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-rw-r--r--src/Common/libzip/zip_file_set_comment.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/Common/libzip/zip_file_set_comment.c b/src/Common/libzip/zip_file_set_comment.c
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+++ b/src/Common/libzip/zip_file_set_comment.c
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+/*
+ zip_file_set_comment.c -- set comment for file in archive
+ Copyright (C) 2006-2014 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 <stdlib.h>
+
+#include "zipint.h"
+
+
+ZIP_EXTERN int
+zip_file_set_comment(zip_t *za, zip_uint64_t idx,
+ const char *comment, zip_uint16_t len, zip_flags_t flags)
+{
+ zip_entry_t *e;
+ zip_string_t *cstr;
+ int changed;
+
+ if (_zip_get_dirent(za, idx, 0, NULL) == NULL)
+ return -1;
+
+ if (ZIP_IS_RDONLY(za)) {
+ zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
+ return -1;
+ }
+
+ if (len > 0 && comment == NULL) {
+ zip_error_set(&za->error, ZIP_ER_INVAL, 0);
+ return -1;
+ }
+
+ if (len > 0) {
+ if ((cstr=_zip_string_new((const zip_uint8_t *)comment, len, flags, &za->error)) == NULL)
+ return -1;
+ if ((flags & ZIP_FL_ENCODING_ALL) == ZIP_FL_ENC_GUESS && _zip_guess_encoding(cstr, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_UTF8_GUESSED)
+ cstr->encoding = ZIP_ENCODING_UTF8_KNOWN;
+ }
+ else
+ cstr = NULL;
+
+ e = za->entry+idx;
+
+ if (e->changes) {
+ _zip_string_free(e->changes->comment);
+ e->changes->comment = NULL;
+ e->changes->changed &= ~ZIP_DIRENT_COMMENT;
+ }
+
+ if (e->orig && e->orig->comment)
+ changed = !_zip_string_equal(e->orig->comment, cstr);
+ else
+ changed = (cstr != NULL);
+
+ if (changed) {
+ if (e->changes == NULL) {
+ if ((e->changes=_zip_dirent_clone(e->orig)) == NULL) {
+ zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
+ _zip_string_free(cstr);
+ return -1;
+ }
+ }
+ e->changes->comment = cstr;
+ e->changes->changed |= ZIP_DIRENT_COMMENT;
+ }
+ else {
+ _zip_string_free(cstr);
+ if (e->changes && e->changes->changed == 0) {
+ _zip_dirent_free(e->changes);
+ e->changes = NULL;
+ }
+ }
+
+ return 0;
+}