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", Helpers.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 }