static int
check_instances(SordModel* model, const URIs* uris)
{
int st = 0;
SordIter* r = sord_search(
model, NULL, uris->rdf_type, uris->owl_Restriction, NULL);
for (; !sord_iter_end(r); sord_iter_next(r)) {
const SordNode* restriction = sord_iter_get_node(r, SORD_SUBJECT);
const SordNode* prop = sord_get(
model, restriction, uris->owl_onProperty, NULL, NULL);
if (!prop) {
continue;
}
SordIter* c = sord_search(
model, NULL, uris->rdfs_subClassOf, restriction, NULL);
for (; !sord_iter_end(c); sord_iter_next(c)) {
const SordNode* klass = sord_iter_get_node(c, SORD_SUBJECT);
check_class_instances(model, uris, restriction, klass);
}
sord_iter_free(c);
}
sord_iter_free(r);
return st;
}
static bool
is_descendant_of(SordModel* model,
const URIs* uris,
const SordNode* child,
const SordNode* parent,
const SordNode* pred)
{
if (!child) {
return false;
} else if (sord_node_equals(child, parent) ||
sord_ask(model, child, uris->owl_equivalentClass, parent, NULL)) {
return true;
}
SordIter* i = sord_search(model, child, pred, NULL, NULL);
for (; !sord_iter_end(i); sord_iter_next(i)) {
const SordNode* o = sord_iter_get_node(i, SORD_OBJECT);
if (sord_node_equals(child, o)) {
continue; // Weird class is explicitly a descendent of itself
}
if (is_descendant_of(model, uris, o, parent, pred)) {
sord_iter_free(i);
return true;
}
}
sord_iter_free(i);
return false;
}
uint64_t
sord_count(SordModel* model,
const SordNode* s,
const SordNode* p,
const SordNode* o,
const SordNode* g)
{
SordIter* i = sord_search(model, s, p, o, g);
uint64_t n = 0;
for (; !sord_iter_end(i); sord_iter_next(i)) {
++n;
}
sord_iter_free(i);
return n;
}
static int
check_class_instances(SordModel* model,
const URIs* uris,
const SordNode* restriction,
const SordNode* klass)
{
// Check immediate instances of this class
SordIter* i = sord_search(model, NULL, uris->rdf_type, klass, NULL);
for (; !sord_iter_end(i); sord_iter_next(i)) {
const SordNode* instance = sord_iter_get_node(i, SORD_SUBJECT);
check_instance(model, uris, restriction, instance);
}
sord_iter_free(i);
// Check instances of all subclasses recursively
SordIter* s = sord_search(model, NULL, uris->rdfs_subClassOf, klass, NULL);
for (; !sord_iter_end(s); sord_iter_next(s)) {
const SordNode* subklass = sord_iter_get_node(s, SORD_SUBJECT);
check_class_instances(model, uris, restriction, subklass);
}
sord_iter_free(s);
return 0;
}
static bool
check_type(SordModel* model,
const URIs* uris,
const SordNode* node,
const SordNode* type)
{
if (sord_node_equals(type, uris->rdfs_Resource) ||
sord_node_equals(type, uris->owl_Thing)) {
return true;
}
if (sord_node_get_type(node) == SORD_LITERAL) {
if (sord_node_equals(type, uris->rdfs_Literal)) {
return true;
} else if (sord_node_equals(type, uris->rdf_PlainLiteral)) {
return !sord_node_get_language(node);
} else {
return literal_is_valid(model, uris, node, type);
}
} else if (sord_node_get_type(node) == SORD_URI) {
if (sord_node_equals(type, uris->foaf_Document)) {
return true; // Questionable...
