src/files.c

   1 /* Open and close files for bison,
   2    Copyright (C) 1984, 1986, 1989, 1992 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
   7 it 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,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU 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
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 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 <stdio.h>
  45
  46 #ifdef HAVE_UNISTD_H
  47 #include <unistd.h>
  48 #endif
  49
  50 #include "files.h"
  51 #include "alloc.h"
  52 #include "gram.h"
  53 #include "complain.h"
  54
  55 FILE *finput = NULL;
  56 FILE *foutput = NULL;
  57 FILE *fdefines = NULL;
  58 FILE *ftable = NULL;
  59 FILE *fattrs = NULL;
  60 FILE *fguard = NULL;
  61 FILE *faction = NULL;
  62 FILE *fparser = NULL;
  63
  64 /* File name specified with -o for the output file, or 0 if no -o.  */
  65 char *spec_outfile;
  66
  67 char *infile;
  68 char *attrsfile;
  69
  70 static char *outfile;
  71 static char *defsfile;
  72 static char *tabfile;
  73 static char *guardfile;
  74 static char *actfile;
  75 static char *tmpattrsfile;
  76 static char *tmptabfile;
  77 static char *tmpdefsfile;
  78
  79 extern int noparserflag;
  80
  81 extern char     *mktemp();      /* So the compiler won't complain */
  82 extern char     *getenv();
  83
  84 extern char *stringappend PARAMS((const char *, int, const char *));
  85 extern void openfiles PARAMS((void));
  86 extern void open_extra_files PARAMS((void));
  87
  88 int fixed_outfiles = 0;
  89
  90 extern char *program_name;
  91 extern int verboseflag;
  92 extern int definesflag;
  93 \f
  94
  95 char *
  96 stringappend (const char *string1, int end1, const char *string2)
  97 {
  98   register char *ostring;
  99   register char *cp;
 100   register const char *cp1;
 101   register int i;
 102
 103   cp1 = string2;
 104   i = 0;
 105   while (*cp1++) i++;
 106
 107   ostring = NEW2(i+end1+1, char);
 108
 109   cp = ostring;
 110   cp1 = string1;
 111   for (i = 0; i < end1; i++)
 112     *cp++ = *cp1++;
 113
 114   cp1 = string2;
 115   while ((*cp++ = *cp1++))
 116     ;
 117
 118   return ostring;
 119 }
 120
 121 /*-----------------------------------------------------------------.
 122 | Try to open file NAME with mode MODE, and print an error message |
 123 | if fails.                                                        |
 124 `-----------------------------------------------------------------*/
 125
 126 static FILE *
 127 tryopen (const char *name, const char *mode)
 128 {
 129   FILE  *ptr;
 130
 131   ptr = fopen (name, mode);
 132   if (!ptr)
 133     error (2, errno, _("cannot open file `%s'"), name);
 134
 135   return ptr;
 136 }
 137
 138 /*-------------------------------------------------------------.
 139 | Try to close file PTR, and print an error message if fails.  |
 140 `-------------------------------------------------------------*/
 141
 142 static int
 143 tryclose (FILE *ptr)
 144 {
 145   int result;
 146
 147   if (ptr == NULL)
 148     return 0;
 149
 150   result = fclose (ptr);
 151   if (result == EOF)
 152     error (2, errno, _("cannot close file"));
 153
 154   return result;
 155 }
 156 \f
 157 /* JF this has been hacked to death.  Nowaday it sets up the file names for
 158    the output files, and opens the tmp files and the parser */
 159 void
 160 openfiles (void)
 161 {
 162   char *name_base;
 163 #ifdef MSDOS
 164   register char *cp;
 165 #endif
 166   char *filename;
 167   int base_length;
 168   int short_base_length;
 169
 170 #if defined (VMS) & !defined (__VMS_POSIX)
 171   const char *tmp_base = "sys$scratch:b_";
 172 #else
 173   const char *tmp_base = "/tmp/b.";
 174 #endif
 175   int tmp_len;
 176
 177 #ifdef MSDOS
 178   tmp_base = getenv ("TMP");
 179   if (tmp_base == 0)
 180     tmp_base = "";
 181   strlwr (infile);
 182 #endif /* MSDOS */
 183
 184 #if (defined(_WIN32) && !defined(__CYGWIN32__))
 185   tmp_base = getenv ("TEMP");           /* Windows95 defines this ... */
 186   if (tmp_base == 0)
 187     tmp_base = getenv ("Temp");         /* ... while NT prefers this */
 188   if (tmp_base == 0)
 189     tmp_base = "";
 190   strlwr (infile);
 191 #endif /* _WIN32 && !__CYGWIN32__ */
 192
 193 #if (defined(unix) || defined(__unix) || defined(__unix__) || defined(__EMX__))
 194   {
 195     char *tmp_ptr = getenv("TMPDIR");
 196
 197     if (tmp_ptr != 0)
 198       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
 199   }
 200 #endif  /* unix || __unix || __unix__ */
 201
 202   tmp_len = strlen (tmp_base);
 203
 204   if (spec_outfile)
 205     {
 206       /* -o was specified.  The precise -o name will be used for ftable.
