/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013-2014 sagyf Yang. The Four Group.
 */

package goja.core.kits.lang;

import com.google.common.base.Charsets;
import com.google.common.base.Strings;

import goja.core.StringPool;
import goja.core.Validator;
import goja.core.kits.ObjectKit;
import goja.core.kits.collection.CollectionKit;

import java.util.*;

/**
 * Miscellaneous {@link String} utility methods.
 *

 *
Mainly for internal use within the framework; consider
 * Jakarta's Commons Lang
 * for a more comprehensive suite of String utilities.
 *

 *
This class delivers some simple functionality that should really
 * be provided by the core Java {@code String} and {@link StringBuilder}
 * classes, such as the ability to {@link #replace} all occurrences of a given
 * substring in a target string. It also provides easy-to-use methods to convert
 * between delimited strings, such as CSV strings, and collections and arrays.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @author Keith Donald
 * @author Rob Harrop
 * @author Rick Evans
 * @author Arjen Poutsma
 * @since 16 April 2001
 */
public class Strs {
    private static final char EXTENSION_SEPARATOR = '.';

    //---------------------------------------------------------------------
    // General convenience methods for working with Strings
    //---------------------------------------------------------------------

    protected Strs() {
    }

    /**
     * Check whether the given String is empty.
     *
This method accepts any Object as an argument, comparing it to
     * {@code null} and the empty String. As a consequence, this method
     * will never return {@code true} for a non-null non-String object.
     *
The Object signature is useful for general attribute handling code
     * that commonly deals with Strings but generally has to iterate over
     * Objects since attributes may e.g. be primitive value objects as well.
     *
     * @param str the candidate String
     * @since 3.2.1
     */
    public static boolean isEmpty(Object str) {
        return (str == null || "".equals(str));
    }

    /**
     * Check that the given CharSequence is neither {@code null} nor of length 0.
     * Note: Will return {@code true} for a CharSequence that purely consists of whitespace.
     *

     * StringUtils.hasLength(null) = false
     * StringUtils.hasLength("") = false
     * StringUtils.hasLength(" ") = true
     * StringUtils.hasLength("Hello") = true
     *

     *
     * @param str the CharSequence to check (may be {@code null})
     * @return {@code true} if the CharSequence is not null and has length
     * @see #hasText(String)
     */
    public static boolean hasLength(CharSequence str) {
        return (str != null && str.length() > 0);
    }

    /**
     * Check that the given String is neither {@code null} nor of length 0.
     * Note: Will return {@code true} for a String that purely consists of whitespace.
     *
     * @param str the String to check (may be {@code null})
     * @return {@code true} if the String is not null and has length
     * @see #hasLength(CharSequence)
     */
    public static boolean hasLength(String str) {
        return hasLength((CharSequence) str);
    }

    /**
     * Check whether the given CharSequence has actual text.
     * More specifically, returns {@code true} if the string not {@code null},
     * its length is greater than 0, and it contains at least one non-whitespace character.
     *

     * StringUtils.hasText(null) = false
     * StringUtils.hasText("") = false
     * StringUtils.hasText(" ") = false
     * StringUtils.hasText("12345") = true
     * StringUtils.hasText(" 12345 ") = true
     *

     *
     * @param str the CharSequence to check (may be {@code null})
     * @return {@code true} if the CharSequence is not {@code null},
     * its length is greater than 0, and it does not contain whitespace only
     * @see Character#isWhitespace
     */
    public static boolean hasText(CharSequence str) {
        if (!hasLength(str)) {
            return false;
        }
        int strLen = str.length();
        for (int i = 0; i < strLen; i++) {
            if (!Character.isWhitespace(str.charAt(i))) {
                return true;
            }
        }
        return false;
    }

    /**
     * Check whether the given String has actual text.
     * More specifically, returns {@code true} if the string not {@code null},
     * its length is greater than 0, and it contains at least one non-whitespace character.
     *
     * @param str the String to check (may be {@code null})
     * @return {@code true} if the String is not {@code null}, its length is
     * greater than 0, and it does not contain whitespace only
     * @see #hasText(CharSequence)
     */
    public static boolean hasText(String str) {
        return hasText((CharSequence) str);
    }

    /**
     * Check whether the given CharSequence contains any whitespace characters.
     *
     * @param str the CharSequence to check (may be {@code null})
     * @return {@code true} if the CharSequence is not empty and
     * contains at least 1 whitespace character
     * @see Character#isWhitespace
     */
    public static boolean containsWhitespace(CharSequence str) {
        if (!hasLength(str)) {
            return false;
        }
        int strLen = str.length();
        for (int i = 0; i < strLen; i++) {
            if (Character.isWhitespace(str.charAt(i))) {
                return true;
            }
        }
        return false;
    }

    /**
     * Check whether the given String contains any whitespace characters.
     *
     * @param str the String to check (may be {@code null})
     * @return {@code true} if the String is not empty and
     * contains at least 1 whitespace character
     * @see #containsWhitespace(CharSequence)
     */
    public static boolean containsWhitespace(String str) {
        return containsWhitespace((CharSequence) str);
    }

    /**
     * Trim leading and trailing whitespace from the given String.
     *
     * @param str the String to check
     * @return the trimmed String
     * @see java.lang.Character#isWhitespace
     */
    public static String trimWhitespace(String str) {
        if (!hasLength(str)) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
            sb.deleteCharAt(0);
        }
        while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
            sb.deleteCharAt(sb.length() - 1);
        }
        return sb.toString();
    }

    /**
     * Trim all whitespace from the given String:
     * leading, trailing, and in between characters.
     *
     * @param str the String to check
     * @return the trimmed String
     * @see java.lang.Character#isWhitespace
     */
    public static String trimAllWhitespace(String str) {
        if (!hasLength(str)) {
            return str;
        }
        int len = str.length();
        StringBuilder sb = new StringBuilder(str.length());
        for (int i = 0; i < len; i++) {
            char c = str.charAt(i);
            if (!Character.isWhitespace(c)) {
                sb.append(c);
            }
        }
        return sb.toString();
    }

    /**
     * Trim leading whitespace from the given String.
     *
     * @param str the String to check
     * @return the trimmed String
     * @see java.lang.Character#isWhitespace
     */
    public static String trimLeadingWhitespace(String str) {
        if (!hasLength(str)) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
            sb.deleteCharAt(0);
        }
        return sb.toString();
    }

    /**
     * Trim trailing whitespace from the given String.
     *
     * @param str the String to check
     * @return the trimmed String
     * @see java.lang.Character#isWhitespace
     */
    public static String trimTrailingWhitespace(String str) {
        if (!hasLength(str)) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
            sb.deleteCharAt(sb.length() - 1);
        }
        return sb.toString();
    }

    /**
     * Trim all occurrences of the supplied leading character from the given String.
     *
     * @param str              the String to check
     * @param leadingCharacter the leading character to be trimmed
     * @return the trimmed String
     */
    public static String trimLeadingCharacter(String str, char leadingCharacter) {
        if (!hasLength(str)) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        while (sb.length() > 0 && sb.charAt(0) == leadingCharacter) {
            sb.deleteCharAt(0);
        }
        return sb.toString();
    }

    /**
     * Trim all occurrences of the supplied trailing character from the given String.
     *
     * @param str               the String to check
     * @param trailingCharacter the trailing character to be trimmed
     * @return the trimmed String
     */
    public static String trimTrailingCharacter(String str, char trailingCharacter) {
        if (!hasLength(str)) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str);
        while (sb.length() > 0 && sb.charAt(sb.length() - 1) == trailingCharacter) {
            sb.deleteCharAt(sb.length() - 1);
        }
        return sb.toString();
    }

    /**
     * Test if the given String starts with the specified prefix,
     * ignoring upper/lower case.
     *
     * @param str    the String to check
     * @param prefix the prefix to look for
     * @see java.lang.String#startsWith
     */
    public static boolean startsWithIgnoreCase(String str, String prefix) {
        if (str == null || prefix == null) {
            return false;
        }
        if (str.startsWith(prefix)) {
            return true;
        }
        if (str.length() < prefix.length()) {
            return false;
        }
        String lcStr = str.substring(0, prefix.length()).toLowerCase();
        String lcPrefix = prefix.toLowerCase();
        return lcStr.equals(lcPrefix);
    }

    /**
     * Test if the given String ends with the specified suffix,
     * ignoring upper/lower case.
     *
     * @param str    the String to check
     * @param suffix the suffix to look for
     * @see java.lang.String#endsWith
     */
    public static boolean endsWithIgnoreCase(String str, String suffix) {
        if (str == null || suffix == null) {
            return false;
        }
        if (str.endsWith(suffix)) {
            return true;
        }
        if (str.length() < suffix.length()) {
            return false;
        }

        String lcStr = str.substring(str.length() - suffix.length()).toLowerCase();
        String lcSuffix = suffix.toLowerCase();
        return lcStr.equals(lcSuffix);
    }

    /**
     * Test whether the given string matches the given substring
     * at the given index.
     *
     * @param str       the original string (or StringBuilder)
     * @param index     the index in the original string to start matching against
     * @param substring the substring to match at the given index
     */
    public static boolean substringMatch(CharSequence str, int index, CharSequence substring) {
        for (int j = 0; j < substring.length(); j++) {
            int i = index + j;
            if (i >= str.length() || str.charAt(i) != substring.charAt(j)) {
                return false;
            }
        }
        return true;
    }

    /**
     * Count the occurrences of the substring in string s.
     *
     * @param str string to search in. Return 0 if this is null.
     * @param sub string to search for. Return 0 if this is null.
     */
    public static int countOccurrencesOf(String str, String sub) {
        if (str == null || sub == null || str.length() == 0 || sub.length() == 0) {
            return 0;
        }
        int count = 0;
        int pos = 0;
        int idx;
        while ((idx = str.indexOf(sub, pos)) != -1) {
            ++count;
            pos = idx + sub.length();
        }
        return count;
    }

