| /* |
| * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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; |
| } |
| |
| } |
