| /* //device/libs/android_runtime/android_text_AndroidCharacter.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_TAG "AndroidUnicode" |
| |
| #include "JNIHelp.h" |
| #include "ScopedPrimitiveArray.h" |
| #include "core_jni_helpers.h" |
| #include "utils/misc.h" |
| #include "utils/Log.h" |
| #include "unicode/uchar.h" |
| |
| #define PROPERTY_UNDEFINED (-1) |
| |
| // ICU => JDK mapping |
| static int directionality_map[U_CHAR_DIRECTION_COUNT] = { |
| 0, // U_LEFT_TO_RIGHT (0) => DIRECTIONALITY_LEFT_TO_RIGHT (0) |
| 1, // U_RIGHT_TO_LEFT (1) => DIRECTIONALITY_RIGHT_TO_LEFT (1) |
| 3, // U_EUROPEAN_NUMBER (2) => DIRECTIONALITY_EUROPEAN_NUMBER (3) |
| 4, // U_EUROPEAN_NUMBER_SEPARATOR (3) => DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR (4) |
| 5, // U_EUROPEAN_NUMBER_TERMINATOR (4) => DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR (5) |
| 6, // U_ARABIC_NUMBER (5) => DIRECTIONALITY_ARABIC_NUMBER (6) |
| 7, // U_COMMON_NUMBER_SEPARATOR (6) => DIRECTIONALITY_COMMON_NUMBER_SEPARATOR (7) |
| 10, // U_BLOCK_SEPARATOR (7) => DIRECTIONALITY_PARAGRAPH_SEPARATOR (10) |
| 11, // U_SEGMENT_SEPARATOR (8) => DIRECTIONALITY_SEGMENT_SEPARATOR (11) |
| 12, // U_WHITE_SPACE_NEUTRAL (9) => DIRECTIONALITY_WHITESPACE (12) |
| 13, // U_OTHER_NEUTRAL (10) => DIRECTIONALITY_OTHER_NEUTRALS (13) |
| 14, // U_LEFT_TO_RIGHT_EMBEDDING (11) => DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING (14) |
| 15, // U_LEFT_TO_RIGHT_OVERRIDE (12) => DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE (15) |
| 2, // U_RIGHT_TO_LEFT_ARABIC (13) => DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC (2) |
| 16, // U_RIGHT_TO_LEFT_EMBEDDING (14) => DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING (16) |
| 17, // U_RIGHT_TO_LEFT_OVERRIDE (15) => DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE (17) |
| 18, // U_POP_DIRECTIONAL_FORMAT (16) => DIRECTIONALITY_POP_DIRECTIONAL_FORMAT (18) |
| 8, // U_DIR_NON_SPACING_MARK (17) => DIRECTIONALITY_NONSPACING_MARK (8) |
| 9, // U_BOUNDARY_NEUTRAL (18) => DIRECTIONALITY_BOUNDARY_NEUTRAL (9) |
| }; |
| |
| namespace android { |
| |
| static void getDirectionalities(JNIEnv* env, jobject obj, jcharArray srcArray, |
| jbyteArray destArray, jint count) |
| { |
| ScopedCharArrayRO src(env, srcArray); |
| if (src.get() == NULL) { |
| return; |
| } |
| ScopedByteArrayRW dest(env, destArray); |
| if (dest.get() == NULL) { |
| return; |
| } |
| |
| if (env->GetArrayLength(srcArray) < count || env->GetArrayLength(destArray) < count) { |
| jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); |
| return; |
| } |
| |
| for (int i = 0; i < count; i++) { |
| if (src[i] >= 0xD800 && src[i] <= 0xDBFF && |
| i + 1 < count && |
| src[i + 1] >= 0xDC00 && src[i + 1] <= 0xDFFF) { |
| int c = 0x00010000 + ((src[i] - 0xD800) << 10) + |
| (src[i + 1] & 0x3FF); |
| int dir = u_charDirection(c); |
| if (dir < 0 || dir >= U_CHAR_DIRECTION_COUNT) |
| dir = PROPERTY_UNDEFINED; |
| else |
| dir = directionality_map[dir]; |
| |
| dest[i++] = dir; |
| dest[i] = dir; |
| } else { |
| int c = src[i]; |
