GODOT IS OPEN SOURCE

1 files changed, 367 insertions, 0 deletions

diff --git a/core/io/file_access_zip.cpp b/core/io/file_access_zip.cpp
new file mode 100644
index 0000000000..72e929619f
--- /dev/null
+++ b/core/io/file_access_zip.cpp
@@ -0,0 +1,367 @@
+/*************************************************************************/
+/*  file_access_zip.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.                */
+/*************************************************************************/
+#ifdef MINIZIP_ENABLED
+
+#include "file_access_zip.h"
+
+#include "core/os/file_access.h"
+
+ZipArchive* ZipArchive::instance = NULL;
+
+extern "C" {
+
+static void* godot_open(void* data, const char* p_fname, int mode) {
+
+	if (mode & ZLIB_FILEFUNC_MODE_WRITE) {
+		return NULL;
+	};
+
+	FileAccess* f = (FileAccess*)data;
+	f->open(p_fname, FileAccess::READ);
+
+	return f->is_open()?data:NULL;
+
+};
+
+static uLong godot_read(void* data, void* fdata, void* buf, uLong size) {
+
+	FileAccess* f = (FileAccess*)data;
+	f->get_buffer((uint8_t*)buf, size);
+	return size;
+};
+
+static uLong godot_write(voidpf opaque, voidpf stream, const void* buf, uLong size) {
+
+	return 0;
+};
+
+
+static long godot_tell (voidpf opaque, voidpf stream) {
+
+	FileAccess* f = (FileAccess*)opaque;
+	return f->get_pos();
+};
+
+static long godot_seek(voidpf opaque, voidpf stream, uLong offset, int origin) {
+
+	FileAccess* f = (FileAccess*)opaque;
+
+	int pos = offset;
+	switch (origin) {
+
+	case ZLIB_FILEFUNC_SEEK_CUR:
+		pos = f->get_pos() + offset;
+		break;
+	case ZLIB_FILEFUNC_SEEK_END:
+		pos = f->get_len() + offset;
+		break;
+	default:
+		break;
+	};
+
+	f->seek(pos);
+	return 0;
+};
+
+
+static int godot_close(voidpf opaque, voidpf stream) {
+
+	FileAccess* f = (FileAccess*)opaque;
+	f->close();
+	return 0;
+};
+
+static int godot_testerror(voidpf opaque, voidpf stream) {
+
+	FileAccess* f = (FileAccess*)opaque;
+	return f->get_error()!=OK?1:0;
+};
+
+
+};
+
+
+void ZipArchive::close_handle(unzFile p_file) const {
+
+	ERR_FAIL_COND(!p_file);
+	FileAccess* f = (FileAccess*)unzGetOpaque(p_file);
+	unzCloseCurrentFile(p_file);
+	unzClose(p_file);
+	memdelete(f);
+};
+
+unzFile ZipArchive::get_file_handle(String p_file) const {
+
+	ERR_FAIL_COND_V(!file_exists(p_file), NULL);
+	File file = files[p_file];
+
+	FileAccess* f = FileAccess::open(packages[file.package].filename, FileAccess::READ);
+	ERR_FAIL_COND_V(!f, NULL);
+
+	zlib_filefunc_def io;
+
+	io.opaque = f;
+	io.zopen_file = godot_open;
+	io.zread_file = godot_read;
+	io.zwrite_file = godot_write;
+
+	io.ztell_file = godot_tell;
+	io.zseek_file = godot_seek;
+	io.zclose_file = godot_close;
+	io.zerror_file = godot_testerror;
+
+	unzFile pkg = unzOpen2(packages[file.package].filename.utf8().get_data(), &io);
+	ERR_FAIL_COND_V(!pkg, NULL);
+	unzGoToFilePos(pkg, &file.file_pos);
+	if (unzOpenCurrentFile(pkg) != UNZ_OK) {
+
+		unzClose(pkg);
+		ERR_FAIL_V(NULL);
+	};
+
+	return pkg;
+};
+
+bool ZipArchive::try_open_pack(const String& p_name) {
+
+	printf("opening pack %ls, %i, %i\n", p_name.c_str(), p_name.extension().nocasecmp_to("zip"), p_name.extension().nocasecmp_to("pcz"));
+	if (p_name.extension().nocasecmp_to("zip") != 0 && p_name.extension().nocasecmp_to("pcz") != 0)
+		return false;
+
+	zlib_filefunc_def io;
+
+	FileAccess* f = FileAccess::open(p_name, FileAccess::READ);
+	if (!f)
+		return false;
+	io.opaque = f;
+	io.zopen_file = godot_open;
+	io.zread_file = godot_read;
+	io.zwrite_file = godot_write;
+
+	io.ztell_file = godot_tell;
+	io.zseek_file = godot_seek;
+	io.zclose_file = godot_close;
+	io.zerror_file = godot_testerror;
+
+	unzFile zfile = unzOpen2(p_name.utf8().get_data(), &io);
+	ERR_FAIL_COND_V(!zfile, false);
