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