Initial commit

engines/m4/core/errors.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 "common/file.h"
+#include "common/textconsole.h"
+#include "m4/core/errors.h"
+
+namespace M4 {
+
+inline static bool quadchar_equals_string(uint32 code, const Common::String &str) {
+	return READ_BE_UINT32(str.c_str()) == code;
+}
+
+void error_show(const char *filename, uint32 line, quadchar errorCode, const char *fmt, ...) {
+	assert(fmt);
+
+	va_list va;
+	va_start(va, fmt);
+	Common::String msg = Common::String::vformat(fmt, va);
+	va_end(va);
+
+	error("%s", msg.c_str());
+}
+
+void error_show(const char *filename, uint32 line, quadchar errorCode) {
+	error_show(filename, line, errorCode, "No extra description");
+}
+
+void error_look_up(quadchar errorCode, char *result_string) {
+	Common::File f;
+	*result_string = '\0';
+
+	if (!f.open(ERROR_FILE))
+		return;
+
+	Common::String buffer;
+
+	while (!f.eos()) {
+		buffer = f.readString();
+		const char *mark = buffer.c_str() + 1;
+
+		if (quadchar_equals_string(errorCode, buffer) || quadchar_equals_string(errorCode, mark)) {
+			const char *src = (const char *)buffer.c_str() + 5;
+			int16 count = 0;
+
+			do {
+				*result_string++ = *src;
+				++count;
+			} while (*src++ && (count < MAX_STRING_LEN));
+
+			break;
+		}
+	}
+}
+
+} // namespace M4