osismorphsegmentation.cpp

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/******************************************************************************
 *
 *  osismorphsegmentation.cpp - SWFilter descendant to toggle splitting of
 *              morphemes (for morpheme segmented Hebrew in
 *              the WLC)
 *
 * $Id: osismorphsegmentation.cpp 3828 2020-11-24 23:15:44Z scribe $
 *
 * Copyright 2006-2013 CrossWire Bible Society (http://www.crosswire.org)
 *  CrossWire Bible Society
 *  P. O. Box 2528
 *  Tempe, AZ  85280-2528
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation version 2.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 */

#include <osismorphsegmentation.h>
#include <stdlib.h>
#include <utilxml.h>
#include <swmodule.h>
#include <swbuf.h>


SWORD_NAMESPACE_START

namespace {

    static const char oName[] = "Morpheme Segmentation";
    static const char oTip[]  = "Toggles Morpheme Segmentation On and Off, when present";

    static const StringList *oValues() {
        static const SWBuf choices[3] = {"Off", "On", ""};
        static const StringList oVals(&choices[0], &choices[2]);
        return &oVals;
    }
}


OSISMorphSegmentation::OSISMorphSegmentation() : SWOptionFilter(oName, oTip, oValues()) {
}


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;
    SWBuf tagText = "";
    unsigned int morphemeNum = 0;
    bool inMorpheme = false;
    SWBuf buf;

    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"))
                    || !strcmp("x-morph", tag.getAttribute("type")))) {  // <seg type="morph"> start tag
                    hide = !option; //only hide if option is Off
                    tagText = "";
                    inMorpheme = true;
                }

                if (tag.isEndTag() && inMorpheme) {
                        buf.setFormatted("%.3d", morphemeNum++);
                        module->getEntryAttributes()["Morpheme"][buf]["body"] = tagText;
                        inMorpheme = false;
                }
                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('>');

            if (inMorpheme) {
                tagText.append('<');
                tagText.append(token);
                tagText.append('>');
            }

            hide = false;

            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);
            if (inMorpheme) {
                tagText.append(*from);
            }
        }
    }
    return 0;
}

SWORD_NAMESPACE_END