/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="callback">The function to call with the filenames</param>
/// <param name="folderList">A function to call that lists all folders in the supplied folder</param>
/// <param name="fileList">A function to call that lists all files in the supplied folder</param>
/// <param name="attributeReader">A function to call that obtains the attributes for an element, set to null to avoid reading attributes</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable <string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback, FileSystemInteraction folderList, FileSystemInteraction fileList, ExtractFileAttributes attributeReader)
{
Stack <string> lst = new Stack <string>();
var isFolder = false;
try
{
if (attributeReader == null)
{
isFolder = true;
}
else
{
isFolder = (attributeReader(rootpath) & System.IO.FileAttributes.Directory) == System.IO.FileAttributes.Directory;
}
}
catch
{
}
if (isFolder)
{
rootpath = AppendDirSeparator(rootpath);
try
{
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Directory : attributeReader(rootpath);
if (callback(rootpath, rootpath, attr))
{
lst.Push(rootpath);
}
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, rootpath, ATTRIBUTE_ERROR | System.IO.FileAttributes.Directory);
}
while (lst.Count > 0)
{
string f = AppendDirSeparator(lst.Pop());
yield return(f);
try
{
foreach (string s in folderList(f))
{
var sf = AppendDirSeparator(s);
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Directory : attributeReader(sf);
if (callback(rootpath, sf, attr))
{
lst.Push(sf);
}
}
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, f, ATTRIBUTE_ERROR | System.IO.FileAttributes.Directory);
}
string[] files = null;
if (fileList != null)
{
try
{
files = fileList(f);
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
}
/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="callback">The function to call with the filenames</param>
/// <param name="folderList">A function to call that lists all folders in the supplied folder</param>
/// <param name="fileList">A function to call that lists all files in the supplied folder</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable <string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback, FileSystemInteraction folderList, FileSystemInteraction fileList)
{
return(EnumerateFileSystemEntries(rootpath, callback, folderList, fileList, null));
}
/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="filter">An optional filter to apply to the filenames</param>
/// <param name="callback">The function to call with the filenames</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable <string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback)
{
return(EnumerateFileSystemEntries(rootpath, callback, new FileSystemInteraction(System.IO.Directory.GetDirectories), new FileSystemInteraction(System.IO.Directory.GetFiles)));
}
/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="callback">The function to call with the filenames</param>
/// <param name="folderList">A function to call that lists all folders in the supplied folder</param>
/// <param name="fileList">A function to call that lists all files in the supplied folder</param>
/// <param name="attributeReader">A function to call that obtains the attributes for an element, set to null to avoid reading attributes</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable<string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback, FileSystemInteraction folderList, FileSystemInteraction fileList, ExtractFileAttributes attributeReader)
{
Stack<string> lst = new Stack<string>();
var isFolder = false;
try
{
if (attributeReader == null)
isFolder = true;
else
isFolder = (attributeReader(rootpath) & System.IO.FileAttributes.Directory) == System.IO.FileAttributes.Directory;
}
catch
{
}
if (isFolder)
{
rootpath = AppendDirSeparator(rootpath);
try
{
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Directory : attributeReader(rootpath);
if (callback(rootpath, rootpath, attr))
lst.Push(rootpath);
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, rootpath, ATTRIBUTE_ERROR | System.IO.FileAttributes.Directory);
}
while (lst.Count > 0)
{
string f = AppendDirSeparator(lst.Pop());
yield return f;
try
{
foreach(string s in folderList(f))
{
var sf = AppendDirSeparator(s);
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Directory : attributeReader(sf);
if (callback(rootpath, sf, attr))
lst.Push(sf);
}
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, f, ATTRIBUTE_ERROR | System.IO.FileAttributes.Directory);
}
string[] files = null;
if (fileList != null)
try
{
files = fileList(f);
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, f, ATTRIBUTE_ERROR);
}
if (files != null)
foreach(var s in files)
{
try
{
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Normal : attributeReader(s);
if (!callback(rootpath, s, attr))
continue;
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, s, ATTRIBUTE_ERROR);
continue;
}
yield return s;
}
}
}
else
{
try
{
System.IO.FileAttributes attr = attributeReader == null ? System.IO.FileAttributes.Normal : attributeReader(rootpath);
if (!callback(rootpath, rootpath, attr))
yield break;
}
catch (System.Threading.ThreadAbortException)
{
throw;
}
catch (Exception)
{
callback(rootpath, rootpath, ATTRIBUTE_ERROR);
yield break;
}
yield return rootpath;
}
}
/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="callback">The function to call with the filenames</param>
/// <param name="folderList">A function to call that lists all folders in the supplied folder</param>
/// <param name="fileList">A function to call that lists all files in the supplied folder</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable<string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback, FileSystemInteraction folderList, FileSystemInteraction fileList)
{
return EnumerateFileSystemEntries(rootpath, callback, folderList, fileList, null);
}
/// <summary>
/// Returns a list of all files found in the given folder.
/// The search is recursive.
/// </summary>
/// <param name="rootpath">The folder to look in</param>
/// <param name="filter">An optional filter to apply to the filenames</param>
/// <param name="callback">The function to call with the filenames</param>
/// <returns>A list of the full filenames</returns>
public static IEnumerable<string> EnumerateFileSystemEntries(string rootpath, EnumerationFilterDelegate callback)
{
return EnumerateFileSystemEntries(rootpath, callback, new FileSystemInteraction(System.IO.Directory.GetDirectories), new FileSystemInteraction(System.IO.Directory.GetFiles));
}
