backupper.cpp

   1 #include <QSettings>
   2 #include <QDebug>
   3
   4 #include "task.h"
   5 #include "backupper.h"
   6
   7
   8 Backupper::Backupper() {
   9     // search for backup dir
  10     QString path = QFileInfo(QSettings(QSettings::IniFormat, QSettings::UserScope, "ZanzaSoft", "SAK").fileName()).path() + QDir::separator() + "sakbcks";
  11     m_dir =QDir(path);
  12     m_dir.mkpath(path);
  13     m_dir.cd(path);
  14     QStringList list =  m_dir.entryList();
  15     foreach(QString s, list) {
  16         QString fullSuffix = QFileInfo(s).completeSuffix();
  17         QString baseName = QFileInfo(s).baseName();
  18         if (fullSuffix.count() >= 19)
  19             fullSuffix = fullSuffix.mid(fullSuffix.count()-19);
  20         if (fullSuffix.count() == 19 && fullSuffix[14]=='.' && fullSuffix.mid(15) == "cbck") {
  21             QDateTime time = QDateTime::fromString(fullSuffix.left(14), BACKUPDATEFORMAT);
  22             qDebug() << "SAK: found cyclic backup " << s << " on date " << time;
  23             m_cyclicBackups[baseName][time]= s;
  24         }
  25     }
  26 }
  27
  28 void Backupper::doCyclicBackup() {
  29     qDebug() << "CICLIC //////////////////////////////////////////////////////////////////////////////////////////////";
  30     // build the list of files to be backupped
  31     QStringList backupPaths;
  32     QSettings settings(QSettings::IniFormat, QSettings::UserScope, "ZanzaSoft", "SAK");
  33     backupPaths << m_dir.filePath(QFileInfo(settings.fileName()).baseName());
  34
  35     QDir saveDir(QFileInfo(settings.fileName()).dir());
  36     saveDir.mkdir("SakTasks");
  37     saveDir.cd("SakTasks");
  38     QStringList nameFilters;
  39     nameFilters << "*.xml";
  40     QStringList files = saveDir.entryList( nameFilters, QDir::Files);
  41     foreach(QString file, files) {
  42         backupPaths << m_dir.filePath(file);
  43     }
  44
  45     foreach(QString filePath, backupPaths) {
  46         QDateTime now = QDateTime::currentDateTime();
  47         QString fileName = filePath + "." + now.toString(BACKUPDATEFORMAT) + ".cbck";
  48         QString baseName = QFileInfo(fileName).baseName();
  49         QMap<QDateTime, QString>& map = m_cyclicBackups[baseName];
  50         QList<QDateTime> list = map.keys();
  51         if (list.size() >= m_nCyclicBackups) {
  52             int toBeRemoved = list.size() - m_nCyclicBackups + 1;
  53             for(int i=0; i< toBeRemoved; i++) {
  54                 const QDateTime& d = list[i];
  55                 qWarning() << "SAK: remove old circular backup file " << map[d];
  56                 QFile(m_dir.filePath(map[d])).remove();
  57                 map.remove(d);
  58             }
  59         }
  60         QString origFile = saveDir.filePath(QFileInfo(filePath).fileName());
  61         if (!QFile(origFile).copy(fileName) ) {
  62             qWarning() << "SAK: failed to copy " << origFile << " to cyclic backup file " <<  fileName;
  63         } else {
  64             qWarning() << "SAK: backup " << origFile << " to " << fileName;
  65         }
  66     }
  67 }
  68
  69 //BEGIN: INCREMENTAL
  70
  71 Incremental::Incremental() {
  72     // search for backup dir
  73     QString path = QFileInfo(QSettings(QSettings::IniFormat, QSettings::UserScope, "ZanzaSoft", "SAK").fileName()).path() + QDir::separator() + "sakincr";
  74     m_dir =QDir(path);
  75     m_dir.mkpath(path);
  76     m_dir.cd(path);
  77     QStringList list =  m_dir.entryList();
  78     foreach(QString s, list) {
  79         QString fullSuffix = QFileInfo(s).completeSuffix();
  80         QString task, subtask;
  81         int divisor = s.lastIndexOf(":");
  82         if (divisor>=0) {
  83             task =  s.mid(0,divisor);
  84             subtask = QFileInfo(s.mid(divisor+1)).baseName();
  85         } else {
  86             task = QFileInfo(s).baseName();
  87             subtask = QString();
  88         }
  89         if (fullSuffix.count() == 19 && fullSuffix[14]=='.' && fullSuffix.mid(15) == "incr") {
  90             QDateTime time = QDateTime::fromString(fullSuffix.left(14), BACKUPDATEFORMAT);
  91             QFile f(m_dir.filePath(s));
  92             if (!f.open(QIODevice::ReadOnly)) {
  93                 qDebug() << "SAK: error opening file " << f.fileName() << ": " << f.errorString();
  94             }
  95             QDataStream stream(&f);
  96             stream.setVersion(QDataStream::Qt_4_3);
  97             Hit& p = foundPieces[time];
  98             p.task = task;
  99             p.subtask = subtask;
 100             stream >> p.duration;
 101             qDebug() << "SAK: found piece from task \"" << task << "\" subtask \"" << subtask << "\" timestamp " << time << " duration " << Task::hours(p.duration) <<  " hours";
 102             foundFiles << m_dir.filePath(s);
 103         }
 104     }
 105     lastTimeStamp = QDateTime::currentDateTime();
 106 }
 107
 108 void Incremental::writePiece(const QString& task, const QString& subTask, const QDateTime& now, int value) {
 109     QString filename= m_dir.filePath(task + ":" + subTask + "." + now.toString(BACKUPDATEFORMAT) + ".incr");
 110     addedFiles << filename;
 111     QFile f(filename);
 112     f.open(QIODevice::ReadWrite);
 113     QDataStream stream(&f);
 114     stream.setVersion(QDataStream::Qt_4_3);
 115     stream << value;
 116     qDebug() << "SAK: write piece of task " << task << " of duration " << Task::hours(value) << " in file " << filename;
 117     addedPieces[now] = Hit(task, subTask, value);
 118     lastTimeStamp = now;
 119 }
 120
 121 void Incremental::addPiece(const QString& task, const QString& subTask, const QDateTime& now, int value) {
 122     foundPieces.insertMulti(now, Hit(task, subTask, value));
 123     lastTimeStamp = now;
 124 }
 125
 126 void Incremental::clearAddedPieces() {
 127     foreach(const QString& file, addedFiles) {
 128         QFile::remove(file);
 129     }
 130 }
 131
 132 void Incremental::clearMergedPieces() {
 133     foreach(const QString& file, foundFiles) {
 134         if (!QFile::remove(file))
 135             qDebug() << "Failed removing file " << file;
 136     }
 137     foundPieces.clear();
 138 }
 139