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qtermwidget-packaging/lib/Filter.cpp

558 lines
14 KiB

/*
Copyright 2007-2008 by Robert Knight <robertknight@gmail.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.
*/
// Own
#include "Filter.h"
// System
#include <iostream>
// Qt
#include <QAction>
#include <QApplication>
#include <QClipboard>
#include <QString>
#include <QTextStream>
#include <QSharedData>
#include <QFile>
#include <QDesktopServices>
#include <QUrl>
// KDE
//#include <KLocale>
//#include <KRun>
// Konsole
#include "TerminalCharacterDecoder.h"
#include "konsole_wcwidth.h"
using namespace Konsole;
FilterChain::~FilterChain()
{
QMutableListIterator<Filter*> iter(*this);
while ( iter.hasNext() )
{
Filter* filter = iter.next();
iter.remove();
delete filter;
}
}
void FilterChain::addFilter(Filter* filter)
{
append(filter);
}
void FilterChain::removeFilter(Filter* filter)
{
removeAll(filter);
}
bool FilterChain::containsFilter(Filter* filter)
{
return contains(filter);
}
void FilterChain::reset()
{
QListIterator<Filter*> iter(*this);
while (iter.hasNext())
iter.next()->reset();
}
void FilterChain::setBuffer(const QString* buffer , const QList<int>* linePositions)
{
QListIterator<Filter*> iter(*this);
while (iter.hasNext())
iter.next()->setBuffer(buffer,linePositions);
}
void FilterChain::process()
{
QListIterator<Filter*> iter(*this);
while (iter.hasNext())
iter.next()->process();
}
void FilterChain::clear()
{
QList<Filter*>::clear();
}
Filter::HotSpot* FilterChain::hotSpotAt(int line , int column) const
{
QListIterator<Filter*> iter(*this);
while (iter.hasNext())
{
Filter* filter = iter.next();
Filter::HotSpot* spot = filter->hotSpotAt(line,column);
if ( spot != 0 )
{
return spot;
}
}
return 0;
}
QList<Filter::HotSpot*> FilterChain::hotSpots() const
{
QList<Filter::HotSpot*> list;
QListIterator<Filter*> iter(*this);
while (iter.hasNext())
{
Filter* filter = iter.next();
list << filter->hotSpots();
}
return list;
}
//QList<Filter::HotSpot*> FilterChain::hotSpotsAtLine(int line) const;
TerminalImageFilterChain::TerminalImageFilterChain()
: _buffer(0)
, _linePositions(0)
{
}
TerminalImageFilterChain::~TerminalImageFilterChain()
{
delete _buffer;
delete _linePositions;
}
void TerminalImageFilterChain::setImage(const Character* const image , int lines , int columns, const QVector<LineProperty>& lineProperties)
{
if (empty())
return;
// reset all filters and hotspots
reset();
PlainTextDecoder decoder;
decoder.setTrailingWhitespace(false);
// setup new shared buffers for the filters to process on
QString* newBuffer = new QString();
QList<int>* newLinePositions = new QList<int>();
setBuffer( newBuffer , newLinePositions );
// free the old buffers
delete _buffer;
delete _linePositions;
_buffer = newBuffer;
_linePositions = newLinePositions;
QTextStream lineStream(_buffer);
decoder.begin(&lineStream);
for (int i=0 ; i < lines ; i++)
{
_linePositions->append(_buffer->length());
decoder.decodeLine(image + i*columns,columns,LINE_DEFAULT);
// pretend that each line ends with a newline character.
// this prevents a link that occurs at the end of one line
// being treated as part of a link that occurs at the start of the next line
//
// the downside is that links which are spread over more than one line are not
// highlighted.
