package com.hx.util;

import java.io.UnsupportedEncodingException;
import java.text.MessageFormat;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 字符串工具类
 * 
 * @author ThinkGem
 * @version 2013-05-22
 */
public class StringUtils {

    private static final char SEPARATOR = '_';
    private static final String CHARSET_NAME = "UTF-8";

    /**
     * 格式化字符串，替换原字符串中的{0}, {1}，按顺序替换
     * 
     * @param oriStr
     * @param args
     * @return
     */
    public static String format(String oriStr, Object... args) {
        return MessageFormat.format(oriStr, args);
    }

    /**
     * 转换为字节数�?
     * 
     * @param str
     * @return
     */
    public static byte[] getBytes(String str) {
        if (str != null) {
            try {
                return str.getBytes(CHARSET_NAME);
            } catch (UnsupportedEncodingException e) {
                return null;
            }
        } else {
            return null;
        }
    }

    /**
     * 只取后两�?
     * 
     * @param str
     * @return
     */
    public static String getLastTwoChars(String str) {
        if (null != str && str.trim().length() > 0) {
            str = str.trim();
            int len = str.length();
            if (len == 2) {
                return str;
            } else if (len > 2) {
                return str.substring(len - 2);
            }
        }
        return "";
    }

    /**
     * 只取后三�?
     * 
     * @param str
     * @return
     */
    public static String getLastThreeChars(String str) {
        if (null != str && str.trim().length() > 0) {
            str = str.trim();
            int len = str.length();
            if (len == 3) {
                return str;
            } else if (len > 3) {
                return str.substring(len - 3);
            }
        }
        return "";
    }

    /**
     * 替换为手机识别的HTML，去掉样式及属�?�，保留回车�?
     * 
     * @param html
     * @return
     */
    public static String replaceMobileHtml(String html) {
        if (html == null) {
            return "";
        }
        return html.replaceAll("<([a-z]+?)\\s+?.*?>", "<$1>");
    }

    /**
     * 驼峰命名法工�?
     * 
     * @return toCamelCase("hello_world") == "helloWorld"
     *         toCapitalizeCamelCase("hello_world") == "HelloWorld"
     *         toUnderScoreCase("helloWorld") = "hello_world"
     */
    public static String toCamelCase(String s) {
        if (s == null) {
            return null;
        }

        s = s.toLowerCase();

        StringBuilder sb = new StringBuilder(s.length());
        boolean upperCase = false;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);

            if (c == SEPARATOR) {
                upperCase = true;
            } else if (upperCase) {
                sb.append(Character.toUpperCase(c));
                upperCase = false;
            } else {
                sb.append(c);
            }
        }

        return sb.toString();
    }

    /**
     * 驼峰命名法工�?
     * 
     * @return toCamelCase("hello_world") == "helloWorld"
     *         toCapitalizeCamelCase("hello_world") == "HelloWorld"
     *         toUnderScoreCase("helloWorld") = "hello_world"
     */
    public static String toCapitalizeCamelCase(String s) {
        if (s == null) {
            return null;
        }
        s = toCamelCase(s);
        return s.substring(0, 1).toUpperCase() + s.substring(1);
    }

    /**
     * 驼峰命名法工�?
     * 
     * @return toCamelCase("hello_world") == "helloWorld"
     *         toCapitalizeCamelCase("hello_world") == "HelloWorld"
     *         toUnderScoreCase("helloWorld") = "hello_world"
     */
    public static String toUnderScoreCase(String s) {
        if (s == null) {
            return null;
        }

        StringBuilder sb = new StringBuilder();
        boolean upperCase = false;
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);

            boolean nextUpperCase = true;

            if (i < (s.length() - 1)) {
                nextUpperCase = Character.isUpperCase(s.charAt(i + 1));
            }

            if ((i > 0) && Character.isUpperCase(c)) {
                if (!upperCase || !nextUpperCase) {
                    sb.append(SEPARATOR);
                }
                upperCase = true;
            } else {
                upperCase = false;
            }

            sb.append(Character.toLowerCase(c));
        }

        return sb.toString();
    }

    /**
     * 根据规则regExpr,判断字符内容是否匹配
     * <p>
     * 利用正则表达式规则判断，待验证的字符内容是否符合要求�? <br>
     * 比如'[0-9]*'即判断是否为数字的规�?, '^[a-z0-9_-]{3,15}$'即判断是否为用户名的规则,<br>
     * '((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%]).{6,20})'即判断是否为密码的规�?,<br>
     * '^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$'即email规则,<br>
     * '([^\s]+(\.(?i)(jpg|png|gif|bmp))$)'即判断某图片文件格式,<br>
     * '^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\.([01]?\\d\\d?|2[0-4]\\d|25[0-5])$'即IP规则.
     *
     * 
     * @param regExpr
     *            正则表达�?
     * @param content
     *            待验证的字符内容
     * @return boolean
     */
    public static boolean isMatch(String regExpr, String content) {
        if (StringUtils.isEmpty(regExpr, content))
            return false;

