { | |
| 3683 /* After "my" or "local", but before any following paren or space. */ | |
| 3684 char *varname = NULL; | |
| 3685 | |
| 3686 cp = skip_spaces (cp); | |
| 3687 if (*cp == '$' || *cp == '@' || *cp == '%') | |
| 3688 { | |
| 3689 char* varstart = ++cp; | |
| 3690 while (isalnum (*cp) || *cp == '_') | |
| 3691 cp++; | |
| 3692 varname = savenstr (varstart, cp-varstart); | |
| 3693 } | |
| 3694 else | |
| 3695 { | |
| 3696 /* Should be examining a variable list at this point; | |
| 3697 could insist on seeing an open parenthesis. */ | |
| 3698 while (*cp != '\0' && *cp != ';' && *cp != '=' && *cp != ')') | |
| 3699 cp++; | |
| 3700 } | |
| 3701 | |
| 3702 /* Perhaps I should back cp up one character, so the TAGS table | |
| 3703 doesn't mention (and so depend upon) the following char. */ | |
| 3704 pfnote ((CTAGS) ? savenstr (lb.buffer, cp-lb.buffer) : varname, | |
| 3705 FALSE, lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3706 } | |
| 3707 } | |
| 3708 } | |
| 3709 | |
| 3710 /* | |
| 3711 * Python support by Eric S. Raymond <esr@thyrsus.com> | |
| 3712 * Look for /^def[ \t\n]+[^ \t\n(:]+/ or /^class[ \t\n]+[^ \t\n(:]+/ | |
| 3713 */ | |
| 3714 void | |
| 3715 Python_functions (inf) | |
| 3716 FILE *inf; | |
| 3717 { | |
| 3718 register char *cp; | |
| 3719 | |
| 3720 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 3721 { | |
| 3722 if (*cp++ == 'd' | |
| 3723 && *cp++ == 'e' | |
| 3724 && *cp++ == 'f' && isspace (*cp++)) | |
| 3725 { | |
| 3726 cp = skip_spaces (cp); | |
| 3727 while (*cp != '\0' && !isspace (*cp) && *cp != '(' && *cp != ':') | |
| 3728 cp++; | |
| 3729 pfnote ((char *) NULL, TRUE, | |
| 3730 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3731 } | |
| 3732 | |
| 3733 cp = lb.buffer; | |
| 3734 if (*cp++ == 'c' | |
| 3735 && *cp++ == 'l' | |
| 3736 && *cp++ == 'a' | |
| 3737 && *cp++ == 's' | |
| 3738 && *cp++ == 's' && isspace (*cp++)) | |
| 3739 { | |
| 3740 cp = skip_spaces (cp); | |
| 3741 while (*cp != '\0' && !isspace (*cp) && *cp != '(' && *cp != ':') | |
| 3742 cp++; | |
| 3743 pfnote ((char *) NULL, TRUE, | |
| 3744 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 3745 } | |
| 3746 } | |
| 3747 } | |
| 3748 | |
| 3749 /* Idea by Corny de Souza | |
| 3750 * Cobol tag functions | |
| 3751 * We could look for anything that could be a paragraph name. | |
| 3752 * i.e. anything that starts in column 8 is one word and ends in a full stop. | |
| 3753 */ | |
| 3754 void | |
| 3755 Cobol_paragraphs (inf) | |
| 3756 FILE *inf; | |
| 3757 { | |
| 3758 register char *bp, *ep; | |
| 3759 | |
| 3760 LOOP_ON_INPUT_LINES (inf, lb, bp) | |
| 3761 { | |
| 3762 if (lb.len < 9) | |
| 3763 continue; | |
| 3764 bp += 8; | |
| 3765 | |
| 3766 /* If eoln, compiler option or comment ignore whole line. */ | |
| 3767 if (bp[-1] != ' ' || !isalnum (bp[0])) | |
| 3768 continue; | |
| 3769 | |
| 3770 for (ep = bp; isalnum (*ep) || *ep == '-'; ep++) | |
| 3771 continue; | |
| 3772 if (*ep++ == '.') | |
| 3773 pfnote ((CTAGS) ? savenstr (bp, ep-bp) : NULL, TRUE, | |
| 3774 lb.buffer, ep - lb.buffer + 1, lineno, linecharno); | |
| 3775 } | |
| 3776 } | |
| 3777 | |
| 3778 /* Added by Mosur Mohan, 4/22/88 */ | |
| 3779 /* Pascal parsing */ | |
| 3780 | |
| 3781 /* | |
| 3782 * Locates tags for procedures & functions. Doesn't do any type- or | |
| 3783 * var-definitions. It does look for the keyword "extern" or | |
| 3784 * "forward" immediately following the procedure statement; if found, | |
| 3785 * the tag is skipped. | |
| 3786 */ | |
| 3787 void | |
| 3788 Pascal_functions (inf) | |
| 3789 FILE *inf; | |
| 3790 { | |
| 3791 linebuffer tline; /* mostly copied from C_entries */ | |
| 3792 long save_lcno; | |
| 3793 int save_lineno, save_len; | |
| 3794 char c, *cp, *namebuf; | |
| 3795 | |
| 3796 bool /* each of these flags is TRUE iff: */ | |
| 3797 incomment, /* point is inside a comment */ | |
| 3798 inquote, /* point is inside '..' string */ | |
| 3799 get_tagname, /* point is after PROCEDURE/FUNCTION | |
| 3800 keyword, so next item = potential tag */ | |
| 3801 found_tag, /* point is after a potential tag */ | |
| 3802 inparms, /* point is within parameter-list */ | |
| 3803 verify_tag; /* point has passed the parm-list, so the | |
| 3804 next token will determine whether this | |
| 3805 is a FORWARD/EXTERN to be ignored, or | |
| 3806 whether it is a real tag */ | |
| 3807 | |
| 3808 save_lcno = save_lineno = save_len = 0; /* keep compiler quiet */ | |
| 3809 namebuf = NULL; /* keep compiler quiet */ | |
| 3810 lineno = 0; | |
| 3811 charno = 0; | |
| 3812 dbp = lb.buffer; | |
| 3813 *dbp = '\0'; | |
| 3814 initbuffer (&tline); | |
| 3815 | |
| 3816 incomment = inquote = FALSE; | |
| 3817 found_tag = FALSE; /* have a proc name; check if extern */ | |
| 3818 get_tagname = FALSE; /* have found "procedure" keyword */ | |
| 3819 inparms = FALSE; /* found '(' after "proc" */ | |
| 3820 verify_tag = FALSE; /* check if "extern" is ahead */ | |
| 3821 | |
| 3822 | |
| 3823 while (!feof (inf)) /* long main loop to get next char */ | |
| 3824 { | |
| 3825 c = *dbp++; | |
| 3826 if (c == '\0') /* if end of line */ | |
| 3827 { | |
| 3828 lineno++; | |
| 3829 linecharno = charno; | |
| 3830 charno += readline (&lb, inf); | |
| 3831 dbp = lb.buffer; | |
| 3832 if (*dbp == '\0') | |
| 3833 continue; | |
| 3834 if (!((found_tag && verify_tag) | |
| 3835 || get_tagname)) | |
| 3836 c = *dbp++; /* only if don't need *dbp pointing | |
| 3837 to the beginning of the name of | |
| 3838 the procedure or function */ | |
| 3839 } | |
| 3840 if (incomment) | |
| 3841 { | |
| 3842 if (c == '}') /* within { } comments */ | |
| 3843 incomment = FALSE; | |
| 3844 else if (c == '*' && *dbp == ')') /* within (* *) comments */ | |
| 3845 { | |
| 3846 dbp++; | |
| 3847 incomment = FALSE; | |
| 3848 } | |
| 3849 continue; | |
| 3850 } | |
| 3851 else if (inquote) | |
| 3852 { | |
| 3853 if (c == '\'') | |
| 3854 inquote = FALSE; | |
| 3855 continue; | |
| 3856 } | |
| 3857 else | |
| 3858 switch (c) | |
| 3859 { | |
| 3860 case '\'': | |
| 3861 inquote = TRUE; /* found first quote */ | |
| 3862 continue; | |
| 3863 case '{': /* found open { comment */ | |
| 3864 incomment = TRUE; | |
| 3865 continue; | |
| 3866 case '(': | |
| 3867 if (*dbp == '*') /* found open (* comment */ | |
| 3868 { | |
| 3869 incomment = TRUE; | |
| 3870 dbp++; | |
| 3871 } | |
| 3872 else if (found_tag) /* found '(' after tag, i.e., parm-list */ | |
| 3873 inparms = TRUE; | |
| 3874 continue; | |
