/// <summary>
/// Creates instance of <see cref="QuickIOFileMetadata"/>
/// </summary>
/// <param name="uncResultPath">UNC Path of current file</param>
/// <param name="win32FindData">Win32FindData of current file</param>
internal QuickIOFileMetadata( string uncResultPath, Win32FindData win32FindData )
: base(uncResultPath)
{
base.SetFindData( win32FindData );
Bytes = win32FindData.CalculateBytes( );
}
/// <summary>
/// Creates instance of <see cref="QuickIODirectoryMetadata"/>
/// </summary>
/// <param name="win32FindData">Win32FindData of current directory</param>
/// <param name="subDirs">Directories in current directory</param>
/// <param name="subFiles">Files in current directory</param>
/// <param name="uncFullname">UNC Path of current directory</param>
internal QuickIODirectoryMetadata( string uncFullname, Win32FindData win32FindData, IList<QuickIODirectoryMetadata> subDirs, IList<QuickIOFileMetadata> subFiles )
: base(uncFullname)
{
Directories = new ReadOnlyCollection<QuickIODirectoryMetadata>( subDirs );
Files = new ReadOnlyCollection<QuickIOFileMetadata>( subFiles );
base.SetFindData( win32FindData );
}
/// <summary>
/// Creates the folder information on the basis of the path and the handles
/// </summary>
/// <param name="pathInfo"><see cref="QuickIOPathInfo"/></param>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
internal QuickIODirectoryInfo( QuickIOPathInfo pathInfo, Win32FindData win32FindData )
: base(pathInfo, win32FindData)
{
if ( win32FindData != null )
{
RetriveDateTimeInformation( win32FindData );
}
}
/// <summary>
/// Initializes a new instance of the QuickIOAbstractBase class, which acts as a wrapper for a file path.
/// </summary>
/// <param name="pathInfo"><see cref="QuickIOPathInfo"/></param>
/// <param name="findData"><see cref="Win32FindData"/></param>
internal QuickIOFileSystemEntryBase( QuickIOPathInfo pathInfo, Win32FindData findData )
{
this.FindData = findData;
this.PathInfo = pathInfo;
if ( findData != null )
{
this.Attributes = findData.dwFileAttributes;
}
}
/// <summary>
/// Checks whether a directory supplied by PINvoke is relevant
/// </summary>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
/// <returns>true if is relevant; otherwise false</returns>
public static Boolean IsSystemDirectoryEntry( Win32FindData win32FindData )
{
if ( win32FindData.cFileName.Length >= 3 )
{
return false;
}
return ( win32FindData.cFileName == "." || win32FindData.cFileName == ".." );
}
/// <summary>
/// Determined all sub file system entries of a directory
/// </summary>
/// <param name="uncDirectoryPath">Path of the directory</param>
/// <param name="pattern">Search pattern. Uses Win32 native filtering.</param>
/// <param name="searchOption"><see cref="SearchOption"/></param>
/// <param name="pathFormatReturn">Specifies the type of path to return.</param>
/// <param name="enumerateOptions">The enumeration options for exception handling</param>
/// <returns>Collection of <see cref="QuickIODirectoryInfo"/></returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
private static IEnumerable<KeyValuePair<String, QuickIOFileSystemEntryType>> EnumerateFileSystemEntryPaths( String uncDirectoryPath, String pattern = QuickIOPatternConstants.All, SearchOption searchOption = SearchOption.TopDirectoryOnly, QuickIOEnumerateOptions enumerateOptions = QuickIOEnumerateOptions.None, QuickIOPathType pathFormatReturn = QuickIOPathType.Regular )
{
// Match for start of search
var currentPath = QuickIOPath.Combine( uncDirectoryPath, pattern );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
if ( win32Error != Win32ErrorCodes.ERROR_NO_MORE_FILES )
{
InternalQuickIOCommon.NativeExceptionMapping( uncDirectoryPath, win32Error );
}
if ( EnumerationHandleInvalidFileHandle( uncDirectoryPath, enumerateOptions, win32Error ) )
{
yield return new KeyValuePair<string, QuickIOFileSystemEntryType>( );
}
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var resultPath = QuickIOPath.Combine( uncDirectoryPath, win32FindData.cFileName );
// Check for Directory
if ( InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
yield return new KeyValuePair<String, QuickIOFileSystemEntryType>( FormatPathByType( pathFormatReturn, resultPath ), QuickIOFileSystemEntryType.Directory );
// SubFolders?!
