Class CharChunk

  • All Implemented Interfaces:
    Serializable, CharSequence, Cloneable

    public final class CharChunk
    extends AbstractChunk
    implements CharSequence
    Utilities to manipulate char chunks. While String is the easiest way to manipulate chars ( search, substrings, etc), it is known to not be the most efficient solution - Strings are designed as immutable and secure objects.
    Author:
    dac@sun.com, James Todd [gonzo@sun.com], Costin Manolache, Remy Maucherat
    See Also:
    Serialized Form
    • Constructor Detail

      • CharChunk

        public CharChunk()
        Creates a new, uninitialized CharChunk object.
      • CharChunk

        public CharChunk​(int initial)
    • Method Detail

      • allocate

        public void allocate​(int initial,
                             int limit)
      • setChars

        public void setChars​(char[] c,
                             int off,
                             int len)
        Sets the buffer to the specified subarray of characters.
        Parameters:
        c - the characters
        off - the start offset of the characters
        len - the length of the characters
      • getChars

        public char[] getChars()
        Returns:
        the buffer.
      • getBuffer

        public char[] getBuffer()
        Returns:
        the buffer.
      • setCharInputChannel

        public void setCharInputChannel​(CharChunk.CharInputChannel in)
        When the buffer is empty, read the data from the input channel.
        Parameters:
        in - The input channel
      • setCharOutputChannel

        public void setCharOutputChannel​(CharChunk.CharOutputChannel out)
        When the buffer is full, write the data to the output channel. Also used when large amount of data is appended. If not set, the buffer will grow to the limit.
        Parameters:
        out - The output channel
      • append

        public void append​(char[] src,
                           int off,
                           int len)
                    throws IOException
        Add data to the buffer.
        Parameters:
        src - Char array
        off - Offset
        len - Length
        Throws:
        IOException - Writing overflow data to the output channel failed
      • append

        public void append​(String s)
                    throws IOException
        Append a string to the buffer.
        Parameters:
        s - The string
        Throws:
        IOException - Writing overflow data to the output channel failed
      • append

        public void append​(String s,
                           int off,
                           int len)
                    throws IOException
        Append a string to the buffer.
        Parameters:
        s - The string
        off - Offset
        len - Length
        Throws:
        IOException - Writing overflow data to the output channel failed
      • substract

        public int substract​(char[] dest,
                             int off,
                             int len)
                      throws IOException
        Throws:
        IOException
      • flushBuffer

        public void flushBuffer()
                         throws IOException
        Send the buffer to the sink. Called by append() when the limit is reached. You can also call it explicitly to force the data to be written.
        Throws:
        IOException - Writing overflow data to the output channel failed
      • makeSpace

        public void makeSpace​(int count)
        Make space for len chars. If len is small, allocate a reserve space too. Never grow bigger than the limit or AbstractChunk.ARRAY_MAX_SIZE.
        Parameters:
        count - The size
      • toStringInternal

        public String toStringInternal()
      • equals

        public boolean equals​(String s)
        Compares the message bytes to the specified String object.
        Parameters:
        s - the String to compare
        Returns:
        true if the comparison succeeded, false otherwise
      • equalsIgnoreCase

        public boolean equalsIgnoreCase​(String s)
        Compares the message bytes to the specified String object.
        Parameters:
        s - the String to compare
        Returns:
        true if the comparison succeeded, false otherwise
      • equals

        public boolean equals​(CharChunk cc)
      • equals

        public boolean equals​(char[] b2,
                              int off2,
                              int len2)
      • startsWith

        public boolean startsWith​(String s)
        Parameters:
        s - The string
        Returns:
        true if the message bytes starts with the specified string.
      • startsWithIgnoreCase

        public boolean startsWithIgnoreCase​(String s,
                                            int pos)
        Returns true if the buffer starts with the specified string.
        Parameters:
        s - the string
        pos - The position
        Returns:
        true if the start matches
      • endsWith

        public boolean endsWith​(String s)
        Parameters:
        s - The string
        Returns:
        true if the message bytes end with the specified string.
      • indexOf

        public int indexOf​(char c)
      • indexOf

        public int indexOf​(char c,
                           int starting)
        Returns the first instance of the given character in this CharChunk starting at the specified char. If the character is not found, -1 is returned.
        Parameters:
        c - The character
        starting - The start position
        Returns:
        The position of the first instance of the character or -1 if the character is not found.
      • indexOf

        public static int indexOf​(char[] chars,
                                  int start,
                                  int end,
                                  char s)
        Returns the first instance of the given character in the given char array between the specified start and end.
        Parameters:
        chars - The array to search
        start - The point to start searching from in the array
        end - The point to stop searching in the array
        s - The character to search for
        Returns:
        The position of the first instance of the character or -1 if the character is not found.
      • charAt

        public char charAt​(int index)
        Specified by:
        charAt in interface CharSequence
      • setOptimizedWrite

        @Deprecated
        public void setOptimizedWrite​(boolean optimizedWrite)
        Deprecated.
        Unused code. This is now a NO-OP and will be removed without replacement in Tomcat 10.
        NO-OP.
        Parameters:
        optimizedWrite - Ignored