2 // System.IO.UnexceptionalStreamReader.cs
5 // Dietmar Maurer (dietmar@ximian.com)
6 // Miguel de Icaza (miguel@ximian.com)
7 // Dick Porter (dick@ximian.com)
8 // Sebastien Pouliot <sebastien@ximian.com>
10 // (C) Ximian, Inc. http://www.ximian.com
11 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 // This is a wrapper around StreamReader used by System.Console that
35 // catches IOException so that graphical applications don't suddenly
36 // get IO errors when their terminal vanishes. See
37 // UnexceptionalStreamWriter too.
40 using System
.Runtime
.InteropServices
;
43 internal class UnexceptionalStreamReader
: StreamReader
{
45 private static bool[] newline
= new bool [Environment
.NewLine
.Length
];
47 private static char newlineChar
;
49 static UnexceptionalStreamReader () {
50 string n
= Environment
.NewLine
;
55 public UnexceptionalStreamReader(Stream stream)
60 public UnexceptionalStreamReader(Stream stream, bool detect_encoding_from_bytemarks)
61 : base (stream, detect_encoding_from_bytemarks)
65 public UnexceptionalStreamReader(Stream stream
, Encoding encoding
)
66 : base (stream
, encoding
)
70 public UnexceptionalStreamReader(Stream stream, Encoding encoding, bool detect_encoding_from_bytemarks)
71 : base (stream, encoding, detect_encoding_from_bytemarks)
75 public UnexceptionalStreamReader(Stream stream, Encoding encoding, bool detect_encoding_from_bytemarks, int buffer_size)
76 : base (stream, encoding, detect_encoding_from_bytemarks, buffer_size)
80 public UnexceptionalStreamReader(string path)
85 public UnexceptionalStreamReader(string path, bool detect_encoding_from_bytemarks)
86 : base (path, detect_encoding_from_bytemarks)
90 public UnexceptionalStreamReader(string path, Encoding encoding)
91 : base (path, encoding)
95 public UnexceptionalStreamReader(string path, Encoding encoding, bool detect_encoding_from_bytemarks)
96 : base (path, encoding, detect_encoding_from_bytemarks)
100 public UnexceptionalStreamReader(string path, Encoding encoding, bool detect_encoding_from_bytemarks, int buffer_size)
101 : base (path, encoding, detect_encoding_from_bytemarks, buffer_size)
105 public override int Peek ()
108 return(base.Peek ());
109 } catch (IOException
) {
115 public override int Read ()
118 return(base.Read ());
119 } catch (IOException
) {
125 public override int Read ([In
, Out
] char[] dest_buffer
,
126 int index
, int count
)
128 if (dest_buffer
== null)
129 throw new ArgumentNullException ("dest_buffer");
131 throw new ArgumentOutOfRangeException ("index", "< 0");
133 throw new ArgumentOutOfRangeException ("count", "< 0");
134 // ordered to avoid possible integer overflow
135 if (index
> dest_buffer
.Length
- count
)
136 throw new ArgumentException ("index + count > dest_buffer.Length");
139 char nl
= newlineChar
;
142 int c
= base.Read ();
148 dest_buffer
[index
] = (char) c
;
149 // shortcut when a new line is only one character (e.g. Linux, Mac)
154 if (CheckEOL ((char)c
))
159 } catch (IOException
) {
165 private bool CheckEOL (char current
)
167 // general case for any length (e.g. Windows)
168 for (int i
=0; i
< newline
.Length
; i
++) {
170 if (current
== Environment
.NewLine
[i
]) {
172 return (i
== newline
.Length
- 1);
177 for (int j
=0; j
< newline
.Length
; j
++)
182 public override string ReadLine()
185 return(base.ReadLine ());
186 } catch (IOException
) {
192 public override string ReadToEnd()
195 return(base.ReadToEnd ());
196 } catch (IOException
) {