485 lines
11 KiB
C
485 lines
11 KiB
C
/* $NetBSD: main.c,v 1.21 2009/04/14 09:41:30 lukem Exp $ */
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/*
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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. 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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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if defined(__COPYRIGHT) && !defined(lint)
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__COPYRIGHT("@(#) Copyright (c) 1989\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#if defined(__RCSID) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)main.c 5.5 (Berkeley) 5/24/93";
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#else
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__RCSID("$NetBSD: main.c,v 1.21 2009/04/14 09:41:30 lukem Exp $");
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#endif
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#endif /* not lint */
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "defs.h"
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char dflag;
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char lflag;
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char rflag;
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char tflag;
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char vflag;
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const char *symbol_prefix;
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const char *myname = "yacc";
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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 *code_file_name;
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char *defines_file_name;
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const char *input_file_name = "";
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char *output_file_name;
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char *text_file_name;
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char *union_file_name;
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char *verbose_file_name;
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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 *code_file; /* y.code.c (used when the -r option is specified) */
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FILE *defines_file; /* y.tab.h */
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FILE *input_file; /* the input file */
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FILE *output_file; /* y.tab.c */
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FILE *text_file; /* a temp file, used to save text until all */
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/* symbols have been defined */
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FILE *union_file; /* a temp file, used to save the union */
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/* definition until all symbol have been */
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/* defined */
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FILE *verbose_file; /* y.output */
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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 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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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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static const char *file_prefix = "y";
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static const char *temp_form = "yacc.XXXXXXX";
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static int explicit_file_name;
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static __dead void onintr(int);
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static void set_signals(void);
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static __dead void usage(void);
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static void getargs(int, char *[]);
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static void create_file_names(void);
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static void open_files(void);
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/* coverity[+kill] */
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__dead 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 (text_file) { fclose(text_file); unlink(text_file_name); }
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if (union_file) { fclose(union_file); unlink(union_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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done(1);
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}
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static void
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set_signals()
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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 [-dlrtv] [-b file_prefix] [-o outputfile] "
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"[-p symbol_prefix] filename\n", myname);
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exit(1);
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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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int i;
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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 'd':
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dflag = 1;
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break;
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case 'l':
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lflag = 1;
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break;
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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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explicit_file_name = 1;
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continue;
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case 'p':
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if (*++s)
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symbol_prefix = s;
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else if (++i < argc)
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symbol_prefix = argv[i];
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else
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usage();
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continue;
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case 'r':
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rflag = 1;
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break;
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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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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 'd':
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dflag = 1;
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break;
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case 'l':
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lflag = 1;
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break;
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case 'r':
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rflag = 1;
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break;
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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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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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char *p;
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p = NULL;
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if (n)
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{
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p = 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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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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tmpdir = getenv("TMPDIR");
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if (tmpdir == 0) tmpdir = "/tmp";
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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 = MALLOC(i);
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if (action_file_name == 0) no_space();
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text_file_name = MALLOC(i);
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if (text_file_name == 0) no_space();
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union_file_name = MALLOC(i);
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if (union_file_name == 0) no_space();
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strlcpy(action_file_name, tmpdir, i);
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strlcpy(text_file_name, tmpdir, i);
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strlcpy(union_file_name, tmpdir, i);
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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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text_file_name[len] = '/';
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union_file_name[len] = '/';
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++len;
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}
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strlcpy(action_file_name + len, temp_form, i - len);
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strlcpy(text_file_name + len, temp_form, i - len);
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strlcpy(union_file_name + len, temp_form, i - len);
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action_file_name[len + 5] = 'a';
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text_file_name[len + 5] = 't';
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union_file_name[len + 5] = 'u';
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len = strlen(file_prefix);
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if (!output_file_name)
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{
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output_file_name = MALLOC(strlen(file_prefix) + strlen(OUTPUT_SUFFIX)
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+ 1);
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if (output_file_name == 0)
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no_space();
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sprintf(output_file_name, "%s%s", file_prefix, OUTPUT_SUFFIX);
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}
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if (rflag)
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{
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code_file_name = MALLOC(strlen(file_prefix) + strlen(CODE_SUFFIX)
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+ 1);
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if (code_file_name == 0)
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no_space();
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sprintf(code_file_name, "%s%s", file_prefix, CODE_SUFFIX);
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}
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else
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code_file_name = output_file_name;
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if (dflag)
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{
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if (explicit_file_name)
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{
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char *suffix;
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defines_file_name = strdup(output_file_name);
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if (defines_file_name == 0)
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no_space();
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/* does the output_file_name have a known suffix */
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suffix = strrchr(output_file_name, '.');
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if (suffix != 0 &&
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(!strcmp(suffix, ".c") || /* good, old-fashioned C */
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!strcmp(suffix, ".C") || /* C++, or C on Windows */
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!strcmp(suffix, ".cc") || /* C++ */
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!strcmp(suffix, ".cxx") || /* C++ */
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!strcmp(suffix, ".cpp"))) /* C++ (Windows) */
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{
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strncpy(defines_file_name, output_file_name,
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suffix - output_file_name + 1);
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defines_file_name[suffix - output_file_name + 1] = 'h';
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defines_file_name[suffix - output_file_name + 2] = 0;
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} else {
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fprintf(stderr,"%s: suffix of output file name %s"
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" not recognized, no -d file generated.\n",
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myname, output_file_name);
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dflag = 0;
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free(defines_file_name);
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defines_file_name = 0;
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}
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}
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else
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{
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defines_file_name = MALLOC(strlen(file_prefix) + strlen(DEFINES_SUFFIX)
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+ 1);
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if (defines_file_name == 0)
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no_space();
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sprintf(defines_file_name, "%s%s", file_prefix, DEFINES_SUFFIX);
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}
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}
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if (vflag)
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{
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verbose_file_name = MALLOC(strlen(file_prefix) + strlen(VERBOSE_SUFFIX)
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+ 1);
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if (verbose_file_name == 0)
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no_space();
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sprintf(verbose_file_name, "%s%s", file_prefix, 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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int fd;
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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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if (((fd = mkstemp(action_file_name)) == -1) ||
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(action_file = fdopen(fd, "w")) == NULL)
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open_error(action_file_name);
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if (((fd = mkstemp(text_file_name)) == -1) ||
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(text_file = fdopen(fd, "w")) == NULL)
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open_error(text_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 (dflag)
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{
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defines_file = fopen(defines_file_name, "w");
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if (defines_file == 0)
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open_error(defines_file_name);
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if (((fd = mkstemp(union_file_name)) == -1) ||
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(union_file = fdopen(fd, "w")) == NULL)
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open_error(union_file_name);
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}
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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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if (rflag)
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{
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code_file = fopen(code_file_name, "w");
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if (code_file == 0)
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open_error(code_file_name);
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}
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else
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code_file = output_file;
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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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return 0;
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}
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