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 "JNIHelp.h" 24 #include "unicode/uchar.h" 25 #include "unicode/uscript.h" 26 #include <math.h> 27 #include <stdio.h> // For BUFSIZ 28 29 #define NATIVE_METHOD(className, functionName, signature) \ 30 { #functionName, signature, (void*)(className ## _ ## functionName) } 31 32 JNIEXPORT jboolean JNICALL 33 Character_isLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { 34 return u_islower(codePoint); 35 } 36 37 JNIEXPORT jboolean JNICALL 38 Character_isUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { 39 return u_isupper(codePoint); 40 } 41 42 JNIEXPORT jboolean JNICALL 43 Character_isTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { 44 return u_istitle(codePoint); 45 } 46 47 JNIEXPORT jboolean JNICALL 48 Character_isDigitImpl(JNIEnv* env, jclass, jint codePoint) { 49 return u_isdigit(codePoint); 50 } 51 52 JNIEXPORT jboolean JNICALL 53 Character_isLetterImpl(JNIEnv* env, jclass, jint codePoint) { 54 return u_isalpha(codePoint); 55 } 56 57 JNIEXPORT jboolean JNICALL 58 Character_isLetterOrDigitImpl(JNIEnv* env, jclass, jint codePoint) { 59 return u_isalnum(codePoint); 60 } 61 62 JNIEXPORT jboolean JNICALL 63 Character_isAlphabeticImpl(JNIEnv* env, jclass, jint codePoint) { 64 return u_hasBinaryProperty(codePoint, UCHAR_ALPHABETIC); 65 } 66 67 JNIEXPORT jboolean JNICALL 68 Character_isIdeographicImpl(JNIEnv* env, jclass, jint codePoint) { 69 return u_hasBinaryProperty(codePoint, UCHAR_IDEOGRAPHIC); 70 } 71 72 JNIEXPORT jint JNICALL 73 Character_getTypeImpl(JNIEnv* env, jclass, jint codePoint) { 74 return u_charType(codePoint); 75 } 76 77 JNIEXPORT jboolean JNICALL 78 Character_isUnicodeIdentifierStartImpl(JNIEnv* env, jclass, jint codePoint) { 79 return u_isIDStart(codePoint); 80 } 81 82 JNIEXPORT jboolean JNICALL 83 Character_isUnicodeIdentifierPartImpl(JNIEnv* env, jclass, jint codePoint) { 84 return u_isIDPart(codePoint); 85 } 86 87 JNIEXPORT jint JNICALL 88 Character_toLowerCaseImpl(JNIEnv* env, jclass, jint codePoint) { 89 return u_tolower(codePoint); 90 } 91 92 JNIEXPORT jint JNICALL 93 Character_toUpperCaseImpl(JNIEnv* env, jclass, jint codePoint) { 94 return u_toupper(codePoint); 95 } 96 97 JNIEXPORT jint JNICALL 98 Character_toTitleCaseImpl(JNIEnv* env, jclass, jint codePoint) { 99 return u_totitle(codePoint); 100 } 101 102 JNIEXPORT jint JNICALL 103 Character_digitImpl(JNIEnv* env, jclass, jint codePoint, jint radix) { 104 return u_digit(codePoint, radix); 105 } 106 107 JNIEXPORT jint JNICALL 108 Character_getNumericValueImpl(JNIEnv* env, jclass, jint codePoint) { 109 double result = u_getNumericValue(codePoint); 110 if (result == U_NO_NUMERIC_VALUE) { 111 return -1; 112 } else if (result < 0 || floor(result + 0.5) != result) { 113 return -2; 114 } 115 return static_cast<jint>(result); 116 } 117 118 JNIEXPORT jboolean JNICALL 119 Character_isWhitespaceImpl(JNIEnv* env, jclass, jint codePoint) { 120 return u_isWhitespace(codePoint); 121 } 122 123 JNIEXPORT jbyte JNICALL 124 Character_getDirectionalityImpl(JNIEnv* env, jclass, jint codePoint) { 125 return