1 /* 2 * Copyright (C) 2013 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 "IcuUtilities" 18 19 #include <android/log.h> 20 #include <nativehelper/JniConstants.h> 21 #include <nativehelper/JNIHelp.h> 22 #include <nativehelper/ScopedLocalRef.h> 23 #include <nativehelper/ScopedUtfChars.h> 24 25 #include "IcuUtilities.h" 26 27 #include "JniException.h" 28 #include "unicode/strenum.h" 29 #include "unicode/ustring.h" 30 #include "unicode/uloc.h" 31 32 jobjectArray fromStringEnumeration(JNIEnv* env, UErrorCode& status, const char* provider, icu::StringEnumeration* se) { 33 if (maybeThrowIcuException(env, provider, status)) { 34 return NULL; 35 } 36 37 int32_t count = se->count(status); 38 if (maybeThrowIcuException(env, "StringEnumeration::count", status)) { 39 return NULL; 40 } 41 42 jobjectArray result = env->NewObjectArray(count, JniConstants::stringClass, NULL); 43 for (int32_t i = 0; i < count; ++i) { 44 const icu::UnicodeString* string = se->snext(status); 45 if (maybeThrowIcuException(env, "StringEnumeration::snext", status)) { 46 return NULL; 47 } 48 ScopedLocalRef<jstring> javaString(env, jniCreateString(env, string->getBuffer(), string->length())); 49 env->SetObjectArrayElement(result, i, javaString.get()); 50 } 51 return result; 52 } 53 54 bool maybeThrowIcuException(JNIEnv* env, const char* function, UErrorCode error) { 55 if (U_SUCCESS(error)) { 56 return false; 57 } 58 const char* exceptionClass = "java/lang/RuntimeException"; 59 if (error == U_ILLEGAL_ARGUMENT_ERROR) { 60 exceptionClass = "java/lang/IllegalArgumentException"; 61 } else if (error == U_INDEX_OUTOFBOUNDS_ERROR || error == U_BUFFER_OVERFLOW_ERROR) { 62 exceptionClass = "java/lang/ArrayIndexOutOfBoundsException"; 63 } else if (error == U_UNSUPPORTED_ERROR) { 64 exceptionClass = "java/lang/UnsupportedOperationException"; 65 } else if (error == U_FORMAT_INEXACT_ERROR) { 66 exceptionClass = "java/lang/ArithmeticException"; 67 } 68 jniThrowExceptionFmt(env, exceptionClass, "%s failed: %s", function, u_errorName(error)); 69 return true; 70 } 71
