com.axelor.web.tags.ScriptTag.java Source code

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Here is the source code for com.axelor.web.tags.ScriptTag.java

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/**
 * Axelor Business Solutions
 *
 * Copyright (C) 2005-2016 Axelor (<http://axelor.com>).
 *
 * This program is free software: you can redistribute it and/or  modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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 <http://www.gnu.org/licenses/>.
 */
package com.axelor.web.tags;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.jsp.JspWriter;

import com.google.common.io.CharStreams;
import com.google.common.io.LineProcessor;

public class ScriptTag extends AbstractTag {

    private List<String> files(final String manifest) throws IOException {

        final List<String> files = new ArrayList<>();
        final URL resource = this.getResource(manifest);
        if (resource == null) {
            return files;
        }

        try (final InputStream is = resource.openStream()) {
            return CharStreams.readLines(new InputStreamReader(is), new LineProcessor<List<String>>() {
                @Override
                public boolean processLine(String line) throws IOException {
                    if (line.startsWith("//= ")) {
                        line = line.substring(3).trim();
                        files.add(line);
                    }
                    return true;
                }

                @Override
                public List<String> getResult() {
                    return files;
                }
            });
        }
    }

    @Override
    protected List<String> getScripts() throws IOException {
        return files(getSrc());
    }

    @Override
    protected void doTag(String src) throws IOException {
        final JspWriter writer = getJspContext().getOut();
        writer.println("<script src=\"" + src + "\"></script>");
    }
}