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 *program_name;
  78 \f
  79
  80 static char *
  81 stringappend (const char *string1, int end1, const char *string2)
  82 {
  83   register char *ostring;
  84   register char *cp;
  85   register const char *cp1;
  86   register int i;
  87
  88   cp1 = string2;
  89   i = 0;
  90   while (*cp1++)
  91     i++;
  92
  93   ostring = NEW2 (i + end1 + 1, char);
  94
  95   cp = ostring;
  96   cp1 = string1;
  97   for (i = 0; i < end1; i++)
  98     *cp++ = *cp1++;
  99
 100   cp1 = string2;
 101   while ((*cp++ = *cp1++))
 102     ;
 103
 104   return ostring;
 105 }
 106
 107 /*-----------------------------------------------------------------.
 108 | Try to open file NAME with mode MODE, and print an error message |
 109 | if fails.                                                        |
 110 `-----------------------------------------------------------------*/
 111
 112 static FILE *
 113 xfopen (const char *name, const char *mode)
 114 {
 115   FILE *ptr;
 116
 117   ptr = fopen (name, mode);
 118   if (!ptr)
 119     error (2, errno, _("cannot open file `%s'"), name);
 120
 121   return ptr;
 122 }
 123
 124 /*-------------------------------------------------------------.
 125 | Try to close file PTR, and print an error message if fails.  |
 126 `-------------------------------------------------------------*/
 127
 128 static int
 129 xfclose (FILE *ptr)
 130 {
 131   int result;
 132
 133   if (ptr == NULL)
 134     return 0;
 135
 136   result = fclose (ptr);
 137   if (result == EOF)
 138     error (2, errno, _("cannot close file"));
 139
 140   return result;
 141 }
 142 \f
 143 /* JF this has been hacked to death.  Nowaday it sets up the file names for
 144    the output files, and opens the tmp files and the parser */
 145 void
 146 open_files (void)
 147 {
 148   char *name_base;
 149 #ifdef MSDOS
 150   register char *cp;
 151 #endif
 152   char *filename;
 153   int base_length;
 154   int short_base_length;
 155
 156 #if defined (VMS) & !defined (__VMS_POSIX)
 157   const char *tmp_base = "sys$scratch:b_";
 158 #else
 159   const char *tmp_base = "/tmp/b.";
 160 #endif
 161   int tmp_len;
 162
 163 #ifdef MSDOS
 164   tmp_base = getenv ("TMP");
 165   if (tmp_base == 0)
 166     tmp_base = "";
 167   strlwr (infile);
 168 #endif /* MSDOS */
 169
 170 #if (defined(_WIN32) && !defined(__CYGWIN32__))
 171   tmp_base = getenv ("TEMP");   /* Windows95 defines this ... */
 172   if (tmp_base == 0)
 173     tmp_base = getenv ("Temp"); /* ... while NT prefers this */
 174   if (tmp_base == 0)
 175     tmp_base = "";
 176   strlwr (infile);
 177 #endif /* _WIN32 && !__CYGWIN32__ */
 178
 179 #if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__))
 180   {
 181     char *tmp_ptr = getenv ("TMPDIR");
 182
 183     if (tmp_ptr != 0)
 184       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
 185   }
 186 #endif /* unix || __unix || __unix__ */
 187
 188   tmp_len = strlen (tmp_base);
 189
 190   if (spec_outfile)
 191     {
 192       /* -o was specified.  The precise -o name will be used for ftable.
