mirror of https://github.com/PCSX2/pcsx2.git
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/*
|
|
zip_set_file_compression.c -- set compression for file in archive
|
|
Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
|
|
|
|
This file is part of libzip, a library to manipulate ZIP archives.
|
|
The authors can be contacted at <info@libzip.org>
|
|
|
|
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 "zipint.h"
|
|
|
|
|
|
ZIP_EXTERN int
|
|
zip_set_file_compression(zip_t *za, zip_uint64_t idx, zip_int32_t method, zip_uint32_t flags) {
|
|
zip_entry_t *e;
|
|
zip_int32_t old_method;
|
|
|
|
if (idx >= za->nentry) {
|
|
zip_error_set(&za->error, ZIP_ER_INVAL, 0);
|
|
return -1;
|
|
}
|
|
|
|
if (ZIP_IS_RDONLY(za)) {
|
|
zip_error_set(&za->error, ZIP_ER_RDONLY, 0);
|
|
return -1;
|
|
}
|
|
if (ZIP_WANT_TORRENTZIP(za)) {
|
|
zip_error_set(&za->error, ZIP_ER_NOT_ALLOWED, 0);
|
|
return -1;
|
|
}
|
|
|
|
if (!zip_compression_method_supported(method, true)) {
|
|
zip_error_set(&za->error, ZIP_ER_COMPNOTSUPP, 0);
|
|
return -1;
|
|
}
|
|
|
|
e = za->entry + idx;
|
|
|
|
old_method = (e->orig == NULL ? ZIP_CM_DEFAULT : e->orig->comp_method);
|
|
|
|
/* TODO: do we want to recompress if level is set? Only if it's
|
|
* different than what bit flags tell us, but those are not
|
|
* defined for all compression methods, or not directly mappable
|
|
* to levels */
|
|
|
|
if (method == old_method) {
|
|
if (e->changes) {
|
|
e->changes->changed &= ~ZIP_DIRENT_COMP_METHOD;
|
|
e->changes->compression_level = 0;
|
|
if (e->changes->changed == 0) {
|
|
_zip_dirent_free(e->changes);
|
|
e->changes = NULL;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (e->changes == NULL) {
|
|
if ((e->changes = _zip_dirent_clone(e->orig)) == NULL) {
|
|
zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
e->changes->comp_method = method;
|
|
e->changes->compression_level = (zip_uint16_t)flags;
|
|
e->changes->changed |= ZIP_DIRENT_COMP_METHOD;
|
|
}
|
|
|
|
return 0;
|
|
}
|