 207          For other output files, remove the ".c" or ".tab.c" suffix.  */
 208       name_base = spec_outfile;
 209 #ifdef MSDOS
 210       strlwr (name_base);
 211 #endif /* MSDOS */
 212       /* BASE_LENGTH includes ".tab" but not ".c".  */
 213       base_length = strlen (name_base);
 214       if (!strcmp (name_base + base_length - 2, ".c"))
 215         base_length -= 2;
 216       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 217       short_base_length = base_length;
 218       if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
 219         short_base_length -= 4;
 220       else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
 221         short_base_length -= 4;
 222     }
 223   else if (spec_file_prefix)
 224     {
 225       /* -b was specified.  Construct names from it.  */
 226       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 227       short_base_length = strlen (spec_file_prefix);
 228       /* Count room for `.tab'.  */
 229       base_length = short_base_length + 4;
 230       name_base = (char *) xmalloc (base_length + 1);
 231       /* Append `.tab'.  */
 232       strcpy (name_base, spec_file_prefix);
 233 #ifdef VMS
 234       strcat (name_base, "_tab");
 235 #else
 236       strcat (name_base, ".tab");
 237 #endif
 238 #ifdef MSDOS
 239       strlwr (name_base);
 240 #endif /* MSDOS */
 241     }
 242   else
 243     {
 244       /* -o was not specified; compute output file name from input
 245          or use y.tab.c, etc., if -y was specified.  */
 246
 247       static char FIXED_NAME_BASE[] = "y.y";
 248
 249       name_base = fixed_outfiles ? FIXED_NAME_BASE : infile;
 250
 251       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 252
 253       base_length = strlen (name_base);
 254       if (!strcmp (name_base + base_length - 2, ".y"))
 255         base_length -= 2;
 256       short_base_length = base_length;
 257
 258 #ifdef VMS
 259       name_base = stringappend(name_base, short_base_length, "_tab");
 260 #else
 261 #ifdef MSDOS
 262       name_base = stringappend(name_base, short_base_length, "_tab");
 263 #else
 264       name_base = stringappend(name_base, short_base_length, ".tab");
 265 #endif /* not MSDOS */
 266 #endif
 267       base_length = short_base_length + 4;
 268     }
 269
 270   finput = tryopen(infile, "r");
 271
 272   if (! noparserflag)
 273     {
 274       filename = getenv("BISON_SIMPLE");
 275 #ifdef MSDOS
 276       /* File doesn't exist in current directory; try in INIT directory.  */
 277       cp = getenv("INIT");
 278       if (filename == 0 && cp != NULL)
 279         {
 280           filename = xmalloc(strlen(cp) + strlen(PFILE) + 2);
 281           strcpy(filename, cp);
 282           cp = filename + strlen(filename);
 283           *cp++ = '/';
 284           strcpy(cp, PFILE);
 285         }
 286 #endif /* MSDOS */
 287       fparser = tryopen(filename ? filename : PFILE, "r");
 288     }
 289
 290   if (verboseflag)
 291     {
 292 #ifdef MSDOS
 293       outfile = stringappend(name_base, short_base_length, ".out");
 294 #else
 295       /* We used to use just .out if spec_name_prefix (-p) was used,
 296          but that conflicts with Posix.  */
 297       outfile = stringappend(name_base, short_base_length, ".output");
 298 #endif
 299       foutput = tryopen(outfile, "w");
 300     }
 301
 302   if (noparserflag)
 303     {
 304       /* use permanent name for actions file */
 305       actfile = stringappend(name_base, short_base_length, ".act");
 306       faction = tryopen(actfile, "w");
 307     }
 308
 309 #ifdef MSDOS
 310   if (! noparserflag)
 311     actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX"));
 312   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX"));
 313   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX"));
 314   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX"));
 315 #else
 316   if (! noparserflag)
 317     actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX"));
 318   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX"));
 319   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX"));
 320   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX"));
 321 #endif /* not MSDOS */
 322
 323   if (! noparserflag)
 324     faction = tryopen(actfile, "w+");
 325   fattrs = tryopen(tmpattrsfile,"w+");
 326   ftable = tryopen(tmptabfile, "w+");
 327
 328   if (definesflag)
 329     {
 330       defsfile = stringappend(name_base, base_length, ".h");
 331       fdefines = tryopen(tmpdefsfile, "w+");
 332     }
 333
 334 #if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 335   if (! noparserflag)
 336     unlink(actfile);
 337   unlink(tmpattrsfile);
 338   unlink(tmptabfile);
 339   unlink(tmpdefsfile);
 340 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 341
 342         /* These are opened by `done' or `open_extra_files', if at all */
 343   if (spec_outfile)
 344     tabfile = spec_outfile;
 345   else
 346     tabfile = stringappend(name_base, base_length, ".c");
 347
 348 #ifdef VMS
 349   attrsfile = stringappend(name_base, short_base_length, "_stype.h");
 350   guardfile = stringappend(name_base, short_base_length, "_guard.c");
 351 #else
 352 #ifdef MSDOS
 353   attrsfile = stringappend(name_base, short_base_length, ".sth");
 354   guardfile = stringappend(name_base, short_base_length, ".guc");
 355 #else
 356   attrsfile = stringappend(name_base, short_base_length, ".stype.h");
 357   guardfile = stringappend(name_base, short_base_length, ".guard.c");
 358 #endif /* not MSDOS */
 359 #endif /* not VMS */
 360 }
 361
 362
 363
 364 /*--------------------------------------------------------------------.