| 3875 case ')': /* end of parms list */ | |
| 3876 if (inparms) | |
| 3877 inparms = FALSE; | |
| 3878 continue; | |
| 3879 case ';': | |
| 3880 if (found_tag && !inparms) /* end of proc or fn stmt */ | |
| 3881 { | |
| 3882 verify_tag = TRUE; | |
| 3883 break; | |
| 3884 } | |
| 3885 continue; | |
| 3886 } | |
| 3887 if (found_tag && verify_tag && (*dbp != ' ')) | |
| 3888 { | |
| 3889 /* check if this is an "extern" declaration */ | |
| 3890 if (*dbp == '\0') | |
| 3891 continue; | |
| 3892 if (lowcase (*dbp == 'e')) | |
| 3893 { | |
| 3894 if (tail ("extern")) /* superfluous, really! */ | |
| 3895 { | |
| 3896 found_tag = FALSE; | |
| 3897 verify_tag = FALSE; | |
| 3898 } | |
| 3899 } | |
| 3900 else if (lowcase (*dbp) == 'f') | |
| 3901 { | |
| 3902 if (tail ("forward")) /* check for forward reference */ | |
| 3903 { | |
| 3904 found_tag = FALSE; | |
| 3905 verify_tag = FALSE; | |
| 3906 } | |
| 3907 } | |
| 3908 if (found_tag && verify_tag) /* not external proc, so make tag */ | |
| 3909 { | |
| 3910 found_tag = FALSE; | |
| 3911 verify_tag = FALSE; | |
| 3912 pfnote (namebuf, TRUE, | |
| 3913 tline.buffer, save_len, save_lineno, save_lcno); | |
| 3914 continue; | |
| 3915 } | |
| 3916 } | |
| 3917 if (get_tagname) /* grab name of proc or fn */ | |
| 3918 { | |
| 3919 if (*dbp == '\0') | |
| 3920 continue; | |
| 3921 | |
| 3922 /* save all values for later tagging */ | |
| 3923 grow_linebuffer (&tline, lb.len + 1); | |
| 3924 strcpy (tline.buffer, lb.buffer); | |
| 3925 save_lineno = lineno; | |
| 3926 save_lcno = linecharno; | |
| 3927 | |
| 3928 /* grab block name */ | |
| 3929 for (cp = dbp + 1; *cp != '\0' && !endtoken (*cp); cp++) | |
| 3930 continue; | |
| 3931 namebuf = (CTAGS) ? savenstr (dbp, cp-dbp) : NULL; | |
| 3932 dbp = cp; /* set dbp to e-o-token */ | |
| 3933 save_len = dbp - lb.buffer + 1; | |
| 3934 get_tagname = FALSE; | |
| 3935 found_tag = TRUE; | |
| 3936 continue; | |
| 3937 | |
| 3938 /* and proceed to check for "extern" */ | |
| 3939 } | |
| 3940 else if (!incomment && !inquote && !found_tag) | |
| 3941 { | |
| 3942 /* check for proc/fn keywords */ | |
| 3943 switch (lowcase (c)) | |
| 3944 { | |
| 3945 case 'p': | |
| 3946 if (tail ("rocedure")) /* c = 'p', dbp has advanced */ | |
| 3947 get_tagname = TRUE; | |
| 3948 continue; | |
| 3949 case 'f': | |
| 3950 if (tail ("unction")) | |
| 3951 get_tagname = TRUE; | |
| 3952 continue; | |
| 3953 } | |
| 3954 } | |
| 3955 } /* while not eof */ | |
| 3956 | |
| 3957 free (tline.buffer); | |
| 3958 } | |
| 3959 | |
| 3960 /* | |
| 3961 * lisp tag functions | |
| 3962 * look for (def or (DEF, quote or QUOTE | |
| 3963 */ | |
| 3964 int L_isdef PP ((char *strp)); | |
| 3965 int | |
| 3966 L_isdef (strp) | |
| 3967 register char *strp; | |
| 3968 { | |
| 3969 return ((strp[1] == 'd' || strp[1] == 'D') | |
| 3970 && (strp[2] == 'e' || strp[2] == 'E') | |
| 3971 && (strp[3] == 'f' || strp[3] == 'F')); | |
| 3972 } | |
| 3973 int L_isquote PP ((char *strp)); | |
| 3974 int | |
| 3975 L_isquote (strp) | |
| 3976 register char *strp; | |
| 3977 { | |
| 3978 return ((*++strp == 'q' || *strp == 'Q') | |
| 3979 && (*++strp == 'u' || *strp == 'U') | |
| 3980 && (*++strp == 'o' || *strp == 'O') | |
| 3981 && (*++strp == 't' || *strp == 'T') | |
| 3982 && (*++strp == 'e' || *strp == 'E') | |
| 3983 && isspace (*++strp)); | |
| 3984 } | |
| 3985 | |
| 3986 void L_getit PP ((void)); | |
| 3987 void | |
| 3988 L_getit () | |
| 3989 { | |
| 3990 register char *cp; | |
| 3991 | |
| 3992 if (*dbp == '\'') /* Skip prefix quote */ | |
| 3993 dbp++; | |
| 3994 else if (*dbp == '(') | |
| 3995 { | |
| 3996 if (L_isquote (dbp)) | |
| 3997 dbp += 7; /* Skip "(quote " */ | |
| 3998 else | |
| 3999 dbp += 1; /* Skip "(" before name in (defstruct (foo)) */ | |
| 4000 dbp = skip_spaces (dbp); | |
| 4001 } | |
| 4002 | |
| 4003 for (cp = dbp /*+1*/; | |
| 4004 *cp != '\0' && *cp != '(' && *cp != ' ' && *cp != ')'; | |
| 4005 cp++) | |
| 4006 continue; | |
| 4007 if (cp == dbp) | |
| 4008 return; | |
| 4009 | |
| 4010 pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE, | |
| 4011 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 4012 } | |
| 4013 | |
| 4014 void | |
| 4015 Lisp_functions (inf) | |
| 4016 FILE *inf; | |
| 4017 { | |
| 4018 LOOP_ON_INPUT_LINES (inf, lb, dbp) | |
| 4019 { | |
| 4020 if (dbp[0] == '(') | |
| 4021 { | |
| 4022 if (L_isdef (dbp)) | |
| 4023 { | |
| 4024 dbp = skip_non_spaces (dbp); | |
| 4025 dbp = skip_spaces (dbp); | |
| 4026 L_getit (); | |
| 4027 } | |
| 4028 else | |
| 4029 { | |
| 4030 /* Check for (foo::defmumble name-defined ... */ | |
| 4031 do | |
| 4032 dbp++; | |
| 4033 while (*dbp != '\0' && !isspace (*dbp) | |
| 4034 && *dbp != ':' && *dbp != '(' && *dbp != ')'); | |
| 4035 if (*dbp == ':') | |
| 4036 { | |
| 4037 do | |
| 4038 dbp++; | |
| 4039 while (*dbp == ':'); | |
| 4040 | |
| 4041 if (L_isdef (dbp - 1)) | |
| 4042 { | |
| 4043 dbp = skip_non_spaces (dbp); | |
| 4044 dbp = skip_spaces (dbp); | |
| 4045 L_getit (); | |
| 4046 } | |
| 4047 } | |
| 4048 } | |
| 4049 } | |
| 4050 } | |
| 4051 } | |
| 4052 | |
| 4053 /* | |
| 4054 * Postscript tag functions | |
| 4055 * Just look for lines where the first character is '/' | |
| 4056 * Richard Mlynarik <mly@adoc.xerox.com> | |
| 4057 */ | |
| 4058 void | |
| 4059 Postscript_functions (inf) | |
| 4060 FILE *inf; | |
| 4061 { | |
| 4062 register char *bp, *ep; | |
| 4063 | |
| 4064 LOOP_ON_INPUT_LINES (inf, lb, bp) | |
| 4065 { | |
| 4066 if (bp[0] == '/') | |
| 4067 { | |
| 4068 for (ep = bp+1; | |
| 4069 *ep != '\0' && *ep != ' ' && *ep != '{'; | |
| 4070 ep++) | |
| 4071 continue; | |
| 4072 pfnote ((CTAGS) ? savenstr (bp, ep-bp) : NULL, TRUE, | |
| 4073 lb.buffer, ep - lb.buffer + 1, lineno, linecharno); | |
| 4074 } | |
| 4075 } | |
| 4076 } | |
| 4077 | |
| 4078 | |
| 4079 /* | |
| 4080 * Scheme tag functions | |
| 4081 * look for (def... xyzzy | |
| 4082 * look for (def... (xyzzy | |
| 4083 * look for (def ... ((...(xyzzy .... | |
| 4084 * look for (set! xyzzy | |
| 4085 */ | |
| 4086 | |
| 4087 void get_scheme PP ((void)); | |
| 4088 | |
| 4089 void | |
| 4090 Scheme_functions (inf) | |
| 4091 FILE *inf; | |
| 4092 { | |
| 4093 LOOP_ON_INPUT_LINES (inf, lb, dbp) | |
| 4094 { | |
| 4095 if (dbp[0] == '(' | |
| 4096 && (dbp[1] == 'D' || dbp[1] == 'd') | |
| 4097 && (dbp[2] == 'E' || dbp[2] == 'e') | |
| 4098 && (dbp[3] == 'F' || dbp[3] == 'f')) | |
| 4099 { | |
| 4100 dbp = skip_non_spaces (dbp); | |
