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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef ROCKETCORESTYLESHEETPARSER_H
#define ROCKETCORESTYLESHEETPARSER_H
namespace Rocket {
namespace Core {
class PropertyDictionary;
class Stream;
class StyleSheetNode;
/**
Helper class for parsing a style sheet into its memory representation.
@author Lloyd Weehuizen
*/
class StyleSheetParser
{
public:
StyleSheetParser();
~StyleSheetParser();
/// Parses the given stream into the style sheet
/// @param node The root node the stream will be parsed into
/// @param stream The stream to read
/// @return The number of parsed rules, or -1 if an error occured.
int Parse(StyleSheetNode* node, Stream* stream);
/// Parses the given string into the property dictionary
/// @param parsed_properties The properties dictionary the properties will be read into
/// @param properties The properties to parse
/// @return True if the parse was successful, or false if an error occured.
bool ParseProperties(PropertyDictionary& parsed_properties, const String& properties);
private:
// Stream we're parsing from.
Stream* stream;
// Parser memory buffer.
String parse_buffer;
// How far we've read through the buffer.
size_t parse_buffer_pos;
// The name of the file we'r parsing.
String stream_file_name;
// Current line number we're parsing.
size_t line_number;
// Parses properties from the parse buffer into the dictionary
// @param properties The dictionary to store the properties in
bool ReadProperties(PropertyDictionary& properties);
// Import properties into the stylesheet node
// @param node Node to import into
// @param names The names of the nodes
// @param properties The dictionary of properties
// @param rule_specificity The specifity of the rule
bool ImportProperties(StyleSheetNode* node, const String& names, const PropertyDictionary& properties, int rule_specificity);
// Attempts to find one of the given character tokens in the active stream
// If it's found, buffer is filled with all content up until the token
// @param buffer The buffer that receives the content
// @param characters The character tokens to find
// @param remove_token If the token that caused the find to stop should be removed from the stream
bool FindToken(String& buffer, const char* tokens, bool remove_token);
// Attempts to find the next character in the active stream.
// If it's found, buffer is filled with the character
// @param buffer The buffer that receives the character, if read.
bool ReadCharacter(char& buffer);
// Fill the internal parse buffer
bool FillBuffer();
};
}
}
#endif
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