 365 | Open the output files needed only for the semantic parser.  This    |
 366 | is done when %semantic_parser is seen in the declarations section.  |
 367 `--------------------------------------------------------------------*/
 368
 369 void
 370 open_extra_files (void)
 371 {
 372   FILE *ftmp;
 373   int c;
 374   char *filename;
 375 #ifdef MSDOS
 376   char *cp;
 377 #endif
 378
 379   tryclose(fparser);
 380
 381   if (! noparserflag)
 382     {
 383       filename = (char *) getenv ("BISON_HAIRY");
 384 #ifdef MSDOS
 385       /* File doesn't exist in current directory; try in INIT directory.  */
 386       cp = getenv("INIT");
 387       if (filename == 0 && cp != NULL)
 388         {
 389           filename = xmalloc(strlen(cp) + strlen(PFILE1) + 2);
 390           strcpy(filename, cp);
 391           cp = filename + strlen(filename);
 392           *cp++ = '/';
 393           strcpy(cp, PFILE1);
 394         }
 395 #endif
 396       fparser= tryopen(filename ? filename : PFILE1, "r");
 397     }
 398
 399                 /* JF change from inline attrs file to separate one */
 400   ftmp = tryopen(attrsfile, "w");
 401   rewind(fattrs);
 402   while((c=getc(fattrs))!=EOF)  /* Thank god for buffering */
 403     putc(c,ftmp);
 404   tryclose(fattrs);
 405   fattrs=ftmp;
 406
 407   fguard = tryopen(guardfile, "w");
 408
 409 }
 410
 411 void
 412 done (void)
 413 {
 414   tryclose(faction);
 415   tryclose(fattrs);
 416   tryclose(fguard);
 417   tryclose(finput);
 418   tryclose(fparser);
 419   tryclose(foutput);
 420
 421   /* JF write out the output file */
 422   if (!complain_message_count && ftable)
 423     {
 424       FILE *ftmp;
 425       register int c;
 426
 427       ftmp=tryopen(tabfile, "w");
 428       rewind(ftable);
 429       while((c=getc(ftable)) != EOF)
 430         putc(c,ftmp);
 431       tryclose(ftmp);
 432       tryclose(ftable);
 433
 434       if (definesflag)
 435         {
 436           ftmp = tryopen(defsfile, "w");
 437           fflush(fdefines);
 438           rewind(fdefines);
 439           while((c=getc(fdefines)) != EOF)
 440             putc(c,ftmp);
 441           tryclose(ftmp);
 442           tryclose(fdefines);
 443         }
 444     }
 445
 446 #if defined (VMS) & !defined (__VMS_POSIX)
 447   if (faction && ! noparserflag)
 448     delete(actfile);
 449   if (fattrs)
 450     delete(tmpattrsfile);
 451   if (ftable)
 452     delete(tmptabfile);
 453 /* Don't call exit again, we're in atexit ().
 454   if (!complain_message_count)
 455     sys$exit(SS$_NORMAL);
 456   sys$exit(SS$_ABORT); */
 457 #else
 458 #if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 459   if (actfile && ! noparserflag) unlink(actfile);
 460   if (tmpattrsfile) unlink(tmpattrsfile);
 461   if (tmptabfile) unlink(tmptabfile);
 462   if (tmpdefsfile) unlink(tmpdefsfile);
 463 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 464 /* Don't call exit again, we're in atexit ().
 465   exit (complain_message_count ? 1 : 0); */
 466 #endif /* not VMS, or __VMS_POSIX */
 467 }