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/*
* Licensed to the Nervousync Studio (NSYC) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.nervousync.utils;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.Character.UnicodeBlock;
import java.lang.reflect.Field;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.Random;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.nervousync.commons.beans.xml.BaseElement;
import com.nervousync.commons.core.Globals;
import com.nervousync.commons.core.zip.ZipConstants;
import com.nervousync.enumerations.xml.DataType;
import com.nervousync.exceptions.zip.ZipException;
import com.nervousync.huffman.HuffmanNode;
import com.nervousync.huffman.HuffmanObject;
import com.nervousync.huffman.HuffmanTree;
import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;
/**
* @author Steven Wee [email protected]
* @version $Revision: 1.0 $ $Date: Jan 13, 2010 3:53:41 PM $
*/
public final class StringUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(StringUtils.class);
private static final String FOLDER_SEPARATOR = "/";
private static final String WINDOWS_FOLDER_SEPARATOR = "\\";
private static final String TOP_PATH = "..";
private static final String CURRENT_PATH = ".";
private static final char EXTENSION_SEPARATOR = '.';
private static final String BASE64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
private static final String AUTHCODEITEMS = "23456789ABCEFGHJKLMNPQRSTUVWXYZ";
private static final String CHN_IDEN_REGEX = "^[1-9]([0-9]{17}|([0-9]{16}X))$";
private static final String CHN_IDEN_AUTHCODE = "10X98765432";
private static final int[] CHN_IDEN_WEIGHT = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
private static final String CHN_ORG_CODE_REGEX = "^[1-9A-Z]([0-9A-Z]{7})-{0,1}([0-9]|X)$";
private static final String CHN_ORG_CODE_MAP = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
private static final int[] CHN_ORG_CODE_WEIGHT = {3, 7, 9, 10, 5, 8, 4, 2};
private static final String CHN_SOCIAL_CREDIT_REGEX = "^[1|5|9|Y][0-9A-Z]{17}$";
private static final String CHN_SOCIAL_CREDIT_AUTHCODE = "0123456789ABCDEFGHJKLMNPQRTUWXY";
private static final int[] CHN_SOCIAL_CREDIT_WEIGHT = {1, 3, 9, 27, 19, 26, 16, 17, 20, 29, 25, 13, 8, 24, 10, 30, 28};
private StringUtils() {
}
public static boolean supportedCharset(String charset) {
try {
new String("a".getBytes(), charset);
return true;
} catch (UnsupportedEncodingException e) {
return Globals.DEFAULT_VALUE_BOOLEAN;
}
}
public static byte[] convertCharset(String str) throws ZipException {
try {
byte[] converted = null;
String charSet = detectCharSet(str);
if (charSet.equals(ZipConstants.CHARSET_CP850)) {
converted = str.getBytes(ZipConstants.CHARSET_CP850);
} else if (charSet.equals(Globals.DEFAULT_ENCODING)) {
converted = str.getBytes(Globals.DEFAULT_ENCODING);
} else {
converted = str.getBytes();
}
return converted;
} catch (UnsupportedEncodingException err) {
return str.getBytes();
} catch (Exception e) {
throw new ZipException(e);
}
}
public static boolean isNotNullAndNotEmpty(String str) {
if (str == null || str.trim().length() <= 0) {
return false;
}
return true;
}
public static String base64Encode(byte[] bytes) {
int length = bytes.length;
byte[] tempBytes = null;
if (length % 3 == 0) {
tempBytes = bytes;
} else {
while (length % 3 != 0) {
length++;
}
tempBytes = new byte[length];
System.arraycopy(bytes, 0, tempBytes, 0, bytes.length);
for (int i = bytes.length ; i < length ; i++) {
tempBytes[i] = 0;
}
}
char[] charArray = new char[((length + 2) / 3) * 4];
int index = 0;
while ((index * 3) < length) {
charArray[index * 4] = BASE64.charAt((tempBytes[index * 3] >> 2) & 0x3F);
charArray[index * 4 + 1] = BASE64.charAt(((tempBytes[index * 3] << 4) | ((tempBytes[index * 3 + 1] & 0xFF) >> 4)) & 0x3F);
if (index * 3 + 1 >= bytes.length) {
charArray[index * 4 + 2] = '=';
} else {
charArray[index * 4 + 2] = BASE64.charAt(((tempBytes[index * 3 + 1] << 2) | ((tempBytes[index * 3 + 2] & 0xFF) >> 6)) & 0x3F);
}
if (index * 3 + 2 >= bytes.length) {
charArray[index * 4 + 3] = '=';
} else {
charArray[index * 4 + 3] = BASE64.charAt(tempBytes[index * 3 + 2] & 0x3F);
}
index++;
}
