osisredletterwords.cpp

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/******************************************************************************
 *
 *  osisredletterwords.cpp -    SWFilter descendant to toggle red coloring for
 *              words of Christ in an OSIS module
 *
 * $Id: osisredletterwords.cpp 2980 2013-09-14 21:51:47Z 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 <osisredletterwords.h>
#include <swmodule.h>


SWORD_NAMESPACE_START

namespace {

    static const char oName[] = "Words of Christ in Red";
    static const char oTip[]  = "Toggles Red Coloring for Words of Christ On and Off if they are marked";

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


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


OSISRedLetterWords::~OSISRedLetterWords() {
}


char OSISRedLetterWords::processText(SWBuf &text, const SWKey *key, const SWModule *module) {
    if (option) //leave in the red lettered words
        return 0;
    
    SWBuf token;
    bool intoken    = false;

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

    //taken out of the loop
    const char* start = 0;
    const char* end = 0;
        
    for (text = ""; *from; from++) {
        if (*from == '<') {
            intoken = true;
            token = "";
            continue;
        }
        else if (*from == '>') {    // process tokens
            intoken = false;

            if ((token[0] == 'q') && (token[1] == ' ')) { //q tag
                start = strstr(token.c_str(), " who=\"Jesus\"");
                if (start && (strlen(start) >= 12)) { //we found a quote of Jesus Christ
                    end = start+12; //marks the end of the who attribute value
                    
                    text.append('<');
                    text.append(token, start - (token.c_str())); //the text before the who attr
                    text.append(end, token.c_str() + token.length() - end);  //text after the who attr
                    text.append('>');
                    
                    continue;
                }
            }
            
            //token not processed, append it. We don't want to alter the text
            text.append('<');
            text.append(token);
            text.append('>');
            continue;
        }
        
        if (intoken) { //copy token
            token.append(*from);
        }
        else { //copy text which is not inside a token
            text.append(*from);
        }
    }
    return 0;
}

SWORD_NAMESPACE_END