    /**
     * Replace all occurrences of a substring within a string with
     * another string.
     *
     * @param inString   String to examine
     * @param oldPattern String to replace
     * @param newPattern String to insert
     * @return a String with the replacements
     */
    public static String replace(String inString, String oldPattern, String newPattern) {
        if (!hasLength(inString) || !hasLength(oldPattern) || newPattern == null) {
            return inString;
        }
        StringBuilder sb = new StringBuilder();
        int pos = 0; // our position in the old string
        int index = inString.indexOf(oldPattern);
        // the index of an occurrence we've found, or -1
        int patLen = oldPattern.length();
        while (index >= 0) {
            sb.append(inString.substring(pos, index));
            sb.append(newPattern);
            pos = index + patLen;
            index = inString.indexOf(oldPattern, pos);
        }
        sb.append(inString.substring(pos));
        // remember to append any characters to the right of a match
        return sb.toString();
    }

    /**
     * Delete all occurrences of the given substring.
     *
     * @param inString the original String
     * @param pattern  the pattern to delete all occurrences of
     * @return the resulting String
     */
    public static String delete(String inString, String pattern) {
        return replace(inString, pattern, "");
    }

    //---------------------------------------------------------------------
    // Convenience methods for working with formatted Strings
    //---------------------------------------------------------------------

    /**
     * Delete any character in a given String.
     *
     * @param inString      the original String
     * @param charsToDelete a set of characters to delete.
     *                      E.g. "az\n" will delete 'a's, 'z's and new lines.
     * @return the resulting String
     */
    public static String deleteAny(String inString, String charsToDelete) {
        if (!hasLength(inString) || !hasLength(charsToDelete)) {
            return inString;
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < inString.length(); i++) {
            char c = inString.charAt(i);
            if (charsToDelete.indexOf(c) == -1) {
                sb.append(c);
            }
        }
        return sb.toString();
    }

    /**
     * Quote the given String with single quotes.
     *
     * @param str the input String (e.g. "myString")
     * @return the quoted String (e.g. "'myString'"),
     * or {@code null} if the input was {@code null}
     */
    public static String quote(String str) {
        return (str != null ? "'" + str + "'" : null);
    }

    /**
     * Turn the given Object into a String with single quotes
     * if it is a String; keeping the Object as-is else.
     *
     * @param obj the input Object (e.g. "myString")
     * @return the quoted String (e.g. "'myString'"),
     * or the input object as-is if not a String
     */
    public static Object quoteIfString(Object obj) {
        return (obj instanceof String ? quote((String) obj) : obj);
    }

    /**
     * Unqualify a string qualified by a '.' dot character. For example,
     * "this.name.is.qualified", returns "qualified".
     *
     * @param qualifiedName the qualified name
     */
    public static String unqualify(String qualifiedName) {
        return unqualify(qualifiedName, '.');
    }

    /**
     * Unqualify a string qualified by a separator character. For example,
     * "this:name:is:qualified" returns "qualified" if using a ':' separator.
     *
     * @param qualifiedName the qualified name
     * @param separator     the separator
     */
    public static String unqualify(String qualifiedName, char separator) {
        return qualifiedName.substring(qualifiedName.lastIndexOf(separator) + 1);
    }

    /**
     * Capitalize a {@code String}, changing the first letter to
     * upper case as per {@link Character#toUpperCase(char)}.
     * No other letters are changed.
     *
     * @param str the String to capitalize, may be {@code null}
     * @return the capitalized String, {@code null} if null
     */
    public static String capitalize(String str) {
        return changeFirstCharacterCase(str, true);
    }

    /**
     * Uncapitalize a {@code String}, changing the first letter to
     * lower case as per {@link Character#toLowerCase(char)}.
     * No other letters are changed.
     *
     * @param str the String to uncapitalize, may be {@code null}
     * @return the uncapitalized String, {@code null} if null
     */
    public static String uncapitalize(String str) {
        return changeFirstCharacterCase(str, false);
    }

    private static String changeFirstCharacterCase(String str, boolean capitalize) {
        if (str == null || str.length() == 0) {
            return str;
        }
        StringBuilder sb = new StringBuilder(str.length());
        if (capitalize) {
            sb.append(Character.toUpperCase(str.charAt(0)));
        } else {
            sb.append(Character.toLowerCase(str.charAt(0)));
        }
        sb.append(str.substring(1));
        return sb.toString();
    }

    /**
     * Extract the filename from the given path,
     * e.g. "mypath/myfile.txt" -> "myfile.txt".
     *
     * @param path the file path (may be {@code null})
     * @return the extracted filename, or {@code null} if none
     */
    public static String getFilename(String path) {
        if (path == null) {
            return null;
        }
        int separatorIndex = path.lastIndexOf(StringPool.SLASH);
        return (separatorIndex != -1 ? path.substring(separatorIndex + 1) : path);
    }

    /**
     * Extract the filename extension from the given path,
     * e.g. "mypath/myfile.txt" -> "txt".
     *
     * @param path the file path (may be {@code null})
     * @return the extracted filename extension, or {@code null} if none
     */
    public static String getFilenameExtension(String path) {
        if (path == null) {
            return null;
        }
        int extIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
        if (extIndex == -1) {
            return null;
        }
        int folderIndex = path.lastIndexOf(StringPool.SLASH);
        if (folderIndex > extIndex) {
            return null;
        }
        return path.substring(extIndex + 1);
    }

    /**
     * Strip the filename extension from the given path,
     * e.g. "mypath/myfile.txt" -> "mypath/myfile".
     *
     * @param path the file path (may be {@code null})
     * @return the path with stripped filename extension,
     * or {@code null} if none
     */
    public static String stripFilenameExtension(String path) {
        if (path == null) {
            return null;
        }
        int extIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
        if (extIndex == -1) {
            return path;
        }
        int folderIndex = path.lastIndexOf(StringPool.SLASH);
        if (folderIndex > extIndex) {
            return path;
        }
        return path.substring(0, extIndex);
    }

    /**
     * Apply the given relative path to the given path,
     * assuming standard Java folder separation (i.e. "/" separators).
     *
     * @param path         the path to start from (usually a full file path)
     * @param relativePath the relative path to apply
     *                     (relative to the full file path above)
     * @return the full file path that results from applying the relative path
     */
    public static String applyRelativePath(String path, String relativePath) {
        int separatorIndex = path.lastIndexOf(StringPool.SLASH);
        if (separatorIndex != -1) {
            String newPath = path.substring(0, separatorIndex);
            if (!relativePath.startsWith(StringPool.SLASH)) {
                newPath += StringPool.SLASH;
            }
            return newPath + relativePath;
        } else {
            return relativePath;
        }
    }

    /**
     * Normalize the path by suppressing sequences like "path/.." and
     * inner simple dots.
     *
The result is convenient for path comparison. For other uses,
     * notice that Windows separators ("\") are replaced by simple slashes.
     *
     * @param path the original path
     * @return the normalized path
     */
    public static String cleanPath(String path) {
        if (path == null) {
            return null;
        }
        String pathToUse = replace(path, StringPool.BACK_SLASH, StringPool.SLASH);

        // Strip prefix from path to analyze, to not treat it as part of the
        // first path element. This is necessary to correctly parse paths like
        // "file:core/../core/io/Resource.class", where the ".." should just
        // strip the first "core" directory while keeping the "file:" prefix.
        int prefixIndex = pathToUse.indexOf(":");
        String prefix = "";
        if (prefixIndex != -1) {
            prefix = pathToUse.substring(0, prefixIndex + 1);
            if (prefix.contains("/")) {
                prefix = "";
            } else {
                pathToUse = pathToUse.substring(prefixIndex + 1);
            }
        }
        if (pathToUse.startsWith(StringPool.SLASH)) {
            prefix = prefix + StringPool.SLASH;
            pathToUse = pathToUse.substring(1);
        }

        String[] pathArray = delimitedListToStringArray(pathToUse, StringPool.SLASH);
        List<String> pathElements = new LinkedList<String>();
        int tops = 0;

        for (int i = pathArray.length - 1; i >= 0; i--) {
            String element = pathArray[i];
//            if (StringPool.DOT.equals(element)) {
            // Points to current directory - drop it.
//            }
           /* else*/
            if (StringPool.DOTDOT.equals(element)) {
                // Registering top path found.
                tops++;
            } else {
                if (tops > 0) {
                    // Merging path element with element corresponding to top path.
                    tops--;
                } else {
                    // Normal path element found.
                    pathElements.add(0, element);
                }
            }
        }

        // Remaining top paths need to be retained.
        for (int i = 0; i < tops; i++) {
            pathElements.add(0, StringPool.DOTDOT);
        }

        return prefix + collectionToDelimitedString(pathElements, StringPool.SLASH);
    }

    /**
     * Compare two paths after normalization of them.
     *
     * @param path1 first path for comparison
     * @param path2 second path for comparison
     * @return whether the two paths are equivalent after normalization
     */
    public static boolean pathEquals(String path1, String path2) {
        return cleanPath(path1).equals(cleanPath(path2));
    }

    /**
     * Parse the given {@code localeString} value into a {@link Locale}.
     *
This is the inverse operation of {@link Locale#toString Locale's toString}.
     *
     * @param localeString the locale String, following {@code Locale's}
     *                     {@code toString()} format ("en", "en_UK", etc);
     *                     also accepts spaces as separators, as an alternative to underscores
     * @return a corresponding {@code Locale} instance
     * @throws IllegalArgumentException in case of an invalid locale specification
     */
    public static Locale parseLocaleString(String localeString) {
        String[] parts = tokenizeToStringArray(localeString, "_ ", false, false);
        String language = (parts.length > 0 ? parts[0] : "");
        String country = (parts.length > 1 ? parts[1] : "");
        validateLocalePart(language);
        validateLocalePart(country);
        String variant = "";
        if (parts.length > 2) {
            // There is definitely a variant, and it is everything after the country
            // code sans the separator between the country code and the variant.
            int endIndexOfCountryCode = localeString.indexOf(country, language.length()) + country.length();
            // Strip off any leading '_' and whitespace, what's left is the variant.
            variant = trimLeadingWhitespace(localeString.substring(endIndexOfCountryCode));
            if (variant.startsWith("_")) {
                variant = trimLeadingCharacter(variant, '_');
            }
        }
        return (language.length() > 0 ? new Locale(language, country, variant) : null);
    }

    private static void validateLocalePart(String localePart) {
        for (int i = 0; i < localePart.length(); i++) {
            char ch = localePart.charAt(i);
            if (ch != '_' && ch != ' ' && !Character.isLetterOrDigit(ch)) {
                throw new IllegalArgumentException(
                        "Locale part \"" + localePart + "\" contains invalid characters");
            }
        }
    }