| 4101 /* Skip over open parens and white space */ | |
| 4102 while (isspace (*dbp) || *dbp == '(') | |
| 4103 dbp++; | |
| 4104 get_scheme (); | |
| 4105 } | |
| 4106 if (dbp[0] == '(' | |
| 4107 && (dbp[1] == 'S' || dbp[1] == 's') | |
| 4108 && (dbp[2] == 'E' || dbp[2] == 'e') | |
| 4109 && (dbp[3] == 'T' || dbp[3] == 't') | |
| 4110 && (dbp[4] == '!' || dbp[4] == '!') | |
| 4111 && (isspace (dbp[5]))) | |
| 4112 { | |
| 4113 dbp = skip_non_spaces (dbp); | |
| 4114 dbp = skip_spaces (dbp); | |
| 4115 get_scheme (); | |
| 4116 } | |
| 4117 } | |
| 4118 } | |
| 4119 | |
| 4120 void | |
| 4121 get_scheme () | |
| 4122 { | |
| 4123 register char *cp; | |
| 4124 | |
| 4125 if (*dbp == '\0') | |
| 4126 return; | |
| 4127 /* Go till you get to white space or a syntactic break */ | |
| 4128 for (cp = dbp + 1; | |
| 4129 *cp != '\0' && *cp != '(' && *cp != ')' && !isspace (*cp); | |
| 4130 cp++) | |
| 4131 continue; | |
| 4132 pfnote ((CTAGS) ? savenstr (dbp, cp-dbp) : NULL, TRUE, | |
| 4133 lb.buffer, cp - lb.buffer + 1, lineno, linecharno); | |
| 4134 } | |
| 4135 | |
| 4136 /* Find tags in TeX and LaTeX input files. */ | |
| 4137 | |
| 4138 /* TEX_toktab is a table of TeX control sequences that define tags. | |
| 4139 Each TEX_tabent records one such control sequence. | |
| 4140 CONVERT THIS TO USE THE Stab TYPE!! */ | |
| 4141 struct TEX_tabent | |
| 4142 { | |
| 4143 char *name; | |
| 4144 int len; | |
| 4145 }; | |
| 4146 | |
| 4147 struct TEX_tabent *TEX_toktab = NULL; /* Table with tag tokens */ | |
| 4148 | |
| 4149 /* Default set of control sequences to put into TEX_toktab. | |
| 4150 The value of environment var TEXTAGS is prepended to this. */ | |
| 4151 | |
| 4152 char *TEX_defenv = "\ | |
| 4153 :chapter:section:subsection:subsubsection:eqno:label:ref:cite:bibitem\ | |
| 4154 :part:appendix:entry:index"; | |
| 4155 | |
| 4156 void TEX_mode PP ((FILE *inf)); | |
| 4157 struct TEX_tabent *TEX_decode_env PP ((char *evarname, char *defenv)); | |
| 4158 int TEX_Token PP ((char *cp)); | |
| 4159 | |
| 4160 char TEX_esc = '\\'; | |
| 4161 char TEX_opgrp = '{'; | |
| 4162 char TEX_clgrp = '}'; | |
| 4163 | |
| 4164 /* | |
| 4165 * TeX/LaTeX scanning loop. | |
| 4166 */ | |
| 4167 void | |
| 4168 TeX_functions (inf) | |
| 4169 FILE *inf; | |
| 4170 { | |
| 4171 char *cp, *lasthit; | |
| 4172 register int i; | |
| 4173 | |
| 4174 /* Select either \ or ! as escape character. */ | |
| 4175 TEX_mode (inf); | |
| 4176 | |
| 4177 /* Initialize token table once from environment. */ | |
| 4178 if (!TEX_toktab) | |
| 4179 TEX_toktab = TEX_decode_env ("TEXTAGS", TEX_defenv); | |
| 4180 | |
| 4181 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 4182 { | |
| 4183 lasthit = cp; | |
| 4184 /* Look at each esc in line. */ | |
| 4185 while ((cp = etags_strchr (cp, TEX_esc)) != NULL) | |
| 4186 { | |
| 4187 if (*++cp == '\0') | |
| 4188 break; | |
| 4189 linecharno += cp - lasthit; | |
| 4190 lasthit = cp; | |
| 4191 i = TEX_Token (lasthit); | |
| 4192 if (i >= 0) | |
| 4193 { | |
| 4194 /* We seem to include the TeX command in the tag name. | |
| 4195 register char *p; | |
| 4196 for (p = lasthit + TEX_toktab[i].len; | |
| 4197 *p != '\0' && *p != TEX_clgrp; | |
| 4198 p++) | |
| 4199 continue; */ | |
| 4200 pfnote (/*savenstr (lasthit, p-lasthit)*/ (char *)NULL, TRUE, | |
| 4201 lb.buffer, lb.len, lineno, linecharno); | |
| 4202 break; /* We only tag a line once */ | |
| 4203 } | |
| 4204 } | |
| 4205 } | |
| 4206 } | |
| 4207 | |
| 4208 #define TEX_LESC '\\' | |
| 4209 #define TEX_SESC '!' | |
| 4210 #define TEX_cmt '%' | |
| 4211 | |
| 4212 /* Figure out whether TeX's escapechar is '\\' or '!' and set grouping | |
| 4213 chars accordingly. */ | |
| 4214 void | |
| 4215 TEX_mode (inf) | |
| 4216 FILE *inf; | |
| 4217 { | |
| 4218 int c; | |
| 4219 | |
| 4220 while ((c = getc (inf)) != EOF) | |
| 4221 { | |
| 4222 /* Skip to next line if we hit the TeX comment char. */ | |
| 4223 if (c == TEX_cmt) | |
| 4224 while (c != '\n') | |
| 4225 c = getc (inf); | |
| 4226 else if (c == TEX_LESC || c == TEX_SESC ) | |
| 4227 break; | |
| 4228 } | |
| 4229 | |
| 4230 if (c == TEX_LESC) | |
| 4231 { | |
| 4232 TEX_esc = TEX_LESC; | |
| 4233 TEX_opgrp = '{'; | |
| 4234 TEX_clgrp = '}'; | |
| 4235 } | |
| 4236 else | |
| 4237 { | |
| 4238 TEX_esc = TEX_SESC; | |
| 4239 TEX_opgrp = '<'; | |
| 4240 TEX_clgrp = '>'; | |
| 4241 } | |
| 4242 rewind (inf); | |
| 4243 } | |
| 4244 | |
| 4245 /* Read environment and prepend it to the default string. | |
| 4246 Build token table. */ | |
| 4247 struct TEX_tabent * | |
| 4248 TEX_decode_env (evarname, defenv) | |
| 4249 char *evarname; | |
| 4250 char *defenv; | |
| 4251 { | |
| 4252 register char *env, *p; | |
| 4253 | |
| 4254 struct TEX_tabent *tab; | |
| 4255 int size, i; | |
| 4256 | |
| 4257 /* Append default string to environment. */ | |
| 4258 env = getenv (evarname); | |
| 4259 if (!env) | |
| 4260 env = defenv; | |
| 4261 else | |
| 4262 { | |
| 4263 char *oldenv = env; | |
| 4264 env = concat (oldenv, defenv, ""); | |
| 4265 free (oldenv); | |
| 4266 } | |
| 4267 | |
| 4268 /* Allocate a token table */ | |
| 4269 for (size = 1, p = env; p;) | |
| 4270 if ((p = etags_strchr (p, ':')) && *++p != '\0') | |
| 4271 size++; | |
| 4272 /* Add 1 to leave room for null terminator. */ | |
| 4273 tab = xnew (size + 1, struct TEX_tabent); | |
| 4274 | |
| 4275 /* Unpack environment string into token table. Be careful about */ | |
| 4276 /* zero-length strings (leading ':', "::" and trailing ':') */ | |
| 4277 for (i = 0; *env;) | |
| 4278 { | |
| 4279 p = etags_strchr (env, ':'); | |
| 4280 if (!p) /* End of environment string. */ | |
| 4281 p = env + strlen (env); | |
| 4282 if (p - env > 0) | |
| 4283 { /* Only non-zero strings. */ | |
| 4284 tab[i].name = savenstr (env, p - env); | |
| 4285 tab[i].len = strlen (tab[i].name); | |
| 4286 i++; | |
| 4287 } | |
| 4288 if (*p) | |
| 4289 env = p + 1; | |
| 4290 else | |
| 4291 { | |
| 4292 tab[i].name = NULL; /* Mark end of table. */ | |
| 4293 tab[i].len = 0; | |
| 4294 break; | |
| 4295 } | |
| 4296 } | |
| 4297 return tab; | |
| 4298 } | |
| 4299 | |
| 4300 /* If the text at CP matches one of the tag-defining TeX command names, | |
| 4301 return the pointer to the first occurrence of that command in TEX_toktab. | |
| 4302 Otherwise return -1. | |
| 4303 Keep the capital `T' in `token' for dumb truncating compilers | |
| 4304 (this distinguishes it from `TEX_toktab' */ | |
| 4305 int | |
| 4306 TEX_Token (cp) | |
