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engines/vcruise/textparser.h

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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/>.
+ *
+ */
+
+#ifndef VCRUISE_TEXTPARSER_H
+#define VCRUISE_TEXTPARSER_H
+
+#include "common/hashmap.h"
+#include "common/hash-str.h"
+#include "common/str.h"
+#include "common/memstream.h"
+
+namespace Common {
+
+class Path;
+class ReadStream;
+
+} // End of namespace Common
+
+namespace VCruise {
+
+struct TextParserState {
+	TextParserState();
+
+	uint _lineNum;
+	uint _col;
+	bool _prevWasCR;
+	bool _isParsingComment;
+};
+
+class TextParser {
+public:
+	explicit TextParser(Common::ReadStream *stream);
+
+	bool parseToken(Common::String &outString, TextParserState &outState);
+
+	bool readOneChar(char &outC, TextParserState &outState);
+	bool skipWhitespaceAndComments(char &outC, TextParserState &outState);
+
+	void requeue(const char *chars, uint numChars, const TextParserState &state);
+	void requeue(const Common::String &str, const TextParserState &state);
+
+	void expectToken(Common::String &outToken, const Common::Path &blamePath);
+	void expectShort(int16 &outInt, const Common::Path &blamePath);
+	void expectInt(int &outInt, const Common::Path &blamePath);
+	void expectUInt(uint &outUInt, const Common::Path &blamePath);
+	void expectLine(Common::String &outToken, const Common::Path &blamePath, bool continueToNextLine);
+
+	void expect(const char *str, const Common::Path &blamePath);
+
+	void skipToEOL();
+	bool checkEOL();
+
+private:
+	void expectTokenInternal(Common::String &outToken, const Common::Path &blamePath, TextParserState &outState);
+
+	static bool isDelimiter(char c);
+	static bool isCompoundDelimiter(char c1, char c2);
+	static bool isWhitespace(char c);
+
+	TextParserState _state;
+
+	Common::ReadStream *_stream;
+
+	static const uint kReturnedBufferSize = 8;
+
+	char _returnedBuffer[kReturnedBufferSize];
+	uint _returnedBufferPos;
+};
+
+} // End of namespace VCruise
+
+#endif