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/* //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 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));
}
}
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