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f3e8eca87b
Shapes with live settings, shape editing, knife and hole tools, drawing shapes onto other objects, combining objects (add / subtract / overlap), copies, thickness, painting with stickers and layers, a Layout tab, a Print tab with checks, packed .fry files with autosave, export to GLB, glTF, FBX, OBJ, 3MF, STL and PLY, folders in Layers, its own crash screen, and a website for GitHub Pages in docs/. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NMSrd5oe1GpUD7E6d825KP
57 lines
2 KiB
C++
57 lines
2 KiB
C++
#pragma once
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// YMP ("Your Mom's Package") = a tar archive compressed with zstd's seekable
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// format. It is a normal .tar.zst (`tar --zstd -xf pak0.ymp` works), and the
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// engine can still read any file without decompressing the rest:
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// - frames end at file boundaries, so a small file decompresses on its own
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// - the first tar member, ".ymp-index", lists every file's offset and size
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// Plain .tar.zst files (no index, not seekable) also load: they are fully
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// decompressed into memory once.
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#include <cstdint>
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#include <map>
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#include <memory>
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#include <string>
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#include <string_view>
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#include <vector>
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struct ZSTD_seekable_s;
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namespace keel {
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struct PackInput {
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std::string archivePath; // path inside the pack, forward slashes
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std::string diskPath;
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};
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// Writes a pack. Level 19 is slow to build and fast to load; 3 is quick for iteration.
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bool writeYmp(const std::string& outPath, const std::vector<PackInput>& files, int level = 19);
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// Builds an uncompressed tar (with the YMP index as first member).
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std::vector<uint8_t> buildTar(const std::vector<std::pair<std::string, std::vector<uint8_t>>>& files);
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class YmpArchive {
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public:
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YmpArchive();
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~YmpArchive();
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YmpArchive(const YmpArchive&) = delete;
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YmpArchive& operator=(const YmpArchive&) = delete;
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bool open(const std::string& path);
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bool read(std::string_view path, std::vector<uint8_t>& out);
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bool contains(std::string_view path) const { return entries_.count(std::string(path)) != 0; }
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std::vector<std::string> files() const;
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private:
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struct Entry {
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uint64_t offset; // in the uncompressed tar
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uint64_t size;
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};
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bool readRange(uint64_t offset, size_t size, void* out);
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bool parseTar(uint64_t totalSize);
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std::string path_;
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FILE* file_ = nullptr;
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::ZSTD_seekable_s* seekable_ = nullptr;
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std::vector<uint8_t> memory_; // whole tar, when the archive isn't seekable
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std::map<std::string, Entry, std::less<>> entries_;
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};
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} // namespace keel
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