Package org.apache.fontbox.cff

Interface DataInput

All Known Implementing Classes:
DataInputByteArray, DataInputRandomAccessRead
public interface DataInput
This interface defines some functionality to read a CFF font.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getPosition()
    Returns the current position.
    boolean
    hasRemaining()
    Determines if there are any bytes left to read or not.
    int
    length()
     
    int
    peekUnsignedByte(int offset)
    Peeks one single unsigned byte from the buffer.
    byte
    readByte()
    Read one single byte from the buffer.
    byte[]
    readBytes(int length)
    Read a number of single byte values from the buffer.
    default int
    readInt()
    Read one single int (4 bytes) from the buffer.
    default int
    readOffset(int offSize)
    Read the offset from the buffer.
    default short
    readShort()
    Read one single short value from the buffer.
    int
    readUnsignedByte()
    Read one single unsigned byte from the buffer.
    default int
    readUnsignedShort()
    Read one single unsigned short (2 bytes) value from the buffer.
    void
    setPosition(int position)
    Sets the current position to the given value.

  • Method Details

    • hasRemaining

      boolean hasRemaining() throws IOException
      Determines if there are any bytes left to read or not.
      Returns:
      true if there are any bytes left to read
      Throws:
      IOException - if an error occurs during reading

    • getPosition

      int getPosition() throws IOException
      Returns the current position.
      Returns:
      current position
      Throws:
      IOException - if an error occurs during reading

    • setPosition

      void setPosition(int position) throws IOException
      Sets the current position to the given value.
      Parameters:
      position - the given position
      Throws:
      IOException - if the new position ist out of range

    • readByte

      byte readByte() throws IOException
      Read one single byte from the buffer.
      Returns:
      the byte
      Throws:
      IOException - if an error occurs during reading

    • readUnsignedByte

      int readUnsignedByte() throws IOException
      Read one single unsigned byte from the buffer.
      Returns:
      the unsigned byte as int
      Throws:
      IOException - if an error occurs during reading

    • peekUnsignedByte

      int peekUnsignedByte(int offset) throws IOException
      Peeks one single unsigned byte from the buffer.
      Parameters:
      offset - offset to the byte to be peeked
      Returns:
      the unsigned byte as int
      Throws:
      IOException - if an error occurs during reading

    • readShort

      default short readShort() throws IOException
      Read one single short value from the buffer.
      Returns:
      the short value
      Throws:
      IOException - if an error occurs during reading

    • readUnsignedShort

      default int readUnsignedShort() throws IOException
      Read one single unsigned short (2 bytes) value from the buffer.
      Returns:
      the unsigned short value as int
      Throws:
      IOException - if an error occurs during reading

    • readInt

      default int readInt() throws IOException
      Read one single int (4 bytes) from the buffer.
      Returns:
      the int value
      Throws:
      IOException - if an error occurs during reading

    • readBytes

      byte[] readBytes(int length) throws IOException
      Read a number of single byte values from the buffer.
      Parameters:
      length - the number of bytes to be read
      Returns:
      an array with containing the bytes from the buffer
      Throws:
      IOException - if an error occurs during reading

    • length

      int length() throws IOException
      Throws:
      IOException

    • readOffset

      default int readOffset(int offSize) throws IOException
      Read the offset from the buffer.
      Parameters:
      offSize - the given offsize
      Returns:
      the offset
      Throws:
      IOException - if an error occurs during reading