add ZipFileDevice (WIP)

2025-02-22 05:48:48 +03:00
parent decb820cf9
commit 7f4b074d70
2 changed files with 223 additions and 0 deletions
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <unordered_map>
+
+#include "Device.hpp"
+
+namespace io {
+    class ZipFileDevice : public Device {
+        struct Entry {
+            uint16_t versionMadeBy;
+            uint16_t versionNeeded;
+            uint16_t flags;
+            uint16_t compressionMethod;
+            uint16_t modTime;
+            uint16_t modDate;
+            uint32_t crc32;
+            uint32_t compressedSize;
+            uint32_t uncompressedSize;
+            uint16_t diskNumberStart;
+            uint16_t internalAttributes;
+            uint32_t externalAttributes;
+            uint32_t localHeaderOffset;
+            std::string fileName;
+            size_t blobOffset = 0;
+        };
+    public:
+        ZipFileDevice(std::unique_ptr<std::istream> file);
+
+        std::filesystem::path resolve(std::string_view path) override;
+        std::unique_ptr<std::ostream> write(std::string_view path) override;
+        std::unique_ptr<std::istream> read(std::string_view path) override;
+        size_t size(std::string_view path) override;
+        bool exists(std::string_view path) override;
+        bool isdir(std::string_view path) override;
+        bool isfile(std::string_view path) override;
+        bool mkdir(std::string_view path) override;
+        bool mkdirs(std::string_view path) override;
+        bool remove(std::string_view path) override;
+        uint64_t removeAll(std::string_view path) override;
+        std::unique_ptr<PathsGenerator> list(std::string_view path) override;
+    private:
+        std::unique_ptr<std::istream> file;
+        std::unordered_map<std::string, Entry> entries;
+
+        Entry readEntry();
+        void findBlob(Entry& entry);
+    };
+}