} else if (is_descendant_of(
model, uris,
type, uris->xsd_anyURI, uris->owl_onDatatype)) {
/* Type is any URI and this is a URI, so pass. Restrictions on
anyURI subtypes are not currently checked (very uncommon). */
return true; // Type is anyURI, and this is a URI
} else {
SordIter* t = sord_search(model, node, uris->rdf_type, NULL, NULL);
for (; !sord_iter_end(t); sord_iter_next(t)) {
if (is_descendant_of(model, uris,
sord_iter_get_node(t, SORD_OBJECT),
type,
uris->rdfs_subClassOf)) {
sord_iter_free(t);
return true;
}
}
sord_iter_free(t);
return false;
}
} else {
return true; // Blanks often lack explicit types, ignore
}
return false;
}
SordNode*
sord_get(SordModel* model,
const SordNode* s,
const SordNode* p,
const SordNode* o,
const SordNode* g)
{
if ((bool)s + (bool)p + (bool)o != 2) {
return NULL;
}
SordIter* i = sord_search(model, s, p, o, g);
SordNode* ret = NULL;
if (!s) {
ret = sord_node_copy(sord_iter_get_node(i, SORD_SUBJECT));
} else if (!p) {
ret = sord_node_copy(sord_iter_get_node(i, SORD_PREDICATE));
} else if (!o) {
ret = sord_node_copy(sord_iter_get_node(i, SORD_OBJECT));
}
sord_iter_free(i);
return ret;
}
static int
check_instance(SordModel* model,
const URIs* uris,
const SordNode* restriction,
const SordNode* instance)
{
int st = 0;
const SordNode* prop = sord_get(
model, restriction, uris->owl_onProperty, NULL, NULL);
if (!prop) {
return 0;
}
const unsigned values = sord_count(model, instance, prop, NULL, NULL);
// Check exact cardinality
const SordNode* card = sord_get(
model, restriction, uris->owl_cardinality, NULL, NULL);
if (card) {
const unsigned c = atoi((const char*)sord_node_get_string(card));
if (values != c) {
st = errorf("Property %s on %s has %u != %u values\n",
sord_node_get_string(prop),
sord_node_get_string(instance),
values, c);
}
}
// Check minimum cardinality
const SordNode* minCard = sord_get(
model, restriction, uris->owl_minCardinality, NULL, NULL);
if (minCard) {
const unsigned m = atoi((const char*)sord_node_get_string(minCard));
if (values < m) {
st = errorf("Property %s on %s has %u < %u values\n",
sord_node_get_string(prop),
sord_node_get_string(instance),
values, m);
}
}
// Check someValuesFrom
SordIter* sf = sord_search(
model, restriction, uris->owl_someValuesFrom, NULL, NULL);
if (sf) {
const SordNode* type = sord_iter_get_node(sf, SORD_OBJECT);
SordIter* v = sord_search(model, instance, prop, NULL, NULL);
bool found = false;
for (; !sord_iter_end(v); sord_iter_next(v)) {
const SordNode* value = sord_iter_get_node(v, SORD_OBJECT);
if (check_type(model, uris, value, type)) {
found = true;
break;
}
}
if (!found) {
st = errorf("%s has no <%s> values of type <%s>\n",
sord_node_get_string(instance),
sord_node_get_string(prop),
sord_node_get_string(type));
}
sord_iter_free(v);
}
sord_iter_free(sf);
return st;
}
static int
check_properties(SordModel* model, URIs* uris)
{
int st = 0;
SordIter* i = sord_begin(model);
for (; !sord_iter_end(i); sord_iter_next(i)) {
SordQuad quad;
sord_iter_get(i, quad);
const SordNode* subj = quad[SORD_SUBJECT];
const SordNode* pred = quad[SORD_PREDICATE];
const SordNode* obj = quad[SORD_OBJECT];
bool is_any_property = false;
SordIter* t = sord_search(model, pred, uris->rdf_type, NULL, NULL);
for (; !sord_iter_end(t); sord_iter_next(t)) {
if (is_descendant_of(model, uris,
sord_iter_get_node(t, SORD_OBJECT),
uris->rdf_Property,
uris->rdfs_subClassOf)) {
is_any_property = true;
break;
}
}
sord_iter_free(t);
const bool is_ObjectProperty = sord_ask(
model, pred, uris->rdf_type, uris->owl_ObjectProperty, 0);
const bool is_FunctionalProperty = sord_ask(
model, pred, uris->rdf_type, uris->owl_FunctionalProperty, 0);
