File	Doc	Category	Size	Date	Package
TabsToSpaces.java	API Doc	Apache Ant 1.70	4539	Wed Dec 13 06:16:22 GMT 2006	org.apache.tools.ant.filters

TabsToSpaces

• java.lang.Object
  • BaseParamFilterReader

<tabtospaces tablength="8"/>

<filterreader classname="org.apache.tools.ant.filters.TabsToSpaces">
<param name="tablength" value="8"/>
</filterreader>

Fields Summary
private static final int	DEFAULT_TAB_LENGTH The default tab length.
private static final String	TAB_LENGTH_KEY Parameter name for the length of a tab.
private int	tabLength Tab length in this filter.
private int	spacesRemaining The number of spaces still to be read to represent the last-read tab.

Constructors Summary
public TabsToSpaces() Constructor for "dummy" instances. see BaseFilterReader#BaseFilterReader() super();
public TabsToSpaces(Reader in) Creates a new filtered reader. param in A Reader object providing the underlying stream. Must not be null. super(in);

Methods Summary
public java.io.Reader	chain(java.io.Reader rdr) Creates a new TabsToSpaces using the passed in Reader for instantiation. param rdr A Reader object providing the underlying stream. Must not be null. return a new filter based on this configuration, but filtering the specified reader TabsToSpaces newFilter = new TabsToSpaces(rdr); newFilter.setTablength(getTablength()); newFilter.setInitialized(true); return newFilter;
private int	getTablength() Returns the tab length. return the number of spaces used when converting a tab return tabLength;
private void	initialize() Parses the parameters to set the tab length. Parameter[] params = getParameters(); if (params != null) { for (int i = 0; i < params.length; i++) { if (params[i] != null) { if (TAB_LENGTH_KEY.equals(params[i].getName())) { tabLength = new Integer(params[i].getValue()).intValue(); break; } } } }
public int	read() Returns the next character in the filtered stream, converting tabs to the specified number of spaces. return the next character in the resulting stream, or -1 if the end of the resulting stream has been reached exception IOException if the underlying stream throws an IOException during reading if (!getInitialized()) { initialize(); setInitialized(true); } int ch = -1; if (spacesRemaining > 0) { spacesRemaining--; ch = ' "; } else { ch = in.read(); if (ch == '\t") { spacesRemaining = tabLength - 1; ch = ' "; } } return ch;
public void	setTablength(int tabLength) Sets the tab length. param tabLength the number of spaces to be used when converting a tab. this.tabLength = tabLength;