SERD_API
SerdStatus
serd_writer_end_anon(SerdWriter* writer,
const SerdNode* node)
{
if (writer->syntax == SERD_NTRIPLES) {
return SERD_SUCCESS;
}
if (serd_stack_is_empty(&writer->anon_stack)) {
fprintf(stderr, "Unexpected end of anonymous node\n");
return SERD_ERR_UNKNOWN;
}
assert(writer->indent > 0);
--writer->indent;
serd_writer_write_delim(writer, '\n');
writer->sink("]", 1, writer->stream);
reset_context(writer);
writer->context = *anon_stack_top(writer);
serd_stack_pop(&writer->anon_stack, sizeof(WriteContext));
const bool is_subject = serd_node_equals(node, &writer->context.subject);
if (is_subject) {
serd_node_free(&writer->context.predicate);
writer->context.subject = serd_node_copy(node);
writer->context.predicate = SERD_NODE_NULL;
}
return SERD_SUCCESS;
}
SERD_API
void
serd_reader_set_default_graph(SerdReader* reader,
const SerdNode* graph)
{
serd_node_free(&reader->default_graph);
reader->default_graph = serd_node_copy(graph);
}
static void
serd_env_add(SerdEnv* env,
const SerdNode* name,
const SerdNode* uri)
{
SerdPrefix* const prefix = serd_env_find(env, name->buf, name->n_bytes);
if (prefix) {
SerdNode old_prefix_uri = prefix->uri;
prefix->uri = serd_node_copy(uri);
serd_node_free(&old_prefix_uri);
} else {
env->prefixes = (SerdPrefix*)realloc(
env->prefixes, (++env->n_prefixes) * sizeof(SerdPrefix));
env->prefixes[env->n_prefixes - 1].name = serd_node_copy(name);
env->prefixes[env->n_prefixes - 1].uri = serd_node_copy(uri);
}
}
SERD_API
SerdStatus
serd_writer_set_root_uri(SerdWriter* writer,
const SerdNode* uri)
{
serd_node_free(&writer->root_node);
if (uri && uri->buf) {
writer->root_node = serd_node_copy(uri);
serd_uri_parse(uri->buf, &writer->root_uri);
} else {
writer->root_node = SERD_NODE_NULL;
writer->root_uri = SERD_URI_NULL;
}
return SERD_SUCCESS;
}
int
main(void)
{
#define MAX 1000000
#define NUM_TESTS 1000
for (int i = 0; i < NUM_TESTS; ++i) {
double dbl = rand() % MAX;
dbl += (rand() % MAX) / (double)MAX;
if (!test_strtod(dbl, 1 / (double)MAX)) {
return 1;
}
}
const double expt_test_nums[] = {
2.0E18, -5e19, +8e20, 2e+34, -5e-5, 8e0, 9e-0, 2e+0
};
const char* expt_test_strs[] = {
"02e18", "-5e019", "+8e20", "2E+34", "-5E-5", "8E0", "9e-0", " 2e+0"
};
for (unsigned i = 0; i < sizeof(expt_test_nums) / sizeof(double); ++i) {
const double num = serd_strtod(expt_test_strs[i], NULL);
const double delta = fabs(num - expt_test_nums[i]);
if (delta > DBL_EPSILON) {
return failure("Parsed `%s' %lf != %lf (delta %lf)\n",
expt_test_strs[i], num, expt_test_nums[i], delta);
}
}
// Test serd_node_new_decimal
const double dbl_test_nums[] = {
0.0, 9.0, 10.0, .01, 2.05, -16.00001, 5.000000005, 0.0000000001, NAN, INFINITY
};
const char* dbl_test_strs[] = {
"0.0", "9.0", "10.0", "0.01", "2.05", "-16.00001", "5.00000001", "0.0", NULL, NULL
};
for (unsigned i = 0; i < sizeof(dbl_test_nums) / sizeof(double); ++i) {
SerdNode node = serd_node_new_decimal(dbl_test_nums[i], 8);
const bool pass = (node.buf && dbl_test_strs[i])
? !strcmp((const char*)node.buf, (const char*)dbl_test_strs[i])
: ((const char*)node.buf == dbl_test_strs[i]);
if (!pass) {
return failure("Serialised `%s' != %s\n",
node.buf, dbl_test_strs[i]);