const bool is_InverseFunctionalProperty = sord_ask(
model, pred, uris->rdf_type, uris->owl_InverseFunctionalProperty, 0);
const bool is_DatatypeProperty = sord_ask(
model, pred, uris->rdf_type, uris->owl_DatatypeProperty, 0);
if (!is_any_property) {
st = error("Use of undefined property", quad);
}
if (!sord_ask(model, pred, uris->rdfs_label, NULL, NULL)) {
st = errorf("Property <%s> has no label\n",
sord_node_get_string(pred));
}
if (is_DatatypeProperty &&
sord_node_get_type(obj) != SORD_LITERAL) {
st = error("Datatype property with non-literal value", quad);
}
if (is_ObjectProperty &&
sord_node_get_type(obj) == SORD_LITERAL) {
st = error("Object property with literal value", quad);
}
if (is_FunctionalProperty &&
sord_count(model, subj, pred, NULL, NULL) > 1) {
st = error("Functional property with several objects", quad);
}
if (is_InverseFunctionalProperty &&
sord_count(model, NULL, pred, obj, NULL) > 1) {
st = error("Inverse functional property with several subjects", quad);
}
if (sord_node_equals(pred, uris->rdf_type) &&
!sord_ask(model, obj, uris->rdf_type, uris->rdfs_Class, NULL) &&
!sord_ask(model, obj, uris->rdf_type, uris->owl_Class, NULL)) {
st = error("Type is not a rdfs:Class or owl:Class", quad);
}
if (sord_node_get_type(obj) == SORD_LITERAL &&
!literal_is_valid(model, uris, obj, sord_node_get_datatype(obj))) {
st = error("Literal does not match datatype", quad);
}
SordIter* r = sord_search(model, pred, uris->rdfs_range, NULL, NULL);
for (; !sord_iter_end(r); sord_iter_next(r)) {
const SordNode* range = sord_iter_get_node(r, SORD_OBJECT);
if (!check_type(model, uris, obj, range)) {
st = error("Object not in property range", quad);
fprintf(stderr, "note: Range is <%s>\n",
sord_node_get_string(range));
}
}
sord_iter_free(r);
SordIter* d = sord_search(model, pred, uris->rdfs_domain, NULL, NULL);
if (d) {
const SordNode* domain = sord_iter_get_node(d, SORD_OBJECT);
if (!check_type(model, uris, subj, domain)) {
st = error("Subject not in property domain", quad);
fprintf(stderr, "note: Domain is <%s>\n",
sord_node_get_string(domain));
}
sord_iter_free(d);
}
}
sord_iter_free(i);
return st;
}
static bool
literal_is_valid(SordModel* model,
const URIs* uris,
const SordNode* literal,
const SordNode* type)
{
if (!type) {
return true;
}
/* Check that literal data is related to required type. We don't do a
strict subtype check here because e.g. an xsd:decimal might be a valid
xsd:unsignedInt, which the pattern checks will verify, but if the
literal type is not related to the required type at all
(e.g. xsd:decimal and xsd:string) there is a problem. */
const SordNode* datatype = sord_node_get_datatype(literal);
if (datatype && datatype != type) {
if (!is_descendant_of(
model, uris,
datatype, type, uris->owl_onDatatype) &&
!is_descendant_of(
model, uris,
type, datatype, uris->owl_onDatatype)) {
errorf("Literal `%s' datatype <%s> is not compatible with <%s>\n",
sord_node_get_string(literal),
sord_node_get_string(datatype),
sord_node_get_string(type));
return false;
}
}
// Find restrictions list
SordIter* rs = sord_search(model, type, uris->owl_withRestrictions, 0, 0);
if (sord_iter_end(rs)) {
return true; // No restrictions
}
// Walk list, checking each restriction
const SordNode* head = sord_iter_get_node(rs, SORD_OBJECT);
while (head) {
SordIter* f = sord_search(model, head, uris->rdf_first, 0, 0);
if (!f) {
break; // Reached end of restrictions list without failure
}
// Check this restriction
const bool good = check_restriction(
model, uris, literal, type, sord_iter_get_node(f, SORD_OBJECT));
sord_iter_free(f);
if (!good) {
sord_iter_free(rs);
