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