| /* //device/libs/android_runtime/android_util_Log.cpp |
| ** |
| ** Copyright 2006, 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. |
| */ |
| |
| #define LOG_NAMESPACE "log.tag." |
| #define LOG_TAG "Log_println" |
| |
| #include <assert.h> |
| #include <cutils/properties.h> |
| #include <utils/Log.h> |
| #include <utils/String8.h> |
| |
| #include "jni.h" |
| #include "utils/misc.h" |
| #include "android_runtime/AndroidRuntime.h" |
| |
| #define MIN(a,b) ((a<b)?a:b) |
| |
| namespace android { |
| |
| struct levels_t { |
| jint verbose; |
| jint debug; |
| jint info; |
| jint warn; |
| jint error; |
| jint assert; |
| }; |
| static levels_t levels; |
| |
| static int toLevel(const char* value) |
| { |
| switch (value[0]) { |
| case 'V': return levels.verbose; |
| case 'D': return levels.debug; |
| case 'I': return levels.info; |
| case 'W': return levels.warn; |
| case 'E': return levels.error; |
| case 'A': return levels.assert; |
| case 'S': return -1; // SUPPRESS |
| } |
| return levels.info; |
| } |
| |
| static jboolean android_util_Log_isLoggable(JNIEnv* env, jobject clazz, jstring tag, jint level) |
| { |
| #ifndef HAVE_ANDROID_OS |
| return false; |
| #else /* HAVE_ANDROID_OS */ |
| int len; |
| char key[PROPERTY_KEY_MAX]; |
| char buf[PROPERTY_VALUE_MAX]; |
| |
| if (tag == NULL) { |
| return false; |
| } |
| |
| jboolean result = false; |
| |
| const char* chars = env->GetStringUTFChars(tag, NULL); |
| |
| if ((strlen(chars)+sizeof(LOG_NAMESPACE)) > PROPERTY_KEY_MAX) { |
| jclass clazz = env->FindClass("java/lang/IllegalArgumentException"); |
| char buf2[200]; |
| snprintf(buf2, sizeof(buf2), "Log tag \"%s\" exceeds limit of %d characters\n", |
| chars, PROPERTY_KEY_MAX - sizeof(LOG_NAMESPACE)); |
| |
| // release the chars! |
| env->ReleaseStringUTFChars(tag, chars); |
| |
| env->ThrowNew(clazz, buf2); |
| return false; |
| } else { |
| strncpy(key, LOG_NAMESPACE, sizeof(LOG_NAMESPACE)-1); |
| strcpy(key + sizeof(LOG_NAMESPACE) - 1, chars); |
| } |
| |
| env->ReleaseStringUTFChars(tag, chars); |
| |
| len = property_get(key, buf, ""); |
| int logLevel = toLevel(buf); |
| return (logLevel >= 0 && level >= logLevel) ? true : false; |
| #endif /* HAVE_ANDROID_OS */ |
| } |
| |
| /* |
| * In class android.util.Log: |
| * public static native int println_native(int buffer, int priority, String tag, String msg) |
| */ |
| static jint android_util_Log_println_native(JNIEnv* env, jobject clazz, |
| jint bufID, jint priority, jstring tagObj, jstring msgObj) |
| { |
| const char* tag = NULL; |
| const char* msg = NULL; |
| |
| if (msgObj == NULL) { |
| jclass npeClazz; |
| |
| npeClazz = env->FindClass("java/lang/NullPointerException"); |
| assert(npeClazz != NULL); |
| |
| env->ThrowNew(npeClazz, "println needs a message"); |
| return -1; |
| } |
| |
| if (bufID < 0 || bufID >= LOG_ID_MAX) { |
| jclass npeClazz; |
| |
| npeClazz = env->FindClass("java/lang/NullPointerException"); |
| assert(npeClazz != NULL); |
| |
| env->ThrowNew(npeClazz, "bad bufID"); |
| return -1; |
| } |
| |
| if (tagObj != NULL) |
| tag = env->GetStringUTFChars(tagObj, NULL); |
| msg = env->GetStringUTFChars(msgObj, NULL); |
| |
| int res = __android_log_buf_write(bufID, (android_LogPriority)priority, tag, msg); |
| |
| if (tag != NULL) |
| env->ReleaseStringUTFChars(tagObj, tag); |
| env->ReleaseStringUTFChars(msgObj, msg); |
| |
| return res; |
| } |
| |
| /* |
| * JNI registration. |
| */ |
| static JNINativeMethod gMethods[] = { |
| /* name, signature, funcPtr */ |
| { "isLoggable", "(Ljava/lang/String;I)Z", (void*) android_util_Log_isLoggable }, |
| { "println_native", "(IILjava/lang/String;Ljava/lang/String;)I", (void*) android_util_Log_println_native }, |
| }; |
| |
| int register_android_util_Log(JNIEnv* env) |
| { |
| jclass clazz = env->FindClass("android/util/Log"); |
| |
| if (clazz == NULL) { |
| LOGE("Can't find android/util/Log"); |
| return -1; |
| } |
| |
| levels.verbose = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "VERBOSE", "I")); |
| levels.debug = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "DEBUG", "I")); |
| levels.info = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "INFO", "I")); |
| levels.warn = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "WARN", "I")); |
| levels.error = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "ERROR", "I")); |
| levels.assert = env->GetStaticIntField(clazz, env->GetStaticFieldID(clazz, "ASSERT", "I")); |
| |
| return AndroidRuntime::registerNativeMethods(env, "android/util/Log", gMethods, NELEM(gMethods)); |
| } |
| |
| }; // namespace android |
| |