File	Doc	Category	Size	Date	Package
LineContainsRegExp.java	API Doc	Apache Ant 1.70	7282	Wed Dec 13 06:16:20 GMT 2006	org.apache.tools.ant.filters

LineContainsRegExp

• java.lang.Object
  • BaseParamFilterReader

<linecontainsregexp>
<regexp pattern="foo*">
</linecontainsregexp>

<filterreader classname="org.apache.tools.ant.filters.LineContainsRegExp">
<param type="regexp" value="foo*"/>
</filterreader>

Fields Summary
private static final String	REGEXP_KEY Parameter name for the regular expression to filter on.
private static final String	NEGATE_KEY Parameter name for the words to filter on.
private Vector	regexps Vector that holds the expressions that input lines must contain.
private String	line Remaining line to be read from this filter, or null if the next call to read() should read the original stream to find the next matching line.
private boolean	negate

Constructors Summary
public LineContainsRegExp() Constructor for "dummy" instances. see BaseFilterReader#BaseFilterReader() super();
public LineContainsRegExp(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 void	addConfiguredRegexp(org.apache.tools.ant.types.RegularExpression regExp) Adds a regexp element. param regExp The regexp element to add. Must not be null. this.regexps.addElement(regExp);
public java.io.Reader	chain(java.io.Reader rdr) Creates a new LineContainsRegExp 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 LineContainsRegExp newFilter = new LineContainsRegExp(rdr); newFilter.setRegexps(getRegexps()); newFilter.setNegate(isNegated()); return newFilter;
private java.util.Vector	getRegexps() Returns the vector of regular expressions which must be contained within a line read from the original stream in order for it to match this filter. return the vector of regular expressions which must be contained within a line read from the original stream in order for it to match this filter. The returned object is "live" - in other words, changes made to the returned object are mirrored in the filter. return regexps;
private void	initialize() Parses parameters to add user defined regular expressions. Parameter[] params = getParameters(); if (params != null) { for (int i = 0; i < params.length; i++) { if (REGEXP_KEY.equals(params[i].getType())) { String pattern = params[i].getValue(); RegularExpression regexp = new RegularExpression(); regexp.setPattern(pattern); regexps.addElement(regexp); } else if (NEGATE_KEY.equals(params[i].getType())) { setNegate(Project.toBoolean(params[i].getValue())); } } }
public boolean	isNegated() Find out whether we have been negated. return boolean negation flag. return negate;
public int	read() Returns the next character in the filtered stream, only including lines from the original stream which match all of the specified regular expressions. 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 (line != null) { ch = line.charAt(0); if (line.length() == 1) { line = null; } else { line = line.substring(1); } } else { final int regexpsSize = regexps.size(); for (line = readLine(); line != null; line = readLine()) { boolean matches = true; for (int i = 0; matches && i < regexpsSize; i++) { RegularExpression regexp = (RegularExpression) regexps.elementAt(i); Regexp re = regexp.getRegexp(getProject()); matches = re.matches(line); } if (matches ^ isNegated()) { break; } } if (line != null) { return read(); } } return ch;
public void	setNegate(boolean b) Set the negation mode. Default false (no negation). param b the boolean negation mode to set. negate = b;
private void	setRegexps(java.util.Vector regexps) Sets the vector of regular expressions which must be contained within a line read from the original stream in order for it to match this filter. param regexps A vector of regular expressions which must be contained within a line in order for it to match in this filter. Must not be null. this.regexps = regexps;