mirror of https://github.com/octoleo/plantuml.git
114 lines
3.3 KiB
Java
114 lines
3.3 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 2009-2017, 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;
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import java.util.List;
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import net.sourceforge.plantuml.StringUtils;
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import net.sourceforge.plantuml.command.regex.Matcher2;
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import net.sourceforge.plantuml.command.regex.MyPattern;
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import net.sourceforge.plantuml.command.regex.Pattern2;
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import net.sourceforge.plantuml.core.Diagram;
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public abstract class SingleLineCommand<S extends Diagram> implements Command<S> {
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private final Pattern2 pattern;
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public SingleLineCommand(String pattern) {
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if (pattern == null) {
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throw new IllegalArgumentException();
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}
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if (pattern.startsWith("(?i)^") == false || pattern.endsWith("$") == false) {
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throw new IllegalArgumentException("Bad pattern " + pattern);
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}
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this.pattern = MyPattern.cmpile(pattern);
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}
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public String[] getDescription() {
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return new String[] { pattern.pattern() };
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}
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final public CommandControl isValid(BlocLines lines) {
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if (lines.size() != 1) {
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return CommandControl.NOT_OK;
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}
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if (isCommandForbidden()) {
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return CommandControl.NOT_OK;
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}
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final String line = StringUtils.trin(lines.getFirst499());
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final Matcher2 m = pattern.matcher(line);
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final boolean result = m.find();
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if (result) {
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actionIfCommandValid();
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}
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return result ? CommandControl.OK : CommandControl.NOT_OK;
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}
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protected boolean isCommandForbidden() {
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return false;
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}
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protected void actionIfCommandValid() {
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}
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public final CommandExecutionResult execute(S system, BlocLines lines) {
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if (lines.size() != 1) {
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throw new IllegalArgumentException();
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}
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final String line = StringUtils.trin(lines.getFirst499());
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if (isForbidden(line)) {
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return CommandExecutionResult.error("Syntax error: " + line);
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}
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final List<String> arg = getSplit(line);
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if (arg == null) {
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return CommandExecutionResult.error("Cannot parse line " + line);
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}
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return executeArg(system, arg);
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}
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protected boolean isForbidden(String line) {
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return false;
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}
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protected abstract CommandExecutionResult executeArg(S system, List<String> arg);
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final public List<String> getSplit(String line) {
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return StringUtils.getSplit(pattern, line);
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}
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}
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