    /**
     * Determine the RFC 3066 compliant language tag,
     * as used for the HTTP "Accept-Language" header.
     *
     * @param locale the Locale to transform to a language tag
     * @return the RFC 3066 compliant language tag as String
     */
    public static String toLanguageTag(Locale locale) {
        return locale.getLanguage() + (hasText(locale.getCountry()) ? "-" + locale.getCountry() : "");
    }

    //---------------------------------------------------------------------
    // Convenience methods for working with String arrays
    //---------------------------------------------------------------------

    /**
     * Parse the given {@code timeZoneString} value into a {@link TimeZone}.
     *
     * @param timeZoneString the time zone String, following {@link TimeZone#getTimeZone(String)}
     *                       but throwing {@link IllegalArgumentException} in case of an invalid time zone specification
     * @return a corresponding {@link TimeZone} instance
     * @throws IllegalArgumentException in case of an invalid time zone specification
     */
    public static TimeZone parseTimeZoneString(String timeZoneString) {
        TimeZone timeZone = TimeZone.getTimeZone(timeZoneString);
        if ("GMT".equals(timeZone.getID()) && !timeZoneString.startsWith("GMT")) {
            // We don't want that GMT fallback...
            throw new IllegalArgumentException("Invalid time zone specification '" + timeZoneString + "'");
        }
        return timeZone;
    }

    /**
     * Append the given String to the given String array, returning a new array
     * consisting of the input array contents plus the given String.
     *
     * @param array the array to append to (can be {@code null})
     * @param str   the String to append
     * @return the new array (never {@code null})
     */
    public static String[] addStringToArray(String[] array, String str) {
        if (ObjectKit.isEmpty(array)) {
            return new String[]{str};
        }
        String[] newArr = new String[array.length + 1];
        System.arraycopy(array, 0, newArr, 0, array.length);
        newArr[array.length] = str;
        return newArr;
    }

    /**
     * Concatenate the given String arrays into one,
     * with overlapping array elements included twice.
     *
The order of elements in the original arrays is preserved.
     *
     * @param array1 the first array (can be {@code null})
     * @param array2 the second array (can be {@code null})
     * @return the new array ({@code null} if both given arrays were {@code null})
     */
    public static String[] concatenateStringArrays(String[] array1, String[] array2) {
        if (ObjectKit.isEmpty(array1)) {
            return array2;
        }
        if (ObjectKit.isEmpty(array2)) {
            return array1;
        }
        String[] newArr = new String[array1.length + array2.length];
        System.arraycopy(array1, 0, newArr, 0, array1.length);
        System.arraycopy(array2, 0, newArr, array1.length, array2.length);
        return newArr;
    }

    /**
     * Merge the given String arrays into one, with overlapping
     * array elements only included once.
     *
The order of elements in the original arrays is preserved
     * (with the exception of overlapping elements, which are only
     * included on their first occurrence).
     *
     * @param array1 the first array (can be {@code null})
     * @param array2 the second array (can be {@code null})
     * @return the new array ({@code null} if both given arrays were {@code null})
     */
    public static String[] mergeStringArrays(String[] array1, String[] array2) {
        if (ObjectKit.isEmpty(array1)) {
            return array2;
        }
        if (ObjectKit.isEmpty(array2)) {
            return array1;
        }
        List<String> result = new ArrayList<String>();
        result.addAll(Arrays.asList(array1));
        for (String str : array2) {
            if (!result.contains(str)) {
                result.add(str);
            }
        }
        return toStringArray(result);
    }

    /**
     * Turn given source String array into sorted array.
     *
     * @param array the source array
     * @return the sorted array (never {@code null})
     */
    public static String[] sortStringArray(String[] array) {
        if (ObjectKit.isEmpty(array)) {
            return new String[0];
        }
        Arrays.sort(array);
        return array;
    }

    /**
     * Copy the given Collection into a String array.
     * The Collection must contain String elements only.
     *
     * @param collection the Collection to copy
     * @return the String array ({@code null} if the passed-in
     * Collection was {@code null})
     */
    public static String[] toStringArray(Collection<String> collection) {
        if (collection == null) {
            return null;
        }
        return collection.toArray(new String[collection.size()]);
    }

    /**
     * Copy the given Enumeration into a String array.
     * The Enumeration must contain String elements only.
     *
     * @param enumeration the Enumeration to copy
     * @return the String array ({@code null} if the passed-in
     * Enumeration was {@code null})
     */
    public static String[] toStringArray(Enumeration<String> enumeration) {
        if (enumeration == null) {
            return null;
        }
        List<String> list = Collections.list(enumeration);
        return list.toArray(new String[list.size()]);
    }

    /**
     * Trim the elements of the given String array,
     * calling {@code String.trim()} on each of them.
     *
     * @param array the original String array
     * @return the resulting array (of the same size) with trimmed elements
     */
    public static String[] trimArrayElements(String[] array) {
        if (ObjectKit.isEmpty(array)) {
            return new String[0];
        }
        String[] result = new String[array.length];
        for (int i = 0; i < array.length; i++) {
            String element = array[i];
            result[i] = (element != null ? element.trim() : null);
        }
        return result;
    }

    /**
     * Remove duplicate Strings from the given array.
     * Also sorts the array, as it uses a TreeSet.
     *
     * @param array the String array
     * @return an array without duplicates, in natural sort order
     */
    public static String[] removeDuplicateStrings(String[] array) {
        if (ObjectKit.isEmpty(array)) {
            return array;
        }
        Set<String> set = new TreeSet<String>();
        for (String element : array) {
            set.add(element);
        }
        return toStringArray(set);
    }

    /**
     * Split a String at the first occurrence of the delimiter.
     * Does not include the delimiter in the result.
     *
     * @param toSplit   the string to split
     * @param delimiter to split the string up with
     * @return a two element array with index 0 being before the delimiter, and
     * index 1 being after the delimiter (neither element includes the delimiter);
     * or {@code null} if the delimiter wasn't found in the given input String
     */
    public static String[] split(String toSplit, String delimiter) {
        if (!hasLength(toSplit) || !hasLength(delimiter)) {
            return null;
        }
        int offset = toSplit.indexOf(delimiter);
        if (offset < 0) {
            return null;
        }
        String beforeDelimiter = toSplit.substring(0, offset);
        String afterDelimiter = toSplit.substring(offset + delimiter.length());
        return new String[]{beforeDelimiter, afterDelimiter};
    }

    /**
     * Take an array Strings and split each element based on the given delimiter.
     * A {@code Properties} instance is then generated, with the left of the
     * delimiter providing the key, and the right of the delimiter providing the value.
     *
Will trim both the key and value before adding them to the
     * {@code Properties} instance.
     *
     * @param array     the array to process
     * @param delimiter to split each element using (typically the equals symbol)
     * @return a {@code Properties} instance representing the array contents,
     * or {@code null} if the array to process was null or empty
     */
    public static Properties splitArrayElementsIntoProperties(String[] array, String delimiter) {
        return splitArrayElementsIntoProperties(array, delimiter, null);
    }

    /**
     * Take an array Strings and split each element based on the given delimiter.
     * A {@code Properties} instance is then generated, with the left of the
     * delimiter providing the key, and the right of the delimiter providing the value.
     *
Will trim both the key and value before adding them to the
     * {@code Properties} instance.
     *
     * @param array         the array to process
     * @param delimiter     to split each element using (typically the equals symbol)
     * @param charsToDelete one or more characters to remove from each element
     *                      prior to attempting the split operation (typically the quotation mark
     *                      symbol), or {@code null} if no removal should occur
     * @return a {@code Properties} instance representing the array contents,
     * or {@code null} if the array to process was {@code null} or empty
     */
    public static Properties splitArrayElementsIntoProperties(
            String[] array, String delimiter, String charsToDelete) {

        if (ObjectKit.isEmpty(array)) {
            return null;
        }
        Properties result = new Properties();
        for (String element : array) {
            if (charsToDelete != null) {
                element = deleteAny(element, charsToDelete);
            }
            String[] splittedElement = split(element, delimiter);
            if (splittedElement == null) {
                continue;
            }
            result.setProperty(splittedElement[0].trim(), splittedElement[1].trim());
        }
        return result;
    }

    /**
     * Tokenize the given String into a String array via a StringTokenizer.
     * Trims tokens and omits empty tokens.
     *
The given delimiters string is supposed to consist of any number of
     * delimiter characters. Each of those characters can be used to separate
     * tokens. A delimiter is always a single character; for multi-character
     * delimiters, consider using {@code delimitedListToStringArray}
     *
     * @param str        the String to tokenize
     * @param delimiters the delimiter characters, assembled as String
     *                   (each of those characters is individually considered as delimiter).
     * @return an array of the tokens
     * @see java.util.StringTokenizer
     * @see String#trim()
     * @see #delimitedListToStringArray
     */
    public static String[] tokenizeToStringArray(String str, String delimiters) {
        return tokenizeToStringArray(str, delimiters, true, true);
    }

    /**
     * Tokenize the given String into a String array via a StringTokenizer.
     *
The given delimiters string is supposed to consist of any number of
     * delimiter characters. Each of those characters can be used to separate
     * tokens. A delimiter is always a single character; for multi-character
     * delimiters, consider using {@code delimitedListToStringArray}
     *
     * @param str               the String to tokenize
     * @param delimiters        the delimiter characters, assembled as String
     *                          (each of those characters is individually considered as delimiter)
     * @param trimTokens        trim the tokens via String's {@code trim}
     * @param ignoreEmptyTokens omit empty tokens from the result array
     *                          (only applies to tokens that are empty after trimming; StringTokenizer
     *                          will not consider subsequent delimiters as token in the first place).
     * @return an array of the tokens ({@code null} if the input String
     * was {@code null})
     * @see java.util.StringTokenizer
     * @see String#trim()
     * @see #delimitedListToStringArray
     */
    public static String[] tokenizeToStringArray(
            String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) {

        if (str == null) {
            return null;
        }
        StringTokenizer st = new StringTokenizer(str, delimiters);
        List<String> tokens = new ArrayList<String>();
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            if (trimTokens) {
                token = token.trim();
            }
            if (!ignoreEmptyTokens || token.length() > 0) {
                tokens.add(token);
            }
        }
        return toStringArray(tokens);
    }