}
const size_t len = node.buf ? strlen((const char*)node.buf) : 0;
if (node.n_bytes != len || node.n_chars != len) {
return failure("Length %zu,%zu != %zu\n",
node.n_bytes, node.n_chars, len);
}
serd_node_free(&node);
}
// Test serd_node_new_integer
const long int_test_nums[] = {
0, -0, -23, 23, -12340, 1000, -1000
};
const char* int_test_strs[] = {
"0", "0", "-23", "23", "-12340", "1000", "-1000"
};
for (unsigned i = 0; i < sizeof(int_test_nums) / sizeof(double); ++i) {
SerdNode node = serd_node_new_integer(int_test_nums[i]);
if (strcmp((const char*)node.buf, (const char*)int_test_strs[i])) {
return failure("Serialised `%s' != %s\n",
node.buf, int_test_strs[i]);
}
const size_t len = strlen((const char*)node.buf);
if (node.n_bytes != len || node.n_chars != len) {
return failure("Length %zu,%zu != %zu\n",
node.n_bytes, node.n_chars, len);
}
serd_node_free(&node);
}
// Test serd_node_new_blob
for (size_t size = 0; size < 256; ++size) {
uint8_t* data = (uint8_t*)malloc(size);
for (size_t i = 0; i < size; ++i) {
data[i] = (uint8_t)(rand() % 256);
}
SerdNode blob = serd_node_new_blob(data, size, size % 5);
if (blob.n_bytes != blob.n_chars) {
return failure("Blob %zu bytes != %zu chars\n",
blob.n_bytes, blob.n_chars);
}
size_t out_size;
uint8_t* out = (uint8_t*)serd_base64_decode(
blob.buf, blob.n_bytes, &out_size);
if (out_size != size) {
return failure("Blob size %zu != %zu\n", out_size, size);
}
for (size_t i = 0; i < size; ++i) {
if (out[i] != data[i]) {
return failure("Corrupt blob at byte %zu\n", i);
}
}
serd_node_free(&blob);
free(out);
free(data);
}
// Test serd_strlen
const uint8_t str[] = { '"', '5', 0xE2, 0x82, 0xAC, '"', '\n', 0 };
size_t n_bytes;
SerdNodeFlags flags;
size_t len = serd_strlen(str, &n_bytes, &flags);
if (len != 5 || n_bytes != 7
|| flags != (SERD_HAS_QUOTE|SERD_HAS_NEWLINE)) {
return failure("Bad serd_strlen(%s) len=%zu n_bytes=%zu flags=%u\n",
str, len, n_bytes, flags);
}
len = serd_strlen(str, NULL, &flags);
if (len != 5) {
return failure("Bad serd_strlen(%s) len=%zu flags=%u\n",
str, len, flags);
}
// Test serd_strerror
const uint8_t* msg = NULL;
if (strcmp((const char*)(msg = serd_strerror(SERD_SUCCESS)), "Success")) {
return failure("Bad message `%s' for SERD_SUCCESS\n", msg);
}
for (int i = SERD_FAILURE; i <= SERD_ERR_INTERNAL; ++i) {
msg = serd_strerror((SerdStatus)i);
if (!strcmp((const char*)msg, "Success")) {
return failure("Bad message `%s' for (SerdStatus)%d\n", msg, i);
}
}
msg = serd_strerror((SerdStatus)-1);
// Test serd_uri_to_path
const uint8_t* uri = (const uint8_t*)"file:///home/user/foo.ttl";
if (strcmp((const char*)serd_uri_to_path(uri), "/home/user/foo.ttl")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"file://localhost/home/user/foo.ttl";
if (strcmp((const char*)serd_uri_to_path(uri), "/home/user/foo.ttl")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"file:illegal/file/uri";
if (serd_uri_to_path(uri)) {
return failure("Converted invalid URI `%s' to path `%s'\n",
uri, serd_uri_to_path(uri));
}
uri = (const uint8_t*)"file:///c:/awful/system";
if (strcmp((const char*)serd_uri_to_path(uri), "c:/awful/system")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"file:///c:awful/system";
