src/files.c

   1 /* Open and close files for bison,
   2    Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
   3
   4    This file is part of Bison, the GNU Compiler Compiler.
   5
   6    Bison is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    Bison is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with Bison; see the file COPYING.  If not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, USA.  */
  20
  21
  22 #include "system.h"
  23
  24 #if defined (VMS) & !defined (__VMS_POSIX)
  25 # include <ssdef.h>
  26 # define unlink delete
  27 # ifndef XPFILE
  28 #  define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
  29 # endif
  30 # ifndef XPFILE1
  31 #  define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
  32 # endif
  33 #endif
  34
  35 #if defined (_MSC_VER)
  36 # ifndef XPFILE
  37 #  define XPFILE "c:/usr/local/lib/bison.simple"
  38 # endif
  39 # ifndef XPFILE1
  40 #  define XPFILE1 "c:/usr/local/lib/bison.hairy"
  41 # endif
  42 #endif
  43
  44 #include "getargs.h"
  45 #include "files.h"
  46 #include "alloc.h"
  47 #include "gram.h"
  48 #include "complain.h"
  49
  50 FILE *finput = NULL;
  51 FILE *foutput = NULL;
  52 FILE *fdefines = NULL;
  53 FILE *ftable = NULL;
  54 FILE *fattrs = NULL;
  55 FILE *fguard = NULL;
  56 FILE *faction = NULL;
  57 FILE *fparser = NULL;
  58
  59 /* File name specified with -o for the output file, or 0 if no -o.  */
  60 char *spec_outfile;
  61
  62 char *infile;
  63 char *attrsfile;
  64
  65 static char *outfile;
  66 static char *defsfile;
  67 static char *tabfile;
  68 static char *guardfile;
  69 static char *actfile;
  70 static char *tmpattrsfile;
  71 static char *tmptabfile;
  72 static char *tmpdefsfile;
  73
  74 extern char     *mktemp();      /* So the compiler won't complain */
  75 extern char     *getenv();
  76
  77 extern char *stringappend PARAMS((const char *, int, const char *));
  78 extern void openfiles PARAMS((void));
  79 extern void open_extra_files PARAMS((void));
  80
  81 int fixed_outfiles = 0;
  82
  83 extern char *program_name;
  84 \f
  85
  86 char *
  87 stringappend (const char *string1, int end1, const char *string2)
  88 {
  89   register char *ostring;
  90   register char *cp;
  91   register const char *cp1;
  92   register int i;
  93
  94   cp1 = string2;
  95   i = 0;
  96   while (*cp1++) i++;
  97
  98   ostring = NEW2(i+end1+1, char);
  99
 100   cp = ostring;
 101   cp1 = string1;
 102   for (i = 0; i < end1; i++)
 103     *cp++ = *cp1++;
 104
 105   cp1 = string2;
 106   while ((*cp++ = *cp1++))
 107     ;
 108
 109   return ostring;
 110 }
 111
 112 /*-----------------------------------------------------------------.
 113 | Try to open file NAME with mode MODE, and print an error message |
 114 | if fails.                                                        |
 115 `-----------------------------------------------------------------*/
 116
 117 static FILE *
 118 tryopen (const char *name, const char *mode)
 119 {
 120   FILE  *ptr;
 121
 122   ptr = fopen (name, mode);
 123   if (!ptr)
 124     error (2, errno, _("cannot open file `%s'"), name);
 125
 126   return ptr;
 127 }
 128
 129 /*-------------------------------------------------------------.
 130 | Try to close file PTR, and print an error message if fails.  |
 131 `-------------------------------------------------------------*/
 132
 133 static int
 134 tryclose (FILE *ptr)
 135 {
 136   int result;
 137
 138   if (ptr == NULL)
 139     return 0;
 140
 141   result = fclose (ptr);
 142   if (result == EOF)
 143     error (2, errno, _("cannot close file"));
 144
 145   return result;
 146 }
 147 \f
 148 /* JF this has been hacked to death.  Nowaday it sets up the file names for
 149    the output files, and opens the tmp files and the parser */
 150 void
 151 openfiles (void)
 152 {
 153   char *name_base;
 154 #ifdef MSDOS
 155   register char *cp;
 156 #endif
 157   char *filename;
 158   int base_length;
 159   int short_base_length;
 160
 161 #if defined (VMS) & !defined (__VMS_POSIX)
 162   const char *tmp_base = "sys$scratch:b_";
 163 #else
 164   const char *tmp_base = "/tmp/b.";
 165 #endif
 166   int tmp_len;
 167
 168 #ifdef MSDOS
 169   tmp_base = getenv ("TMP");
 170   if (tmp_base == 0)
 171     tmp_base = "";
 172   strlwr (infile);
 173 #endif /* MSDOS */
 174
 175 #if (defined(_WIN32) && !defined(__CYGWIN32__))
 176   tmp_base = getenv ("TEMP");           /* Windows95 defines this ... */
 177   if (tmp_base == 0)
 178     tmp_base = getenv ("Temp");         /* ... while NT prefers this */
 179   if (tmp_base == 0)
 180     tmp_base = "";
 181   strlwr (infile);
 182 #endif /* _WIN32 && !__CYGWIN32__ */
 183
 184 #if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__))
 185   {
 186     char *tmp_ptr = getenv("TMPDIR");
 187
 188     if (tmp_ptr != 0)
 189       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
 190   }
 191 #endif  /* unix || __unix || __unix__ */
 192
 193   tmp_len = strlen (tmp_base);
 194
 195   if (spec_outfile)
 196     {
 197       /* -o was specified.  The precise -o name will be used for ftable.
