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//
// FileSystem.cs
//
// Copyright (C) 2004 Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
namespace Beagle.Util {
public class FileSystem {
static public bool Exists (string path)
{
return File.Exists (path) || Directory.Exists (path);
}
static public DateTime GetLastWriteTimeUtc (string path)
{
if (path == null)
throw new ArgumentNullException ("path");
if (File.Exists (path))
return File.GetLastWriteTimeUtc (path);
else if (Directory.Exists (path))
return Directory.GetLastWriteTimeUtc (path);
else
throw new FileNotFoundException (path);
}
static public FileSystemInfo New (string path)
{
if (Directory.Exists (path))
return new DirectoryInfo (path);
return new FileInfo (path);
}
// I guess this is as good a place for this as any.
static public bool IsSymLink (string path)
{
Mono.Unix.Native.Stat stat;
Mono.Unix.Native.Syscall.lstat (path, out stat);
return (stat.st_mode & Mono.Unix.Native.FilePermissions.S_IFLNK) == Mono.Unix.Native.FilePermissions.S_IFLNK;
}
static public bool IsSpecialFile (string path)
{
Mono.Unix.Native.Stat stat;
Mono.Unix.Native.Syscall.lstat (path, out stat);
Mono.Unix.Native.FilePermissions type = (stat.st_mode & Mono.Unix.Native.FilePermissions.S_IFMT);
if (type == Mono.Unix.Native.FilePermissions.S_IFLNK
|| type == Mono.Unix.Native.FilePermissions.S_IFCHR
|| type == Mono.Unix.Native.FilePermissions.S_IFBLK
|| type == Mono.Unix.Native.FilePermissions.S_IFIFO
|| type == Mono.Unix.Native.FilePermissions.S_IFSOCK)
return true;
return false;
}
public static bool IsWritable (string path)
{
Mono.Unix.Native.Stat stat;
Mono.Unix.Native.Syscall.lstat (path, out stat);
Mono.Unix.Native.FilePermissions type = (stat.st_mode & Mono.Unix.Native.FilePermissions.S_IFMT);
if (type == Mono.Unix.Native.FilePermissions.S_IWUSR
|| type == Mono.Unix.Native.FilePermissions.S_IWGRP
|| type == Mono.Unix.Native.FilePermissions.S_IWOTH)
return true;
return false;
}
// Special version of this function which handles the root directory.
static public string GetDirectoryNameRootOk (string path)
{
// System.IO.Path.GetDirectoryName ("/") returns null.
// Handle it specially.
if (path == "/")
return path;
return System.IO.Path.GetDirectoryName (path);
}
}
}
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