Package org.openpdf.text.pdf

Class ByteBuffer

java.lang.Object
java.io.OutputStream
org.openpdf.text.pdf.ByteBuffer
All Implemented Interfaces:
Closeable, Flushable, AutoCloseable
public class ByteBuffer extends OutputStream
Acts like a StringBuffer but works with byte arrays. Floating point is converted to a format suitable to the PDF.

  • Field Details

    • ZERO

      public static final byte ZERO
      See Also:

    • HIGH_PRECISION

      public static boolean HIGH_PRECISION
      If true always output floating point numbers with 6 decimal digits. If false uses the faster, although less precise, representation.

    • count

      protected int count
      The count of bytes in the buffer.

    • buf

      protected byte[] buf
      The buffer where the bytes are stored.

  • Constructor Details

    • ByteBuffer

      public ByteBuffer()
      Creates new ByteBuffer with capacity 128

    • ByteBuffer

      public ByteBuffer(int size)
      Creates a byte buffer with a certain capacity.
      Parameters:
      size - the initial capacity

  • Method Details

    • formatDouble

      public static String formatDouble(double d)
      Outputs a double into a format suitable for the PDF.
      Parameters:
      d - a double
      Returns:
      the String representation of the double

    • formatDouble

      public static String formatDouble(double d, ByteBuffer buf)
      Outputs a double into a format suitable for the PDF.
      Parameters:
      d - a double
      buf - a ByteBuffer
      Returns:
      the String representation of the double if buf is null. If buf is not null, then the double is appended directly to the buffer and this methods returns null.

    • append_i

      public ByteBuffer append_i(int b)
      Appends an int. The size of the array will grow by one.
      Parameters:
      b - the int to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(byte[] b, int off, int len)
      Appends the subarray of the byte array. The buffer will grow by len bytes.
      Parameters:
      b - the array to be appended
      off - the offset to the start of the array
      len - the length of bytes to append
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(byte[] b)
      Appends an array of bytes.
      Parameters:
      b - the array to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(String str)
      Appends a String to the buffer. The String is converted according to the encoding ISO-8859-1.
      Parameters:
      str - the String to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(char c)
      Appends a char to the buffer. The char is converted according to the encoding ISO-8859-1.
      Parameters:
      c - the char to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(ByteBuffer buf)
      Appends another ByteBuffer to this buffer.
      Parameters:
      buf - the ByteBuffer to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(int i)
      Appends the string representation of an int.
      Parameters:
      i - the int to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(byte b)

    • appendHex

      public ByteBuffer appendHex(byte b)

    • append

      public ByteBuffer append(float i)
      Appends a string representation of a float according to the Pdf conventions.
      Parameters:
      i - the float to be appended
      Returns:
      a reference to this ByteBuffer object

    • append

      public ByteBuffer append(double d)
      Appends a string representation of a double according to the Pdf conventions.
      Parameters:
      d - the double to be appended
      Returns:
      a reference to this ByteBuffer object

    • reset

      public void reset()
      Sets the size to zero.

    • toByteArray

      public byte[] toByteArray()
      Creates a newly allocated byte array. Its size is the current size of this output stream and the valid contents of the buffer have been copied into it.
      Returns:
      the current contents of this output stream, as a byte array.

    • size

      public int size()
      Returns the current size of the buffer.
      Returns:
      the value of the count field, which is the number of valid bytes in this byte buffer.

    • toString

      public String toString()
      Converts the buffer's contents into a string, translating bytes into characters according to the platform's default character encoding.
      Overrides:
      toString in class Object
      Returns:
      String translated from the buffer's contents.

    • writeTo

      public void writeTo(OutputStream out) throws IOException
      Writes the complete contents of this byte buffer output to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).
      Parameters:
      out - the output stream to which to write the data.
      Throws:
      IOException - if an I/O error occurs.

    • write

      public void write(int b)
      Specified by:
      write in class OutputStream

    • write

      public void write(byte[] b, int off, int len)
      Overrides:
      write in class OutputStream