mirror of
https://git.savannah.gnu.org/git/bison.git
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Initial revision
This commit is contained in:
Richard M. Stallman
394
src/files.c
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394
src/files.c
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/* Open and close files for bison,
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Copyright (C) 1984, 1986, 1989 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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Bison is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bison is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bison; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifdef VMS
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#include <ssdef.h>
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#define unlink delete
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#ifndef XPFILE
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#define XPFILE "GNU_BISON:[000000]BISON.SIMPLE"
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#endif
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#ifndef XPFILE1
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#define XPFILE1 "GNU_BISON:[000000]BISON.HAIRY"
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#endif
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#endif
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#include <stdio.h>
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#include "system.h"
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#include "files.h"
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#include "new.h"
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#include "gram.h"
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FILE *finput = NULL;
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FILE *foutput = NULL;
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FILE *fdefines = NULL;
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FILE *ftable = NULL;
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FILE *fattrs = NULL;
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FILE *fguard = NULL;
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FILE *faction = NULL;
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FILE *fparser = NULL;
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/* File name specified with -o for the output file, or 0 if no -o. */
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char *spec_outfile;
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char *infile;
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char *outfile;
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char *defsfile;
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char *tabfile;
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char *attrsfile;
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char *guardfile;
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char *actfile;
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char *tmpattrsfile;
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char *tmptabfile;
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char *tmpdefsfile;
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extern char *mktemp(); /* So the compiler won't complain */
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extern char *getenv();
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extern void perror();
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FILE *tryopen(); /* This might be a good idea */
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void done();
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extern char *program_name;
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extern int verboseflag;
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extern int definesflag;
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int fixed_outfiles = 0;
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char*
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stringappend(string1, end1, string2)
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char *string1;
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int end1;
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char *string2;
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{
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register char *ostring;
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register char *cp, *cp1;
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register int i;
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cp = string2; i = 0;
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while (*cp++) i++;
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ostring = NEW2(i+end1+1, char);
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cp = ostring;
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cp1 = string1;
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for (i = 0; i < end1; i++)
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*cp++ = *cp1++;
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cp1 = string2;
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while (*cp++ = *cp1++) ;
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return ostring;
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}
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/* JF this has been hacked to death. Nowaday it sets up the file names for
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the output files, and opens the tmp files and the parser */
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void
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openfiles()
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{
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char *name_base;
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register char *cp;
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char *filename;
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int base_length;
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int short_base_length;
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#ifdef VMS
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char *tmp_base = "sys$scratch:b_";
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#else
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char *tmp_base = "/tmp/b.";
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#endif
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int tmp_len;
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#ifdef MSDOS
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tmp_base = getenv ("TMP");
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if (tmp_base == 0)
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tmp_base = "";
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strlwr (infile);
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#endif /* MSDOS */
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tmp_len = strlen (tmp_base);
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if (spec_outfile)
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{
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/* -o was specified. The precise -o name will be used for ftable.
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For other output files, remove the ".c" or ".tab.c" suffix. */
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name_base = spec_outfile;
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#ifdef MSDOS
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strlwr (name_base);
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#endif /* MSDOS */
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/* BASE_LENGTH includes ".tab" but not ".c". */
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base_length = strlen (name_base);
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if (!strcmp (name_base + base_length - 2, ".c"))
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base_length -= 2;
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/* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */
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short_base_length = base_length;
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if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
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short_base_length -= 4;
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else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
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short_base_length -= 4;
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}
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else if (spec_file_prefix)
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{
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/* -b was specified. Construct names from it. */
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/* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */
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short_base_length = strlen (spec_file_prefix);
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/* Count room for `.tab'. */
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base_length = short_base_length + 4;
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name_base = (char *) mallocate (base_length + 1);
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/* Append `.tab'. */
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strcpy (name_base, spec_file_prefix);
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#ifdef VMS
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strcat (name_base, "_tab");
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#else
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strcat (name_base, ".tab");
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#endif
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#ifdef MSDOS
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strlwr (name_base);
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#endif /* MSDOS */
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}
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else
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{
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/* -o was not specified; compute output file name from input
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or use y.tab.c, etc., if -y was specified. */
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name_base = fixed_outfiles ? "y.y" : infile;
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/* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any. */
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base_length = strlen (name_base);
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if (!strcmp (name_base + base_length - 2, ".y"))
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base_length -= 2;
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short_base_length = base_length;
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#ifdef VMS
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name_base = stringappend(name_base, short_base_length, "_tab");
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#else
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#ifdef MSDOS
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name_base = stringappend(name_base, short_base_length, "_tab");
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#else
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name_base = stringappend(name_base, short_base_length, ".tab");
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#endif /* not MSDOS */
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#endif
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base_length = short_base_length + 4;
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}
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finput = tryopen(infile, "r");
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filename = getenv("BISON_SIMPLE");
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#ifdef MSDOS
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/* File doesn't exist in current directory; try in INIT directory. */
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cp = getenv("INIT");
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if (filename == 0 && cp != 0)
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{
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filename = malloc(strlen(cp) + strlen(PFILE) + 2);
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strcpy(filename, cp);
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cp = filename + strlen(filename);
