/// <summary> Enumerates the files in this collection. </summary>
/// <param name="target"> The target to act on. </param>
/// <param name="searchPattern"> A pattern specifying the search. </param>
/// <returns>
/// An enumerator that allows foreach to be used to process the files in this collection.
/// </returns>
public static IEnumerable <FileInfo> EnumerateFiles(this DirectoryInfo target, string searchPattern)
{
const int MAX_PATH = 248;
const int MAX_FILENAME = 260;
string searchPath = Path.Combine(target.FullName, searchPattern);
if (searchPath.Length >= MAX_PATH)
{
yield break;
}
NativeWin32.WIN32_FIND_DATA findData;
using (NativeWin32.SafeSearchHandle hFindFile = NativeWin32.FindFirstFile(searchPath, out findData))
{
if (!hFindFile.IsInvalid)
{
do
{
if ((findData.dwFileAttributes & FileAttributes.Directory) == 0 && findData.cFileName != "." && findData.cFileName != "..")
{
string fileName = Path.Combine(target.FullName, findData.cFileName);
if (fileName.Length >= MAX_FILENAME)
{
yield break;
}
else
{
yield return(new FileInfo(Path.Combine(target.FullName, findData.cFileName)));
}
}
} while (NativeWin32.FindNextFile(hFindFile, out findData));
}
}
}
IEnumerable <FileInfo> EnumerateFiles(string directory, string searchPattern)
{
NativeWin32.WIN32_FIND_DATA findData;
using (NativeWin32.SafeSearchHandle hFindFile = NativeWin32.FindFirstFile(Path.Combine(directory, searchPattern), out findData))
{
if (!hFindFile.IsInvalid)
{
do
{
if ((findData.dwFileAttributes & FileAttributes.Directory) == 0 && findData.cFileName != "." && findData.cFileName != "..")
{
long len = (((long)findData.nFileSizeHigh) << 0x20) | findData.nFileSizeLow;
yield return(new FileInfo {
FileName = Path.Combine(directory, findData.cFileName), FileSize = len
});
}
} while (NativeWin32.FindNextFile(hFindFile, out findData));
}
}
}
