- Moved everything to trunk to create a stable branch

src/misc.h

@@ -0,0 +1,190 @@
+/*
+ * 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 <QDir>
+#include <QList>
+#include <QPair>
+#include <QThread>
+
+#define MAX_CHAR_TMP 128
+
+/*  Miscellaneaous functions that can be useful */
+class misc : public QObject{
+ Q_OBJECT
+
+  public:
+    // Convert any type of variable to C++ String
+    template <class T> static std::string toString(const T& x){
+      std::ostringstream o;
+      if(!(o<<x)) {
+        throw std::runtime_error("::toString()");
+      }
+      return o.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;
+    }
+
+    // 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
+    template <class T> static QString friendlyUnit(const T& value){
+      char tmp[MAX_CHAR_TMP];
+      float val = value;
+      if(val <= 0){
+        return QString(tr("Unknown", "Unknown (size)"));
+      }
+      QString units[] = {tr("B", "bytes"), tr("KiB", "kibibytes (1024 bytes)"), tr("MiB", "mebibytes (1024 kibibytes)"), tr("GiB", "gibibytes (1024 mibibytes)")};
+      for(int i=0; i<5; ++i){
+        if (val < 1024.){
+          snprintf(tmp, MAX_CHAR_TMP, "%.1f", (float)val);
+          return QString(tmp) + " " + units[i];
+        }
+        val /= 1024.;
+      }
+      snprintf(tmp, MAX_CHAR_TMP, "%.1f", (float)val);
+      return  QString(tmp) + " " + tr("TiB", "tebibytes (1024 gibibytes)");
+    }
+
+    // return qBittorrent config path
+    static QString qBittorrentPath() {
+      QString qBtPath = QDir::homePath();
+      if(qBtPath.isNull()){
+        return QString();
+      }
+      if(qBtPath[qBtPath.length()-1] == QDir::separator()){
+        qBtPath = qBtPath + ".qbittorrent" + QDir::separator();
+      }else{
+        qBtPath = qBtPath + QDir::separator() + ".qbittorrent" + QDir::separator();
+      }
+      // Create dir if it does not exist
+      QDir dir(qBtPath);
+      if(!dir.exists()){
+        dir.mkpath(qBtPath);
+      }
+      return qBtPath;
+    }
+
+    // Function called by curl to write the data to the file
+    static int my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream){
+      return fwrite(buffer, size, nmemb, (FILE*)stream);
+    }
+
+    static QString findFileInDir(const QString& dir_path, const 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();
+    }
+
+    // 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);
+    }
+
+    // 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);
+    }
+
+    // Take a number of seconds and return an user-friendly
+    // time duration like "1d 2h 10m".
+    static QString userFriendlyDuration(const long int seconds){
+      if(seconds <= 0){
+        return QString::QString(tr("Unknown"));
+      }
+      if(seconds < 60){
+        return QString::QString("< 1"+tr("m", "minutes"));
+      }
+      int minutes = seconds / 60;
+      if(minutes < 60){
+        return QString::QString(misc::toString(minutes).c_str())+tr("m", "minutes");
+      }
+      int hours = minutes / 60;
+      minutes = minutes - hours*60;
+      if(hours < 24){
+        return QString::QString(misc::toString(hours).c_str())+tr("h", "hours")+" "+QString::QString(misc::toString(minutes).c_str())+tr("m", "minutes");
+      }
+      int days = hours / 24;
+      hours = hours - days * 24;
+      if(days < 100){
+        return QString::QString(misc::toString(days).c_str())+tr("d", "days")+" "+QString::QString(misc::toString(hours).c_str())+tr("h ", "hours")+QString::QString(misc::toString(minutes).c_str())+tr("m", "minutes");
+      }
+      return QString::QString(tr("Unknown"));
+    }
+};
+
+//  Trick to get a portable sleep() function
+class SleeperThread : public QThread{
+  public:
+    static void msleep(unsigned long msecs)
+    {
+      QThread::msleep(msecs);
+    }
+};
+
+#endif