Issue 5148 - Remove Apache String Utils code

libadblockplus-android/src/org/apache/commons/lang/CharUtils.java

Index: libadblockplus-android/src/org/apache/commons/lang/CharUtils.java
diff --git a/libadblockplus-android/src/org/apache/commons/lang/CharUtils.java b/libadblockplus-android/src/org/apache/commons/lang/CharUtils.java
deleted file mode 100644
index 18c562e70f7ddc455d1724a47dca366baeb4a411..0000000000000000000000000000000000000000
--- a/libadblockplus-android/src/org/apache/commons/lang/CharUtils.java
+++ /dev/null
@@ -1,611 +0,0 @@
-/*
- * Simplified by Andrey Novikov for AdBlock Plus
- */
-
-/*
- * Licensed to the Apache Software Foundation (ASF) 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 org.apache.commons.lang;
-
-/**
- * <p>Operations on char primitives and Character objects.</p>
- *
- * <p>This class tries to handle <code>null</code> input gracefully.
- * An exception will not be thrown for a <code>null</code> input.
- * Each method documents its behaviour in more detail.</p>
- *
- * @author Stephen Colebourne
- * @since 2.1
- * @version $Id: CharUtils.java 437554 2006-08-28 06:21:41Z bayard $
- */
-public class CharUtils
-{
-  private static final String CHAR_STRING =
-    "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007" +
-    "\b\t\n\u000b\f\r\u000e\u000f" +
-    "\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017" +
-    "\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f" +
-    "\u0020\u0021\"\u0023\u0024\u0025\u0026\u0027" +
-    "\u0028\u0029\u002a\u002b\u002c\u002d\u002e\u002f" +
-    "\u0030\u0031\u0032\u0033\u0034\u0035\u0036\u0037" +
-    "\u0038\u0039\u003a\u003b\u003c\u003d\u003e\u003f" +
-    "\u0040\u0041\u0042\u0043\u0044\u0045\u0046\u0047" +
-    "\u0048\u0049\u004a\u004b\u004c\u004d\u004e\u004f" +
-    "\u0050\u0051\u0052\u0053\u0054\u0055\u0056\u0057" +
-    "\u0058\u0059\u005a\u005b\\\u005d\u005e\u005f" +
-    "\u0060\u0061\u0062\u0063\u0064\u0065\u0066\u0067" +
-    "\u0068\u0069\u006a\u006b\u006c\u006d\u006e\u006f" +
-    "\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077" +
-    "\u0078\u0079\u007a\u007b\u007c\u007d\u007e\u007f";
-
-  private static final String[] CHAR_STRING_ARRAY = new String[128];
-  private static final Character[] CHAR_ARRAY = new Character[128];
-
-  /**
-   * <code>\u000a</code> linefeed LF ('\n').
-   *
-   * @see <a href="http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#101089">JLF: Escape Sequences
-   *      for Character and String Literals</a>
-   * @since 2.2
-   */
-  public static final char LF = '\n';
-
-  /**
-   * <code>\u000d</code> carriage return CR ('\r').
-   *
-   * @see <a href="http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#101089">JLF: Escape Sequences
-   *      for Character and String Literals</a>
-   * @since 2.2
-   */
-  public static final char CR = '\r';
-
-  static
-  {
-    for (int i = 127; i >= 0; i--)
-    {
-      CHAR_STRING_ARRAY[i] = CHAR_STRING.substring(i, i + 1);
-      CHAR_ARRAY[i] = new Character((char) i);
-    }
-  }
-
-  /**
-   * <p><code>CharUtils</code> instances should NOT be constructed in standard programming.
