private FileContents ReadFileContentsWorker(IFileInfoSnapshot fileInfo)
{
const int trailingByteCount = 2;
var block = _fileSystem.ReadFileNulTerminated(fileInfo, trailingByteCount);
var contentsByteCount = block.ByteLength - trailingByteCount; // Padding added by ReadFileNulTerminated
var kind = NativeMethods.Text_GetKind(block.Pointer, contentsByteCount);
switch (kind)
{
case NativeMethods.TextKind.TextKind_Ascii:
// Note: Since we don't support UTF16 regex, just load all utf8 files as ascii.
case NativeMethods.TextKind.TextKind_Utf8:
return(new AsciiFileContents(new FileContentsMemory(block, 0, contentsByteCount), fileInfo.LastWriteTimeUtc));
case NativeMethods.TextKind.TextKind_AsciiWithUtf8Bom:
// Note: Since we don't support UTF16 regex, just load all utf8 files as ascii.
case NativeMethods.TextKind.TextKind_Utf8WithBom:
const int utf8BomSize = 3;
return(new AsciiFileContents(new FileContentsMemory(block, utf8BomSize, contentsByteCount - utf8BomSize), fileInfo.LastWriteTimeUtc));
#if false
case NativeMethods.TextKind.TextKind_Utf8WithBom:
var utf16Block = Conversion.UTF8ToUnicode(block);
block.Dispose();
return(new Utf16FileContents(new FileContentsMemory(utf16Block, 0, utf16Block.ByteLength), fileInfo.LastWriteTimeUtc));
#endif
case NativeMethods.TextKind.TextKind_ProbablyBinary:
block.Dispose();
return(new BinaryFileContents(fileInfo.LastWriteTimeUtc));
default:
Debug.Assert(false);
throw new InvalidOperationException();
}
}
private FileContents ReadFileContents(IFileInfoSnapshot fileInfo)
{
const int trailingByteCount = 2;
var block = _fileSystem.ReadFileNulTerminated(fileInfo, trailingByteCount);
var contentsByteCount = block.ByteLength - trailingByteCount; // Padding added by ReadFileNulTerminated
var kind = NativeMethods.Text_GetKind(block.Pointer, contentsByteCount);
switch (kind) {
case NativeMethods.TextKind.TextKind_Ascii:
// Note: Since we don't support UTF16 regex, just load all utf8 files as ascii.
case NativeMethods.TextKind.TextKind_Utf8:
return new AsciiFileContents(new FileContentsMemory(block, 0, contentsByteCount), fileInfo.LastWriteTimeUtc);
case NativeMethods.TextKind.TextKind_AsciiWithUtf8Bom:
// Note: Since we don't support UTF16 regex, just load all utf8 files as ascii.
case NativeMethods.TextKind.TextKind_Utf8WithBom:
const int utf8BomSize = 3;
return new AsciiFileContents(new FileContentsMemory(block, utf8BomSize, contentsByteCount - utf8BomSize), fileInfo.LastWriteTimeUtc);
#if false
case NativeMethods.TextKind.TextKind_Utf8WithBom:
var utf16Block = Conversion.UTF8ToUnicode(block);
block.Dispose();
return new Utf16FileContents(new FileContentsMemory(utf16Block, 0, utf16Block.ByteLength), fileInfo.LastWriteTimeUtc);
#endif
case NativeMethods.TextKind.TextKind_ProbablyBinary:
block.Dispose();
return new BinaryFileContents(fileInfo.LastWriteTimeUtc);
default:
Debug.Assert(false);
throw new InvalidOperationException();
}
}
public SafeHeapBlockHandle ReadFileNulTerminated(IFileInfoSnapshot fileInfo, int trailingByteCount)
{
return(NativeFile.ReadFileNulTerminated(((FileInfoSnapshot)fileInfo).SlimFileInfo, trailingByteCount));
}
public SafeHeapBlockHandle ReadFileNulTerminated(IFileInfoSnapshot fileInfo, int trailingByteCount) {
return NativeFile.ReadFileNulTerminated(((FileInfoSnapshot)fileInfo).SlimFileInfo, trailingByteCount);
}
public SafeHeapBlockHandle ReadFileNulTerminated(IFileInfoSnapshot fileInfo, int trailingByteCount) {
throw new NotImplementedException();
}
public SafeHeapBlockHandle ReadFileNulTerminated(IFileInfoSnapshot fileInfo, int trailingByteCount)
{
throw new NotImplementedException();
}
