com.onpositive.semantic.wikipedia.abstracts.svc.HtmlRendererBase.java Source code

Introduction

Here is the source code for com.onpositive.semantic.wikipedia.abstracts.svc.HtmlRendererBase.java

Source

/**
 * Copyright 2011 The Open Source Research Group,
 *                University of Erlangen-Nrnberg
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.onpositive.semantic.wikipedia.abstracts.svc;

import java.io.Writer;
import java.util.ArrayList;

import org.sweble.wikitext.parser.nodes.WtNode;

import de.fau.cs.osr.ptk.common.AstVisitor;
import de.fau.cs.osr.utils.PrinterBase;
import de.fau.cs.osr.utils.StringUtils;

public class HtmlRendererBase extends AstVisitor<WtNode> {
    protected final PrinterBase p;

    // =========================================================================

    protected HtmlRendererBase(Writer writer) {
        this.p = new PrinterBase(writer);
        this.p.setMemoize(false);
    }

    // =========================================================================

    protected static String esc(String content) {
        return StringUtils.escHtml(content);
    }

    protected static String esc(String content, boolean forAttribute) {
        return StringUtils.escHtml(content, forAttribute);
    }

    protected static String capitalize(String text) {
        return org.apache.commons.lang.StringUtils.capitalize(text);
    }

    // =========================================================================

    /**
     * Print Formatted
     */
    protected void pf(String format, Object... args) {
        p.print(String.format(format, args));
    }

    /**
     * Print Tree
     */
    protected void pt(String format, Object... args) {
        ArrayList<Object> a = new ArrayList<Object>(args.length);

        int arg = 0;
        int last = 0;
        for (int i = 0; i < format.length(); ++i) {
            char ch = format.charAt(i);
            if (ch == '%' && format.length() > i + 1) {
                char ch2 = format.charAt(i + 1);
                switch (ch2) {
                case '!': {
                    printPart(format, a, last, i);
                    last = i + 2;

                    Object object = args[arg++];
                    if (object instanceof String) {
                        p.println(object.toString());
                        break;

                    }
                    WtNode n = (WtNode) object;
                    if (n.isList()) {
                        iterate(n);
                    } else {
                        dispatch(n);
                    }
                    break;
                }

                case '=': // Escape string for HTML
                case '~': // Escape string for HTML attribute value
                {
                    printPart(format, a, last, i);
                    last = i + 2;

                    String s = (String) args[arg++];
                    p.print(esc(s, ch2 == '~'));

                    break;
                }

                case '%':
                    break;

                default:
                    a.add(args[arg++]);
                    break;
                }

                ++i;
            }
        }

        printPart(format, a, last, format.length());
    }

    private void printPart(String format, ArrayList<Object> a, int last, int i) {
        if (i - last > 0) {
            String f = format.substring(last, i);
            if (a.isEmpty()) {
                p.print(f);
            } else {
                p.print(String.format(f, a.toArray()));
                a.clear();
            }
        }
    }
}