-   * Instead, the class should be used as <code>CharUtils.toString('c');</code>.</p>
-   *
-   * <p>This constructor is public to permit tools that require a JavaBean instance
-   * to operate.</p>
-   */
-  public CharUtils()
-  {
-    super();
-  }
-
-  //-----------------------------------------------------------------------
-
-  /**
-   * <p>Converts the character to a Character.</p>
-   *
-   * <p>For ASCII 7 bit characters, this uses a cache that will return the
-   * same Character object each time.</p>
-   *
-   * <pre>
-   *   CharUtils.toCharacterObject(' ')  = ' '
-   *   CharUtils.toCharacterObject('A')  = 'A'
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return a Character of the specified character
-   */
-  public static Character toCharacterObject(char ch)
-  {
-    if (ch < CHAR_ARRAY.length)
-    {
-      return CHAR_ARRAY[ch];
-    }
-    return new Character(ch);
-  }
-
-  /**
-   * <p>Converts the String to a Character using the first character, returning
-   * null for empty Strings.</p>
-   *
-   * <p>For ASCII 7 bit characters, this uses a cache that will return the
-   * same Character object each time.</p>
-   *
-   * <pre>
-   *   CharUtils.toCharacterObject(null) = null
-   *   CharUtils.toCharacterObject("")   = null
-   *   CharUtils.toCharacterObject("A")  = 'A'
-   *   CharUtils.toCharacterObject("BA") = 'B'
-   * </pre>
-   *
-   * @param str the character to convert
-   * @return the Character value of the first letter of the String
-   */
-  public static Character toCharacterObject(String str)
-  {
-    if (StringUtils.isEmpty(str))
-    {
-      return null;
-    }
-    return toCharacterObject(str.charAt(0));
-  }
-
-  //-----------------------------------------------------------------------
-
-  /**
-   * <p>Converts the Character to a char throwing an exception for <code>null</code>.</p>
-   *
-   * <pre>
-   *   CharUtils.toChar(null) = IllegalArgumentException
-   *   CharUtils.toChar(' ')  = ' '
-   *   CharUtils.toChar('A')  = 'A'
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return the char value of the Character
-   * @throws IllegalArgumentException if the Character is null
-   */
-  public static char toChar(Character ch)
-  {
-    if (ch == null)
-    {
-      throw new IllegalArgumentException("The Character must not be null");
-    }
-    return ch.charValue();
-  }
-
-  /**
-   * <p>Converts the Character to a char handling <code>null</code>.</p>
-   *
-   * <pre>
-   *   CharUtils.toChar(null, 'X') = 'X'
-   *   CharUtils.toChar(' ', 'X')  = ' '
-   *   CharUtils.toChar('A', 'X')  = 'A'
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @param defaultValue the value to use if the  Character is null
-   * @return the char value of the Character or the default if null
-   */
-  public static char toChar(Character ch, char defaultValue)
-  {
-    if (ch == null)
-    {
-      return defaultValue;
-    }
-    return ch.charValue();
-  }
-
-  //-----------------------------------------------------------------------
-
-  /**
-   * <p>Converts the String to a char using the first character, throwing
-   * an exception on empty Strings.</p>
-   *
-   * <pre>
-   *   CharUtils.toChar(null) = IllegalArgumentException
-   *   CharUtils.toChar("")   = IllegalArgumentException
-   *   CharUtils.toChar("A")  = 'A'
-   *   CharUtils.toChar("BA") = 'B'
-   * </pre>
-   *
-   * @param str the character to convert
-   * @return the char value of the first letter of the String
-   * @throws IllegalArgumentException if the String is empty
-   */
-  public static char toChar(String str)
-  {
-    if (StringUtils.isEmpty(str))
-    {
-      throw new IllegalArgumentException("The String must not be empty");
-    }
-    return str.charAt(0);
-  }
-
-  /**
-   * <p>Converts the String to a char using the first character, defaulting
-   * the value on empty Strings.</p>
-   *
-   * <pre>
-   *   CharUtils.toChar(null, 'X') = 'X'
-   *   CharUtils.toChar("", 'X')   = 'X'
-   *   CharUtils.toChar("A", 'X')  = 'A'
-   *   CharUtils.toChar("BA", 'X') = 'B'
-   * </pre>
-   *
-   * @param str the character to convert
-   * @param defaultValue the value to use if the  Character is null
-   * @return the char value of the first letter of the String or the default if null
-   */
-  public static char toChar(String str, char defaultValue)
-  {
-    if (StringUtils.isEmpty(str))
-    {
-      return defaultValue;
-    }
-    return str.charAt(0);
-  }
-
-  //-----------------------------------------------------------------------
-
-  /**
-   * <p>Converts the character to the Integer it represents, throwing an
-   * exception if the character is not numeric.</p>
-   *
-   * <p>This method coverts the char '1' to the int 1 and so on.</p>
-   *
-   * <pre>
-   *   CharUtils.toIntValue('3')  = 3
-   *   CharUtils.toIntValue('A')  = IllegalArgumentException
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return the int value of the character
