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 int fixed_outfiles = 0;
  78
  79 extern char *program_name;
  80 \f
  81
  82 static char *
  83 stringappend (const char *string1, int end1, const char *string2)
  84 {
  85   register char *ostring;
  86   register char *cp;
  87   register const char *cp1;
  88   register int i;
  89
  90   cp1 = string2;
  91   i = 0;
  92   while (*cp1++)
  93     i++;
  94
  95   ostring = NEW2 (i + end1 + 1, char);
  96
  97   cp = ostring;
  98   cp1 = string1;
  99   for (i = 0; i < end1; i++)
 100     *cp++ = *cp1++;
 101
 102   cp1 = string2;
 103   while ((*cp++ = *cp1++))
 104     ;
 105
 106   return ostring;
 107 }
 108
 109 /*-----------------------------------------------------------------.
 110 | Try to open file NAME with mode MODE, and print an error message |
 111 | if fails.                                                        |
 112 `-----------------------------------------------------------------*/
 113
 114 static FILE *
 115 xfopen (const char *name, const char *mode)
 116 {
 117   FILE *ptr;
 118
 119   ptr = fopen (name, mode);
 120   if (!ptr)
 121     error (2, errno, _("cannot open file `%s'"), name);
 122
 123   return ptr;
 124 }
 125
 126 /*-------------------------------------------------------------.
 127 | Try to close file PTR, and print an error message if fails.  |
 128 `-------------------------------------------------------------*/
 129
 130 static int
 131 xfclose (FILE *ptr)
 132 {
 133   int result;
 134
 135   if (ptr == NULL)
 136     return 0;
 137
 138   result = fclose (ptr);
 139   if (result == EOF)
 140     error (2, errno, _("cannot close file"));
 141
 142   return result;
 143 }
 144 \f
 145 /* JF this has been hacked to death.  Nowaday it sets up the file names for
 146    the output files, and opens the tmp files and the parser */
 147 void
 148 open_files (void)
 149 {
 150   char *name_base;
 151 #ifdef MSDOS
 152   register char *cp;
 153 #endif
 154   char *filename;
 155   int base_length;
 156   int short_base_length;
 157
 158 #if defined (VMS) & !defined (__VMS_POSIX)
 159   const char *tmp_base = "sys$scratch:b_";
 160 #else
 161   const char *tmp_base = "/tmp/b.";
 162 #endif
 163   int tmp_len;
 164
 165 #ifdef MSDOS
 166   tmp_base = getenv ("TMP");
 167   if (tmp_base == 0)
 168     tmp_base = "";
 169   strlwr (infile);
 170 #endif /* MSDOS */
 171
 172 #if (defined(_WIN32) && !defined(__CYGWIN32__))
 173   tmp_base = getenv ("TEMP");   /* Windows95 defines this ... */
 174   if (tmp_base == 0)
 175     tmp_base = getenv ("Temp"); /* ... while NT prefers this */
 176   if (tmp_base == 0)
 177     tmp_base = "";
 178   strlwr (infile);
 179 #endif /* _WIN32 && !__CYGWIN32__ */
 180
 181 #if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__))
 182   {
 183     char *tmp_ptr = getenv ("TMPDIR");
 184
 185     if (tmp_ptr != 0)
 186       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
 187   }
 188 #endif /* unix || __unix || __unix__ */
 189
 190   tmp_len = strlen (tmp_base);
 191
 192   if (spec_outfile)
 193     {
 194       /* -o was specified.  The precise -o name will be used for ftable.
