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DriveInfo.cs
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/
DriveInfo.cs
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//
// Copyright (C) 2006 Novell, Inc (http://www.novell.com)
//
// 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.Collections.Generic;
using System.Text;
using System.Runtime.Serialization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace System.IO {
[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class DriveInfo : ISerializable {
string drive_format;
string path;
DriveInfo (string path, string fstype)
{
this.drive_format = fstype;
this.path = path;
}
public DriveInfo (string driveName)
{
if (!Environment.IsUnix) {
if (driveName == null || driveName.Length == 0)
throw new ArgumentException ("The drive name is null or empty", "driveName");
if (driveName.Length >= 2 && driveName [1] != ':')
throw new ArgumentException ("Invalid drive name", "driveName");
// Convert the path to a standard format so we can find it later.
driveName = String.Concat (Char.ToUpperInvariant (driveName [0]).ToString (), ":\\");
}
DriveInfo [] drives = GetDrives ();
Array.Sort (drives, (DriveInfo di1, DriveInfo di2) => String.Compare (di2.path, di1.path, true));
foreach (DriveInfo d in drives){
if (driveName.StartsWith (d.path, StringComparison.OrdinalIgnoreCase)){
this.path = d.path;
this.drive_format = d.drive_format;
return;
}
}
throw new ArgumentException ("The drive name does not exist", "driveName");
}
static void GetDiskFreeSpace (string path, out ulong availableFreeSpace, out ulong totalSize, out ulong totalFreeSpace)
{
MonoIOError error;
if (!GetDiskFreeSpaceInternal (path, out availableFreeSpace, out totalSize, out totalFreeSpace, out error))
throw MonoIO.GetException (path, error);
}
public long AvailableFreeSpace {
get {
ulong availableFreeSpace;
ulong totalSize;
ulong totalFreeSpace;
GetDiskFreeSpace (path, out availableFreeSpace, out totalSize, out totalFreeSpace);
return availableFreeSpace > long.MaxValue ? long.MaxValue : (long) availableFreeSpace;
}
}
public long TotalFreeSpace {
get {
ulong availableFreeSpace;
ulong totalSize;
ulong totalFreeSpace;
GetDiskFreeSpace (path, out availableFreeSpace, out totalSize, out totalFreeSpace);
return totalFreeSpace > long.MaxValue ? long.MaxValue : (long) totalFreeSpace;
}
}
public long TotalSize {
get {
ulong availableFreeSpace;
ulong totalSize;
ulong totalFreeSpace;
GetDiskFreeSpace (path, out availableFreeSpace, out totalSize, out totalFreeSpace);
return totalSize > long.MaxValue ? long.MaxValue : (long) totalSize;
}
}
[MonoTODO ("Currently get only works on Mono/Unix; set not implemented")]
public string VolumeLabel {
get {
return path;
}
set {
throw new NotImplementedException ();
}
}
public string DriveFormat {
get {
return drive_format;
}
}
public DriveType DriveType {
get {
return (DriveType) GetDriveTypeInternal (path);
}
}
public string Name {
get {
return path;
}
}
public DirectoryInfo RootDirectory {
get {
return new DirectoryInfo (path);
}
}
public bool IsReady {
get {
return Directory.Exists (Name);
}
}
[MonoTODO("In windows, alldrives are 'Fixed'")]
public static DriveInfo[] GetDrives ()
{
var drives = Environment.GetLogicalDrives ();
DriveInfo [] infos = new DriveInfo [drives.Length];
int i = 0;
foreach (string s in drives)
infos [i++] = new DriveInfo (s, GetDriveFormat (s));
return infos;
}
void ISerializable.GetObjectData (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
{
throw new NotImplementedException ();
}
public override string ToString ()
{
return(Name);
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
unsafe extern static bool GetDiskFreeSpaceInternal (char *pathName, int pathName_length, out ulong freeBytesAvail,
out ulong totalNumberOfBytes, out ulong totalNumberOfFreeBytes,
out MonoIOError error);
unsafe static bool GetDiskFreeSpaceInternal (string pathName, out ulong freeBytesAvail,
out ulong totalNumberOfBytes, out ulong totalNumberOfFreeBytes,
out MonoIOError error)
{
// FIXME Check for embedded nuls here or in native.
fixed (char *fixed_pathName = pathName) {
return GetDiskFreeSpaceInternal (fixed_pathName, pathName?.Length ?? 0,
out freeBytesAvail, out totalNumberOfBytes, out totalNumberOfFreeBytes,
out error);
}
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
unsafe extern static uint GetDriveTypeInternal (char *rootPathName, int rootPathName_length);
unsafe static uint GetDriveTypeInternal (string rootPathName)
{
// FIXME Check for embedded nuls here or in native.
fixed (char *fixed_rootPathName = rootPathName) {
return GetDriveTypeInternal (fixed_rootPathName, rootPathName?.Length ?? 0);
}
}
[MethodImplAttribute (MethodImplOptions.InternalCall)]
unsafe extern static string GetDriveFormatInternal (char *rootPathName, int rootPathName_length);
unsafe static string GetDriveFormat (string rootPathName)
{
// FIXME Check for embedded nuls here or in native.
fixed (char *fixed_rootPathName = rootPathName) {
return GetDriveFormatInternal (fixed_rootPathName, rootPathName?.Length ?? 0);
}
}
}
}