 193          For other output files, remove the ".c" or ".tab.c" suffix.  */
 194       name_base = spec_outfile;
 195 #ifdef MSDOS
 196       strlwr (name_base);
 197 #endif /* MSDOS */
 198       /* BASE_LENGTH includes ".tab" but not ".c".  */
 199       base_length = strlen (name_base);
 200       if (!strcmp (name_base + base_length - 2, ".c"))
 201         base_length -= 2;
 202       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 203       short_base_length = base_length;
 204       if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
 205         short_base_length -= 4;
 206       else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
 207         short_base_length -= 4;
 208     }
 209   else if (spec_file_prefix)
 210     {
 211       /* -b was specified.  Construct names from it.  */
 212       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 213       short_base_length = strlen (spec_file_prefix);
 214       /* Count room for `.tab'.  */
 215       base_length = short_base_length + 4;
 216       name_base = (char *) xmalloc (base_length + 1);
 217       /* Append `.tab'.  */
 218       strcpy (name_base, spec_file_prefix);
 219 #ifdef VMS
 220       strcat (name_base, "_tab");
 221 #else
 222       strcat (name_base, ".tab");
 223 #endif
 224 #ifdef MSDOS
 225       strlwr (name_base);
 226 #endif /* MSDOS */
 227     }
 228   else
 229     {
 230       /* -o was not specified; compute output file name from input
 231          or use y.tab.c, etc., if -y was specified.  */
 232
 233       static char FIXED_NAME_BASE[] = "y.y";
 234
 235       name_base = fixed_outfiles ? FIXED_NAME_BASE : infile;
 236
 237       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 238
 239       base_length = strlen (name_base);
 240       if (!strcmp (name_base + base_length - 2, ".y"))
 241         base_length -= 2;
 242       short_base_length = base_length;
 243
 244 #ifdef VMS
 245       name_base = stringappend (name_base, short_base_length, "_tab");
 246 #else
 247 #ifdef MSDOS
 248       name_base = stringappend (name_base, short_base_length, "_tab");
 249 #else
 250       name_base = stringappend (name_base, short_base_length, ".tab");
 251 #endif /* not MSDOS */
 252 #endif
 253       base_length = short_base_length + 4;
 254     }
 255
 256   finput = xfopen (infile, "r");
 257
 258   if (!noparserflag)
 259     {
 260       filename = getenv ("BISON_SIMPLE");
 261 #ifdef MSDOS
 262       /* File doesn't exist in current directory; try in INIT directory.  */
 263       cp = getenv ("INIT");
 264       if (filename == 0 && cp != NULL)
 265         {
 266           filename = xmalloc (strlen (cp) + strlen (PFILE) + 2);
 267           strcpy (filename, cp);
 268           cp = filename + strlen (filename);
 269           *cp++ = '/';
 270           strcpy (cp, PFILE);
 271         }
 272 #endif /* MSDOS */
 273       fparser = xfopen (filename ? filename : PFILE, "r");
 274     }
 275
 276   if (verboseflag)
 277     {
 278 #ifdef MSDOS
 279       outfile = stringappend (name_base, short_base_length, ".out");
 280 #else
 281       /* We used to use just .out if spec_name_prefix (-p) was used,
 282          but that conflicts with Posix.  */
 283       outfile = stringappend (name_base, short_base_length, ".output");
 284 #endif
 285       foutput = xfopen (outfile, "w");
 286     }
 287
 288   if (noparserflag)
 289     {
 290       /* use permanent name for actions file */
 291       actfile = stringappend (name_base, short_base_length, ".act");
 292       faction = xfopen (actfile, "w");
 293     }
 294
 295 #ifdef MSDOS
 296   if (!noparserflag)
 297     actfile = mktemp (stringappend (tmp_base, tmp_len, "acXXXXXX"));
 298   tmpattrsfile = mktemp (stringappend (tmp_base, tmp_len, "atXXXXXX"));
 299   tmptabfile = mktemp (stringappend (tmp_base, tmp_len, "taXXXXXX"));
 300   tmpdefsfile = mktemp (stringappend (tmp_base, tmp_len, "deXXXXXX"));
 301 #else
 302   if (!noparserflag)
 303     actfile = mktemp (stringappend (tmp_base, tmp_len, "act.XXXXXX"));
 304   tmpattrsfile = mktemp (stringappend (tmp_base, tmp_len, "attrs.XXXXXX"));
 305   tmptabfile = mktemp (stringappend (tmp_base, tmp_len, "tab.XXXXXX"));
 306   tmpdefsfile = mktemp (stringappend (tmp_base, tmp_len, "defs.XXXXXX"));
 307 #endif /* not MSDOS */
 308
 309   if (!noparserflag)
 310     faction = xfopen (actfile, "w+");
 311   fattrs = xfopen (tmpattrsfile, "w+");
 312   ftable = xfopen (tmptabfile, "w+");
 313
 314   if (definesflag)
 315     {
 316       defsfile = stringappend (name_base, base_length, ".h");
 317       fdefines = xfopen (tmpdefsfile, "w+");
 318     }
 319
 320 #if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 321   if (!noparserflag)
 322     unlink (actfile);
 323   unlink (tmpattrsfile);
 324   unlink (tmptabfile);
 325   unlink (tmpdefsfile);
 326 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 327
 328   /* These are opened by `done' or `open_extra_files', if at all */
 329   if (spec_outfile)
 330     tabfile = spec_outfile;
 331   else
 332     tabfile = stringappend (name_base, base_length, ".c");
 333
 334 #ifdef VMS
 335   attrsfile = stringappend (name_base, short_base_length, "_stype.h");
 336   guardfile = stringappend (name_base, short_base_length, "_guard.c");
 337 #else
 338 #ifdef MSDOS
 339   attrsfile = stringappend (name_base, short_base_length, ".sth");
 340   guardfile = stringappend (name_base, short_base_length, ".guc");
 341 #else
 342   attrsfile = stringappend (name_base, short_base_length, ".stype.h");
 343   guardfile = stringappend (name_base, short_base_length, ".guard.c");
 344 #endif /* not MSDOS */
 345 #endif /* not VMS */
 346 }
 347
 348
 349
 350 /*--------------------------------------------------------------------.