 195          For other output files, remove the ".c" or ".tab.c" suffix.  */
 196       name_base = spec_outfile;
 197 #ifdef MSDOS
 198       strlwr (name_base);
 199 #endif /* MSDOS */
 200       /* BASE_LENGTH includes ".tab" but not ".c".  */
 201       base_length = strlen (name_base);
 202       if (!strcmp (name_base + base_length - 2, ".c"))
 203         base_length -= 2;
 204       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 205       short_base_length = base_length;
 206       if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
 207         short_base_length -= 4;
 208       else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
 209         short_base_length -= 4;
 210     }
 211   else if (spec_file_prefix)
 212     {
 213       /* -b was specified.  Construct names from it.  */
 214       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 215       short_base_length = strlen (spec_file_prefix);
 216       /* Count room for `.tab'.  */
 217       base_length = short_base_length + 4;
 218       name_base = (char *) xmalloc (base_length + 1);
 219       /* Append `.tab'.  */
 220       strcpy (name_base, spec_file_prefix);
 221 #ifdef VMS
 222       strcat (name_base, "_tab");
 223 #else
 224       strcat (name_base, ".tab");
 225 #endif
 226 #ifdef MSDOS
 227       strlwr (name_base);
 228 #endif /* MSDOS */
 229     }
 230   else
 231     {
 232       /* -o was not specified; compute output file name from input
 233          or use y.tab.c, etc., if -y was specified.  */
 234
 235       static char FIXED_NAME_BASE[] = "y.y";
 236
 237       name_base = fixed_outfiles ? FIXED_NAME_BASE : infile;
 238
 239       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 240
 241       base_length = strlen (name_base);
 242       if (!strcmp (name_base + base_length - 2, ".y"))
 243         base_length -= 2;
 244       short_base_length = base_length;
 245
 246 #ifdef VMS
 247       name_base = stringappend (name_base, short_base_length, "_tab");
 248 #else
 249 #ifdef MSDOS
 250       name_base = stringappend (name_base, short_base_length, "_tab");
 251 #else
 252       name_base = stringappend (name_base, short_base_length, ".tab");
 253 #endif /* not MSDOS */
 254 #endif
 255       base_length = short_base_length + 4;
 256     }
 257
 258   finput = xfopen (infile, "r");
 259
 260   if (!noparserflag)
 261     {
 262       filename = getenv ("BISON_SIMPLE");
 263 #ifdef MSDOS
 264       /* File doesn't exist in current directory; try in INIT directory.  */
 265       cp = getenv ("INIT");
 266       if (filename == 0 && cp != NULL)
 267         {
 268           filename = xmalloc (strlen (cp) + strlen (PFILE) + 2);
 269           strcpy (filename, cp);
 270           cp = filename + strlen (filename);
 271           *cp++ = '/';
 272           strcpy (cp, PFILE);
 273         }
 274 #endif /* MSDOS */
 275       fparser = xfopen (filename ? filename : PFILE, "r");
 276     }
 277
 278   if (verboseflag)
 279     {
 280 #ifdef MSDOS
 281       outfile = stringappend (name_base, short_base_length, ".out");
 282 #else
 283       /* We used to use just .out if spec_name_prefix (-p) was used,
 284          but that conflicts with Posix.  */
 285       outfile = stringappend (name_base, short_base_length, ".output");
 286 #endif
 287       foutput = xfopen (outfile, "w");
 288     }
 289
 290   if (noparserflag)
 291     {
 292       /* use permanent name for actions file */
 293       actfile = stringappend (name_base, short_base_length, ".act");
 294       faction = xfopen (actfile, "w");
 295     }
 296
 297 #ifdef MSDOS
 298   if (!noparserflag)
 299     actfile = mktemp (stringappend (tmp_base, tmp_len, "acXXXXXX"));
 300   tmpattrsfile = mktemp (stringappend (tmp_base, tmp_len, "atXXXXXX"));
 301   tmptabfile = mktemp (stringappend (tmp_base, tmp_len, "taXXXXXX"));
 302   tmpdefsfile = mktemp (stringappend (tmp_base, tmp_len, "deXXXXXX"));
 303 #else
 304   if (!noparserflag)
 305     actfile = mktemp (stringappend (tmp_base, tmp_len, "act.XXXXXX"));
 306   tmpattrsfile = mktemp (stringappend (tmp_base, tmp_len, "attrs.XXXXXX"));
 307   tmptabfile = mktemp (stringappend (tmp_base, tmp_len, "tab.XXXXXX"));
 308   tmpdefsfile = mktemp (stringappend (tmp_base, tmp_len, "defs.XXXXXX"));
 309 #endif /* not MSDOS */
 310
 311   if (!noparserflag)
 312     faction = xfopen (actfile, "w+");
 313   fattrs = xfopen (tmpattrsfile, "w+");
 314   ftable = xfopen (tmptabfile, "w+");
 315
 316   if (definesflag)
 317     {
 318       defsfile = stringappend (name_base, base_length, ".h");
 319       fdefines = xfopen (tmpdefsfile, "w+");
 320     }
 321
 322 #if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 323   if (!noparserflag)
 324     unlink (actfile);
 325   unlink (tmpattrsfile);
 326   unlink (tmptabfile);
 327   unlink (tmpdefsfile);
 328 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 329
 330   /* These are opened by `done' or `open_extra_files', if at all */
 331   if (spec_outfile)
 332     tabfile = spec_outfile;
 333   else
 334     tabfile = stringappend (name_base, base_length, ".c");
 335
 336 #ifdef VMS
 337   attrsfile = stringappend (name_base, short_base_length, "_stype.h");
 338   guardfile = stringappend (name_base, short_base_length, "_guard.c");
 339 #else
 340 #ifdef MSDOS
 341   attrsfile = stringappend (name_base, short_base_length, ".sth");
 342   guardfile = stringappend (name_base, short_base_length, ".guc");
 343 #else
 344   attrsfile = stringappend (name_base, short_base_length, ".stype.h");
 345   guardfile = stringappend (name_base, short_base_length, ".guard.c");
 346 #endif /* not MSDOS */
 347 #endif /* not VMS */
 348 }
 349
 350
 351
 352 /*--------------------------------------------------------------------.
