ASCII.java revision 2362
4632N/A/*
4767N/A * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
4632N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4632N/A *
4632N/A * This code is free software; you can redistribute it and/or modify it
4632N/A * under the terms of the GNU General Public License version 2 only, as
4632N/A * published by the Free Software Foundation. Oracle designates this
4632N/A * particular file as subject to the "Classpath" exception as provided
4632N/A * by Oracle in the LICENSE file that accompanied this code.
4632N/A *
4632N/A * This code is distributed in the hope that it will be useful, but WITHOUT
4632N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
4632N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
4632N/A * version 2 for more details (a copy is included in the LICENSE file that
4632N/A * accompanied this code).
4632N/A *
4632N/A * You should have received a copy of the GNU General Public License version
4632N/A * 2 along with this work; if not, write to the Free Software Foundation,
4632N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
4632N/A *
4632N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
4632N/A * or visit www.oracle.com if you need additional information or have any
4632N/A * questions.
4632N/A */
4632N/A
4639N/Apackage java.util.regex;
4632N/A
4632N/A
4632N/A/**
4632N/A * Utility class that implements the standard C ctype functionality.
4632N/A *
4632N/A * @author Hong Zhang
4632N/A */
4632N/A
4632N/Afinal class ASCII {
4632N/A
4632N/A static final int UPPER = 0x00000100;
4632N/A
4632N/A static final int LOWER = 0x00000200;
4632N/A
4632N/A static final int DIGIT = 0x00000400;
4632N/A
4632N/A static final int SPACE = 0x00000800;
4632N/A
4632N/A static final int PUNCT = 0x00001000;
4632N/A
4632N/A static final int CNTRL = 0x00002000;
4632N/A
4632N/A static final int BLANK = 0x00004000;
4632N/A
4632N/A static final int HEX = 0x00008000;
4632N/A
4632N/A static final int UNDER = 0x00010000;
4632N/A
4632N/A static final int ASCII = 0x0000FF00;
4639N/A
4632N/A static final int ALPHA = (UPPER|LOWER);
4632N/A
4632N/A static final int ALNUM = (UPPER|LOWER|DIGIT);
4632N/A
4632N/A static final int GRAPH = (PUNCT|UPPER|LOWER|DIGIT);
4632N/A
4632N/A static final int WORD = (UPPER|LOWER|UNDER|DIGIT);
4632N/A
4632N/A static final int XDIGIT = (HEX);
4632N/A
4632N/A private static final int[] ctype = new int[] {
4632N/A CNTRL, /* 00 (NUL) */
4632N/A CNTRL, /* 01 (SOH) */
4632N/A CNTRL, /* 02 (STX) */
4632N/A CNTRL, /* 03 (ETX) */
4632N/A CNTRL, /* 04 (EOT) */
4632N/A CNTRL, /* 05 (ENQ) */
4632N/A CNTRL, /* 06 (ACK) */
4632N/A CNTRL, /* 07 (BEL) */
4632N/A CNTRL, /* 08 (BS) */
