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#if MONODROID
using System;
using System.IO;
using System.Text;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using Mono;
namespace System.IO {
class LogcatTextWriter : TextWriter {
const string LibLog = "/system/lib/liblog.so";
const string LibLog64 = "/system/lib64/liblog.so";
readonly byte[] appname;
TextWriter stdout;
StringBuilder line = new StringBuilder ();
public LogcatTextWriter (string appname, TextWriter stdout)
{
this.appname = Encoding.UTF8.GetBytes (appname + '\0');
this.stdout = stdout;
}
public override Encoding Encoding {
get {return Encoding.UTF8;}
}
public override void Write (string s)
{
if (s != null)
foreach (char c in s)
Write (c);
}
public override void Write (char value)
{
if (value == '\n')
WriteLine ();
else
line.Append (value);
}
public override void WriteLine ()
{
var o = line.ToString ();
line.Clear ();
Log (o);
stdout.WriteLine (o);
}
void Log (string message)
{
const int buffer_size = 512;
unsafe {
if (Encoding.UTF8.GetByteCount (message) < buffer_size) {
try {
fixed (char *b_message = message) {
byte* buffer = stackalloc byte[buffer_size];
int written = Encoding.UTF8.GetBytes (b_message, message.Length, buffer, buffer_size - 1);
buffer [written] = (byte)'\0';
Log (buffer);
}
return;
} catch (ArgumentException) {
/* It might be due to a failure to encode a character, or due to a smaller than necessary buffer. In the
* secode case, we want to fallback to simply allocating on the heap. */
}
}
using (SafeStringMarshal str = new SafeStringMarshal(message)) {
Log ((byte*) str.Value);
}
}
}
unsafe void Log (byte* b_message)
{
fixed (byte *b_appname = appname) {
Log (b_appname, 1 << 5 /* G_LOG_LEVEL_MESSAGE */, b_message);
}
}
public static bool IsRunningOnAndroid ()
{
return File.Exists (LibLog) || File.Exists (LibLog64);
}
[MethodImpl(MethodImplOptions.InternalCall)]
static unsafe extern void Log (byte *appname, int level, byte *message);
}
}
#endif // MONODROID
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