1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Google designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Google in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 */ 20 21 #include "jni.h" 22 #include "jvm.h" 23 #include <nativehelper/JNIHelp.h> 24 #include "nativehelper/jni_macros.h" 25 #include "unicode/uchar.h" 26 #include "unicode/uscript.h" 27 #include <math.h> 28 #include <stdio.h> // For BUFSIZ 29 30 JNIEXPORT jboolean JNICALL 31 Character_isLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { 32 return u_islower(codePoint); 33 } 34 35 JNIEXPORT jboolean JNICALL 36 Character_isUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { 37 return u_isupper(codePoint); 38 } 39 40 JNIEXPORT jboolean JNICALL 41 Character_isTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { 42 return u_istitle(codePoint); 43 } 44 45 JNIEXPORT jboolean JNICALL 46 Character_isDigitImpl(JNIEnv* env, jclass, jint codePoint) { 47 return u_isdigit(codePoint); 48 } 49 50 JNIEXPORT jboolean JNICALL 51 Character_isLetterImpl(JNIEnv* env, jclass, jint codePoint) { 52 return u_isalpha(codePoint); 53 } 54 55 JNIEXPORT jboolean JNICALL 56 Character_isLetterOrDigitImpl(JNIEnv* env, jclass, jint codePoint) { 57 return u_isalnum(codePoint); 58 } 59 60 JNIEXPORT jboolean JNICALL 61 Character_isAlphabeticImpl(JNIEnv* env, jclass, jint codePoint) { 62 return u_hasBinaryProperty(codePoint, UCHAR_ALPHABETIC); 63 } 64 65 JNIEXPORT jboolean JNICALL 66 Character_isIdeographicImpl(JNIEnv* env, jclass, jint codePoint) { 67 return u_hasBinaryProperty(codePoint, UCHAR_IDEOGRAPHIC); 68 } 69 70 JNIEXPORT jint JNICALL 71 Character_getTypeImpl(JNIEnv* env, jclass, jint codePoint) { 72 return u_charType(codePoint); 73 } 74 75 JNIEXPORT jboolean JNICALL 76 Character_isUnicodeIdentifierStartImpl(JNIEnv* env, jclass, jint codePoint) { 77 return u_isIDStart(codePoint); 78 } 79 80 JNIEXPORT jboolean JNICALL 81 Character_isUnicodeIdentifierPartImpl(JNIEnv* env, jclass, jint codePoint) { 82 return u_isIDPart(codePoint); 83 } 84 85 JNIEXPORT jint JNICALL 86 Character_toLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { 87 return u_tolower(codePoint); 88 } 89 90 JNIEXPORT jint JNICALL 91 Character_toUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { 92 return u_toupper(codePoint); 93 } 94 95 JNIEXPORT jint JNICALL 96 Character_toTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { 97 return u_totitle(codePoint); 98 } 99 100 JNIEXPORT jint JNICALL 101 Character_digitImpl(JNIEnv* env, jclass, jint codePoint, jint radix) { 102 return u_digit(codePoint, radix); 103 } 104 105 JNIEXPORT jint JNICALL 106 Character_getNumericValueImpl(JNIEnv* env, jclass, jint codePoint) { 107 double result = u_getNumericValue(codePoint); 108 if (result == U_NO_NUMERIC_VALUE) { 109 return -1; 110 } else if (result < 0 || floor(result + 0.5) != result) { 111 return -2; 112 } 113 return static_cast<jint>(result); 114 } 115 116 JNIEXPORT jboolean JNICALL 117 Character_isWhitespaceImpl(JNIEnv* env, jclass, jint codePoint) { 118 return u_isWhitespace(codePoint); 119 } 120 121 JNIEXPORT jbyte JNICALL 122 Character_getDirectionalityImpl(JNIEnv* env, jclass, jint codePoint) { 123 return