FileInfo * LocalDirReadJob::stat( const QString & url,
DirTree * tree,
DirInfo * parent )
{
struct stat statInfo;
logDebug() << "url: \"" << url << "\"" << endl;
if ( lstat( url.toUtf8(), &statInfo ) == 0 ) // lstat() OK
{
if ( S_ISDIR( statInfo.st_mode ) ) // directory?
{
DirInfo * dir = new DirInfo( url, &statInfo, tree, parent );
CHECK_NEW( dir );
if ( parent )
parent->insertChild( dir );
if ( dir && parent &&
! tree->isTopLevel( dir )
&& dir->device() != parent->device() )
{
logDebug() << dir << " is a mount point" << endl;
dir->setMountPoint();
}
return dir;
}
else // no directory
{
FileInfo * file = new FileInfo( url, &statInfo, tree, parent );
CHECK_NEW( file );
if ( parent )
parent->insertChild( file );
return file;
}
}
else // lstat() failed
{
logError() << "lstat() failed for \"" << url << "\"" << endl;
return 0;
}
}
void LocalDirReadJob::startReading()
{
struct dirent * entry;
struct stat statInfo;
QString dirName = _dir->url();
QString defaultCacheName = DEFAULT_CACHE_NAME;
// logDebug() << _dir << endl;
if ( ( _diskDir = opendir( dirName.toUtf8() ) ) )
{
_dir->setReadState( DirReading );
while ( ( entry = readdir( _diskDir ) ) )
{
QString entryName = entry->d_name;
if ( entryName != "." &&
entryName != ".." )
{
QString fullName = dirName + "/" + entryName;
if ( lstat( fullName.toUtf8(), &statInfo ) == 0 ) // lstat() OK
{
if ( S_ISDIR( statInfo.st_mode ) ) // directory child?
{
DirInfo *subDir = new DirInfo( entryName, &statInfo, _tree, _dir );
CHECK_NEW( subDir );
_dir->insertChild( subDir );
childAdded( subDir );
if ( ExcludeRules::instance()->match( entryName ) )
{
subDir->setExcluded();
subDir->setReadState( DirOnRequestOnly );
finishReading( subDir );
}
else // No exclude rule matched
{
if ( _dir->device() == subDir->device() ) // normal case
{
LocalDirReadJob * job = new LocalDirReadJob( _tree, subDir );
CHECK_NEW( job );
_tree->addJob( job );
}
else // The subdirectory we just found is a mount point.
{
logDebug() << "Found mount point " << subDir << endl;
subDir->setMountPoint();
if ( _tree->crossFileSystems() )
{
LocalDirReadJob * job = new LocalDirReadJob( _tree, subDir );
CHECK_NEW( job );
_tree->addJob( job );
}
else
{
subDir->setReadState( DirOnRequestOnly );
finishReading( subDir );
}
}
}
}
else // non-directory child
{
if ( entryName == defaultCacheName ) // .qdirstat.cache.gz found?
{
logDebug() << "Found cache file " << defaultCacheName << endl;
//
// Read content of this subdirectory from cache file
//
CacheReadJob * cacheReadJob = new CacheReadJob( _tree, _dir->parent(), fullName );
CHECK_NEW( cacheReadJob );
QString firstDirInCache = cacheReadJob->reader()->firstDir();
if ( firstDirInCache == dirName ) // Does this cache file match this directory?
{
logDebug() << "Using cache file " << fullName << " for " << dirName << endl;
cacheReadJob->reader()->rewind(); // Read offset was moved by firstDir()
_tree->addJob( cacheReadJob ); // Job queue will assume ownership of cacheReadJob
if ( _dir->parent() )
_dir->parent()->setReadState( DirReading );
//
// Clean up partially read directory content
//
DirTree * tree = _tree; // Copy data members to local variables:
DirInfo * dir = _dir; // This object will be deleted soon by killAll()
_queue->killAll( _dir, cacheReadJob ); // Will delete this job as well!
// All data members of this object are invalid from here on!
logDebug() << "Deleting subtree " << dir << endl;
tree->deleteSubtree( dir );
return;
}
else
{
logWarning() << "NOT using cache file " << fullName
<< " with dir " << firstDirInCache
<< " for " << dirName
<< endl;
delete cacheReadJob;
}
}
else
{
FileInfo *child = new FileInfo( entryName, &statInfo, _tree, _dir );
CHECK_NEW( child );
_dir->insertChild( child );
childAdded( child );
}
}
}
else // lstat() error
{
logWarning() << "lstat(" << fullName << ") failed: " << strerror( errno ) << endl;
/*
* Not much we can do when lstat() didn't work; let's at
* least create an (almost empty) entry as a placeholder.
*/
DirInfo *child = new DirInfo( _tree, _dir, entry->d_name );
CHECK_NEW( child );
child->setReadState( DirError );
_dir->insertChild( child );
childAdded( child );
}
}
}
closedir( _diskDir );
_dir->setReadState( DirFinished );
finishReading( _dir );
}
else
{
_dir->setReadState( DirError );
logWarning() << "opendir(" << dirName << ") failed" << endl;
// opendir() doesn't set 'errno' according to POSIX :-(
finishReading( _dir );
}
finished();
// Don't add anything after finished() since this deletes this job!
}
