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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 #if defined (VMS) & !defined (__VMS_POSIX)
  22 #include <ssdef.h>
  23 #define unlink delete
  24 #ifndef XPFILE
  25 #define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
  26 #endif
  27 #ifndef XPFILE1
  28 #define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
  29 #endif
  30 #endif
  31
  32 #if defined (_MSC_VER)
  33 #ifndef XPFILE
  34 #define XPFILE "c:/usr/local/lib/bison.simple"
  35 #endif
  36 #ifndef XPFILE1
  37 #define XPFILE1 "c:/usr/local/lib/bison.hairy"
  38 #endif
  39 #endif
  40
  41 #include <stdio.h>
  42 #include "system.h"
  43 #include "files.h"
  44 #include "alloc.h"
  45 #include "gram.h"
  46
  47 FILE *finput = NULL;
  48 FILE *foutput = NULL;
  49 FILE *fdefines = NULL;
  50 FILE *ftable = NULL;
  51 FILE *fattrs = NULL;
  52 FILE *fguard = NULL;
  53 FILE *faction = NULL;
  54 FILE *fparser = NULL;
  55
  56 /* File name specified with -o for the output file, or 0 if no -o.  */
  57 char *spec_outfile;
  58
  59 char *infile;
  60 char *outfile;
  61 char *defsfile;
  62 char *tabfile;
  63 char *attrsfile;
  64 char *guardfile;
  65 char *actfile;
  66 char *tmpattrsfile;
  67 char *tmptabfile;
  68 char *tmpdefsfile;
  69
  70 extern int noparserflag;
  71
  72 extern char     *mktemp();      /* So the compiler won't complain */
  73 extern char     *getenv();
  74 extern void     perror();
  75
  76 char *stringappend PARAMS((char *, int, char *));
  77 void openfiles PARAMS((void));
  78 void open_extra_files PARAMS((void));
  79 FILE *tryopen PARAMS((char *, char *)); /* This might be a good idea */
  80 void done PARAMS((int));
  81
  82 extern char *program_name;
  83 extern int verboseflag;
  84 extern int definesflag;
  85 int fixed_outfiles = 0;
  86 \f
  87
  88 char *
  89 stringappend (char *string1, int end1, char *string2)
  90 {
  91   register char *ostring;
  92   register char *cp, *cp1;
  93   register int i;
  94
  95   cp = string2;  i = 0;
  96   while (*cp++) 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 /* JF this has been hacked to death.  Nowaday it sets up the file names for
 114    the output files, and opens the tmp files and the parser */
 115 void
 116 openfiles (void)
 117 {
 118   char *name_base;
 119   register char *cp;
 120   char *filename;
 121   int base_length;
 122   int short_base_length;
 123
 124 #if defined (VMS) & !defined (__VMS_POSIX)
 125   char *tmp_base = "sys$scratch:b_";
 126 #else
 127   char *tmp_base = "/tmp/b.";
 128 #endif
 129   int tmp_len;
 130
 131 #ifdef MSDOS
 132   tmp_base = getenv ("TMP");
 133   if (tmp_base == 0)
 134     tmp_base = "";
 135   strlwr (infile);
 136 #endif /* MSDOS */
 137
 138 #if (defined(_WIN32) && !defined(__CYGWIN32__))
 139   tmp_base = getenv ("TEMP");           /* Windows95 defines this ... */
 140   if (tmp_base == 0)
 141     tmp_base = getenv ("Temp");         /* ... while NT prefers this */
 142   if (tmp_base == 0)
 143     tmp_base = "";
 144   strlwr (infile);
 145 #endif /* _WIN32 && !__CYGWIN32__ */
 146
 147 #if (defined(unix) || defined(__unix) || defined(__unix__))
 148   {
 149     char *tmp_ptr = getenv("TMPDIR");
 150
 151     if (tmp_ptr != 0)
 152       tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
 153   }
 154 #endif  /* unix || __unix || __unix__ */
 155
 156   tmp_len = strlen (tmp_base);
 157
 158   if (spec_outfile)
 159     {
 160       /* -o was specified.  The precise -o name will be used for ftable.
