mcs/class/corlib/System.IO/LogcatTextWriter.cs

   1 #if MONODROID
   2
   3 using System;
   4 using System.IO;
   5 using System.Text;
   6 using System.Runtime.InteropServices;
   7
   8 namespace System.IO {
   9
  10         class LogcatTextWriter : TextWriter {
  11
  12                 const string LibLog = "/system/lib/liblog.so";
  13                 const string LibLog64 = "/system/lib64/liblog.so";
  14
  15                 TextWriter stdout;
  16                 readonly string appname;
  17                 StringBuilder line = new StringBuilder ();
  18
  19                 public LogcatTextWriter (string appname, TextWriter stdout)
  20                 {
  21                         this.appname = appname;
  22                         this.stdout = stdout;
  23                 }
  24
  25                 public override Encoding Encoding {
  26                         get {return Encoding.UTF8;}
  27                 }
  28
  29                 public override void Write (string s)
  30                 {
  31                         if (s != null)
  32                                 foreach (char c in s)
  33                                         Write (c);
  34                 }
  35
  36                 public override void Write (char value)
  37                 {
  38                         if (value == '\n')
  39                                 WriteLine ();
  40                         else
  41                                 line.Append (value);
  42                 }
  43
  44                 public override void WriteLine ()
  45                 {
  46                         var o = line.ToString ();
  47                         line.Clear ();
  48
  49                         Log (LogLevel.Info, appname, o);
  50                         stdout.WriteLine (o);
  51                 }
  52
  53                 enum LogLevel {
  54                         Unknown,
  55                         Default,
  56                         Verbose,
  57                         Debug,
  58                         Info,
  59                         Warn,
  60                         Error,
  61                         Fatal,
  62                         Silent
  63                 }
  64
  65                 public static bool IsRunningOnAndroid ()
  66                 {
  67                         return File.Exists (LibLog) || File.Exists (LibLog64);
  68                 }
  69
  70                 [DllImport ("liblog")]
  71                 static extern void __android_log_print (LogLevel level, string appname, string format, string args, IntPtr zero);
  72
  73                 static void Log (LogLevel level, string appname, string log)
  74                 {
  75                         __android_log_print (level, appname, "%s", log, IntPtr.Zero);
  76                 }
  77         }
  78 }
  79
  80 #endif  // MONODROID