Function find_emph_char

libraries/hoedown/src/document.c:510–600

find_emph_char • looks for the next emph uint8_t, skipping other constructs */

/* find_emph_char • looks for the next emph uint8_t, skipping other constructs */
static size_t
find_emph_char(uint8_t *data, size_t size, uint8_t c)
{
    size_t i = 0;

    while (i < size) {
        while (i < size && data[i] != c && data[i] != '[' && data[i] != '`')
            i++;

        if (i == size)
            return 0;

        /* not counting escaped chars */
        if (is_escaped(data, i)) {
            i++; continue;
        }

        if (data[i] == c)
            return i;

        /* skipping a codespan */
        if (data[i] == '`') {
            size_t span_nb = 0, bt;
            size_t tmp_i = 0;

            /* counting the number of opening backticks */
            while (i < size && data[i] == '`') {
                i++; span_nb++;
            }

            if (i >= size) return 0;

            /* finding the matching closing sequence */
            bt = 0;
            while (i < size && bt < span_nb) {
                if (!tmp_i && data[i] == c) tmp_i = i;
                if (data[i] == '`') bt++;
                else bt = 0;
                i++;
            }

            /* not a well-formed codespan; use found matching emph char */
            if (i >= size) return tmp_i;
        }
        /* skipping a link */
        else if (data[i] == '[') {
            size_t tmp_i = 0;
            uint8_t cc;

            i++;
            while (i < size && data[i] != ']') {
                if (!tmp_i && data[i] == c) tmp_i = i;
                i++;
            }

            i++;
            while (i < size && _isspace(data[i]))
                i++;