return new String(charArray);
}
public static byte[] base64Decode(String string) {
while (string.endsWith("=")) {
string = string.substring(0, string.length() - 1);
}
byte[] bytes = new byte[string.length() * 3 / 4];
int index = 0;
for (int i = 0 ; i < string.length() ; i += 4) {
bytes[index * 3] = (byte)(((BASE64.indexOf(string.charAt(i)) << 2) | (BASE64.indexOf(string.charAt(i + 1)) >> 4)) & 0xFF);
if (index * 3 + 1 >= bytes.length) {
break;
}
bytes[index * 3 + 1] = (byte)(((BASE64.indexOf(string.charAt(i + 1)) << 4) | (BASE64.indexOf(string.charAt(i + 2)) >> 2)) & 0xFF);
if (index * 3 + 2 >= bytes.length) {
break;
}
bytes[index * 3 + 2] = (byte)(((BASE64.indexOf(string.charAt(i + 2)) << 6) | BASE64.indexOf(string.charAt(i + 3))) & 0xFF);
index++;
}
return bytes;
}
/**
* returns the length of the string by wrapping it in a byte buffer with
* the appropriate charset of the input string and returns the limit of the
* byte buffer
* @param str
* @return length of the string
* @throws ZipException
*/
public static int getEncodedStringLength(String str) throws ZipException {
if (!isNotNullAndNotEmpty(str)) {
throw new ZipException("input string is null, cannot calculate encoded String length");
}
String charset = detectCharSet(str);
return getEncodedStringLength(str, charset);
}
/**
* returns the length of the string in the input encoding
* @param str
* @param charset
* @return int
* @throws ZipException
*/
public static int getEncodedStringLength(String str, String charset) throws ZipException {
if (!isNotNullAndNotEmpty(str)) {
throw new ZipException("input string is null, cannot calculate encoded String length");
}
if (!isNotNullAndNotEmpty(charset)) {
throw new ZipException("encoding is not defined, cannot calculate string length");
}
ByteBuffer byteBuffer = null;
try {
if (charset.equals(ZipConstants.CHARSET_CP850)) {
byteBuffer = ByteBuffer.wrap(str.getBytes(ZipConstants.CHARSET_CP850));
} else if (charset.equals(Globals.DEFAULT_ENCODING)) {
byteBuffer = ByteBuffer.wrap(str.getBytes(Globals.DEFAULT_ENCODING));
} else {
byteBuffer = ByteBuffer.wrap(str.getBytes(charset));
}
} catch (UnsupportedEncodingException e) {
byteBuffer = ByteBuffer.wrap(str.getBytes());
} catch (Exception e) {
throw new ZipException(e);
}
return byteBuffer.limit();
}
/**
* Detects the encoding charset for the input string
*
* @param str
* @return String - charset for the String
* @throws ZipException
* - if input string is null. In case of any other exception
* this method returns default System charset
*/
public static String detectCharSet(String str) throws ZipException {
if (str == null) {
throw new ZipException("input string is null, cannot detect charset");
}
try {
byte[] byteString = str.getBytes(ZipConstants.CHARSET_CP850);
String tempString = new String(byteString, ZipConstants.CHARSET_CP850);
if (str.equals(tempString)) {
return ZipConstants.CHARSET_CP850;
}
byteString = str.getBytes(Globals.DEFAULT_ENCODING);
tempString = new String(byteString, Globals.DEFAULT_ENCODING);
if (str.equals(tempString)) {
return Globals.DEFAULT_ENCODING;
}
return Globals.DEFAULT_SYSTEM_CHARSET;
} catch (UnsupportedEncodingException e) {
return Globals.DEFAULT_SYSTEM_CHARSET;
} catch (Exception e) {
return Globals.DEFAULT_SYSTEM_CHARSET;
}
}
public static String encodeWithHuffman(Hashtable codeMapping, String content) {
return HuffmanTree.encodeString(codeMapping, content);
}
public static HuffmanObject encodeWithHuffman(String content) {
HuffmanTree huffmanTree = new HuffmanTree();
String temp = content;
List checkedStrings = new ArrayList();
while (temp.length() > 0) {
String keyword = temp.substring(0, 1);
if (!checkedStrings.contains(keyword)) {
huffmanTree.insertNode(new HuffmanNode(keyword,
StringUtils.countOccurrencesOf(content, keyword)));
checkedStrings.add(keyword);
}
temp = temp.substring(1);
}
huffmanTree.build();
return huffmanTree.encodeString(content);
}
//---------------------------------------------------------------------
// General convenience methods for working with Strings
//---------------------------------------------------------------------
/**
* Check that the given CharSequence is neither null
nor of length 0.
