Class FitsLineAppender

java.lang.Object
nom.tam.fits.utilities.FitsLineAppender
public class FitsLineAppender extends Object
This class handles the writing of a card line. It keeps track of the position in the line and will limit it to 80 characters. A write will never cross the line border but a write when the line is at position 80 will start a new line.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private final StringBuilder
    buffer
    the underlying StringBuilder to which the writing of fits lines happens.
    private int
    charCount
    the char current position in the line.
    private static final String
    FULL_CARD_AS_SPACES
    A String of 80 spaces to fill up fits card space.

  • Constructor Summary

    Constructors
    Constructor
    Description
    FitsLineAppender()
    create a new FitsLineAppender that will have space allocated for one line.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    append(char character)
    append a character to the fits line.
    void
    append(String string)
    append a string to the fits line, but limit the append to the line length.
    void
    append(String key, int start, int end)
     
    void
    append(FitsSubString stringValue)
    Append a sub-string to this line.
    void
    appendReplacing(String key, char toReplace, char with)
    append a string to the buffer, replacing all occurrences of a character with an other.
    void
    appendSpacesTo(int count)
    append a number of spaces to the line, limited to the line length! This will only be done if the line is already started, so attention when a line is still empty this method will have no effect on empty lines.
    void
    completeLine()
    fill the rest of current line with spaces and start a new fits line.
    int
    length()
     
    int
    spaceLeftInLine()
     
    String
    toString()
     

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Field Details

    • FULL_CARD_AS_SPACES

      private static final String FULL_CARD_AS_SPACES
      A String of 80 spaces to fill up fits card space.

    • buffer

      private final StringBuilder buffer
      the underlying StringBuilder to which the writing of fits lines happens.

    • charCount

      private int charCount
      the char current position in the line.

  • Constructor Details

    • FitsLineAppender

      public FitsLineAppender()
      create a new FitsLineAppender that will have space allocated for one line.

  • Method Details

    • append

      public void append(char character)
      append a character to the fits line.
      Parameters:
      character - the character to append to the line.

    • append

      public void append(FitsSubString stringValue)
      Append a sub-string to this line.
      Parameters:
      stringValue - the sub string to append.

    • append

      public void append(String string)
      append a string to the fits line, but limit the append to the line length. rest of the string will be silently truncated.
      Parameters:
      string - the string to append

    • appendReplacing

      public void appendReplacing(String key, char toReplace, char with)
      append a string to the buffer, replacing all occurrences of a character with an other.
      Parameters:
      key - the string to write
      toReplace - the character to replace
      with - the character to replace the toReplace character with.

    • appendSpacesTo

      public void appendSpacesTo(int count)
      append a number of spaces to the line, limited to the line length! This will only be done if the line is already started, so attention when a line is still empty this method will have no effect on empty lines.
      Parameters:
      count - the number of spaces to write.

    • completeLine

      public void completeLine()
      fill the rest of current line with spaces and start a new fits line.

    • length

      public int length()
      Returns:
      the character position in the current line.

    • spaceLeftInLine

      public int spaceLeftInLine()
      Returns:
      the number of characters still available in the current fits line.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • append

      public void append(String key, int start, int end)