Function adr_try_section_header

src/store/store.c:5687–5707

Try to extract a canonical section header from a "## Header" line. * Returns heap-allocated header string if canonical, NULL otherwise. */

/* Try to extract a canonical section header from a "## Header" line.
 * Returns heap-allocated header string if canonical, NULL otherwise. */
static char *adr_try_section_header(const char *line, int line_len) {
    if (line_len <= ST_HEADER_PREFIX || line[0] != '#' || line[SKIP_ONE] != '#' ||
        line[PAIR_LEN] != ' ') {
        return NULL;
    }
    char header[CBM_SZ_64];
    int hlen = line_len - ST_HEADER_PREFIX;
    if (hlen >= (int)sizeof(header)) {
        hlen = (int)sizeof(header) - SKIP_ONE;
    }
    memcpy(header, line + 3, hlen);
    header[hlen] = '\0';
    while (hlen > 0 && (header[hlen - SKIP_ONE] == ' ' || header[hlen - SKIP_ONE] == '\t' ||
                        header[hlen - SKIP_ONE] == '\r')) {
        header[--hlen] = '\0';
    }
    if (!is_canonical_section(header)) {
        return NULL;
    }
    return heap_strdup(header);
}

/* Append a line to the current section content buffer. */
static void adr_append_line(char *buf, int buf_sz, int *len, const char *line, int line_len) {