if (strcmp((const char*)serd_uri_to_path(uri), "/c:awful/system")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"file:///0/1";
if (strcmp((const char*)serd_uri_to_path(uri), "/0/1")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"C:\\Windows\\Sucks";
if (strcmp((const char*)serd_uri_to_path(uri), "C:\\Windows\\Sucks")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
uri = (const uint8_t*)"C|/Windows/Sucks";
if (strcmp((const char*)serd_uri_to_path(uri), "C|/Windows/Sucks")) {
return failure("Bad path %s for %s\n", serd_uri_to_path(uri), uri);
}
// Test serd_node_new_file_uri and serd_file_uri_parse
SerdURI furi;
const uint8_t* path_str = USTR("C:/My 100%");
SerdNode file_node = serd_node_new_file_uri(path_str, 0, &furi, true);
uint8_t* hostname = NULL;
uint8_t* out_path = serd_file_uri_parse(file_node.buf, &hostname);
if (strcmp((const char*)file_node.buf, "file:///C:/My%20100%%")) {
return failure("Bad URI %s\n", file_node.buf);
} else if (hostname) {
return failure("hostname `%s' shouldn't exist\n", hostname);
} else if (strcmp((const char*)path_str, (const char*)out_path)) {
return failure("path=>URI=>path failure %s => %s => %s\n",
path_str, file_node.buf, out_path);
}
free(out_path);
serd_node_free(&file_node);
path_str = USTR("C:\\Pointless Space");
file_node = serd_node_new_file_uri(path_str, USTR("pwned"), 0, true);
hostname = NULL;
out_path = serd_file_uri_parse(file_node.buf, &hostname);
if (strcmp((const char*)file_node.buf, "file://pwned/C:/Pointless%20Space")) {
return failure("Bad URI %s\n", file_node.buf);
} else if (!hostname || strcmp((const char*)hostname, "pwned")) {
return failure("Bad hostname `%s'\n", hostname);
} else if (strcmp((const char*)out_path, "C:/Pointless Space")) {
return failure("path=>URI=>path failure %s => %s => %s\n",
path_str, file_node.buf, out_path);
}
free(hostname);
free(out_path);
serd_node_free(&file_node);
path_str = USTR("/foo/bar");
file_node = serd_node_new_file_uri(path_str, 0, 0, true);
hostname = NULL;
out_path = serd_file_uri_parse(file_node.buf, &hostname);
if (strcmp((const char*)file_node.buf, "file:///foo/bar")) {
return failure("Bad URI %s\n", file_node.buf);
} else if (hostname) {
return failure("hostname `%s' shouldn't exist\n", hostname);
} else if (strcmp((const char*)path_str, (const char*)out_path)) {
return failure("path=>URI=>path failure %s => %s => %s\n",
path_str, file_node.buf, out_path);
}
free(out_path);
serd_node_free(&file_node);
path_str = USTR("/foo/bar");
file_node = serd_node_new_file_uri(path_str, USTR("localhost"), 0, true);
out_path = serd_file_uri_parse(file_node.buf, &hostname);
if (strcmp((const char*)file_node.buf, "file://localhost/foo/bar")) {
return failure("Bad URI %s\n", file_node.buf);
} else if (strcmp((const char*)hostname, "localhost")) {
return failure("incorrect hostname `%s'\n", hostname);
} else if (strcmp((const char*)path_str, (const char*)out_path)) {
return failure("path=>URI=>path failure %s => %s => %s\n",
path_str, file_node.buf, out_path);
}
free(hostname);
free(out_path);
serd_node_free(&file_node);
path_str = USTR("a/relative path");
