diff -r 5c5b4464b24f -r 876eed30ba3b file.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/file.cpp	Tue Mar 23 11:54:30 2010 +0000
@@ -0,0 +1,500 @@
+#include <QDir>
+#include <QMessageBox>
+#include <QPixmap>
+#include <QLabel>
+#include <QTextStream>
+#include <iostream>
+#include <cstdlib>
+
+#include "file.h"
+#include "process.h"
+
+#if defined(Q_OS_WIN32)
+#include "mkdtemp.h"
+#include <windows.h>
+#endif
+
+QString maskPath(QString p)
+{
+	// Change " " to "\ " to enable blanks in filenames
+	p=p.replace(QChar('&'),"\\&");
+	return p.replace(QChar(' '),"\\ ");
+}
+
+QString convertToRel (const QString &src, const QString &dst)
+{
+	QString s=src;
+	QString d=dst;
+	int i;
+
+	if (s==d) 
+	{
+		// Special case, we just need the name of the file,
+		// not the complete path
+		i=d.findRev ("/");
+		d=d.right (d.length()-i-1);
+	} else
+	{
+		// Find relative path from src to dst
+
+		// Remove the first "/"
+		if (s.section ("/",0,0).isEmpty()) 
+		{
+			s=s.right (s.length()-1);
+			d=d.right (d.length()-1);
+		}
+		
+		// remove identical left parts
+		while (s.section("/",0,0) == d.section("/",0,0) ) 
+		{
+			i=s.find ("/");
+			s=s.right (s.length()-i-1);
+			d=d.right (d.length()-i-1);
+		}
+
+		// Now take care of paths where we have to go back first
+		int srcsep=s.count("/");
+		int dstsep=d.count("/");
+		if (srcsep <=  dstsep )
+		{
+			// find path to go up first and then back to dst
+			i=1;
+			while (i<=srcsep) 
+			{
+				d="../"+d;
+				i++;
+			}	
+		}
+	}	
+	return d;
+}
+
+#include <QFileDialog>
+extern QString vymName;
+extern QDir lastFileDir;
+
+QString browseDirectory (QWidget *parent,const QString &caption)
+{
+	QFileDialog fd(parent,caption);
+	fd.setMode (QFileDialog::DirectoryOnly);
+	fd.setCaption(vymName+ " - "+caption);
+	fd.setDir (lastFileDir);
+	fd.show();
+	
+	if ( fd.exec() == QDialog::Accepted )
+		return fd.selectedFile();
+	else
+		return "";
+}
+
+
+
+bool reallyWriteDirectory(const QString &dir)
+{
+	QStringList eList = QDir(dir).entryList();
+	if (eList.first() ==".")  eList.pop_front();	// remove "."
+	if (eList.first() =="..") eList.pop_front();	// remove "."
