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/*
* Copyright (C) 2004-2012 Geometer Plus <contact@geometerplus.com>
*
* 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.
*/
#include <cstring>
#include <cstdlib>
#include <string>
#include "RtfReader.h"
#include "RtfReaderStream.h"
class RtfTextOnlyReader : public RtfReader {
public:
RtfTextOnlyReader(char *buffer, std::size_t maxSize);
~RtfTextOnlyReader();
std::size_t readSize() const;
protected:
void addCharData(const char *data, std::size_t len, bool convert);
void insertImage(shared_ptr<ZLMimeType> mimeType, const std::string &fileName, std::size_t startOffset, std::size_t size);
void setEncoding(int code);
void switchDestination(DestinationType destination, bool on);
void setAlignment();
void setFontProperty(FontProperty property);
void newParagraph();
void interrupt();
private:
struct RtfTextOnlyReaderState {
bool ReadText;
};
RtfTextOnlyReaderState myCurrentState;
private:
char* myBuffer;
const std::size_t myMaxSize;
std::size_t myFilledSize;
};
RtfTextOnlyReader::RtfTextOnlyReader(char *buffer, std::size_t maxSize) : RtfReader(std::string()), myBuffer(buffer), myMaxSize(maxSize), myFilledSize(0) {
myCurrentState.ReadText = true;
}
RtfTextOnlyReader::~RtfTextOnlyReader() {
}
void RtfTextOnlyReader::addCharData(const char *data, std::size_t len, bool) {
if (myBuffer == 0) {
return;
}
if (myCurrentState.ReadText) {
if (myFilledSize < myMaxSize) {
len = std::min((std::size_t)len, myMaxSize - myFilledSize);
std::memcpy(myBuffer + myFilledSize, data, len);
myFilledSize += len;
}
if (myFilledSize < myMaxSize) {
myBuffer[myFilledSize++]=' ';
} else {
interrupt();
}
}
}
std::size_t RtfTextOnlyReader::readSize() const {
return myFilledSize;
}
void RtfTextOnlyReader::insertImage(shared_ptr<ZLMimeType>, const std::string&, std::size_t, std::size_t) {
}
void RtfTextOnlyReader::setEncoding(int) {
}
void RtfTextOnlyReader::switchDestination(DestinationType destination, bool on) {
switch (destination) {
case DESTINATION_NONE:
break;
case DESTINATION_SKIP:
case DESTINATION_INFO:
case DESTINATION_TITLE:
case DESTINATION_AUTHOR:
case DESTINATION_STYLESHEET:
myCurrentState.ReadText = !on;
break;
case DESTINATION_PICTURE:
myCurrentState.ReadText = !on;
break;
case DESTINATION_FOOTNOTE:
if (on) {
myCurrentState.ReadText = true;
}
break;
}
}
void RtfTextOnlyReader::setAlignment() {
}
void RtfTextOnlyReader::setFontProperty(FontProperty) {
}
void RtfTextOnlyReader::newParagraph() {
}
void RtfTextOnlyReader::interrupt() {
}
RtfReaderStream::RtfReaderStream(const ZLFile& file, std::size_t maxSize) : myFile(file), myBuffer(0), mySize(maxSize) {
}
RtfReaderStream::~RtfReaderStream() {
close();
}
bool RtfReaderStream::open() {
if (mySize != 0) {
myBuffer = new char[mySize];
}
RtfTextOnlyReader reader(myBuffer, mySize);
reader.readDocument(myFile);
mySize = reader.readSize();
myOffset = 0;
return true;
}
std::size_t RtfReaderStream::read(char *buffer, std::size_t maxSize) {
maxSize = std::min(maxSize, mySize - myOffset);
if ((buffer != 0) && (myBuffer !=0)) {
std::memcpy(buffer, myBuffer + myOffset, maxSize);
}
myOffset += maxSize;
return maxSize;
}
void RtfReaderStream::close() {
if (myBuffer != 0) {
delete[] myBuffer;
myBuffer = 0;
}
}
void RtfReaderStream::seek(int offset, bool absoluteOffset) {
if (!absoluteOffset) {
offset += myOffset;
}
myOffset = std::min(mySize, (std::size_t)std::max(0, offset));
}
std::size_t RtfReaderStream::offset() const {
return myOffset;
}
std::size_t RtfReaderStream::sizeOfOpened() {
return mySize;
}
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