return false; // Failed, literal is invalid
}
// Seek to next list node
SordIter* n = sord_search(model, head, uris->rdf_rest, 0, 0);
head = n ? sord_iter_get_node(n, SORD_OBJECT) : NULL;
sord_iter_free(n);
}
sord_iter_free(rs);
SordIter* s = sord_search(model, type, uris->owl_onDatatype, 0, 0);
if (s) {
const SordNode* super = sord_iter_get_node(s, SORD_OBJECT);
const bool good = literal_is_valid(model, uris, literal, super);
sord_iter_free(s);
return good; // Match iff literal also matches supertype
}
return true; // Matches top level type
}
static bool
check_restriction(SordModel* model,
const URIs* uris,
const SordNode* literal,
const SordNode* type,
const SordNode* restriction)
{
size_t len = 0;
const char* str = (const char*)sord_node_get_string_counted(literal, &len);
++n_restrictions;
// Check xsd:pattern
SordIter* p = sord_search(model, restriction, uris->xsd_pattern, 0, 0);
if (p) {
const SordNode* pat = sord_iter_get_node(p, SORD_OBJECT);
const bool good = regexp_match(sord_node_get_string(pat), str);
if (!good) {
fprintf(stderr, "`%s' does not match <%s> pattern `%s'\n",
sord_node_get_string(literal),
sord_node_get_string(type),
sord_node_get_string(pat));
}
sord_iter_free(p);
return good;
}
/* We'll do some comparison tricks for xsd:decimal types, where
lexicographical comparison would be incorrect. Note that if the
literal's type is a descendant of xsd:decimal, we'll end up checking it
against the xsd:decimal pattern so there's no need to validate digits
here. At worst we'll get a false positive but it will fail later. */
const bool is_decimal = is_descendant_of(
model, uris, type, uris->xsd_decimal, uris->owl_onDatatype);
// Check xsd:minInclusive
SordIter* l = sord_search(model, restriction, uris->xsd_minInclusive, 0, 0);
if (l) {
const SordNode* lower = sord_iter_get_node(l, SORD_OBJECT);
size_t lower_len = 0;
const char* lower_str = (const char*)sord_node_get_string_counted(lower, &lower_len);
bool good = false;
if (!is_decimal || len == lower_len) {
// Not decimal, or equal lengths, strcmp
good = (strcmp(str, lower_str) >= 0);
} else {
// Decimal with different length, only good if longer than the min
good = (len > lower_len);
}
if (!good) {
fprintf(stderr, "`%s' is not >= <%s> minimum `%s'\n",
sord_node_get_string(literal),
sord_node_get_string(type),
sord_node_get_string(lower));
}
sord_iter_free(l);
return good;
}
// Check xsd:maxInclusive
SordIter* u = sord_search(model, restriction, uris->xsd_maxInclusive, 0, 0);
if (u) {
const SordNode* upper = sord_iter_get_node(u, SORD_OBJECT);
size_t upper_len = 0;
const char* upper_str = (const char*)sord_node_get_string_counted(upper, &upper_len);
bool good = false;
if (!is_decimal || len == upper_len) {
// Not decimal, or equal lengths, strcmp
good = (strcmp(str, upper_str) <= 0);
} else {
// Decimal with different length, only good if shorter than the max
good = (len < upper_len);
}
if (!good) {
fprintf(stderr, "`%s' is not <= <%s> maximum `%s'\n",
sord_node_get_string(literal),
sord_node_get_string(type),
sord_node_get_string(upper));
}
sord_iter_free(u);
return good;
}
--n_restrictions;
return true; // Unknown restriction, be quietly tolerant
}
static LilvState*
new_state_from_model(LilvWorld* world,
LV2_URID_Map* map,
SordModel* model,
const SordNode* node,
const char* dir)
{
LilvState* const state = (LilvState*)malloc(sizeof(LilvState));
memset(state, '\0', sizeof(LilvState));
state->dir = lilv_strdup(dir);
state->atom_Path = map->map(map->handle, LV2_ATOM__Path);
// Get the plugin URI this state applies to
SordIter* i = sord_search(model, node, world->uris.lv2_appliesTo, 0, 0);
if (i) {
