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#include <efsw/DirectorySnapshot.hpp>
#include <efsw/FileSystem.hpp>
namespace efsw {
DirectorySnapshot::DirectorySnapshot() {}
DirectorySnapshot::DirectorySnapshot( std::string directory ) {
init( directory );
}
DirectorySnapshot::~DirectorySnapshot() {}
void DirectorySnapshot::init( std::string directory ) {
setDirectoryInfo( directory );
initFiles();
}
bool DirectorySnapshot::exists() {
return DirectoryInfo.exists();
}
void DirectorySnapshot::deleteAll( DirectorySnapshotDiff& Diff ) {
FileInfo fi;
for ( FileInfoMap::iterator it = Files.begin(); it != Files.end(); it++ ) {
fi = it->second;
if ( fi.isDirectory() ) {
Diff.DirsDeleted.push_back( fi );
} else {
Diff.FilesDeleted.push_back( fi );
}
}
Files.clear();
}
void DirectorySnapshot::setDirectoryInfo( std::string directory ) {
DirectoryInfo = FileInfo( directory );
}
void DirectorySnapshot::initFiles() {
Files = FileSystem::filesInfoFromPath( DirectoryInfo.Filepath );
FileInfoMap::iterator it = Files.begin();
std::list<std::string> eraseFiles;
/// Remove all non regular files and non directories
for ( ; it != Files.end(); it++ ) {
if ( !it->second.isRegularFile() && !it->second.isDirectory() ) {
eraseFiles.push_back( it->first );
}
}
for ( std::list<std::string>::iterator eit = eraseFiles.begin(); eit != eraseFiles.end();
eit++ ) {
Files.erase( *eit );
}
}
DirectorySnapshotDiff DirectorySnapshot::scan() {
DirectorySnapshotDiff Diff;
Diff.clear();
FileInfo curFI( DirectoryInfo.Filepath );
Diff.DirChanged = DirectoryInfo != curFI;
if ( Diff.DirChanged ) {
DirectoryInfo = curFI;
}
/// If the directory was erased, create the events for files and directories deletion
if ( !curFI.exists() ) {
deleteAll( Diff );
return Diff;
}
FileInfoMap files = FileSystem::filesInfoFromPath( DirectoryInfo.Filepath );
if ( files.empty() && Files.empty() ) {
return Diff;
}
FileInfo fi;
FileInfoMap FilesCpy;
FileInfoMap::iterator it;
FileInfoMap::iterator fiIt;
if ( Diff.DirChanged ) {
FilesCpy = Files;
}
for ( it = files.begin(); it != files.end(); it++ ) {
fi = it->second;
/// File existed before?
fiIt = Files.find( it->first );
if ( fiIt != Files.end() ) {
/// Erase from the file list copy
FilesCpy.erase( it->first );
/// File changed?
if ( ( *fiIt ).second != fi ) {
/// Update the new file info
Files[it->first] = fi;
/// handle modified event
if ( fi.isDirectory() ) {
Diff.DirsModified.push_back( fi );
} else {
Diff.FilesModified.push_back( fi );
}
}
}
/// Only add regular files or directories
else if ( fi.isRegularFile() || fi.isDirectory() ) {
/// New file found
Files[it->first] = fi;
FileInfoMap::iterator fit;
std::string oldFile = "";
/// Check if the same inode already existed
if ( ( fit = nodeInFiles( fi ) ) != Files.end() ) {
oldFile = fit->first;
/// Avoid firing a Delete event
FilesCpy.erase( fit->first );
/// Delete the old file name
Files.erase( fit->first );
if ( fi.isDirectory() ) {
Diff.DirsMoved.push_back( std::make_pair( oldFile, fi ) );
} else {
Diff.FilesMoved.push_back( std::make_pair( oldFile, fi ) );
}
} else {
if ( fi.isDirectory() ) {
Diff.DirsCreated.push_back( fi );
} else {
Diff.FilesCreated.push_back( fi );
}
}
}
}
if ( !Diff.DirChanged ) {
return Diff;
}
/// The files or directories that remains were deleted
for ( it = FilesCpy.begin(); it != FilesCpy.end(); it++ ) {
fi = it->second;
if ( fi.isDirectory() ) {
Diff.DirsDeleted.push_back( fi );
} else {
Diff.FilesDeleted.push_back( fi );
}
/// Remove the file or directory from the list of files
Files.erase( it->first );
}
return Diff;
}
FileInfoMap::iterator DirectorySnapshot::nodeInFiles( FileInfo& fi ) {
FileInfoMap::iterator it;
if ( FileInfo::inodeSupported() ) {
for ( it = Files.begin(); it != Files.end(); it++ ) {
if ( it->second.sameInode( fi ) && it->second.Filepath != fi.Filepath ) {
return it;
}
}
}
return Files.end();
}
void DirectorySnapshot::addFile( std::string path ) {
std::string name( FileSystem::fileNameFromPath( path ) );
Files[name] = FileInfo( path );
}
void DirectorySnapshot::removeFile( std::string path ) {
std::string name( FileSystem::fileNameFromPath( path ) );
FileInfoMap::iterator it = Files.find( name );
if ( Files.end() != it ) {
Files.erase( it );
}
}
void DirectorySnapshot::moveFile( std::string oldPath, std::string newPath ) {
removeFile( oldPath );
addFile( newPath );
}
void DirectorySnapshot::updateFile( std::string path ) {
addFile( path );
}
} // namespace efsw
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