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Henrik RydgårdandClaude Opus 5.5
5cc5a2d802
- Fixes #18746 Packs are mostly made on Windows, where "portraits/x.png" in textures.ini finds Portraits/x.png. On a case sensitive file system (Steam Deck, Linux) it didn't, while zipped packs already ignored case. DirectoryReader gets an opt-in ignoreCase mode, used for texture packs. On the first miss it indexes the directory by lowercased path and retries there, so packs where every name matches never pay for it, and the walk happens on the IO thread that loads the texture. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
#pragma once
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#include <mutex>
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#include <string>
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#include <unordered_map>
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#include "Common/File/VFS/VFS.h"
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#include "Common/File/FileUtil.h"
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#include "Common/File/Path.h"
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class DirectoryReader : public VFSBackend {
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public:
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// With ignoreCase, GetFile and ReadFile also find files whose names only differ in case, like the
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// zip reader does. Meant for directories that people fill by hand on Windows, like texture packs,
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// which then break on case sensitive file systems.
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explicit DirectoryReader(const Path &path, bool ignoreCase = false);
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// use delete[] on the returned value.
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uint8_t *ReadFile(std::string_view path, size_t *size) override;
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VFSFileReference *GetFile(std::string_view path) override;
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bool GetFileInfo(VFSFileReference *vfsReference, File::FileInfo *fileInfo) override;
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void ReleaseFile(VFSFileReference *vfsReference) override;
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VFSOpenFile *OpenFileForRead(VFSFileReference *vfsReference, size_t *size) override;
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void Rewind(VFSOpenFile *vfsOpenFile) override;
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size_t Read(VFSOpenFile *vfsOpenFile, void *buffer, size_t length) override;
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void CloseFile(VFSOpenFile *vfsOpenFile) override;
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bool GetFileListing(std::string_view path, std::vector<File::FileInfo> *listing, const char *filter) override;
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bool GetFileInfo(std::string_view path, File::FileInfo *info) override;
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bool Exists(std::string_view path) override;
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std::string toString() const override {
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return path_.ToString();
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}
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private:
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// Returns the path (relative to path_) of a file whose name matches path except for case.
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bool FindIgnoringCase(std::string_view path, std::string *actualPath);
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void IndexDirectory(const Path &dir, const std::string &prefix);
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Path path_;
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bool ignoreCase_ = false;
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// Lowercase relative path -> actual relative path of every file, built on the first miss.
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std::mutex indexLock_;
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bool indexBuilt_ = false;
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std::unordered_map<std::string, std::string> lowerIndex_;
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int caseFixCount_ = 0;
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};
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