 353 | Open the output files needed only for the semantic parser.  This    |
 354 | is done when %semantic_parser is seen in the declarations section.  |
 355 `--------------------------------------------------------------------*/
 356
 357 void
 358 open_extra_files (void)
 359 {
 360   FILE *ftmp;
 361   int c;
 362   char *filename;
 363 #ifdef MSDOS
 364   char *cp;
 365 #endif
 366
 367   xfclose (fparser);
 368
 369   if (!noparserflag)
 370     {
 371       filename = (char *) getenv ("BISON_HAIRY");
 372 #ifdef MSDOS
 373       /* File doesn't exist in current directory; try in INIT directory.  */
 374       cp = getenv ("INIT");
 375       if (filename == 0 && cp != NULL)
 376         {
 377           filename = xmalloc (strlen (cp) + strlen (PFILE1) + 2);
 378           strcpy (filename, cp);
 379           cp = filename + strlen (filename);
 380           *cp++ = '/';
 381           strcpy (cp, PFILE1);
 382         }
 383 #endif
 384       fparser = xfopen (filename ? filename : PFILE1, "r");
 385     }
 386
 387   /* JF change from inline attrs file to separate one */
 388   ftmp = xfopen (attrsfile, "w");
 389   rewind (fattrs);
 390   while ((c = getc (fattrs)) != EOF)    /* Thank god for buffering */
 391     putc (c, ftmp);
 392   xfclose (fattrs);
 393   fattrs = ftmp;
 394
 395   fguard = xfopen (guardfile, "w");
 396
 397 }
 398
 399 void
 400 done (void)
 401 {
 402   xfclose (faction);
 403   xfclose (fattrs);
 404   xfclose (fguard);
 405   xfclose (finput);
 406   xfclose (fparser);
 407   xfclose (foutput);
 408
 409   /* JF write out the output file */
 410   if (!complain_message_count && ftable)
 411     {
 412       FILE *ftmp;
 413       register int c;
 414
 415       ftmp = xfopen (tabfile, "w");
 416       rewind (ftable);
 417       while ((c = getc (ftable)) != EOF)
 418         putc (c, ftmp);
 419       xfclose (ftmp);
 420       xfclose (ftable);
 421
 422       if (definesflag)
 423         {
 424           ftmp = xfopen (defsfile, "w");
 425           fflush (fdefines);
 426           rewind (fdefines);
 427           while ((c = getc (fdefines)) != EOF)
 428             putc (c, ftmp);
 429           xfclose (ftmp);
 430           xfclose (fdefines);
 431         }
 432     }
 433
 434 #if defined (VMS) & !defined (__VMS_POSIX)
 435   if (faction && !noparserflag)
 436     delete (actfile);
 437   if (fattrs)
 438     delete (tmpattrsfile);
 439   if (ftable)
 440     delete (tmptabfile);
 441 /* Don't call exit again, we're in atexit ().
 442   if (!complain_message_count)
 443     sys$exit(SS$_NORMAL);
 444   sys$exit(SS$_ABORT); */
 445 #else
 446 #if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 447   if (actfile && !noparserflag)
 448     unlink (actfile);
 449   if (tmpattrsfile)
 450     unlink (tmpattrsfile);
 451   if (tmptabfile)
 452     unlink (tmptabfile);
 453   if (tmpdefsfile)
 454     unlink (tmpdefsfile);
 455 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 456 /* Don't call exit again, we're in atexit ().
 457   exit (complain_message_count ? 1 : 0); */
 458 #endif /* not VMS, or __VMS_POSIX */
 459 }