| int dir = u_charDirection(c); |
| if (dir < 0 || dir >= U_CHAR_DIRECTION_COUNT) |
| dest[i] = PROPERTY_UNDEFINED; |
| else |
| dest[i] = directionality_map[dir]; |
| } |
| } |
| } |
| |
| static jint getEastAsianWidth(JNIEnv* env, jobject obj, jchar input) |
| { |
| int width = u_getIntPropertyValue(input, UCHAR_EAST_ASIAN_WIDTH); |
| if (width < 0 || width >= U_EA_COUNT) |
| width = PROPERTY_UNDEFINED; |
| |
| return width; |
| } |
| |
| static void getEastAsianWidths(JNIEnv* env, jobject obj, jcharArray srcArray, |
| jint start, jint count, jbyteArray destArray) |
| { |
| ScopedCharArrayRO src(env, srcArray); |
| if (src.get() == NULL) { |
| return; |
| } |
| ScopedByteArrayRW dest(env, destArray); |
| if (dest.get() == NULL) { |
| return; |
| } |
| |
| if (start < 0 || start > start + count |
| || env->GetArrayLength(srcArray) < (start + count) |
| || env->GetArrayLength(destArray) < count) { |
| jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); |
| return; |
| } |
| |
| for (int i = 0; i < count; i++) { |
| const int srci = start + i; |
| if (src[srci] >= 0xD800 && src[srci] <= 0xDBFF && |
| i + 1 < count && |
| src[srci + 1] >= 0xDC00 && src[srci + 1] <= 0xDFFF) { |
| int c = 0x00010000 + ((src[srci] - 0xD800) << 10) + |
| (src[srci + 1] & 0x3FF); |
| int width = u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH); |
| if (width < 0 || width >= U_EA_COUNT) |
| width = PROPERTY_UNDEFINED; |
| |
| dest[i++] = width; |
| dest[i] = width; |
| } else { |
| int c = src[srci]; |
| int width = u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH); |
| if (width < 0 || width >= U_EA_COUNT) |
| width = PROPERTY_UNDEFINED; |
| |
| dest[i] = width; |
| } |
| } |
| } |
| |
| static jboolean mirror(JNIEnv* env, jobject obj, jcharArray charArray, jint start, jint count) |
| { |
| ScopedCharArrayRW data(env, charArray); |
| if (data.get() == NULL) { |
| return JNI_FALSE; |
| } |
| |
| if (start < 0 || start > start + count |
| || env->GetArrayLength(charArray) < start + count) { |
| jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL); |
| return JNI_FALSE; |
| } |
| |
| jboolean ret = JNI_FALSE; |
| for (int i = start; i < start + count; i++) { |
| // XXX this thinks it knows that surrogates are never mirrored |
| |
| int c1 = data[i]; |
| int c2 = u_charMirror(c1); |
| |
| if (c1 != c2) { |
| data[i] = c2; |
| ret = JNI_TRUE; |
| } |
| } |
| return ret; |
| } |
| |
| static jchar getMirror(JNIEnv* env, jobject obj, jchar c) |
| { |
| return u_charMirror(c); |
| } |
| |
| static const JNINativeMethod gMethods[] = { |
| { "getDirectionalities", "([C[BI)V", |
| (void*) getDirectionalities }, |
| { "getEastAsianWidth", "(C)I", |
| (void*) getEastAsianWidth }, |
| { "getEastAsianWidths", "([CII[B)V", |
| (void*) getEastAsianWidths }, |
| { "mirror", "([CII)Z", |
| (void*) mirror }, |
| { "getMirror", "(C)C", |
| (void*) getMirror } |
| }; |
| |
| int register_android_text_AndroidCharacter(JNIEnv* env) |
| { |
| return RegisterMethodsOrDie(env, "android/text/AndroidCharacter", gMethods, NELEM(gMethods)); |
| } |
| |
| } |