src/files.c

/* Open and close files for bison,
   Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.

This file is part of Bison, the GNU Compiler Compiler.

Bison is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

Bison is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Bison; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


#if defined (VMS) & !defined (__VMS_POSIX)
#include <ssdef.h>
#define unlink delete
#ifndef XPFILE
#define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
#endif
#ifndef XPFILE1
#define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
#endif
#endif

#if defined (_MSC_VER)
#ifndef XPFILE
#define XPFILE "c:/usr/local/lib/bison.simple"
#endif
#ifndef XPFILE1
#define XPFILE1 "c:/usr/local/lib/bison.hairy"
#endif
#endif

#include <stdio.h>
#include "system.h"
#include "files.h"
#include "alloc.h"
#include "gram.h"

FILE *finput = NULL;
FILE *foutput = NULL;
FILE *fdefines = NULL;
FILE *ftable = NULL;
FILE *fattrs = NULL;
FILE *fguard = NULL;
FILE *faction = NULL;
FILE *fparser = NULL;

/* File name specified with -o for the output file, or 0 if no -o.  */
char *spec_outfile;

char *infile;
char *outfile;
char *defsfile;
char *tabfile;
char *attrsfile;
char *guardfile;
char *actfile;
char *tmpattrsfile;
char *tmptabfile;
char *tmpdefsfile;

extern int noparserflag;

extern char	*mktemp();	/* So the compiler won't complain */
extern char	*getenv();
extern void	perror();

char *stringappend PARAMS((char *, int, char *));
void openfiles PARAMS((void));
void open_extra_files PARAMS((void));
FILE *tryopen PARAMS((char *, char *));	/* This might be a good idea */
int tryclose PARAMS((FILE *));
void done PARAMS((int));

extern char *program_name;
extern int verboseflag;
extern int definesflag;
int fixed_outfiles = 0;
\f

char *
stringappend (char *string1, int end1, char *string2)
{
  register char *ostring;
  register char *cp, *cp1;
  register int i;

  cp = string2;  i = 0;
  while (*cp++) i++;

  ostring = NEW2(i+end1+1, char);

  cp = ostring;
  cp1 = string1;
  for (i = 0; i < end1; i++)
    *cp++ = *cp1++;

  cp1 = string2;
  while ((*cp++ = *cp1++))
    ;

  return ostring;
}


/* JF this has been hacked to death.  Nowaday it sets up the file names for
   the output files, and opens the tmp files and the parser */
void
openfiles (void)
{
  char *name_base;
#ifdef MSDOS
  register char *cp;
#endif
  char *filename;
  int base_length;
  int short_base_length;

#if defined (VMS) & !defined (__VMS_POSIX)
  char *tmp_base = "sys$scratch:b_";
#else
  char *tmp_base = "/tmp/b.";
#endif
  int tmp_len;

#ifdef MSDOS
  tmp_base = getenv ("TMP");
  if (tmp_base == 0)
    tmp_base = "";
  strlwr (infile);
#endif /* MSDOS */

#if (defined(_WIN32) && !defined(__CYGWIN32__))
  tmp_base = getenv ("TEMP");		/* Windows95 defines this ... */
  if (tmp_base == 0)
    tmp_base = getenv ("Temp");		/* ... while NT prefers this */
  if (tmp_base == 0)
    tmp_base = "";
  strlwr (infile);
#endif /* _WIN32 && !__CYGWIN32__ */

#if (defined(unix) || defined(__unix) || defined(__unix__))
  {
    char *tmp_ptr = getenv("TMPDIR");

    if (tmp_ptr != 0)
      tmp_base = stringappend (tmp_ptr, strlen (tmp_ptr), "/b.");
  }
#endif  /* unix || __unix || __unix__ */

  tmp_len = strlen (tmp_base);