        Pattern pattern = Pattern.compile(regExpr);
        Matcher matcher = pattern.matcher(content);

        return matcher.matches();
    }

    /**
     * 正则判断纯数�?
     * 
     * @param str
     * @return
     */
    public static boolean isNumeric(String str) {
        Pattern pattern = Pattern.compile("[0-9]*");
        Matcher isNum = pattern.matcher(str);
        if (!isNum.matches()) {
            return false;
        }
        return true;
    }

    public static boolean isEmpty(String str) {
        return null == str || str.trim().length() == 0 || "undefined".equals(str);
    }

    /**判断空*/
    public static boolean isNull(String str) {
        return null == str || str.trim().length() == 0 || "undefined".equals(str);
    }

    /**判断非空*/
    public static boolean noNull(String str) {
        return null != str && str.trim().length() != 0 && !"undefined".equals(str);
    }

    /**
     * 判断字符内容中是否存在一个为空的字符�?
     * <p>
     * 如果在所有的字符串内容中，只要存在某�?个字符串为空，则返回为true, 如果�?有的字符串内容中，不存在�?个空字符串，则返回为false.
     * 
     * @param strings
     * @return boolean
     */
    public static boolean isEmpty(String... strings) {
        if (strings == null)
            return true;

        for (String str : strings) {
            if (StringUtils.isEmpty(str))
                return true;
        }

        return false;
    }

    public static boolean isAllEmpty(String... strings) {
        if (strings == null)
            return true;

        for (String str : strings) {
            if (!StringUtils.isEmpty(str))
                return false;
        }

        return true;
    }

    /**
     * @param strings
     *            该数组是否有�?
     * @return
     */
    public static boolean hasContent(String[] strings) {
        if (strings != null && strings.length > 0)
            return true;

        return false;
    }

    /**
     * @param params
     *            该map是否有�??
     * @return
     */
    public static boolean hasContent(Map<?, ?> params) {
        if (params != null && params.size() > 0)
            return true;

        return false;
    }

    public static boolean isNumeric2(String str) {
        if (null == str || isEmpty(str)) {
            return false;
        }
        char[] chars = str.toCharArray();
        for (char c : chars) {
            if (!Character.isDigit(c))
                return false;
        }
        return true;
    }

    public static int parseInt(String string) {
        if (null != string && isNumeric2(string)) {
            return Integer.parseInt(string);
        }
        return 0;
    }

    /**
     * 对字符串（手机，名称）作隐藏处理
     * @param oriStr 原始字符串
     * @param type 类型0：只保留第一个及最后一个字符，其它用*替代；1前4后3保留，中间用*替代
     * @return
     */
    public static String hideKeyWord(String oriStr, int type)
    {
        if(!isEmpty(oriStr))
        {
            String temp = null;

            if(type == 0)
            {
                if(oriStr.length() == 1)
                {
                    temp = oriStr;
                }else if(oriStr.length() == 2) {
                    temp = oriStr.substring(0, 1) + "*";
                }else if(oriStr.length() > 2) {
                    temp = oriStr.substring(0, 1);
                    for (int i = 1; i < oriStr.length() - 1; i++) {
                        temp += "*";
                    }
                    temp += oriStr.substring(oriStr.length() - 1, oriStr.length());
                }
            }else{
                if(oriStr.length() < 8)
                {
                    temp = oriStr;
                }else{
                    temp = oriStr.substring(0,3);
                    for (int i = 3; i < oriStr.length() - 4; i++) {
                        temp += "*";
                    }
                    temp += oriStr.substring(oriStr.length() - 4, oriStr.length());
                }
            }

            return temp;
        }

        return oriStr;
    }

    /**
     * 去除空格
     * @param info 信息
     * @return 返回
     */
    public static String trimBlank(String info){
        if (null != info){
            return info.trim();
        }
        return null;
    }
}