- /*
- * @(#)ASCII.java 1.12 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
- package java.util.regex;
- /**
- * Utility class that implements the standard C ctype functionality.
- *
- * @author Hong Zhang
- */
- final class ASCII {
- static final int UPPER = 0x00000100;
- static final int LOWER = 0x00000200;
- static final int DIGIT = 0x00000400;
- static final int SPACE = 0x00000800;
- static final int PUNCT = 0x00001000;
- static final int CNTRL = 0x00002000;
- static final int BLANK = 0x00004000;
- static final int HEX = 0x00008000;
- static final int UNDER = 0x00010000;
- static final int ASCII = 0x0000FF00;
- static final int ALPHA = (UPPER|LOWER);
- static final int ALNUM = (UPPER|LOWER|DIGIT);
- static final int GRAPH = (PUNCT|UPPER|LOWER|DIGIT);
- static final int WORD = (UPPER|LOWER|UNDER|DIGIT);
- static final int XDIGIT = (HEX);
- private static final int[] ctype = new int[] {
- CNTRL, /* 00 (NUL) */
- CNTRL, /* 01 (SOH) */
- CNTRL, /* 02 (STX) */
- CNTRL, /* 03 (ETX) */
- CNTRL, /* 04 (EOT) */
- CNTRL, /* 05 (ENQ) */
- CNTRL, /* 06 (ACK) */
- CNTRL, /* 07 (BEL) */
- CNTRL, /* 08 (BS) */
- SPACE+CNTRL+BLANK, /* 09 (HT) */
- SPACE+CNTRL, /* 0A (LF) */
- SPACE+CNTRL, /* 0B (VT) */
- SPACE+CNTRL, /* 0C (FF) */
- SPACE+CNTRL, /* 0D (CR) */
- CNTRL, /* 0E (SI) */
- CNTRL, /* 0F (SO) */
- CNTRL, /* 10 (DLE) */
- CNTRL, /* 11 (DC1) */
- CNTRL, /* 12 (DC2) */
- CNTRL, /* 13 (DC3) */
- CNTRL, /* 14 (DC4) */
- CNTRL, /* 15 (NAK) */
- CNTRL, /* 16 (SYN) */
- CNTRL, /* 17 (ETB) */
- CNTRL, /* 18 (CAN) */
- CNTRL, /* 19 (EM) */
- CNTRL, /* 1A (SUB) */
- CNTRL, /* 1B (ESC) */
- CNTRL, /* 1C (FS) */
- CNTRL, /* 1D (GS) */
- CNTRL, /* 1E (RS) */
- CNTRL, /* 1F (US) */
- SPACE+BLANK, /* 20 SPACE */
- PUNCT, /* 21 ! */
- PUNCT, /* 22 " */
- PUNCT, /* 23 # */
- PUNCT, /* 24 $ */
- PUNCT, /* 25 % */
- PUNCT, /* 26 & */
- PUNCT, /* 27 ' */
- PUNCT, /* 28 ( */
- PUNCT, /* 29 ) */
- PUNCT, /* 2A * */
- PUNCT, /* 2B + */
- PUNCT, /* 2C , */
- PUNCT, /* 2D - */
- PUNCT, /* 2E . */
- PUNCT, /* 2F / */
- DIGIT+HEX+0, /* 30 0 */
- DIGIT+HEX+1, /* 31 1 */
- DIGIT+HEX+2, /* 32 2 */
- DIGIT+HEX+3, /* 33 3 */
- DIGIT+HEX+4, /* 34 4 */
- DIGIT+HEX+5, /* 35 5 */
- DIGIT+HEX+6, /* 36 6 */
- DIGIT+HEX+7, /* 37 7 */
- DIGIT+HEX+8, /* 38 8 */
- DIGIT+HEX+9, /* 39 9 */
- PUNCT, /* 3A : */
- PUNCT, /* 3B ; */
- PUNCT, /* 3C < */
- PUNCT, /* 3D = */
- PUNCT, /* 3E > */
- PUNCT, /* 3F ? */
- PUNCT, /* 40 @ */
- UPPER+HEX+10, /* 41 A */
- UPPER+HEX+11, /* 42 B */
- UPPER+HEX+12, /* 43 C */
- UPPER+HEX+13, /* 44 D */
- UPPER+HEX+14, /* 45 E */
- UPPER+HEX+15, /* 46 F */
- UPPER+16, /* 47 G */
- UPPER+17, /* 48 H */