if ( searchOption == SearchOption.AllDirectories )
{
foreach ( var match in EnumerateFileSystemEntryPaths( resultPath, pattern, searchOption, enumerateOptions, pathFormatReturn ) )
{
yield return match;
}
}
}
else
{
yield return new KeyValuePair<String, QuickIOFileSystemEntryType>( FormatPathByType( pathFormatReturn, resultPath ), QuickIOFileSystemEntryType.File );
}
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
}
/// <summary>
/// Reurns true if passed path exists
/// </summary>
/// <param name="pathInfo">Path to check</param>
public static Boolean Exists( QuickIOPathInfo pathInfo )
{
var win32FindData = new Win32FindData( );
int win32Error;
var path = pathInfo.FullNameUnc;
if ( pathInfo.IsRoot )
{
path = QuickIOPath.Combine( path, "*" );
}
using ( var fileHandle = FindFirstSafeFileHandle( path, win32FindData, out win32Error ) )
{
// Take care of invalid handles
return !fileHandle.IsInvalid;
}
}
/// <summary>
/// Creates the file information on the basis of the path and <see cref="Win32FindData"/>
/// </summary>
/// <param name="fullName">Full path to the file</param>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
internal QuickIOFileInfo( String fullName, Win32FindData win32FindData )
: this(new QuickIOPathInfo( fullName ), win32FindData)
{
RetriveDateTimeInformation( win32FindData );
CalculateSize( win32FindData );
}
/// <summary>
/// Determined metadata of directory
/// </summary>
/// <param name="uncDirectoryPath">Path of the directory</param>
/// <param name="findData"><see cref="Win32FindData"/></param>
/// <param name="enumerateOptions">The enumeration options for exception handling</param>
/// <returns><see cref="QuickIODirectoryMetadata"/> started with the given directory</returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
internal static QuickIODirectoryMetadata EnumerateDirectoryMetadata( String uncDirectoryPath, Win32FindData findData, QuickIOEnumerateOptions enumerateOptions )
{
// Results
var subFiles = new List<QuickIOFileMetadata>( );
var subDirs = new List<QuickIODirectoryMetadata>( );
// Match for start of search
var currentPath = QuickIOPath.Combine( uncDirectoryPath, QuickIOPatternConstants.All );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
if ( win32Error != Win32ErrorCodes.ERROR_NO_MORE_FILES )
{
InternalQuickIOCommon.NativeExceptionMapping( uncDirectoryPath, win32Error );
}
if ( EnumerationHandleInvalidFileHandle( uncDirectoryPath, enumerateOptions, win32Error ) )
{
return null;
}
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var uncResultPath = QuickIOPath.Combine( uncDirectoryPath, win32FindData.cFileName );
#region File
// if it's a file, add to the collection
if ( !InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
var fileMetaData = new QuickIOFileMetadata( uncResultPath, win32FindData );
subFiles.Add( fileMetaData );
}
#endregion
#region Directory
else
{
var dir = EnumerateDirectoryMetadata( uncResultPath, win32FindData, enumerateOptions );
subDirs.Add( dir );
}
#endregion
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
return new QuickIODirectoryMetadata( uncDirectoryPath, findData, subDirs, subFiles );
}
/// <summary>
/// Gets the <see cref="Win32FindData"/> from the passed path.
/// </summary>
/// <param name="pathInfo">Path</param>
/// <param name="pathFindData"><seealso cref="Win32FindData"/>. Will be null if path does not exist.</param>
/// <returns>true if path is valid and <see cref="Win32FindData"/> is set</returns>
/// <remarks>
/// <see>
/// <cref>QuickIOCommon.NativeExceptionMapping</cref>
/// </see> if invalid handle found.
