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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "LatinIME: jni"
     18 
     19 #include "jni_common.h"
     20 
     21 #ifndef HOST_TOOL
     22 #include "com_android_inputmethod_keyboard_ProximityInfo.h"
     23 #include "com_android_inputmethod_latin_BinaryDictionary.h"
     24 #include "com_android_inputmethod_latin_DicTraverseSession.h"
     25 #endif
     26 #include "com_android_inputmethod_latin_makedict_Ver3DictDecoder.h"
     27 #include "defines.h"
     28 
     29 /*
     30  * Returns the JNI version on success, -1 on failure.
     31  */
     32 jint JNI_OnLoad(JavaVM *vm, void *reserved) {
     33     JNIEnv *env = 0;
     34 
     35     if (vm->GetEnv(reinterpret_cast<void **>(&env), JNI_VERSION_1_6) != JNI_OK) {
     36         AKLOGE("ERROR: GetEnv failed");
     37         return -1;
     38     }
     39     ASSERT(env);
     40     if (!env) {
     41         AKLOGE("ERROR: JNIEnv is invalid");
     42         return -1;
     43     }
     44 #ifndef HOST_TOOL
     45     if (!latinime::register_BinaryDictionary(env)) {
     46         AKLOGE("ERROR: BinaryDictionary native registration failed");
     47         return -1;
     48     }
     49     if (!latinime::register_DicTraverseSession(env)) {
     50         AKLOGE("ERROR: DicTraverseSession native registration failed");
     51         return -1;
     52     }
     53     if (!latinime::register_ProximityInfo(env)) {
     54         AKLOGE("ERROR: ProximityInfo native registration failed");
     55         return -1;
     56     }
     57 #endif
     58     if (!latinime::register_Ver3DictDecoder(env)) {
     59         AKLOGE("ERROR: Ver3DictDecoder native registration failed");
     60         return -1;
     61     }
     62     /* success -- return valid version number */
     63     return JNI_VERSION_1_6;
     64 }
     65 
     66 namespace latinime {
     67 int registerNativeMethods(JNIEnv *env, const char *const className, const JNINativeMethod *methods,
     68         const int numMethods) {
     69     jclass clazz = env->FindClass(className);
     70     if (!clazz) {
     71         AKLOGE("Native registration unable to find class '%s'", className);
     72         return JNI_FALSE;
     73     }
     74     if (env->RegisterNatives(clazz, methods, numMethods) < 0) {
     75         AKLOGE("RegisterNatives failed for '%s'", className);
     76         env->DeleteLocalRef(clazz);
     77         return JNI_FALSE;
     78     }
     79     env->DeleteLocalRef(clazz);
     80     return JNI_TRUE;
     81 }
     82 } // namespace latinime
     83