- UPPER+18, /* 49 I */
- UPPER+19, /* 4A J */
- UPPER+20, /* 4B K */
- UPPER+21, /* 4C L */
- UPPER+22, /* 4D M */
- UPPER+23, /* 4E N */
- UPPER+24, /* 4F O */
- UPPER+25, /* 50 P */
- UPPER+26, /* 51 Q */
- UPPER+27, /* 52 R */
- UPPER+28, /* 53 S */
- UPPER+29, /* 54 T */
- UPPER+30, /* 55 U */
- UPPER+31, /* 56 V */
- UPPER+32, /* 57 W */
- UPPER+33, /* 58 X */
- UPPER+34, /* 59 Y */
- UPPER+35, /* 5A Z */
- PUNCT, /* 5B [ */
- PUNCT, /* 5C \ */
- PUNCT, /* 5D ] */
- PUNCT, /* 5E ^ */
- PUNCT|UNDER, /* 5F _ */
- PUNCT, /* 60 ` */
- LOWER+HEX+10, /* 61 a */
- LOWER+HEX+11, /* 62 b */
- LOWER+HEX+12, /* 63 c */
- LOWER+HEX+13, /* 64 d */
- LOWER+HEX+14, /* 65 e */
- LOWER+HEX+15, /* 66 f */
- LOWER+16, /* 67 g */
- LOWER+17, /* 68 h */
- LOWER+18, /* 69 i */
- LOWER+19, /* 6A j */
- LOWER+20, /* 6B k */
- LOWER+21, /* 6C l */
- LOWER+22, /* 6D m */
- LOWER+23, /* 6E n */
- LOWER+24, /* 6F o */
- LOWER+25, /* 70 p */
- LOWER+26, /* 71 q */
- LOWER+27, /* 72 r */
- LOWER+28, /* 73 s */
- LOWER+29, /* 74 t */
- LOWER+30, /* 75 u */
- LOWER+31, /* 76 v */
- LOWER+32, /* 77 w */
- LOWER+33, /* 78 x */
- LOWER+34, /* 79 y */
- LOWER+35, /* 7A z */
- PUNCT, /* 7B { */
- PUNCT, /* 7C | */
- PUNCT, /* 7D } */
- PUNCT, /* 7E ~ */
- CNTRL, /* 7F (DEL) */
- };
- static int getType(int ch) {
- return ((ch & 0xFFFFFF80) == 0 ? ctype[ch] : 0);
- }
- static boolean isType(int ch, int type) {
- return (getType(ch) & type) != 0;
- }
- static boolean isAscii(int ch) {
- return ((ch & 0xFFFFFF80) == 0);
- }
- static boolean isAlpha(int ch) {
- return isType(ch, ALPHA);
- }
- static boolean isDigit(int ch) {
- return ((ch-'0')|('9'-ch)) >= 0;
- }
- static boolean isAlnum(int ch) {
- return isType(ch, ALNUM);
- }
- static boolean isGraph(int ch) {
- return isType(ch, GRAPH);
- }
- static boolean isPrint(int ch) {
- return ((ch-0x20)|(0x7E-ch)) >= 0;
- }
- static boolean isPunct(int ch) {
- return isType(ch, PUNCT);
- }
- static boolean isSpace(int ch) {
- return isType(ch, SPACE);
- }
- static boolean isHexDigit(int ch) {
- return isType(ch, HEX);
- }
- static boolean isOctDigit(int ch) {
- return ((ch-'0')|('7'-ch)) >= 0;
- }
- static boolean isCntrl(int ch) {
- return isType(ch, CNTRL);
- }
- static boolean isLower(int ch) {
- return ((ch-'a')|('z'-ch)) >= 0;
- }
- static boolean isUpper(int ch) {
- return ((ch-'A')|('Z'-ch)) >= 0;
- }
- static boolean isWord(int ch) {
- return isType(ch, WORD);
- }
- static int toDigit(int ch) {
- return (ctype[ch & 0x7F] & 0x3F);
- }
- static int toLower(int ch) {
- return isUpper(ch) ? (ch + 0x20) : ch;
- }
- static int toUpper(int ch) {
- return isLower(ch) ? (ch - 0x20) : ch;
- }
- }