osisreferencelinks.cpp

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/******************************************************************************
 *
 *  osisreferencelinks.cpp -    SWFilter descendant to toggle OSIS reference
 *              links with specified type/subType
 *
 * $Id: osisreferencelinks.cpp 2989 2013-10-09 08:22:21Z chrislit $
 *
 * Copyright 2001-2013 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 <osisreferencelinks.h>
#include <utilxml.h>
#include <swmodule.h>


SWORD_NAMESPACE_START


namespace {

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


OSISReferenceLinks::OSISReferenceLinks(const char *optionName, const char *optionTip, const char *type, const char *subType, const char *defaultValue)
        : SWOptionFilter(),
          optionName(optionName),
          optionTip(optionTip),
          type(type),
          subType(subType) {

    optName   = this->optionName.c_str();
    optTip    = this->optionTip.c_str();
    optValues = oValues();
    setOptionValue(defaultValue);
}


OSISReferenceLinks::~OSISReferenceLinks() {
}


char OSISReferenceLinks::processText(SWBuf &text, const SWKey *key, const SWModule *module) {
    if (option) return 0;
       
    SWBuf token;
    bool intoken        = false;
    bool stripThisToken = false;

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

    for (text = ""; *from; ++from) {
        if (*from == '<') {
            intoken = true;
            token = "";
            continue;
        }
        else if (*from == '>') {    // process tokens
            intoken = false;
            if (strncmp(token, "reference", 9) && strncmp(token.c_str(), "/reference", 10)) {
                text.append('<');
                text.append(token);
                text.append('>');
            }
            else {
                XMLTag tag;
                tag = token;
                if (!tag.isEndTag() && type == tag.getAttribute("type") && (!subType.size() || subType == tag.getAttribute("subType"))) {
                    stripThisToken = true;
                    continue;
                }
                else if (tag.isEndTag() && stripThisToken) {
                    stripThisToken = false;
                    continue;
                }
                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