src/dataloader.h

   1 /*
   2         Author: Marco Costalba (C) 2005-2007
   3
   4         Copyright: See COPYING file that comes with this distribution
   5
   6 */
   7 #ifndef DATALOADER_H
   8 #define DATALOADER_H
   9
  10 #include <QProcess>
  11 #include <QTime>
  12 #include <QTimer>
  13
  14 class Git;
  15 class FileHistory;
  16 class QString;
  17 class UnbufferedTemporaryFile;
  18
  19 // data exchange facility with 'git log' could be based on QProcess or on
  20 // a temporary file (default). Uncomment following line to use QProcess
  21 // #define USE_QPROCESS
  22
  23 class DataLoader : public QProcess {
  24 Q_OBJECT
  25 public:
  26         DataLoader(Git* g, FileHistory* f);
  27         ~DataLoader();
  28         bool start(const QStringList& args, const QString& wd, const QString& buf);
  29
  30 signals:
  31         void newDataReady(const FileHistory*);
  32         void loaded(FileHistory*,ulong,int,bool,const QString&,const QString&);
  33
  34 private slots:
  35         void on_finished(int, QProcess::ExitStatus);
  36         void on_cancel();
  37         void on_cancel(const FileHistory*);
  38         void on_timeout();
  39
  40 private:
  41         void parseSingleBuffer(const QByteArray& ba);
  42         void baAppend(QByteArray** src, const char* ascii, int len);
  43         void addSplittedChunks(const QByteArray* halfChunk);
  44         bool createTemporaryFile();
  45         ulong readNewData(bool lastBuffer);
  46
  47         Git* git;
  48         FileHistory* fh;
  49         QByteArray* halfChunk;
  50         UnbufferedTemporaryFile* dataFile;
  51         QTime loadTime;
  52         QTimer guiUpdateTimer;
  53         ulong loadedBytes;
  54         bool isProcExited;
  55         bool parsing;
  56         bool canceling;
  57 };
  58
  59 #endif