/// </remarks>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static bool TryGetFindDataFromPath( QuickIOPathInfo pathInfo, out Win32FindData pathFindData )
{
var win32FindData = new Win32FindData( );
int win32Error;
//var path = pathInfo.FullNameUnc;
//if ( pathInfo.IsRoot )
//{
// path = QuickIOPath.Combine( path, QuickIOPatternConstants.All );
//}
using ( var fileHandle = FindFirstSafeFileHandle( pathInfo.FullNameUnc, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
InternalQuickIOCommon.NativeExceptionMapping( pathInfo.FullName, win32Error );
}
// Treffer auswerten
// Ignore . and .. directories
if ( !InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
pathFindData = win32FindData;
return true;
}
}
pathFindData = null;
return false;
}
/// <summary>
/// Search Exection
/// </summary>
/// <param name="uncDirectoryPath">Start directory path</param>
/// <param name="pattern">Search pattern. Uses Win32 native filtering.</param>
/// <param name="searchOption"><see cref="SearchOption"/></param>
/// <param name="enumerateOptions">The enumeration options for exception handling</param>
/// <param name="pathFormatReturn">Specifies the type of path to return.</param>
/// <param name="filterType"><see cref="QuickIOFileSystemEntryType"/></param>
/// <returns>Collection of path</returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
private static IEnumerable<String> FindPaths( String uncDirectoryPath, String pattern = QuickIOPatternConstants.All, SearchOption searchOption = SearchOption.TopDirectoryOnly, QuickIOFileSystemEntryType? filterType = null, QuickIOEnumerateOptions enumerateOptions = QuickIOEnumerateOptions.None, QuickIOPathType pathFormatReturn = QuickIOPathType.Regular )
{
// Result Container
var results = new List<String>( );
// Match for start of search
var currentPath = QuickIOPath.Combine( uncDirectoryPath, pattern );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid && EnumerationHandleInvalidFileHandle( uncDirectoryPath, enumerateOptions, win32Error ) )
{
return new List<String>( );
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var resultPath = QuickIOPath.Combine( uncDirectoryPath, win32FindData.cFileName );
// if it's a file, add to the collection
if ( !InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
if ( filterType != null && ( ( QuickIOFileSystemEntryType ) filterType == QuickIOFileSystemEntryType.File ) )
{
// It's a file
results.Add( FormatPathByType( pathFormatReturn, resultPath ) );
}
}
else
{
// It's a directory
// Check for search searchFocus directories
if ( filterType != null && ( ( QuickIOFileSystemEntryType ) filterType == QuickIOFileSystemEntryType.Directory ) )
{
results.Add( FormatPathByType( pathFormatReturn, resultPath ) );
}
// SubFolders?!
if ( searchOption == SearchOption.AllDirectories )
{
var r = new List<String>( FindPaths( resultPath, pattern, searchOption, filterType, enumerateOptions ) );
if ( r.Count > 0 )
{
results.AddRange( r );
}
}
}
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
// Return result;
return results;
}
internal static extern bool SetLastWriteFileTime( Win32FindData hFile, IntPtr lpCreationTime, IntPtr lpLastAccessTime, ref long lpLastWriteTime );
internal static extern bool FindClose( Win32FindData win32FindData );
internal static extern bool SetAllFileTimes( Win32FindData hFile, ref long lpCreationTime, ref long lpLastAccessTime, ref long lpLastWriteTime );
/// <summary>
/// Determines the time stamp of the given <see cref="Win32FindData"/>
/// </summary>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
private void RetriveDateTimeInformation( Win32FindData win32FindData )
{
LastWriteTimeUtc = win32FindData.GetLastWriteTimeUtc( );
LastAccessTimeUtc = win32FindData.GetLastAccessTimeUtc( );
CreationTimeUtc = win32FindData.GetCreationTimeUtc( );
}
/// <summary>
/// Creates the folder information on the basis of the path and the handles
/// </summary>
/// <param name="fullname">Full path to the directory</param>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
internal QuickIODirectoryInfo( String fullname, Win32FindData win32FindData )
: this(new QuickIOPathInfo( fullname ), win32FindData)
{
}
/// <summary>
/// Returns the handle by given path and finddata
/// </summary>
/// <param name="uncPath">Specified path</param>
/// <param name="win32FindData">FindData to fill</param>
/// <param name="win32Error">Win32Error Code. 0 on success</param>
/// <returns><see cref="Win32FileHandle"/> of specified path</returns>
