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qBittorrent/src/misc.h
Christophe Dumez 89330e11de - Priorities are now remembered across restart (bugfix)
2009-01-05 21:19:55 +00:00

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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* 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.
*
* Contact : chris@qbittorrent.org
*/
#ifndef MISC_H
#define MISC_H
#include <sstream>
#include <stdexcept>
#include <QObject>
#include <QString>
#include <QByteArray>
#include <QFileInfo>
#include <QDir>
#include <QList>
#include <QPair>
#include <QThread>
#include <libtorrent/torrent_info.hpp>
using namespace libtorrent;
/* Miscellaneaous functions that can be useful */
class misc : public QObject{
Q_OBJECT
public:
// Convert any type of variable to C++ String
// convert=true will convert -1 to 0
template <class T> static std::string toString(const T& x, bool convert=false) {
std::ostringstream o;
if(!(o<<x)) {
throw std::runtime_error("::toString()");
}
if(o.str() == "-1" && convert)
return "0";
return o.str();
}
template <class T> static QString toQString(const T& x, bool convert=false) {
std::ostringstream o;
if(!(o<<x)) {
throw std::runtime_error("::toString()");
}
if(o.str() == "-1" && convert)
return QString::fromUtf8("0");
return QString::fromUtf8(o.str().c_str());
}
template <class T> static QByteArray toQByteArray(const T& x, bool convert=false) {
std::ostringstream o;
if(!(o<<x)) {
throw std::runtime_error("::toString()");
}
if(o.str() == "-1" && convert)
return "0";
return QByteArray(o.str().c_str());
}
// Convert C++ string to any type of variable
template <class T> static T fromString(const std::string& s) {
T x;
std::istringstream i(s);
if(!(i>>x)) {
throw std::runtime_error("::fromString()");
}
return x;
}
// template <class T> static T fromQString::fromUtf8(const QString& s) {
// T x;
// std::istringstream i((const char*)s.toUtf8());
// if(!(i>>x)) {
// throw std::runtime_error("::fromString()");
// }
// return x;
// }
//
// template <class T> static T fromQByteArray(const QByteArray& s) {
// T x;
// std::istringstream i((const char*)s);
// if(!(i>>x)) {
// throw std::runtime_error("::fromString()");
// }
// return x;
// }
// return best userfriendly storage unit (B, KiB, MiB, GiB, TiB)
// use Binary prefix standards from IEC 60027-2
// see http://en.wikipedia.org/wiki/Kilobyte
// value must be given in bytes
static QString friendlyUnit(float val) {
if(val < 0) {
return tr("Unknown", "Unknown (size)");
}
const QString units[4] = {tr("B", "bytes"), tr("KiB", "kibibytes (1024 bytes)"), tr("MiB", "mebibytes (1024 kibibytes)"), tr("GiB", "gibibytes (1024 mibibytes)")};
for(unsigned int i=0; i<5; ++i) {
if (val < 1024.) {
return QString(QByteArray::number(val, 'f', 1)) + units[i];
}
val /= 1024.;
}
return QString(QByteArray::number(val, 'f', 1)) + tr("TiB", "tebibytes (1024 gibibytes)");
}
static bool isPreviewable(QString extension){
extension = extension.toUpper();
if(extension == "AVI") return true;
if(extension == "MP3") return true;
if(extension == "OGG") return true;
if(extension == "OGM") return true;
if(extension == "WMV") return true;
if(extension == "WMA") return true;
if(extension == "MPEG") return true;
if(extension == "MPG") return true;
if(extension == "ASF") return true;
if(extension == "QT") return true;
if(extension == "RM") return true;
if(extension == "RMVB") return true;
if(extension == "RMV") return true;
if(extension == "SWF") return true;
if(extension == "FLV") return true;
if(extension == "WAV") return true;
if(extension == "MOV") return true;
if(extension == "VOB") return true;
if(extension == "MID") return true;
if(extension == "AC3") return true;
if(extension == "MP4") return true;
if(extension == "MP2") return true;
if(extension == "AVI") return true;
if(extension == "FLAC") return true;
if(extension == "AU") return true;
if(extension == "MPE") return true;
if(extension == "MOV") return true;
if(extension == "MKV") return true;
if(extension == "AIF") return true;
if(extension == "AIFF") return true;
if(extension == "AIFC") return true;
if(extension == "RA") return true;
if(extension == "RAM") return true;
if(extension == "M4P") return true;
if(extension == "M4A") return true;
if(extension == "3GP") return true;
if(extension == "AAC") return true;
if(extension == "SWA") return true;
if(extension == "MPC") return true;
if(extension == "MPP") return true;
return false;
}
// return qBittorrent config path
static QString qBittorrentPath() {
QString qBtPath = QDir::homePath()+QDir::separator()+QString::fromUtf8(".qbittorrent") + QDir::separator();
