parser.cpp
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/* This file is part of QJson
*
* Copyright (C) 2008 Flavio Castelli <flavio.castelli@gmail.com>
* Copyright (C) 2016 Anton Kudryavtsev <a.kudryavtsev@netris.ru>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "parser.h"
#include "parser_p.h"
#include "json_parser.hh"
#include "json_scanner.h"
#include <QtCore/QBuffer>
#include <QtCore/QStringList>
#include <QtCore/QTextStream>
#include <QtCore/QDebug>
using namespace QJson;
ParserPrivate::ParserPrivate() :
m_scanner(0),
m_specialNumbersAllowed(false)
{
reset();
}
ParserPrivate::~ParserPrivate()
{
if (m_scanner)
delete m_scanner;
}
QVariant ParserPrivate::parse(QIODevice* io, bool* ok)
{
m_scanner = new JSonScanner (io);
m_scanner->allowSpecialNumbers(m_specialNumbersAllowed);
yy::json_parser parser(this);
parser.parse();
delete m_scanner;
m_scanner = 0;
if (ok != 0)
*ok = !m_error;
io->close();
return m_result;
}
void ParserPrivate::setError(const QString &errorMsg, int errorLine) {
m_error = true;
m_errorMsg = errorMsg;
m_errorLine = errorLine;
}
void ParserPrivate::reset()
{
m_error = false;
m_errorLine = 0;
m_errorMsg.clear();
if (m_scanner) {
delete m_scanner;
m_scanner = 0;
}
}
Parser::Parser() :
d(new ParserPrivate)
{
}
Parser::~Parser()
{
delete d;
}
QVariant Parser::parse(QIODevice* io, bool* ok)
{
d->reset();
if (!io->isOpen()) {
if (!io->open(QIODevice::ReadOnly)) {
if (ok != 0)
*ok = false;
qCritical ("Error opening device");
return QVariant();
}
}
if (!io->isReadable()) {
if (ok != 0)
*ok = false;
qCritical ("Device is not readable");
io->close();
return QVariant();
}
if (io->atEnd()) {
if (ok != 0)
*ok = false;
d->setError(QLatin1String("No data"), 0);
io->close();
return QVariant();
}
QByteArray buffer = io->readAll();
return parse(buffer, ok);
}
QVariant Parser::parse(const QByteArray& jsonString, bool* ok)
{
d->reset();
QBuffer buffer;
buffer.open(QBuffer::ReadWrite | QBuffer::Text);
buffer.write(jsonString);
buffer.seek(0);
return d->parse(&buffer, ok);
}
QString Parser::errorString() const
{
return d->m_errorMsg;
}
int Parser::errorLine() const
{
return d->m_errorLine;
}
void QJson::Parser::allowSpecialNumbers(bool allowSpecialNumbers) {
d->m_specialNumbersAllowed = allowSpecialNumbers;
}
bool Parser::specialNumbersAllowed() const {
return d->m_specialNumbersAllowed;
}