static int parse_oct(const char *t[], PROPERTY_DEFINITION *res)
{
    const char *s = *t;
    int64_t v = 0;
    if (*s == '9' || *s == '8' || !ossl_isdigit(*s))
        return 0;
    do {
        v = (v << 3) + (*s - '0');
    } while (ossl_isdigit(*++s) && *s != '9' && *s != '8');
    if (!ossl_isspace(*s) && *s != '\0' && *s != ',') {
        PROPerr(PROP_F_PARSE_OCT, PROP_R_NOT_AN_OCTAL_DIGIT);
        return 0;
    }
    *t = skip_space(s);
    res->type = PROPERTY_TYPE_NUMBER;
    res->v.int_val = v;
    return 1;
}
['static int test_register_deregister(void)\n{\n    static const struct {\n        int nid;\n        const char *prop;\n        char *impl;\n    } impls[] = {\n        { 6, "position=1", "a" },\n        { 6, "position=2", "b" },\n        { 6, "position=3", "c" },\n        { 6, "position=4", "d" },\n    };\n    size_t i;\n    int ret = 0;\n    OSSL_METHOD_STORE *store;\n    if (!TEST_ptr(store = ossl_method_store_new(NULL))\n        || !add_property_names("position", NULL))\n        goto err;\n    for (i = 0; i < OSSL_NELEM(impls); i++)\n        if (!TEST_true(ossl_method_store_add(store, impls[i].nid, impls[i].prop,\n                                             impls[i].impl, NULL))) {\n            TEST_note("iteration %zd", i + 1);\n            goto err;\n        }\n    for (i = 0; i < OSSL_NELEM(impls); i++) {\n        const size_t j = (1 + i * 3) % OSSL_NELEM(impls);\n        int nid = impls[j].nid;\n        void *impl = impls[j].impl;\n        if (!TEST_true(ossl_method_store_remove(store, nid, impl))\n            || !TEST_false(ossl_method_store_remove(store, nid, impl))) {\n            TEST_note("iteration %zd, position %zd", i + 1, j + 1);\n            goto err;\n        }\n    }\n    if (TEST_false(ossl_method_store_remove(store, impls[0].nid, impls[0].impl)))\n        ret = 1;\nerr:\n    ossl_method_store_free(store);\n    return ret;\n}', 'int ossl_method_store_add(OSSL_METHOD_STORE *store,\n                          int nid, const char *properties,\n                          void *method, void (*method_destruct)(void *))\n{\n    ALGORITHM *alg = NULL;\n    IMPLEMENTATION *impl;\n    int ret = 0;\n    if (nid <= 0 || method == NULL || store == NULL)\n        return 0;\n    if (properties == NULL)\n        properties = "";\n    impl = OPENSSL_malloc(sizeof(*impl));\n    if (impl == NULL)\n        return 0;\n    impl->method = method;\n    impl->method_destruct = method_destruct;\n    ossl_property_write_lock(store);\n    ossl_method_cache_flush(store, nid);\n    if ((impl->properties = ossl_prop_defn_get(store->ctx, properties)) == NULL) {\n        impl->properties = ossl_parse_property(store->ctx, properties);\n        if (impl->properties == NULL)\n            goto err;\n        ossl_prop_defn_set(store->ctx, properties, impl->properties);\n    }\n    alg = ossl_method_store_retrieve(store, nid);\n    if (alg == NULL) {\n        if ((alg = OPENSSL_zalloc(sizeof(*alg))) == NULL\n                || (alg->impls = sk_IMPLEMENTATION_new_null()) == NULL\n                || (alg->cache = lh_QUERY_new(&query_hash, &query_cmp)) == NULL)\n            goto err;\n        alg->nid = nid;\n        if (!ossl_method_store_insert(store, alg))\n            goto err;\n    }\n    if (sk_IMPLEMENTATION_push(alg->impls, impl))\n        ret = 1;\n    ossl_property_unlock(store);\n    if (ret == 0)\n        impl_free(impl);\n    return ret;\nerr:\n    ossl_property_unlock(store);\n    alg_cleanup(0, alg);\n    impl_free(impl);\n    return 0;\n}', "OSSL_PROPERTY_LIST *ossl_parse_property(OPENSSL_CTX *ctx, const char *defn)\n{\n    PROPERTY_DEFINITION *prop = NULL;\n    OSSL_PROPERTY_LIST *res = NULL;\n    STACK_OF(PROPERTY_DEFINITION) *sk;\n    const char *s = defn;\n    int done;\n    if (s == NULL || (sk = sk_PROPERTY_DEFINITION_new(&pd_compare)) == NULL)\n        return NULL;\n    s = skip_space(s);\n    done = *s == '\\0';\n    