// Create dir if it does not exist
if(!QFile::exists(qBtPath)){
QDir dir(qBtPath);
dir.mkpath(qBtPath);
}
return qBtPath;
}
// Not used anymore because it is not safe
// static bool removePath(QString path) {
// qDebug((QString::fromUtf8("file to delete:") + path).toUtf8());
// if(!QFile::remove(path)) {
// // Probably a folder
// QDir current_dir(path);
// if(current_dir.exists()) {
// //Remove sub items
// QStringList subItems = current_dir.entryList();
// QString item;
// foreach(item, subItems) {
// if(item != QString::fromUtf8(".") && item != QString::fromUtf8("..")) {
// qDebug("-> Removing "+(path+QDir::separator()+item).toUtf8());
// removePath(path+QDir::separator()+item);
// }
// }
// // Remove empty folder
// if(current_dir.rmdir(path)) {
// return true;
// }else{
// return false;
// }
// }else{
// return false;
// }
// }
// return true;
// }
static QString findFileInDir(QString dir_path, QString fileName) {
QDir dir(dir_path);
if(dir.exists(fileName)) {
return dir.filePath(fileName);
}
QStringList subDirs = dir.entryList(QDir::Dirs);
QString subdir_name;
foreach(subdir_name, subDirs) {
QString result = findFileInDir(dir.path()+QDir::separator()+subdir_name, fileName);
if(!result.isNull()) {
return result;
}
}
return QString();
}
static void fixTrackersTiers(std::vector<announce_entry> trackers) {
unsigned int nbTrackers = trackers.size();
for(unsigned int i=0; i<nbTrackers; ++i) {
trackers[i].tier = i;
}
}
// Insertion sort, used instead of bubble sort because it is
// approx. 5 times faster.
template <class T> static void insertSort(QList<QPair<int, T> > &list, const QPair<int, T>& value, Qt::SortOrder sortOrder) {
int i = 0;
if(sortOrder == Qt::AscendingOrder) {
while(i < list.size() and value.second > list.at(i).second) {
++i;
}
}else{
while(i < list.size() and value.second < list.at(i).second) {
++i;
}
}
list.insert(i, value);
}
template <class T> static void insertSort2(QList<QPair<int, T> > &list, const QPair<int, T>& value, Qt::SortOrder sortOrder=Qt::AscendingOrder) {
int i = 0;
if(sortOrder == Qt::AscendingOrder) {
while(i < list.size() and value.first > list.at(i).first) {
++i;
}
}else{
while(i < list.size() and value.first < list.at(i).first) {
++i;
}
}
list.insert(i, value);
}
// Can't use template class for QString because >,< use unicode code for sorting
// which is not what a human would expect when sorting strings.
static void insertSortString(QList<QPair<int, QString> > &list, QPair<int, QString> value, Qt::SortOrder sortOrder) {
int i = 0;
if(sortOrder == Qt::AscendingOrder) {
while(i < list.size() and QString::localeAwareCompare(value.second, list.at(i).second) > 0) {
++i;
}
}else{
while(i < list.size() and QString::localeAwareCompare(value.second, list.at(i).second) < 0) {
++i;
}
}
list.insert(i, value);
}
static float getPluginVersion(QString filePath) {
QFile plugin(filePath);
if(!plugin.exists()){
qDebug("%s plugin does not exist, returning 0.0", filePath.toUtf8().data());
return 0.0;
}
if(!plugin.open(QIODevice::ReadOnly | QIODevice::Text)){
return 0.0;
}
float version = 0.0;
while (!plugin.atEnd()){
QByteArray line = plugin.readLine();
if(line.startsWith("#VERSION: ")){
line = line.split(' ').last();
line.replace("\n", "");
version = line.toFloat();
qDebug("plugin %s version: %.2f", filePath.toUtf8().data(), version);
break;
}
}
return version;
}
// Take a number of seconds and return an user-friendly
// time duration like "1d 2h 10m".
static QString userFriendlyDuration(qlonglong seconds) {
if(seconds < 0) {
return QString::fromUtf8("∞");
}
if(seconds < 60) {
return tr("< 1m", "< 1 minute");
}
int minutes = seconds / 60;
if(minutes < 60) {
return tr("%1m","e.g: 10minutes").arg(QString::QString::fromUtf8(misc::toString(minutes).c_str()));
}
int hours = minutes / 60;
minutes = minutes - hours*60;
if(hours < 24) {
return tr("%1h%2m", "e.g: 3hours 5minutes").arg(QString::fromUtf8(misc::toString(hours).c_str())).arg(QString::fromUtf8(misc::toString(minutes).c_str()));
}
int days = hours / 24;
hours = hours - days * 24;
if(days < 100) {
return tr("%1d%2h%3m", "e.g: 2days 10hours 2minutes").arg(QString::fromUtf8(misc::toString(days).c_str())).arg(QString::fromUtf8(misc::toString(hours).c_str())).arg(QString::fromUtf8(misc::toString(minutes).c_str()));
}
return QString::fromUtf8("∞");
}
};
// Trick to get a portable sleep() function
class SleeperThread : public QThread{
public:
static void msleep(unsigned long msecs)
{
QThread::msleep(msecs);
}
};
#endif
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