Restructure native codebase

native/jni/boot/cpio.hpp

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <stdint.h>
+#include <string>
+#include <memory>
+#include <map>
+#include <string_view>
+
+struct cpio_newc_header;
+
+struct cpio_entry {
+    uint32_t mode;
+    uint32_t uid;
+    uint32_t gid;
+    uint32_t filesize;
+    void *data;
+
+    explicit cpio_entry(uint32_t mode = 0);
+    explicit cpio_entry(const cpio_newc_header *h);
+    ~cpio_entry() { free(data); }
+};
+
+class cpio {
+public:
+    struct StringCmp {
+        using is_transparent = void;
+        bool operator()(std::string_view a, std::string_view b) const {
+            return a < b;
+        }
+    };
+    using entry_map = std::map<std::string, std::unique_ptr<cpio_entry>, StringCmp>;
+
+    void load_cpio(const char *file);
+    void dump(const char *file);
+    void rm(const char *name, bool r = false);
+    void extract();
+    bool extract(const char *name, const char *file);
+    bool exists(const char *name);
+    void add(mode_t mode, const char *name, const char *file);
+    void mkdir(mode_t mode, const char *name);
+    void ln(const char *target, const char *name);
+    bool mv(const char *from, const char *to);
+
+protected:
+    entry_map entries;
+
+    static void extract_entry(const entry_map::value_type &e, const char *file);
+    void rm(entry_map::iterator &it);
+    void mv(entry_map::iterator &it, const char *name);
+
+private:
+    void dump(FILE *out);
+    void insert(std::string_view name, cpio_entry *e);
+    void load_cpio(const char *buf, size_t sz);
+};