/*
 * Normalization rules for Arabic text
 * [this is a JFlex specification]
 *
 * Wolfgang Schmidle 
 * version 2011-02-28
 *
 */

package de.mpg.mpiwg.berlin.mpdl.lt.text.norm.lang;

%%

%public
%class MpdlNormalizerLexAR
%type java.lang.String
%unicode

// Arabic: ar

%states DISP, DICT, SEARCH

%{
	private String original = "";
	private String normalized = "";
	private int problem = 0;
	
	private void add (String norm) {
		original += yytext(); 
		normalized += norm;
	}

	private static final String LB = "[\u002d\u00ad] ";
%}

hyphen = [-\u{00ad}]  // hyphen and soft hyphen
LB = {hyphen} \u0020
// lb = ({hyphen} \u0020)?

END = \n

%%

// jump over empty xml elements
"<"[^><]+"/>" { add(yytext()); }
"-<"[^><]+"/>" { add(yytext()); }
"<"[^><]+"></"[^><]+">" { add(yytext()); }
"-<"[^><]+"></"[^><]+">" { add(yytext()); }

@ { problem = 1; add(yytext()); }
{LB} { add(yytext()); }
. { add(yytext()); }


<DISP> {

{END} {
		switch (problem) {
			case 1: return original;
			default: return normalized;
		}
	}
}

<DICT> {

{END} {
		switch (problem) {
			case 1: return "";
			default: return normalized.replaceAll(LB, "");
		}
	}
}

<SEARCH> {

{END} {
		switch (problem) {
			case 1: return original;
			default: return normalized.replaceAll(LB, "");
		}
	}
}


/*

Annahmen:
- die Routine wird wortweise aufgerufen, mit einem \n am Ende des Strings
- Zeilenumbrüche innerhalb des Wortes sind als hyphen/soft hyphen plus space markiert

TO DO:

AR: fehlt noch

*/