/******************************************************************************
 *
 * osisfootnotes - SWFilter descendant to hide or show footnotes
 *   in an OSIS module.
 */


#include "osismorphsegmentation.h"

#include <stdlib.h>
#include <swmodule.h>
#include <swbuf.h>
#include <versekey.h>
#include <utilxml.h>
#include <utilstr.h>



namespace Filters {
const char OSISMorphSegmentation::oName[] = "Morph segmentation";
const char OSISMorphSegmentation::oTip[] = "Toggles morph segmentation On and Off if they exist";

const SWBuf OSISMorphSegmentation::choices[3] = {"Off", "On", ""};

const StringList OSISMorphSegmentation::oValues(&choices[0], &choices[2]);

OSISMorphSegmentation::OSISMorphSegmentation() : sword::SWOptionFilter(oName, oTip, &oValues) {
		setOptionValue("Off");
	}


	OSISMorphSegmentation::~OSISMorphSegmentation() {}


	char OSISMorphSegmentation::processText(SWBuf &text, const SWKey */*key*/, const SWModule */*module*/) {
		SWBuf token;
		bool intoken    = false;
		bool hide       = false;

		SWBuf orig( text );
		const char *from = orig.c_str();

		XMLTag tag;

		for (text = ""; *from; ++from) {
			if (*from == '<') {
				intoken = true;
				token = "";
				continue;
			}

			if (*from == '>') { // process tokens
				intoken = false;

				if (!strncmp(token.c_str(), "seg ", 4) || !strncmp(token.c_str(), "/seg", 4)) {
					tag = token;

					if (!tag.isEndTag() && tag.getAttribute("type") && !strcmp("morph", tag.getAttribute("type"))) {  //<seg type="morph"> start tag
						hide = (option == 0); //only hide if option is Off
					}

					if (hide) { //hides start and end tags as long as hide is set

						if (tag.isEndTag()) { //</seg>
							hide = false;
						}

						continue; //leave out the current token
					}
				} //end of seg tag handling

				text.append('<');
				text.append(token);
				text.append('>');

				//				hide = false; //not right, because there may be child tags in seg. Only /seg may disable the seg hiding.

				continue;
			} //end of intoken part

			if (intoken) { //copy token
				token.append(*from);
			}
			else { //copy text which is not inside of a tag
				text.append(*from);
			}
		}

		return 0;
	}

}