Add a more functional (i.e. fewer-stubs) implementation of System.Data.Linq.
[mono.git] / mcs / class / System.Web / System.Web.Util / FileUtils.cs
1 //
2 // System.Web.Compilation.AppCodeCompiler: A compiler for the App_Code folder
3 //
4 // Authors:
5 //   Marek Habersack (grendello@gmail.com)
6 //
7 // (C) 2006 Marek Habersack
8 //
9
10 //
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
18 // 
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
21 // 
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30
31 using System;
32 using System.Diagnostics;
33 using System.Globalization;
34 using System.IO;
35
36 namespace System.Web.Util
37 {
38         internal sealed class FileUtils
39         {
40                 internal delegate object CreateTempFile (string path);
41
42                 static Random rnd = new Random ();
43                 
44                 internal static object CreateTemporaryFile (string tempdir, CreateTempFile createFile)
45                 {
46                         return CreateTemporaryFile (tempdir, null, null, createFile);
47                 }
48
49                 internal static object CreateTemporaryFile (string tempdir, string extension, CreateTempFile createFile)
50                 {
51                         return CreateTemporaryFile (tempdir, null, extension, createFile);
52                 }
53
54                 internal static object CreateTemporaryFile (string tempdir, string prefix, string extension, CreateTempFile createFile)
55                 {
56                         if (tempdir == null || tempdir.Length == 0)
57                                 return null;
58                         if (createFile == null)
59                                 return null;
60                         string path = null;
61                         object ret = null;
62                         int num;
63                         
64                         do {
65                                 lock (rnd) {
66                                         num = rnd.Next ();
67                                 }
68
69                                 path = Path.Combine (tempdir,
70                                                      String.Format ("{0}{1}{2}", (prefix != null) ? prefix + "." : "",
71                                                                     num.ToString ("x", CultureInfo.InvariantCulture),
72                                                                     (extension != null) ? "." + extension : ""));
73                                         
74                                 try {
75                                         ret = createFile (path);
76                                 } catch (System.IO.IOException) {
77                                 } catch { throw; }
78                         } while (ret == null);
79
80                         return ret;
81                 }
82
83                 [Conditional ("DEVEL")]
84                 public static void WriteLineLog (string logFilePath, string format, params object[] parms)
85                 {
86                         WriteLog (logFilePath, format + Environment.NewLine, parms);
87                 }
88                 
89                 [Conditional ("DEVEL")]
90                 public static void WriteLog (string logFilePath, string format, params object[] parms)
91                 {
92                         string path = logFilePath != null && logFilePath.Length > 0 ? logFilePath :
93                                 Path.Combine (Path.GetTempPath (), "System.Web.log");
94                         using (TextWriter tw = new StreamWriter (path, true)) {
95                                 if (parms != null && parms.Length > 0)
96                                         tw.Write (format, parms);
97                                 else
98                                         tw.Write (format);
99                         }
100                 }
101         }
102 }