-   * @throws IllegalArgumentException if the character is not ASCII numeric
-   */
-  public static int toIntValue(char ch)
-  {
-    if (isAsciiNumeric(ch) == false)
-    {
-      throw new IllegalArgumentException("The character " + ch + " is not in the range '0' - '9'");
-    }
-    return ch - 48;
-  }
-
-  /**
-   * <p>Converts the character to the Integer it represents, throwing an
-   * exception if the character is not numeric.</p>
-   *
-   * <p>This method coverts the char '1' to the int 1 and so on.</p>
-   *
-   * <pre>
-   *   CharUtils.toIntValue('3', -1)  = 3
-   *   CharUtils.toIntValue('A', -1)  = -1
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @param defaultValue the default value to use if the character is not numeric
-   * @return the int value of the character
-   */
-  public static int toIntValue(char ch, int defaultValue)
-  {
-    if (isAsciiNumeric(ch) == false)
-    {
-      return defaultValue;
-    }
-    return ch - 48;
-  }
-
-  /**
-   * <p>Converts the character to the Integer it represents, throwing an
-   * exception if the character is not numeric.</p>
-   *
-   * <p>This method coverts the char '1' to the int 1 and so on.</p>
-   *
-   * <pre>
-   *   CharUtils.toIntValue(null) = IllegalArgumentException
-   *   CharUtils.toIntValue('3')  = 3
-   *   CharUtils.toIntValue('A')  = IllegalArgumentException
-   * </pre>
-   *
-   * @param ch the character to convert, not null
-   * @return the int value of the character
-   * @throws IllegalArgumentException if the Character is not ASCII numeric or is null
-   */
-  public static int toIntValue(Character ch)
-  {
-    if (ch == null)
-    {
-      throw new IllegalArgumentException("The character must not be null");
-    }
-    return toIntValue(ch.charValue());
-  }
-
-  /**
-   * <p>Converts the character to the Integer it represents, throwing an
-   * exception if the character is not numeric.</p>
-   *
-   * <p>This method coverts the char '1' to the int 1 and so on.</p>
-   *
-   * <pre>
-   *   CharUtils.toIntValue(null, -1) = -1
-   *   CharUtils.toIntValue('3', -1)  = 3
-   *   CharUtils.toIntValue('A', -1)  = -1
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @param defaultValue the default value to use if the character is not numeric
-   * @return the int value of the character
-   */
-  public static int toIntValue(Character ch, int defaultValue)
-  {
-    if (ch == null)
-    {
-      return defaultValue;
-    }
-    return toIntValue(ch.charValue(), defaultValue);
-  }
-
-  //-----------------------------------------------------------------------
-
-  /**
-   * <p>Converts the character to a String that contains the one character.</p>
-   *
-   * <p>For ASCII 7 bit characters, this uses a cache that will return the
-   * same String object each time.</p>
-   *
-   * <pre>
-   *   CharUtils.toString(' ')  = " "
-   *   CharUtils.toString('A')  = "A"
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return a String containing the one specified character
-   */
-  public static String toString(char ch)
-  {
-    if (ch < 128)
-    {
-      return CHAR_STRING_ARRAY[ch];
-    }
-    return new String(new char[]{ch});
-  }
-
-  /**
-   * <p>Converts the character to a String that contains the one character.</p>
-   *
-   * <p>For ASCII 7 bit characters, this uses a cache that will return the
-   * same String object each time.</p>
-   *
-   * <p>If <code>null</code> is passed in, <code>null</code> will be returned.</p>
-   *
-   * <pre>
-   *   CharUtils.toString(null) = null
-   *   CharUtils.toString(' ')  = " "
-   *   CharUtils.toString('A')  = "A"
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return a String containing the one specified character
-   */
-  public static String toString(Character ch)
-  {
-    if (ch == null)
-    {
-      return null;
-    }
-    return toString(ch.charValue());
-  }
-
-  //--------------------------------------------------------------------------
-
-  /**
-   * <p>Converts the string to the unicode format '\u0020'.</p>
-   *
-   * <p>This format is the Java source code format.</p>
-   *
-   * <pre>
-   *   CharUtils.unicodeEscaped(' ') = "\u0020"
-   *   CharUtils.unicodeEscaped('A') = "\u0041"
-   * </pre>
-   *
-   * @param ch the character to convert
-   * @return the escaped unicode string
-   */
-  public static String unicodeEscaped(char ch)
-  {
-    if (ch < 0x10)
-    {
-      return "\\u000" + Integer.toHexString(ch);
-    } else if (ch < 0x100)
-    {
-      return "\\u00" + Integer.toHexString(ch);
-    } else if (ch < 0x1000)
-    {
-      return "\\u0" + Integer.toHexString(ch);
-    }
-    return "\\u" + Integer.toHexString(ch);
-  }
-
-  /**
-   * <p>Converts the string to the unicode format '\u0020'.</p>
-   *
-   * <p>This format is the Java source code format.</p>
-   *
-   * <p>If <code>null</code> is passed in, <code>null</code> will be returned.</p>
