mirror of https://github.com/PCSX2/pcsx2.git
112 lines
4.1 KiB
C
112 lines
4.1 KiB
C
/*
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zip_stat_index.c -- get information about file by index
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Copyright (C) 1999-2020 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 <info@libzip.org>
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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_stat_index(zip_t *za, zip_uint64_t index, zip_flags_t flags, zip_stat_t *st) {
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const char *name;
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zip_dirent_t *de;
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zip_entry_t *entry;
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if ((de = _zip_get_dirent(za, index, flags, NULL)) == NULL) {
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return -1;
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}
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if ((name = zip_get_name(za, index, flags)) == NULL) {
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return -1;
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}
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entry = za->entry + index;
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if ((flags & ZIP_FL_UNCHANGED) == 0 && ZIP_ENTRY_DATA_CHANGED(za->entry + index)) {
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if (zip_source_stat(entry->source, st) < 0) {
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zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
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return -1;
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}
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if (ZIP_CM_IS_DEFAULT(de->comp_method)) {
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if (!(st->valid & ZIP_STAT_COMP_METHOD) || st->comp_method == ZIP_CM_STORE) {
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st->valid &= ~(ZIP_STAT_COMP_SIZE|ZIP_STAT_COMP_METHOD);
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}
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}
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else {
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if ((st->valid & ZIP_STAT_COMP_METHOD) && st->comp_method != de->comp_method) {
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st->valid &= ~ZIP_STAT_COMP_SIZE;
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}
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st->valid |= ZIP_STAT_COMP_METHOD;
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st->comp_method = de->comp_method;
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}
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if (((st->valid & (ZIP_STAT_COMP_METHOD|ZIP_STAT_SIZE)) == (ZIP_STAT_COMP_METHOD|ZIP_STAT_SIZE)) && st->comp_method == ZIP_CM_STORE) {
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st->valid |= ZIP_STAT_COMP_SIZE;
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st->comp_size = st->size;
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}
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if (entry->changes != NULL && entry->changes->changed & ZIP_DIRENT_LAST_MOD) {
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st->mtime = de->last_mod;
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st->valid |= ZIP_STAT_MTIME;
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}
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}
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else {
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zip_stat_init(st);
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st->crc = de->crc;
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st->size = de->uncomp_size;
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st->mtime = de->last_mod;
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st->comp_size = de->comp_size;
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st->comp_method = (zip_uint16_t)de->comp_method;
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st->encryption_method = de->encryption_method;
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st->valid = (de->crc_valid ? ZIP_STAT_CRC : 0) | ZIP_STAT_SIZE | ZIP_STAT_MTIME | ZIP_STAT_COMP_SIZE | ZIP_STAT_COMP_METHOD | ZIP_STAT_ENCRYPTION_METHOD;
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if (entry->changes != NULL && entry->changes->changed & ZIP_DIRENT_COMP_METHOD) {
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st->valid &= ~ZIP_STAT_COMP_SIZE;
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}
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}
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if ((za->ch_flags & ZIP_AFL_WANT_TORRENTZIP) && (flags & ZIP_FL_UNCHANGED) == 0) {
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st->comp_method = ZIP_CM_DEFLATE;
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st->mtime = _zip_d2u_time(0xbc00, 0x2198);
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st->valid |= ZIP_STAT_MTIME | ZIP_STAT_COMP_METHOD;
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st->valid &= ~ZIP_STAT_COMP_SIZE;
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}
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st->index = index;
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st->name = name;
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st->valid |= ZIP_STAT_INDEX | ZIP_STAT_NAME;
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return 0;
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}
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