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