Add helper program for testing opening zip files.
--HG--
branch : HEAD
diff --git a/regress/tryopen.c b/regress/tryopen.c
new file mode 100644
index 0000000..143a37f
--- /dev/null
+++ b/regress/tryopen.c
@@ -0,0 +1,96 @@
+/*
+ tryopen.c -- tool for tests that try opening zip archives
+ Copyright (C) 1999-2011 Dieter Baron and Thomas Klausner
+
+ This file is part of libzip, a library to manipulate ZIP archives.
+ The authors can be contacted at <libzip@nih.at>
+
+ 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. The names of the authors may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
+*/
+
+
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef HAVE_GETOPT
+#include "getopt.h"
+#endif
+
+#include "zip.h"
+
+const char *prg;
+
+const char *usage = "usage: %s [-cen] file\n";
+
+
+
+int
+main(int argc, char *argv[])
+{
+ const char *fname;
+ struct zip *z;
+ int c, count, flags, ze;
+
+ flags = 0;
+ prg = argv[0];
+
+ while ((c=getopt(argc, argv, "cen")) != -1) {
+ switch (c) {
+ case 'c':
+ flags |= ZIP_CHECKCONS;
+ break;
+ case 'e':
+ flags |= ZIP_EXCL;
+ break;
+ case 'n':
+ flags |= ZIP_CREATE;
+ break;
+
+ default:
+ fprintf(stderr, usage, prg);
+ return 1;
+ }
+ }
+ if (argc != optind+1) {
+ fprintf(stderr, usage, prg);
+ return 1;
+ }
+
+ fname = argv[optind];
+ errno = 0;
+
+ if ((z=zip_open(fname, flags, &ze)) != NULL) {
+ count = zip_get_num_files(z);
+ printf("%s: opening `%s' succeeded, %d entries\n", prg, fname, count);
+ zip_close(z);
+ return 0;
+ }
+
+ printf("%s: opening `%s' returned error %d/%d\n",
+ prg, fname, ze, errno);
+ return 1;
+}
