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/*
* Copyright (C) 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 "Character"
#include "JNIHelp.h"
#include "JniConstants.h"
#include "ScopedUtfChars.h"
#include "unicode/uchar.h"
#include <math.h>
#include <stdlib.h>
static jint Character_digitImpl(JNIEnv*, jclass, jint codePoint, jint radix) {
return u_digit(codePoint, radix);
}
static jint Character_getTypeImpl(JNIEnv*, jclass, jint codePoint) {
return u_charType(codePoint);
}
static jbyte Character_getDirectionalityImpl(JNIEnv*, jclass, jint codePoint) {
return u_charDirection(codePoint);
}
static jboolean Character_isMirroredImpl(JNIEnv*, jclass, jint codePoint) {
return u_isMirrored(codePoint);
}
static jint Character_getNumericValueImpl(JNIEnv*, jclass, jint codePoint){
// The letters A-Z in their uppercase ('\u0041' through '\u005A'),
// lowercase ('\u0061' through '\u007A'),
// and full width variant ('\uFF21' through '\uFF3A'
// and '\uFF41' through '\uFF5A') forms
// have numeric values from 10 through 35. This is independent of the
// Unicode specification, which does not assign numeric values to these
// char values.
if (codePoint >= 0x41 && codePoint <= 0x5A) {
return codePoint - 0x37;
}
if (codePoint >= 0x61 && codePoint <= 0x7A) {
return codePoint - 0x57;
}
if (codePoint >= 0xFF21 && codePoint <= 0xFF3A) {
return codePoint - 0xFF17;
}
if (codePoint >= 0xFF41 && codePoint <= 0xFF5A) {
return codePoint - 0xFF37;
}
double result = u_getNumericValue(codePoint);
if (result == U_NO_NUMERIC_VALUE) {
return -1;
} else if (result < 0 || floor(result + 0.5) != result) {
return -2;
}
return result;
}
static jboolean Character_isDefinedImpl(JNIEnv*, jclass, jint codePoint) {
return u_isdefined(codePoint);
}
static jboolean Character_isDigitImpl(JNIEnv*, jclass, jint codePoint) {
return u_isdigit(codePoint);
}
static jboolean Character_isIdentifierIgnorableImpl(JNIEnv*, jclass, jint codePoint) {
// Java also returns true for U+0085 Next Line (it omits U+0085 from whitespace ISO controls).
if(codePoint == 0x0085) {
return JNI_TRUE;
}
return u_isIDIgnorable(codePoint);
}
static jboolean Character_isLetterImpl(JNIEnv*, jclass, jint codePoint) {
return u_isalpha(codePoint);
}
static jboolean Character_isLetterOrDigitImpl(JNIEnv*, jclass, jint codePoint) {
return u_isalnum(codePoint);
}
static jboolean Character_isSpaceCharImpl(JNIEnv*, jclass, jint codePoint) {
return u_isJavaSpaceChar(codePoint);
}
static jboolean Character_isTitleCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_istitle(codePoint);
}
static jboolean Character_isUnicodeIdentifierPartImpl(JNIEnv*, jclass, jint codePoint) {
return u_isIDPart(codePoint);
}
static jboolean Character_isUnicodeIdentifierStartImpl(JNIEnv*, jclass, jint codePoint) {
return u_isIDStart(codePoint);
}
static jboolean Character_isWhitespaceImpl(JNIEnv*, jclass, jint codePoint) {
// Java omits U+0085
if(codePoint == 0x0085) {
return JNI_FALSE;
}
return u_isWhitespace(codePoint);
}
static jint Character_toLowerCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_tolower(codePoint);
}
static jint Character_toTitleCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_totitle(codePoint);
}
static jint Character_toUpperCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_toupper(codePoint);
}
static jboolean Character_isUpperCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_isupper(codePoint);
}
static jboolean Character_isLowerCaseImpl(JNIEnv*, jclass, jint codePoint) {
return u_islower(codePoint);
}
static int Character_forNameImpl(JNIEnv* env, jclass, jstring javaBlockName) {
ScopedUtfChars blockName(env, javaBlockName);
if (blockName.c_str() == NULL) {
return 0;
}
return u_getPropertyValueEnum(UCHAR_BLOCK, blockName.c_str());
}
static int Character_ofImpl(JNIEnv*, jclass, jint codePoint) {
return ublock_getCode(codePoint);
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Character, digitImpl, "(II)I"),
NATIVE_METHOD(Character, forNameImpl, "(Ljava/lang/String;)I"),
NATIVE_METHOD(Character, getDirectionalityImpl, "(I)B"),
NATIVE_METHOD(Character, getNumericValueImpl, "(I)I"),
NATIVE_METHOD(Character, getTypeImpl, "(I)I"),
NATIVE_METHOD(Character, isDefinedImpl, "(I)Z"),
NATIVE_METHOD(Character, isDigitImpl, "(I)Z"),
NATIVE_METHOD(Character, isIdentifierIgnorableImpl, "(I)Z"),
NATIVE_METHOD(Character, isLetterImpl, "(I)Z"),
NATIVE_METHOD(Character, isLetterOrDigitImpl, "(I)Z"),
NATIVE_METHOD(Character, isLowerCaseImpl, "(I)Z"),
NATIVE_METHOD(Character, isMirroredImpl, "(I)Z"),
NATIVE_METHOD(Character, isSpaceCharImpl, "(I)Z"),
NATIVE_METHOD(Character, isTitleCaseImpl, "(I)Z"),
NATIVE_METHOD(Character, isUnicodeIdentifierPartImpl, "(I)Z"),
NATIVE_METHOD(Character, isUnicodeIdentifierStartImpl, "(I)Z"),
NATIVE_METHOD(Character, isUpperCaseImpl, "(I)Z"),
NATIVE_METHOD(Character, isWhitespaceImpl, "(I)Z"),
NATIVE_METHOD(Character, ofImpl, "(I)I"),
NATIVE_METHOD(Character, toLowerCaseImpl, "(I)I"),
NATIVE_METHOD(Character, toTitleCaseImpl, "(I)I"),
NATIVE_METHOD(Character, toUpperCaseImpl, "(I)I"),
};
int register_java_lang_Character(JNIEnv* env) {
return jniRegisterNativeMethods(env, "java/lang/Character", gMethods, NELEM(gMethods));
}
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