private static Win32FileHandle FindFirstFileManaged( String uncPath, Win32FindData win32FindData, out Int32 win32Error )
{
var handle = Win32SafeNativeMethods.FindFirstFile( uncPath, win32FindData );
win32Error = Marshal.GetLastWin32Error( );
return handle;
}
///// <summary>
///// Returns the <see cref="Win32FindData"/> from specified <paramref name="fullUncPath"/>
///// </summary>
///// <param name="fullUncPath">Path to the file system entry</param>
///// <returns><see cref="Win32FindData"/></returns>
///// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
///
/// <summary>
/// Returns the <see cref="Win32FindData"/> from specified <paramref name="pathInfo"/>
/// </summary>
/// <param name="pathInfo">Path to the file system entry</param>
/// <returns><see cref="Win32FindData"/></returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static Win32FindData GetFindDataFromPath( QuickIOPathInfo pathInfo )
{
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( pathInfo.FullNameUnc, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
InternalQuickIOCommon.NativeExceptionMapping( pathInfo.FullName, win32Error );
}
// Treffer auswerten
// Ignore . and .. directories
if ( !InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
return win32FindData;
}
}
throw new PathNotFoundException( pathInfo.FullName );
}
/// <summary>
/// Returns the <see cref="SafeFileHandle"/> and fills <see cref="Win32FindData"/> from the passes path.
/// </summary>
/// <param name="path">Path to the file system entry</param>
/// <param name="win32FindData"></param>
/// <param name="win32Error">Last error code. 0 if no error occurs</param>
/// <returns><see cref="SafeFileHandle"/></returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
private static Win32FileHandle FindFirstSafeFileHandle( string path, Win32FindData win32FindData, out Int32 win32Error )
{
var result = Win32SafeNativeMethods.FindFirstFile( path, win32FindData );
win32Error = Marshal.GetLastWin32Error( );
return result;
}
/// <summary>
/// Creates the file information on the basis of the path and <see cref="Win32FindData"/>
/// </summary>
/// <param name="pathInfo">Full path to the file</param>
/// <param name="win32FindData"><see cref="Win32FindData"/></param>
internal QuickIOFileInfo( QuickIOPathInfo pathInfo, Win32FindData win32FindData )
: base(pathInfo, win32FindData)
{
RetriveDateTimeInformation( win32FindData );
CalculateSize( win32FindData );
}
/// <summary>
/// Determines the statistics of the given directory. This includes the number of files, folders and the total size in bytes.
/// </summary>
/// <param name="path">Path to the directory to generate the statistics.</param>
/// <param name="enumerateOptions">Options <see cref="QuickIOEnumerateOptions"/></param>
/// <returns>Provides the statistics of the directory</returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static QuickIOFolderStatisticResult GetDirectoryStatistics( String path, QuickIOEnumerateOptions enumerateOptions = QuickIOEnumerateOptions.None )
{
UInt64 fileCount = 0;
UInt64 folderCount = 0;
UInt64 totalSize = 0;
// Match for start of search
var currentPath = QuickIOPath.Combine( path, QuickIOPatternConstants.All );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
if ( EnumerationHandleInvalidFileHandle( currentPath, enumerateOptions, win32Error ) )
{
return null;
}
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var resultPath = QuickIOPath.Combine( path, win32FindData.cFileName );
// if it's a file, add to the collection
if ( !InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
fileCount++;
totalSize += win32FindData.CalculateBytes( ); win32FindData.CalculateBytes( );
}
else
{
folderCount++;
var result = GetDirectoryStatistics( resultPath, enumerateOptions );
{
folderCount += result.FolderCount;
fileCount += result.FileCount;
totalSize += result.TotalBytes;
}
}
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
// Return result;
return new QuickIOFolderStatisticResult( folderCount, fileCount, totalSize );
}
/// <summary>
/// Determines the type based on the attributes of the handle
/// </summary>
/// <param name="findData"><see cref="Win32FindData"/></param>
/// <returns><see cref="QuickIOFileSystemEntryType"/></returns>
internal static QuickIOFileSystemEntryType DetermineFileSystemEntry( Win32FindData findData )
{
return !InternalHelpers.ContainsFileAttribute( findData.dwFileAttributes, FileAttributes.Directory ) ? QuickIOFileSystemEntryType.File : QuickIOFileSystemEntryType.Directory;
}
/// <summary>
/// Gets the <see cref="Win32FindData"/> from the passed path.