| 4307 char *cp; | |
| 4308 { | |
| 4309 int i; | |
| 4310 | |
| 4311 for (i = 0; TEX_toktab[i].len > 0; i++) | |
| 4312 if (strneq (TEX_toktab[i].name, cp, TEX_toktab[i].len)) | |
| 4313 return i; | |
| 4314 return -1; | |
| 4315 } | |
| 4316 | |
| 4317 /* | |
| 4318 * Prolog support (rewritten) by Anders Lindgren, Mar. 96 | |
| 4319 * | |
| 4320 * Assumes that the predicate starts at column 0. | |
| 4321 * Only the first clause of a predicate is added. | |
| 4322 */ | |
| 4323 int prolog_pred PP ((char *s, char *last)); | |
| 4324 void prolog_skip_comment PP ((linebuffer *plb, FILE *inf)); | |
| 4325 int prolog_atom PP ((char *s, int pos)); | |
| 4326 | |
| 4327 void | |
| 4328 Prolog_functions (inf) | |
| 4329 FILE *inf; | |
| 4330 { | |
| 4331 char *cp, *last; | |
| 4332 int len; | |
| 4333 int allocated; | |
| 4334 | |
| 4335 allocated = 0; | |
| 4336 len = 0; | |
| 4337 last = NULL; | |
| 4338 | |
| 4339 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 4340 { | |
| 4341 if (cp[0] == '\0') /* Empty line */ | |
| 4342 continue; | |
| 4343 else if (isspace (cp[0])) /* Not a predicate */ | |
| 4344 continue; | |
| 4345 else if (cp[0] == '/' && cp[1] == '*') /* comment. */ | |
| 4346 prolog_skip_comment (&lb, inf); | |
| 4347 else if ((len = prolog_pred (cp, last)) > 0) | |
| 4348 { | |
| 4349 /* Predicate. Store the function name so that we only | |
| 4350 generate a tag for the first clause. */ | |
| 4351 if (last == NULL) | |
| 4352 last = xnew(len + 1, char); | |
| 4353 else if (len + 1 > allocated) | |
| 4354 last = xrnew (last, len + 1, char); | |
| 4355 allocated = len + 1; | |
| 4356 strncpy (last, cp, len); | |
| 4357 last[len] = '\0'; | |
| 4358 } | |
| 4359 } | |
| 4360 } | |
| 4361 | |
| 4362 | |
| 4363 void | |
| 4364 prolog_skip_comment (plb, inf) | |
| 4365 linebuffer *plb; | |
| 4366 FILE *inf; | |
| 4367 { | |
| 4368 char *cp; | |
| 4369 | |
| 4370 do | |
| 4371 { | |
| 4372 for (cp = plb->buffer; *cp != '\0'; cp++) | |
| 4373 if (cp[0] == '*' && cp[1] == '/') | |
| 4374 return; | |
| 4375 lineno++; | |
| 4376 linecharno += readline (plb, inf); | |
| 4377 } | |
| 4378 while (!feof(inf)); | |
| 4379 } | |
| 4380 | |
| 4381 /* | |
| 4382 * A predicate definition is added if it matches: | |
| 4383 * <beginning of line><Prolog Atom><whitespace>( | |
| 4384 * | |
| 4385 * It is added to the tags database if it doesn't match the | |
| 4386 * name of the previous clause header. | |
| 4387 * | |
| 4388 * Return the size of the name of the predicate, or 0 if no header | |
| 4389 * was found. | |
| 4390 */ | |
| 4391 int | |
| 4392 prolog_pred (s, last) | |
| 4393 char *s; | |
| 4394 char *last; /* Name of last clause. */ | |
| 4395 { | |
| 4396 int pos; | |
| 4397 int len; | |
| 4398 | |
| 4399 pos = prolog_atom (s, 0); | |
| 4400 if (pos < 1) | |
| 4401 return 0; | |
| 4402 | |
| 4403 len = pos; | |
| 4404 pos = skip_spaces (s + pos) - s; | |
| 4405 | |
| 4406 if ((s[pos] == '(') || (s[pos] == '.')) | |
| 4407 { | |
| 4408 if (s[pos] == '(') | |
| 4409 pos++; | |
| 4410 | |
| 4411 /* Save only the first clause. */ | |
| 4412 if (last == NULL | |
| 647 | 4413 || len != (int) strlen (last) |
| 428 | 4414 || !strneq (s, last, len)) |
| 4415 { | |
| 4416 pfnote ((CTAGS) ? savenstr (s, len) : NULL, TRUE, | |
| 4417 s, pos, lineno, linecharno); | |
| 4418 return len; | |
| 4419 } | |
| 4420 } | |
| 4421 return 0; | |
| 4422 } | |
| 4423 | |
| 4424 /* | |
| 4425 * Consume a Prolog atom. | |
| 4426 * Return the number of bytes consumed, or -1 if there was an error. | |
| 4427 * | |
| 4428 * A prolog atom, in this context, could be one of: | |
| 4429 * - An alphanumeric sequence, starting with a lower case letter. | |
| 4430 * - A quoted arbitrary string. Single quotes can escape themselves. | |
| 4431 * Backslash quotes everything. | |
| 4432 */ | |
| 4433 int | |
| 4434 prolog_atom (s, pos) | |
| 4435 char *s; | |
| 4436 int pos; | |
| 4437 { | |
| 4438 int origpos; | |
| 4439 | |
| 4440 origpos = pos; | |
| 4441 | |
| 4442 if (islower(s[pos]) || (s[pos] == '_')) | |
| 4443 { | |
| 4444 /* The atom is unquoted. */ | |
| 4445 pos++; | |
| 4446 while (isalnum(s[pos]) || (s[pos] == '_')) | |
| 4447 { | |
| 4448 pos++; | |
| 4449 } | |
| 4450 return pos - origpos; | |
| 4451 } | |
| 4452 else if (s[pos] == '\'') | |
| 4453 { | |
| 4454 pos++; | |
| 4455 | |
| 4456 while (1) | |
| 4457 { | |
| 4458 if (s[pos] == '\'') | |
| 4459 { | |
| 4460 pos++; | |
| 4461 if (s[pos] != '\'') | |
| 4462 break; | |
| 4463 pos++; /* A double quote */ | |
| 4464 } | |
| 4465 else if (s[pos] == '\0') | |
| 4466 /* Multiline quoted atoms are ignored. */ | |
| 4467 return -1; | |
| 4468 else if (s[pos] == '\\') | |
| 4469 { | |
| 4470 if (s[pos+1] == '\0') | |
| 4471 return -1; | |
| 4472 pos += 2; | |
| 4473 } | |
| 4474 else | |
| 4475 pos++; | |
| 4476 } | |
| 4477 return pos - origpos; | |
| 4478 } | |
| 4479 else | |
| 4480 return -1; | |
| 4481 } | |
| 4482 | |
| 4483 /* | |
| 4484 * Support for Erlang -- Anders Lindgren, Feb 1996. | |
| 4485 * | |
| 4486 * Generates tags for functions, defines, and records. | |
| 4487 * | |
| 4488 * Assumes that Erlang functions start at column 0. | |
| 4489 */ | |
| 4490 int erlang_func PP ((char *s, char *last)); | |
| 4491 void erlang_attribute PP ((char *s)); | |
| 4492 int erlang_atom PP ((char *s, int pos)); | |
| 4493 | |
| 4494 void | |
| 4495 Erlang_functions (inf) | |
| 4496 FILE *inf; | |
| 4497 { | |
| 4498 char *cp, *last; | |
| 4499 int len; | |
| 4500 int allocated; | |
| 4501 | |
| 4502 allocated = 0; | |
| 4503 len = 0; | |
| 4504 last = NULL; | |
| 4505 | |
| 4506 LOOP_ON_INPUT_LINES (inf, lb, cp) | |
| 4507 { | |
| 4508 if (cp[0] == '\0') /* Empty line */ | |
| 4509 continue; | |
| 4510 else if (isspace (cp[0])) /* Not function nor attribute */ | |
| 4511 continue; | |
| 4512 else if (cp[0] == '%') /* comment */ | |
| 4513 continue; | |
| 4514 else if (cp[0] == '"') /* Sometimes, strings start in column one */ | |
| 4515 continue; | |
| 4516 else if (cp[0] == '-') /* attribute, e.g. "-define" */ | |
| 4517 { | |
| 4518 erlang_attribute (cp); | |
| 4519 last = NULL; | |
| 4520 } | |
| 4521 else if ((len = erlang_func (cp, last)) > 0) | |
| 4522 { | |
| 4523 /* | |
| 4524 * Function. Store the function name so that we only | |
| 4525 * generates a tag for the first clause. | |
| 4526 */ | |
| 4527 if (last == NULL) | |
| 4528 last = xnew (len + 1, char); | |
| 4529 else if (len + 1 > allocated) | |
| 4530 last = xrnew (last, len + 1, char); | |