* Note: Will return 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 null
)
* @return 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 null
nor of length 0.
* Note: Will return true
for a String that purely consists of whitespace.
* @param str the String to check (may be null
)
* @return 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 true
if the string not 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 null
)
* @return true
if the CharSequence is not null
,
* its length is greater than 0, and it does not contain whitespace only
* @see java.lang.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 true
if the string not null
,
* its length is greater than 0, and it contains at least one non-whitespace character.
* @param str the String to check (may be null
)
* @return true
if the String is not 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 null
)
* @return true
if the CharSequence is not empty and
* contains at least 1 whitespace character
* @see java.lang.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 null
)
* @return 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;
}
StringBuffer buf = new StringBuffer(str);
while (buf.length() > 0 && Character.isWhitespace(buf.charAt(0))) {
buf.deleteCharAt(0);
}
while (buf.length() > 0 && Character.isWhitespace(buf.charAt(buf.length() - 1))) {
buf.deleteCharAt(buf.length() - 1);
}
return buf.toString();
}
/**
* Trim all whitespace from the given String:
* leading, trailing, and inbetween 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;
}
StringBuffer buf = new StringBuffer(str);
int index = 0;
while (buf.length() > index) {
if (Character.isWhitespace(buf.charAt(index))) {
buf.deleteCharAt(index);
}
else {
index++;
}
}
return buf.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;
}
StringBuffer buf = new StringBuffer(str);
while (buf.length() > 0 && Character.isWhitespace(buf.charAt(0))) {
buf.deleteCharAt(0);
}
return buf.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;
}
StringBuffer buf = new StringBuffer(str);
while (buf.length() > 0 && Character.isWhitespace(buf.charAt(buf.length() - 1))) {
buf.deleteCharAt(buf.length() - 1);
}
return buf.toString();
}
/**
* Trim all occurences 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;
}
StringBuffer buf = new StringBuffer(str);
while (buf.length() > 0 && buf.charAt(0) == leadingCharacter) {
buf.deleteCharAt(0);
}
return buf.toString();
}
/**
* Trim all occurences 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;
}
StringBuffer buf = new StringBuffer(str);
while (buf.length() > 0 && buf.charAt(buf.length() - 1) == trailingCharacter) {
buf.deleteCharAt(buf.length() - 1);
}
return buf.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 StringBuffer)
* @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, pos = 0, idx = 0;
while ((idx = str.indexOf(sub, pos)) != -1) {
++count;
pos = idx + sub.length();
}
return count;
}
/**
* Replace all occurences 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 (inString == null) {
return null;
}
if (oldPattern == null || newPattern == null) {
return inString;
}
StringBuffer sbuf = new StringBuffer();
// output StringBuffer we'll build up
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) {
sbuf.append(inString.substring(pos, index));
sbuf.append(newPattern);
pos = index + patLen;
index = inString.indexOf(oldPattern, pos);
}
sbuf.append(inString.substring(pos));
// remember to append any characters to the right of a match
return sbuf.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, "");
}
/**
* 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;
}
StringBuffer out = new StringBuffer();
for (int i = 0; i < inString.length(); i++) {
char c = inString.charAt(i);
if (charsToDelete.indexOf(c) == -1) {
out.append(c);
}
}
return out.toString();
}
//---------------------------------------------------------------------
// Convenience methods for working with formatted Strings
//---------------------------------------------------------------------
/**
* Quote the given String with single quotes.
* @param str the input String (e.g. "myString")
* @return the quoted String (e.g. "'myString'"),
* or null if the input was 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 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 null
* @return the capitalized String, null
if null
*/
public static String capitalize(String str) {
return changeFirstCharacterCase(str, true);
}
/**
* Uncapitalize a 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 null
* @return the uncapitalized String, null
if null
*/
public static String uncapitalize(String str) {
return changeFirstCharacterCase(str, false);
}
/**
* Extract the filename from the given path,
* e.g. "mypath/myfile.txt" -> "myfile.txt".
* @param path the file path (may be null
)
* @return the extracted filename, or null
if none
*/
public static String getFilename(String path) {
if (path == null) {
return null;
}
path = cleanPath(path);
int separatorIndex = path.lastIndexOf(FOLDER_SEPARATOR);
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 null
)
* @return the extracted filename extension, or null
if none
*/
public static String getFilenameExtension(String path) {
if (path == null) {
return null;
}
int sepIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
return (sepIndex != -1 ? path.substring(sepIndex + 1) : null);
}
/**
* Strip the filename extension from the given path,
* e.g. "mypath/myfile.txt" -> "mypath/myfile".