    /**
     * Take a String which is a delimited list and convert it to a String array.
     *
A single delimiter can consists of more than one character: It will still
     * be considered as single delimiter string, rather than as bunch of potential
     * delimiter characters - in contrast to {@code tokenizeToStringArray}.
     *
     * @param str       the input String
     * @param delimiter the delimiter between elements (this is a single delimiter,
     *                  rather than a bunch individual delimiter characters)
     * @return an array of the tokens in the list
     * @see #tokenizeToStringArray
     */
    public static String[] delimitedListToStringArray(String str, String delimiter) {
        return delimitedListToStringArray(str, delimiter, null);
    }

    /**
     * Take a String which is a delimited list and convert it to a String array.
     *
A single delimiter can consists of more than one character: It will still
     * be considered as single delimiter string, rather than as bunch of potential
     * delimiter characters - in contrast to {@code tokenizeToStringArray}.
     *
     * @param str           the input String
     * @param delimiter     the delimiter between elements (this is a single delimiter,
     *                      rather than a bunch individual delimiter characters)
     * @param charsToDelete a set of characters to delete. Useful for deleting unwanted
     *                      line breaks: e.g. "\r\n\f" will delete all new lines and line feeds in a String.
     * @return an array of the tokens in the list
     * @see #tokenizeToStringArray
     */
    public static String[] delimitedListToStringArray(String str, String delimiter, String charsToDelete) {
        if (str == null) {
            return new String[0];
        }
        if (delimiter == null) {
            return new String[]{str};
        }
        List<String> result = new ArrayList<String>();
        if ("".equals(delimiter)) {
            for (int i = 0; i < str.length(); i++) {
                result.add(deleteAny(str.substring(i, i + 1), charsToDelete));
            }
        } else {
            int pos = 0;
            int delPos;
            while ((delPos = str.indexOf(delimiter, pos)) != -1) {
                result.add(deleteAny(str.substring(pos, delPos), charsToDelete));
                pos = delPos + delimiter.length();
            }
            if (str.length() > 0 && pos <= str.length()) {
                // Add rest of String, but not in case of empty input.
                result.add(deleteAny(str.substring(pos), charsToDelete));
            }
        }
        return toStringArray(result);
    }

    /**
     * Convert a CSV list into an array of Strings.
     *
     * @param str the input String
     * @return an array of Strings, or the empty array in case of empty input
     */
    public static String[] commaDelimitedListToStringArray(String str) {
        return delimitedListToStringArray(str, ",");
    }

    /**
     * Convenience method to convert a CSV string list to a set.
     * Note that this will suppress duplicates.
     *
     * @param str the input String
     * @return a Set of String entries in the list
     */
    public static Set<String> commaDelimitedListToSet(String str) {
        Set<String> set = new TreeSet<String>();
        String[] tokens = commaDelimitedListToStringArray(str);
        for (String token : tokens) {
            set.add(token);
        }
        return set;
    }

    /**
     * Convenience method to return a Collection as a delimited (e.g. CSV)
     * String. E.g. useful for {@code toString()} implementations.
     *
     * @param coll   the Collection to display
     * @param delim  the delimiter to use (probably a ",")
     * @param prefix the String to start each element with
     * @param suffix the String to end each element with
     * @return the delimited String
     */
    public static String collectionToDelimitedString(Collection<?> coll, String delim, String prefix, String suffix) {
        if (CollectionKit.isEmpty(coll)) {
            return "";
        }
        StringBuilder sb = new StringBuilder();
        Iterator<?> it = coll.iterator();
        while (it.hasNext()) {
            sb.append(prefix).append(it.next()).append(suffix);
            if (it.hasNext()) {
                sb.append(delim);
            }
        }
        return sb.toString();
    }

    /**
     * Convenience method to return a Collection as a delimited (e.g. CSV)
     * String. E.g. useful for {@code toString()} implementations.
     *
     * @param coll  the Collection to display
     * @param delim the delimiter to use (probably a ",")
     * @return the delimited String
     */
    public static String collectionToDelimitedString(Collection<?> coll, String delim) {
        return collectionToDelimitedString(coll, delim, "", "");
    }

    /**
     * Convenience method to return a Collection as a CSV String.
     * E.g. useful for {@code toString()} implementations.
     *
     * @param coll the Collection to display
     * @return the delimited String
     */
    public static String collectionToCommaDelimitedString(Collection<?> coll) {
        return collectionToDelimitedString(coll, ",");
    }

    /**
     * Convenience method to return a String array as a delimited (e.g. CSV)
     * String. E.g. useful for {@code toString()} implementations.
     *
     * @param arr   the array to display
     * @param delim the delimiter to use (probably a ",")
     * @return the delimited String
     */
    public static String arrayToDelimitedString(Object[] arr, String delim) {
        if (ObjectKit.isEmpty(arr)) {
            return "";
        }
        if (arr.length == 1) {
            return ObjectKit.nullSafeToString(arr[0]);
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < arr.length; i++) {
            if (i > 0) {
                sb.append(delim);
            }
            sb.append(arr[i]);
        }
        return sb.toString();
    }

    /**
     * Convenience method to return a String array as a CSV String.
     * E.g. useful for {@code toString()} implementations.
     *
     * @param arr the array to display
     * @return the delimited String
     */
    public static String arrayToCommaDelimitedString(Object[] arr) {
        return arrayToDelimitedString(arr, ",");
    }

    public static String smsAuthCode(int codeLen) {
        return smsAuthCode(codeLen, SMSAuthCodeType.Numbers);
    }

    public static String smsAuthCode(int codeLen, SMSAuthCodeType type) {
        String randomCode = "";
        String strTable = type == SMSAuthCodeType.Numbers ? "1234567890"
                : "1234567890abcdefghijkmnpqrstuvwxyz";
        int len = strTable.length();
        boolean bDone = true;
        do {
            randomCode = "";
            int count = 0;
            for (int i = 0; i < codeLen; i++) {
                double dblR = Math.random() * len;
                int intR = (int) Math.floor(dblR);
                char c = strTable.charAt(intR);
                if (('0' <= c) && (c <= '9')) {
                    count++;
                }
                randomCode += strTable.charAt(intR);
            }
            if (count >= 2) {
                bDone = false;
            }
        } while (bDone);

        return randomCode.toUpperCase();
    }

    public static String randomStr() {
        return UUID.randomUUID().toString().replace("-", "");
    }

    /**
     * 是中文字符吗?
     *
     * @param c 待判定字符
     * @return 判断结果
     */
    public static boolean isChineseCharacter(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        return ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
                || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION;
    }

    /**
     * 判断字符是否为全角字符
     *
     * @param c 字符
     * @return 判断结果
     */
    public static boolean isFullWidthCharacter(char c) {
        // 全角空格为12288，半角空格为32
        // 其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
        // 全角空格 || 其他全角字符
        if (c == 12288 || (c > 65280 && c < 65375)) {
            return true;
        }
        // 中文全部是全角
        if (isChineseCharacter(c)) {
            return true;
        }
        // 日文判断
        // 全角平假名 u3040 - u309F
        // 全角片假名 u30A0 - u30FF
        return c >= '\u3040' && c <= '\u30FF';
    }

    /**
     * 转换成半角字符
     *
     * @param c 待转换字符
     * @return 转换后的字符
     */
    public static char toHalfWidthCharacter(char c) {
        if (c == 12288) {
            return (char) 32;
        } else if (c > 65280 && c < 65375) {
            return (char) (c - 65248);
        }
        return c;
    }

    /**
     * 转换为半角字符串
     *
     * @param str 待转换字符串
     * @return 转换后的字符串
     */
    public static String toHalfWidthString(CharSequence str) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < str.length(); i++) {
            sb.append(toHalfWidthCharacter(str.charAt(i)));
        }
        return sb.toString();
    }

    /**
     * 判断是否是全角字符串(所有字符都是全角)
     *
     * @param str 被判断的字符串
     * @return 判断结果
     */
    public static boolean isFullWidthString(CharSequence str) {
        return charLength(str) == str.length() * 2;
    }

    /**
     * 判断是否是半角字符串(所有字符都是半角)
     *
     * @param str 被判断的字符串
     * @return 判断结果
     */
    public static boolean isHalfWidthString(CharSequence str) {
        return charLength(str) == str.length();
    }

    /**
     * 计算字符串的字符长度(全角算2, 半角算1)
     *
     * @param str 被计算的字符串
     * @return 字符串的字符长度
     */
    public static int charLength(CharSequence str) {
        int clength = 0;
        for (int i = 0; i < str.length(); i++) {
            clength += isFullWidthCharacter(str.charAt(i)) ? 2 : 1;
        }
        return clength;
    }

    /**
     * 复制字符串
     *
     * @param cs  字符串
     * @param num 数量
     * @return 新字符串
     */
    public static String dup(CharSequence cs, int num) {
        if (isEmpty(cs) || num <= 0)
            return "";
        StringBuilder sb = new StringBuilder(cs.length() * num);
        for (int i = 0; i < num; i++)
            sb.append(cs);
        return sb.toString();
    }

    /**
     * 复制字符
     *
     * @param c   字符
     * @param num 数量
     * @return 新字符串
     */
    public static String dup(char c, int num) {
        if (c == 0 || num < 1)
            return "";
        StringBuilder sb = new StringBuilder(num);
        for (int i = 0; i < num; i++)
            sb.append(c);
        return sb.toString();
    }

    /**
     * 将字符串首字母大写
     *
     * @param s 字符串
     * @return 首字母大写后的新字符串
     * @deprecated 推荐使用 {@link #upperFirst(CharSequence)}
     */
    public static String capitalize(CharSequence s) {
        return upperFirst(s);
    }

    /**
     * 将字符串首字母小写
     *
     * @param s 字符串
     * @return 首字母小写后的新字符串
     */
    public static String lowerFirst(CharSequence s) {
        if (null == s)
            return null;
        int len = s.length();
        if (len == 0)
            return "";
        char c = s.charAt(0);
        if (Character.isLowerCase(c))
            return s.toString();
        return String.valueOf(Character.toLowerCase(c)) + s.subSequence(1, len);
    }

