// Macro XEnter.bsh

// Author: Gael Ecorchard (galou_breizh yahoo.fr)
// Version 0.1
// 2007 08 30

// insert new line, then behaves
// either as normal insert enter and indent, if the line is a normal code line
// or insert the line comment token and indent the line if the current line
// is a comment

// Usage:
// - use the macro at the end of a comment line

// Best used with a shortcut like S-Enter

import java.util.regex.Pattern;
import java.util.regex.Matcher;

lineCommentToken = buffer.getStringProperty("lineComment") ;
Pattern pattern = Pattern.compile("\\s*" + lineCommentToken + "\\s*");

// main subroutine
void XEnter()
{
    line = textArea.getCaretLine();
    LineText = textArea.getLineText(line);
    Matcher matcher = pattern.matcher(LineText);
    if (matcher.find())
    {
        // insert "\n" without indenting
        textArea.insert("\n",false);

        // insert the matching expression which contains the indentation
        textArea.insert(matcher.group(),false);
    }
    else
    {
        // if the line doesn't match the regexpr, do insertEnterAndIndent
        // if Enter is mapped to something else, this will cause problem
        textArea.insertEnterAndIndent();
    }
}

// this single line of code is the script's main routine
// it calls the methods and exits
if(buffer.isReadOnly())
	Macros.error(view, "Buffer is read-only.");
else
	XEnter();