mirror of https://github.com/octoleo/plantuml.git
140 lines
3.7 KiB
Java
140 lines
3.7 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2023, Arnaud Roques
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*
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* Project Info: http://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* http://plantuml.com/patreon (only 1$ per month!)
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* http://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package net.sourceforge.plantuml.command.regex;
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public class FoxSignature {
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private static final long masks[] = new long[127];
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private static final long MASK_SPACES;
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private static final long MASK_SPECIAL1;
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static {
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final String full = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0!\"#$%&\'()*+,-./:;<=>?@[\\]^_{|}~";
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long m = 1L;
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MASK_SPACES = m;
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m = m << 1;
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MASK_SPECIAL1 = m;
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m = m << 1;
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for (int i = 0; i < full.length(); i++) {
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char ch = full.charAt(i);
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masks[ch] = m;
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if (ch >= 'A' && ch <= 'Z') {
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ch = (char) (ch + ('a' - 'A'));
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masks[ch] = m;
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} else if (ch == '.' || ch == '=' || ch == '-' || ch == '~')
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masks[ch] |= MASK_SPECIAL1;
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m = m << 1;
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}
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masks[' '] = MASK_SPACES;
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masks['\t'] = MASK_SPACES;
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masks['\r'] = MASK_SPACES;
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masks['\n'] = MASK_SPACES;
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masks['\f'] = MASK_SPACES;
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}
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public static long getSpecialSpaces() {
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return MASK_SPACES;
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}
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public static long getSpecial1() {
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return MASK_SPECIAL1;
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}
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public static void printMe() {
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for (int i = 0; i < masks.length; i++)
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if (masks[i] > 0) {
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final char ch = (char) i;
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System.err.println("ch=" + ch + " " + masks[i]);
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}
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}
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private static long getMask(char ch) {
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if (ch < masks.length)
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return masks[ch];
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else if (ch == '\u00A0')
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return MASK_SPACES;
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return 0L;
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}
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public static long getFoxSignatureFromRealString(String s) {
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long result = 0;
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for (int i = 0; i < s.length(); i++)
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result = result | getMask(s.charAt(i));
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return result;
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}
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public static long getFoxSignatureFromRegex(String s) {
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long result = 0;
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for (int i = 0; i < s.length(); i++) {
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if (s.charAt(i) == '.') {
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if (s.charAt(i + 1) == '+' || s.charAt(i + 1) == '*')
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i++;
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else
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throw new IllegalArgumentException(s);
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} else if (s.charAt(i) == '\\') {
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if (s.charAt(i + 1) == 'b')
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i++;
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else if (Character.isLetterOrDigit(s.charAt(i + 1)))
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throw new IllegalArgumentException(s);
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} else {
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if (i + 1 < s.length() && (s.charAt(i + 1) == '?' || s.charAt(i + 1) == '*')) {
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i++;
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continue;
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}
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result = result | getMask(s.charAt(i));
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if (i + 1 < s.length() && s.charAt(i + 1) == '+') {
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i++;
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}
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}
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}
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return result;
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}
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public static String backToString(long check) {
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final StringBuilder sb = new StringBuilder();
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for (int i = 0; i < masks.length; i++)
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if (masks[i] != 0L && (check & masks[i]) != 0L) {
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final char ch = (char) i;
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sb.append(ch);
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}
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return sb.toString();
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}
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}
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