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/*
* Copyright 2006 The Android Open Source Project
*
* Internal native functions. All of the functions defined here make
* direct use of VM functions or data structures, so they can't be written
* with JNI and shouldn't really be in a shared library.
*
* All functions here either complete quickly or are used to enter a wait
* state, so we don't set the thread status to THREAD_NATIVE when executing
* these methods. This means that the GC will wait for these functions
* to finish. DO NOT perform long operations or blocking I/O in here.
*
* In some cases we're following the division of labor defined by GNU
* ClassPath, e.g. java.lang.Thread has "Thread" and "VMThread", with
* the VM-specific behavior isolated in VMThread.
*/
#include "JNIHelp.h"
#include "AndroidSystemNatives.h"
#include "unicode/uchar.h"
#include <stdlib.h>
#include <math.h>
static jint digitImpl(JNIEnv *env, jclass clazz, jint codePoint, jint radix) {
return u_digit(codePoint, radix);
}
static jint getTypeImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_charType(codePoint);
}
static jbyte getDirectionalityImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_charDirection (codePoint);
}
static jboolean isMirroredImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isMirrored (codePoint);
}
static jint getNumericValueImpl(JNIEnv *env, jclass clazz, 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 isDefinedValueImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isdefined(codePoint);
}
static jboolean isDigitImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isdigit(codePoint);
}
static jboolean isIdentifierIgnorableImpl(JNIEnv *env, jclass clazz,
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 isLetterImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isalpha(codePoint);
}
static jboolean isLetterOrDigitImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isalnum(codePoint);
}
static jboolean isSpaceCharImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isJavaSpaceChar(codePoint);
}
static jboolean isTitleCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_istitle(codePoint);
}
static jboolean isUnicodeIdentifierPartImpl(JNIEnv *env, jclass clazz,
jint codePoint) {
return u_isIDPart(codePoint);
}
static jboolean isUnicodeIdentifierStartImpl(JNIEnv *env, jclass clazz,
jint codePoint) {
return u_isIDStart(codePoint);
}
static jboolean isWhitespaceImpl(JNIEnv *env, jclass clazz, jint codePoint) {
// Java omits U+0085
if(codePoint == 0x0085) {
return JNI_FALSE;
}
return u_isWhitespace(codePoint);
}
static jint toLowerCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_tolower(codePoint);
}
static jint toTitleCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_totitle(codePoint);
}
static jint toUpperCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_toupper(codePoint);
}
static jboolean isUpperCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_isupper(codePoint);
}
static jboolean isLowerCaseImpl(JNIEnv *env, jclass clazz, jint codePoint) {
return u_islower(codePoint);
}
static int forName(JNIEnv *env, jclass clazz, jstring blockName) {
const char *bName = (*env)->GetStringUTFChars(env, blockName, NULL);
int result = u_getPropertyValueEnum(UCHAR_BLOCK, bName);
(*env)->ReleaseStringUTFChars(env, blockName, bName);
return result;
}
static int codeBlock(JNIEnv *env, jclass clazz, jint codePoint) {
return ublock_getCode(codePoint);
}
/*
* JNI registration
*/
static JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
{ "digitImpl", "(II)I", (void*) digitImpl },
{ "getTypeImpl", "(I)I", (void*) getTypeImpl },
{ "getDirectionalityImpl", "(I)B", (void*) getDirectionalityImpl },
{ "isMirroredImpl", "(I)Z", (void*) isMirroredImpl },
{ "getNumericValueImpl", "(I)I", (void*) getNumericValueImpl },
{ "isDefinedValueImpl", "(I)Z", (void*) isDefinedValueImpl },
{ "isDigitImpl", "(I)Z", (void*) isDigitImpl },
{ "isIdentifierIgnorableImpl", "(I)Z", (void*) isIdentifierIgnorableImpl },
{ "isLetterImpl", "(I)Z", (void*) isLetterImpl },
{ "isLetterOrDigitImpl", "(I)Z", (void*) isLetterOrDigitImpl },
{ "isSpaceCharImpl", "(I)Z", (void*) isSpaceCharImpl },
{ "isTitleCaseImpl", "(I)Z", (void*) isTitleCaseImpl },
{ "isUnicodeIdentifierPartImpl", "(I)Z",
(void*) isUnicodeIdentifierPartImpl },
{ "isUnicodeIdentifierStartImpl", "(I)Z",
(void*) isUnicodeIdentifierStartImpl },
{ "isWhitespaceImpl", "(I)Z", (void*) isWhitespaceImpl },
{ "toLowerCaseImpl", "(I)I", (void*) toLowerCaseImpl },
{ "toTitleCaseImpl", "(I)I", (void*) toTitleCaseImpl },
{ "toUpperCaseImpl", "(I)I", (void*) toUpperCaseImpl },
{ "isUpperCaseImpl", "(I)Z", (void*) isUpperCaseImpl },
{ "isLowerCaseImpl", "(I)Z", (void*) isLowerCaseImpl },
{ "forname", "(Ljava/lang/String;)I", (void*) forName },
{ "codeblock", "(I)I", (void*) codeBlock }
};
int register_com_ibm_icu4jni_lang_UCharacter(JNIEnv *env) {
return jniRegisterNativeMethods(env, "com/ibm/icu4jni/lang/UCharacter",
gMethods, NELEM(gMethods));
}
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