while (!done) {\n        prop = OPENSSL_malloc(sizeof(*prop));\n        if (prop == NULL)\n            goto err;\n        memset(&prop->v, 0, sizeof(prop->v));\n        prop->optional = 0;\n        if (!parse_name(ctx, &s, 1, &prop->name_idx))\n            goto err;\n        prop->oper = PROPERTY_OPER_EQ;\n        if (prop->name_idx == 0) {\n            PROPerr(PROP_F_OSSL_PARSE_PROPERTY, PROP_R_PARSE_FAILED);\n            goto err;\n        }\n        if (match_ch(&s, '=')) {\n            if (!parse_value(ctx, &s, prop, 1)) {\n                PROPerr(PROP_F_OSSL_PARSE_PROPERTY, PROP_R_NO_VALUE);\n                goto err;\n            }\n        } else {\n            prop->type = PROPERTY_TYPE_STRING;\n            prop->v.str_val = ossl_property_true;\n        }\n        if (!sk_PROPERTY_DEFINITION_push(sk, prop))\n            goto err;\n        prop = NULL;\n        done = !match_ch(&s, ',');\n    }\n    if (*s != '\\0') {\n        PROPerr(PROP_F_OSSL_PARSE_PROPERTY, PROP_R_TRAILING_CHARACTERS);\n        goto err;\n    }\n    res = stack_to_property_list(sk);\nerr:\n    OPENSSL_free(prop);\n    sk_PROPERTY_DEFINITION_pop_free(sk, &pd_free);\n    return res;\n}", 'static const char *skip_space(const char *s)\n{\n    while (ossl_isspace(*s))\n        s++;\n    return s;\n}', "static int parse_name(OPENSSL_CTX *ctx, const char *t[], int create,\n                      OSSL_PROPERTY_IDX *idx)\n{\n    char name[100];\n    int err = 0;\n    size_t i = 0;\n    const char *s = *t;\n    int user_name = 0;\n    for (;;) {\n        if (!ossl_isalpha(*s)) {\n            PROPerr(PROP_F_PARSE_NAME, PROP_R_NOT_AN_IDENTIFIER);\n            return 0;\n        }\n        do {\n            if (i < sizeof(name) - 1)\n                name[i++] = ossl_tolower(*s);\n            else\n                err = 1;\n        } while (*++s == '_' || ossl_isalnum(*s));\n        if (*s != '.')\n            break;\n        user_name = 1;\n        if (i < sizeof(name) - 1)\n            name[i++] = *s;\n        else\n            err = 1;\n        s++;\n    }\n    name[i] = '\\0';\n    *t = skip_space(s);\n    if (!err) {\n        *idx = ossl_property_name(ctx, name, user_name && create);\n        return 1;\n    }\n    PROPerr(PROP_F_PARSE_NAME, PROP_R_NAME_TOO_LONG);\n    return 0;\n}", 'static int match_ch(const char *t[], char m)\n{\n    const char *s = *t;\n    if (*s == m) {\n        *t = skip_space(s + 1);\n        return 1;\n    }\n    return 0;\n}', 'static int parse_value(OPENSSL_CTX *ctx, const char *t[],\n                       PROPERTY_DEFINITION *res, int create)\n{\n    const char *s = *t;\n    int r = 0;\n    if (*s == \'"\' || *s == \'\\\'\') {\n        s++;\n        r = parse_string(ctx, &s, s[-1], res, create);\n    } else if (*s == \'+\') {\n        s++;\n        r = parse_number(&s, res);\n    } else if (*s == \'-\') {\n        s++;\n        r = parse_number(&s, res);\n        res->v.int_val = -res->v.int_val;\n    } else if (*s == \'0\' && s[1] == \'x\') {\n        s += 2;\n        r = parse_hex(&s, res);\n    } else if (*s == \'0\' && ossl_isdigit(s[1])) {\n        s++;\n        r = parse_oct(&s, res);\n    } else if (ossl_isdigit(*s)) {\n        return parse_number(t, res);\n    } else if (ossl_isalpha(*s))\n        return parse_unquoted(ctx, t, res, create);\n    if (r)\n        *t = s;\n    return r;\n}', "static int parse_oct(const char *t[], PROPERTY_DEFINITION *res)\n{\n    const char *s = *t;\n    int64_t v = 0;\n    if (*s == '9' || *s == '8' || !ossl_isdigit(*s))\n        return 0;\n    do {\n        v = (v << 3) + (*s - '0');\n    } while (ossl_isdigit(*++s) && *s != '9' && *s != '8');\n    if (!ossl_isspace(*s) && *s != '\\0' && *s != ',') {\n        PROPerr(PROP_F_PARSE_OCT, PROP_R_NOT_AN_OCTAL_DIGIT);\n        return 0;\n    }\n    *t = skip_space(s);\n    res->type = PROPERTY_TYPE_NUMBER;\n    res->v.int_val = v;\n    return 1;\n}"]