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/*
* Copyright (c) 2004, Nate Nielsen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*
* CONTRIBUTORS
* Nate Nielsen <nielsen@memberwebs.com>
*
*/
#ifndef __RTFPARSER_H__
#define __RTFPARSER_H__
#include "usuals.h"
#include <stack>
#include <stdio.h>
class RtfHandler;
/*
* RtfParser
*
* A class that parses the RTF into it's tags and groups etc... It feeds its
* parsed data into into a handler interface (see below) for processing.
*
* Performs some basic conversion and sanity checking (unicode chars etc...)
* as well.
*/
class RtfParser
{
public:
RtfParser();
virtual ~RtfParser();
bool parse(string fileName);
bool parse(FILE* file);
void setHandler(RtfHandler* handler)
{ m_handler = handler; }
string getParseErrors() const
{ return m_parseErrors; }
int getDepth() const
{ return m_depth; }
void setHexParse(bool parse)
{ m_parseHex = parse; }
void setUnicode(bool unicode)
{ m_parseUnicode = unicode; }
protected:
RtfHandler* m_handler; // The current handler
int m_depth; // To keep track of group depth
bool m_parseHex; // Whether to parse hex chars or not
string m_parseErrors; // A list of all the RTF parsing errors
// Unicode char handling
bool m_parseUnicode;
typedef std::stack<int> StackInt;
StackInt m_uniEatStack;
int m_uniEat;
FILE* m_file; // The file we're currently parsing
string m_dataBuffer; // The block of data we're caching to send
private:
// Parse helpers
bool parseControlWord();
bool parseHexChar(int num, bool ansi);
// Convenience functions for calling the handler
void sendControlWord(const string& cw, int flags, int param);
void sendData(wchar_t ch);
void sendData(const wstring& data);
void flushData();
};
/*
* RtfHandler
*
* An interface called by RtfParser with tags and groups etc... parsed from
* an RTF file.
*/
class RtfHandler
{
public:
virtual ~RtfHandler() {};
// Called at the beginning of the document
virtual void startDocument(RtfParser* reader) = 0;
// Called at the end of the document
virtual void endDocument() = 0;
// Called when an RTF control word is hit. Flags below.
// If control word has no param then param is -1
virtual void controlWord(const string& cw, int flags, int param) = 0;
// Called when an RTF group opened
virtual void groupStart() = 0;
// Called when an RTF group is closed
virtual void groupEnd() = 0;
// A block of character data encountered
virtual void charData(const string& data) = 0;
// Flags for controlWord
enum
{
kAsterisk = 0x00000001,
kHasParam = 0x00000002,
kIsEncoded = 0x00000004
};
};
#endif // __RTFPARSER_H__
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