/* Copyright 2017 The TensorFlow Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/
#include "tensorflow/contrib/lite/error_reporter.h"
#include <cstdarg>
#include <cstdio>

#ifdef __ANDROID__
#include <android/log.h>
#endif

namespace tflite {

ErrorReporter::~ErrorReporter() {}

int ErrorReporter::Report(const char* format, ...) {
  va_list args;
  va_start(args, format);
  int code = Report(format, args);
  va_end(args);
  return code;
}

// TODO(aselle): Make the name of ReportError on context the same, so
// we can use the ensure functions w/o a context and w/ a reporter.
int ErrorReporter::ReportError(void*, const char* format, ...) {
  va_list args;
  va_start(args, format);
  int code = Report(format, args);
  va_end(args);
  return code;
}

int StderrReporter::Report(const char* format, va_list args) {
#ifdef __ANDROID__
  // On Android stderr is not captured for applications, only for code run from
  // the shell. Rather than assume all users will set up a custom error
  // reporter, let's output to logcat here
  va_list args_for_log;
  va_copy(args_for_log, args);
  __android_log_vprint(ANDROID_LOG_ERROR, "tflite", format, args_for_log);
  va_end(args_for_log);
#endif
  const int result = vfprintf(stderr, format, args);
  fputc('\n', stderr);
  return result;
}

ErrorReporter* DefaultErrorReporter() {
  static StderrReporter* error_reporter = new StderrReporter;
  return error_reporter;
}

}  // namespace tflite