| 4531 allocated = len + 1; | |
| 4532 strncpy (last, cp, len); | |
| 4533 last[len] = '\0'; | |
| 4534 } | |
| 4535 } | |
| 4536 } | |
| 4537 | |
| 4538 | |
| 4539 /* | |
| 4540 * A function definition is added if it matches: | |
| 4541 * <beginning of line><Erlang Atom><whitespace>( | |
| 4542 * | |
| 4543 * It is added to the tags database if it doesn't match the | |
| 4544 * name of the previous clause header. | |
| 4545 * | |
| 4546 * Return the size of the name of the function, or 0 if no function | |
| 4547 * was found. | |
| 4548 */ | |
| 4549 int | |
| 4550 erlang_func (s, last) | |
| 4551 char *s; | |
| 4552 char *last; /* Name of last clause. */ | |
| 4553 { | |
| 4554 int pos; | |
| 4555 int len; | |
| 4556 | |
| 4557 pos = erlang_atom (s, 0); | |
| 4558 if (pos < 1) | |
| 4559 return 0; | |
| 4560 | |
| 4561 len = pos; | |
| 4562 pos = skip_spaces (s + pos) - s; | |
| 4563 | |
| 4564 /* Save only the first clause. */ | |
| 4565 if (s[pos++] == '(' | |
| 4566 && (last == NULL | |
| 647 | 4567 || len != (int) strlen (last) |
| 428 | 4568 || !strneq (s, last, len))) |
| 4569 { | |
| 4570 pfnote ((CTAGS) ? savenstr (s, len) : NULL, TRUE, | |
| 4571 s, pos, lineno, linecharno); | |
| 4572 return len; | |
| 4573 } | |
| 4574 | |
| 4575 return 0; | |
| 4576 } | |
| 4577 | |
| 4578 | |
| 4579 /* | |
| 4580 * Handle attributes. Currently, tags are generated for defines | |
| 4581 * and records. | |
| 4582 * | |
| 4583 * They are on the form: | |
| 4584 * -define(foo, bar). | |
| 4585 * -define(Foo(M, N), M+N). | |
| 4586 * -record(graph, {vtab = notable, cyclic = true}). | |
| 4587 */ | |
| 4588 void | |
| 4589 erlang_attribute (s) | |
| 4590 char *s; | |
| 4591 { | |
| 4592 int pos; | |
| 4593 int len; | |
| 4594 | |
| 4595 if (strneq (s, "-define", 7) || strneq (s, "-record", 7)) | |
| 4596 { | |
| 4597 pos = skip_spaces (s + 7) - s; | |
| 4598 if (s[pos++] == '(') | |
| 4599 { | |
| 4600 pos = skip_spaces (s + pos) - s; | |
| 4601 len = erlang_atom (s, pos); | |
| 4602 if (len != 0) | |
| 4603 pfnote ((CTAGS) ? savenstr (& s[pos], len) : NULL, TRUE, | |
| 4604 s, pos + len, lineno, linecharno); | |
| 4605 } | |
| 4606 } | |
| 4607 return; | |
| 4608 } | |
| 4609 | |
| 4610 | |
| 4611 /* | |
| 4612 * Consume an Erlang atom (or variable). | |
| 4613 * Return the number of bytes consumed, or -1 if there was an error. | |
| 4614 */ | |
| 4615 int | |
| 4616 erlang_atom (s, pos) | |
| 4617 char *s; | |
| 4618 int pos; | |
| 4619 { | |
| 4620 int origpos; | |
| 4621 | |
| 4622 origpos = pos; | |
| 4623 | |
| 4624 if (isalpha (s[pos]) || s[pos] == '_') | |
| 4625 { | |
| 4626 /* The atom is unquoted. */ | |
| 4627 pos++; | |
| 4628 while (isalnum (s[pos]) || s[pos] == '_') | |
| 4629 pos++; | |
| 4630 return pos - origpos; | |
| 4631 } | |
| 4632 else if (s[pos] == '\'') | |
| 4633 { | |
| 4634 pos++; | |
| 4635 | |
| 4636 while (1) | |
| 4637 { | |
| 4638 if (s[pos] == '\'') | |
| 4639 { | |
| 4640 pos++; | |
| 4641 break; | |
| 4642 } | |
| 4643 else if (s[pos] == '\0') | |
| 4644 /* Multiline quoted atoms are ignored. */ | |
| 4645 return -1; | |
| 4646 else if (s[pos] == '\\') | |
| 4647 { | |
| 4648 if (s[pos+1] == '\0') | |
| 4649 return -1; | |
| 4650 pos += 2; | |
| 4651 } | |
| 4652 else | |
| 4653 pos++; | |
| 4654 } | |
| 4655 return pos - origpos; | |
| 4656 } | |
| 4657 else | |
| 4658 return -1; | |
| 4659 } | |
| 4660 | |
| 4661 #ifdef ETAGS_REGEXPS | |
| 4662 | |
| 4663 /* Take a string like "/blah/" and turn it into "blah", making sure | |
| 4664 that the first and last characters are the same, and handling | |
| 4665 quoted separator characters. Actually, stops on the occurrence of | |
| 4666 an unquoted separator. Also turns "\t" into a Tab character. | |
| 4667 Returns pointer to terminating separator. Works in place. Null | |
| 4668 terminates name string. */ | |
| 4669 char * scan_separators PP ((char *name)); | |
| 4670 char * | |
| 4671 scan_separators (name) | |
| 4672 char *name; | |
| 4673 { | |
| 4674 char sep = name[0]; | |
| 4675 char *copyto = name; | |
| 4676 bool quoted = FALSE; | |
| 4677 | |
| 4678 for (++name; *name != '\0'; ++name) | |
| 4679 { | |
| 4680 if (quoted) | |
| 4681 { | |
| 4682 if (*name == 't') | |
| 4683 *copyto++ = '\t'; | |
| 4684 else if (*name == sep) | |
| 4685 *copyto++ = sep; | |
| 4686 else | |
| 4687 { | |
| 4688 /* Something else is quoted, so preserve the quote. */ | |
| 4689 *copyto++ = '\\'; | |
| 4690 *copyto++ = *name; | |
| 4691 } | |
| 4692 quoted = FALSE; | |
| 4693 } | |
| 4694 else if (*name == '\\') | |
| 4695 quoted = TRUE; | |
| 4696 else if (*name == sep) | |
| 4697 break; | |
| 4698 else | |
| 4699 *copyto++ = *name; | |
| 4700 } | |
| 4701 | |
| 4702 /* Terminate copied string. */ | |
| 4703 *copyto = '\0'; | |
| 4704 return name; | |
| 4705 } | |
| 4706 | |
| 4707 /* Look at the argument of --regex or --no-regex and do the right | |
| 4708 thing. Same for each line of a regexp file. */ | |
| 4709 void | |
| 4710 analyse_regex (regex_arg) | |
| 4711 char *regex_arg; | |
| 4712 { | |
| 4713 if (regex_arg == NULL) | |
| 4714 free_patterns (); /* --no-regex: remove existing regexps */ | |
| 4715 | |
| 4716 /* A real --regexp option or a line in a regexp file. */ | |
| 4717 switch (regex_arg[0]) | |
| 4718 { | |
| 4719 /* Comments in regexp file or null arg to --regex. */ | |
| 4720 case '\0': | |
| 4721 case ' ': | |
| 4722 case '\t': | |
| 4723 break; | |
| 4724 | |
| 4725 /* Read a regex file. This is recursive and may result in a | |
| 4726 loop, which will stop when the file descriptors are exhausted. */ | |
| 4727 case '@': | |
| 4728 { | |
| 4729 FILE *regexfp; | |
| 4730 linebuffer regexbuf; | |
| 4731 char *regexfile = regex_arg + 1; | |
| 4732 | |
| 4733 /* regexfile is a file containing regexps, one per line. */ | |
| 4734 regexfp = fopen (regexfile, "r"); | |
| 4735 if (regexfp == NULL) | |
| 4736 { | |
| 4737 pfatal (regexfile); | |
| 4738 return; | |
| 4739 } | |
| 4740 initbuffer (®exbuf); | |
| 4741 while (readline_internal (®exbuf, regexfp) > 0) | |
| 4742 analyse_regex (regexbuf.buffer); | |
| 4743 free (regexbuf.buffer); | |
| 4744 fclose (regexfp); | |
| 4745 } | |
| 4746 break; | |
| 4747 | |
| 4748 /* Regexp to be used for a specific language only. */ | |
| 4749 case '{': | |
| 4750 { | |
| 4751 language *lang; | |
| 4752 char *lang_name = regex_arg + 1; | |
| 4753 char *cp; | |
| 4754 | |
| 4755 for (cp = lang_name; *cp != '}'; cp++) | |
| 4756 if (*cp == '\0') | |
