osislemma.cpp

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/******************************************************************************
 *
 *  osislemma.cpp - SWFilter descendant to hide or show lemmata
 *              in a OSIS module
 *
 * $Id: osislemma.cpp 3482 2017-06-25 14:36:23Z scribe $
 *
 * Copyright 2003-2013 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 <stdlib.h>
#include <osislemma.h>
#include <utilxml.h>


SWORD_NAMESPACE_START

namespace {

    static const char oName[] = "Lemmas";
    static const char oTip[]  = "Toggles Lemmas On and Off if they exist";

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


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


OSISLemma::~OSISLemma() {
}


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

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

    if (!option) {
        for (text = ""; *from; ++from) {
            if (*from == '<') {
                intoken = true;
                token = "";
                continue;
            }
            if (*from == '>') { // process tokens
                intoken = false;
                if (token.startsWith("w ")) {   // Word
                    XMLTag wtag(token);

                    // always save off lemma if we haven't yet
                    if (!wtag.getAttribute("savlm")) {
                        const char *l = wtag.getAttribute("lemma");
                        if (l) {
                            wtag.setAttribute("savlm", l);
                        }
                    }

                    int count = wtag.getAttributePartCount("lemma", ' ');
                    for (int i = 0; i < count; i++) {
                        SWBuf a = wtag.getAttribute("lemma", i, ' ');
                        const char *prefix = a.stripPrefix(':');
                        if ((!prefix) || ((SWBuf)prefix).startsWith("lemma.")) {
                            // remove attribute part
                            wtag.setAttribute("lemma", 0, i, ' ');
                            i--;
                            count--;
                        }
                    }

                    token = wtag;
                    token.trim();
                    // drop <>
                    token << 1;
                    token--;
                }
                
                // keep token in text
                text.append('<');
                text.append(token);
                text.append('>');
                
                continue;
            }
            if (intoken) {
                token += *from;
            }
            else    {
                text.append(*from);
            }
        }
    }
    return 0;
}

SWORD_NAMESPACE_END