CommandCreoleStyle.java

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 * PlantUML : a free UML diagram generator
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 * (C) Copyright 2009-2024, Arnaud Roques
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package net.sourceforge.plantuml.klimt.creole.command;

import java.util.List;

import com.plantuml.ubrex.UMatcher;
import com.plantuml.ubrex.UnicodeBracketedExpression;

import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.color.HColorSet;
import net.sourceforge.plantuml.klimt.creole.legacy.StripeSimple;
import net.sourceforge.plantuml.klimt.font.FontConfiguration;
import net.sourceforge.plantuml.klimt.font.FontStyle;

public class CommandCreoleStyle implements Command {

	@Override
	public String startingChars() {
		return "</*_~-";
	}

	private final FontStyle style;
	private final boolean tryExtendedColor;
	private final UnicodeBracketedExpression ubrex;

	public static Command createCreole(FontStyle style) {
		final String ubrexString = style.getUbrexCreoleSyntax() + "〶$V=〄+〴.->〘" + style.getUbrexCreoleSyntax() + "〙";
		return new CommandCreoleStyle(ubrexString, style, false);
	}

	public static Command createLegacy(FontStyle style) {
		final String ubrexString = style.getUbrexActivationPattern() + "〶$V=〄>〘" + style.getUbrexDeactivationPattern()
				+ "〙";
		return new CommandCreoleStyle(ubrexString, style, style.canHaveExtendedColor());
	}

	public static Command createLegacyEol(FontStyle style) {
		final String ubrexString = style.getUbrexActivationPattern() + "〶$V=〇+〴.";
		return new CommandCreoleStyle(ubrexString, style, style.canHaveExtendedColor());
	}

	private CommandCreoleStyle(String ubrexString, FontStyle style, boolean tryExtendedColor) {
		this.ubrex = UnicodeBracketedExpression.build(ubrexString);
		this.style = style;
		this.tryExtendedColor = tryExtendedColor;
	}

	private HColor getExtendedColor(UMatcher matcher) {
		if (tryExtendedColor) {
			final List<String> extendedColor = matcher.getCapture("XC");
			if (extendedColor.size() > 0)
				return HColorSet.instance().getColorOrWhite(extendedColor.get(0));
		}

		return null;
	}

	public String executeAndGetRemaining(final String line, StripeSimple stripe) {
		final UMatcher matcher = ubrex.match(line);

		final List<String> value = matcher.getCapture("V");
		final String accepted = matcher.getAcceptedMatch();
		if (value.size() == 0)
			throw new IllegalStateException();

		final FontConfiguration fc1 = stripe.getActualFontConfiguration();
		final FontConfiguration fc2 = new AddStyle(style, getExtendedColor(matcher)).apply(fc1);
		stripe.setActualFontConfiguration(fc2);

		stripe.analyzeAndAdd(value.get(0));
		stripe.setActualFontConfiguration(fc1);
		return line.substring(accepted.length());
	}

	public int matchingSize(String line) {
		final UMatcher matcher = ubrex.match(line);
		final List<String> value = matcher.getCapture("V");
		if (value.size() == 0)
			return 0;

		return value.get(0).length();
	}

}