| 4757 { | |
| 4758 error ("unterminated language name in regex: %s", regex_arg); | |
| 4759 return; | |
| 4760 } | |
| 4761 *cp = '\0'; | |
| 4762 lang = get_language_from_name (lang_name); | |
| 4763 if (lang == NULL) | |
| 4764 return; | |
| 4765 add_regex (cp + 1, lang); | |
| 4766 } | |
| 4767 break; | |
| 4768 | |
| 4769 /* Regexp to be used for any language. */ | |
| 4770 default: | |
| 4771 add_regex (regex_arg, NULL); | |
| 4772 break; | |
| 4773 } | |
| 4774 } | |
| 4775 | |
| 4776 /* Turn a name, which is an ed-style (but Emacs syntax) regular | |
| 4777 expression, into a real regular expression by compiling it. */ | |
| 4778 void | |
| 4779 add_regex (regexp_pattern, lang) | |
| 4780 char *regexp_pattern; | |
| 4781 language *lang; | |
| 4782 { | |
| 4783 char *name; | |
| 4784 const char *err; | |
| 4785 struct re_pattern_buffer *patbuf; | |
| 4786 pattern *pp; | |
| 4787 | |
| 4788 | |
| 4789 if (regexp_pattern[strlen(regexp_pattern)-1] != regexp_pattern[0]) | |
| 4790 { | |
| 4791 error ("%s: unterminated regexp", regexp_pattern); | |
| 4792 return; | |
| 4793 } | |
| 4794 name = scan_separators (regexp_pattern); | |
| 4795 if (regexp_pattern[0] == '\0') | |
| 4796 { | |
| 4797 error ("null regexp", (char *)NULL); | |
| 4798 return; | |
| 4799 } | |
| 4800 (void) scan_separators (name); | |
| 4801 | |
| 4802 patbuf = xnew (1, struct re_pattern_buffer); | |
| 4803 patbuf->translate = NULL; | |
| 4804 patbuf->fastmap = NULL; | |
| 4805 patbuf->buffer = NULL; | |
| 4806 patbuf->allocated = 0; | |
| 4807 | |
| 4808 err = re_compile_pattern (regexp_pattern, strlen (regexp_pattern), patbuf); | |
| 4809 if (err != NULL) | |
| 4810 { | |
| 4811 error ("%s while compiling pattern", err); | |
| 4812 return; | |
| 4813 } | |
| 4814 | |
| 4815 pp = p_head; | |
| 4816 p_head = xnew (1, pattern); | |
| 4817 p_head->regex = savestr (regexp_pattern); | |
| 4818 p_head->p_next = pp; | |
| 4819 p_head->language = lang; | |
| 4820 p_head->pattern = patbuf; | |
| 4821 p_head->name_pattern = savestr (name); | |
| 4822 p_head->error_signaled = FALSE; | |
| 4823 } | |
| 4824 | |
| 4825 /* | |
| 4826 * Do the substitutions indicated by the regular expression and | |
| 4827 * arguments. | |
| 4828 */ | |
| 4829 char * substitute PP ((char *in, char *out, struct re_registers *regs)); | |
| 4830 char * | |
| 4831 substitute (in, out, regs) | |
| 4832 char *in, *out; | |
| 4833 struct re_registers *regs; | |
| 4834 { | |
| 4835 char *result, *t; | |
| 4836 int size, dig, diglen; | |
| 4837 | |
| 4838 result = NULL; | |
| 4839 size = strlen (out); | |
| 4840 | |
| 4841 /* Pass 1: figure out how much to allocate by finding all \N strings. */ | |
| 4842 if (out[size - 1] == '\\') | |
| 4843 fatal ("pattern error in \"%s\"", out); | |
| 4844 for (t = etags_strchr (out, '\\'); | |
| 4845 t != NULL; | |
| 4846 t = etags_strchr (t + 2, '\\')) | |
| 4847 if (isdigit (t[1])) | |
| 4848 { | |
| 4849 dig = t[1] - '0'; | |
| 4850 diglen = regs->end[dig] - regs->start[dig]; | |
| 4851 size += diglen - 2; | |
| 4852 } | |
| 4853 else | |
| 4854 size -= 1; | |
| 4855 | |
| 4856 /* Allocate space and do the substitutions. */ | |
| 4857 result = xnew (size + 1, char); | |
| 4858 | |
| 4859 for (t = result; *out != '\0'; out++) | |
| 4860 if (*out == '\\' && isdigit (*++out)) | |
| 4861 { | |
| 4862 /* Using "dig2" satisfies my debugger. Bleah. */ | |
| 4863 dig = *out - '0'; | |
| 4864 diglen = regs->end[dig] - regs->start[dig]; | |
| 4865 strncpy (t, in + regs->start[dig], diglen); | |
| 4866 t += diglen; | |
| 4867 } | |
| 4868 else | |
| 4869 *t++ = *out; | |
| 4870 *t = '\0'; | |
| 4871 | |
|
5820
b3824b7f5627
Some changes to eliminate warnings with Apple clang version 1.7.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5406
diff
changeset
|
4872 if (DEBUG && (t > result + size || t - result != (int) (strlen (result)))) |
| 428 | 4873 abort (); |
| 4874 | |
| 4875 return result; | |
| 4876 } | |
| 4877 | |
| 4878 /* Deallocate all patterns. */ | |
| 4879 void | |
| 4880 free_patterns () | |
| 4881 { | |
| 4882 pattern *pp; | |
| 4883 while (p_head != NULL) | |
| 4884 { | |
| 4885 pp = p_head->p_next; | |
| 4886 free (p_head->regex); | |
| 4887 free (p_head->name_pattern); | |
| 4888 free (p_head); | |
| 4889 p_head = pp; | |
| 4890 } | |
| 4891 return; | |
| 4892 } | |
| 4893 | |
| 4894 #endif /* ETAGS_REGEXPS */ | |
| 4895 /* Initialize a linebuffer for use */ | |
| 4896 void | |
| 4897 initbuffer (lbp) | |
| 4898 linebuffer *lbp; | |
| 4899 { | |
| 4900 lbp->size = 200; | |
| 4901 lbp->buffer = xnew (200, char); | |
| 4902 } | |
| 4903 | |
| 4904 /* | |
| 4905 * Read a line of text from `stream' into `lbp', excluding the | |
| 4906 * newline or CR-NL, if any. Return the number of characters read from | |
| 4907 * `stream', which is the length of the line including the newline. | |
| 4908 * | |
| 4909 * On DOS or Windows we do not count the CR character, if any, before the | |
| 4910 * NL, in the returned length; this mirrors the behavior of emacs on those | |
| 4911 * platforms (for text files, it translates CR-NL to NL as it reads in the | |
| 4912 * file). | |
| 4913 */ | |
| 4914 long | |
| 4915 readline_internal (lbp, stream) | |
| 4916 linebuffer *lbp; | |
| 4917 register FILE *stream; | |
| 4918 { | |
| 4919 char *buffer = lbp->buffer; | |
| 4920 register char *p = lbp->buffer; | |
| 4921 register char *pend; | |
| 4922 int chars_deleted; | |
| 4923 | |
| 4924 pend = p + lbp->size; /* Separate to avoid 386/IX compiler bug. */ | |
| 4925 | |
| 4926 while (1) | |
| 4927 { | |
| 4928 register int c = getc (stream); | |
| 4929 if (p == pend) | |
| 4930 { | |
| 4931 /* We're at the end of linebuffer: expand it. */ | |
| 4932 lbp->size *= 2; | |
| 4933 buffer = xrnew (buffer, lbp->size, char); | |
| 4934 p += buffer - lbp->buffer; | |
| 4935 pend = buffer + lbp->size; | |
| 4936 lbp->buffer = buffer; | |
| 4937 } | |
| 4938 if (c == EOF) | |
| 4939 { | |
| 4940 *p = '\0'; | |
| 4941 chars_deleted = 0; | |
| 4942 break; | |
| 4943 } | |
| 4944 if (c == '\n') | |
| 4945 { | |
| 4946 if (p > buffer && p[-1] == '\r') | |
| 4947 { | |
| 4948 p -= 1; | |
| 442 | 4949 #ifdef WIN32_NATIVE |
| 428 | 4950 /* Assume CRLF->LF translation will be performed by Emacs |
| 4951 when loading this file, so CRs won't appear in the buffer. | |
| 4952 It would be cleaner to compensate within Emacs; | |
| 4953 however, Emacs does not know how many CRs were deleted | |
| 4954 before any given point in the file. */ | |
