Mercurial > code
diff modules/zip/libzip/lib/zip_set_archive_comment.c @ 527:8f8c32f102f1
Zip: resurrection
author | David Demelier <markand@malikania.fr> |
---|---|
date | Wed, 01 Jun 2016 17:36:52 +0200 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/modules/zip/libzip/lib/zip_set_archive_comment.c Wed Jun 01 17:36:52 2016 +0200 @@ -0,0 +1,82 @@ +/* + zip_set_archive_comment.c -- set archive comment + 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_set_archive_comment(zip_t *za, const char *comment, zip_uint16_t len) +{ + zip_string_t *cstr; + + 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, ZIP_FL_ENC_GUESS, &za->error)) == NULL) + return -1; + + if (_zip_guess_encoding(cstr, ZIP_ENCODING_UNKNOWN) == ZIP_ENCODING_CP437) { + _zip_string_free(cstr); + zip_error_set(&za->error, ZIP_ER_INVAL, 0); + return -1; + } + } + else + cstr = NULL; + + _zip_string_free(za->comment_changes); + za->comment_changes = NULL; + + if (((za->comment_orig && _zip_string_equal(za->comment_orig, cstr)) + || (za->comment_orig == NULL && cstr == NULL))) { + _zip_string_free(cstr); + za->comment_changed = 0; + } + else { + za->comment_changes = cstr; + za->comment_changed = 1; + } + + return 0; +}