Update ZipUtils.cpp (#20192)

Author: halx99

cocos/base/ZipUtils.cpp

@@ -31,6 +31,8 @@
 #else // from our embedded sources
 #include "unzip.h"
 #endif
+#include "ioapi_mem.h"
+#include <memory>
 
 #include <zlib.h>
 #include <assert.h>
@@ -509,6 +511,7 @@ class ZipFilePrivate
 {
 public:
     unzFile zipFile;
+    std::unique_ptr<ourmemory_s> memfs;
 
     // std::unordered_map is faster if available on the platform
     typedef std::unordered_map<std::string, struct ZipEntryInfo> FileListContainer;
@@ -739,10 +742,17 @@ int ZipFile::getCurrentFileInfo(std::string *filename, unz_file_info *info)
 bool ZipFile::initWithBuffer(const void *buffer, uLong size)
 {
     if (!buffer || size == 0) return false;
+
+    zlib_filefunc_def memory_file = { 0 };
 
-    _data->zipFile = unzOpenBuffer(buffer, size);
-    if (!_data->zipFile) return false;
+    std::unique_ptr<ourmemory_t> memfs(new(std::nothrow) ourmemory_t{ (char*)const_cast<void*>(buffer), static_cast<uint32_t>(size), 0, 0, 0 });
+    if (!memfs) return false;
+    fill_memory_filefunc(&memory_file, memfs.get());
 
+    _data->zipFile = unzOpen2(nullptr, &memory_file);
+    if (!_data->zipFile) return false;
+    _data->memfs = std::move(memfs);
+
     setFilter(emptyFilename);
     return true;
 }