u_charDirection(codePoint); 124 } 125 126 JNIEXPORT jboolean JNICALL 127 Character_isMirroredImpl(JNIEnv* env, jclass, jint codePoint) { 128 return u_isMirrored(codePoint); 129 } 130 131 JNIEXPORT jboolean JNICALL 132 Character_isDefinedImpl(JNIEnv* env, jclass, jint codePoint) { 133 return u_isdefined(codePoint); 134 } 135 136 JNIEXPORT jboolean JNICALL 137 Character_isIdentifierIgnorableImpl(JNIEnv* env, jclass, jint codePoint) { 138 return u_isIDIgnorable(codePoint); 139 } 140 141 JNIEXPORT jboolean JNICALL 142 Character_isSpaceCharImpl(JNIEnv*, jclass, jint codePoint) { 143 return u_isJavaSpaceChar(codePoint); 144 } 145 146 JNIEXPORT jstring JNICALL 147 Character_getNameImpl(JNIEnv* env, jclass, jint codePoint) { 148 // U_UNICODE_CHAR_NAME gives us the modern names for characters. For control characters, 149 // we need U_EXTENDED_CHAR_NAME to get "NULL" rather than "BASIC LATIN 0" and so on. 150 // We could just use U_EXTENDED_CHAR_NAME except that it returns strings for characters 151 // that aren't unassigned but that don't have names, and those strings aren't in the form 152 // Java specifies. 153 bool isControl = (codePoint <= 0x1f || (codePoint >= 0x7f && codePoint <= 0x9f)); 154 UCharNameChoice nameType = isControl ? U_EXTENDED_CHAR_NAME : U_UNICODE_CHAR_NAME; 155 UErrorCode status = U_ZERO_ERROR; 156 char buf[BUFSIZ]; // TODO: is there a more sensible upper bound? 157 int32_t byteCount = u_charName(codePoint, nameType, &buf[0], sizeof(buf), &status); 158 return (U_FAILURE(status) || byteCount == 0) ? NULL : env->NewStringUTF(buf); 159 } 160 161 static JNINativeMethod gMethods[] = { 162 FAST_NATIVE_METHOD(Character, digitImpl, "(II)I"), 163 FAST_NATIVE_METHOD(Character, getDirectionalityImpl, "(I)B"), 164 NATIVE_METHOD(Character, getNameImpl, "(I)Ljava/lang/String;"), 165 FAST_NATIVE_METHOD(Character, getNumericValueImpl, "(I)I"), 166 FAST_NATIVE_METHOD(Character, getTypeImpl, "(I)I"), 167 FAST_NATIVE_METHOD(Character, isAlphabeticImpl, "(I)Z"), 168 FAST_NATIVE_METHOD(Character, isDefinedImpl, "(I)Z"), 169 FAST_NATIVE_METHOD(Character, isDigitImpl, "(I)Z"), 170 FAST_NATIVE_METHOD(Character, isIdentifierIgnorableImpl, "(I)Z"), 171 FAST_NATIVE_METHOD(Character, isIdeographicImpl, "(I)Z"), 172 FAST_NATIVE_METHOD(Character, isLetterImpl, "(I)Z"), 173 FAST_NATIVE_METHOD(Character, isLetterOrDigitImpl, "(I)Z"), 174 FAST_NATIVE_METHOD(Character, isLowerCaseImpl, "(I)Z"), 175 FAST_NATIVE_METHOD(Character, isMirroredImpl, "(I)Z"), 176 FAST_NATIVE_METHOD(Character, isSpaceCharImpl, "(I)Z"), 177 FAST_NATIVE_METHOD(Character, isTitleCaseImpl, "(I)Z"), 178 FAST_NATIVE_METHOD(Character, isUnicodeIdentifierPartImpl, "(I)Z"), 179 FAST_NATIVE_METHOD(Character, isUnicodeIdentifierStartImpl, "(I)Z"), 180 FAST_NATIVE_METHOD(Character, isUpperCaseImpl, "(I)Z"), 181 FAST_NATIVE_METHOD(Character, isWhitespaceImpl, "(I)Z"), 182 FAST_NATIVE_METHOD(Character, toLowerCaseImpl, "(I)I"), 183 FAST_NATIVE_METHOD(Character, toTitleCaseImpl, "(I)I"), 184 FAST_NATIVE_METHOD(Character, toUpperCaseImpl, "(I)I"), 185 }; 186 187 void register_java_lang_Character(JNIEnv* env) { 188 jniRegisterNativeMethods(env, "java/lang/Character", gMethods, NELEM(gMethods)); 189 } 190