    /**
     * 将字符串首字母大写
     *
     * @param s 字符串
     * @return 首字母大写后的新字符串
     */
    public static String upperFirst(CharSequence s) {
        if (null == s)
            return null;
        int len = s.length();
        if (len == 0)
            return "";
        char c = s.charAt(0);
        if (Character.isUpperCase(c))
            return s.toString();
        return String.valueOf(Character.toUpperCase(c)) + s.subSequence(1, len);
    }

    /**
     * 检查两个字符串的忽略大小写后是否相等.
     *
     * @param s1 字符串A
     * @param s2 字符串B
     * @return true 如果两个字符串忽略大小写后相等,且两个字符串均不为null
     */
    public static boolean equalsIgnoreCase(String s1, String s2) {
        return s1 == null ? s2 == null : s1.equalsIgnoreCase(s2);
    }

    /**
     * 检查两个字符串是否相等.
     *
     * @param s1 字符串A
     * @param s2 字符串B
     * @return true 如果两个字符串相等,且两个字符串均不为null
     */
    public static boolean equals(String s1, String s2) {
        return s1 == null ? s2 == null : s1.equals(s2);
    }

    /**
     * 判断字符串是否以特殊字符开头
     *
     * @param s 字符串
     * @param c 特殊字符
     * @return 是否以特殊字符开头
     */
    public static boolean startsWithChar(String s, char c) {
        return null != s && (s.length() != 0 && s.charAt(0) == c);
    }

    /**
     * 判断字符串是否以特殊字符结尾
     *
     * @param s 字符串
     * @param c 特殊字符
     * @return 是否以特殊字符结尾
     */
    public static boolean endsWithChar(String s, char c) {
        return null != s && (s.length() != 0 && s.charAt(s.length() - 1) == c);
    }

    /**
     * 如果此字符串为 null 或者为空串（""），则返回 true
     *
     * @param cs 字符串
     * @return 如果此字符串为 null 或者为空，则返回 true
     */
    public static boolean isEmpty(CharSequence cs) {
        return null == cs || cs.length() == 0;
    }

    /**
     * 如果此字符串为 null 或者全为空白字符，则返回 true
     *
     * @param cs 字符串
     * @return 如果此字符串为 null 或者全为空白字符，则返回 true
     */
    public static boolean isBlank(CharSequence cs) {
        if (null == cs)
            return true;
        int length = cs.length();
        for (int i = 0; i < length; i++) {
            if (!(Character.isWhitespace(cs.charAt(i))))
                return false;
        }
        return true;
    }

    /**
     * 去掉字符串前后空白字符。空白字符的定义由Character.isWhitespace来判断
     *
     * @param cs 字符串
     * @return 去掉了前后空白字符的新字符串
     */
    public static String trim(CharSequence cs) {
        if (null == cs)
            return null;
        int length = cs.length();
        if (length == 0)
            return cs.toString();
        int l = 0;
        int last = length - 1;
        int r = last;
        for (; l < length; l++) {
            if (!Character.isWhitespace(cs.charAt(l)))
                break;
        }
        for (; r > l; r--) {
            if (!Character.isWhitespace(cs.charAt(r)))
                break;
        }
        if (l > r)
            return "";
        else if (l == 0 && r == last)
            return cs.toString();
        return cs.subSequence(l, r + 1).toString();
    }

    /**
     * 将给定字符串，变成 "xxx...xxx" 形式的字符串
     *
     * @param str 字符串
     * @param len 最大长度
     * @return 紧凑的字符串
     */
    public static String brief(String str, int len) {
        if (Strs.isBlank(str) || (str.length() + 3) <= len)
            return str;
        int w = len / 2;
        int l = str.length();
        return str.substring(0, len - w) + " ... " + str.substring(l - w);
    }

    /**
     * 将字符串按半角逗号，拆分成数组，空元素将被忽略
     *
     * @param s 字符串
     * @return 字符串数组
     */
    public static String[] splitIgnoreBlank(String s) {
        return Strs.splitIgnoreBlank(s, ",");
    }

    /**
     * 根据一个正则式，将字符串拆分成数组，空元素将被忽略
     *
     * @param s     字符串
     * @param regex 正则式
     * @return 字符串数组
     */
    public static String[] splitIgnoreBlank(String s, String regex) {
        if (null == s)
            return null;
        String[] ss = s.split(regex);
        List<String> list = new LinkedList<String>();
        for (String st : ss) {
            if (isBlank(st))
                continue;
            list.add(trim(st));
        }
        return list.toArray(new String[list.size()]);
    }

    /**
     * 将一个整数转换成最小长度为某一固定数值的十进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String fillDigit(int d, int width) {
        return Strs.alignRight(String.valueOf(d), width, '0');
    }

    /**
     * 将一个整数转换成最小长度为某一固定数值的十六进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String fillHex(int d, int width) {
        return Strs.alignRight(Integer.toHexString(d), width, '0');
    }

    /**
     * 将一个整数转换成最小长度为某一固定数值的二进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String fillBinary(int d, int width) {
        return Strs.alignRight(Integer.toBinaryString(d), width, '0');
    }

    /**
     * 将一个整数转换成固定长度的十进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String toDigit(int d, int width) {
        return Strs.cutRight(String.valueOf(d), width, '0');
    }

    /**
     * 将一个整数转换成固定长度的十六进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String toHex(int d, int width) {
        return Strs.cutRight(Integer.toHexString(d), width, '0');
    }

    /**
     * 将一个整数转换成固定长度的二进制形式字符串
     *
     * @param d     整数
     * @param width 宽度
     * @return 新字符串
     */
    public static String toBinary(int d, int width) {
        return Strs.cutRight(Integer.toBinaryString(d), width, '0');
    }

    /**
     * 保证字符串为一固定长度。超过长度，切除左侧字符，否则左侧填补字符。
     *
     * @param s     字符串
     * @param width 长度
     * @param c     补字符
     * @return 修饰后的字符串
     */
    public static String cutRight(String s, int width, char c) {
        if (null == s)
            return null;
        int len = s.length();
        if (len == width)
            return s;
        if (len < width)
            return Strs.dup(c, width - len) + s;
        return s.substring(len - width, len);
    }

    /**
     * 保证字符串为一固定长度。超过长度，切除右侧字符，否则右侧填补字符。
     *
     * @param s     字符串
     * @param width 长度
     * @param c     补字符
     * @return 修饰后的字符串
     */
    public static String cutLeft(String s, int width, char c) {
        if (null == s)
            return null;
        int len = s.length();
        if (len == width)
            return s;
        if (len < width)
            return s + Strs.dup(c, width - len);
        return s.substring(0, width);
    }

    /**
     * 在字符串左侧填充一定数量的特殊字符
     *
     * @param o     可被 toString 的对象
     * @param width 字符数量
     * @param c     字符
     * @return 新字符串
     */
    public static String alignRight(Object o, int width, char c) {
        if (null == o)
            return null;
        String s = o.toString();
        int len = s.length();
        if (len >= width)
            return s;
        return dup(c, width - len) + s;
    }

    /**
     * 在字符串右侧填充一定数量的特殊字符
     *
     * @param o     可被 toString 的对象
     * @param width 字符数量
     * @param c     字符
     * @return 新字符串
     */
    public static String alignLeft(Object o, int width, char c) {
        if (null == o)
            return null;
        String s = o.toString();
        int length = s.length();
        if (length >= width)
            return s;
        return s + dup(c, width - length);
    }

    /**
     * 测试此字符串是否被指定的左字符和右字符所包裹；如果该字符串左右两边有空白的时候，会首先忽略这些空白
     *
     * @param cs 字符串
     * @param lc 左字符
     * @param rc 右字符
     * @return 字符串是被左字符和右字符包裹
     */
    public static boolean isQuoteByIgnoreBlank(CharSequence cs, char lc, char rc) {
        if (null == cs)
            return false;
        int len = cs.length();
        if (len < 2)
            return false;
        int l = 0;
        int last = len - 1;
        int r = last;
        for (; l < len; l++) {
            if (!Character.isWhitespace(cs.charAt(l)))
                break;
        }
        if (cs.charAt(l) != lc)
            return false;
        for (; r > l; r--) {
            if (!Character.isWhitespace(cs.charAt(r)))
                break;
        }
        return l < r && cs.charAt(r) == rc;
    }

    /**
     * 测试此字符串是否被指定的左字符和右字符所包裹
     *
     * @param cs 字符串
     * @param lc 左字符
     * @param rc 右字符
     * @return 字符串是被左字符和右字符包裹
     */
    public static boolean isQuoteBy(CharSequence cs, char lc, char rc) {
        if (null == cs)
            return false;
        int length = cs.length();
        return length > 1 && cs.charAt(0) == lc && cs.charAt(length - 1) == rc;
    }

    /**
     * 测试此字符串是否被指定的左字符串和右字符串所包裹
     *
     * @param str 字符串
     * @param l   左字符串
     * @param r   右字符串
     * @return 字符串是被左字符串和右字符串包裹
     */
    public static boolean isQuoteBy(String str, String l, String r) {
        return !(null == str || null == l || null == r) && str.startsWith(l) && str.endsWith(r);
    }

    /**
     * 获得一个字符串集合中，最长串的长度
     *
     * @param coll 字符串集合
     * @return 最大长度
     */
    public static int maxLength(Collection<? extends CharSequence> coll) {
        int re = 0;
        if (null != coll)
            for (CharSequence s : coll)
                if (null != s)
                    re = Math.max(re, s.length());
        return re;
    }

    /**
     * 获得一个字符串数组中，最长串的长度
     *
     * @param array 字符串数组
     * @return 最大长度
     */
    public static <T extends CharSequence> int maxLength(T[] array) {
        int re = 0;
        if (null != array)
            for (CharSequence s : array)
                if (null != s)
                    re = Math.max(re, s.length());
        return re;
    }

    /**
     * 对指定对象进行 toString 操作；如果该对象为 null ，则返回空串（""）
     *
     * @param obj 指定的对象
     * @return 对指定对象进行 toString 操作；如果该对象为 null ，则返回空串（""）
     */
    public static String sNull(Object obj) {
        return sNull(obj, "");
    }

    /**
     * 对指定对象进行 toString 操作；如果该对象为 null ，则返回默认值
     *
     * @param obj 指定的对象
     * @param def 默认值
     * @return 对指定对象进行 toString 操作；如果该对象为 null ，则返回默认值
     */
    public static String sNull(Object obj, String def) {
        return obj != null ? obj.toString() : def;
    }

