Move StringTokenizer to its own files (tokenizer.h/tokenizer.cpp).

svn-id: r48310

1 files changed, 61 insertions, 0 deletions

diff --git a/common/tokenizer.h b/common/tokenizer.h
new file mode 100644
index 0000000000..0ee6e37da7
--- /dev/null
+++ b/common/tokenizer.h
@@ -0,0 +1,61 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifndef COMMON_TOKENIZER_H
+#define COMMON_TOKENIZER_H
+
+#include "common/scummsys.h"
+#include "common/str.h"
+
+namespace Common {
+
+/**
+ * A simple non-optimized string tokenizer.
+ *
+ * Example of use:
+ * StringTokenizer("Now, this is a test!", " ,!") gives tokens "Now", "this", "is", "a" and "test" using nextToken().
+ */
+class StringTokenizer {
+public:
+	/**
+	 * Creates a StringTokenizer.
+	 * @param str The string to be tokenized.
+	 * @param delimiters String containing all the delimiter characters (i.e. the characters to be ignored).
+	 * @note Uses space, horizontal tab, carriage return, newline, form feed and vertical tab as delimiters by default.
+	 */
+	StringTokenizer(const String &str, const String &delimiters = " \t\r\n\f\v");
+	void reset();       ///< Resets the tokenizer to its initial state
+	bool empty() const; ///< Returns true if there are no more tokens left in the string, false otherwise
+	String nextToken(); ///< Returns the next token from the string (Or an empty string if there are no more tokens)
+
+private:
+	const String _str;        ///< The string to be tokenized
+	const String _delimiters; ///< String containing all the delimiter characters
+	uint         _tokenBegin; ///< Latest found token's begin (Valid after a call to nextToken(), zero otherwise)
+	uint         _tokenEnd;   ///< Latest found token's end (Valid after a call to nextToken(), zero otherwise)
+};
+
+} // End of namespace Common
+
+#endif