1 files changed, 188 insertions, 0 deletions

diff --git a/core/io/file_access_memory.cpp b/core/io/file_access_memory.cpp
new file mode 100644
index 000000000..a1dd2e48b
--- /dev/null
+++ b/core/io/file_access_memory.cpp
@@ -0,0 +1,188 @@
+/*************************************************************************/
+/*  file_access_memory.cpp                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "file_access_memory.h"
+
+#include "os/dir_access.h"
+#include "os/copymem.h"
+#include "globals.h"
+#include "map.h"
+
+static Map<String, Vector<uint8_t> >* files = NULL;
+
+void FileAccessMemory::register_file(String p_name, Vector<uint8_t> p_data) {
+
+	if (!files) {
+		files = memnew((Map<String, Vector<uint8_t> >));
+	};
+
+	String name;
+	if (Globals::get_singleton())
+		name = Globals::get_singleton()->globalize_path(p_name);
+	else
+		name = p_name;
+	name = DirAccess::normalize_path(name);
+
+	(*files)[name] = p_data;
+};
+
+void FileAccessMemory::cleanup() {
+
+	if (!files)
+		return;
+
+	memdelete(files);
+};
+
+
+FileAccess* FileAccessMemory::create() {
+
+	return memnew(FileAccessMemory);
+};
+
+bool FileAccessMemory::file_exists(const String& p_name) {
+
+	String name = fix_path(p_name);
+	name = DirAccess::normalize_path(name);
+
+	return files && (files->find(name) != NULL);
+};
+
+
+Error FileAccessMemory::_open(const String& p_path, int p_mode_flags) {
+
+	ERR_FAIL_COND_V(!files, ERR_FILE_NOT_FOUND);
+
+	String name = fix_path(p_path);
+	name = DirAccess::normalize_path(name);
+
+	Map<String, Vector<uint8_t> >::Element* E = files->find(name);
+	ERR_FAIL_COND_V(!E, ERR_FILE_NOT_FOUND);
+
+	data = &(E->get()[0]);
+	length = E->get().size();
+	pos = 0;
+
+	return OK;
+};
+
+void FileAccessMemory::close() {
+
+	data = NULL;
+};
+
+bool FileAccessMemory::is_open() const {
+
+	return data != NULL;
+};
+
+void FileAccessMemory::seek(size_t p_position) {
+
+	ERR_FAIL_COND(!data);
+	pos = p_position;
+};
+
+void FileAccessMemory::seek_end(int64_t p_position) {
+
+	ERR_FAIL_COND(!data);
+	pos = length + p_position;
+};
+
+size_t FileAccessMemory::get_pos() const {
+
+	ERR_FAIL_COND_V(!data, 0);
+	return pos;
+};
+
+size_t FileAccessMemory::get_len() const {
+
+	ERR_FAIL_COND_V(!data, 0);
+	return length;
+};
+
+bool FileAccessMemory::eof_reached() const {
+
+	return pos >= length;
+};
+
+uint8_t FileAccessMemory::get_8() const {
+
+	uint8_t ret;
+	if (pos < length) {
+		ret = data[pos];
+	};
+	++pos;
+
+	return ret;
+};
+
+int FileAccessMemory::get_buffer(uint8_t *p_dst,int p_length) const {
+
+	ERR_FAIL_COND_V(!data, -1);
+
+	int left = length - pos;
+	int read = MIN(p_length, left);
+
+	if (read < p_length) {
+		WARN_PRINT("Reading less data than requested");
+	};
+
+	copymem(p_dst, &data[pos], read);
+	pos += p_length;
+
+	return read;
+};
+
+Error FileAccessMemory::get_error() const {
+
+	return pos >= length ? ERR_FILE_EOF : OK;
+};
+
+void FileAccessMemory::store_8(uint8_t p_byte) {
+
+	ERR_FAIL_COND(!data);
+	ERR_FAIL_COND(pos >= length);
+	data[pos++] = p_byte;
+};
+
+void FileAccessMemory::store_buffer(const uint8_t *p_src,int p_length) {
+
+	int left = length - pos;
+	int write = MIN(p_length, left);
+	if (write < p_length) {
+		WARN_PRINT("Writing less data than requested");
+	};
+
+	copymem(&data[pos], p_src, write);
+	pos += p_length;
+};
+
+FileAccessMemory::FileAccessMemory() {
+
+	data = NULL;
+}