format-u01.c

/* TODO: AFAIK this is a duplicate of U00. Review for differences and merge files and handle accordingly. */

/*! Reads a file with the given \a fileName and loads the data into \a pattern.
 *  Returns \c true if successful, otherwise returns \c false. */
static int readU01(EmbPattern* pattern, EmbFile* file, const char* fileName)
{
    int fileLength, negativeX = 0, negativeY = 0, flags = NORMAL;
    char dx, dy;
    unsigned char data[3];

    embFile_seek(file, 0, SEEK_END);
    fileLength = embFile_tell(file);
    embFile_seek(file, 0x100, SEEK_SET);
    while (embFile_read(data, 1, 3, file) == 3) {
        if (data[0] == 0xF8 || data[0] == 0x87 || data[0] == 0x91) {
            break;
        }
        if ((data[0] & 0x0F) == 0) {
            flags = NORMAL;
        } else if ((data[0] & 0x1f) == 1) {
            flags = JUMP;
        } else if ((data[0] & 0x0F) > 0) {
            flags = STOP;
        }
        negativeX = ((data[0] & 0x20) > 0);
        negativeY = ((data[0] & 0x40) > 0);

        dx = (char)data[2];
        dy = (char)data[1];
        if (negativeX)
            dx = (char)-dx;
        if (negativeY)
            dy = (char)-dy;
        embPattern_addStitchRel(pattern, dx / 10.0, dy / 10.0, flags, 1);
    }
    return 1;
}

/*! Writes the data from \a pattern to a file with the given \a fileName.
 *  Returns \c true if successful, otherwise returns \c false. */
static int writeU01(EmbPattern* pattern, EmbFile* file, const char* fileName)
{
    return 0; /*TODO: finish writeU01 */
}