parsers/Paragraphs.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

package scruf.parsers;

import java.util.regex.*;

public class Paragraphs implements Parser {
    private String paragraph = "<p>\n $5</p>\n";
    public String parse(String fileContent) {
	/**
	 * This regex contains two parts seperated by a '|';
	 * the first part is regex for a html Heading (See Heading.java)
	 * and the second part is the regex for a paragraph. For an input,
	 * if the first part of the regex is matched, then it is necessarily
	 * a Heading, so, we ignore it; but if the second part of the regex is
	 * matched for an input, then it is a paragraph, so, we put the necessary
	 * tags in place.
	 */
	Pattern pattern = Pattern.compile("((\\={10,})\\n(.+?)\\n(\\2))|((^.+$\\n)+)",Pattern.MULTILINE);
	Pattern htmlTagPattern = Pattern.compile("^\\<.+?\\>\\n");
	Matcher matcher = pattern.matcher(fileContent);
	Matcher htmlTag;
	StringBuffer sbuffer = new StringBuffer();
	while(matcher.find()) {
	    htmlTag = htmlTagPattern.matcher(matcher.group());
	    if(htmlTag.find()) { 
		System.out.println(htmlTag.group());
	    }else {
		matcher.appendReplacement(sbuffer,paragraph);
	    }
	}
	matcher.appendTail(sbuffer);
	return sbuffer.toString();
    }
}