//
// TODO - Use the "line wrapped" attribute associated with lines in a
// terminal image to avoid adding this imaginary character for wrapped
// lines
if ( !(lineProperties.value(i,LINE_DEFAULT) & LINE_WRAPPED) )
lineStream << QChar('\n');
}
decoder.end();
}
Filter::Filter() :
_linePositions(0),
_buffer(0)
{
}
Filter::~Filter()
{
QListIterator<HotSpot*> iter(_hotspotList);
while (iter.hasNext())
{
delete iter.next();
}
}
void Filter::reset()
{
_hotspots.clear();
_hotspotList.clear();
}
void Filter::setBuffer(const QString* buffer , const QList<int>* linePositions)
{
_buffer = buffer;
_linePositions = linePositions;
}
void Filter::getLineColumn(int position , int& startLine , int& startColumn)
{
Q_ASSERT( _linePositions );
Q_ASSERT( _buffer );
for (int i = 0 ; i < _linePositions->count() ; i++)
{
int nextLine = 0;
if ( i == _linePositions->count()-1 )
nextLine = _buffer->length() + 1;
else
nextLine = _linePositions->value(i+1);
if ( _linePositions->value(i) <= position && position < nextLine )
{
startLine = i;
startColumn = string_width(buffer()->mid(_linePositions->value(i),position - _linePositions->value(i)));
return;
}
}
}
/*void Filter::addLine(const QString& text)
{
_linePositions << _buffer.length();
_buffer.append(text);
}*/
const QString* Filter::buffer()
{
return _buffer;
}
Filter::HotSpot::~HotSpot()
{
}
void Filter::addHotSpot(HotSpot* spot)
{
_hotspotList << spot;
for (int line = spot->startLine() ; line <= spot->endLine() ; line++)
{
_hotspots.insert(line,spot);
}
}
QList<Filter::HotSpot*> Filter::hotSpots() const
{
return _hotspotList;
}
QList<Filter::HotSpot*> Filter::hotSpotsAtLine(int line) const
{
return _hotspots.values(line);
}
Filter::HotSpot* Filter::hotSpotAt(int line , int column) const
{
QListIterator<HotSpot*> spotIter(_hotspots.values(line));
while (spotIter.hasNext())
{
HotSpot* spot = spotIter.next();
if ( spot->startLine() == line && spot->startColumn() > column )
continue;
if ( spot->endLine() == line && spot->endColumn() < column )
continue;
return spot;
}
return 0;
}
Filter::HotSpot::HotSpot(int startLine , int startColumn , int endLine , int endColumn)
: _startLine(startLine)
, _startColumn(startColumn)
, _endLine(endLine)
, _endColumn(endColumn)
, _type(NotSpecified)
{
}
QString Filter::HotSpot::tooltip() const
{
return QString();
}
QList<QAction*> Filter::HotSpot::actions()
{
return QList<QAction*>();
}
int Filter::HotSpot::startLine() const
{
return _startLine;
}
int Filter::HotSpot::endLine() const
{
return _endLine;
}
int Filter::HotSpot::startColumn() const
{
return _startColumn;
}
int Filter::HotSpot::endColumn() const
{
return _endColumn;
}
Filter::HotSpot::Type Filter::HotSpot::type() const
{
return _type;
}
void Filter::HotSpot::setType(Type type)
{
_type = type;
}
RegExpFilter::RegExpFilter()
{
}
RegExpFilter::HotSpot::HotSpot(int startLine,int startColumn,int endLine,int endColumn)
: Filter::HotSpot(startLine,startColumn,endLine,endColumn)
{
setType(Marker);
}
void RegExpFilter::HotSpot::activate(const QString&)
{
}
void RegExpFilter::HotSpot::setCapturedTexts(const QStringList& texts)
{
_capturedTexts = texts;
}
QStringList RegExpFilter::HotSpot::capturedTexts() const
{
return _capturedTexts;
}
void RegExpFilter::setRegExp(const QRegExp& regExp)
{
_searchText = regExp;
}
QRegExp RegExpFilter::regExp() const
{
return _searchText;
}
/*void RegExpFilter::reset(int)
{
_buffer = QString();
}*/
void RegExpFilter::process()
{
int pos = 0;
const QString* text = buffer();
Q_ASSERT( text );
// ignore any regular expressions which match an empty string.
