73 lines
2.9 KiB
C++
73 lines
2.9 KiB
C++
/*
|
|
* Copyright (C) 2013, The Android Open Source Project
|
|
*
|
|
* 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 "log_utils.h"
|
|
|
|
#include <cstdio>
|
|
#include <stdarg.h>
|
|
|
|
#include "defines.h"
|
|
|
|
namespace latinime {
|
|
/* static */ void LogUtils::logToJava(JNIEnv *const env, const char *const format, ...) {
|
|
static const char *TAG = "LatinIME:LogUtils";
|
|
const jclass androidUtilLogClass = env->FindClass("android/util/Log");
|
|
if (!androidUtilLogClass) {
|
|
// If we can't find the class, we are probably in off-device testing, and
|
|
// it's expected. Regardless, logging is not essential to functionality, so
|
|
// we should just return. However, FindClass has thrown an exception behind
|
|
// our back and there is no way to prevent it from doing that, so we clear
|
|
// the exception before we return.
|
|
env->ExceptionClear();
|
|
return;
|
|
}
|
|
const jmethodID logDotIMethodId = env->GetStaticMethodID(androidUtilLogClass, "i",
|
|
"(Ljava/lang/String;Ljava/lang/String;)I");
|
|
if (!logDotIMethodId) {
|
|
env->ExceptionClear();
|
|
if (androidUtilLogClass) env->DeleteLocalRef(androidUtilLogClass);
|
|
return;
|
|
}
|
|
const jstring javaTag = env->NewStringUTF(TAG);
|
|
|
|
static const int DEFAULT_LINE_SIZE = 128;
|
|
char fixedSizeCString[DEFAULT_LINE_SIZE];
|
|
va_list argList;
|
|
va_start(argList, format);
|
|
// Get the necessary size. Add 1 for the 0 terminator.
|
|
const int size = vsnprintf(fixedSizeCString, DEFAULT_LINE_SIZE, format, argList) + 1;
|
|
va_end(argList);
|
|
|
|
jstring javaString;
|
|
if (size <= DEFAULT_LINE_SIZE) {
|
|
// The buffer was large enough.
|
|
javaString = env->NewStringUTF(fixedSizeCString);
|
|
} else {
|
|
// The buffer was not large enough.
|
|
va_start(argList, format);
|
|
char variableSizeCString[size];
|
|
vsnprintf(variableSizeCString, size, format, argList);
|
|
va_end(argList);
|
|
javaString = env->NewStringUTF(variableSizeCString);
|
|
}
|
|
|
|
env->CallStaticIntMethod(androidUtilLogClass, logDotIMethodId, javaTag, javaString);
|
|
if (javaString) env->DeleteLocalRef(javaString);
|
|
if (javaTag) env->DeleteLocalRef(javaTag);
|
|
if (androidUtilLogClass) env->DeleteLocalRef(androidUtilLogClass);
|
|
}
|
|
}
|