osismorph.cpp

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/******************************************************************************
 *
 *  osismorph.cpp - SWFilter descendant to hide or show morph tags
 *          in a OSIS module
 *
 * $Id: osismorph.cpp 3427 2016-07-03 14:30:33Z 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 <osismorph.h>

SWORD_NAMESPACE_START

namespace {

    static const char oName[] = "Morphological Tags";
    static const char oTip[]  = "Toggles Morphological Tags 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;
    }

}

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


OSISMorph::~OSISMorph() {
}


char OSISMorph::processText(SWBuf &text, const SWKey *key, const SWModule *module) {
    if (!option) {  // if we don't want morph tags
        char token[2048]; // cheese.  Fix.
        int tokpos = 0;
        bool intoken = false;
        SWBuf orig = text;
        const char *from = orig.c_str();
        
        //taken out of the loop for speed
        const char* start = 0;
        const char* end = 0;

        for (text = ""; *from; ++from) {
            if (*from == '<') {
                intoken = true;
                tokpos = 0;
                token[0] = 0;
                continue;
            }
            if (*from == '>') { // process tokens
                intoken = false;
                
                if ((*token == 'w') && (token[1] == ' ')) {
                    start = strstr(token+2, "morph=\""); //we leave out "w " at the start
                    end = start ? strchr(start+7, '"') : 0; //search the end of the morph value

                    if (start && end) { //start and end of the morph tag found
                        text.append('<');
                        text.append(token, start-token); //the text before the morph attr
                        text.append(end+1); //text after the morph attr
                        text.append('>');
                        
                        continue; //next loop
                    }
                }
                
                text.append('<');
                text.append(token);
                text.append('>');
                
                continue;
            }
            if (intoken) {
                if (tokpos < 2045) {
                    token[tokpos++] = *from;
                    token[tokpos] = 0;
                }
            }
            else {
                text.append(*from);
            }
        }
    }
    return 0;
}

SWORD_NAMESPACE_END