+	if (!eList.isEmpty())
+	{
+		QMessageBox mb( vymName,
+			QObject::tr("The directory %1 is not empty.\nDo you risk to overwrite its contents?","write directory").arg(dir),
+		QMessageBox::Warning,
+		QMessageBox::Yes ,
+		QMessageBox::Cancel | QMessageBox::Default,
+		QMessageBox::NoButton );
+
+		mb.setButtonText( QMessageBox::Yes, QObject::tr("Overwrite") );
+		mb.setButtonText( QMessageBox::No, QObject::tr("Cancel"));
+		switch( mb.exec() ) 
+		{
+			case QMessageBox::Yes:
+				// save 
+				return true;
+			case QMessageBox::Cancel:
+				// do nothing
+				return false;
+		}
+	}
+	return true;
+}
+
+QString makeTmpDir (bool &ok, QString prefix)
+{
+	bool b;
+	QString path=makeUniqueDir (b,QDir::tempPath()+"/"+prefix+"-XXXXXX");
+	ok=b;
+	return path;
+}
+
+bool isInTmpDir(QString fn)
+{
+	QString temp=QDir::tempPath();
+	int l=temp.length();
+	return fn.left(l)==temp;
+}
+
+QString makeUniqueDir (bool &ok,QString s)
+{
+	// Create unique directory e.g. for s="/tmp/vym-XXXXXX"
+
+	// Convert Separators
+	s=QDir::convertSeparators(s);
+
+	// Convert QString to string 
+	ok=true;
+	char *p;
+	int bytes=s.length();
+	p=(char*) malloc (bytes+1);
+	int i;
+	for (i=0;i<bytes;i++)
+		p[i]=s.at(i).latin1();
+	p[bytes]=0;	
+
+	QString r=mkdtemp (p);
+	if (r.isEmpty()) ok=false;
+	free (p);
+	return r;
+}
+
+void removeDir(QDir d)
+{
+	// This check should_ not be necessary, but proved to be useful ;-)
+	if (!isInTmpDir(d.path()))
+	{
+		qWarning ("file.cpp::removeDir should remove "+d.path()+" - aborted.");
+		return;
+	}
+
+	// Traverse directories
+	d.setFilter( QDir::Dirs| QDir::Hidden | QDir::NoSymLinks );
+	QFileInfoList list = d.entryInfoList();
+	QFileInfo fi;
+
+	for (int i = 0; i < list.size(); ++i) 
+	{
+		fi=list.at(i);
+		if (fi.fileName() != "." && fi.fileName() != ".." )
+		{
+			if ( !d.cd(fi.fileName()) ) 
+				qWarning ("removeDir() cannot find the directory "+fi.fileName());
+			else 
+			{
+				// Recursively remove subdirs
+				removeDir (d);
+				d.cdUp();
+			}
+		}	
+	}
+
+	// Traverse files
+	d.setFilter( QDir::Files| QDir::Hidden | QDir::NoSymLinks );
+	list = d.entryInfoList();
+
+	for (int i = 0; i < list.size(); ++i) 
+	{
+		fi=list.at(i);
+		QFile (fi.filePath()).remove(); 
+	}	
+
+	if (!d.rmdir(d.path()))
+		qWarning ("removeDir("+d.path()+") failed!");
+}		
+
+void copyDir (QDir src, QDir dst)
+{
+	system ("cp -r "+src.path()+"/* "+dst.path());
+
+	/*
+	ErrorCode err=success;
+
+	Process *cpProc=new Process ();
+	QStringList args;
+	cpProc->setWorkingDirectory (src.path());
+	args <<"-r";
+	args <<src.path();
+	args <<dst.path();
+
+	cpProc->start ("cp",args);
+	if (!cpProc->waitForStarted() )
+	{	
+		// zip could not be started
+		QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+					   QObject::tr("Couldn't start zip to compress data."));
+		err=aborted;
+	} else
+	{
+		// zip could be started
+		cpProc->waitForFinished();
+		if (cpProc->exitStatus()!=QProcess::NormalExit )
+		{
+			QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+						   QObject::tr("cp didn't exit normally")+
+						   "\n" + cpProc->getErrout());
+			err=aborted;
+		} else
+		{
+			if (cpProc->exitCode()>0)
+			{
+				QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+						   QString("cp exit code:  %1").arg(cpProc->exitCode() )+
+						   "\n" + cpProc->getErrout() );
+				err=aborted;
+			}
+		}
+	}	// cp could be started
+	*/
+}
+
+void makeSubDirs (const QString &s)
+{
+	QDir d(s);
+	d.mkdir(s);
+	d.mkdir ("images");	
+	d.mkdir ("flags");	
+}
+