 198          For other output files, remove the ".c" or ".tab.c" suffix.  */
 199       name_base = spec_outfile;
 200 #ifdef MSDOS
 201       strlwr (name_base);
 202 #endif /* MSDOS */
 203       /* BASE_LENGTH includes ".tab" but not ".c".  */
 204       base_length = strlen (name_base);
 205       if (!strcmp (name_base + base_length - 2, ".c"))
 206         base_length -= 2;
 207       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 208       short_base_length = base_length;
 209       if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
 210         short_base_length -= 4;
 211       else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
 212         short_base_length -= 4;
 213     }
 214   else if (spec_file_prefix)
 215     {
 216       /* -b was specified.  Construct names from it.  */
 217       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 218       short_base_length = strlen (spec_file_prefix);
 219       /* Count room for `.tab'.  */
 220       base_length = short_base_length + 4;
 221       name_base = (char *) xmalloc (base_length + 1);
 222       /* Append `.tab'.  */
 223       strcpy (name_base, spec_file_prefix);
 224 #ifdef VMS
 225       strcat (name_base, "_tab");
 226 #else
 227       strcat (name_base, ".tab");
 228 #endif
 229 #ifdef MSDOS
 230       strlwr (name_base);
 231 #endif /* MSDOS */
 232     }
 233   else
 234     {
 235       /* -o was not specified; compute output file name from input
 236          or use y.tab.c, etc., if -y was specified.  */
 237
 238       static char FIXED_NAME_BASE[] = "y.y";
 239
 240       name_base = fixed_outfiles ? FIXED_NAME_BASE : infile;
 241
 242       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 243
 244       base_length = strlen (name_base);
 245       if (!strcmp (name_base + base_length - 2, ".y"))
 246         base_length -= 2;
 247       short_base_length = base_length;
 248
 249 #ifdef VMS
 250       name_base = stringappend(name_base, short_base_length, "_tab");
 251 #else
 252 #ifdef MSDOS
 253       name_base = stringappend(name_base, short_base_length, "_tab");
 254 #else
 255       name_base = stringappend(name_base, short_base_length, ".tab");
 256 #endif /* not MSDOS */
 257 #endif
 258       base_length = short_base_length + 4;
 259     }
 260
 261   finput = tryopen(infile, "r");
 262
 263   if (! noparserflag)
 264     {
 265       filename = getenv("BISON_SIMPLE");
 266 #ifdef MSDOS
 267       /* File doesn't exist in current directory; try in INIT directory.  */
 268       cp = getenv("INIT");
 269       if (filename == 0 && cp != NULL)
 270         {
 271           filename = xmalloc(strlen(cp) + strlen(PFILE) + 2);
 272           strcpy(filename, cp);
 273           cp = filename + strlen(filename);
 274           *cp++ = '/';
 275           strcpy(cp, PFILE);
 276         }
 277 #endif /* MSDOS */
 278       fparser = tryopen(filename ? filename : PFILE, "r");
 279     }
 280
 281   if (verboseflag)
 282     {
 283 #ifdef MSDOS
 284       outfile = stringappend(name_base, short_base_length, ".out");
 285 #else
 286       /* We used to use just .out if spec_name_prefix (-p) was used,
 287          but that conflicts with Posix.  */
 288       outfile = stringappend(name_base, short_base_length, ".output");
 289 #endif
 290       foutput = tryopen(outfile, "w");
 291     }
 292
 293   if (noparserflag)
 294     {
 295       /* use permanent name for actions file */
 296       actfile = stringappend(name_base, short_base_length, ".act");
 297       faction = tryopen(actfile, "w");
 298     }
 299
 300 #ifdef MSDOS
 301   if (! noparserflag)
 302     actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX"));
 303   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX"));
 304   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX"));
 305   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX"));
 306 #else
 307   if (! noparserflag)
 308     actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX"));
 309   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX"));
 310   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX"));
 311   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX"));
 312 #endif /* not MSDOS */
 313
 314   if (! noparserflag)
 315     faction = tryopen(actfile, "w+");
 316   fattrs = tryopen(tmpattrsfile,"w+");
 317   ftable = tryopen(tmptabfile, "w+");
 318
 319   if (definesflag)
 320     {
 321       defsfile = stringappend(name_base, base_length, ".h");
 322       fdefines = tryopen(tmpdefsfile, "w+");
 323     }
 324
 325 #if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 326   if (! noparserflag)
 327     unlink(actfile);
 328   unlink(tmpattrsfile);
 329   unlink(tmptabfile);
 330   unlink(tmpdefsfile);
 331 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 332
 333         /* These are opened by `done' or `open_extra_files', if at all */
 334   if (spec_outfile)
 335     tabfile = spec_outfile;
 336   else
 337     tabfile = stringappend(name_base, base_length, ".c");
 338
 339 #ifdef VMS
 340   attrsfile = stringappend(name_base, short_base_length, "_stype.h");
 341   guardfile = stringappend(name_base, short_base_length, "_guard.c");
 342 #else
 343 #ifdef MSDOS
 344   attrsfile = stringappend(name_base, short_base_length, ".sth");
 345   guardfile = stringappend(name_base, short_base_length, ".guc");
 346 #else
 347   attrsfile = stringappend(name_base, short_base_length, ".stype.h");
 348   guardfile = stringappend(name_base, short_base_length, ".guard.c");
 349 #endif /* not MSDOS */
 350 #endif /* not VMS */
 351 }
 352
 353
 354
 355 /*--------------------------------------------------------------------.
