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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 <cctype>
#include "PPLBookReader.h"
#include <ZLInputStream.h>
static const std::size_t BUFFER_SIZE = 2048;
PPLBookReader::PPLBookReader(BookModel &model, const std::string &encoding) : EncodedTextReader(encoding), myModelReader(model) {
myBuffer = new char[BUFFER_SIZE + 1];
}
PPLBookReader::~PPLBookReader() {
delete[] myBuffer;
}
bool PPLBookReader::currentParagraphIsEmpty() const {
const char *ptr = myCurrentParagraph.data();
const char *end = ptr + myCurrentParagraph.length();
for (; ptr < end; ++ptr) {
if (!std::isspace((unsigned char)*ptr)) {
return false;
}
}
return true;
}
void PPLBookReader::addParagraph() {
static const std::string END_OF_TEXT = "<* >";
if (!myCurrentParagraph.empty()) {
if (currentParagraphIsEmpty()) {
++myEmptyLineCounter;
if (myEmptyLineCounter >= 2) {
myModelReader.beginParagraph(ZLTextParagraph::EMPTY_LINE_PARAGRAPH);
myModelReader.endParagraph();
}
} else if (myEmptyLineCounter < 2) {
myModelReader.beginParagraph();
myModelReader.addControl(TITLE, true);
myModelReader.addData(myCurrentParagraph);
myModelReader.endParagraph();
} else if (myCurrentParagraph[0] == 9) {
myModelReader.beginParagraph();
myModelReader.addData(myCurrentParagraph);
myModelReader.endParagraph();
} else if ((myCurrentParagraph.length() >= 2) &&
(myCurrentParagraph[0] == '*') &&
(myCurrentParagraph[1] == ' ')) {
myCurrentParagraph.erase(0, 2);
myModelReader.insertEndOfSectionParagraph();
myModelReader.beginContentsParagraph();
myModelReader.addContentsData(myCurrentParagraph);
myModelReader.endContentsParagraph();
myModelReader.beginParagraph();
myModelReader.addControl(SECTION_TITLE, true);
myModelReader.addData(myCurrentParagraph);
myModelReader.endParagraph();
} else if (myCurrentParagraph.substr(0, 4) != END_OF_TEXT) {
myModelReader.beginParagraph();
myModelReader.addControl(SUBTITLE, true);
myModelReader.addData(myCurrentParagraph);
myModelReader.endParagraph();
}
myCurrentParagraph.erase();
}
}
bool PPLBookReader::readDocument(ZLInputStream &stream) {
if (!stream.open()) {
return false;
}
myModelReader.setMainTextModel();
myModelReader.pushKind(REGULAR);
myCurrentParagraph.erase();
myEmptyLineCounter = 0;
// "PPL\r\n"
stream.seek(5, false);
std::size_t size;
do {
size = stream.read(myBuffer, BUFFER_SIZE);
myBuffer[size] = '\0';
const char *start = myBuffer;
const char *end = myBuffer + size;
const char *eol;
do {
eol = std::strchr(start, '\n');
if (eol != 0) {
if (start < eol) {
myConverter->convert(myCurrentParagraph, start, eol);
}
addParagraph();
start = eol + 1;
} else {
if (start < end) {
myConverter->convert(myCurrentParagraph, start, end);
}
}
} while (eol != 0);
} while (size == BUFFER_SIZE);
addParagraph();
stream.close();
return true;
}
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