file_node = serd_node_new_file_uri(path_str, 0, 0, false);
out_path = serd_file_uri_parse(file_node.buf, &hostname);
if (strcmp((const char*)file_node.buf, "a/relative path")) {
return failure("Bad URI %s\n", file_node.buf);
} else if (hostname) {
return failure("hostname `%s' shouldn't exist\n", hostname);
} else if (strcmp((const char*)path_str, (const char*)out_path)) {
return failure("path=>URI=>path failure %s => %s => %s\n",
path_str, file_node.buf, out_path);
}
free(hostname);
free(out_path);
serd_node_free(&file_node);
if (serd_file_uri_parse(USTR("file://invalid"), NULL)) {
return failure("successfully parsed bogus URI <file://invalid>\n");
}
out_path = serd_file_uri_parse(USTR("file://host/foo/%XYbar"), NULL);
if (strcmp((const char*)out_path, "/foo/bar")) {
return failure("bad tolerance of junk escape: `%s'\n", out_path);
}
free(out_path);
out_path = serd_file_uri_parse(USTR("file://host/foo/%0Abar"), NULL);
if (strcmp((const char*)out_path, "/foo/bar")) {
return failure("bad tolerance of junk escape: `%s'\n", out_path);
}
free(out_path);
// Test serd_node_equals
const uint8_t replacement_char_str[] = { 0xEF, 0xBF, 0xBD, 0 };
SerdNode lhs = serd_node_from_string(SERD_LITERAL, replacement_char_str);
SerdNode rhs = serd_node_from_string(SERD_LITERAL, USTR("123"));
if (serd_node_equals(&lhs, &rhs)) {
return failure("%s == %s\n", lhs.buf, rhs.buf);
}
SerdNode qnode = serd_node_from_string(SERD_CURIE, USTR("foo:bar"));
if (serd_node_equals(&lhs, &qnode)) {
return failure("%s == %s\n", lhs.buf, qnode.buf);
}
if (!serd_node_equals(&lhs, &lhs)) {
return failure("%s != %s\n", lhs.buf, lhs.buf);
}
SerdNode null_copy = serd_node_copy(&SERD_NODE_NULL);
if (!serd_node_equals(&SERD_NODE_NULL, &null_copy)) {
return failure("copy of null node != null node\n");
}
// Test serd_node_from_string
SerdNode node = serd_node_from_string(SERD_LITERAL, (const uint8_t*)"hello\"");
if (node.n_bytes != 6 || node.n_chars != 6 || node.flags != SERD_HAS_QUOTE
|| strcmp((const char*)node.buf, "hello\"")) {
return failure("Bad node %s %zu %zu %d %d\n",
node.buf, node.n_bytes, node.n_chars, node.flags, node.type);
}
node = serd_node_from_string(SERD_URI, NULL);
if (!serd_node_equals(&node, &SERD_NODE_NULL)) {
return failure("Creating node from NULL string failed\n");
}
// Test serd_node_new_uri_from_string
SerdURI base_uri;
SerdNode base = serd_node_new_uri_from_string(USTR("http://example.org/"),
NULL, &base_uri);
SerdNode nil = serd_node_new_uri_from_string(NULL, &base_uri, NULL);
SerdNode nil2 = serd_node_new_uri_from_string(USTR(""), &base_uri, NULL);
if (nil.type != SERD_URI || strcmp((const char*)nil.buf, (const char*)base.buf) ||
nil2.type != SERD_URI || strcmp((const char*)nil2.buf, (const char*)base.buf)) {
return failure("URI %s != base %s\n", nil.buf, base.buf);
}
serd_node_free(&base);
serd_node_free(&nil);
serd_node_free(&nil2);
// Test SerdEnv
SerdNode u = serd_node_from_string(SERD_URI, USTR("http://example.org/foo"));
SerdNode b = serd_node_from_string(SERD_CURIE, USTR("invalid"));
SerdNode c = serd_node_from_string(SERD_CURIE, USTR("eg.2:b"));
SerdEnv* env = serd_env_new(NULL);