/// </summary>
/// <param name="fullUncPath">Path to the file system entry</param>
/// <param name="estimatedFileSystemEntryType">Estimated Type (File or Directory)</param>
/// <returns><seealso cref="Win32FindData"/></returns>
/// <exception cref="UnmatchedFileSystemEntryTypeException">Searched for file but found folder or vise versa.</exception>
/// <exception cref="PathNotFoundException">No entry found for passed path</exception>
public static Win32FindData GetFindDataFromPath( String fullUncPath, QuickIOFileSystemEntryType? estimatedFileSystemEntryType )
{
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( fullUncPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
InternalQuickIOCommon.NativeExceptionMapping( fullUncPath, win32Error );
}
// Treffer auswerten
// Ignore . and .. directories
if ( !InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
// Check for correct type
switch ( estimatedFileSystemEntryType )
{
// Unimportant
case null:
{
return win32FindData;
}
case QuickIOFileSystemEntryType.Directory:
{
// Check for directory flag
if ( InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
return win32FindData;
}
throw new UnmatchedFileSystemEntryTypeException( QuickIOFileSystemEntryType.Directory, QuickIOFileSystemEntryType.File, fullUncPath );
}
case QuickIOFileSystemEntryType.File:
{
// Check for directory flag
if ( !InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
return win32FindData;
}
throw new UnmatchedFileSystemEntryTypeException( QuickIOFileSystemEntryType.File, QuickIOFileSystemEntryType.Directory, fullUncPath );
}
}
return win32FindData;
}
}
throw new PathNotFoundException( fullUncPath );
}
/// <summary>
/// Gets the <see cref="Win32FindData"/> from the passed <paramref name="pathInfo"/>
/// </summary>
/// <param name="pathInfo"><seealso cref="QuickIOPathInfo"/></param>
/// <param name="pathFindData"><seealso cref="Win32FindData"/>. Will be null if path does not exist.</param>
/// <returns>true if path is valid and <see cref="Win32FindData"/> is set</returns>
/// <remarks>
/// <see>
/// <cref>QuickIOCommon.NativeExceptionMapping</cref>
/// </see> if invalid handle found.
/// </remarks>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static bool TryGetFindDataFromPath( QuickIOPathInfo pathInfo, out Win32FindData pathFindData )
{
if ( TryGetFindDataFromPath( pathInfo.FullNameUnc, out pathFindData ) )
{
return true;
}
pathFindData = null;
return false;
}
/// <summary>
/// Determined all subfolders of a directory
/// </summary>
/// <param name="pathInfo">Path of the directory</param>
/// <param name="pattern">Search pattern. Uses Win32 native filtering.</param>
/// <param name="searchOption"><see cref="SearchOption"/></param>
/// <param name="enumerateOptions">The enumeration options for exception handling</param>
/// <returns><see cref="QuickIODirectoryInfo"/> collection of subfolders</returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
internal static IEnumerable<QuickIODirectoryInfo> EnumerateDirectories( QuickIOPathInfo pathInfo, String pattern = QuickIOPatternConstants.All, SearchOption searchOption = SearchOption.TopDirectoryOnly, QuickIOEnumerateOptions enumerateOptions = QuickIOEnumerateOptions.None )
{
// Match for start of search
var currentPath = QuickIOPath.Combine( pathInfo.FullNameUnc, pattern );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
if ( win32Error != Win32ErrorCodes.ERROR_NO_MORE_FILES )
{
InternalQuickIOCommon.NativeExceptionMapping( pathInfo.FullName, win32Error );
}
if ( EnumerationHandleInvalidFileHandle( pathInfo.FullName, enumerateOptions, win32Error ) )
{
yield return null;
}
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var resultPath = QuickIOPath.Combine( pathInfo.FullName, win32FindData.cFileName );
// Check for Directory
if ( InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
yield return new QuickIODirectoryInfo( resultPath, win32FindData );
// SubFolders?!
