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ZipFileReader: Look up the exact name before the case insensitive one

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The case insensitive lookup compares against every name in the zip, while an exact one uses libzip's
hash table. Texture packs can have tens of thousands of files.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Henrik RydgårdandClaude Opus 5.5 committed 2026-10-20 11:22:31 +02:00
1 parent f74111835f
commit 7b9e1a1c93
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Common/File/VFS/ZipFileReader.cpp
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@@ -351,7 +351,11 @@ public:
VFSFileReference *ZipFileReader::GetFile(std::string_view path) {
std::string p(path);
int zi = zip_name_locate(zip_file_, p.c_str(), ZIP_FL_NOCASE); // this is EXPENSIVE
// An exact match uses libzip's hash table, the case insensitive one compares every name in the zip.
int zi = zip_name_locate(zip_file_, p.c_str(), 0);
if (zi < 0) {
zi = zip_name_locate(zip_file_, p.c_str(), ZIP_FL_NOCASE);
}
if (zi < 0) {
// Not found.
return nullptr;