| /* |
| * Copyright 2015 Google Inc. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Google designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Google in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "jni.h" |
| #include "jvm.h" |
| #include "JNIHelp.h" |
| #include "unicode/uchar.h" |
| #include "unicode/uscript.h" |
| #include <math.h> |
| #include <stdio.h> // For BUFSIZ |
| |
| #define NATIVE_METHOD(className, functionName, signature) \ |
| { #functionName, signature, (void*)(className ## _ ## functionName) } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_islower(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isupper(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_istitle(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isDigitImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isdigit(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isLetterImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isalpha(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isLetterOrDigitImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isalnum(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isAlphabeticImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_hasBinaryProperty(codePoint, UCHAR_ALPHABETIC); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isIdeographicImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_hasBinaryProperty(codePoint, UCHAR_IDEOGRAPHIC); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_getTypeImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_charType(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isUnicodeIdentifierStartImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isIDStart(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isUnicodeIdentifierPartImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isIDPart(codePoint); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_toLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_tolower(codePoint); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_toUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_toupper(codePoint); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_toTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_totitle(codePoint); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_digitImpl(JNIEnv* env, jclass, jint codePoint, jint radix) { |
| return u_digit(codePoint, radix); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Character_getNumericValueImpl(JNIEnv* env, jclass, jint codePoint) { |
| 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 static_cast<jint>(result); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isWhitespaceImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isWhitespace(codePoint); |
| } |
| |
| JNIEXPORT jbyte JNICALL |
| Character_getDirectionalityImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_charDirection(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isMirroredImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isMirrored(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isDefinedImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isdefined(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isIdentifierIgnorableImpl(JNIEnv* env, jclass, jint codePoint) { |
| return u_isIDIgnorable(codePoint); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Character_isSpaceCharImpl(JNIEnv*, jclass, jint codePoint) { |
| return u_isJavaSpaceChar(codePoint); |
| } |
| |
| JNIEXPORT jstring JNICALL |
| Character_getNameImpl(JNIEnv* env, jclass, jint codePoint) { |
| // U_UNICODE_CHAR_NAME gives us the modern names for characters. For control characters, |
| // we need U_EXTENDED_CHAR_NAME to get "NULL" rather than "BASIC LATIN 0" and so on. |
| // We could just use U_EXTENDED_CHAR_NAME except that it returns strings for characters |
| // that aren't unassigned but that don't have names, and those strings aren't in the form |
| // Java specifies. |
| bool isControl = (codePoint <= 0x1f || (codePoint >= 0x7f && codePoint <= 0x9f)); |
| UCharNameChoice nameType = isControl ? U_EXTENDED_CHAR_NAME : U_UNICODE_CHAR_NAME; |
| UErrorCode status = U_ZERO_ERROR; |
| char buf[BUFSIZ]; // TODO: is there a more sensible upper bound? |
| int32_t byteCount = u_charName(codePoint, nameType, &buf[0], sizeof(buf), &status); |
| return (U_FAILURE(status) || byteCount == 0) ? NULL : env->NewStringUTF(buf); |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(Character, digitImpl, "!(II)I"), |
| NATIVE_METHOD(Character, getDirectionalityImpl, "!(I)B"), |
| NATIVE_METHOD(Character, getNameImpl, "(I)Ljava/lang/String;"), |
| NATIVE_METHOD(Character, getNumericValueImpl, "!(I)I"), |
| NATIVE_METHOD(Character, getTypeImpl, "!(I)I"), |
| NATIVE_METHOD(Character, isAlphabeticImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isDefinedImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isDigitImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isIdentifierIgnorableImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isIdeographicImpl, "!(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, toLowerCaseImpl, "!(I)I"), |
| NATIVE_METHOD(Character, toTitleCaseImpl, "!(I)I"), |
| NATIVE_METHOD(Character, toUpperCaseImpl, "!(I)I"), |
| }; |
| |
| void register_java_lang_Character(JNIEnv* env) { |
| jniRegisterNativeMethods(env, "java/lang/Character", gMethods, NELEM(gMethods)); |
| } |