  if (spec_outfile)
    {
      /* -o was specified.  The precise -o name will be used for ftable.
	 For other output files, remove the ".c" or ".tab.c" suffix.  */
      name_base = spec_outfile;
#ifdef MSDOS
      strlwr (name_base);
#endif /* MSDOS */
      /* BASE_LENGTH includes ".tab" but not ".c".  */
      base_length = strlen (name_base);
      if (!strcmp (name_base + base_length - 2, ".c"))
	base_length -= 2;
      /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
      short_base_length = base_length;
      if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
	short_base_length -= 4;
      else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
	short_base_length -= 4;
    }
  else if (spec_file_prefix)
    {
      /* -b was specified.  Construct names from it.  */
      /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c".  */
      short_base_length = strlen (spec_file_prefix);
      /* Count room for `.tab'.  */
      base_length = short_base_length + 4;
      name_base = (char *) xmalloc (base_length + 1);
      /* Append `.tab'.  */
      strcpy (name_base, spec_file_prefix);
#ifdef VMS
      strcat (name_base, "_tab");
#else
      strcat (name_base, ".tab");
#endif
#ifdef MSDOS
      strlwr (name_base);
#endif /* MSDOS */
    }
  else
    {
      /* -o was not specified; compute output file name from input
	 or use y.tab.c, etc., if -y was specified.  */

      name_base = fixed_outfiles ? "y.y" : infile;

      /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any.  */

      base_length = strlen (name_base);
      if (!strcmp (name_base + base_length - 2, ".y"))
	base_length -= 2;
      short_base_length = base_length;

#ifdef VMS
      name_base = stringappend(name_base, short_base_length, "_tab");
#else
#ifdef MSDOS
      name_base = stringappend(name_base, short_base_length, "_tab");
#else
      name_base = stringappend(name_base, short_base_length, ".tab");
#endif /* not MSDOS */
#endif
      base_length = short_base_length + 4;
    }

  finput = tryopen(infile, "r");

  if (! noparserflag)
    {
      filename = getenv("BISON_SIMPLE");
#ifdef MSDOS
      /* File doesn't exist in current directory; try in INIT directory.  */
      cp = getenv("INIT");
      if (filename == 0 && cp != NULL)
        {
          filename = xmalloc(strlen(cp) + strlen(PFILE) + 2);
          strcpy(filename, cp);
          cp = filename + strlen(filename);
          *cp++ = '/';
          strcpy(cp, PFILE);
        }
#endif /* MSDOS */
      fparser = tryopen(filename ? filename : PFILE, "r");
    }

  if (verboseflag)
    {
#ifdef MSDOS
      outfile = stringappend(name_base, short_base_length, ".out");
#else
      /* We used to use just .out if spec_name_prefix (-p) was used,
	 but that conflicts with Posix.  */
      outfile = stringappend(name_base, short_base_length, ".output");
#endif
      foutput = tryopen(outfile, "w");
    }

  if (noparserflag)
    {
      /* use permanent name for actions file */
      actfile = stringappend(name_base, short_base_length, ".act");
      faction = tryopen(actfile, "w");
    }

#ifdef MSDOS
  if (! noparserflag)
    actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX"));
  tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX"));
  tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX"));
  tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX"));
#else
  if (! noparserflag)
    actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX"));
  tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX"));
  tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX"));
  tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX"));
#endif /* not MSDOS */

  if (! noparserflag)
    faction = tryopen(actfile, "w+");
  fattrs = tryopen(tmpattrsfile,"w+");
  ftable = tryopen(tmptabfile, "w+");

  if (definesflag)
    {
      defsfile = stringappend(name_base, base_length, ".h");
      fdefines = tryopen(tmpdefsfile, "w+");
    }

#if !(defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
  if (! noparserflag)
    unlink(actfile);
  unlink(tmpattrsfile);
  unlink(tmptabfile);
  unlink(tmpdefsfile);
#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */

	/* These are opened by `done' or `open_extra_files', if at all */
  if (spec_outfile)
    tabfile = spec_outfile;
  else
    tabfile = stringappend(name_base, base_length, ".c");

