/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Robert Paul Corbett.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)main.c 5.5 (Berkeley) 5/24/93";
#endif /* not lint */
#include <signal.h>
#include "defs.h"
char tflag;
char vflag;
int csharp = 0;
char *file_prefix = "y";
char *myname = "yacc";
char *temp_form = "yacc.XXXXXXX";
int lineno;
int outline;
char *action_file_name;
char *input_file_name = "";
char *prolog_file_name;
char *local_file_name;
char *verbose_file_name;
FILE *action_file; /* a temp file, used to save actions associated */
/* with rules until the parser is written */
FILE *input_file; /* the input file */
FILE *prolog_file; /* temp files, used to save text until all */
FILE *local_file; /* symbols have been defined */
FILE *verbose_file; /* y.output */
int nitems;
int nrules;
int nsyms;
int ntokens;
int nvars;
int nmethods;
int start_symbol;
char **symbol_name;
short *symbol_value;
short *symbol_prec;
char *symbol_assoc;
char **methods;
short *ritem;
short *rlhs;
short *rrhs;
short *rprec;
char *rassoc;
short **derives;
char *nullable;
#if defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
extern char* mktemp();
#define mkstemp mktemp
#endif
extern char *getenv();
done(k)
int k;
{
if (action_file) { fclose(action_file); unlink(action_file_name); }
if (prolog_file) { fclose(prolog_file); unlink(prolog_file_name); }
if (local_file) { fclose(local_file); unlink(local_file_name); }
exit(k);
}
void
onintr(signo)
int signo;
{
done(1);
}
set_signals()
{
#ifdef SIGINT
if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, onintr);
#endif
#ifdef SIGTERM
if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
signal(SIGTERM, onintr);
#endif
#ifdef SIGHUP
if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
signal(SIGHUP, onintr);
#endif
}
usage()
{
fprintf(stderr, "usage: %s [-tvcp] [-b file_prefix] filename\n", myname);
exit(1);
}
void
print_skel_dir(void)
{
printf ("%s\n", SKEL_DIRECTORY);
exit (0);
}
getargs(argc, argv)
int argc;
char *argv[];
{
register int i;
register char *s;
if (argc > 0) myname = argv[0];
for (i = 1; i < argc; ++i)
{
s = argv[i];
if (*s != '-') break;
switch (*++s)
{
case '\0':
input_file = stdin;
if (i + 1 < argc) usage();
return;
case '-':
++i;
goto no_more_options;
case 'b':
if (*++s)
file_prefix = s;
else if (++i < argc)
file_prefix = argv[i];
else
usage();
continue;
case 't':
tflag = 1;
break;
case 'p':
print_skel_dir ();
break;
case 'c':
csharp = 1;
line_format = "#line %d \"%s\"\n";
default_line_format = "#line default\n";
break;
case 'v':
vflag = 1;
break;
default:
usage();
}
for (;;)
{
switch (*++s)
{
case '\0':
goto end_of_option;
case 't':
tflag = 1;
break;
case 'v':
vflag = 1;
break;
case 'p':
print_skel_dir ();
break;
case 'c':
csharp = 1;
line_format = "#line %d \"%s\"\n";
default_line_format = "#line default\n";
break;
default:
usage();
}
}
end_of_option:;
}
no_more_options:;
if (i + 1 != argc) usage();
input_file_name = argv[i];
}
char *
allocate(n)
unsigned n;
{
register char *p;
p = NULL;
if (n)
{
p = CALLOC(1, n);
if (!p) no_space();
}
return (p);
}
#ifdef __GNUC__
#define GNUC_UNUSED __attribute__((__unused__))
#else
#define GNUC_UNUSED
#endif
create_file_names()
{
int i, len;
char *tmpdir;
int mkstemp_res GNUC_UNUSED;
#if defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
tmpdir = ".";
#else
tmpdir = getenv("TMPDIR");
if (tmpdir == 0) tmpdir = getenv ("TMP");
if (tmpdir == 0) tmpdir = getenv ("TEMP");
if (tmpdir == 0) tmpdir = "/tmp";
#endif
len = strlen(tmpdir);
i = len + 13;
if (len && tmpdir[len-1] != '/')
++i;
action_file_name = MALLOC(i);
if (action_file_name == 0) no_space();
prolog_file_name = MALLOC(i);
if (prolog_file_name == 0) no_space();
local_file_name = MALLOC(i);
if (local_file_name == 0) no_space();
strcpy(action_file_name, tmpdir);
strcpy(prolog_file_name, tmpdir);
strcpy(local_file_name, tmpdir);
if (len && tmpdir[len - 1] != '/')
{
action_file_name[len] = '/';
prolog_file_name[len] = '/';
local_file_name[len] = '/';
++len;
}
strcpy(action_file_name + len, temp_form);
strcpy(prolog_file_name + len, temp_form);
strcpy(local_file_name + len, temp_form);
action_file_name[len + 5] = 'a';
prolog_file_name[len + 5] = 'p';
local_file_name[len + 5] = 'l';
mkstemp_res = mkstemp(action_file_name);
mkstemp_res = mkstemp(prolog_file_name);
mkstemp_res = mkstemp(local_file_name);
len = strlen(file_prefix);
if (vflag)
{
verbose_file_name = MALLOC(len + 8);
if (verbose_file_name == 0)
no_space();
strcpy(verbose_file_name, file_prefix);
strcpy(verbose_file_name + len, VERBOSE_SUFFIX);
}
}
open_files()
{
create_file_names();
if (input_file == 0)
{
input_file = fopen(input_file_name, "r");
if (input_file == 0)
open_error(input_file_name);
}
action_file = fopen(action_file_name, "w");
if (action_file == 0)
open_error(action_file_name);
prolog_file = fopen(prolog_file_name, "w");
if (prolog_file == 0)
open_error(prolog_file_name);
local_file = fopen(local_file_name, "w");
if (local_file == 0)
open_error(local_file_name);
if (vflag)
{
verbose_file = fopen(verbose_file_name, "w");
if (verbose_file == 0)
open_error(verbose_file_name);
}
}
int
main(argc, argv)
int argc;
char *argv[];
{
set_signals();
getargs(argc, argv);
open_files();
reader();
lr0();
lalr();
make_parser();
verbose();
output();
done(0);
/*NOTREACHED*/
}