4632N/A SPACE+CNTRL+BLANK, /* 09 (HT) */
4632N/A SPACE+CNTRL, /* 0A (LF) */
4632N/A SPACE+CNTRL, /* 0B (VT) */
4632N/A SPACE+CNTRL, /* 0C (FF) */
4632N/A SPACE+CNTRL, /* 0D (CR) */
4632N/A CNTRL, /* 0E (SI) */
4632N/A CNTRL, /* 0F (SO) */
4632N/A CNTRL, /* 10 (DLE) */
4632N/A CNTRL, /* 11 (DC1) */
4632N/A CNTRL, /* 12 (DC2) */
4632N/A CNTRL, /* 13 (DC3) */
4632N/A CNTRL, /* 14 (DC4) */
4632N/A CNTRL, /* 15 (NAK) */
4632N/A CNTRL, /* 16 (SYN) */
4632N/A CNTRL, /* 17 (ETB) */
4632N/A CNTRL, /* 18 (CAN) */
4632N/A CNTRL, /* 19 (EM) */
4632N/A CNTRL, /* 1A (SUB) */
4632N/A CNTRL, /* 1B (ESC) */
4632N/A CNTRL, /* 1C (FS) */
4632N/A CNTRL, /* 1D (GS) */
4632N/A CNTRL, /* 1E (RS) */
4632N/A CNTRL, /* 1F (US) */
4632N/A SPACE+BLANK, /* 20 SPACE */
4632N/A PUNCT, /* 21 ! */
4632N/A PUNCT, /* 22 " */
4632N/A PUNCT, /* 23 # */
4632N/A PUNCT, /* 24 $ */
4632N/A PUNCT, /* 25 % */
4632N/A PUNCT, /* 26 & */
4632N/A PUNCT, /* 27 ' */
4632N/A PUNCT, /* 28 ( */
4632N/A PUNCT, /* 29 ) */
4639N/A PUNCT, /* 2A * */
4632N/A PUNCT, /* 2B + */
4632N/A PUNCT, /* 2C , */
4632N/A PUNCT, /* 2D - */
4632N/A PUNCT, /* 2E . */
4632N/A PUNCT, /* 2F / */
4691N/A DIGIT+HEX+0, /* 30 0 */
4691N/A DIGIT+HEX+1, /* 31 1 */
4691N/A DIGIT+HEX+2, /* 32 2 */
4691N/A DIGIT+HEX+3, /* 33 3 */
4632N/A DIGIT+HEX+4, /* 34 4 */
4632N/A DIGIT+HEX+5, /* 35 5 */
4632N/A DIGIT+HEX+6, /* 36 6 */
4632N/A DIGIT+HEX+7, /* 37 7 */
4632N/A DIGIT+HEX+8, /* 38 8 */
4632N/A DIGIT+HEX+9, /* 39 9 */
4632N/A PUNCT, /* 3A : */
4632N/A PUNCT, /* 3B ; */
4632N/A PUNCT, /* 3C < */
4632N/A PUNCT, /* 3D = */
4686N/A PUNCT, /* 3E > */
4632N/A PUNCT, /* 3F ? */
4632N/A PUNCT, /* 40 @ */
4632N/A UPPER+HEX+10, /* 41 A */
4632N/A UPPER+HEX+11, /* 42 B */
4632N/A UPPER+HEX+12, /* 43 C */
4632N/A UPPER+HEX+13, /* 44 D */
4639N/A UPPER+HEX+14, /* 45 E */
4632N/A UPPER+HEX+15, /* 46 F */
4632N/A UPPER+16, /* 47 G */
4632N/A UPPER+17, /* 48 H */
4632N/A UPPER+18, /* 49 I */
4639N/A UPPER+19, /* 4A J */
4639N/A UPPER+20, /* 4B K */
4639N/A UPPER+21, /* 4C L */
4639N/A UPPER+22, /* 4D M */
4632N/A UPPER+23, /* 4E N */
4632N/A UPPER+24, /* 4F O */
4632N/A UPPER+25, /* 50 P */
4632N/A UPPER+26, /* 51 Q */
4632N/A UPPER+27, /* 52 R */
4639N/A UPPER+28, /* 53 S */
4632N/A UPPER+29, /* 54 T */
4632N/A UPPER+30, /* 55 U */
4632N/A UPPER+31, /* 56 V */
4632N/A UPPER+32, /* 57 W */
4639N/A UPPER+33, /* 58 X */
4632N/A UPPER+34, /* 59 Y */
4632N/A UPPER+35, /* 5A Z */
4632N/A PUNCT, /* 5B [ */
4632N/A PUNCT, /* 5C \ */
4639N/A PUNCT, /* 5D ] */
4632N/A PUNCT, /* 5E ^ */
4632N/A PUNCT|UNDER, /* 5F _ */
4632N/A PUNCT, /* 60 ` */
4632N/A LOWER+HEX+10, /* 61 a */
4639N/A LOWER+HEX+11, /* 62 b */
4632N/A LOWER+HEX+12, /* 63 c */
4632N/A LOWER+HEX+13, /* 64 d */