+ErrorCode zipDir (const QDir &zipDir, const QString &zipName)
+{
+	ErrorCode err=success;
+	
+	// zip the temporary directory
+	QStringList args;
+	Process *zipProc=new Process ();
+	zipProc->setWorkingDirectory (zipDir.path());
+	args <<"-r";
+	args <<zipName;
+	args <<".";
+
+	zipProc->start ("zip",args);
+	if (!zipProc->waitForStarted() )
+	{	
+		// zip could not be started
+		QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+					   QObject::tr("Couldn't start zip to compress data."));
+		err=aborted;
+	} else
+	{
+		// zip could be started
+		zipProc->waitForFinished();
+		if (zipProc->exitStatus()!=QProcess::NormalExit )
+		{
+			QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+						   QObject::tr("zip didn't exit normally")+
+						   "\n" + zipProc->getErrout());
+			err=aborted;
+		} else
+		{
+			if (zipProc->exitCode()>0)
+			{
+				QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+						   QString("zip exit code:  %1").arg(zipProc->exitCode() )+
+						   "\n" + zipProc->getErrout() );
+				err=aborted;
+			}
+		}
+	}	// zip could be started
+	return err;	
+}
+
+ErrorCode unzipDir (const QDir &zipDir, const QString &zipName)
+{
+	ErrorCode err=success;
+
+	// Try to unzip file
+#if !defined(Q_OS_WIN32)
+	QStringList args;
+	Process *zipProc=new Process ();
+	zipProc->setWorkingDirectory (zipDir.path());
+	args << "-o";	// overwrite existing files!
+	args << zipName ;
+	args << "-d";
+	args << zipDir.path();
+
+	zipProc->start ("unzip",args);
+	if (!zipProc->waitForStarted() )
+	{
+		QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+					   QObject::tr("Couldn't start unzip to decompress data."));
+		err=aborted;
+		
+	} else
+	{
+		zipProc->waitForFinished();
+		if (zipProc->exitStatus()!=QProcess::NormalExit )
+		{
+			QMessageBox::critical( 0,QObject::tr( "Critical Error" ),
+						   QObject::tr("unzip didn't exit normally") +
+						   zipProc->getErrout() );
+			err=aborted;
+		} else
+		{
+			if (zipProc->exitCode()>0)
+			{
+				if (zipProc->exitCode()==9)
+					// no zipped file, but maybe .xml or old version? Try again.
+					err=nozip;
+				else	
+				{
+					QMessageBox::critical( 0, QObject::tr( "Critical Error" ),
+								   QString("unzip exit code:  %1").arg(zipProc->exitCode() ) +
+								   zipProc->getErrout() );
+					err=aborted;
+				}
+			} 
+		}
+	}
+#else
+    // Do this process creation using Win32 API.
+    //! Create process.
+    PROCESS_INFORMATION piProcInfo;
+    STARTUPINFO siStartInfo;
+
+    // Initialize members of the PROCESS_INFORMATION structure.
+    ::ZeroMemory( &piProcInfo, sizeof(PROCESS_INFORMATION) );
+
+    // Set up members of the STARTUPINFO structure.
+    ::ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
+    siStartInfo.cb = sizeof(STARTUPINFO);
+
+    // Create command line.
+    QString argv("unzip -o ");
+    argv.append(QDir::convertSeparators(zipName));
+    argv.append(" -d ");
+    argv.append(QDir::convertSeparators(zipDir.path()));
+
+    // Create the child process.
+    if( !::CreateProcess(NULL, 
+        (LPWSTR)argv.unicode(), // command line
+        NULL, // process security attributes
+        NULL, // primary thread security attributes
+        TRUE, // handles are inherited
+        0, // creation flags
+        NULL, // use parent's environment
+        NULL, // use parent's current directory
+        &siStartInfo, // STARTUPINFO pointer
+        &piProcInfo) ) // receives PROCESS_INFORMATION
+    {
+        err = aborted;
+    }
+    else
+    {
+        // Wait for it to finish.
