| /* |
| * 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 "unicode/uscript.h" |
| #include <math.h> |
| #include <stdio.h> // For BUFSIZ |
| #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 jstring 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 jint Character_getNumericValueImpl(JNIEnv*, 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); |
| } |
| |
| 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) { |
| 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) { |
| 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_unicodeBlockForName(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_unicodeBlockForCodePoint(JNIEnv*, jclass, jint codePoint) { |
| return ublock_getCode(codePoint); |
| } |
| |
| static int Character_unicodeScriptForName(JNIEnv* env, jclass, jstring javaScriptName) { |
| ScopedUtfChars scriptName(env, javaScriptName); |
| if (scriptName.c_str() == NULL) { |
| return -1; |
| } |
| |
| return u_getPropertyValueEnum(UCHAR_SCRIPT, scriptName.c_str()); |
| } |
| |
| static int Character_unicodeScriptForCodePoint(JNIEnv*, jclass, jint codePoint) { |
| UErrorCode status = U_ZERO_ERROR; |
| const UScriptCode script = uscript_getScript(codePoint, &status); |
| if (status != U_ZERO_ERROR) { |
| return -1; |
| } |
| |
| return script; |
| } |
| |
| static jboolean Character_isAlphabetic(JNIEnv*, jclass, jint codePoint) { |
| return u_hasBinaryProperty(codePoint, UCHAR_ALPHABETIC); |
| } |
| |
| static jboolean Character_isIdeographic(JNIEnv*, jclass, jint codePoint) { |
| return u_hasBinaryProperty(codePoint, UCHAR_IDEOGRAPHIC); |
| } |
| |
| 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, isAlphabetic, "!(I)Z"), |
| NATIVE_METHOD(Character, isDefinedImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isDigitImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isIdentifierIgnorableImpl, "!(I)Z"), |
| NATIVE_METHOD(Character, isIdeographic, "!(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"), |
| NATIVE_METHOD(Character, unicodeBlockForName, "(Ljava/lang/String;)I"), |
| NATIVE_METHOD(Character, unicodeBlockForCodePoint, "!(I)I"), |
| NATIVE_METHOD(Character, unicodeScriptForName, "(Ljava/lang/String;)I"), |
| NATIVE_METHOD(Character, unicodeScriptForCodePoint, "!(I)I"), |
| }; |
| void register_java_lang_Character(JNIEnv* env) { |
| jniRegisterNativeMethods(env, "java/lang/Character", gMethods, NELEM(gMethods)); |
| } |