First commit:

- changed Rect to derive from Shape and added Polygon class (also derived from Shape)
- added ImageMap class that encapsulates generalised functionality of image maps
- skeletal classes for VirtualKeyboard and VirtualKeyboardParser

svn-id: r32880

1 files changed, 257 insertions, 0 deletions

diff --git a/common/xmlparser.cpp b/common/xmlparser.cpp
new file mode 100644
index 0000000000..8ff93a4c59
--- /dev/null
+++ b/common/xmlparser.cpp
@@ -0,0 +1,257 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "common/util.h"
+#include "common/system.h"
+#include "common/events.h"
+#include "common/hashmap.h"
+#include "common/hash-str.h"
+#include "common/xmlparser.h"
+
+namespace Common {
+
+using namespace Graphics;
+
+bool XMLParser::parserError(const char *errorString, ...) {
+	_state = kParserError;
+
+	int pos = _pos;
+	int lineCount = 1;
+	int lineStart = 0;
+
+	do {
+		if (_text[pos] == '\n' || _text[pos] == '\r') {
+			lineCount++;
+			
+			if (lineStart == 0)
+				lineStart = MAX(pos + 1, _pos - 60);
+		}
+	} while (pos-- > 0);
+
+	char lineStr[70];
+	_text.stream()->seek(lineStart, SEEK_SET);
+	_text.stream()->readLine(lineStr, 70);
+
+	printf("  File <%s>, line %d:\n", _fileName.c_str(), lineCount);
+
+	bool startFull = lineStr[0] == '<';
+	bool endFull = lineStr[strlen(lineStr) - 1] == '>';
+
+	printf("%s%s%s\n", startFull ? "" : "...", endFull ? "" : "...", lineStr);
+
+	int cursor = MIN(_pos - lineStart, 70);
+
+	if (!startFull)
+		cursor += 3;
+
+	while (cursor--)
+		printf(" ");
+
+	printf("^\n");
+	printf("Parser error: ");
+
+	va_list args;
+	va_start(args, errorString);
+	vprintf(errorString, args);
+	va_end(args);
+
+	printf("\n");
+
+	return false;
+}
+
+bool XMLParser::parseActiveKey(bool closed) {
+	bool ignore = false;
+
+	// check if any of the parents must be ignored.
+	// if a parent is ignored, all children are too.
+	for (int i = _activeKey.size() - 1; i >= 0; --i) {
+		if (_activeKey[i]->ignore)
+			ignore = true;
+	}
+
+	if (ignore == false && keyCallback(_activeKey.top()->name) == false) {
+		return false;
+	}
+	
+	if (closed) {
+		delete _activeKey.pop();
+	}
+
+	return true;
+}
+
+bool XMLParser::parseKeyValue(Common::String keyName) {
+	assert(_activeKey.empty() == false);
+
+	if (_activeKey.top()->values.contains(keyName))
+		return false;
+
+	_token.clear();
+	char stringStart;
+
+	if (_text[_pos] == '"' || _text[_pos] == '\'') {
+		stringStart = _text[_pos++];
+
+		while (_text[_pos] && _text[_pos] != stringStart)
+			_token += _text[_pos++];
+
+		if (_text[_pos++] == 0)
+			return false;
+
+	} else if (!parseToken()) {
+		return false;
+	}
+
+	_activeKey.top()->values[keyName] = _token;
+	return true;
+}
+
+bool XMLParser::parse() {
+
+	if (_text.ready() == false)
+		return parserError("XML stream not ready for reading.");
+
+	bool activeClosure = false;
+	bool selfClosure = false;
+
+	_state = kParserNeedKey;
+	_pos = 0;
+	_activeKey.clear();
+	
+	while (_text[_pos]) {
+		if (_state == kParserError)
+			break;
+
+		if (skipSpaces())
+			continue;
+
+		if (skipComments())
+			continue;
+
+		switch (_state) {
+			case kParserNeedKey:
+				if (_text[_pos++] != '<') {
+					parserError("Parser expecting key start.");
+					break;
+				}
+
+				if (_text[_pos] == 0) {
+					parserError("Unexpected end of file.");
+					break;
+				}
+
+				if (_text[_pos] == '/' && _text[_pos + 1] != '*') {
+					_pos++;
+					activeClosure = true;
+				}
+
+				_state = kParserNeedKeyName;
+				break;
+
+			case kParserNeedKeyName:
+				if (!parseToken()) {
+					parserError("Invalid key name.");
+					break;
+				}
+
+				if (activeClosure) {
+					if (_activeKey.empty() || _token != _activeKey.top()->name) {
+						parserError("Unexpected closure.");
+						break;
+					}
+				} else {
+					ParserNode *node = new ParserNode;
+					node->name = _token;
+					node->ignore = false;
+					node->depth = _activeKey.size();
+					_activeKey.push(node);
+				}
+
+				_state = kParserNeedPropertyName;
+				break;
+
+			case kParserNeedPropertyName:
+				if (activeClosure) {
+					activeClosure = false;
+					delete _activeKey.pop();
+
+					if (_text[_pos++] != '>')
+						parserError("Invalid syntax in key closure.");
+					else 
+						_state = kParserNeedKey;
+
+					break;
+				}
+
+				selfClosure = (_text[_pos] == '/');
+
+				if ((selfClosure && _text[_pos + 1] == '>') || _text[_pos] == '>') {
+					if (parseActiveKey(selfClosure)) {
+						_pos += selfClosure ? 2 : 1;
+						_state = kParserNeedKey;
+					}
+					break;
+				}
+
+				if (!parseToken()) 
+					parserError("Error when parsing key value.");
+				else 
+					_state = kParserNeedPropertyOperator;
+
+				break;
+
+			case kParserNeedPropertyOperator:
+				if (_text[_pos++] != '=') 
+					parserError("Syntax error after key name.");
+				else  
+					_state = kParserNeedPropertyValue;
+
+				break;
+
+			case kParserNeedPropertyValue:
+				if (!parseKeyValue(_token)) 
+					parserError("Invalid key value.");
+				else 
+					_state = kParserNeedPropertyName;
+
+				break;
+
+			default:
+				break;
+		}
+	}
+
+	if (_state == kParserError)
+		return false;
+
+	if (_state != kParserNeedKey || !_activeKey.empty())
+		return parserError("Unexpected end of file.");
+
+	return true;
+}
+
+}
+