const SordNode* object = sord_iter_get_node(i, SORD_OBJECT);
const SordNode* graph = sord_iter_get_node(i, SORD_GRAPH);
state->plugin_uri = lilv_node_new_from_node(world, object);
if (!state->dir && graph) {
state->dir = lilv_strdup((const char*)sord_node_get_string(graph));
}
sord_iter_free(i);
} else if (sord_ask(model,
node,
world->uris.rdf_a,
world->uris.lv2_Plugin, 0)) {
// Loading plugin description as state (default state)
state->plugin_uri = lilv_node_new_from_node(world, node);
} else {
LILV_ERRORF("State %s missing lv2:appliesTo property\n",
sord_node_get_string(node));
}
// Get the state label
i = sord_search(model, node, world->uris.rdfs_label, NULL, NULL);
if (i) {
const SordNode* object = sord_iter_get_node(i, SORD_OBJECT);
const SordNode* graph = sord_iter_get_node(i, SORD_GRAPH);
state->label = lilv_strdup((const char*)sord_node_get_string(object));
if (!state->dir) {
state->dir = lilv_strdup((const char*)sord_node_get_string(graph));
}
sord_iter_free(i);
}
Sratom* sratom = sratom_new(map);
SerdChunk chunk = { NULL, 0 };
LV2_Atom_Forge forge;
lv2_atom_forge_init(&forge, map);
lv2_atom_forge_set_sink(
&forge, sratom_forge_sink, sratom_forge_deref, &chunk);
// Get port values
SordIter* ports = sord_search(model, node, world->uris.lv2_port, 0, 0);
FOREACH_MATCH(ports) {
const SordNode* port = sord_iter_get_node(ports, SORD_OBJECT);
SordNode* label = sord_get(model, port, world->uris.rdfs_label, 0, 0);
SordNode* symbol = sord_get(model, port, world->uris.lv2_symbol, 0, 0);
SordNode* value = sord_get(model, port, world->uris.pset_value, 0, 0);
if (!value) {
value = sord_get(model, port, world->uris.lv2_default, 0, 0);
}
if (!symbol) {
LILV_ERRORF("State `%s' port missing symbol.\n",
sord_node_get_string(node));
} else if (value) {
chunk.len = 0;
sratom_read(sratom, &forge, world->world, model, value);
LV2_Atom* atom = (LV2_Atom*)chunk.buf;
append_port_value(state,
(const char*)sord_node_get_string(symbol),
LV2_ATOM_BODY(atom), atom->size, atom->type);
if (label) {
lilv_state_set_label(state,
(const char*)sord_node_get_string(label));
}
}
sord_node_free(world->world, value);
sord_node_free(world->world, symbol);
sord_node_free(world->world, label);
}
sord_iter_free(ports);
// Get properties
SordNode* statep = sord_new_uri(world->world, USTR(LV2_STATE__state));
SordNode* state_node = sord_get(model, node, statep, NULL, NULL);
if (state_node) {
SordIter* props = sord_search(model, state_node, 0, 0, 0);
FOREACH_MATCH(props) {
const SordNode* p = sord_iter_get_node(props, SORD_PREDICATE);
const SordNode* o = sord_iter_get_node(props, SORD_OBJECT);
chunk.len = 0;
lv2_atom_forge_set_sink(
&forge, sratom_forge_sink, sratom_forge_deref, &chunk);
sratom_read(sratom, &forge, world->world, model, o);
LV2_Atom* atom = (LV2_Atom*)chunk.buf;
uint32_t flags = LV2_STATE_IS_POD|LV2_STATE_IS_PORTABLE;
Property prop = { NULL, 0, 0, 0, flags };
prop.key = map->map(map->handle, (const char*)sord_node_get_string(p));
prop.type = atom->type;
prop.size = atom->size;
prop.value = malloc(atom->size);
memcpy(prop.value, LV2_ATOM_BODY(atom), atom->size);
if (atom->type == forge.Path) {
prop.flags = LV2_STATE_IS_PORTABLE;
}
if (prop.value) {
state->props = (Property*)realloc(
state->props, (++state->num_props) * sizeof(Property));
state->props[state->num_props - 1] = prop;
}
}
sord_iter_free(props);
}
sord_node_free(world->world, state_node);
sord_node_free(world->world, statep);
free((void*)chunk.buf);
sratom_free(sratom);
qsort(state->props, state->num_props, sizeof(Property), property_cmp);
qsort(state->values, state->num_values, sizeof(PortValue), value_cmp);
return state;
}