mirror of https://github.com/octoleo/plantuml.git
151 lines
4.2 KiB
Java
151 lines
4.2 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 2009-2020, 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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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.atomic.AtomicLong;
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import net.sourceforge.plantuml.Log;
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import net.sourceforge.plantuml.StringLocated;
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public final class RegexConcat extends RegexComposed implements IRegex {
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private static final ConcurrentMap<Object, RegexConcat> cache = new ConcurrentHashMap<Object, RegexConcat>();
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private final AtomicLong foxRegex = new AtomicLong(-1L);
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private int limitSize;
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// private static final Set<String> PRINTED2 = new HashSet<>();
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public static void printCacheInfo() {
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int nbCompiled = 0;
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int nbInvoked = 0;
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for (RegexConcat reg : cache.values()) {
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if (reg.isCompiled()) {
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nbCompiled++;
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}
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if (reg.invoked()) {
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nbInvoked++;
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}
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}
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Log.info("Regex total/invoked/compiled " + cache.size() + "/" + nbInvoked + "/" + nbCompiled);
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Log.info("Matches created " + nbCreateMatches.get());
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}
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public RegexConcat(IRegex... partials) {
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super(partials);
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}
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private long foxRegex() {
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if (foxRegex.get() == -1L) {
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long tmp = 0L;
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for (int i = 1; i < partials().size() - 1; i++) {
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final IRegex part = partials().get(i);
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if (part instanceof RegexLeaf) {
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final RegexLeaf leaf = (RegexLeaf) part;
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tmp = tmp | leaf.getFoxSignature();
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}
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}
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foxRegex.set(tmp);
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}
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return foxRegex.get();
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}
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public static RegexConcat build(String key, IRegex... partials) {
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// return buildInternal(partials);
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RegexConcat result = cache.get(key);
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if (result == null) {
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cache.putIfAbsent(key, buildInternal(partials));
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result = cache.get(key);
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// System.err.println("cache size=" + cache.size());
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// } else {
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// synchronized (PRINTED2) {
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// if (PRINTED2.contains(key) == false) {
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// System.err.println("if (key.equals(\"" + key + "\")) return
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// buildInternal(partials);");
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// }
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// PRINTED2.add(key);
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}
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return result;
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}
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private static RegexConcat buildInternal(IRegex... partials) {
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final RegexConcat result = new RegexConcat(partials);
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assert partials[0] == RegexLeaf.start();
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assert partials[partials.length - 1] == RegexLeaf.end();
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return result;
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}
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private boolean invoked() {
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return foxRegex.get() != -1L;
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}
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@Override
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public boolean match(StringLocated s) {
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if (limitSize != 0 && s.getString().length() > limitSize) {
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return false;
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}
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final long foxRegex = foxRegex();
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if (foxRegex != 0L) {
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final long foxLine = s.getFoxSignature();
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final long check = foxRegex & foxLine;
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// System.err.println("r=" + getFullSlow() + " s=" + s + " line=" + foxLine + "
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// regex" + foxRegex + " "
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// + check + " <" + FoxSignature.backToString(check) + ">");
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if (check != foxRegex) {
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return false;
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}
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}
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return super.match(s);
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}
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@Override
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protected String getFullSlow() {
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final StringBuilder sb = new StringBuilder();
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for (IRegex p : partials()) {
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sb.append(p.getPattern());
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}
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return sb.toString();
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}
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public RegexConcat protectSize(int size) {
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limitSize = size;
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return this;
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}
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}
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