+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ken Arnold.
+ *
+ * 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) 1991 The Regents of the University of California.\n\
+ All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)unstr.c 5.8 (Berkeley) 4/8/91";
+#endif /* not lint */
+
+/*
+ * This program un-does what "strfile" makes, thereby obtaining the
+ * original file again. This can be invoked with the name of the output
+ * file, the input file, or both. If invoked with only a single argument
+ * ending in ".dat", it is pressumed to be the input file and the output
+ * file will be the same stripped of the ".dat". If the single argument
+ * doesn't end in ".dat", then it is presumed to be the output file, and
+ * the input file is that name prepended by a ".dat". If both are given
+ * they are treated literally as the input and output files.
+ *
+ * Ken Arnold Aug 13, 1978
+ */
+
+# include <machine/endian.h>
+# include <sys/param.h>
+# include "strfile.h"
+# include <stdio.h>
+# include <ctype.h>
+
+# ifndef MAXPATHLEN
+# define MAXPATHLEN 1024
+# endif /* MAXPATHLEN */
+
+char *Infile, /* name of input file */
+ Datafile[MAXPATHLEN], /* name of data file */
+ Delimch; /* delimiter character */
+
+FILE *Inf, *Dataf;
+
+char *strcat(), *strcpy();
+
+/* ARGSUSED */
+main(ac, av)
+int ac;
+char **av;
+{
+ static STRFILE tbl; /* description table */
+
+ getargs(av);
+ if ((Inf = fopen(Infile, "r")) == NULL) {
+ perror(Infile);
+ exit(1);
+ }
+ if ((Dataf = fopen(Datafile, "r")) == NULL) {
+ perror(Datafile);
+ exit(1);
+ }
+ (void) fread((char *) &tbl, sizeof tbl, 1, Dataf);
+ tbl.str_version = ntohl(tbl.str_version);
+ tbl.str_numstr = ntohl(tbl.str_numstr);
+ tbl.str_longlen = ntohl(tbl.str_longlen);
+ tbl.str_shortlen = ntohl(tbl.str_shortlen);
+ tbl.str_flags = ntohl(tbl.str_flags);
+ if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM))) {
+ fprintf(stderr, "nothing to do -- table in file order\n");
+ exit(1);
+ }
+ Delimch = tbl.str_delim;
+ order_unstr(&tbl);
+ (void) fclose(Inf);
+ (void) fclose(Dataf);
+ exit(0);
+}
+
+getargs(av)
+register char *av[];
+{
+ if (!*++av) {
+ (void) fprintf(stderr, "usage: unstr datafile\n");
+ exit(1);
+ }
+ Infile = *av;
+ (void) strcpy(Datafile, Infile);
+ (void) strcat(Datafile, ".dat");
+}
+
+order_unstr(tbl)
+register STRFILE *tbl;
+{
+ register int i;
+ register char *sp;
+ auto off_t pos;
+ char buf[BUFSIZ];
+
+ for (i = 0; i < tbl->str_numstr; i++) {
+ (void) fread((char *) &pos, 1, sizeof pos, Dataf);
+ (void) fseek(Inf, ntohl(pos), 0);
+ if (i != 0)
+ (void) printf("%c\n", Delimch);
+ for (;;) {
+ sp = fgets(buf, sizeof buf, Inf);
+ if (sp == NULL || STR_ENDSTRING(sp, *tbl))
+ break;
+ else
+ fputs(sp, stdout);
+ }
+ }
+}
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