155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/* $NetBSD: unstr.c,v 1.7 1999/09/18 19:38:50 jsm Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. 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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* Ken Arnold.
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)unstr.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: unstr.c,v 1.7 1999/09/18 19:38:50 jsm Exp $");
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#endif
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#endif /* not lint */
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/*
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* This program un-does what "strfile" makes, thereby obtaining the
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* original file again. This can be invoked with the name of the output
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* file, the input file, or both. If invoked with only a single argument
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* ending in ".dat", it is pressumed to be the input file and the output
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* file will be the same stripped of the ".dat". If the single argument
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* doesn't end in ".dat", then it is presumed to be the output file, and
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* the input file is that name prepended by a ".dat". If both are given
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* they are treated literally as the input and output files.
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*
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* Ken Arnold Aug 13, 1978
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*/
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# include <sys/types.h>
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# include <sys/param.h>
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# include <machine/endian.h>
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# include <ctype.h>
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# include <err.h>
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# include <stdio.h>
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# include <string.h>
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# include "strfile.h"
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# ifndef MAXPATHLEN
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# define MAXPATHLEN 1024
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# endif /* MAXPATHLEN */
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char *Infile, /* name of input file */
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Datafile[MAXPATHLEN], /* name of data file */
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Delimch; /* delimiter character */
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FILE *Inf, *Dataf;
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void getargs __P((char *[]));
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int main __P((int, char *[]));
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void order_unstr __P((STRFILE *));
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/* ARGSUSED */
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int
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main(ac, av)
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int ac;
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char **av;
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{
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static STRFILE tbl; /* description table */
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getargs(av);
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if ((Inf = fopen(Infile, "r")) == NULL)
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err(1, "fopen %s", Infile);
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if ((Dataf = fopen(Datafile, "r")) == NULL)
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err(1, "fopen %s", Datafile);
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(void) fread((char *) &tbl, sizeof tbl, 1, Dataf);
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BE32TOH(tbl.str_version);
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BE32TOH(tbl.str_numstr);
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BE32TOH(tbl.str_longlen);
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BE32TOH(tbl.str_shortlen);
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BE32TOH(tbl.str_flags);
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if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM))) {
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fprintf(stderr, "nothing to do -- table in file order\n");
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exit(1);
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}
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Delimch = tbl.str_delim;
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order_unstr(&tbl);
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(void) fclose(Inf);
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(void) fclose(Dataf);
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exit(0);
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}
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void
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getargs(av)
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char *av[];
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{
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if (!*++av) {
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(void) fprintf(stderr, "usage: unstr datafile\n");
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exit(1);
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}
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Infile = *av;
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(void) strcpy(Datafile, Infile);
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(void) strcat(Datafile, ".dat");
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}
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void
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order_unstr(tbl)
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STRFILE *tbl;
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{
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unsigned int i;
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char *sp;
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off_t pos;
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char buf[BUFSIZ];
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for (i = 0; i < tbl->str_numstr; i++) {
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(void) fread((char *) &pos, 1, sizeof pos, Dataf);
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(void) fseek(Inf, be64toh(pos), SEEK_SET);
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if (i != 0)
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(void) printf("%c\n", Delimch);
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for (;;) {
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sp = fgets(buf, sizeof buf, Inf);
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if (sp == NULL || STR_ENDSTRING(sp, *tbl))
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break;
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else
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fputs(sp, stdout);
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}
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}
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}
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