 351 | Open the output files needed only for the semantic parser.  This    |
 352 | is done when %semantic_parser is seen in the declarations section.  |
 353 `--------------------------------------------------------------------*/
 354
 355 void
 356 open_extra_files (void)
 357 {
 358   FILE *ftmp;
 359   int c;
 360   char *filename;
 361 #ifdef MSDOS
 362   char *cp;
 363 #endif
 364
 365   xfclose (fparser);
 366
 367   if (!noparserflag)
 368     {
 369       filename = (char *) getenv ("BISON_HAIRY");
 370 #ifdef MSDOS
 371       /* File doesn't exist in current directory; try in INIT directory.  */
 372       cp = getenv ("INIT");
 373       if (filename == 0 && cp != NULL)
 374         {
 375           filename = xmalloc (strlen (cp) + strlen (PFILE1) + 2);
 376           strcpy (filename, cp);
 377           cp = filename + strlen (filename);
 378           *cp++ = '/';
 379           strcpy (cp, PFILE1);
 380         }
 381 #endif
 382       fparser = xfopen (filename ? filename : PFILE1, "r");
 383     }
 384
 385   /* JF change from inline attrs file to separate one */
 386   ftmp = xfopen (attrsfile, "w");
 387   rewind (fattrs);
 388   while ((c = getc (fattrs)) != EOF)    /* Thank god for buffering */
 389     putc (c, ftmp);
 390   xfclose (fattrs);
 391   fattrs = ftmp;
 392
 393   fguard = xfopen (guardfile, "w");
 394
 395 }
 396
 397 void
 398 done (void)
 399 {
 400   xfclose (faction);
 401   xfclose (fattrs);
 402   xfclose (fguard);
 403   xfclose (finput);
 404   xfclose (fparser);
 405   xfclose (foutput);
 406
 407   /* JF write out the output file */
 408   if (!complain_message_count && ftable)
 409     {
 410       FILE *ftmp;
 411       register int c;
 412
 413       ftmp = xfopen (tabfile, "w");
 414       rewind (ftable);
 415       while ((c = getc (ftable)) != EOF)
 416         putc (c, ftmp);
 417       xfclose (ftmp);
 418       xfclose (ftable);
 419
 420       if (definesflag)
 421         {
 422           ftmp = xfopen (defsfile, "w");
 423           fflush (fdefines);
 424           rewind (fdefines);
 425           while ((c = getc (fdefines)) != EOF)
 426             putc (c, ftmp);
 427           xfclose (ftmp);
 428           xfclose (fdefines);
 429         }
 430     }
 431
 432 #if defined (VMS) & !defined (__VMS_POSIX)
 433   if (faction && !noparserflag)
 434     delete (actfile);
 435   if (fattrs)
 436     delete (tmpattrsfile);
 437   if (ftable)
 438     delete (tmptabfile);
 439 /* Don't call exit again, we're in atexit ().
 440   if (!complain_message_count)
 441     sys$exit(SS$_NORMAL);
 442   sys$exit(SS$_ABORT); */
 443 #else
 444 #if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 445   if (actfile && !noparserflag)
 446     unlink (actfile);
 447   if (tmpattrsfile)
 448     unlink (tmpattrsfile);
 449   if (tmptabfile)
 450     unlink (tmptabfile);
 451   if (tmpdefsfile)
 452     unlink (tmpdefsfile);
 453 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 454 /* Don't call exit again, we're in atexit ().
 455   exit (complain_message_count ? 1 : 0); */
 456 #endif /* not VMS, or __VMS_POSIX */
 457 }