| 4955 chars_deleted = 1; | |
| 4956 #else | |
| 4957 chars_deleted = 2; | |
| 4958 #endif | |
| 4959 } | |
| 4960 else | |
| 4961 { | |
| 4962 chars_deleted = 1; | |
| 4963 } | |
| 4964 *p = '\0'; | |
| 4965 break; | |
| 4966 } | |
| 4967 *p++ = c; | |
| 4968 } | |
| 4969 lbp->len = p - buffer; | |
| 4970 | |
| 4971 return lbp->len + chars_deleted; | |
| 4972 } | |
| 4973 | |
| 4974 /* | |
| 4975 * Like readline_internal, above, but in addition try to match the | |
| 4976 * input line against relevant regular expressions. | |
| 4977 */ | |
| 4978 long | |
| 4979 readline (lbp, stream) | |
| 4980 linebuffer *lbp; | |
| 4981 FILE *stream; | |
| 4982 { | |
| 4983 /* Read new line. */ | |
| 4984 long result = readline_internal (lbp, stream); | |
| 4985 #ifdef ETAGS_REGEXPS | |
| 4986 int match; | |
| 4987 pattern *pp; | |
| 4988 | |
| 4989 /* Match against relevant patterns. */ | |
| 4990 if (lbp->len > 0) | |
| 4991 for (pp = p_head; pp != NULL; pp = pp->p_next) | |
| 4992 { | |
| 4993 /* Only use generic regexps or those for the current language. */ | |
| 4994 if (pp->language != NULL && pp->language != curlang) | |
| 4995 continue; | |
| 4996 | |
| 4997 match = re_match (pp->pattern, lbp->buffer, lbp->len, 0, &pp->regs); | |
| 4998 switch (match) | |
| 4999 { | |
| 5000 case -2: | |
| 5001 /* Some error. */ | |
| 5002 if (!pp->error_signaled) | |
| 5003 { | |
| 5004 error ("error while matching \"%s\"", pp->regex); | |
| 5005 pp->error_signaled = TRUE; | |
| 5006 } | |
| 5007 break; | |
| 5008 case -1: | |
| 5009 /* No match. */ | |
| 5010 break; | |
| 5011 default: | |
| 5012 /* Match occurred. Construct a tag. */ | |
| 5013 if (pp->name_pattern[0] != '\0') | |
| 5014 { | |
| 5015 /* Make a named tag. */ | |
| 5016 char *name = substitute (lbp->buffer, | |
| 5017 pp->name_pattern, &pp->regs); | |
| 5018 if (name != NULL) | |
| 5019 pfnote (name, TRUE, lbp->buffer, match, lineno, linecharno); | |
| 5020 } | |
| 5021 else | |
| 5022 { | |
| 5023 /* Make an unnamed tag. */ | |
| 5024 pfnote ((char *)NULL, TRUE, | |
| 5025 lbp->buffer, match, lineno, linecharno); | |
| 5026 } | |
| 5027 break; | |
| 5028 } | |
| 5029 } | |
| 5030 #endif /* ETAGS_REGEXPS */ | |
| 5031 | |
| 5032 return result; | |
| 5033 } | |
| 5034 | |
| 5035 /* | |
| 5036 * Return a pointer to a space of size strlen(cp)+1 allocated | |
| 5037 * with xnew where the string CP has been copied. | |
| 5038 */ | |
| 5039 char * | |
| 5040 savestr (cp) | |
| 5041 char *cp; | |
| 5042 { | |
| 5043 return savenstr (cp, strlen (cp)); | |
| 5044 } | |
| 5045 | |
| 5046 /* | |
| 5047 * Return a pointer to a space of size LEN+1 allocated with xnew where | |
| 5048 * the string CP has been copied for at most the first LEN characters. | |
| 5049 */ | |
| 5050 char * | |
| 5051 savenstr (cp, len) | |
| 5052 char *cp; | |
| 5053 int len; | |
| 5054 { | |
| 5055 register char *dp; | |
| 5056 | |
| 5057 dp = xnew (len + 1, char); | |
| 5058 strncpy (dp, cp, len); | |
| 5059 dp[len] = '\0'; | |
| 5060 return dp; | |
| 5061 } | |
| 5062 | |
| 5063 /* | |
| 5064 * Return the ptr in sp at which the character c last | |
| 5065 * appears; NULL if not found | |
| 5066 * | |
| 5067 * Identical to System V strrchr, included for portability. | |
| 5068 */ | |
| 5069 char * | |
| 5070 etags_strrchr (sp, c) | |
| 5071 register char *sp; | |
| 5072 register int c; | |
| 5073 { | |
| 5074 register char *r; | |
| 5075 | |
| 5076 r = NULL; | |
| 5077 do | |
| 5078 { | |
| 5079 if (*sp == c) | |
| 5080 r = sp; | |
| 5081 } while (*sp++); | |
| 5082 return r; | |
| 5083 } | |
| 5084 | |
| 5085 | |
| 5086 /* | |
| 5087 * Return the ptr in sp at which the character c first | |
| 5088 * appears; NULL if not found | |
| 5089 * | |
| 5090 * Identical to System V strchr, included for portability. | |
| 5091 */ | |
| 5092 char * | |
| 5093 etags_strchr (sp, c) | |
| 5094 register char *sp; | |
| 5095 register int c; | |
| 5096 { | |
| 5097 do | |
| 5098 { | |
| 5099 if (*sp == c) | |
| 5100 return sp; | |
| 5101 } while (*sp++); | |
| 5102 return NULL; | |
| 5103 } | |
| 5104 | |
| 5105 /* Skip spaces, return new pointer. */ | |
| 5106 char * | |
| 5107 skip_spaces (cp) | |
| 5108 char *cp; | |
| 5109 { | |
| 5110 while (isspace (*cp)) /* isspace('\0')==FALSE */ | |
| 5111 cp++; | |
| 5112 return cp; | |
| 5113 } | |
| 5114 | |
| 5115 /* Skip non spaces, return new pointer. */ | |
| 5116 char * | |
| 5117 skip_non_spaces (cp) | |
| 5118 char *cp; | |
| 5119 { | |
| 5120 while (!iswhite (*cp)) /* iswhite('\0')==TRUE */ | |
| 5121 cp++; | |
| 5122 return cp; | |
| 5123 } | |
| 5124 | |
| 5125 /* Print error message and exit. */ | |
| 5126 void | |
| 5127 fatal (s1, s2) | |
| 5128 char *s1, *s2; | |
| 5129 { | |
| 5130 error (s1, s2); | |
| 5131 exit (BAD); | |
| 5132 } | |
| 5133 | |
| 5134 void | |
| 5135 pfatal (s1) | |
| 5136 char *s1; | |
| 5137 { | |
| 5138 perror (s1); | |
| 5139 exit (BAD); | |
| 5140 } | |
| 5141 | |
| 5142 void | |
| 5143 suggest_asking_for_help () | |
| 5144 { | |
| 5145 fprintf (stderr, "\tTry `%s %s' for a complete list of options.\n", | |
| 5146 progname, | |
| 5147 #ifdef LONG_OPTIONS | |
| 5148 "--help" | |
| 5149 #else | |
| 5150 "-h" | |
| 5151 #endif | |
| 5152 ); | |
| 5153 exit (BAD); | |
| 5154 } | |
| 5155 | |
| 5156 /* Print error message. `s1' is printf control string, `s2' is arg for it. */ | |
| 5157 void | |
| 5158 error (s1, s2) | |
| 5159 const char *s1, *s2; | |
| 5160 { | |
| 5161 fprintf (stderr, "%s: ", progname); | |
| 5162 fprintf (stderr, s1, s2); | |
| 5163 fprintf (stderr, "\n"); | |
| 5164 } | |
| 5165 | |
| 5166 /* Return a newly-allocated string whose contents | |
| 5167 concatenate those of s1, s2, s3. */ | |
| 5168 char * | |
| 5169 concat (s1, s2, s3) | |
| 5170 char *s1, *s2, *s3; | |
| 5171 { | |
| 5172 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3); | |
| 5173 char *result = xnew (len1 + len2 + len3 + 1, char); | |
| 5174 | |
| 5175 strcpy (result, s1); | |
| 5176 strcpy (result + len1, s2); | |
| 5177 strcpy (result + len1 + len2, s3); | |
| 5178 result[len1 + len2 + len3] = '\0'; | |
| 5179 | |
| 5180 return result; | |
| 5181 } | |
| 5182 | |
| 5183 /* Does the same work as the system V getcwd, but does not need to | |
| 5184 guess the buffer size in advance. */ | |
| 5185 char * | |
| 5186 etags_getcwd () | |
| 5187 { | |
| 5188 #ifdef HAVE_GETCWD | |
| 5189 int bufsize = 200; | |
| 5190 char *path = xnew (bufsize, char); | |
| 5191 | |
