Function dist_parse_layers

ds4_distributed.c:8036–8076

        *out = DS4_DISTRIBUTED_COORDINATOR;
        return true;
    }
    if (!strcmp(s, "worker")) {
        *out = DS4_DISTRIBUTED_WORKER;
        return true;
    }
    return false;
}

static bool dist_parse_u32_component(const char *p, size_t len, uint32_t *out) {
    if (!p || len == 0 || !out) return false;
    char buf[32];
    if (len >= sizeof(buf)) return false;
    memcpy(buf, p, len);
    buf[len] = '\0';

    errno = 0;
    char *end = NULL;
    unsigned long v = strtoul(buf, &end, 10);
    if (errno != 0 || end == buf || *end != '\0' || v > UINT32_MAX) return false;
    *out = (uint32_t)v;
    return true;
}

static bool dist_parse_layers(const char *s, ds4_distributed_layers *out, char *err, size_t errlen) {
    if (!s || !out) {
        if (errlen) snprintf(err, errlen, "missing layer range");
        return false;
    }

    const char *colon = strchr(s, ':');
    if (!colon || colon == s || colon[1] == '\0') {
        if (errlen) snprintf(err, errlen, "expected A:B or A:output");
        return false;
    }
    if (strchr(colon + 1, ':')) {
        if (errlen) snprintf(err, errlen, "layer range has too many ':' separators");
        return false;
    }

    ds4_distributed_layers parsed = {0};
    if (!dist_parse_u32_component(s, (size_t)(colon - s), &parsed.start)) {
        if (errlen) snprintf(err, errlen, "invalid start layer in %s", s);
        return false;
    }