1 files changed, 134 insertions, 0 deletions
diff --git a/src/core/file_sys/archive.h b/src/core/file_sys/archive.h
index ac5630bea..38145eed8 100644
--- a/src/core/file_sys/archive.h
+++ b/src/core/file_sys/archive.h
@@ -4,8 +4,16 @@
 
 #pragma once
 
+#include <memory>
+
 #include "common/common_types.h"
+#include "common/string_util.h"
+#include "common/bit_field.h"
+
+#include "core/file_sys/file.h"
+#include "core/file_sys/directory.h"
 
+#include "core/mem_map.h"
 #include "core/hle/kernel/kernel.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -13,6 +21,110 @@
 
 namespace FileSys {
 
+// Path string type
+enum LowPathType : u32 {
+    Invalid = 0,
+    Empty   = 1,
+    Binary  = 2,
+    Char    = 3,
+    Wchar   = 4
+};
+
+union Mode {
+    u32 hex;
+    BitField<0, 1, u32> read_flag;
+    BitField<1, 1, u32> write_flag;
+    BitField<2, 1, u32> create_flag;
+};
+
+class Path {
+public:
+
+    Path():
+        type(Invalid)
+    {
+    }
+
+    Path(LowPathType type, u32 size, u32 pointer):
+        type(type)
+    {
+        switch (type) {
+            case Binary:
+            {
+                u8* data = Memory::GetPointer(pointer);
+                binary = std::vector<u8>(data, data + size);
+                break;
+            }
+            case Char:
+            {
+                const char* data = reinterpret_cast<const char*>(Memory::GetPointer(pointer));
+                string = std::string(data, size - 1); // Data is always null-terminated.
+                break;
+            }
+            case Wchar:
+            {
+                const char16_t* data = reinterpret_cast<const char16_t*>(Memory::GetPointer(pointer));
+                u16str = std::u16string(data, size/2 - 1); // Data is always null-terminated.
+                break;
+            }
+        }
+    }
+
+    LowPathType GetType() const {
+        return type;
+    }
+
+    const std::string AsString() const {
+        switch (GetType()) {
+            case Char:
+                return string;
+            case Wchar:
+                return Common::UTF16ToUTF8(u16str);
+            case Empty:
+                return {};
+            default:
+                ERROR_LOG(KERNEL, "LowPathType cannot be converted to string!");
+                return {};
+        }
+    }
+
+    const std::u16string AsU16Str() const {
+        switch (GetType()) {
+            case Char:
+                return Common::UTF8ToUTF16(string);
+            case Wchar:
+                return u16str;
+            case Empty:
+                return {};
+            default:
+                ERROR_LOG(KERNEL, "LowPathType cannot be converted to u16string!");
+                return {};
+        }
+    }
+
+    const std::vector<u8> AsBinary() const {
+        switch (GetType()) {
+            case Binary:
+                return binary;
+            case Char:
+                return std::vector<u8>(string.begin(), string.end());
+            case Wchar:
+                return std::vector<u8>(u16str.begin(), u16str.end());
+            case Empty:
+                return {};
+            default:
+                ERROR_LOG(KERNEL, "LowPathType cannot be converted to binary!");
+                return {};
+        }
+    }
+
+private:
+    LowPathType type;
+    std::vector<u8> binary;
+    std::string string;
+    std::u16string u16str;
+};
+
 class Archive : NonCopyable {
 public:
     /// Supported archive types
@@ -36,6 +148,28 @@ public:
     virtual IdCode GetIdCode() const = 0;
 
     /**
+     * Open a file specified by its path, using the specified mode
+     * @param path Path relative to the archive
+     * @param mode Mode to open the file with
+     * @return Opened file, or nullptr
+     */
+    virtual std::unique_ptr<File> OpenFile(const std::string& path, const Mode mode) const = 0;
+
+    /**
+     * Create a directory specified by its path
+     * @param path Path relative to the archive
+     * @return Whether the directory could be created
+     */
+    virtual bool CreateDirectory(const std::string& path) const = 0;
+
+    /**
+     * Open a directory specified by its path
+     * @param path Path relative to the archive
+     * @return Opened directory, or nullptr
+     */
+    virtual std::unique_ptr<Directory> OpenDirectory(const std::string& path) const = 0;
+
+    /**
      * Read data from the archive
      * @param offset Offset in bytes to start reading data from
      * @param length Length in bytes of data to read from archive