Reimplemented part of archive format

This is getting reimplemented rather than refactor mostly in order to make
clear which parts are needed for backwards compatiblity (reading-wise) and
which are not. The current implementation has quite a number of quirks and
potential failure points despite not being large. Understanding them is not
worth it.

1 files changed, 51 insertions, 0 deletions

diff --git a/ArchiveEx/Archive.h b/ArchiveEx/Archive.h
new file mode 100644
index 0000000..cc06dc4
--- /dev/null
+++ b/ArchiveEx/Archive.h
@@ -0,0 +1,51 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+
+namespace Archive
+{
+
+
+static constexpr std::uint32_t VERSION {0x0010};
+static constexpr std::size_t BLOCK_SIZE {1024};
+static constexpr std::size_t NAMELEN {64};
+
+
+struct Header
+{
+	std::uint32_t version;
+	std::uint32_t total_entries;
+	struct {
+		std::uint32_t total_blocks;
+		std::uint32_t compressed_size;
+		std::uint32_t offset;
+	} directory;
+};
+
+
+struct Entry
+{
+	char name[NAMELEN];
+	std::uint32_t original_size;
+	std::uint32_t compressed_size;
+	std::uint32_t offset;
+};
+
+
+class Archive
+{
+public:
+	explicit Archive(const char* path);
+	void PrintNamesOfEntries() const;
+	std::size_t DirectoryBlocks() const;
+private:
+	const char* path;
+	Header header;
+	std::vector<Entry> entries;
+};
+
+
+}  // namespace Archive