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utf8cantillation.cpp

/******************************************************************************
 *
 * UTF8Cantillation - SWFilter decendant to remove UTF-8 Hebrew cantillation
 *
 */


#include <stdlib.h>
#include <stdio.h>
#include <utf8cantillation.h>


const char UTF8Cantillation::on[] = "On";
const char UTF8Cantillation::off[] = "Off";
const char UTF8Cantillation::optName[] = "Hebrew Cantillation";
const char UTF8Cantillation::optTip[] = "Toggles Hebrew Cantillation Marks";

UTF8Cantillation::UTF8Cantillation() {
        option = false;
        options.push_back(on);
        options.push_back(off);
}

UTF8Cantillation::~UTF8Cantillation(){};

void UTF8Cantillation::setOptionValue(const char *ival)
{
        option = (!stricmp(ival, on));
}

const char *UTF8Cantillation::getOptionValue()
{
        return (option) ? on:off;
}

char UTF8Cantillation::ProcessText(char *text, int maxlen, const SWKey *key, const SWModule *module)
{
        if (!option) {
        unsigned char *to, *from;
        to = (unsigned char*)text;
        //The UTF-8 range 0xD6 0x90 to 0xD6 0xAF and 0xD7 0x84 consist of Hebrew cantillation marks so block those out.
        for (from = (unsigned char*)text; *from; from++) {
          if (*from != 0xD6) {
            if (*from == 0xD7 && *(from + 1) == 0x84) {
              from++;
            }
            else {
              *to++ = *from;
            }
          }
          else if (*(from + 1) < 0x90 || *(from + 1) > 0xAF) {
            *to++ = *from;
            from++;
            *to++ = *from;
          }
          else {
                from++;
          }
        }
        *to++ = 0;
        *to = 0;
     }
        return 0;
}

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