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*cp++ = '/';
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strcpy(cp, PFILE);
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}
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#endif /* MSDOS */
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fparser = tryopen(filename ? filename : PFILE, "r");
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if (verboseflag)
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{
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#ifdef MSDOS
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outfile = stringappend(name_base, short_base_length, ".out");
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#else
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/* We used to use just .out if spec_name_prefix (-p) was used,
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but that conflicts with Posix. */
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outfile = stringappend(name_base, short_base_length, ".output");
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#endif
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foutput = tryopen(outfile, "w");
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}
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#ifdef MSDOS
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actfile = mktemp(stringappend(tmp_base, tmp_len, "acXXXXXX"));
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tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "atXXXXXX"));
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tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "taXXXXXX"));
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tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "deXXXXXX"));
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#else
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actfile = mktemp(stringappend(tmp_base, tmp_len, "act.XXXXXX"));
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tmpattrsfile = mktemp(stringappend(tmp_base, tmp_len, "attrs.XXXXXX"));
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tmptabfile = mktemp(stringappend(tmp_base, tmp_len, "tab.XXXXXX"));
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tmpdefsfile = mktemp(stringappend(tmp_base, tmp_len, "defs.XXXXXX"));
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#endif /* not MSDOS */
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faction = tryopen(actfile, "w+");
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fattrs = tryopen(tmpattrsfile,"w+");
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ftable = tryopen(tmptabfile, "w+");
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if (definesflag)
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{
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defsfile = stringappend(name_base, base_length, ".h");
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fdefines = tryopen(tmpdefsfile, "w+");
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}
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#ifndef MSDOS
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unlink(actfile);
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unlink(tmpattrsfile);
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unlink(tmptabfile);
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unlink(tmpdefsfile);
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#endif
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/* These are opened by `done' or `open_extra_files', if at all */
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if (spec_outfile)
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tabfile = spec_outfile;
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else
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tabfile = stringappend(name_base, base_length, ".c");
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#ifdef VMS
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attrsfile = stringappend(name_base, short_base_length, "_stype.h");
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guardfile = stringappend(name_base, short_base_length, "_guard.c");
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#else
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#ifdef MSDOS
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attrsfile = stringappend(name_base, short_base_length, ".sth");
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guardfile = stringappend(name_base, short_base_length, ".guc");
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#else
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attrsfile = stringappend(name_base, short_base_length, ".stype.h");
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guardfile = stringappend(name_base, short_base_length, ".guard.c");
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#endif /* not MSDOS */
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#endif /* not VMS */
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}
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/* open the output files needed only for the semantic parser.
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This is done when %semantic_parser is seen in the declarations section. */
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void
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open_extra_files()
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{
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FILE *ftmp;
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int c;
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char *filename, *cp;
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fclose(fparser);
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filename = (char *) getenv ("BISON_HAIRY");
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#ifdef MSDOS
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/* File doesn't exist in current directory; try in INIT directory. */
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cp = getenv("INIT");
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if (filename == 0 && cp != 0)
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{
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filename = malloc(strlen(cp) + strlen(PFILE1) + 2);
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strcpy(filename, cp);
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cp = filename + strlen(filename);
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*cp++ = '/';
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strcpy(cp, PFILE1);
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}
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#endif
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fparser= tryopen(filename ? filename : PFILE1, "r");
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/* JF change from inline attrs file to separate one */
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ftmp = tryopen(attrsfile, "w");
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rewind(fattrs);
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while((c=getc(fattrs))!=EOF) /* Thank god for buffering */
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putc(c,ftmp);
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fclose(fattrs);
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fattrs=ftmp;
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fguard = tryopen(guardfile, "w");
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}
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/* JF to make file opening easier. This func tries to open file
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NAME with mode MODE, and prints an error message if it fails. */
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FILE *
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tryopen(name, mode)
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char *name;
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char *mode;
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{
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FILE *ptr;
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ptr = fopen(name, mode);
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if (ptr == NULL)
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{
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fprintf(stderr, "%s: ", program_name);
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perror(name);
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done(2);
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}
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return ptr;
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}
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void
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done(k)
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int k;
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{
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if (faction)
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fclose(faction);
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if (fattrs)
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fclose(fattrs);
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if (fguard)
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fclose(fguard);
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if (finput)
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fclose(finput);
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if (fparser)
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fclose(fparser);
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if (foutput)
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fclose(foutput);
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/* JF write out the output file */
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if (k == 0 && ftable)
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{
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FILE *ftmp;
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register int c;
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ftmp=tryopen(tabfile, "w");
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rewind(ftable);
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while((c=getc(ftable)) != EOF)
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putc(c,ftmp);
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fclose(ftmp);
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fclose(ftable);
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if (definesflag)
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{
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ftmp = tryopen(defsfile, "w");
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fflush(fdefines);
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rewind(fdefines);
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while((c=getc(fdefines)) != EOF)
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putc(c,ftmp);
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fclose(ftmp);
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fclose(fdefines);
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}
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}
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#ifdef VMS
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if (faction)
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delete(actfile);
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if (fattrs)
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delete(tmpattrsfile);
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if (ftable)
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delete(tmptabfile);
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if (k==0) sys$exit(SS$_NORMAL);
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sys$exit(SS$_ABORT);
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#else
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#ifdef MSDOS
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if (actfile) unlink(actfile);
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if (tmpattrsfile) unlink(tmpattrsfile);
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if (tmptabfile) unlink(tmptabfile);
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if (tmpdefsfile) unlink(tmpdefsfile);
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#endif /* MSDOS */
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exit(k);
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#endif /* not VMS */
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}
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Block a user