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Styled XML parser is used by iText modules to parse HTML and XML

There is a newer version: 9.0.0

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2024 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see .
 */
package com.itextpdf.styledxmlparser.css.parse.syntax;

/**
 * {@link IParserState} implementation for the unknown state.
 */
class UnknownState implements IParserState {

    /**
     * The state machine that parses the CSS.
     */
    private CssParserStateController controller;

    /**
     * Creates a new {@link UnknownState} instance.
     *
     * @param controller the state machine that parses the CSS
     */
    UnknownState(CssParserStateController controller) {
        this.controller = controller;
    }

    /* (non-Javadoc)
     * @see com.itextpdf.styledxmlparser.css.parse.syntax.IParserState#process(char)
     */
    @Override
    public void process(char ch) {
        if (ch == '/') {
            controller.enterCommentStartState();
        } else if (ch == '@') {
            controller.enterRuleState();
        } else if (ch == '{') {
            controller.storeCurrentSelector();
            controller.enterPropertiesState();
        } else if (ch == '-' && controller.getBufferContents().endsWith("' && controller.getBufferContents().endsWith("--")) {
            // Ignoring html comments
            controller.resetBuffer();
        } else if (ch == '[' && controller.getBufferContents().endsWith("' && controller.getBufferContents().endsWith("]]")) {
            // Ignoring CDATA keyword
            controller.resetBuffer();
        } else {
            controller.appendToBuffer(ch);
        }
    }
}