    /**
     * 对指定对象进行 toString 操作；如果该对象为 null ，则返回空串（""）
     *
     * @param obj 指定的对象
     * @return 对指定对象进行 toString 操作；如果该对象为 null ，则返回空串（""）
     */
    public static String sBlank(Object obj) {
        return sBlank(obj, "");
    }

    /**
     * 对指定对象进行 toString 操作；如果该对象为 null 或者 toString 方法为空串（""），则返回默认值
     *
     * @param obj 指定的对象
     * @param def 默认值
     * @return 对指定对象进行 toString 操作；如果该对象为 null 或者 toString 方法为空串（""），则返回默认值
     */
    public static String sBlank(Object obj, String def) {
        if (null == obj)
            return def;
        String s = obj.toString();
        return Strs.isBlank(s) ? def : s;
    }

    /**
     * 截去第一个字符
     *

     * 比如:
     *

     *
removeFirst("12345") => 2345
     *
removeFirst("A") => ""
     *

     *
     * @param str 字符串
     * @return 新字符串
     */
    public static String removeFirst(CharSequence str) {
        if (str == null)
            return null;
        if (str.length() > 1)
            return str.subSequence(1, str.length()).toString();
        return "";
    }

    /**
     * 如果str中第一个字符和 c一致,则删除,否则返回 str
     *

     * 比如:
     *

     *
removeFirst("12345",1) => "2345"
     *
removeFirst("ABC",'B') => "ABC"
     *
removeFirst("A",'B') => "A"
     *
removeFirst("A",'A') => ""
     *

     *
     * @param str 字符串
     * @param c   第一个个要被截取的字符
     * @return 新字符串
     */
    public static String removeFirst(String str, char c) {
        return (Strs.isEmpty(str) || c != str.charAt(0)) ? str : str.substring(1);
    }

    /**
     * 判断一个字符串数组是否包括某一字符串
     *
     * @param ss 字符串数组
     * @param s  字符串
     * @return 是否包含
     */
    public static boolean isin(String[] ss, String s) {
        if (null == ss || ss.length == 0 || Strs.isBlank(s))
            return false;
        for (String w : ss)
            if (s.equals(w))
                return true;
        return false;
    }

    /**
     * 检查一个字符串是否为合法的电子邮件地址
     *
     * @param input 需要检查的字符串
     * @return true 如果是有效的邮箱地址
     */
    public static boolean isEmail(String input) {
        return !Strs.isBlank(input) && Validator.isEmail(input);
    }

    /**
     * 将一个字符串由驼峰式命名变成分割符分隔单词
     *

     *

     *  lowerWord("helloWorld", '-') => "hello-world"
     *

     *
     * @param cs 字符串
     * @param c  分隔符
     * @return 转换后字符串
     */
    public static String lowerWord(CharSequence cs, char c) {
        StringBuilder sb = new StringBuilder();
        int len = cs.length();
        for (int i = 0; i < len; i++) {
            char ch = cs.charAt(i);
            if (Character.isUpperCase(ch)) {
                if (i > 0)
                    sb.append(c);
                sb.append(Character.toLowerCase(ch));
            } else {
                sb.append(ch);
            }
        }
        return sb.toString();
    }

    /**
     * 将一个字符串某一个字符后面的字母变成大写，比如
     *

     *

     *  upperWord("hello-world", '-') => "helloWorld"
     *

     *
     * @param cs 字符串
     * @param c  分隔符
     * @return 转换后字符串
     */
    public static String upperWord(CharSequence cs, char c) {
        StringBuilder sb = new StringBuilder();
        int len = cs.length();
        for (int i = 0; i < len; i++) {
            char ch = cs.charAt(i);
            if (ch == c) {
                do {
                    i++;
                    if (i >= len)
                        return sb.toString();
                    ch = cs.charAt(i);
                } while (ch == c);
                sb.append(Character.toUpperCase(ch));
            } else {
                sb.append(ch);
            }
        }
        return sb.toString();
    }

    /**
     * 将一个字符串出现的HMTL元素进行转义，比如
     *

     *

     *  escapeHtml("<script>alert("hello world");</script>") => "&lt;script&gt;alert(&quot;hello world&quot;);&lt;/script&gt;"
     *

     *

     * 转义字符对应如下
     *

     *
& => &amp;
     *
< => &lt;
     *
>=> &gt;
     *
' => &#x27;
     *
" => &quot;
     *

     *
     * @param cs 字符串
     * @return 转换后字符串
     */
    public static String escapeHtml(CharSequence cs) {
        if (null == cs)
            return null;
        char[] cas = cs.toString().toCharArray();
        StringBuilder sb = new StringBuilder();
        for (char c : cas) {
            switch (c) {
                case '&':
                    sb.append("&");
                    break;
                case '<':
                    sb.append("<");
                    break;
                case '>':
                    sb.append(">");
                    break;
                case '\'':
                    sb.append("'");
                    break;
                case '"':
                    sb.append(""");
                    break;
                default:
                    sb.append(c);
            }
        }
        return sb.toString();
    }

    /**
     * 使用 UTF-8 编码将字符串编码为 byte 序列，并将结果存储到新的 byte 数组
     *
     * @param cs 字符串
     * @return UTF-8编码后的 byte 数组
     */
    public static byte[] getBytesUTF8(CharSequence cs) {
        return cs.toString().getBytes(Charsets.UTF_8);
    }

    /**
     * 将数字转为十六进制字符串, 默认要使用2个字符(暂时没考虑负数)
     *
     * @param n 数字
     * @return 十六进制字符串
     */
    public static String num2hex(int n) {
        String s = Integer.toHexString(n);
        return n <= 15 ? "0" + s : s;
    }

    // ####### 几个常用的color相关的字符串转换放这里 ########

    /**
     * 十六进制字符串转换为数字
     *
     * @param hex 十六进制字符串
     * @return 十进制数字
     */
    public static int hex2num(String hex) {
        return Integer.parseInt(hex, 16);
    }

    /**
     * 将一个字节数变成人类容易识别的显示字符串，比如 1.5M 等
     *
     * @param size 字节数
     * @param SZU  千的单位，可能为 1024 或者 1000
     * @return 人类容易阅读的字符串
     */
    private static String _formatSizeForRead(long size, double SZU) {
        if (size < SZU) {
            return String.format("%d bytes", size);
        }
        double n = (double) size / SZU;
        if (n < SZU) {
            return String.format("%5.2f KB", n);
        }
        n = n / SZU;
        if (n < SZU) {
            return String.format("%5.2f MB", n);
        }
        n = n / SZU;
        return String.format("%5.2f GB", n);
    }

    /**
     * @see #_formatSizeForRead(long, double)
     */
    public static String formatSizeForReadBy1024(long size) {
        return _formatSizeForRead(size, 1024);
    }

    /**
     * @see #_formatSizeForRead(long, double)
     */
    public static String formatSizeForReadBy1000(long size) {
        return _formatSizeForRead(size, 1000);
    }

    /**
     * Stitching LIKE SQL percent.
     *
     * @param value value
     * @return SQL LIKE expression.
     */
    public static String like(String value) {
        return StringPool.PERCENT + Strings.nullToEmpty(value) + StringPool.PERCENT;
    }

    /**
     * Stitching LEFT LIKE SQL percent.
     *
     * @param value value
     * @return SQL LIKE expression.
     */
    public static String llike(String value) {
        return StringPool.PERCENT + Strings.nullToEmpty(value);
    }

    /**
     * Stitching Right LIKE SQL percent.
     *
     * @param value value
     * @return SQL LIKE expression.
     */
    public static String rlike(String value) {
        return Strings.nullToEmpty(value) + StringPool.PERCENT;
    }

    public enum SMSAuthCodeType {
        Numbers,
        CharAndNumbers,
    }

}


/*
 * Copyright 2010-2013, CloudBees Inc.
 *
 * 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.cloudbees.sdk.extensibility.lifecycle;

import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Base implementation for components that run periodical background task.
 *
 * @author Kohsuke Kawaguchi
 */
public abstract class PeriodicService implements Startable {
    public void start() throws Exception {
        new Timer().schedule(new TimerTask() {
            @Override
            public void run() {
                try {
                    PeriodicService.this.doRun();
                } catch (Throwable e) {
                    LOGGER.log(Level.SEVERE, "Periodic task failed", e);
                }
            }
        }, getInitialDelay(), getPeriod());
    }

    /**
     * Executes the periodic task.
     */
    protected abstract void run() throws Exception;

    private final AtomicBoolean inProgress = new AtomicBoolean();

    /**
     * Run from the web interface.
     *
     * @throws Exception
     */
    public void doRun() throws Exception {
        if (inProgress.compareAndSet(false,true)) {
            try {
                run();
            } finally {
                inProgress.set(false);
            }
        } else {
            throw new IllegalStateException("Another run is already in progress");
        }
    }

    /**
     * Cycle of execution, in milliseconds.
     */
    protected abstract long getPeriod();

    /**
     * Initial delay in milliseconds to run the first execution, in milliseconds.
     */
    protected long getInitialDelay() {
        return getPeriod();
    }

    private static final Logger LOGGER = Logger.getLogger(PeriodicService.class.getName());

}


package goja.rapid.ueditor.define;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

import goja.rapid.ueditor.kit.UEKit;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * 多状态集合状态
 * 其包含了多个状态的集合, 其本身自己也是一个状态
 *
 * @author hancong03@baidu.com
 */
public class MultiState implements State {

    private boolean             state     = false;
    private String              info      = null;
    private Map<String, Long>   intMap    = Maps.newHashMap();
    private Map<String, String> infoMap   = Maps.newHashMap();
    private List<String>        stateList = Lists.newArrayList();

    public MultiState(boolean state) {
        this.state = state;
    }

    public MultiState(boolean state, String info) {
        this.state = state;
        this.info = info;
    }

    public MultiState(boolean state, int infoKey) {
        this.state = state;
        this.info = AppInfo.getStateInfo(infoKey);
    }

    @Override
    public boolean isSuccess() {
        return this.state;
    }

    public void addState(State state) {
        stateList.add(state.toJSONString());
    }

    /**
     * 该方法调用无效果
     */
    @Override
    public void putInfo(String name, String val) {
        this.infoMap.put(name, val);
    }

