Input and Output - Java - page 405

return return false false ;

}

}

The ContLineReader class ends with code for handling the read() calls so that the class
will work correctly. The IndentContLineReader class extends this to allow merging of lines
based on indentation. Example 10-9 shows the code for the IndentContLineReader class.

Example 10-9. IndentContLineReader.java
public public class class IndentContLineReader IndentContLineReader extends extends ContLineReader {

/** Line number of first line in current (possibly continued) line */
public

public int int getLineNumber () {

return return firstLineNumber ;

}

protected protected String prevLine ;

/** Read one (possibly continued) line, stripping out the '\'s that
* mark the end of all but the last.
*/
public

public String readLine () throws throws IOException {

String s ;

// If we saved a previous line, start with it. Else,
// read the first line of possible continuation.
// If non-null, put it into the StringBuffer and its line
// number in firstLineNumber.
iif ( prevLine != null null ) {

s = prevLine ;
prevLine = null

null ;

}
else else {

s = readPhysicalLine ();

}

// save the line number of the first line.
firstLineNumber = super super . getLineNumber ();

// Now we have one line. If we are not in continuation
// mode, or if a previous readPhysicalLine() returned null,
// we are finished, so return it.
iif (! doContinue || s == null null )

return return s ;