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/*
* Copyright (C) 2004-2012 Geometer Plus <[email protected]>
*
* 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 <cctype>
#include <ZLStringUtil.h>
#include <ZLFileImage.h>
#include <ZLTextStyleEntry.h>
#include "RtfBookReader.h"
#include "../../bookmodel/BookModel.h"
RtfBookReader::RtfBookReader(BookModel &model, const std::string &encoding) : RtfReader(encoding), myBookReader(model) {
}
static const std::size_t maxBufferSize = 1024;
void RtfBookReader::addCharData(const char *data, std::size_t len, bool convert) {
if (myCurrentState.ReadText) {
if (convert || myConverter.isNull()) {
myOutputBuffer.append(data, len);
if (myOutputBuffer.size() >= maxBufferSize) {
flushBuffer();
}
} else {
flushBuffer();
std::string newString(data, len);
characterDataHandler(newString);
}
}
}
void RtfBookReader::flushBuffer() {
if (!myOutputBuffer.empty()) {
if (myCurrentState.ReadText) {
if (!myConverter.isNull()) {
static std::string newString;
myConverter->convert(newString, myOutputBuffer.data(), myOutputBuffer.data() + myOutputBuffer.length());
characterDataHandler(newString);
newString.erase();
} else {
characterDataHandler(myOutputBuffer);
}
}
myOutputBuffer.erase();
}
}
void RtfBookReader::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:
if (on) {
flushBuffer();
if (myBookReader.paragraphIsOpen()) {
myBookReader.endParagraph();
}
}
myCurrentState.ReadText = !on;
break;
case DESTINATION_FOOTNOTE:
flushBuffer();
if (on) {
std::string id;
ZLStringUtil::appendNumber(id, myFootnoteIndex++);
myStateStack.push(myCurrentState);
myCurrentState.Id = id;
myCurrentState.ReadText = true;
myBookReader.addHyperlinkControl(FOOTNOTE, id);
myBookReader.addData(id);
myBookReader.addControl(FOOTNOTE, false);
myBookReader.setFootnoteTextModel(id);
myBookReader.addHyperlinkLabel(id);
myBookReader.pushKind(REGULAR);
myBookReader.beginParagraph();
} else {
myBookReader.endParagraph();
myBookReader.popKind();
if (!myStateStack.empty()) {
myCurrentState = myStateStack.top();
myStateStack.pop();
}
if (myStateStack.empty()) {
myBookReader.setMainTextModel();
} else {
myBookReader.setFootnoteTextModel(myCurrentState.Id);
}
}
break;
}
}
void RtfBookReader::insertImage(shared_ptr<ZLMimeType> mimeType, const std::string &fileName, std::size_t startOffset, std::size_t size) {
std::string id;
ZLStringUtil::appendNumber(id, myImageIndex++);
myBookReader.addImageReference(id);
const ZLFile file(fileName, mimeType);
myBookReader.addImage(id, new ZLFileImage(file, startOffset, size, ZLFileImage::ENCODING_HEX));
}
bool RtfBookReader::characterDataHandler(std::string &str) {
if (myCurrentState.ReadText) {
if (!myBookReader.paragraphIsOpen()) {
myBookReader.beginParagraph();
}
myBookReader.addData(str);
}
return true;
}
bool RtfBookReader::readDocument(const ZLFile &file) {
myImageIndex = 0;
myFootnoteIndex = 1;
myCurrentState.ReadText = true;
myBookReader.setMainTextModel();
myBookReader.pushKind(REGULAR);
myBookReader.beginParagraph();
bool code = RtfReader::readDocument(file);
flushBuffer();
myBookReader.endParagraph();
while (!myStateStack.empty()) {
myStateStack.pop();
}
return code;
}
void RtfBookReader::setFontProperty(FontProperty property) {
if (!myCurrentState.ReadText) {
//DPRINT("change style not in text.\n");
return;
}
flushBuffer();
switch (property) {
case FONT_BOLD:
if (myState.Bold) {
myBookReader.pushKind(STRONG);
} else {
myBookReader.popKind();
}
myBookReader.addControl(STRONG, myState.Bold);
break;
case FONT_ITALIC:
if (myState.Italic) {
if (!myState.Bold) {
//DPRINT("add style emphasis.\n");
myBookReader.pushKind(EMPHASIS);
myBookReader.addControl(EMPHASIS, true);
} else {
//DPRINT("add style emphasis and strong.\n");
myBookReader.popKind();
myBookReader.addControl(STRONG, false);
myBookReader.pushKind(EMPHASIS);
myBookReader.addControl(EMPHASIS, true);
myBookReader.pushKind(STRONG);
myBookReader.addControl(STRONG, true);
}
} else {
if (!myState.Bold) {
//DPRINT("remove style emphasis.\n");
myBookReader.addControl(EMPHASIS, false);
myBookReader.popKind();
} else {
//DPRINT("remove style strong n emphasis, add strong.\n");
myBookReader.addControl(STRONG, false);
myBookReader.popKind();
myBookReader.addControl(EMPHASIS, false);
myBookReader.popKind();
myBookReader.pushKind(STRONG);
myBookReader.addControl(STRONG, true);
}
}
break;
case FONT_UNDERLINED:
break;
}
}
void RtfBookReader::newParagraph() {
flushBuffer();
myBookReader.endParagraph();
myBookReader.beginParagraph();
if (myState.Alignment != ALIGN_UNDEFINED) {
setAlignment();
}
}
void RtfBookReader::setEncoding(int) {
}
void RtfBookReader::setAlignment() {
ZLTextStyleEntry entry(ZLTextStyleEntry::STYLE_OTHER_ENTRY);
entry.setAlignmentType(myState.Alignment);
myBookReader.addStyleEntry(entry);
// TODO: call addStyleCloseEntry somewhere (?)
}
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