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//
// System.IO.MonoIO.cs: static interface to native filesystem.
//
// Author:
// Dan Lewis (dihlewis@yahoo.co.uk)
//
// (C) 2002
//
using System;
using System.Runtime.CompilerServices;
namespace System.IO
{
internal sealed class MonoIO {
public static readonly FileAttributes
InvalidFileAttributes = (FileAttributes)(-1);
public static readonly IntPtr
InvalidHandle = (IntPtr)(-1);
// error methods
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static MonoIOError GetLastError ();
public static Exception GetException ()
{
return GetException (String.Empty);
}
public static Exception GetException (string path)
{
MonoIOError error = GetLastError ();
string message;
switch (error) {
// FIXME: add more exception mappings here
case MonoIOError.ERROR_FILE_NOT_FOUND:
message = String.Format ("Could not find file \"{0}\"", path);
return new FileNotFoundException (message);
case MonoIOError.ERROR_PATH_NOT_FOUND:
message = String.Format ("Could not find a part of the path \"{0}\"", path);
return new DirectoryNotFoundException (message);
case MonoIOError.ERROR_ACCESS_DENIED:
message = String.Format ("Access to the path \"{0}\" is denied.", path);
return new UnauthorizedAccessException (message);
default:
message = String.Format ("Win32 IO returned {0}", error);
return new IOException (message);
}
}
// directory methods
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool CreateDirectory (string path);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool RemoveDirectory (string path);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static IntPtr FindFirstFile (string path, out MonoIOStat stat);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool FindNextFile (IntPtr find, out MonoIOStat stat);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool FindClose (IntPtr find);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static string GetCurrentDirectory ();
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool SetCurrentDirectory (string path);
// file methods
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool MoveFile (string path, string dest);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool CopyFile (string path, string dest, bool overwrite);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool DeleteFile (string path);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static FileAttributes GetFileAttributes (string path);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool SetFileAttributes (string path, FileAttributes attrs);
public static bool Exists (string path)
{
FileAttributes attrs = GetFileAttributes (path);
if (attrs == InvalidFileAttributes)
return false;
return true;
}
public static bool ExistsFile (string path)
{
FileAttributes attrs = GetFileAttributes (path);
if (attrs == InvalidFileAttributes)
return false;
if ((attrs & FileAttributes.Directory) != 0)
return false;
return true;
}
public static bool ExistsDirectory (string path)
{
FileAttributes attrs = GetFileAttributes (path);
if (attrs == InvalidFileAttributes)
return false;
if ((attrs & FileAttributes.Directory) == 0)
return false;
return true;
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool GetFileStat (string path, out MonoIOStat stat);
// handle methods
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static IntPtr Open (string filename, FileMode mode, FileAccess access, FileShare share);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool Close (IntPtr handle);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static int Read (IntPtr handle, byte [] dest, int dest_offset, int count);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static int Write (IntPtr handle, byte [] src, int src_offset, int count);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static long Seek (IntPtr handle, long offset, SeekOrigin origin);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool Flush (IntPtr handle);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static long GetLength (IntPtr handle);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool SetLength (IntPtr handle, long length);
[MethodImplAttribute (MethodImplOptions.InternalCall)]
public extern static bool SetFileTime (IntPtr handle, long creation_time, long last_access_time, long last_write_time);
public static bool SetFileTime (string path, long creation_time, long last_access_time, long last_write_time)
{
IntPtr handle;
bool result;
handle = Open (path, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
if (handle == IntPtr.Zero)
return false;
result = SetFileTime (handle, creation_time, last_access_time, last_write_time);
Close (handle);
return result;
}
// console handles
public extern static IntPtr ConsoleOutput {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static IntPtr ConsoleInput {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static IntPtr ConsoleError {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
// path characters
public extern static char VolumeSeparatorChar {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static char DirectorySeparatorChar {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static char AltDirectorySeparatorChar {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static char PathSeparator {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
public extern static char [] InvalidPathChars {
[MethodImplAttribute (MethodImplOptions.InternalCall)]
get;
}
}
}
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