mirror of
https://github.com/fallout2-ce/fallout2-ce.git
synced 2026-07-27 16:47:11 -07:00
Mike Klaas
24199e916d
* Grow ability for `ce-dat-tool` to extract a list of files This is needed for Et Tu installation, which selectively extracts files from fo1's master.dat. (It doesn't work if everything is extracted) * cache entry list to avoid O(n) cost when extracting many files
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#ifndef FALLOUT_TOOLS_DAT_ARCHIVE_H_
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#define FALLOUT_TOOLS_DAT_ARCHIVE_H_
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#include <cstddef>
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#include <memory>
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#include <optional>
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#include <string>
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#include <unordered_map>
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#include <vector>
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namespace fallout {
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class DatArchiveStream {
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public:
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virtual ~DatArchiveStream() = default;
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virtual size_t read(void* buffer, size_t size) = 0;
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virtual bool seek(long offset, int origin) = 0;
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virtual long tell() const = 0;
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virtual long size() const = 0;
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};
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struct DatArchiveEntry {
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std::string path;
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int flags = 0;
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bool compressed = false;
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std::optional<long> storedSize;
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long uncompressedSize = 0;
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std::optional<long> dataOffset;
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};
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class DatArchive {
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public:
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virtual ~DatArchive() = default;
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virtual const char* formatName() const = 0;
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virtual const std::string& path() const = 0;
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virtual const std::vector<DatArchiveEntry>& entries() const = 0;
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virtual std::optional<long> dataOffset() const = 0;
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virtual std::unique_ptr<DatArchiveStream> openEntry(const std::string& path) const = 0;
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const DatArchiveEntry* findEntry(const std::string& path) const;
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std::vector<const DatArchiveEntry*> findEntries(const std::string& pattern) const;
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static std::unique_ptr<DatArchive> open(const std::string& path);
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private:
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void ensureEntryLookup() const;
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mutable bool entryLookupInitialized_ = false;
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mutable std::unordered_map<std::string, const DatArchiveEntry*> entryLookup_;
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};
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} // namespace fallout
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#endif /* FALLOUT_TOOLS_DAT_ARCHIVE_H_ */
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