 161          For other output files, remove the ".c" or ".tab.c" suffix.  */
 162       name_base = spec_outfile;
 163 #ifdef MSDOS
 164       strlwr (name_base);
 165 #endif /* MSDOS */
 166       /* BASE_LENGTH includes ".tab" but not ".c".  */
 167       base_length = strlen (name_base);
 168       if (!strcmp (name_base + base_length - 2, ".c"))
 169         base_length -= 2;
 170       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 171       short_base_length = base_length;
 172       if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
 173         short_base_length -= 4;
 174       else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
 175         short_base_length -= 4;
 176     }
 177   else if (spec_file_prefix)
 178     {
 179       /* -b was specified.  Construct names from it.  */
 180       /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
 181       short_base_length = strlen (spec_file_prefix);
 182       /* Count room for `.tab'.  */
 183       base_length = short_base_length + 4;
 184       name_base = (char *) xmalloc (base_length + 1);
 185       /* Append `.tab'.  */
 186       strcpy (name_base, spec_file_prefix);
 187 #ifdef VMS
 188       strcat (name_base, "_tab");
 189 #else
 190       strcat (name_base, ".tab");
 191 #endif
 192 #ifdef MSDOS
 193       strlwr (name_base);
 194 #endif /* MSDOS */
 195     }
 196   else
 197     {
 198       /* -o was not specified; compute output file name from input
 199          or use y.tab.c, etc., if -y was specified.  */
 200
 201       name_base = fixed_outfiles ? "y.y" : infile;
 202
 203       /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */
 204
 205       base_length = strlen (name_base);
 206       if (!strcmp (name_base + base_length - 2, ".y"))
 207         base_length -= 2;
 208       short_base_length = base_length;
 209
 210 #ifdef VMS
 211       name_base = stringappend(name_base, short_base_length, "_tab");
 212 #else
 213 #ifdef MSDOS
 214       name_base = stringappend(name_base, short_base_length, "_tab");
 215 #else
 216       name_base = stringappend(name_base, short_base_length, ".tab");
 217 #endif /* not MSDOS */
 218 #endif
 219       base_length = short_base_length + 4;
 220     }
 221
 222   finput = tryopen(infile, "r");
 223
 224   if (! noparserflag)
 225     {
 226       filename = getenv("BISON_SIMPLE");
 227 #ifdef MSDOS
 228       /* File doesn't exist in current directory; try in INIT directory.  */
 229       cp = getenv("INIT");
 230       if (filename == 0 && cp != NULL)
 231         {
 232           filename = xmalloc(strlen(cp) + strlen(PFILE) + 2);
 233           strcpy(filename, cp);
 234           cp = filename + strlen(filename);
 235           *cp++ = '/';
 236           strcpy(cp, PFILE);
 237         }
 238 #endif /* MSDOS */
 239       fparser = tryopen(filename ? filename : PFILE, "r");
 240     }
 241
 242   if (verboseflag)
 243     {
 244 #ifdef MSDOS
 245       outfile = stringappend(name_base, short_base_length, ".out");
 246 #else
 247       /* We used to use just .out if spec_name_prefix (-p) was used,
 248          but that conflicts with Posix.  */
 249       outfile = stringappend(name_base, short_base_length, ".output");
 250 #endif
 251       foutput = tryopen(outfile, "w");
 252     }
 253
 254   if (noparserflag)
 255     {
 256       /* use permanent name for actions file */
 257       actfile = stringappend(name_base, short_base_length, ".act");
 258       faction = tryopen(actfile, "w");
 259     }
 260
 261 #ifdef MSDOS
 262   if (! noparserflag)
 263     actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX"));
 264   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX"));
 265   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX"));
 266   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX"));
 267 #else
 268   if (! noparserflag)
 269     actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX"));
 270   tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX"));
 271   tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX"));
 272   tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX"));
 273 #endif /* not MSDOS */
 274
 275   if (! noparserflag)
 276     faction = tryopen(actfile, "w+");
 277   fattrs = tryopen(tmpattrsfile,"w+");
 278   ftable = tryopen(tmptabfile, "w+");
 279
 280   if (definesflag)
 281     {
 282       defsfile = stringappend(name_base, base_length, ".h");
 283       fdefines = tryopen(tmpdefsfile, "w+");
 284     }
 285
 286 #if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 287   if (! noparserflag)
 288     unlink(actfile);
 289   unlink(tmpattrsfile);
 290   unlink(tmptabfile);
 291   unlink(tmpdefsfile);
 292 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 293
 294         /* These are opened by `done' or `open_extra_files', if at all */
 295   if (spec_outfile)
 296     tabfile = spec_outfile;
 297   else
 298     tabfile = stringappend(name_base, base_length, ".c");
 299
 300 #ifdef VMS
 301   attrsfile = stringappend(name_base, short_base_length, "_stype.h");
 302   guardfile = stringappend(name_base, short_base_length, "_guard.c");
 303 #else
 304 #ifdef MSDOS
 305   attrsfile = stringappend(name_base, short_base_length, ".sth");
 306   guardfile = stringappend(name_base, short_base_length, ".guc");
 307 #else
 308   attrsfile = stringappend(name_base, short_base_length, ".stype.h");
 309   guardfile = stringappend(name_base, short_base_length, ".guard.c");
 310 #endif /* not MSDOS */
 311 #endif /* not VMS */
 312 }
 313
 314
 315
 316 /* open the output files needed only for the semantic parser.