| 5192 while (getcwd (path, bufsize) == NULL) | |
| 5193 { | |
| 5194 if (errno != ERANGE) | |
| 5195 pfatal ("getcwd"); | |
| 5196 bufsize *= 2; | |
| 5197 free (path); | |
| 5198 path = xnew (bufsize, char); | |
| 5199 } | |
| 5200 | |
| 5201 canonicalize_filename (path); | |
| 5202 return path; | |
| 5203 | |
| 5204 #else /* not HAVE_GETCWD */ | |
| 5205 linebuffer path; | |
| 5206 FILE *pipe; | |
| 5207 | |
| 5208 initbuffer (&path); | |
| 5209 pipe = (FILE *) popen ("pwd 2>/dev/null", "r"); | |
| 5210 if (pipe == NULL || readline_internal (&path, pipe) == 0) | |
| 5211 pfatal ("pwd"); | |
| 5212 pclose (pipe); | |
| 5213 | |
| 5214 return path.buffer; | |
| 5215 #endif /* not HAVE_GETCWD */ | |
| 5216 } | |
| 5217 | |
| 5218 /* Return a newly allocated string containing the file name of FILE | |
| 5219 relative to the absolute directory DIR (which should end with a slash). */ | |
| 5220 char * | |
| 5221 relative_filename (file, dir) | |
| 5222 char *file, *dir; | |
| 5223 { | |
| 5224 char *fp, *dp, *afn, *res; | |
| 5225 int i; | |
| 5226 | |
| 5227 /* Find the common root of file and dir (with a trailing slash). */ | |
| 5228 afn = absolute_filename (file, cwd); | |
| 5229 fp = afn; | |
| 5230 dp = dir; | |
| 5231 while (*fp++ == *dp++) | |
| 5232 continue; | |
| 5233 fp--, dp--; /* back to the first differing char */ | |
| 5234 do /* look at the equal chars until '/' */ | |
| 5235 fp--, dp--; | |
| 5236 while (*fp != '/'); | |
| 5237 | |
| 5238 /* Build a sequence of "../" strings for the resulting relative file name. */ | |
| 5239 i = 0; | |
| 5240 while ((dp = etags_strchr (dp + 1, '/')) != NULL) | |
| 5241 i += 1; | |
| 5242 res = xnew (3*i + strlen (fp + 1) + 1, char); | |
| 5243 res[0] = '\0'; | |
| 5244 while (i-- > 0) | |
| 5245 strcat (res, "../"); | |
| 5246 | |
| 5247 /* Add the file name relative to the common root of file and dir. */ | |
| 5248 strcat (res, fp + 1); | |
| 5249 free (afn); | |
| 5250 | |
| 5251 return res; | |
| 5252 } | |
| 5253 | |
| 5254 /* Return a newly allocated string containing the absolute file name | |
| 5255 of FILE given DIR (which should end with a slash). */ | |
| 5256 char * | |
| 5257 absolute_filename (file, dir) | |
| 5258 char *file, *dir; | |
| 5259 { | |
| 5260 char *slashp, *cp, *res; | |
| 5261 | |
| 5262 if (filename_is_absolute (file)) | |
| 5263 res = savestr (file); | |
| 442 | 5264 #ifdef WIN32_NATIVE |
| 428 | 5265 /* We don't support non-absolute file names with a drive |
| 5266 letter, like `d:NAME' (it's too much hassle). */ | |
| 5267 else if (file[1] == ':') | |
| 5268 fatal ("%s: relative file names with drive letters not supported", file); | |
| 5269 #endif | |
| 5270 else | |
| 5271 res = concat (dir, file, ""); | |
| 5272 | |
| 5273 /* Delete the "/dirname/.." and "/." substrings. */ | |
| 5274 slashp = etags_strchr (res, '/'); | |
| 5275 while (slashp != NULL && slashp[0] != '\0') | |
| 5276 { | |
| 5277 if (slashp[1] == '.') | |
| 5278 { | |
| 5279 if (slashp[2] == '.' | |
| 5280 && (slashp[3] == '/' || slashp[3] == '\0')) | |
| 5281 { | |
| 5282 cp = slashp; | |
| 5283 do | |
| 5284 cp--; | |
| 5285 while (cp >= res && !filename_is_absolute (cp)); | |
| 5286 if (cp < res) | |
| 5287 cp = slashp; /* the absolute name begins with "/.." */ | |
| 442 | 5288 #ifdef WIN32_NATIVE |
| 5289 /* Under Windows we get `d:/NAME' as absolute | |
| 428 | 5290 file name, so the luser could say `d:/../NAME'. |
| 5291 We silently treat this as `d:/NAME'. */ | |
| 5292 else if (cp[0] != '/') | |
| 5293 cp = slashp; | |
| 5294 #endif | |
| 5295 strcpy (cp, slashp + 3); | |
| 5296 slashp = cp; | |
| 5297 continue; | |
| 5298 } | |
| 5299 else if (slashp[2] == '/' || slashp[2] == '\0') | |
| 5300 { | |
| 5301 strcpy (slashp, slashp + 2); | |
| 5302 continue; | |
| 5303 } | |
| 5304 } | |
| 5305 | |
| 5306 slashp = etags_strchr (slashp + 1, '/'); | |
| 5307 } | |
| 5308 | |
| 5309 if (res[0] == '\0') | |
| 5310 return savestr ("/"); | |
| 5311 else | |
| 5312 return res; | |
| 5313 } | |
| 5314 | |
| 5315 /* Return a newly allocated string containing the absolute | |
| 5316 file name of dir where FILE resides given DIR (which should | |
| 5317 end with a slash). */ | |
| 5318 char * | |
| 5319 absolute_dirname (file, dir) | |
| 5320 char *file, *dir; | |
| 5321 { | |
| 5322 char *slashp, *res; | |
| 5323 char save; | |
| 5324 | |
| 5325 canonicalize_filename (file); | |
| 5326 slashp = etags_strrchr (file, '/'); | |
| 5327 if (slashp == NULL) | |
| 5328 return savestr (dir); | |
| 5329 save = slashp[1]; | |
| 5330 slashp[1] = '\0'; | |
| 5331 res = absolute_filename (file, dir); | |
| 5332 slashp[1] = save; | |
| 5333 | |
| 5334 return res; | |
| 5335 } | |
| 5336 | |
| 5337 /* Whether the argument string is an absolute file name. The argument | |
| 5338 string must have been canonicalized with canonicalize_filename. */ | |
| 5339 bool | |
| 5340 filename_is_absolute (fn) | |
| 5341 char *fn; | |
| 5342 { | |
| 5343 return (fn[0] == '/' | |
| 442 | 5344 #ifdef WIN32_NATIVE |
| 428 | 5345 || (isalpha(fn[0]) && fn[1] == ':' && fn[2] == '/') |
| 5346 #endif | |
| 5347 ); | |
| 5348 } | |
| 5349 | |
| 5350 /* Translate backslashes into slashes. Works in place. */ | |
| 5351 void | |
| 5352 canonicalize_filename (fn) | |
| 5353 register char *fn; | |
| 5354 { | |
| 442 | 5355 #ifdef WIN32_NATIVE |
| 428 | 5356 for (; *fn != '\0'; fn++) |
| 5357 if (*fn == '\\') | |
| 5358 *fn = '/'; | |
| 5359 #else | |
| 5360 /* No action. */ | |
| 5361 #endif | |
| 5362 } | |
| 5363 | |
| 5364 /* Increase the size of a linebuffer. */ | |
| 5365 void | |
| 5366 grow_linebuffer (lbp, toksize) | |
| 5367 linebuffer *lbp; | |
| 5368 int toksize; | |
| 5369 { | |
| 5370 while (lbp->size < toksize) | |
| 5371 lbp->size *= 2; | |
| 5372 lbp->buffer = xrnew (lbp->buffer, lbp->size, char); | |
| 5373 } | |
| 5374 | |
| 5375 /* Like malloc but get fatal error if memory is exhausted. */ | |
| 5376 long * | |
| 5377 xmalloc (size) | |
| 5378 unsigned int size; | |
| 5379 { | |
| 5380 long *result = (long *) malloc (size); | |
| 5381 if (result == NULL) | |
| 5382 fatal ("virtual memory exhausted", (char *)NULL); | |
| 5383 return result; | |
| 5384 } | |
| 5385 | |
| 5386 long * | |
| 5387 xrealloc (ptr, size) | |
| 5388 char *ptr; | |
| 5389 unsigned int size; | |
| 5390 { | |
| 5391 long *result = (long *) realloc (ptr, size); | |
| 5392 if (result == NULL) | |
| 5393 fatal ("virtual memory exhausted", (char *)NULL); | |
| 5394 return result; | |
| 5395 } |