serd_env_set_prefix_from_strings(env, USTR("eg.2"), USTR("http://example.org/"));
if (!serd_env_set_base_uri(env, &node)) {
return failure("Set base URI to %s\n", node.buf);
}
if (!serd_node_equals(serd_env_get_base_uri(env, NULL), &node)) {
return failure("Base URI mismatch\n");
}
SerdChunk prefix, suffix;
if (!serd_env_expand(env, &b, &prefix, &suffix)) {
return failure("Expanded invalid curie %s\n", b.buf);
}
SerdNode xnode = serd_env_expand_node(env, &node);
if (!serd_node_equals(&xnode, &SERD_NODE_NULL)) {
return failure("Expanded %s to %s\n", c.buf, xnode.buf);
}
SerdNode xu = serd_env_expand_node(env, &u);
if (strcmp((const char*)xu.buf, "http://example.org/foo")) {
return failure("Expanded %s to %s\n", c.buf, xu.buf);
}
serd_node_free(&xu);
SerdNode badpre = serd_node_from_string(SERD_CURIE, USTR("hm:what"));
SerdNode xbadpre = serd_env_expand_node(env, &badpre);
if (!serd_node_equals(&xbadpre, &SERD_NODE_NULL)) {
return failure("Expanded invalid curie %s\n", badpre.buf);
}
SerdNode xc = serd_env_expand_node(env, &c);
if (strcmp((const char*)xc.buf, "http://example.org/b")) {
return failure("Expanded %s to %s\n", c.buf, xc.buf);
}
serd_node_free(&xc);
if (!serd_env_set_prefix(env, &SERD_NODE_NULL, &SERD_NODE_NULL)) {
return failure("Set NULL prefix\n");
}
const SerdNode lit = serd_node_from_string(SERD_LITERAL, USTR("hello"));
if (!serd_env_set_prefix(env, &b, &lit)) {
return failure("Set prefix to literal\n");
}
int n_prefixes = 0;
serd_env_set_prefix_from_strings(env, USTR("eg.2"), USTR("http://example.org/"));
serd_env_foreach(env, count_prefixes, &n_prefixes);
if (n_prefixes != 1) {
return failure("Bad prefix count %d\n", n_prefixes);
}
SerdNode shorter_uri = serd_node_from_string(SERD_URI, USTR("urn:foo"));
SerdNode prefix_name;
if (serd_env_qualify(env, &shorter_uri, &prefix_name, &suffix)) {
return failure("Qualified %s\n", shorter_uri.buf);
}
// Test SerdReader and SerdWriter
const char* path = "serd_test.ttl";
FILE* fd = fopen(path, "w");
if (!fd) {
return failure("Failed to open file %s\n", path);
}
SerdWriter* writer = serd_writer_new(
SERD_TURTLE, (SerdStyle)0, env, NULL, serd_file_sink, fd);
if (!writer) {
return failure("Failed to create writer\n");
}
serd_writer_chop_blank_prefix(writer, USTR("tmp"));
serd_writer_chop_blank_prefix(writer, NULL);
if (!serd_writer_set_base_uri(writer, &lit)) {
return failure("Set base URI to %s\n", lit.buf);
}
if (!serd_writer_set_prefix(writer, &lit, &lit)) {
return failure("Set prefix %s to %s\n", lit.buf, lit.buf);
}
if (!serd_writer_end_anon(writer, NULL)) {
return failure("Ended non-existent anonymous node\n");
}
if (serd_writer_get_env(writer) != env) {
return failure("Writer has incorrect env\n");
}
uint8_t buf[] = { 0x80, 0, 0, 0, 0 };
SerdNode s = serd_node_from_string(SERD_URI, USTR(""));
SerdNode p = serd_node_from_string(SERD_URI, USTR("http://example.org/pred"));
SerdNode o = serd_node_from_string(SERD_LITERAL, buf);
// Write 3 invalid statements (should write nothing)
const SerdNode* junk[][5] = { { &s, &p, NULL, NULL, NULL },
{ &s, NULL, &o, NULL, NULL },
{ NULL, &p, &o, NULL, NULL },
{ &s, &p, &SERD_NODE_NULL, NULL, NULL },
{ &s, &SERD_NODE_NULL, &o, NULL, NULL },
