template.cpp

/*
  This file is part of the Cutelee template system.
 
  Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either version
  2.1 of the Licence, or (at your option) any later version.
 
  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.  If not, see <http://www.gnu.org/licenses/>.
 
*/
 
#include "template.h"
#include "template_p.h"
 
#include "context.h"
#include "engine.h"
#include "exception.h"
#include "lexer_p.h"
#include "parser.h"
#include "rendercontext.h"
 
#include <QtCore/QLoggingCategory>
 
Q_LOGGING_CATEGORY(CUTELEE_TEMPLATE, "cutelee.template")
 
using namespace Cutelee;
 
NodeList TemplatePrivate::compileString(const QString &str)
{
  Q_Q(TemplateImpl);
  Lexer l(str);
  Parser p(l.tokenize(m_smartTrim ? Lexer::SmartTrim : Lexer::NoSmartTrim), q);
 
  return p.parse(q);
}
 
TemplateImpl::TemplateImpl(Engine const *engine, QObject *parent)
    : QObject(parent), d_ptr(new TemplatePrivate(engine, false, this))
{
}
 
TemplateImpl::TemplateImpl(Engine const *engine, bool smartTrim,
                           QObject *parent)
    : QObject(parent), d_ptr(new TemplatePrivate(engine, smartTrim, this))
{
}
 
TemplateImpl::~TemplateImpl() { delete d_ptr; }
 
void TemplateImpl::setContent(const QString &templateString)
{
  Q_D(Template);
  if (templateString.isEmpty())
    return;
 
  try {
    d->m_nodeList = d->compileString(templateString);
    d->setError(NoError, QString());
  } catch (Cutelee::Exception &e) {
    qCWarning(CUTELEE_TEMPLATE) << e.what();
    d->setError(e.errorCode(), e.what());
  }
}
 
QString TemplateImpl::render(Context *c) const
{
  QString output;
  QTextStream textStream(&output);
  OutputStream outputStream(&textStream);
  render(&outputStream, c);
  return output;
}
 
OutputStream *TemplateImpl::render(OutputStream *stream, Context *c) const
{
  Q_D(const Template);
 
  c->clearExternalMedia();
 
  c->renderContext()->push();
 
  try {
    d->m_nodeList.render(stream, c);
    d->setError(NoError, QString());
  } catch (Cutelee::Exception &e) {
    qCWarning(CUTELEE_TEMPLATE) << e.what();
    d->setError(e.errorCode(), e.what());
  }
 
  c->renderContext()->pop();
 
  return stream;
}
 
NodeList TemplateImpl::nodeList() const
{
  Q_D(const Template);
  return d->m_nodeList;
}
 
void TemplateImpl::setNodeList(const NodeList &list)
{
  Q_D(Template);
  d->m_nodeList = list;
}
 
void TemplatePrivate::setError(Error type, const QString &message) const
{
  m_error = type;
  m_errorString = message;
}
 
Error TemplateImpl::error() const
{
  Q_D(const Template);
  return d->m_error;
}
 
QString TemplateImpl::errorString() const
{
  Q_D(const Template);
  return d->m_errorString;
}
 
Engine const *TemplateImpl::engine() const
{
  Q_D(const Template);
  return d->m_engine.data();
}