    @Override
    public String toJSONString() {

        String stateVal = this.isSuccess() ? AppInfo.getStateInfo(AppInfo.SUCCESS) : this.info;

        StringBuilder builder = new StringBuilder();

        builder.append("{\"state\": \"").append(stateVal).append("\"");

        // 数字转换
        Iterator<String> iterator = this.intMap.keySet().iterator();

        while (iterator.hasNext()) {

            stateVal = iterator.next();

            builder.append(",\"" + stateVal + "\": " + this.intMap.get(stateVal));

        }

        iterator = this.infoMap.keySet().iterator();

        while (iterator.hasNext()) {

            stateVal = iterator.next();

            builder.append(",\"" + stateVal + "\": \"" + this.infoMap.get(stateVal) + "\"");

        }

        builder.append(", list: [");

        iterator = this.stateList.iterator();

        while (iterator.hasNext()) {

            builder.append(iterator.next() + ",");

        }

        if (this.stateList.size() > 0) {
            builder.deleteCharAt(builder.length() - 1);
        }

        builder.append(" ]}");

        return UEKit.toUnicode(builder.toString());

    }

    @Override
    public void putInfo(String name, long val) {
        this.intMap.put(name, val);
    }

}


/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013-2014 sagyf Yang. The Four Group.
 */

package goja.security.goja;

import com.google.common.base.Function;

import com.jfinal.plugin.activerecord.Model;
import com.jfinal.plugin.ehcache.CacheKit;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.SecureRandom;
import java.util.Enumeration;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import goja.Goja;
import goja.core.StringPool;
import goja.core.encry.DigestsKit;
import goja.core.encry.EncodeKit;
import goja.mvc.kits.Requests;

/**
 * <p> The Security Kit. </p>
 *
 * @author sagyf yang
 * @version 1.0 2014-02-12 22:15
 * @since JDK 1.6
 */
public class SecurityKit {
    /**
     * 登录存储在客户端的用户Session标识
     */
    public final static  String COOKIE_LOGIN      = Goja.appName + "_session_id";
    /**
     * 登录的SESSION。KEY
     */
    private static final String LOGIN_SESSION_KEY = Goja.appName + "#$session$login_user";
    /**
     * 登录的会员IDSession信息
     */
    private static final String LOGIN_MEMBER_ID   = Goja.appName + "@session#member%id";

    private static final String LOGIN_CACHE_SESSION = "login.session";

    private final static byte[] E_KEY   = new byte[]{'1', '2', '3', '4', '5', '6', '7', '8'};
    private final static String DES     = "DES";
    private final static int    MAX_AGE = 86400 * 365;

    /**
     * Determine whether the user is logged in, if you have logged in, return <code> true </ code>
     *
     * @param request http request.
     * @return has loginned.
     */
    public static boolean isLogin(HttpServletRequest request) {
        return getLoginUser(request) != null;
    }

    /**
     * Check the user's password, and execute the login request
     *
     * @param user     user.
     * @param password password.
     * @param remember has remember.
     * @param request  request.
     * @param response http response.
     * @param <T>      User type.
     * @return True login Success.
     */
    public static <T extends Model> boolean login(T user, String password, boolean remember
            , HttpServletRequest request, HttpServletResponse response) {
        boolean matcher =
                SecurityKit.checkPassword(user.getStr("salt"), user.getStr("password"), password);
        if (matcher) {
            SecurityKit.setLoginMember(request, response, user, remember);
        }
        return matcher;
    }

    /**
     * logout
     *
     * @param req      http request
     * @param response http response
     */
    public static <T extends Model> void logout(HttpServletRequest req,
                                                HttpServletResponse response) {
        CookieUser cookie_user = getUserFromCookie(req);
        Requests.deleteCookie(req, response, COOKIE_LOGIN, true);
        // 清理Cache
        if (cookie_user != null) {
            CacheKit.remove(LOGIN_CACHE_SESSION, LOGIN_CACHE_SESSION + cookie_user.getId());
        } else {
            T user = getLoginUser(req);
            if (user != null) {
                CacheKit.remove(LOGIN_CACHE_SESSION,
                        LOGIN_CACHE_SESSION + user.getNumber(StringPool.PK_COLUMN));
            }
        }
        //清除session
        Enumeration<String> em = req.getSession().getAttributeNames();
        while (em.hasMoreElements()) {
            final String key = em.nextElement();
            req.getSession().removeAttribute(key);
        }
        req.getSession().invalidate();
    }

    /**
     * Get user login information, if the session does not exist, then try to obtain from the
     * Cookie, if cookie exists, then decrypt obtain user information.
     *
     * @param req      requeset
     * @param response http response
     * @param function call function.
     * @return user login information.
     */
    public static <T extends Model> T getLoginWithDb(HttpServletRequest req
            , HttpServletResponse response
            , Function<Long, T> function) {
        T loginUser = getLoginUser(req);
        if (loginUser == null) {
            //从Cookie中解析出用户id
            CookieUser cookie_user = getUserFromCookie(req);
            if (cookie_user == null) return null;
            T user = CacheKit.get(LOGIN_CACHE_SESSION, LOGIN_CACHE_SESSION + cookie_user.getId());
            if (user == null) {
                user = function.apply(cookie_user.getId());
                CacheKit.put(LOGIN_CACHE_SESSION, LOGIN_CACHE_SESSION + cookie_user.getId(), user);
            }
            // 用户密码和cookie中存储的密码一致
            if (user != null && StringUtils.equalsIgnoreCase(user.getStr("password"),
                    cookie_user.getPassword())) {
                setLoginMember(req, response, user, true);
                return user;
            } else {
                return null;
            }
        } else {
            return loginUser;
        }
    }

    /**
     * Obtain user information from the Session
     *
     * @param req request
     * @return user infomation.
     */
    public static <T extends Model> T getLoginUser(HttpServletRequest req) {
        return (T) req.getSession().getAttribute(LOGIN_SESSION_KEY);
    }

    /**
     * Sign settings
     *
     * @param request  request.
     * @param response response
     * @param user     The logged user.
     * @param remember is remember.
     */
    private static <T extends Model> void setLoginMember(HttpServletRequest request,
                                                         HttpServletResponse response,
                                                         T user, boolean remember) {
        request.getSession().setAttribute(LOGIN_SESSION_KEY, user);
        request.getSession().setAttribute(LOGIN_MEMBER_ID, user.getNumber(StringPool.PK_COLUMN));
        saveMemberInCookie(user, remember, request, response);
    }

    /**
     * Check Password , salt, password, planpassword.
     *
     * @param salt          salt
     * @param password      password.
     * @param plainPassword plain password.
     * @return true, in user.
     */
    public static boolean checkPassword(String salt, String password, String plainPassword) {
        byte[] saltHex = EncodeKit.decodeHex(salt);
        byte[] hashPassword =
                DigestsKit.sha1(plainPassword.getBytes(), saltHex, EncodeKit.HASH_INTERATIONS);
        return StringUtils.equals(EncodeKit.encodeHex(hashPassword), password);
    }

    /**
     * Store user information in a cookie logged in.
     *
     * @param user     The user has logged on.
     * @param save     has save.
     * @param request  request
     * @param response http response
     */
    public static <T extends Model> void saveMemberInCookie(T user, boolean save,
                                                            HttpServletRequest request, HttpServletResponse response) {
        String new_value =
                getLoginKey(user, Requests.remoteIP(request), request.getHeader("user-agent"));
        int max_age = save ? MAX_AGE : -1;
        Requests.deleteCookie(request, response, COOKIE_LOGIN, true);
        Requests.setCookie(request, response, COOKIE_LOGIN, new_value, max_age, true);
    }

    /**
     * Generating system user login ID string.
     *
     * @param user       The user has logged on.
     * @param ip         The login ip.
     * @param user_agent http agent.
     * @return User login identification string
     */
    private static <T extends Model> String getLoginKey(T user, String ip, String user_agent) {
        return encrypt(String.valueOf(user.getNumber(StringPool.PK_COLUMN)) + '|'
                + user.getStr("password") + '|' + ip + '|' + ((user_agent == null) ? 0
                : user_agent.hashCode()) + '|' + System.currentTimeMillis());
    }

    /**
     * encrypt
     *
     * @param src src
     * @param key key
     * @return encrypt string
     * @throws RuntimeException error.
     */
    private static byte[] encrypt(byte[] src, byte[] key) throws RuntimeException {
        //		DES算法要求有一个可信任的随机数源
        try {
            SecureRandom sr = new SecureRandom();
            // 从原始密匙数据创建DESKeySpec对象
            DESKeySpec dks = new DESKeySpec(key);
            // 创建一个密匙工厂，然后用它把DESKeySpec转换成
            // 一个SecretKey对象
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
            SecretKey securekey = keyFactory.generateSecret(dks);
            // Cipher对象实际完成加密操作
            Cipher cipher = Cipher.getInstance(DES);
            // 用密匙初始化Cipher对象
            cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
            // 现在，获取数据并加密
            // 正式执行加密操作
            return cipher.doFinal(src);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 从cookie中读取保存的用户信息
     *
     * @param req requeset 请求
     * @return 用户信息
     */
    private static CookieUser getUserFromCookie(HttpServletRequest req) {
        try {
            Cookie cookie = Requests.getCookie(req, COOKIE_LOGIN);
            if (cookie != null && StringUtils.isNotBlank(cookie.getValue())) {
                return userForCookie(cookie.getValue(), req);
            }
        } catch (Exception ignored) {
        }
        return null;
    }

    /**
     * encrypt
     *
     * @param value encry string
     * @return ciphertext.
     */
    private static String encrypt(String value) {
        byte[] data = encrypt(value.getBytes(), E_KEY);
        try {
            return URLEncoder.encode(new String(Base64.encodeBase64(data)), StringPool.UTF_8);
        } catch (UnsupportedEncodingException e) {
            return null;
        }
    }

    /**
     * Obtain user information from the Cookie
     *
     * @param uuid    ciphertext.
     * @param request request.
     * @return cookie user.
     */
    private static CookieUser userForCookie(String uuid, HttpServletRequest request) {
        if (StringUtils.isBlank(uuid)) {
            return null;
        }
        String ck = decrypt(uuid);
        final String[] items = StringUtils.split(ck, '|');
        if (items.length == 5) {
            String ua = request.getHeader("user-agent");
            int ua_code = (ua == null) ? 0 : ua.hashCode();
            int old_ua_code = Integer.parseInt(items[3]);
            if (ua_code == old_ua_code) {
                return new CookieUser(NumberUtils.toLong(items[0], -1L), items[1], false);
            }
        }
        return null;
    }

