63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LATINIME_LOG_UTILS_H
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#define LATINIME_LOG_UTILS_H
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#include <cstdio>
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#include <stdarg.h>
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#include "defines.h"
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#include "jni.h"
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namespace latinime {
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class LogUtils {
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public:
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static void logToJava(JNIEnv *const env, const char *const format, ...)
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#ifdef __GNUC__
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__attribute__ ((format (printf, 2, 3)))
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#endif // __GNUC__
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{
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static const char *TAG = "LatinIME:LogUtils";
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const jclass androidUtilLogClass = env->FindClass("android/util/Log");
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const jmethodID logDotIMethodId = env->GetStaticMethodID(androidUtilLogClass, "i",
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"(Ljava/lang/String;Ljava/lang/String;)I");
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const jstring javaTag = env->NewStringUTF(TAG);
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va_list argList;
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va_start(argList, format);
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// Get the necessary size. Add 1 for the 0 terminator.
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const int size = vsnprintf(0, 0, format, argList) + 1;
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va_end(argList);
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char cString[size];
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va_start(argList, format);
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vsnprintf(cString, size, format, argList);
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va_end(argList);
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jstring javaString = env->NewStringUTF(cString);
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env->CallStaticIntMethod(androidUtilLogClass, logDotIMethodId, javaTag, javaString);
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env->DeleteLocalRef(javaString);
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env->DeleteLocalRef(javaTag);
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env->DeleteLocalRef(androidUtilLogClass);
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(LogUtils);
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};
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} // namespace latinime
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#endif // LATINIME_LOG_UTILS_H
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