First Commit

2025-11-18 14:18:26 -07:00
parent 33eb6e3707
commit 27277ec342
6106 changed files with 3571167 additions and 0 deletions
--- a/3rdparty/libzip/lib/zip_stat_index.c
+++ b/3rdparty/libzip/lib/zip_stat_index.c
@@ -0,0 +1,115 @@
+/*
+  zip_stat_index.c -- get information about file by index
+  Copyright (C) 1999-2024 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_stat_index(zip_t *za, zip_uint64_t index, zip_flags_t flags, zip_stat_t *st) {
+    const char *name;
+    zip_dirent_t *de;
+    zip_entry_t *entry;
+
+    if ((de = _zip_get_dirent(za, index, flags, NULL)) == NULL) {
+        return -1;
+    }
+
+    if ((name = zip_get_name(za, index, flags)) == NULL) {
+        return -1;
+    }
+
+    entry = za->entry + index;
+
+    if ((flags & ZIP_FL_UNCHANGED) == 0 && ZIP_ENTRY_DATA_CHANGED(za->entry + index)) {
+
+        if (zip_source_stat(entry->source, st) < 0) {
+            zip_error_set(&za->error, ZIP_ER_CHANGED, 0);
+            return -1;
+        }
+
+        if (ZIP_CM_IS_DEFAULT(de->comp_method)) {
+            if (!(st->valid & ZIP_STAT_COMP_METHOD) || st->comp_method == ZIP_CM_STORE) {
+                st->valid &= ~(ZIP_STAT_COMP_SIZE|ZIP_STAT_COMP_METHOD);
+            }
+        }
+        else {
+            if ((st->valid & ZIP_STAT_COMP_METHOD) && st->comp_method != de->comp_method) {
+                st->valid &= ~ZIP_STAT_COMP_SIZE;
+            }
+            st->valid |= ZIP_STAT_COMP_METHOD;
+            st->comp_method = de->comp_method;
+        }
+
+        if (((st->valid & (ZIP_STAT_COMP_METHOD|ZIP_STAT_SIZE)) == (ZIP_STAT_COMP_METHOD|ZIP_STAT_SIZE)) && st->comp_method == ZIP_CM_STORE) {
+            st->valid |= ZIP_STAT_COMP_SIZE;
+            st->comp_size = st->size;
+        }
+
+        if (entry->changes != NULL && entry->changes->changed & ZIP_DIRENT_LAST_MOD) {
+            st->mtime = zip_dirent_get_last_mod_mtime(de);
+            st->valid |= ZIP_STAT_MTIME;
+        }
+    }
+    else {
+        zip_stat_init(st);
+
+        st->crc = de->crc;
+        st->size = de->uncomp_size;
+        st->mtime = zip_dirent_get_last_mod_mtime(de);
+        st->comp_size = de->comp_size;
+        st->comp_method = (zip_uint16_t)de->comp_method;
+        st->encryption_method = de->encryption_method;
+        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;
+        if (entry->changes != NULL && entry->changes->changed & ZIP_DIRENT_COMP_METHOD) {
+            st->valid &= ~ZIP_STAT_COMP_SIZE;
+        }
+    }
+
+    if ((za->ch_flags & ZIP_AFL_WANT_TORRENTZIP) && (flags & ZIP_FL_UNCHANGED) == 0) {
+        if (za->torrent_mtime == 0) {
+            zip_dostime_t dostime = {0xbc00, 0x2198};
+            za->torrent_mtime = _zip_d2u_time(&dostime);
+        }
+        st->comp_method = ZIP_CM_DEFLATE;
+        st->mtime = za->torrent_mtime;
+        st->valid |= ZIP_STAT_MTIME | ZIP_STAT_COMP_METHOD;
+        st->valid &= ~ZIP_STAT_COMP_SIZE;
+    }
+
+    st->index = index;
+    st->name = name;
+    st->valid |= ZIP_STAT_INDEX | ZIP_STAT_NAME;
+
+    return 0;
+}