lib/android/log.nit

   1 # This file is part of NIT (http://www.nitlanguage.org).
   2 #
   3 # Copyright 2014 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # Advanced Android logging services
  18 module log is ldflags "-llog"
  19
  20 import platform
  21
  22 in "C" `{
  23         #include <android/log.h>
  24 `}
  25
  26 # Use Android logs to print
  27 redef fun print(object)
  28 do
  29         log_write(priority_info, app.log_prefix.to_cstring, object.to_s.to_cstring)
  30 end
  31
  32 # Use Android logs to print errors
  33 redef fun print_error(object)
  34 do
  35         log_write(priority_error, app.log_prefix.to_cstring, object.to_s.to_cstring)
  36 end
  37
  38 # Use Android logs to print warnings
  39 redef fun print_warning(object)
  40 do
  41         log_write(priority_warn, app.log_prefix.to_cstring, object.to_s.to_cstring)
  42 end
  43
  44 redef class App
  45         # Prefix to all log messages
  46         protected fun log_prefix: String do return "app.nit"
  47 end
  48
  49 # Default Android log priority
  50 private fun priority_default: Int do return 1
  51
  52 # Verbose Android log priority
  53 private fun priority_verbose: Int do return 2
  54
  55 # Debug Android log priority
  56 private fun priority_debug: Int do return 3
  57
  58 # Info Android log priority
  59 private fun priority_info: Int do return 4
  60
  61 # Warn Android log priority
  62 private fun priority_warn: Int do return 5
  63
  64 # Error Android log priority
  65 private fun priority_error: Int do return 6
  66
  67 # Fatal Android log priority
  68 private fun priority_fatal: Int do return 7
  69
  70 # Silent Android log priority
  71 private fun priority_silent: Int do return 8
  72
  73 # Write `text` to Android log at priority `level` with tag `tag`
  74 private fun log_write(level: Int, tag, text: NativeString) `{
  75         __android_log_write(level, tag, text);
  76 `}