 317 This is done when %semantic_parser is seen in the declarations section.  */
 318
 319 void
 320 open_extra_files (void)
 321 {
 322   FILE *ftmp;
 323   int c;
 324   char *filename, *cp;
 325
 326   if (fparser)
 327     fclose(fparser);
 328
 329   if (! noparserflag)
 330     {
 331       filename = (char *) getenv ("BISON_HAIRY");
 332 #ifdef MSDOS
 333       /* File doesn't exist in current directory; try in INIT directory.  */
 334       cp = getenv("INIT");
 335       if (filename == 0 && cp != NULL)
 336         {
 337           filename = xmalloc(strlen(cp) + strlen(PFILE1) + 2);
 338           strcpy(filename, cp);
 339           cp = filename + strlen(filename);
 340           *cp++ = '/';
 341           strcpy(cp, PFILE1);
 342         }
 343 #endif
 344       fparser= tryopen(filename ? filename : PFILE1, "r");
 345     }
 346
 347                 /* JF change from inline attrs file to separate one */
 348   ftmp = tryopen(attrsfile, "w");
 349   rewind(fattrs);
 350   while((c=getc(fattrs))!=EOF)  /* Thank god for buffering */
 351     putc(c,ftmp);
 352   fclose(fattrs);
 353   fattrs=ftmp;
 354
 355   fguard = tryopen(guardfile, "w");
 356
 357 }
 358
 359         /* JF to make file opening easier.  This func tries to open file
 360            NAME with mode MODE, and prints an error message if it fails. */
 361 FILE *
 362 tryopen (char *name, char *mode)
 363 {
 364   FILE  *ptr;
 365
 366   ptr = fopen(name, mode);
 367   if (ptr == NULL)
 368     {
 369       fprintf(stderr, "%s: ", program_name);
 370       perror(name);
 371       done(2);
 372     }
 373   return ptr;
 374 }
 375
 376 void
 377 done (int k)
 378 {
 379   if (faction)
 380     fclose(faction);
 381
 382   if (fattrs)
 383     fclose(fattrs);
 384
 385   if (fguard)
 386     fclose(fguard);
 387
 388   if (finput)
 389     fclose(finput);
 390
 391   if (fparser)
 392     fclose(fparser);
 393
 394   if (foutput)
 395     fclose(foutput);
 396
 397         /* JF write out the output file */
 398   if (k == 0 && ftable)
 399     {
 400       FILE *ftmp;
 401       register int c;
 402
 403       ftmp=tryopen(tabfile, "w");
 404       rewind(ftable);
 405       while((c=getc(ftable)) != EOF)
 406         putc(c,ftmp);
 407       fclose(ftmp);
 408       fclose(ftable);
 409
 410       if (definesflag)
 411         {
 412           ftmp = tryopen(defsfile, "w");
 413           fflush(fdefines);
 414           rewind(fdefines);
 415           while((c=getc(fdefines)) != EOF)
 416             putc(c,ftmp);
 417           fclose(ftmp);
 418           fclose(fdefines);
 419         }
 420     }
 421
 422 #if defined (VMS) & !defined (__VMS_POSIX)
 423   if (faction && ! noparserflag)
 424     delete(actfile);
 425   if (fattrs)
 426     delete(tmpattrsfile);
 427   if (ftable)
 428     delete(tmptabfile);
 429   if (k==0) sys$exit(SS$_NORMAL);
 430   sys$exit(SS$_ABORT);
 431 #else
 432 #if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
 433   if (actfile && ! noparserflag) unlink(actfile);
 434   if (tmpattrsfile) unlink(tmpattrsfile);
 435   if (tmptabfile) unlink(tmptabfile);
 436   if (tmpdefsfile) unlink(tmpdefsfile);
 437 #endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
 438   exit(k);
 439 #endif /* not VMS, or __VMS_POSIX */
 440 }