#ifdef VMS
  attrsfile = stringappend(name_base, short_base_length, "_stype.h");
  guardfile = stringappend(name_base, short_base_length, "_guard.c");
#else
#ifdef MSDOS
  attrsfile = stringappend(name_base, short_base_length, ".sth");
  guardfile = stringappend(name_base, short_base_length, ".guc");
#else
  attrsfile = stringappend(name_base, short_base_length, ".stype.h");
  guardfile = stringappend(name_base, short_base_length, ".guard.c");
#endif /* not MSDOS */
#endif /* not VMS */
}


/* open the output files needed only for the semantic parser.
This is done when %semantic_parser is seen in the declarations section.  */

void
open_extra_files (void)
{
  FILE *ftmp;
  int c;
  char *filename;
#ifdef MSDOS
  char *cp;
#endif

  tryclose(fparser);

  if (! noparserflag)
    {
      filename = (char *) getenv ("BISON_HAIRY");
#ifdef MSDOS
      /* File doesn't exist in current directory; try in INIT directory.  */
      cp = getenv("INIT");
      if (filename == 0 && cp != NULL)
        {
          filename = xmalloc(strlen(cp) + strlen(PFILE1) + 2);
          strcpy(filename, cp);
          cp = filename + strlen(filename);
          *cp++ = '/';
          strcpy(cp, PFILE1);
        }
#endif
      fparser= tryopen(filename ? filename : PFILE1, "r");
    }

		/* JF change from inline attrs file to separate one */
  ftmp = tryopen(attrsfile, "w");
  rewind(fattrs);
  while((c=getc(fattrs))!=EOF)	/* Thank god for buffering */
    putc(c,ftmp);
  tryclose(fattrs);
  fattrs=ftmp;

  fguard = tryopen(guardfile, "w");

}

	/* JF to make file opening easier.  This func tries to open file
	   NAME with mode MODE, and prints an error message if it fails. */
FILE *
tryopen (char *name, char *mode)
{
  FILE	*ptr;

  ptr = fopen(name, mode);
  if (ptr == NULL)
    {
      fprintf(stderr, "%s: ", program_name);
      perror(name);
      done(2);
    }
  return ptr;
}

int
tryclose (FILE *ptr)
{
  int result;

  if (ptr == NULL)
    return 0;

  result = fclose (ptr);
  if (result == EOF)
    {
      fprintf (stderr, "%s: ", program_name);
      perror ("fclose");
      done (2);
    }
  return result;
}

void
done (int k)
{
  tryclose(faction);
  tryclose(fattrs);
  tryclose(fguard);
  tryclose(finput);
  tryclose(fparser);
  tryclose(foutput);

	/* JF write out the output file */
  if (k == 0 && ftable)
    {
      FILE *ftmp;
      register int c;

      ftmp=tryopen(tabfile, "w");
      rewind(ftable);
      while((c=getc(ftable)) != EOF)
        putc(c,ftmp);
      tryclose(ftmp);
      tryclose(ftable);

      if (definesflag)
        {
          ftmp = tryopen(defsfile, "w");
          fflush(fdefines);
          rewind(fdefines);
          while((c=getc(fdefines)) != EOF)
            putc(c,ftmp);
          tryclose(ftmp);
          tryclose(fdefines);
        }
    }

#if defined (VMS) & !defined (__VMS_POSIX)
  if (faction && ! noparserflag)
    delete(actfile);
  if (fattrs)
    delete(tmpattrsfile);
  if (ftable)
    delete(tmptabfile);
  if (k==0) sys$exit(SS$_NORMAL);
  sys$exit(SS$_ABORT);
#else
#if (defined (MSDOS) || (defined(_WIN32) && !defined(__CYGWIN32__)))
  if (actfile && ! noparserflag) unlink(actfile);
  if (tmpattrsfile) unlink(tmpattrsfile);
  if (tmptabfile) unlink(tmptabfile);
  if (tmpdefsfile) unlink(tmpdefsfile);
#endif /* MSDOS || (_WIN32 && !__CYGWIN32__) */
  exit(k);
#endif /* not VMS, or __VMS_POSIX */
}
Commit	Line	Data
	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	}