papyriplain.cpp

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/******************************************************************************
 *
 *  papyriplain.cpp -   SWFilter descendant to strip out all Papyri tags
 *
 * $Id: papyriplain.cpp 2980 2013-09-14 21:51:47Z scribe $
 *
 * Copyright 2005-2013 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 <papyriplain.h>

SWORD_NAMESPACE_START


PapyriPlain::PapyriPlain() {
}


char PapyriPlain::processText (SWBuf &text, const SWKey *key, const SWModule *module)
{
    SWBuf orig = text;
    const char *from = orig.c_str();
    
    for (text = ""; *from; ++from) {

        // remove hyphen and whitespace if that is all that separates words
        // also be sure we're not a double hyphen '--'
        if ((*from == '-') && (text.length() > 0) && (text[text.length()-1] != '-')) {
            char remove = 0;
            const char *c;
            for (c = from+1; *c; c++) {
                if ((*c == 10) || (*c == 13)) {
                    remove = 1;
                }
                if (!strchr(" \t\n", *c)) {
                    if (remove) remove++;
                    break;
                }
            }
            if (remove > 1) {
                from = c-1;
                continue;
            }
        }

        // remove all newlines
        if ((*from == 10) || (*from == 13)) {
            if ((text.length()>1) && (text[text.length()-2] != ' ') && (*(from+1) != ' '))
                text.append(' ');
            continue;
        }

                
        // strip odd characters
        switch (*from) {
        case '(':
        case ')':
        case '[':
        case ']':
        case '{':
        case '}':
        case '<':
        case '>':
            continue;
        }

        // if we've made it this far
        text.append(*from);

    }
    return 0;
}

SWORD_NAMESPACE_END