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      1 /*
      2 **
      3 ** Copyright 2011, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #define LOG_TAG "LatinIME: jni"
     19 
     20 #include "com_android_inputmethod_keyboard_ProximityInfo.h"
     21 #include "com_android_inputmethod_latin_BinaryDictionary.h"
     22 #include "jni.h"
     23 #include "proximity_info.h"
     24 
     25 #include <assert.h>
     26 #include <errno.h>
     27 #include <stdio.h>
     28 
     29 using namespace latinime;
     30 
     31 /*
     32  * Returns the JNI version on success, -1 on failure.
     33  */
     34 jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     35     JNIEnv* env = NULL;
     36     jint result = -1;
     37 
     38     if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
     39         LOGE("ERROR: GetEnv failed");
     40         goto bail;
     41     }
     42     assert(env != NULL);
     43 
     44     if (!register_BinaryDictionary(env)) {
     45         LOGE("ERROR: BinaryDictionary native registration failed");
     46         goto bail;
     47     }
     48 
     49     if (!register_ProximityInfo(env)) {
     50         LOGE("ERROR: ProximityInfo native registration failed");
     51         goto bail;
     52     }
     53 
     54     /* success -- return valid version number */
     55     result = JNI_VERSION_1_4;
     56 
     57 bail:
     58     return result;
     59 }
     60 
     61 namespace latinime {
     62 
     63 int registerNativeMethods(JNIEnv* env, const char* className, JNINativeMethod* methods,
     64         int numMethods) {
     65     jclass clazz = env->FindClass(className);
     66     if (clazz == NULL) {
     67         LOGE("Native registration unable to find class '%s'", className);
     68         return JNI_FALSE;
     69     }
     70     if (env->RegisterNatives(clazz, methods, numMethods) < 0) {
     71         LOGE("RegisterNatives failed for '%s'", className);
     72         env->DeleteLocalRef(clazz);
     73         return JNI_FALSE;
     74     }
     75     env->DeleteLocalRef(clazz);
     76     return JNI_TRUE;
     77 }
     78 
     79 } // namespace latinime
     80