{ &SERD_NODE_NULL, &p, &o, NULL, NULL },
{ &s, &o, &o, NULL, NULL },
{ &o, &p, &o, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL } };
for (unsigned i = 0; i < sizeof(junk) / (sizeof(SerdNode*) * 5); ++i) {
if (!serd_writer_write_statement(
writer, 0, NULL,
junk[i][0], junk[i][1], junk[i][2], junk[i][3], junk[i][4])) {
return failure("Successfully wrote junk statement %d\n", i);
}
}
const SerdNode t = serd_node_from_string(SERD_URI, USTR("urn:Type"));
const SerdNode l = serd_node_from_string(SERD_LITERAL, USTR("en"));
const SerdNode* good[][5] = { { &s, &p, &o, NULL, NULL },
{ &s, &p, &o, &SERD_NODE_NULL, &SERD_NODE_NULL },
{ &s, &p, &o, &t, NULL },
{ &s, &p, &o, NULL, &l },
{ &s, &p, &o, &t, &l },
{ &s, &p, &o, &t, &SERD_NODE_NULL },
{ &s, &p, &o, &SERD_NODE_NULL, &l },
{ &s, &p, &o, NULL, &SERD_NODE_NULL },
{ &s, &p, &o, &SERD_NODE_NULL, NULL },
{ &s, &p, &o, &SERD_NODE_NULL, NULL } };
for (unsigned i = 0; i < sizeof(good) / (sizeof(SerdNode*) * 5); ++i) {
if (serd_writer_write_statement(
writer, 0, NULL,
good[i][0], good[i][1], good[i][2], good[i][3], good[i][4])) {
return failure("Failed to write good statement %d\n", i);
}
}
// Write 1 statement with bad UTF-8 (should be replaced)
if (serd_writer_write_statement(writer, 0, NULL,
&s, &p, &o, NULL, NULL)) {
return failure("Failed to write junk UTF-8\n");
}
// Write 1 valid statement
o = serd_node_from_string(SERD_LITERAL, USTR("hello"));
if (serd_writer_write_statement(writer, 0, NULL,
&s, &p, &o, NULL, NULL)) {
return failure("Failed to write valid statement\n");
}
serd_writer_free(writer);
// Test chunk sink
SerdChunk chunk = { NULL, 0 };
writer = serd_writer_new(
SERD_TURTLE, (SerdStyle)0, env, NULL, serd_chunk_sink, &chunk);
o = serd_node_from_string(SERD_URI, USTR("http://example.org/base"));
if (serd_writer_set_base_uri(writer, &o)) {
return failure("Failed to write to chunk sink\n");
}
serd_writer_free(writer);
uint8_t* out = serd_chunk_sink_finish(&chunk);
if (strcmp((const char*)out, "@base <http://example.org/base> .\n")) {
return failure("Incorrect chunk output:\n%s\n", chunk.buf);
}
free(out);
// Rewind and test reader
fseek(fd, 0, SEEK_SET);
ReaderTest* rt = (ReaderTest*)malloc(sizeof(ReaderTest));
rt->n_statements = 0;
rt->graph = NULL;
SerdReader* reader = serd_reader_new(
SERD_TURTLE, rt, free,
NULL, NULL, test_sink, NULL);
if (!reader) {
return failure("Failed to create reader\n");
}
if (serd_reader_get_handle(reader) != rt) {
return failure("Corrupt reader handle\n");
}
SerdNode g = serd_node_from_string(SERD_URI, USTR("http://example.org/"));
serd_reader_set_default_graph(reader, &g);
serd_reader_add_blank_prefix(reader, USTR("tmp"));
serd_reader_add_blank_prefix(reader, NULL);
if (!serd_reader_read_file(reader, USTR("http://notafile"))) {
return failure("Apparently read an http URI\n");
}
if (!serd_reader_read_file(reader, USTR("file:///better/not/exist"))) {
return failure("Apprently read a non-existent file\n");
}
SerdStatus st = serd_reader_read_file(reader, USTR(path));
if (st) {
return failure("Error reading file (%s)\n", serd_strerror(st));
}
if (rt->n_statements != 12) {
return failure("Bad statement count %d\n", rt->n_statements);
