1 /* //device/libs/android_runtime/android_text_AndroidCharacter.cpp
3 ** Copyright 2006, The Android Open Source Project
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
9 ** http://www.apache.org/licenses/LICENSE-2.0
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.
18 #define LOG_TAG "AndroidUnicode"
21 #include "ScopedPrimitiveArray.h"
22 #include <android_runtime/AndroidRuntime.h>
23 #include "utils/misc.h"
24 #include "utils/Log.h"
25 #include "unicode/uchar.h"
27 #define PROPERTY_UNDEFINED (-1)
30 static int directionality_map[U_CHAR_DIRECTION_COUNT] = {
31 0, // U_LEFT_TO_RIGHT (0) => DIRECTIONALITY_LEFT_TO_RIGHT (0)
32 1, // U_RIGHT_TO_LEFT (1) => DIRECTIONALITY_RIGHT_TO_LEFT (1)
33 3, // U_EUROPEAN_NUMBER (2) => DIRECTIONALITY_EUROPEAN_NUMBER (3)
34 4, // U_EUROPEAN_NUMBER_SEPARATOR (3) => DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR (4)
35 5, // U_EUROPEAN_NUMBER_TERMINATOR (4) => DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR (5)
36 6, // U_ARABIC_NUMBER (5) => DIRECTIONALITY_ARABIC_NUMBER (6)
37 7, // U_COMMON_NUMBER_SEPARATOR (6) => DIRECTIONALITY_COMMON_NUMBER_SEPARATOR (7)
38 10, // U_BLOCK_SEPARATOR (7) => DIRECTIONALITY_PARAGRAPH_SEPARATOR (10)
39 11, // U_SEGMENT_SEPARATOR (8) => DIRECTIONALITY_SEGMENT_SEPARATOR (11)
40 12, // U_WHITE_SPACE_NEUTRAL (9) => DIRECTIONALITY_WHITESPACE (12)
41 13, // U_OTHER_NEUTRAL (10) => DIRECTIONALITY_OTHER_NEUTRALS (13)
42 14, // U_LEFT_TO_RIGHT_EMBEDDING (11) => DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING (14)
43 15, // U_LEFT_TO_RIGHT_OVERRIDE (12) => DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE (15)
44 2, // U_RIGHT_TO_LEFT_ARABIC (13) => DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC (2)
45 16, // U_RIGHT_TO_LEFT_EMBEDDING (14) => DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING (16)
46 17, // U_RIGHT_TO_LEFT_OVERRIDE (15) => DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE (17)
47 18, // U_POP_DIRECTIONAL_FORMAT (16) => DIRECTIONALITY_POP_DIRECTIONAL_FORMAT (18)
48 8, // U_DIR_NON_SPACING_MARK (17) => DIRECTIONALITY_NONSPACING_MARK (8)
49 9, // U_BOUNDARY_NEUTRAL (18) => DIRECTIONALITY_BOUNDARY_NEUTRAL (9)
54 static void getDirectionalities(JNIEnv* env, jobject obj, jcharArray srcArray, jbyteArray destArray, int count)
56 ScopedCharArrayRO src(env, srcArray);
57 if (src.get() == NULL) {
60 ScopedByteArrayRW dest(env, destArray);
61 if (dest.get() == NULL) {
65 if (env->GetArrayLength(srcArray) < count || env->GetArrayLength(destArray) < count) {
66 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
70 for (int i = 0; i < count; i++) {
71 if (src[i] >= 0xD800 && src[i] <= 0xDBFF &&
73 src[i + 1] >= 0xDC00 && src[i + 1] <= 0xDFFF) {
74 int c = 0x00010000 + ((src[i] - 0xD800) << 10) +
76 int dir = u_charDirection(c);
77 if (dir < 0 || dir >= U_CHAR_DIRECTION_COUNT)
78 dir = PROPERTY_UNDEFINED;
80 dir = directionality_map[dir];
86 int dir = u_charDirection(c);
87 if (dir < 0 || dir >= U_CHAR_DIRECTION_COUNT)
88 dest[i] = PROPERTY_UNDEFINED;
90 dest[i] = directionality_map[dir];
95 static jint getEastAsianWidth(JNIEnv* env, jobject obj, jchar input)
97 int width = u_getIntPropertyValue(input, UCHAR_EAST_ASIAN_WIDTH);
98 if (width < 0 || width >= U_EA_COUNT)
99 width = PROPERTY_UNDEFINED;
104 static void getEastAsianWidths(JNIEnv* env, jobject obj, jcharArray srcArray,
105 int start, int count, jbyteArray destArray)
107 ScopedCharArrayRO src(env, srcArray);
108 if (src.get() == NULL) {
111 ScopedByteArrayRW dest(env, destArray);
112 if (dest.get() == NULL) {
116 if (start < 0 || start > start + count
117 || env->GetArrayLength(srcArray) < (start + count)
118 || env->GetArrayLength(destArray) < count) {
119 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
123 for (int i = 0; i < count; i++) {
124 const int srci = start + i;
125 if (src[srci] >= 0xD800 && src[srci] <= 0xDBFF &&
127 src[srci + 1] >= 0xDC00 && src[srci + 1] <= 0xDFFF) {
128 int c = 0x00010000 + ((src[srci] - 0xD800) << 10) +
129 (src[srci + 1] & 0x3FF);
130 int width = u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH);
131 if (width < 0 || width >= U_EA_COUNT)
132 width = PROPERTY_UNDEFINED;
138 int width = u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH);
139 if (width < 0 || width >= U_EA_COUNT)
140 width = PROPERTY_UNDEFINED;
147 static jboolean mirror(JNIEnv* env, jobject obj, jcharArray charArray, int start, int count)
149 ScopedCharArrayRW data(env, charArray);
150 if (data.get() == NULL) {
154 if (start < 0 || start > start + count
155 || env->GetArrayLength(charArray) < start + count) {
156 jniThrowException(env, "java/lang/ArrayIndexOutOfBoundsException", NULL);
161 for (int i = start; i < start + count; i++) {
162 // XXX this thinks it knows that surrogates are never mirrored
165 int c2 = u_charMirror(c1);
175 static jchar getMirror(JNIEnv* env, jobject obj, jchar c)
177 return u_charMirror(c);
180 static JNINativeMethod gMethods[] = {
181 { "getDirectionalities", "([C[BI)V",
182 (void*) getDirectionalities },
183 { "getEastAsianWidth", "(C)I",
184 (void*) getEastAsianWidth },
185 { "getEastAsianWidths", "([CII[B)V",
186 (void*) getEastAsianWidths },
187 { "mirror", "([CII)Z",
189 { "getMirror", "(C)C",
193 int register_android_text_AndroidCharacter(JNIEnv* env)
195 return AndroidRuntime::registerNativeMethods(env, "android/text/AndroidCharacter",
196 gMethods, NELEM(gMethods));