+
+	unz_global_info64 gi;
+	int err = unzGetGlobalInfo64(zfile, &gi);
+	ERR_FAIL_COND_V(err!=UNZ_OK, false);
+
+	Package pkg;
+	pkg.filename = p_name;
+	pkg.zfile = zfile;
+	packages.push_back(pkg);
+	int pkg_num = packages.size()-1;
+
+	for (unsigned int i=0;i<gi.number_entry;i++) {
+
+		char filename_inzip[256];
+
+		unz_file_info64 file_info;
+		err = unzGetCurrentFileInfo64(zfile,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
+		ERR_CONTINUE(err != UNZ_OK);
+
+		File f;
+		f.package = pkg_num;
+		unzGetFilePos(zfile, &f.file_pos);
+
+		String fname = String("res://") + filename_inzip;
+		files[fname] = f;
+
+		PackedData::get_singleton()->add_path(p_name, fname, 0, 0, this);
+
+		if ((i+1)<gi.number_entry) {
+			unzGoToNextFile(zfile);
+		};
+	};
+
+	return true;
+};
+
+bool ZipArchive::file_exists(String p_name) const {
+
+	return files.has(p_name);
+};
+
+FileAccess* ZipArchive::get_file(const String& p_path, PackedData::PackedFile* p_file) {
+
+	return memnew(FileAccessZip(p_path, *p_file));
+};
+
+
+ZipArchive* ZipArchive::get_singleton() {
+
+	if (instance == NULL) {
+		instance = memnew(ZipArchive);
+	};
+
+	return instance;
+};
+
+ZipArchive::ZipArchive() {
+
+	instance = this;
+	//fa_create_func = FileAccess::get_create_func();
+};
+
+ZipArchive::~ZipArchive() {
+
+	for (int i=0; i<packages.size(); i++) {
+
+		FileAccess* f = (FileAccess*)unzGetOpaque(packages[i].zfile);
+		unzClose(packages[i].zfile);
+		memdelete(f);
+	};
+
+	packages.clear();
+};
+
+
+Error FileAccessZip::_open(const String& p_path, int p_mode_flags) {
+
+	close();
+
+	ERR_FAIL_COND_V(p_mode_flags & FileAccess::WRITE, FAILED);
+	ZipArchive* arch = ZipArchive::get_singleton();
+	ERR_FAIL_COND_V(!arch, FAILED);
+	zfile = arch->get_file_handle(p_path);
+	ERR_FAIL_COND_V(!zfile, FAILED);
+
+	int err = unzGetCurrentFileInfo64(zfile,&file_info,NULL,0,NULL,0,NULL,0);
+	ERR_FAIL_COND_V(err != UNZ_OK, FAILED);
+
+	return OK;
+};
+
+void FileAccessZip::close() {
+
+	if (!zfile)
+		return;
+
+	ZipArchive* arch = ZipArchive::get_singleton();
+	ERR_FAIL_COND(!arch);
+	arch->close_handle(zfile);
+	zfile = NULL;
+};
+
+bool FileAccessZip::is_open() const {
+
+	return zfile != NULL;
+};
+
+void FileAccessZip::seek(size_t p_position) {
+
+	ERR_FAIL_COND(!zfile);
+	unzSeekCurrentFile(zfile, p_position);
+};
+
+void FileAccessZip::seek_end(int64_t p_position) {
+
+	ERR_FAIL_COND(!zfile);
+	unzSeekCurrentFile(zfile, get_len() + p_position);
+};
+
+size_t FileAccessZip::get_pos() const {
+
+	ERR_FAIL_COND_V(!zfile, 0);
+	return unztell(zfile);
+};
+
+size_t FileAccessZip::get_len() const {
+
+	ERR_FAIL_COND_V(!zfile, 0);
+	return file_info.uncompressed_size;
+};
+
+bool FileAccessZip::eof_reached() const {
+
+	ERR_FAIL_COND_V(!zfile, true);
+
+	return at_eof;
+};
+
+uint8_t FileAccessZip::get_8() const {
+
+	uint8_t ret = 0;
+	get_buffer(&ret, 1);
+	return ret;
+};
+
+int FileAccessZip::get_buffer(uint8_t *p_dst,int p_length) const {
+
+	ERR_FAIL_COND_V(!zfile, -1);
+	at_eof = unzeof(zfile);
+	if (at_eof)
+		return 0;
+	int read = unzReadCurrentFile(zfile, p_dst, p_length);
+	ERR_FAIL_COND_V(read < 0, read);
+	if (read < p_length)
+		at_eof = true;
+	return read;
+};
+
+Error FileAccessZip::get_error() const {
+
+	if (!zfile) {
+
+		return ERR_UNCONFIGURED;
+	};
+	if (eof_reached()) {
+		return ERR_FILE_EOF;
+	};
+
+	return OK;
+};
+
+void FileAccessZip::store_8(uint8_t p_dest) {
+
+	ERR_FAIL();
+};
+
+bool FileAccessZip::file_exists(const String& p_name) {
+
+	return false;
+};
+
+
+FileAccessZip::FileAccessZip(const String& p_path, const PackedData::PackedFile& p_file) {
+
+	zfile = NULL;
+	_open(p_path, FileAccess::READ);
+};
+
+FileAccessZip::~FileAccessZip() {
+
+	close();
+};
+
+#endif