/*

Copyright 2011-2012 Heikki Holstila <heikki.holstila@gmail.com>

This file is part of FingerTerm.

FingerTerm 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.

FingerTerm 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 FingerTerm. If not, see <http://www.gnu.org/licenses/>.

*/

#include <QtCore>

#include <QDebug>

#include "keyloader.h"

#include "util.h"

KeyLoader::KeyLoader(QObject *parent) :

QObject(parent),

iVkbRows(0),

iVkbColumns(0),

iUtil(0)

{

}

KeyLoader::~KeyLoader()

{

}

bool KeyLoader::loadLayout(QString layout)

{

bool ret = false;

if(layout.isEmpty() || !iUtil)

return false;

if (layout.at(0)==':') { // load from resources

QResource res(layout);

QByteArray resArr( reinterpret_cast<const char*>(res.data()) );

QBuffer resBuf( &resArr );

ret = loadLayoutInternal(resBuf);

}

else { // load from file

QFile f(iUtil->configPath() + "/" + layout + ".layout");

if (!f.exists()) // fallback to installation directory

f.setFileName(QStringLiteral(DEPLOYMENT_PATH) + "/data/" + layout + ".layout");

ret = loadLayoutInternal(f);

}

return ret;

}

bool KeyLoader::loadLayoutInternal(QIODevice &from)

{

iKeyData.clear();

bool ret = true;

iVkbRows = 0;

iVkbColumns = 0;

bool lastLineHadKey = false;

if( !from.open(QIODevice::ReadOnly | QIODevice::Text) )

return false;

QList<KeyData> keyRow;

while(!from.atEnd()) {

QString line = QString::fromUtf8(from.readLine()).simplified();

if(line.length()>=2 && line.at(0)!=';' && line.at(0)=='[' && line.at(line.length()-1)==']')

{

KeyData key;

key.label = "";

key.code = 0;

key.label_alt = "";

key.code_alt = 0;

key.isModifier = false;

line.replace("\\\\", "\\x5C");

line.replace("\" \"", "\\x20");

line.replace(" ", "");

line.replace("\"[\"", "\\x5B");

line.replace("\"]\"", "\\x5D");

line.replace("\",\"", "\\x2C");

line.replace("\\\"", "\\x22");

line.replace("\"", "");

key.width = line.count('[');

line.replace("[", "");

line.replace("]", "");

line.replace("\\x20", " ");

line.replace("\\x22", "\"");

line.replace("\\x5B", "[");

line.replace("\\x5D", "]");

line.replace("\\x5C", "\\");

QStringList parts = line.split(",", QString::KeepEmptyParts);

if(parts.count()>=2) {

bool ok = true;

key.label = parts.at(0);

key.label.replace("\\x2C",",");

parts[1].replace("0x","");

key.code = parts.at(1).toInt(&ok,16);

if(!ok) {

ret = false;

break;

}

if(key.code==Qt::AltModifier || key.code==Qt::ControlModifier || key.code==Qt::ShiftModifier)

key.isModifier = true;

if(parts.count()>=4 && !key.isModifier) {

key.label_alt = parts.at(2);

key.label_alt.replace("\\x2C",",");

parts[3].replace("0x","");

key.code_alt = parts.at(3).toInt(&ok,16);

if(!ok) {

ret = false;

break;

}

}

}

lastLineHadKey = true;

cleanUpKey(key);

keyRow.append(key);

}

else if(line.length()==0 && lastLineHadKey) {

if(keyRow.count() > iVkbColumns) {

iVkbColumns = keyRow.count();

}

iKeyData.append(keyRow);

keyRow.clear();

lastLineHadKey = false;

}

else {

lastLineHadKey = false;

}

}

if(keyRow.count() > 0)

iKeyData.append(keyRow);

iVkbRows = iKeyData.count();

foreach(QList<KeyData> r, iKeyData) {

if(r.count() > iVkbColumns)

iVkbColumns = r.count();

}

from.close();

if (iVkbColumns <= 0 || iVkbRows <= 0)

ret = false;

if (!ret)

iKeyData.clear();

return ret;

}

QVariantList KeyLoader::keyAt(int row, int col)

{

QVariantList ret;

ret.append(""); //label

ret.append(0); //code

ret.append(""); //label_alt

ret.append(0); //code_alt

ret.append(0); //width

ret.append(false); //isModifier

if(iKeyData.count() <= row)

return ret;

if(iKeyData.at(row).count() <= col)

return ret;

ret[0] = iKeyData.at(row).at(col).label;

ret[1] = iKeyData.at(row).at(col).code;

ret[2] = iKeyData.at(row).at(col).label_alt;

ret[3] = iKeyData.at(row).at(col).code_alt;

ret[4] = iKeyData.at(row).at(col).width;

ret[5] = iKeyData.at(row).at(col).isModifier;

return ret;

}

const QStringList KeyLoader::availableLayouts()

{

if (!iUtil)

return QStringList();

QDir confDir(iUtil->configPath());

QStringList filter("*.layout");

QStringList results = confDir.entryList(filter, QDir::Files|QDir::Readable, QDir::Name);

QStringList ret;

foreach(QString s, results) {

ret << s.left(s.lastIndexOf('.'));

}

// Add also layouts from installation path.

QDir dataDir(QStringLiteral(DEPLOYMENT_PATH) + "/data");

results = dataDir.entryList(filter, QDir::Files|QDir::Readable, QDir::Name);

foreach(QString s, results) {

QString layout = s.left(s.lastIndexOf('.'));

if (!ret.contains(layout))

ret << layout;

}

return ret;

}

void KeyLoader::cleanUpKey(KeyData &key)

{

// make sure that a key does not try to use some (currently) unsupported feature...

// if the label is an image or a modifier, we do not support an alternative label

if ((key.label.startsWith(':') && key.label.length()>1) || key.isModifier) {

key.label_alt = "";

key.code_alt = 0;

}

// if the alternative label is an image (and the default one was not), use it as the (only) default

if (key.label_alt.startsWith(':') && key.label_alt.length()>1) {

key.label = key.label_alt;

key.code = key.code_alt;

key.label_alt = "";

key.code_alt = 0;

}

// alphabet letters can't have an alternative, they just switch between lower and upper case

if (key.label.length()==1 && key.label.at(0).isLetter()) {

key.label_alt = "";

key.code_alt = 0;

}

// ... also, can't have alphabet letters as an alternative label

if (key.label_alt.length()==1 && key.label_alt.at(0).isLetter()) {

key.label_alt = "";

key.code_alt = 0;

}

}