-   *
-   * <pre>
-   *   CharUtils.unicodeEscaped(null) = null
-   *   CharUtils.unicodeEscaped(' ')  = "\u0020"
-   *   CharUtils.unicodeEscaped('A')  = "\u0041"
-   * </pre>
-   *
-   * @param ch the character to convert, may be null
-   * @return the escaped unicode string, null if null input
-   */
-  public static String unicodeEscaped(Character ch)
-  {
-    if (ch == null)
-    {
-      return null;
-    }
-    return unicodeEscaped(ch.charValue());
-  }
-
-  //--------------------------------------------------------------------------
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit.</p>
-   *
-   * <pre>
-   *   CharUtils.isAscii('a')  = true
-   *   CharUtils.isAscii('A')  = true
-   *   CharUtils.isAscii('3')  = true
-   *   CharUtils.isAscii('-')  = true
-   *   CharUtils.isAscii('\n') = true
-   *   CharUtils.isAscii('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if less than 128
-   */
-  public static boolean isAscii(char ch)
-  {
-    return ch < 128;
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit printable.</p>
-   * <p/>
-   * <pre>
-   *   CharUtils.isAsciiPrintable('a')  = true
-   *   CharUtils.isAsciiPrintable('A')  = true
-   *   CharUtils.isAsciiPrintable('3')  = true
-   *   CharUtils.isAsciiPrintable('-')  = true
-   *   CharUtils.isAsciiPrintable('\n') = false
-   *   CharUtils.isAsciiPrintable('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 32 and 126 inclusive
-   */
-  public static boolean isAsciiPrintable(char ch)
-  {
-    return ch >= 32 && ch < 127;
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit control.</p>
-   *
-   * <pre>
-   *   CharUtils.isAsciiControl('a')  = false
-   *   CharUtils.isAsciiControl('A')  = false
-   *   CharUtils.isAsciiControl('3')  = false
-   *   CharUtils.isAsciiControl('-')  = false
-   *   CharUtils.isAsciiControl('\n') = true
-   *   CharUtils.isAsciiControl('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if less than 32 or equals 127
-   */
-  public static boolean isAsciiControl(char ch)
-  {
-    return ch < 32 || ch == 127;
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit alphabetic.</p>
-   * <p/>
-   * <pre>
-   *   CharUtils.isAsciiAlpha('a')  = true
-   *   CharUtils.isAsciiAlpha('A')  = true
-   *   CharUtils.isAsciiAlpha('3')  = false
-   *   CharUtils.isAsciiAlpha('-')  = false
-   *   CharUtils.isAsciiAlpha('\n') = false
-   *   CharUtils.isAsciiAlpha('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 65 and 90 or 97 and 122 inclusive
-   */
-  public static boolean isAsciiAlpha(char ch)
-  {
-    return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit alphabetic upper case.</p>
-   *
-   * <pre>
-   *   CharUtils.isAsciiAlphaUpper('a')  = false
-   *   CharUtils.isAsciiAlphaUpper('A')  = true
-   *   CharUtils.isAsciiAlphaUpper('3')  = false
-   *   CharUtils.isAsciiAlphaUpper('-')  = false
-   *   CharUtils.isAsciiAlphaUpper('\n') = false
-   *   CharUtils.isAsciiAlphaUpper('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 65 and 90 inclusive
-   */
-  public static boolean isAsciiAlphaUpper(char ch)
-  {
-    return ch >= 'A' && ch <= 'Z';
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit alphabetic lower case.</p>
-   * <p/>
-   * <pre>
-   *   CharUtils.isAsciiAlphaLower('a')  = true
-   *   CharUtils.isAsciiAlphaLower('A')  = false
-   *   CharUtils.isAsciiAlphaLower('3')  = false
-   *   CharUtils.isAsciiAlphaLower('-')  = false
-   *   CharUtils.isAsciiAlphaLower('\n') = false
-   *   CharUtils.isAsciiAlphaLower('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 97 and 122 inclusive
-   */
-  public static boolean isAsciiAlphaLower(char ch)
-  {
-    return ch >= 'a' && ch <= 'z';
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit numeric.</p>
-   *
-   * <pre>
-   *   CharUtils.isAsciiNumeric('a')  = false
-   *   CharUtils.isAsciiNumeric('A')  = false
-   *   CharUtils.isAsciiNumeric('3')  = true
-   *   CharUtils.isAsciiNumeric('-')  = false
-   *   CharUtils.isAsciiNumeric('\n') = false
-   *   CharUtils.isAsciiNumeric('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 48 and 57 inclusive
-   */
-  public static boolean isAsciiNumeric(char ch)
-  {
-    return ch >= '0' && ch <= '9';
-  }
-
-  /**
-   * <p>Checks whether the character is ASCII 7 bit numeric.</p>
-   *
-   * <pre>
-   *   CharUtils.isAsciiAlphanumeric('a')  = true
-   *   CharUtils.isAsciiAlphanumeric('A')  = true
-   *   CharUtils.isAsciiAlphanumeric('3')  = true
-   *   CharUtils.isAsciiAlphanumeric('-')  = false
-   *   CharUtils.isAsciiAlphanumeric('\n') = false
-   *   CharUtils.isAsciiAlphanumeric('&copy;') = false
-   * </pre>
-   *
-   * @param ch the character to check
-   * @return true if between 48 and 57 or 65 and 90 or 97 and 122 inclusive
-   */
-  public static boolean isAsciiAlphanumeric(char ch)
-  {
-    return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9');
-  }
-
-}