+        ::WaitForSingleObject( piProcInfo.hProcess, 10000 );
+    }
+#endif
+	return err;	
+}
+
+bool loadStringFromDisk (const QString &fname, QString &s)
+{
+	s="";
+	QFile file ( fname);
+	if ( !file.open( QIODevice::ReadOnly ) ) return false;
+
+	QTextStream ts( &file );
+	ts.setEncoding (QTextStream::UnicodeUTF8);
+	while ( !ts.atEnd() ) 
+		s+=ts.readLine()+"\n"; 
+	file.close();
+	return true;
+}
+
+bool saveStringToDisk (const QString &fname, const QString &s)
+{
+	QFile file( fname);
+
+	file.setName ( fname);
+	if ( !file.open( QIODevice::WriteOnly ) ) 
+	{
+		file.close();
+		return false;
+	}	
+
+	// Write it finally, and write in UTF8, no matter what 
+	QTextStream ts( &file );
+	ts.setEncoding (QTextStream::UnicodeUTF8);
+	ts << s;
+	file.close();
+	return true;
+}
+
+
+ImagePreview::ImagePreview (QWidget *par=0): QLabel (par)
+{
+	fdia=(Q3FileDialog*)par;
+}
+
+void ImagePreview::previewUrl( const Q3Url &u )
+{
+    QString path = u.path();
+    QPixmap pix( path );
+    if ( pix.isNull() )
+	{
+		// Strange: If we have fd->setMode (QFileDialog::ExistingFiles)
+		// in the filedialog, then there are 3 calls to previewURL 
+		// for each selection. And only the first is the actual selected file
+		// while the following 2 point to the directory above the current one.
+		// So here's my workaround:
+		
+		if (fdia && fdia->selectedFiles().count()==0)
+			setText( QObject::tr("This is not an image.") );
+		if (fdia &&fdia->selectedFiles().count()>1)
+			setText( QObject::tr("Sorry, no preview for\nmultiple selected files.") );
+	}	
+    else
+	{
+		float max_w=300;
+		float max_h=300;
+		float r;
+		if (pix.width()>max_w)
+		{
+			r=max_w / pix.width();
+			pix.resize(qRound(pix.width()*r), qRound(pix.height()*r));
+			// TODO not a resize, but a shrink/enlarge is needed here...
+		}
+		if (pix.height()>max_h)
+		{
+			r=max_h / pix.height();
+			pix.resize(qRound(pix.width()*r), qRound(pix.height()*r));
+			// TODO not a resize, but a shrink/enlarge is needed here...
+		}
+        setPixmap( pix );
+	}	
+}
+
+ImageIO::ImageIO ()
+{
+	// Create list with supported image types
+	// foreach (QByteArray format, QImageWriter::supportedImageFormats()) 
+	// imageTypes.append( tr("%1...").arg(QString(format).toUpper()));
+	imageFilters.append ("Images (*.png *.jpg *.jpeg *.bmp *.bmp *.ppm *.xpm *.xbm)");
+	imageTypes.append ("PNG");
+	imageFilters.append ("Portable Network Graphics (*.png)");
+	imageTypes.append ("PNG");
+	imageFilters.append ("Joint Photographic Experts Group (*.jpg)");
+	imageTypes.append ("JPG");
+	imageFilters.append ("Joint Photographic Experts Group (*.jpeg)");
+	imageTypes.append ("JPG");
+	imageFilters.append ("Windows Bitmap (*.bmp)");
+	imageTypes.append ("BMP");
+	imageFilters.append ("Portable Pixmap (*.ppm)");
+	imageTypes.append ("PPM");
+	imageFilters.append ("X11 Bitmap (*.xpm)");
+	imageTypes.append ("XPM");
+	imageFilters.append ("X11 Bitmap (*.xbm)");
+	imageTypes.append ("XBM");
+}
+
+QStringList ImageIO::getFilters()
+{
+	return imageFilters;
+}
+
+QString ImageIO::getType(QString filter)
+{
+	for (int i=0;i<imageFilters.count()+1;i++)
+		if (imageFilters.at(i)==filter) return imageTypes.at(i);
+	return QString();	
+}
+
+