* @param path the file path (may be null
)
* @return the path with stripped filename extension,
* or null
if none
*/
public static String stripFilenameExtension(String path) {
if (path == null) {
return null;
}
int sepIndex = path.lastIndexOf(EXTENSION_SEPARATOR);
return (sepIndex != -1 ? path.substring(0, sepIndex) : path);
}
/**
* 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(FOLDER_SEPARATOR);
if (separatorIndex != -1) {
String newPath = path.substring(0, separatorIndex);
if (!relativePath.startsWith(FOLDER_SEPARATOR)) {
newPath += FOLDER_SEPARATOR;
}
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) {
String pathToUse = replace(path, WINDOWS_FOLDER_SEPARATOR, FOLDER_SEPARATOR);
// 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);
pathToUse = pathToUse.substring(prefixIndex + 1);
}
String[] pathArray = delimitedListToStringArray(pathToUse, FOLDER_SEPARATOR);
List pathElements = new LinkedList();
int tops = 0;
for (int i = pathArray.length - 1; i >= 0; i--) {
if (CURRENT_PATH.equals(pathArray[i])) {
// Points to current directory - drop it.
}
else if (TOP_PATH.equals(pathArray[i])) {
// Registering top path found.
tops++;
}
else {
if (tops > 0) {
// Merging path element with corresponding to top path.
tops--;
}
else {
// Normal path element found.
pathElements.add(0, pathArray[i]);
}
}
}
// Remaining top paths need to be retained.
for (int i = 0; i < tops; i++) {
pathElements.add(0, TOP_PATH);
}
return prefix + collectionToDelimitedString(pathElements, FOLDER_SEPARATOR);
}
/**
* 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 localeString
into a {@link Locale}.
* This is the inverse operation of {@link Locale#toString Locale's toString}.
* @param localeString the locale string, following Locale's
* toString()
format ("en", "en_UK", etc);
* also accepts spaces as separators, as an alternative to underscores
* @return a corresponding Locale
instance
*/
public static Locale parseLocaleString(String localeString) {
if (localeString == null) {
return null;
}
String[] parts = tokenizeToStringArray(localeString, "_", false, false);
if (parts == null) {
return null;
}
String language = (parts.length > 0 ? parts[0] : "");
String country = (parts.length > 1 ? parts[1] : "");
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) + 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);
}
//---------------------------------------------------------------------
// Convenience methods for working with String arrays
//---------------------------------------------------------------------
/**
* 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 null
)
* @param str the String to append
* @return the new array (never null
)
*/
public static String[] addStringToArray(String[] array, String str) {
if (ObjectUtils.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 null
)
* @param array2 the second array (can be null
)
* @return the new array (null
if both given arrays were null
)
*/
public static String[] concatenateStringArrays(String[] array1, String[] array2) {
if (ObjectUtils.isEmpty(array1)) {
return array2;
}
if (ObjectUtils.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 occurence).
* @param array1 the first array (can be null
)
* @param array2 the second array (can be null
)
* @return the new array (null
if both given arrays were null
)
*/
public static String[] mergeStringArrays(String[] array1, String[] array2) {
if (ObjectUtils.isEmpty(array1)) {
return array2;
}
if (ObjectUtils.isEmpty(array2)) {
return array1;
}
List result = new ArrayList();
result.addAll(Arrays.asList(array1));
for (int i = 0; i < array2.length; i++) {
String str = array2[i];
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 null
)
*/
public static String[] sortStringArray(String[] array) {
if (ObjectUtils.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 (null
if the passed-in
* Collection was null
)
*/
public static String[] toStringArray(Collection collection) {
if (collection == null) {
return null;
}
return (String[]) 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 (null
if the passed-in
* Enumeration was null
)
*/
public static String[] toStringArray(Enumeration enumeration) {
if (enumeration == null) {
return null;
}
List list = Collections.list(enumeration);
return (String[]) list.toArray(new String[list.size()]);
}
/**
* Trim the elements of the given String array,
* calling 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 (ObjectUtils.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 (ObjectUtils.isEmpty(array)) {
return array;
}
Set set = new TreeSet();
for (int i = 0; i < array.length; i++) {
set.add(array[i]);
}
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 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 new String[]{toSplit};
}
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 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
* Properties
instance.
