/*
 * Close_Last_Open_Tag.py - Inserts a closing tag for the
 * last un-closed element.  This macro assumes it's bound
 * to "/", so will always insert a "/".  It's intentionally
 * naive -- it simply scans backwards in the buffer, ignoring
 * self-closing elements and closes the last open one.  This
 * makes it useful for HTML/XML in Javadocs, strings, comments,
 * etc... where the XML plugin's tag insertion won't work.
 *
 * Copyright (C) 2004 Ollie Rutherfurd <oliver@rutherfurd.net>
 *
 * $Id$
 */

void closeLastOpenTag(View view){
	JEditTextArea textArea = view.getTextArea();
	int caret = textArea.getCaretPosition();
	char[] chars = textArea.getText(0,caret).toCharArray();
	int pos = caret-1;
	int stack = 0;
	boolean skip = false;

	// at start of buffer or "/" not following "<".
	if((pos == 0) ||
	   ((pos > 1) && (chars[pos] != '<')))
	{
		textArea.setSelectedText("/");
		return;
	}

	char c, n;
	pos--;	// always need two chars
	while(pos >= 0)
	{
		c = chars[pos];
		n = chars[pos+1];

		if(c == '<')
		{
			if(n == '/')
				stack--;
			else if('A' <= n && n <= 'z')
			{
				if(!skip)
				{
					stack++;
					if(stack > 0)
					{
						int i = pos + 1;
						StringBuffer tag = new StringBuffer("/");
						while(i < chars.length)
						{
							char x = chars[i];
							if((x >= 'A' && x <= 'z') 
								|| (x >= '0' && x <= '9')
								|| (x == '_')
								|| (x == ':')
								|| (x == '-'))
								tag.append(x);
							else
								break;
							i++;
						}
						tag.append(">");
						textArea.setSelectedText(tag.toString());
						return;
					}
				}

			}

		}
		else if(c == '/' && n == '>')
			skip = true;

		pos--;
	}

	textArea.setSelectedText("/");

}

if(!buffer.isReadOnly() && textArea.hasFocus())
	closeLastOpenTag(view);