internal static bool FileEquals(string path1, string path2, FileCompareOptions options)
{
if ((options & FileCompareOptions.ModifiedTime) != 0 &&
File.GetLastWriteTimeUtc(path1) != File.GetLastWriteTimeUtc(path2))
{
return(false);
}
if ((options & FileCompareOptions.Attributes) != 0 &&
File.GetAttributes(path1) != File.GetAttributes(path2))
{
return(false);
}
if ((options & (FileCompareOptions.Size | FileCompareOptions.Content)) != 0)
{
using (var fs1 = new FileStream(path1, FileMode.Open, FileAccess.Read))
using (var fs2 = new FileStream(path2, FileMode.Open, FileAccess.Read))
{
if ((options & FileCompareOptions.Size) != 0 &&
fs1.Length != fs2.Length)
{
return(false);
}
if ((options & FileCompareOptions.Content) != 0 &&
!StreamComparer.Default.ByteEquals(fs1, fs2))
{
return(false);
}
}
}
return(true);
}
internal static FileCompareOptions CompareFiles(
string path1,
string path2,
FileCompareOptions options,
FileAttributes ignoredAttributes = 0,
TimeSpan?allowedTimeDiff = null)
{
if ((options & FileCompareOptions.ModifiedTime) != 0 &&
!LastWriteTimeUtcEquals(path1, path2, allowedTimeDiff))
{
return(FileCompareOptions.ModifiedTime);
}
if ((options & FileCompareOptions.Attributes) != 0 &&
!AttributeEquals(path1, path2, ignoredAttributes))
{
if ((options & (FileCompareOptions.Size | FileCompareOptions.Content)) != 0)
{
using (var fs1 = new FileStream(path1, FileMode.Open, FileAccess.Read))
using (var fs2 = new FileStream(path2, FileMode.Open, FileAccess.Read))
{
if ((options & FileCompareOptions.Size) != 0 &&
fs1.Length != fs2.Length)
{
return(FileCompareOptions.Size);
}
if ((options & FileCompareOptions.Content) != 0 &&
!StreamComparer.Default.ByteEquals(fs1, fs2))
{
return(FileCompareOptions.Content);
}
}
}
return(FileCompareOptions.Attributes);
}
if ((options & (FileCompareOptions.Size | FileCompareOptions.Content)) != 0)
{
using (var fs1 = new FileStream(path1, FileMode.Open, FileAccess.Read))
using (var fs2 = new FileStream(path2, FileMode.Open, FileAccess.Read))
{
if ((options & FileCompareOptions.Size) != 0 &&
fs1.Length != fs2.Length)
{
return(FileCompareOptions.Size);
}
if ((options & FileCompareOptions.Content) != 0 &&
!StreamComparer.Default.ByteEquals(fs1, fs2))
{
return(FileCompareOptions.Content);
}
}
}
return(FileCompareOptions.None);
}
public CopyOptions(
ConflictResolution conflictResolution = ConflictResolution.Skip,
FileCompareOptions compareOptions = FileCompareOptions.None,
bool flat = false)
{
ConflictResolution = conflictResolution;
CompareOptions = compareOptions;
Flat = flat;
}