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