Function append_path_segments

internal/cbm/helpers.c:1190–1222

Append dotted path segments from rel_path (extension-stripped) to output buffer.

// Append dotted path segments from rel_path (extension-stripped) to output buffer.
static char *append_path_segments(char *out, const char *rel_path, size_t plen, bool has_name) {
    const char *start = rel_path;
    const char *end_ptr = rel_path + plen;
    while (start < end_ptr) {
        const char *slash = (const char *)memchr(start, '/', end_ptr - start);
        const char *part_end = slash ? slash : end_ptr;
        size_t part_len = (size_t)(part_end - start);

        if (part_len > 0) {
            bool is_last = (part_end == end_ptr);
            if (!should_skip_fqn_part(start, part_len, is_last, has_name)) {
                /* Drop a leading '.' from a dotfile / hidden-dir segment
                 * (".env" -> "env", ".github" -> "github"). Otherwise the QN
                 * separator '.' plus the segment's own leading '.' produce a
                 * malformed "proj..env" double-dot, and a root dotfile's empty
                 * stem collides with the project QN. */
                const char *seg = start;
                size_t seg_len = part_len;
                if (seg[0] == '.') {
                    seg++;
                    seg_len--;
                }
                if (seg_len > 0) {
                    *out++ = '.';
                    memcpy(out, seg, seg_len);
                    out += seg_len;
                }
            }
        }
        start = part_end + SKIP_ONE;
    }
    return out;
}

char *cbm_fqn_compute(CBMArena *a, const char *project, const char *rel_path, const char *name) {
    if (!project)