} else if (!rt->graph || !rt->graph->buf ||
strcmp((const char*)rt->graph->buf, "http://example.org/")) {
return failure("Bad graph %p\n", rt->graph);
}
if (!serd_reader_read_string(reader, USTR("This isn't Turtle at all."))) {
return failure("Parsed invalid string successfully.\n");
}
serd_reader_free(reader);
fclose(fd);
serd_env_free(env);
printf("Success\n");
return 0;
}
SERD_API
SerdStatus
serd_writer_write_statement(SerdWriter* writer,
SerdStatementFlags flags,
const SerdNode* graph,
const SerdNode* subject,
const SerdNode* predicate,
const SerdNode* object,
const SerdNode* datatype,
const SerdNode* lang)
{
if (!subject || !predicate || !object
|| !subject->buf || !predicate->buf || !object->buf
|| !is_resource(subject) || !is_resource(predicate)) {
return SERD_ERR_BAD_ARG;
}
#define TRY(write_result) \
if (!write_result) { \
return SERD_ERR_UNKNOWN; \
}
switch (writer->syntax) {
case SERD_NTRIPLES:
TRY(write_node(writer, subject, NULL, NULL, FIELD_SUBJECT, flags));
sink(" ", 1, writer);
TRY(write_node(writer, predicate, NULL, NULL, FIELD_PREDICATE, flags));
sink(" ", 1, writer);
TRY(write_node(writer, object, datatype, lang, FIELD_OBJECT, flags));
sink(" .\n", 3, writer);
return SERD_SUCCESS;
default:
break;
}
if ((flags & SERD_LIST_CONT)) {
if (write_list_obj(writer, flags, predicate, object, datatype, lang)) {
// Reached end of list
if (--writer->list_depth == 0 && writer->list_subj.type) {
reset_context(writer, true);
writer->context.subject = writer->list_subj;
writer->list_subj = SERD_NODE_NULL;
}
return SERD_SUCCESS;
}
} else if (serd_node_equals(subject, &writer->context.subject)) {
if (serd_node_equals(predicate, &writer->context.predicate)) {
// Abbreviate S P
if (!(flags & SERD_ANON_O_BEGIN)) {
++writer->indent;
}
write_sep(writer, SEP_END_O);
write_node(writer, object, datatype, lang, FIELD_OBJECT, flags);
if (!(flags & SERD_ANON_O_BEGIN)) {
--writer->indent;
}
} else {
// Abbreviate S
Sep sep = writer->context.predicate.type ? SEP_END_P : SEP_S_P;
write_sep(writer, sep);
write_pred(writer, flags, predicate);
write_node(writer, object, datatype, lang, FIELD_OBJECT, flags);
}
} else {
// No abbreviation
if (writer->context.subject.type) {
assert(writer->indent > 0);
--writer->indent;
if (serd_stack_is_empty(&writer->anon_stack)) {
write_sep(writer, SEP_END_S);
}
} else if (!writer->empty) {
write_sep(writer, SEP_S_P);
}
if (!(flags & SERD_ANON_CONT)) {
write_node(writer, subject, NULL, NULL, FIELD_SUBJECT, flags);
++writer->indent;
write_sep(writer, SEP_S_P);
} else {
++writer->indent;
}
reset_context(writer, true);
copy_node(&writer->context.subject, subject);
if (!(flags & SERD_LIST_S_BEGIN)) {
write_pred(writer, flags, predicate);
}
write_node(writer, object, datatype, lang, FIELD_OBJECT, flags);
}
if (flags & (SERD_ANON_S_BEGIN|SERD_ANON_O_BEGIN)) {
WriteContext* ctx = (WriteContext*)serd_stack_push(
&writer->anon_stack, sizeof(WriteContext));
*ctx = writer->context;
WriteContext new_context = {
serd_node_copy(graph), serd_node_copy(subject), SERD_NODE_NULL };
if ((flags & SERD_ANON_S_BEGIN)) {
new_context.predicate = serd_node_copy(predicate);
}
writer->context = new_context;
} else {