u_charDirection(codePoint); 126 } 127 128 JNIEXPORT jboolean JNICALL 129 Character_isMirroredImpl(JNIEnv* env, jclass, jint codePoint) { 130 return u_isMirrored(codePoint); 131 } 132 133 JNIEXPORT jboolean JNICALL 134 Character_isDefinedImpl(JNIEnv* env, jclass, jint codePoint) { 135 return u_isdefined(codePoint); 136 } 137 138 JNIEXPORT jboolean JNICALL 139 Character_isIdentifierIgnorableImpl(JNIEnv* env, jclass, jint codePoint) { 140 return u_isIDIgnorable(codePoint); 141 } 142 143 JNIEXPORT jboolean JNICALL 144 Character_isSpaceCharImpl(JNIEnv*, jclass, jint codePoint) { 145 return u_isJavaSpaceChar(codePoint); 146 } 147 148 JNIEXPORT jstring JNICALL 149 Character_getNameImpl(JNIEnv* env, jclass, jint codePoint) { 150 // U_UNICODE_CHAR_NAME gives us the modern names for characters. For control characters, 151 // we need U_EXTENDED_CHAR_NAME to get "NULL" rather than "BASIC LATIN 0" and so on. 152 // We could just use U_EXTENDED_CHAR_NAME except that it returns strings for characters 153 // that aren't unassigned but that don't have names, and those strings aren't in the form 154 // Java specifies. 155 bool isControl = (codePoint <= 0x1f || (codePoint >= 0x7f && codePoint <= 0x9f)); 156 UCharNameChoice nameType = isControl ? U_EXTENDED_CHAR_NAME : U_UNICODE_CHAR_NAME; 157 UErrorCode status = U_ZERO_ERROR; 158 char buf[BUFSIZ]; // TODO: is there a more sensible upper bound? 159 int32_t byteCount = u_charName(codePoint, nameType, &buf[0], sizeof(buf), &status); 160 return (U_FAILURE(status) || byteCount == 0) ? NULL : env->NewStringUTF(buf); 161 } 162 163 static JNINativeMethod gMethods[] = { 164 NATIVE_METHOD(Character, digitImpl, "!(II)I"), 165 NATIVE_METHOD(Character, getDirectionalityImpl, "!(I)B"), 166 NATIVE_METHOD(Character, getNameImpl, "(I)Ljava/lang/String;"), 167 NATIVE_METHOD(Character, getNumericValueImpl, "!(I)I"), 168 NATIVE_METHOD(Character, getTypeImpl, "!(I)I"), 169 NATIVE_METHOD(Character, isAlphabeticImpl, "!(I)Z"), 170 NATIVE_METHOD(Character, isDefinedImpl, "!(I)Z"), 171 NATIVE_METHOD(Character, isDigitImpl, "!(I)Z"), 172 NATIVE_METHOD(Character, isIdentifierIgnorableImpl, "!(I)Z"), 173 NATIVE_METHOD(Character, isIdeographicImpl, "!(I)Z"), 174 NATIVE_METHOD(Character, isLetterImpl, "!(I)Z"), 175 NATIVE_METHOD(Character, isLetterOrDigitImpl, "!(I)Z"), 176 NATIVE_METHOD(Character, isLowerCaseImpl, "!(I)Z"), 177 NATIVE_METHOD(Character, isMirroredImpl, "!(I)Z"), 178 NATIVE_METHOD(Character, isSpaceCharImpl, "!(I)Z"), 179 NATIVE_METHOD(Character, isTitleCaseImpl, "!(I)Z"), 180 NATIVE_METHOD(Character, isUnicodeIdentifierPartImpl, "!(I)Z"), 181 NATIVE_METHOD(Character, isUnicodeIdentifierStartImpl, "!(I)Z"), 182 NATIVE_METHOD(Character, isUpperCaseImpl, "!(I)Z"), 183 NATIVE_METHOD(Character, isWhitespaceImpl, "!(I)Z"), 184 NATIVE_METHOD(Character, toLowerCaseImpl, "!(I)I"), 185 NATIVE_METHOD(Character, toTitleCaseImpl, "!(I)I"), 186 NATIVE_METHOD(Character, toUpperCaseImpl, "!(I)I"), 187 }; 188 189 void register_java_lang_Character(JNIEnv* env) { 190 jniRegisterNativeMethods(env, "java/lang/Character", gMethods, NELEM(gMethods)); 191 } 192