4632N/A LOWER+HEX+14, /* 65 e */
4632N/A LOWER+HEX+15, /* 66 f */
4632N/A LOWER+16, /* 67 g */
4632N/A LOWER+17, /* 68 h */
4632N/A LOWER+18, /* 69 i */
4632N/A LOWER+19, /* 6A j */
4632N/A LOWER+20, /* 6B k */
4632N/A LOWER+21, /* 6C l */
4632N/A LOWER+22, /* 6D m */
4632N/A LOWER+23, /* 6E n */
4632N/A LOWER+24, /* 6F o */
4632N/A LOWER+25, /* 70 p */
4632N/A LOWER+26, /* 71 q */
4632N/A LOWER+27, /* 72 r */
4632N/A LOWER+28, /* 73 s */
4632N/A LOWER+29, /* 74 t */
4632N/A LOWER+30, /* 75 u */
4632N/A LOWER+31, /* 76 v */
4632N/A LOWER+32, /* 77 w */
4632N/A LOWER+33, /* 78 x */
4632N/A LOWER+34, /* 79 y */
4632N/A LOWER+35, /* 7A z */
4632N/A PUNCT, /* 7B { */
4632N/A PUNCT, /* 7C | */
4632N/A PUNCT, /* 7D } */
4632N/A PUNCT, /* 7E ~ */
4632N/A CNTRL, /* 7F (DEL) */
4632N/A };
4632N/A
4632N/A static int getType(int ch) {
4632N/A return ((ch & 0xFFFFFF80) == 0 ? ctype[ch] : 0);
4632N/A }
4632N/A
4632N/A static boolean isType(int ch, int type) {
4632N/A return (getType(ch) & type) != 0;
4632N/A }
4632N/A
4632N/A static boolean isAscii(int ch) {
4632N/A return ((ch & 0xFFFFFF80) == 0);
4632N/A }
4632N/A
4632N/A static boolean isAlpha(int ch) {
4632N/A return isType(ch, ALPHA);
4632N/A }
4632N/A
4632N/A static boolean isDigit(int ch) {
4632N/A return ((ch-'0')|('9'-ch)) >= 0;
4874N/A }
4874N/A
4632N/A static boolean isAlnum(int ch) {
4632N/A return isType(ch, ALNUM);
4632N/A }
4632N/A
4632N/A static boolean isGraph(int ch) {
4632N/A return isType(ch, GRAPH);
4632N/A }
4632N/A
4632N/A static boolean isPrint(int ch) {
4632N/A return ((ch-0x20)|(0x7E-ch)) >= 0;
4632N/A }
4632N/A
4632N/A static boolean isPunct(int ch) {
4632N/A return isType(ch, PUNCT);
4632N/A }
4632N/A
4632N/A static boolean isSpace(int ch) {
4632N/A return isType(ch, SPACE);
4632N/A }
4632N/A
4632N/A static boolean isHexDigit(int ch) {
4632N/A return isType(ch, HEX);
4632N/A }
4632N/A
4632N/A static boolean isOctDigit(int ch) {
4632N/A return ((ch-'0')|('7'-ch)) >= 0;
4632N/A }
4632N/A
4632N/A static boolean isCntrl(int ch) {
4632N/A return isType(ch, CNTRL);
4632N/A }
4632N/A
4632N/A static boolean isLower(int ch) {
4632N/A return ((ch-'a')|('z'-ch)) >= 0;
4632N/A }
4632N/A
4632N/A static boolean isUpper(int ch) {
4632N/A return ((ch-'A')|('Z'-ch)) >= 0;
4632N/A }
4632N/A
4632N/A static boolean isWord(int ch) {
4632N/A return isType(ch, WORD);
4632N/A }
4632N/A
4632N/A static int toDigit(int ch) {
4632N/A return (ctype[ch & 0x7F] & 0x3F);
4632N/A }
4632N/A
4632N/A static int toLower(int ch) {
4632N/A return isUpper(ch) ? (ch + 0x20) : ch;
4632N/A }
4632N/A
4632N/A static int toUpper(int ch) {
4632N/A return isLower(ch) ? (ch - 0x20) : ch;
4632N/A }
4632N/A
4632N/A}
4632N/A