    /**
     * decrypt
     *
     * @param value ciphertext
     * @return Plaintext.
     */
    private static String decrypt(String value) {
        try {
            value = URLDecoder.decode(value, StringPool.UTF_8);
            if (StringUtils.isBlank(value)) return null;
            byte[] data = Base64.decodeBase64(value.getBytes());
            return new String(decrypt(data, E_KEY));
        } catch (UnsupportedEncodingException excp) {
            return null;
        }
    }

    /**
     * decrypt
     *
     * @param src ciphertext
     * @param key Key.
     * @return Plaintext
     * @throws RuntimeException cuowu
     */
    private static byte[] decrypt(byte[] src, byte[] key) throws RuntimeException {
        try {
            //		DES算法要求有一个可信任的随机数源
            SecureRandom sr = new SecureRandom();
            // 从原始密匙数据创建一个DESKeySpec对象
            DESKeySpec dks = new DESKeySpec(key);
            // 创建一个密匙工厂，然后用它把DESKeySpec对象转换成
            // 一个SecretKey对象
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
            SecretKey securekey = keyFactory.generateSecret(dks);
            // Cipher对象实际完成解密操作
            Cipher cipher = Cipher.getInstance(DES);
            // 用密匙初始化Cipher对象
            cipher.init(Cipher.DECRYPT_MODE, securekey, sr);
            // 现在，获取数据并解密
            // 正式执行解密操作
            return cipher.doFinal(src);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}


/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013-2014 sagyf Yang. The Four Group.
 */

package goja.mvc;

import com.alibaba.fastjson.JSON;

import org.apache.commons.lang3.StringUtils;

import java.io.Serializable;

import static goja.core.StringPool.EMPTY;

/**
 * <p> ajax请求返回信息 </p>
 *
 * @param <E> 数据格式
 * @author mumu@yfyang
 * @version 1.0 2013-08-10 12:27 PM
 * @since JDK 1.5
 */
public final class AjaxMessage<E> implements Serializable {

    public static final AjaxMessage OK        = ok(EMPTY, null);
    public static final AjaxMessage NODATA    = nodata(EMPTY, null);
    public static final AjaxMessage FORBIDDEN = forbidden(null);
    public static final AjaxMessage ERROR     = error(null);
    public static final AjaxMessage FAILURE   = failure(null);

    private static final long serialVersionUID = 1091092803607855861L;
    /**
     * Returns the message data
     */
    private final E data;

    /**
     * Message
     */
    private final String message;

    /**
     * Message State Machine.
     */
    private final MessageStatus status;
    /**
     * Exception
     */
    private final Exception     exception;

    /**
     * Message code.
     */
    private String code;

    /**
     * 构造函数
     *
     * @param data    消息数据
     * @param message Toast
     * @param status  消息状态
     */
    protected AjaxMessage(E data, String message, MessageStatus status) {
        this.data = data;
        this.message = message;
        this.status = status;
        this.exception = null;
    }

    /**
     * 构造一个包括异常信息的函数
     *
     * @param data      消息数据
     * @param message   Toast
     * @param status    消息状态
     * @param exception exception信息
     */
    protected AjaxMessage(E data, String message, MessageStatus status, Exception exception) {
        this.data = data;
        this.message = message;
        this.status = status;
        this.exception = exception;
    }

    public static AjaxMessage ok() {
        return OK;
    }

    /**
     * 返回处理正常的消息内容
     *
     * @param message Toast
     * @param data    消息数据
     * @param <E>     数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage ok(String message, E data) {
        return new AjaxMessage<E>(data, message, MessageStatus.OK);
    }

    /**
     * 返回处理正常的消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage ok(E data) {
        return ok(StringUtils.EMPTY, data);
    }

    /**
     * 返回处理正常的消息内容
     *
     * @param message Toast
     * @return message content
     */
    public static AjaxMessage ok(String message) {
        return ok(message, null);
    }

    /**
     * 正在开发提示语
     *
     * @return 正在开发提示
     */
    public static AjaxMessage developing() {

        return ok("Online Developeing...", null);
    }

    public static AjaxMessage nodata() {
        return NODATA;
    }

    /**
     * 返回没有数据的消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage nodata(E data) {
        return new AjaxMessage<E>(data, EMPTY, MessageStatus.NODATA);
    }

    /**
     * 返回没有数据的消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage nodata(String message, E data) {
        return new AjaxMessage<E>(data, message, MessageStatus.NODATA);
    }

    /**
     * 返回没有登录时消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage nologin(E data) {
        return new AjaxMessage<E>(data, EMPTY, MessageStatus.NOLOGIN);
    }

    /**
     * 返回没有登录时的消息内容
     *
     * @return message content
     */
    public static AjaxMessage nologin() {
        return nologin(null);
    }

    public static AjaxMessage forbidden() {
        return FORBIDDEN;
    }

    /**
     * 返回禁止访问消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage forbidden(E data) {
        return new AjaxMessage<E>(data, EMPTY, MessageStatus.FORBIDDEN);
    }

    /**
     * 返回禁止访问消息内容
     *
     * @param data 消息数据
     * @param <E>  数据泛型类型
     * @return message content
     */
    public static <E> AjaxMessage forbidden(String message, E data) {
        return new AjaxMessage<E>(data, message, MessageStatus.FORBIDDEN);
    }

    public static AjaxMessage error() {
        return ERROR;
    }

    /**
     * 返回处理错误的消息内容
     *
     * @param message Toast
     * @return message content
     */
    public static AjaxMessage error(String message) {
        return error(message, null, null);
    }

    /**
     * 返回处理错误的消息内容
     *
     * @param data Toast
     * @return message content
     */
    public static <E> AjaxMessage error(E data) {
        return error(EMPTY, data, null);
    }

    /**
     * 返回处理错误的消息内容
     *
     * @param message   Toast
     * @param exception exception
     * @return message content
     */
    public static AjaxMessage error(String message, Exception exception) {
        return error(message, null, exception);
    }

    /**
     * 返回处理错误的消息内容
     *
     * @param message   Toast
     * @param exception exception
     * @param data      数据
     * @return message content
     */
    public static <E> AjaxMessage error(String message, E data, Exception exception) {
        return new AjaxMessage<E>(data, message, MessageStatus.ERROR, exception);
    }

    /**
     * 返回处理失败的消息内容
     *
     * @param message Toast
     * @return message content
     */
    public static AjaxMessage failure(String message) {
        return failure(message, null, null);
    }

    /**
     * 返回处理失败的消息内容
     *
     * @param data data
     * @return message content
     */
    public static <E> AjaxMessage failure(E data) {
        return failure(null, data, null);
    }

    /**
     * 返回处理失败的消息内容
     *
     * @param message   Toast
     * @param exception exception
     * @return message content
     */
    public static AjaxMessage failure(String message, Exception exception) {
        return failure(message, null, exception);
    }

    /**
     * 返回处理失败的消息内容
     *
     * @param message   Toast
     * @param exception exception
     * @param data      数据
     * @return message content
     */
    public static <E> AjaxMessage failure(String message, E data, Exception exception) {
        return new AjaxMessage<E>(data, message, MessageStatus.FAILURE, exception);
    }

    public AjaxMessage<E> code(String code) {
        this.code = code;
        return this;
    }

    /**
     * 获取消息数据
     *
     * @return 消息数据
     */
    public E getData() {
        return data;
    }

    /**
     * 获取消息提
     *
     * @return 消息提醒
     */
    public String getMessage() {
        return message;
    }

    /**
     * 获取状态
     *
     * @return 状态信息
     */
    public MessageStatus getStatus() {
        return status;
    }

    /**
     * 转换为JSON字符串。
     *
     * @return JSON字符串
     */
    public String toJSON() {
        return JSON.toJSONString(this);
    }

    /**
     * 获取错误异常.
     *
     * @return exception信息.
     */
    public Exception getException() {
        return exception;
    }

    public String getCode() {
        return code;
    }

    /**
     * Request message processing state
     */
    protected enum MessageStatus {
        /**
         * Normal
         */
        OK,
        /**
         * internal error occurred
         */
        ERROR,
        /**
         * To deal with failure
         */
        FAILURE,
        /**
         * No data
         */
        NODATA,
        /**
         * Forbidden
         */
        FORBIDDEN,
        /**
         * Not logged in
         */
        NOLOGIN

    }
}


/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2013-2014 sagyf Yang. The Four Group.
 */

package goja.core.kits.lang;

import goja.core.StringPool;
import goja.core.encry.EncodeKit;

import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;

import sun.misc.BASE64Encoder;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

/**
 * <p> 产品序列号,生成方法，默认的，具体的可根据业务自己实现. </p>
 *
 * @author sagyf yang
 * @version 1.0 2014-02-07 12:18
 * @since JDK 1.6
 */
public class KeyCodeKit {

    /**
     * 产品序列号前10位+KEY前5位+5位随机数字和字符（大小写）+时间戳 MD5 加密
     *
     * @param productSerialNo 产品序列号
     * @param codeKey         产品代码
     * @return 授权码
     */
    public static String generateKeyCode(String productSerialNo, String codeKey) {
        return digestPassword(StringUtils.leftPad(productSerialNo, 10, StringPool.ZERO)
                + StringUtils.leftPad(codeKey, 5, StringPool.ZERO)
                + RandomStringUtils.randomAlphanumeric(5)
                + DateTime.now().getMillis());
    }

    /**
     * 加密
     *
     * @param password 需要加密的字符串
     */
    private static String digestPassword(String password) {
        try {
            SecureRandom random = new SecureRandom();
            byte[] salt = new byte[EncodeKit.SALT_SIZE];
            random.nextBytes(salt);

            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(salt);
            md.update(password.getBytes());
            byte[] digest = md.digest();

            BASE64Encoder encoder = new BASE64Encoder();
            return encoder.encode(salt) + encoder.encode(digest);
        } catch (NoSuchAlgorithmException ne) {
            System.err.println(ne.toString());
            return null;
        } catch (Exception e) {
            System.err.println(e.toString());
            return null;
        }
    }
}