Initial commit

engines/glk/glulx/glulx.cpp

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+/* 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/>.
+ *
+ */
+
+#include "glk/glulx/glulx.h"
+#include "common/config-manager.h"
+#include "common/translation.h"
+
+namespace Glk {
+namespace Glulx {
+
+Glulx *g_vm;
+
+Glulx::Glulx(OSystem *syst, const GlkGameDescription &gameDesc) : GlkAPI(syst, gameDesc),
+		vm_exited_cleanly(false), gamefile_start(0), gamefile_len(0), memmap(nullptr), stack(nullptr),
+		ramstart(0), endgamefile(0), origendmem(0),  stacksize(0), startfuncaddr(0), checksum(0),
+		stackptr(0), frameptr(0), pc(0), prevpc(0), origstringtable(0), stringtable(0), valstackbase(0),
+		localsbase(0), endmem(0), protectstart(0), protectend(0),
+		stream_char_handler(nullptr), stream_unichar_handler(nullptr),
+		// main
+		library_autorestore_hook(nullptr),
+		// accel
+		classes_table(0), indiv_prop_start(0), class_metaclass(0), object_metaclass(0),
+		routine_metaclass(0), string_metaclass(0), self(0), num_attr_bytes(0), cpv__start(0),
+		accelentries(nullptr),
+		// heap
+		heap_start(0), alloc_count(0), heap_head(nullptr), heap_tail(nullptr),
+		// serial
+		max_undo_level(8), undo_chain_size(0), undo_chain_num(0), undo_chain(nullptr), ramcache(nullptr),
+		// string
+		iosys_mode(0), iosys_rock(0), tablecache_valid(false), glkio_unichar_han_ptr(nullptr) {
+	g_vm = this;
+
+	glkopInit();
+}
+
+void Glulx::runGame() {
+	if (!is_gamefile_valid())
+		return;
+
+	gamefile_start = 0;
+	gamefile_len = _gameFile.size();
+	setup_vm();
+
+	if (!init_dispatch())
+		return;
+
+	if (library_autorestore_hook)
+		library_autorestore_hook();
+
+	execute_loop();
+	finalize_vm();
+
+	gamefile_start = 0;
+	gamefile_len = 0;
+	init_err = nullptr;
+	vm_exited_cleanly = true;
+
+	profile_quit();
+}
+
+bool Glulx::is_gamefile_valid() {
+	if (_gameFile.size() < 8) {
+		GUIErrorMessage(_("This is too short to be a valid Glulx file."));
+		return false;
+	}
+
+	if (_gameFile.readUint32BE() != MKTAG('G', 'l', 'u', 'l')) {
+		GUIErrorMessage(_("This is not a valid Glulx file."));
+		return false;
+	}
+
+	// We support version 2.0 through 3.1.*
+	uint version = _gameFile.readUint32BE();
+	if (version < 0x20000) {
+		GUIErrorMessage(_("This Glulx file is too old a version to execute."));
+		return false;
+	}
+	if (version >= 0x30200) {
+		GUIErrorMessage(_("This Glulx file is too new a version to execute."));
+		return false;
+	}
+
+	return true;
+}
+
+void Glulx::fatal_error_handler(const char *str, const char *arg, bool useVal, int val) {
+	Common::String msg = Common::String::format("Glulx fatal error: %s", str);
+
+	if (arg || useVal) {
+		msg += " (";
+
+		if (arg)
+			msg += Common::String::format("%s", arg);
+		if (arg && useVal)
+			msg += " ";
+		if (useVal)
+			msg += Common::String::format("%x", val);
+
+		msg += ")";
+	}
+
+	error("%s", msg.c_str());
+}
+
+void Glulx::nonfatal_warning_handler(const char *str, const char *arg, bool useVal, int val) {
+	Common::String msg = Common::String::format("Glulx warning: %s", str);
+
+	if (arg || useVal) {
+		msg += " (";
+
+		if (arg)
+			msg += Common::String::format("%s", arg);
+		if (arg && useVal)
+			msg += " ";
+		if (useVal)
+			msg += Common::String::format("%x", val);
+
+		msg += ")";
+	}
+
+	warning("%s", msg.c_str());
+}
+
+void Glulx::glulx_sort(void *addr, int count, int size, int(*comparefunc)(const void *p1, const void *p2)) {
+	qsort(addr, count, size, comparefunc);
+}
+
+} // End of namespace Glulx
+} // End of namespace Glk