112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
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/*
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zip_file_replace.c -- replace file via callback function
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Copyright (C) 1999-2012 Dieter Baron and Thomas Klausner
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This file is part of libzip, a library to manipulate ZIP archives.
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The authors can be contacted at <libzip@nih.at>
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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
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the documentation and/or other materials provided with the
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distribution.
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3. The names of the authors may not be used to endorse or promote
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products derived from this software without specific prior
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written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "zipint.h"
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ZIP_EXTERN int
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zip_file_replace(struct zip *za, zip_uint64_t idx, struct zip_source *source, zip_flags_t flags)
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{
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if (idx >= za->nentry || source == NULL) {
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_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
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return -1;
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}
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if (_zip_file_replace(za, idx, NULL, source, flags) == -1)
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return -1;
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return 0;
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}
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/* NOTE: Signed due to -1 on error. See zip_add.c for more details. */
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zip_int64_t
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_zip_file_replace(struct zip *za, zip_uint64_t idx, const char *name, struct zip_source *source, zip_flags_t flags)
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{
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zip_uint64_t za_nentry_prev;
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if (ZIP_IS_RDONLY(za)) {
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_zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
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return -1;
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}
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za_nentry_prev = za->nentry;
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if (idx == ZIP_UINT64_MAX) {
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zip_int64_t i = -1;
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if (flags & ZIP_FL_OVERWRITE)
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i = _zip_name_locate(za, name, flags, NULL);
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if (i == -1) {
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/* create and use new entry, used by zip_add */
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if ((i=_zip_add_entry(za)) < 0)
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return -1;
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}
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idx = (zip_uint64_t)i;
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}
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if (name && _zip_set_name(za, idx, name, flags) != 0) {
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if (za->nentry != za_nentry_prev) {
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_zip_entry_finalize(za->entry+idx);
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za->nentry = za_nentry_prev;
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}
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return -1;
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}
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/* does not change any name related data, so we can do it here;
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* needed for a double add of the same file name */
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_zip_unchange_data(za->entry+idx);
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if (za->entry[idx].orig != NULL && (za->entry[idx].changes == NULL || (za->entry[idx].changes->changed & ZIP_DIRENT_COMP_METHOD) == 0)) {
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if (za->entry[idx].changes == NULL) {
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if ((za->entry[idx].changes=_zip_dirent_clone(za->entry[idx].orig)) == NULL) {
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_zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
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return -1;
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}
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}
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za->entry[idx].changes->comp_method = ZIP_CM_REPLACED_DEFAULT;
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za->entry[idx].changes->changed |= ZIP_DIRENT_COMP_METHOD;
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}
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za->entry[idx].source = source;
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return (zip_int64_t)idx;
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}
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