This is files.c in view mode; [Download] [Up]
/* Open and close files for bison,
Copyright (C) 1984, 1986, 1989 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef VMS
#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
#include <stdio.h>
#include "system.h"
#include "files.h"
#include "new.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 char *mktemp(); /* So the compiler won't complain */
extern char *getenv();
extern void perror();
FILE *tryopen(); /* This might be a good idea */
void done();
extern char *program_name;
extern int verboseflag;
extern int definesflag;
int fixed_outfiles = 0;
char*
stringappend(string1, end1, string2)
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()
{
char *name_base;
register char *cp;
char *filename;
int base_length;
int short_base_length;
#ifdef VMS
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 */
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");
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");
}
#ifdef MSDOS
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
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 */
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+");
}
#ifndef MSDOS
unlink(actfile);
unlink(tmpattrsfile);
unlink(tmptabfile);
unlink(tmpdefsfile);
#endif
/* 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()
{
FILE *ftmp;
int c;
char *filename, *cp;
fclose(fparser);
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);
fclose(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(name, mode)
char *name;
char *mode;
{
FILE *ptr;
ptr = fopen(name, mode);
if (ptr == NULL)
{
fprintf(stderr, "%s: ", program_name);
perror(name);
done(2);
}
return ptr;
}
void
done(k)
int k;
{
if (faction)
fclose(faction);
if (fattrs)
fclose(fattrs);
if (fguard)
fclose(fguard);
if (finput)
fclose(finput);
if (fparser)
fclose(fparser);
if (foutput)
fclose(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);
fclose(ftmp);
fclose(ftable);
if (definesflag)
{
ftmp = tryopen(defsfile, "w");
fflush(fdefines);
rewind(fdefines);
while((c=getc(fdefines)) != EOF)
putc(c,ftmp);
fclose(ftmp);
fclose(fdefines);
}
}
#ifdef VMS
if (faction)
delete(actfile);
if (fattrs)
delete(tmpattrsfile);
if (ftable)
delete(tmptabfile);
if (k==0) sys$exit(SS$_NORMAL);
sys$exit(SS$_ABORT);
#else
#ifdef MSDOS
if (actfile) unlink(actfile);
if (tmpattrsfile) unlink(tmpattrsfile);
if (tmptabfile) unlink(tmptabfile);
if (tmpdefsfile) unlink(tmpdefsfile);
#endif /* MSDOS */
exit(k);
#endif /* not VMS */
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.