copy_node(&writer->context.graph, graph);
copy_node(&writer->context.subject, subject);
copy_node(&writer->context.predicate, predicate);
}
return SERD_SUCCESS;
}
SERD_API
SerdStatus
serd_writer_write_statement(SerdWriter* writer,
SerdStatementFlags flags,
const SerdNode* graph,
const SerdNode* subject,
const SerdNode* predicate,
const SerdNode* object,
const SerdNode* object_datatype,
const SerdNode* object_lang)
{
assert(subject && predicate && object);
switch (writer->syntax) {
case SERD_NTRIPLES:
write_node(writer, subject, NULL, NULL, FIELD_SUBJECT, flags);
writer->sink(" ", 1, writer->stream);
write_node(writer, predicate, NULL, NULL, FIELD_PREDICATE, flags);
writer->sink(" ", 1, writer->stream);
if (!write_node(writer, object, object_datatype, object_lang,
FIELD_OBJECT, flags)) {
return SERD_ERR_UNKNOWN;
}
writer->sink(" .\n", 3, writer->stream);
return SERD_SUCCESS;
case SERD_TURTLE:
break;
}
if (serd_node_equals(subject, &writer->context.subject)) {
if (serd_node_equals(predicate, &writer->context.predicate)) {
// Abbreviate S P
if ((flags & SERD_ANON_O_BEGIN)) {
writer->sink(" , ", 3, writer->stream); // ] , [
} else {
++writer->indent;
serd_writer_write_delim(writer, ',');
}
write_node(writer, object, object_datatype, object_lang,
FIELD_OBJECT, flags);
if (!(flags & SERD_ANON_O_BEGIN)) {
--writer->indent;
}
} else {
// Abbreviate S
if (writer->context.predicate.buf) {
serd_writer_write_delim(writer, ';');
} else {
serd_writer_write_delim(writer, '\n');
}
write_node(writer, predicate, NULL, NULL, FIELD_PREDICATE, flags);
if (writer->context.predicate.buf)
serd_node_free(&writer->context.predicate);
writer->context.predicate = serd_node_copy(predicate);
writer->sink(" ", 1, writer->stream);
write_node(writer, object, object_datatype, object_lang,
FIELD_OBJECT, flags);
}
} else {
if (writer->context.subject.buf) {
if (writer->indent > 0) {
--writer->indent;
}
if (serd_stack_is_empty(&writer->anon_stack)) {
serd_writer_write_delim(writer, '.');
serd_writer_write_delim(writer, '\n');
}
} else if (!writer->empty) {
serd_writer_write_delim(writer, '\n');
}
if (!(flags & SERD_ANON_CONT)) {
write_node(writer, subject, NULL, NULL, FIELD_SUBJECT, flags);
++writer->indent;
if (!(flags & SERD_ANON_S_BEGIN)) {
serd_writer_write_delim(writer, '\n');
}
} else {
++writer->indent;
}
reset_context(writer);
writer->context.subject = serd_node_copy(subject);
writer->context.predicate = SERD_NODE_NULL;
write_node(writer, predicate, NULL, NULL, FIELD_PREDICATE, flags);
writer->context.predicate = serd_node_copy(predicate);
writer->sink(" ", 1, writer->stream);
write_node(writer, object, object_datatype, object_lang,
FIELD_OBJECT, flags);
}
if (writer->syntax != SERD_NTRIPLES
&& ((flags & SERD_ANON_S_BEGIN) || (flags & SERD_ANON_O_BEGIN))) {
WriteContext* ctx = (WriteContext*)serd_stack_push(
&writer->anon_stack, sizeof(WriteContext));
*ctx = writer->context;
writer->context = WRITE_CONTEXT_NULL; // Prevent deletion...
}
const WriteContext new_context = { serd_node_copy(graph),
serd_node_copy(subject),
serd_node_copy(predicate) };
reset_context(writer); // ... here
writer->context = new_context;
return SERD_SUCCESS;
}