Initial commit

engines/sword25/package/packagemanager_script.cpp

@@ -0,0 +1,175 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * This code is based on Broken Sword 2.5 engine
+ *
+ * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
+ *
+ * Licensed under GNU GPL v2
+ *
+ */
+
+#include "sword25/kernel/common.h"
+#include "sword25/kernel/kernel.h"
+#include "sword25/script/script.h"
+#include "sword25/script/luabindhelper.h"
+
+#include "sword25/package/packagemanager.h"
+
+namespace Sword25 {
+
+static PackageManager *getPM() {
+	Kernel *pKernel = Kernel::getInstance();
+	assert(pKernel);
+	PackageManager *pPM = pKernel->getPackage();
+	assert(pPM);
+	return pPM;
+}
+
+static int loadPackage(lua_State *L) {
+	PackageManager *pPM = getPM();
+
+	lua_pushbooleancpp(L, pPM->loadPackage(luaL_checkstring(L, 1), luaL_checkstring(L, 2)));
+
+	return 1;
+}
+
+static int loadDirectoryAsPackage(lua_State *L) {
+	PackageManager *pPM = getPM();
+
+	lua_pushbooleancpp(L, pPM->loadDirectoryAsPackage(luaL_checkstring(L, 1), luaL_checkstring(L, 2)));
+
+	return 1;
+}
+
+static void splitSearchPath(const Common::String &path, Common::String &directory, Common::String &filter) {
+	// Scan backwards for a trailing slash
+	const char *sPath = path.c_str();
+	const char *lastSlash = sPath + strlen(sPath) - 1;
+	while ((lastSlash >= sPath) && (*lastSlash != '/')) --lastSlash;
+
+	if (lastSlash >= sPath) {
+		directory = "";
+		filter = path;
+	} else {
+		directory = Common::String(sPath, lastSlash - sPath);
+		filter = Common::String(lastSlash + 1);
+	}
+}
+
+static void doSearch(lua_State *L, const Common::String &path, uint type) {
+	PackageManager *pPM = getPM();
+
+	// Der Packagemanager-Service muss den Suchstring und den Pfad getrennt übergeben bekommen.
+	// Um die Benutzbarkeit zu verbessern sollen Skriptprogrammierer dieses als ein Pfad übergeben können.
+	// Daher muss der übergebene Pfad am letzten Slash aufgesplittet werden.
+	Common::String directory;
+	Common::String filter;
+	splitSearchPath(path, directory, filter);
+
+	// Ergebnistable auf dem Lua-Stack erstellen
+	lua_newtable(L);
+
+	// Suche durchführen und die Namen aller gefundenen Dateien in die Ergebnistabelle einfügen.
+	// Als Indizes werden fortlaufende Nummern verwandt.
+	uint resultNr = 1;
+	Common::ArchiveMemberList list;
+	int numMatches;
+
+	numMatches = pPM->doSearch(list, filter, directory, type);
+	if (numMatches) {
+		for (Common::ArchiveMemberList::iterator it = list.begin(); it != list.end(); ++it) {
+			lua_pushnumber(L, resultNr);
+			lua_pushstring(L, (*it)->getName().c_str());
+			lua_settable(L, -3);
+			resultNr++;
+		}
+	}
+}
+
+static int findFiles(lua_State *L) {
+	doSearch(L, luaL_checkstring(L, 1), PackageManager::FT_FILE);
+	return 1;
+}
+
+static int findDirectories(lua_State *L) {
+	doSearch(L, luaL_checkstring(L, 1), PackageManager::FT_DIRECTORY);
+	return 1;
+}
+
+static int getFileAsString(lua_State *L) {
+	PackageManager *pPM = getPM();
+
+	uint fileSize;
+	char *fileData = (char *)pPM->getFile(luaL_checkstring(L, 1), &fileSize);
+	if (fileData) {
+		lua_pushlstring(L, fileData, fileSize);
+		delete[] fileData;
+
+		return 1;
+	} else
+		return 0;
+}
+
+static int fileExists(lua_State *L) {
+	lua_pushbooleancpp(L, getPM()->fileExists(luaL_checkstring(L, 1)));
+	return 1;
+}
+
+// Marks a function that should never be used
+static int dummyFuncError(lua_State *L) {
+	error("Dummy function invoked by LUA");
+	return 1;
+}
+
+static const char *PACKAGE_LIBRARY_NAME = "Package";
+
+static const luaL_reg PACKAGE_FUNCTIONS[] = {
+	{"LoadPackage", loadPackage},
+	{"LoadDirectoryAsPackage", loadDirectoryAsPackage},
+	{"GetCurrentDirectory", dummyFuncError},
+	{"ChangeDirectory", dummyFuncError},
+	{"GetAbsolutePath", dummyFuncError},
+	{"GetFileSize", dummyFuncError},
+	{"GetFileType", dummyFuncError},
+	{"FindFiles", findFiles},
+	{"FindDirectories", findDirectories},
+	{"GetFileAsString", getFileAsString},
+	{"FileExists", fileExists},
+	{0, 0}
+};
+
+bool PackageManager::registerScriptBindings() {
+	Kernel *pKernel = Kernel::getInstance();
+	assert(pKernel);
+	ScriptEngine *pScript = pKernel->getScript();
+	assert(pScript);
+	lua_State *L = static_cast<lua_State *>(pScript->getScriptObject());
+	assert(L);
+
+	if (!LuaBindhelper::addFunctionsToLib(L, PACKAGE_LIBRARY_NAME, PACKAGE_FUNCTIONS))
+		return false;
+
+	return true;
+}
+
+} // End of namespace Sword25