if ( searchOption == SearchOption.AllDirectories )
{
foreach ( var match in EnumerateDirectories( new QuickIOPathInfo( resultPath, win32FindData.cFileName ), pattern, searchOption, enumerateOptions ) )
{
yield return match;
}
}
}
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
}
/// <summary>
/// Gets the <see cref="Win32FindData"/> from the passed path.
/// </summary>
/// <param name="fullName">Path</param>
/// <param name="pathFindData"><seealso cref="Win32FindData"/>. Will be null if path does not exist.</param>
/// <returns>true if path is valid and <see cref="Win32FindData"/> is set</returns>
/// <remarks>
/// <see>
/// <cref>QuickIOCommon.NativeExceptionMapping</cref>
/// </see> if invalid handle found.
/// </remarks>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static bool TryGetFindDataFromPath( String fullName, out Win32FindData pathFindData )
{
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstSafeFileHandle( fullName, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid )
{
InternalQuickIOCommon.NativeExceptionMapping( fullName, win32Error );
}
// Treffer auswerten
// Ignore . and .. directories
if ( !InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
pathFindData = win32FindData;
return true;
}
}
pathFindData = null;
return false;
}
/// <summary>
/// Determined all files of a directory
/// </summary>
/// <param name="uncDirectoryPath">Path of the directory</param>
/// <param name="pattern">Search pattern. Uses Win32 native filtering.</param>
/// <param name="searchOption"><see cref="SearchOption"/></param>
/// <param name="enumerateOptions">The enumeration options for exception handling</param>
/// <returns>Collection of files</returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
internal static IEnumerable<QuickIOFileInfo> EnumerateFiles( String uncDirectoryPath, String pattern = QuickIOPatternConstants.All, SearchOption searchOption = SearchOption.TopDirectoryOnly, QuickIOEnumerateOptions enumerateOptions = QuickIOEnumerateOptions.None )
{
// Match for start of search
var currentPath = QuickIOPath.Combine( uncDirectoryPath, pattern );
// Find First file
var win32FindData = new Win32FindData( );
int win32Error;
using ( var fileHandle = FindFirstFileManaged( currentPath, win32FindData, out win32Error ) )
{
// Take care of invalid handles
if ( fileHandle.IsInvalid && EnumerationHandleInvalidFileHandle( uncDirectoryPath, enumerateOptions, win32Error ) )
{
yield return null;
}
// Treffer auswerten
do
{
// Ignore . and .. directories
if ( InternalRawDataHelpers.IsSystemDirectoryEntry( win32FindData ) )
{
continue;
}
// Create hit for current search result
var resultPath = QuickIOPath.Combine( uncDirectoryPath, win32FindData.cFileName );
// Check for Directory
if ( !InternalHelpers.ContainsFileAttribute( win32FindData.dwFileAttributes, FileAttributes.Directory ) )
{
yield return new QuickIOFileInfo( resultPath, win32FindData );
}
else
{
// SubFolders?!
if ( searchOption == SearchOption.AllDirectories )
{
foreach ( var match in EnumerateFiles( resultPath, pattern, searchOption, enumerateOptions ) )
{
yield return match;
}
}
}
// Create new FindData object for next result
win32FindData = new Win32FindData( );
} // Search for next entry
while ( Win32SafeNativeMethods.FindNextFile( fileHandle, win32FindData ) );
}
}
/// <summary>
/// Calculates the size of the file from the handle
/// </summary>
/// <param name="win32FindData"></param>
private void CalculateSize( Win32FindData win32FindData )
{
this.Bytes = win32FindData.CalculateBytes( );
}
