jp.go.nict.langrid.management.web.utility.StringUtil.java Source code

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Here is the source code for jp.go.nict.langrid.management.web.utility.StringUtil.java

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/*
 * $Id$
 * 
 * This is a program for Language Grid Core Node. This combines multiple language resources and
 * provides composite language services. Copyright (C) 2005-2008 NICT Language Grid Project.
 * 
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Lesser General Public License as published by the Free Software Foundation, either version
 * 2.1 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with this program.
 * If not, see <http://www.gnu.org/licenses/>.
 */
package jp.go.nict.langrid.management.web.utility;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;

/**
 * 
 * 
 * @author Masaaki Kamiya
 * @author $Author$
 * @version $Revision$
 */
public class StringUtil {
    public static boolean isValidString(String target) {
        if (target == null) {
            return false;
        }
        if (target.equals("")) {
            return false;
        }
        return true;
    }

    /**
     * 
     * 
     */
    public static String toUppercaseHeadCharactor(String str) {
        StringBuffer sb = new StringBuffer();
        sb.append(str.substring(0, 1).toUpperCase());
        sb.append(str.substring(1).toLowerCase());
        return sb.toString();
    }

    /**
     * 
     * 
     */
    public static String[] extrateUrl(String str) {
        if (str != null && !str.equals("")) {
            List<String> results = new ArrayList<String>();
            String[] temp = str.split("http://");
            int i = 0;
            String prefix = "";
            for (String temp2 : temp) {
                String[] temp3 = temp2.split(" ");
                String[] temp4 = temp3[0].split("\n");
                String[] temp5 = temp4[0].split("\r");
                String[] temp6 = temp5[0].split("\t");
                String[] temp7 = temp6[0].split("]");
                if (i++ != 0) {
                    prefix = "http://";
                    results.add(prefix + temp7[0]);
                }
            }
            return results.toArray(new String[] {});
        }
        return new String[] {};
    }

    /**
     * 
     * 
     */
    public static String insertStringPerCount(String orig, String inserted, int count) {
        StringBuilder sb = new StringBuilder();
        int start = 0;
        int end = orig.length();
        while (start < end) {
            int tempCount = start + count < end ? start + count : end;
            sb.append(orig.substring(start, tempCount) + inserted);
            start = tempCount;
        }
        return sb.toString();
    }

    /**
     * 
     * 
     */
    public static String getLimitStyle(String str, int count) {
        if (str == null)
            return "";
        String tempStr = "";
        int tempCount = count - 1;
        for (int i = 0; i < str.length(); i++) {
            tempStr += StringUtils.substring(str, i, i + 1);
            if (!isHalfSizeAlphaNumeral(tempStr)) {
                tempCount = i + count;
                tempStr = "";
            }
            if (i > tempCount - 1) {
                if (isHalfSizeAlphaNumeral(tempStr)) {
                    return "word-break:break-all;";
                }
                tempCount = i + count;
                tempStr = "";
            }
        }
        return "";
    }

    /**
     * 
     * 
     */
    public static String getUniqueString() {
        MessageDigest sha;
        try {
            sha = MessageDigest.getInstance("SHA-1");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            return "";
        }
        sha.reset();
        sha.update(String.valueOf(Math.random()).getBytes());
        byte[] hash = sha.digest();
        StringBuffer sb = new StringBuffer();
        int cnt = hash.length;
        for (int i = 0; i < cnt; i++) {
            int d = hash[i];
            if (d < 0) {
                d += 256;
            }
            sb.append(Integer.toHexString(d & 0x0F));
        }
        return sb.toString();
    }

    /**
     * 
     * 
     */
    public static boolean isHalfSizeAlphaNumeral(String str) {
        if (!Pattern.compile("[!-,.-~]+").matcher(str).matches()) {
            // if (!Pattern.compile("[a-zA-Z0-9]+").matcher(str).matches()) {
            return false;
        }
        return true;
    }

    /**
     * 
     * 
     */
    public static String nullString(String str) {
        if (str == null) {
            return "";
        }
        return str;
    }

    /**
     * 
     * 
     */
    public static String nullTohyphen(String str) {
        return (str == null || str.equals("")) ? "-" : str;
    }

    /**
     * 
     * 
     */
    public static String nullandStringTohyphen(String str) {
        return (str == null || str.equals("") || str.equals("null")) ? "-" : str;
    }

    /**
     * 
     * 
     */
    public static String randomPassword(int size) {
        SecureRandom random = new SecureRandom();
        char[] pass = new char[size];
        for (int k = 0; k < pass.length; k++) {
            switch (random.nextInt(3)) {
            case 0: // 'a' - 'z'
                pass[k] = (char) (97 + random.nextInt(26));
                break;
            case 1: // 'A' - 'Z'
                pass[k] = (char) (65 + random.nextInt(26));
                break;
            case 2: // '0' - '9'
                pass[k] = (char) (48 + random.nextInt(10));
                break;
            default:
                pass[k] = 'a';
            }
        }
        return new String(pass);
    }

    /**
     * 
     * 
     */
    public static String replaceAtMark(String str) {
        return str.replace("@", " [at] ");
    }

    /**
     * 
     * 
     */
    public static String shortenString(String str, int i) {
        if ((str != null) && (str.length() > i)) {
            str = str.substring(0, i) + "...";
        }
        return nullString(str);
    }

    /**
     * 
     * 
     */
    public static String makeMasked(String message) {
        if (message == null || message.equals("")) {
            return "";
        }
        String masked = "";
        for (int i = 0; i < message.length(); i++) {
            masked += "*";
        }

        return masked;
    }

    /**
     * 
     * 
     */
    public static String replaceURLStringToLinkTags(String string) {
        String[] urls = StringUtil.extrateUrl(string);
        String result = string;
        for (String url : urls) {
            StringBuilder sb = new StringBuilder();
            sb.append("<a target=\"_blank\" href=\"");
            sb.append(url);
            sb.append("\">");
            sb.append(url);
            sb.append("</a>");
            result = result.replace(url, sb.toString());
        }
        return result;
    }
}