* @param array the array to process
* @param delimiter to split each element using (typically the equals symbol)
* @return a Properties
instance representing the array contents,
* or 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 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
* 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 null
if no removal should occur
* @return a Properties
instance representing the array contents,
* or null
if the array to process was null
or empty
*/
public static Properties splitArrayElementsIntoProperties(
String[] array, String delimiter, String charsToDelete) {
if (ObjectUtils.isEmpty(array)) {
return null;
}
Properties result = new Properties();
for (int i = 0; i < array.length; i++) {
String element = array[i];
if (charsToDelete != null) {
element = deleteAny(array[i], 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 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 java.lang.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 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 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 (null
if the input String
* was null
)
* @see java.util.StringTokenizer
* @see java.lang.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 tokens = new ArrayList();
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 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 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 result = new ArrayList();
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 = 0;
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 commaDelimitedListToSet(String str) {
Set set = new TreeSet();
String[] tokens = commaDelimitedListToStringArray(str);
for (int i = 0; i < tokens.length; i++) {
set.add(tokens[i]);
}
return set;
}
/**
* Convenience method to return a Collection as a delimited (e.g. CSV)
* String. E.g. useful for 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 (CollectionUtils.isEmpty(coll)) {
return "";
}
StringBuffer sb = new StringBuffer();
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 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 toString()
implementations.
* @param coll the Collection to display
* @return the delimited String
*/
public static String collectionToCommaDelimitedString(Collection coll) {
return collectionToDelimitedString(coll, ",");
}
public static boolean containsIgnoreCase(String string, String search) {
if (string == null || search == null) {
return false;
}
int length = search.length();
int maxLength = string.length() - length;
for (int i = 0 ; i < maxLength ; i++) {
if (string.regionMatches(true, i, search, 0, length)) {
return true;
}
}
return false;
}
/**
* Convenience method to return a String array as a delimited (e.g. CSV)
* String. E.g. useful for 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 (ObjectUtils.isEmpty(arr)) {
return "";
}
StringBuffer sb = new StringBuffer();
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 toString()
implementations.
* @param arr the array to display
* @return the delimited String
*/
public static String arrayToCommaDelimitedString(Object[] arr) {
return arrayToDelimitedString(arr, ",");
}
/**
* 转换数据库中BLOB类型的数据,并过滤HTML非法代码
* @param content BLOB类型数据
* @return
* @throws Exception
*/
public static String convertContent(byte [] content) throws Exception {
if (content == null) {
return null;
}
return TextToHtml(ConvertUtils.convertToString(content));
}
public static String convertObjectToJSONString(Object object) {
TreeMap valueMap = new TreeMap();
if (object instanceof Map || object.getClass().isArray()
|| Collection.class.isAssignableFrom(object.getClass())) {
ObjectMapper objectMapper = new ObjectMapper();
try {
return objectMapper.writeValueAsString(object);
} catch (JsonProcessingException e) {
if (StringUtils.LOGGER.isDebugEnabled()) {
StringUtils.LOGGER.debug("Convert object to string error! ", e);
}
}
} else {
Field[] fields = object.getClass().getDeclaredFields();
for (Field field : fields) {
if (ReflectionUtils.isStatic(field)) {
continue;
}
Object fieldValue = ReflectionUtils.getFieldValue(field, object);
Object mapValue = null;
if (fieldValue instanceof byte[]) {
mapValue = StringUtils.base64Encode((byte[])fieldValue);
} else {
mapValue = fieldValue;
}
valueMap.put(field.getName(), mapValue);
}
ObjectMapper objectMapper = new ObjectMapper();
try {
return objectMapper.writeValueAsString(valueMap);
} catch (JsonProcessingException e) {
if (StringUtils.LOGGER.isDebugEnabled()) {
StringUtils.LOGGER.debug("Convert object to string error! ", e);
}
}
}
return null;
}
public static T convertJSONStringToObject(String jsonData, Class clazz) {
return ConvertUtils.convertMapToObject(StringUtils.convertJSONStringToMap(jsonData), clazz);
}
public static List convertJSONStringToList(String jsonData, Class clazz) {
ObjectMapper objectMapper = new ObjectMapper();
try {
JavaType javaType = objectMapper.getTypeFactory().constructParametricType(ArrayList.class, String.class);
List dataList = objectMapper.readValue(jsonData, javaType);
List returnList = new ArrayList();
for (String itemData : dataList) {
returnList.add(StringUtils.convertJSONStringToObject(itemData, clazz));
}
return returnList;
} catch (Exception e) {
if (StringUtils.LOGGER.isDebugEnabled()) {
StringUtils.LOGGER.debug("Convert json string to object bean error! ", e);
}
}
return null;
}
public static Map convertJSONStringToMap(String jsonData) {
ObjectMapper objectMapper = new ObjectMapper();
try {
return objectMapper.readValue(jsonData, new TypeReference