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thmlvariants.cpp

/******************************************************************************
 *
 * thmlvariants -       SWFilter decendant to hide or show textual variants
 *                      in a ThML module.
 */


#include <stdlib.h>
#include <string.h>
#include <thmlvariants.h>
#ifndef __GNUC__
#else
#include <unixstr.h>
#endif


const char ThMLVariants::primary[] = "Primary Reading";
const char ThMLVariants::secondary[] = "Secondary Reading";
const char ThMLVariants::all[] = "All Readings";

const char ThMLVariants::optName[] = "Textual Variants";
const char ThMLVariants::optTip[] = "Switch between Textual Variants modes";


ThMLVariants::ThMLVariants() {
        option = false;
        options.push_back(primary);
        options.push_back(secondary);
        options.push_back(all);
}


ThMLVariants::~ThMLVariants() {
}

void ThMLVariants::setOptionValue(const char *ival)
{
        if (!stricmp(ival, primary)) option = 0;
        else if (!stricmp(ival, secondary)) option = 1;
        else option = 2;
}

const char *ThMLVariants::getOptionValue()
{
        if (option == 0) {
                return primary;
        }
        else if (option == 1) {
                return secondary;
        }
        else {
                return all;
        }
}

char ThMLVariants::ProcessText(char *text, int maxlen, const SWKey *key, const SWModule *module)
{
        if (option == 0) { //we want primary only
                char *to, *from, token[2048]; // cheese.  Fix.
                int tokpos = 0;
                bool intoken = false;
                int len;
                bool hide = false;

                len = strlen(text) + 1; // shift string to right of buffer
                if (len < maxlen) {
                        memmove(&text[maxlen - len], text, len);
                        from = &text[maxlen - len];
                }
                else    from = text;
                
                // -------------------------------

                for (to = text; *from; from++) {
                        if (*from == '<') {
                                intoken = true;
                                tokpos = 0;
                                token[0] = 0;
                                token[1] = 0;
                                token[2] = 0;
                                continue;
                        }
                        if (*from == '>') {     // process tokens
                                intoken = false;
                                if (!strncmp(token, "div type=\"variant\" class=\"2\"", 28)) {
                                  hide = true;
                                  continue;
                                }
                                else if (!strncmp(token, "/div", 4)) {
                                  hide = false;
                                  continue;
                                }

                                // if not a footnote token, keep token in text
                                if (!hide) {
                                        *to++ = '<';
                                        for (char *tok = token; *tok; tok++)
                                                *to++ = *tok;
                                        *to++ = '>';
                                }
                                continue;
                        }
                        if (intoken) {
                                if (tokpos < 2045)
                                        token[tokpos++] = *from;
                                        token[tokpos+2] = 0;
                        }
                        else    {
                                if (!hide) {
                                        *to++ = *from;
                                }
                        }
                }
                *to++ = 0;
                *to = 0;

        }
        else if (option == 1) { //we want variant only
                char *to, *from, token[2048]; // cheese.  Fix.
                int tokpos = 0;
                bool intoken = false;
                int len;
                bool hide = false;

                len = strlen(text) + 1; // shift string to right of buffer
                if (len < maxlen) {
                        memmove(&text[maxlen - len], text, len);
                        from = &text[maxlen - len];
                }
                else    from = text;

                // -------------------------------

                for (to = text; *from; from++) {
                        if (*from == '<') {
                                intoken = true;
                                tokpos = 0;
                                token[0] = 0;
                                token[1] = 0;
                                token[2] = 0;
                                continue;
                        }
                        if (*from == '>') {     // process tokens
                                intoken = false;
                                if (!strncmp(token, "div type=\"variant\" class=\"1\"", 28)) {
                                  hide = true;
                                  continue;
                                }
                                else if (!strncmp(token, "/div", 4)) {
                                  hide = false;
                                  continue;
                                }

                                // if not a footnote token, keep token in text
                                if (!hide) {
                                        *to++ = '<';
                                        for (char *tok = token; *tok; tok++)
                                                *to++ = *tok;
                                        *to++ = '>';
                                }
                                continue;
                        }
                        if (intoken) {
                                if (tokpos < 2045)
                                        token[tokpos++] = *from;
                                        token[tokpos+2] = 0;
                        }
                        else    {
                                if (!hide) {
                                        *to++ = *from;
                                }
                        }
                }
                *to++ = 0;
                *to = 0;

        }
        return 0;
}

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