// otherwise the while loop below will run indefinitely
static const QString emptyString("");
if ( _searchText.exactMatch(emptyString) )
return;
while(pos >= 0)
{
pos = _searchText.indexIn(*text,pos);
if ( pos >= 0 )
{
int startLine = 0;
int endLine = 0;
int startColumn = 0;
int endColumn = 0;
getLineColumn(pos,startLine,startColumn);
getLineColumn(pos + _searchText.matchedLength(),endLine,endColumn);
RegExpFilter::HotSpot* spot = newHotSpot(startLine,startColumn,
endLine,endColumn);
spot->setCapturedTexts(_searchText.capturedTexts());
addHotSpot( spot );
pos += _searchText.matchedLength();
// if matchedLength == 0, the program will get stuck in an infinite loop
if ( _searchText.matchedLength() == 0 )
pos = -1;
}
}
}
RegExpFilter::HotSpot* RegExpFilter::newHotSpot(int startLine,int startColumn,
int endLine,int endColumn)
{
return new RegExpFilter::HotSpot(startLine,startColumn,
endLine,endColumn);
}
RegExpFilter::HotSpot* UrlFilter::newHotSpot(int startLine,int startColumn,int endLine,
int endColumn)
{
HotSpot *spot = new UrlFilter::HotSpot(startLine,startColumn,
endLine,endColumn);
connect(spot->getUrlObject(), SIGNAL(activated(QUrl)), this, SIGNAL(activated(QUrl)));
return spot;
}
UrlFilter::HotSpot::HotSpot(int startLine,int startColumn,int endLine,int endColumn)
: RegExpFilter::HotSpot(startLine,startColumn,endLine,endColumn)
, _urlObject(new FilterObject(this))
{
setType(Link);
}
QString UrlFilter::HotSpot::tooltip() const
{
QString url = capturedTexts().first();
const UrlType kind = urlType();
if ( kind == StandardUrl )
return QString();
else if ( kind == Email )
return QString();
else
return QString();
}
UrlFilter::HotSpot::UrlType UrlFilter::HotSpot::urlType() const
{
QString url = capturedTexts().first();
if ( FullUrlRegExp.exactMatch(url) )
return StandardUrl;
else if ( EmailAddressRegExp.exactMatch(url) )
return Email;
else
return Unknown;
}
void UrlFilter::HotSpot::activate(const QString& actionName)
{
QString url = capturedTexts().first();
const UrlType kind = urlType();
if ( actionName == "copy-action" )
{
QApplication::clipboard()->setText(url);
return;
}
if ( actionName.isEmpty() || actionName == "open-action" )
{
if ( kind == StandardUrl )
{
// if the URL path does not include the protocol ( eg. "www.kde.org" ) then
// prepend http:// ( eg. "www.kde.org" --> "http://www.kde.org" )
if (!url.contains("://"))
{
url.prepend("http://");
}
}
else if ( kind == Email )
{
url.prepend("mailto:");
}
_urlObject->emitActivated(url);
}
}
// Note: Altering these regular expressions can have a major effect on the performance of the filters
// used for finding URLs in the text, especially if they are very general and could match very long
// pieces of text.
// Please be careful when altering them.
//regexp matches:
// full url:
// protocolname:// or www. followed by anything other than whitespaces, <, >, ' or ", and ends before whitespaces, <, >, ', ", ], !, comma and dot
const QRegExp UrlFilter::FullUrlRegExp("(www\\.(?!\\.)|[a-z][a-z0-9+.-]*://)[^\\s<>'\"]+[^!,\\.\\s<>'\"\\]]");
// email address:
// [word chars, dots or dashes]@[word chars, dots or dashes].[word chars]
const QRegExp UrlFilter::EmailAddressRegExp("\\b(\\w|\\.|-)+@(\\w|\\.|-)+\\.\\w+\\b");
// matches full url or email address
const QRegExp UrlFilter::CompleteUrlRegExp('('+FullUrlRegExp.pattern()+'|'+
EmailAddressRegExp.pattern()+')');
UrlFilter::UrlFilter()
{
setRegExp( CompleteUrlRegExp );
}
UrlFilter::HotSpot::~HotSpot()
{
delete _urlObject;
}
void FilterObject::emitActivated(const QUrl& url)
{
emit activated(url);
}
void FilterObject::activated()
{
_filter->activate(sender()->objectName());
}
FilterObject* UrlFilter::HotSpot::getUrlObject() const
{
return _urlObject;
}
QList<QAction*> UrlFilter::HotSpot::actions()
{
QList<QAction*> list;
const UrlType kind = urlType();
QAction* openAction = new QAction(_urlObject);
QAction* copyAction = new QAction(_urlObject);;
Q_ASSERT( kind == StandardUrl || kind == Email );
if ( kind == StandardUrl )
{
openAction->setText(QObject::tr("Open Link"));
copyAction->setText(QObject::tr("Copy Link Address"));
}
else if ( kind == Email )
{
openAction->setText(QObject::tr("Send Email To..."));
copyAction->setText(QObject::tr("Copy Email Address"));
}
// object names are set here so that the hotspot performs the
// correct action when activated() is called with the triggered
// action passed as a parameter.
openAction->setObjectName( QLatin1String("open-action" ));
copyAction->setObjectName( QLatin1String("copy-action" ));
QObject::connect( openAction , SIGNAL(triggered()) , _urlObject , SLOT(activated()) );
QObject::connect( copyAction , SIGNAL(triggered()) , _urlObject , SLOT(activated()) );
list << openAction;
list << copyAction;
return list;
}
//#include "Filter.moc"