 356 | Open the output files needed only for the semantic parser.  This    |
 357 | is done when %semantic_parser is seen in the declarations section.  |
 358 `--------------------------------------------------------------------*/
 359
 360 void
 361 open_extra_files (void)
 362 {
 363   FILE *ftmp;
 364   int c;
 365   char *filename;
 366 #ifdef MSDOS
 367   char *cp;
 368 #endif
 369
 370   tryclose(fparser);
 371
 372   if (! noparserflag)
 373     {
 374       filename = (char *) getenv ("BISON_HAIRY");
 375 #ifdef MSDOS
 376       /* File doesn't exist in current directory; try in INIT directory.  */
 377       cp = getenv("INIT");
 378       if (filename == 0 && cp != NULL)
 379         {
 380           filename = xmalloc(strlen(cp) + strlen(PFILE1) + 2);
 381           strcpy(filename, cp);
 382           cp = filename + strlen(filename);
 383           *cp++ = '/';
 384           strcpy(cp, PFILE1);
 385         }
 386 #endif
 387       fparser= tryopen(filename ? filename : PFILE1, "r");
 388     }
 389
 390                 /* JF change from inline attrs file to separate one */
 391   ftmp = tryopen(attrsfile, "w");
 392   rewind(fattrs);
 393   while((c=getc(fattrs))!=EOF)  /* Thank god for buffering */
 394     putc(c,ftmp);
 395   tryclose(fattrs);
 396   fattrs=ftmp;
 397
 398   fguard = tryopen(guardfile, "w");
 399
 400 }
 401
 402 void
 403 done (void)
 404 {
 405   tryclose(faction);
 406   tryclose(fattrs);
 407   tryclose(fguard);
 408   tryclose(finput);
 409   tryclose(fparser);
 410   tryclose(foutput);
 411
 412   /* JF write out the output file */
 413   if (!complain_message_count && ftable)
 414     {
 415       FILE *ftmp;
 416       register int c;
 417
 418       ftmp=tryopen(tabfile, "w");
 419       rewind(ftable);
 420       while((c=getc(ftable)) != EOF)
 421         putc(c,ftmp);
 422       tryclose(ftmp);
 423       tryclose(ftable);
 424
 425       if (definesflag)
 426         {
 427           ftmp = tryopen(defsfile, "w");
 428           fflush(fdefines);
 429           rewind(fdefines);
 430           while((c=getc(fdefines)) != EOF)
 431             putc(c,ftmp);
 432           tryclose(ftmp);
 433           tryclose(fdefines);
 434         }
 435     }
 436
 437 #if defined (VMS) & !defined (__VMS_POSIX)
 438   if (faction && ! noparserflag)
 439     delete(actfile);
 440   if (fattrs)
 441     delete(tmpattrsfile);
 442   if (ftable)
 443     delete(tmptabfile);
 444 /* Don't call exit again, we're in atexit ().
 445   if (!complain_message_count)
 446     sys$exit(SS$_NORMAL);
 447   sys$exit(SS$_ABORT); */
 448 #else
 449 #if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 450   if (actfile && ! noparserflag) unlink(actfile);
 451   if (tmpattrsfile) unlink(tmpattrsfile);
 452   if (tmptabfile) unlink(tmptabfile);
 453   if (tmpdefsfile) unlink(tmpdefsfile);
 454 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 455 /* Don't call exit again, we're in atexit ().
 456   exit (complain_message_count ? 1 : 0); */
 457 #endif /* not VMS, or __VMS_POSIX */
 458 }