jp.co.nemuzuka.utils.HtmlStringUtils.java Source code

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Here is the source code for jp.co.nemuzuka.utils.HtmlStringUtils.java

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/*
 * Copyright 2012 Kazumune Katagiri. (http://d.hatena.ne.jp/nemuzuka)
 *
 * 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 jp.co.nemuzuka.utils;

import org.apache.commons.lang.StringUtils;

/**
 * ????????
 * @author k-katagiri
 */
public class HtmlStringUtils {

    /**
     * textarea.
     * textArea?????
     * ?
     * http:????https:????<a/>
     * \r\n/\r/\n?<br />?????
     * @param target 
     * @return 
     */
    public static final String escapeTextAreaString(String target) {

        if (StringUtils.isEmpty(target)) {
            return "";
        }

        //?
        String resultStr = escape(target);
        resultStr = getATagString(resultStr);
        return replaseNl(resultStr);
    }

    /**
     * .
     * ?\r\n/\r/\n?<br />?????
     * @param target 
     * @return ?
     */
    private static String replaseNl(String target) {
        String result = target.replaceAll("\r\n", "\n");
        result = result.replaceAll("\r", "\n");
        return result.replaceAll("\n", "<br />");
    }

    /**
     * http?.
     * ???http/https??<a/>????
     * @param str 
     * @return a?
     */
    private static String getATagString(String str) {
        return str.replaceAll("(http://|https://){1}[\\w\\.\\-/:%]+", "<a href='$0' target='_blank'>$0</a>");
    }

    /**
     * ?.
     * ???
     * @param value 
     * @return 
     */
    private static String escape(String value) {

        if (value == null || value.length() == 0) {
            return value;
        }

        StringBuffer result = null;
        String filtered = null;
        for (int i = 0; i < value.length(); i++) {
            filtered = null;
            switch (value.charAt(i)) {
            case '<':
                filtered = "&lt;";
                break;
            case '>':
                filtered = "&gt;";
                break;
            case '&':
                filtered = "&amp;";
                break;
            case '"':
                filtered = "&quot;";
                break;
            case '\'':
                filtered = "&#39;";
                break;
            }

            if (result == null) {
                if (filtered != null) {
                    result = new StringBuffer(value.length() + 50);
                    if (i > 0) {
                        result.append(value.substring(0, i));
                    }
                    result.append(filtered);
                }
            } else {
                if (filtered == null) {
                    result.append(value.charAt(i));
                } else {
                    result.append(filtered);
                }
            }
        }

        return result == null ? value : result.toString();
    }

    /**
     * ??.
     * ???????
     * ????????????
     * zipCode<br>
     * prefecturalCapital cities townName buildingName
     * @param zipCode ?
     * @param prefecturalCapital ?
     * @param cities ?
     * @param townName ??
     * @param buildingName ??
     * @return ?
     */
    public static String createAddress(String zipCode, String prefecturalCapital, String cities, String townName,
            String buildingName) {

        StringBuilder sb = new StringBuilder();
        if (StringUtils.isNotEmpty(zipCode)) {
            sb = sb.append(zipCode).append("\n");
        }
        if (StringUtils.isNotEmpty(prefecturalCapital)) {
            sb = sb.append(prefecturalCapital).append(" ");
        }
        if (StringUtils.isNotEmpty(cities)) {
            sb = sb.append(cities).append(" ");
        }
        if (StringUtils.isNotEmpty(townName)) {
            sb = sb.append(townName).append(" ");
        }
        if (StringUtils.isNotEmpty(buildingName)) {
            sb = sb.append(buildingName).append(" ");
        }
        return escapeTextAreaString(sb.toString());
    }
}