LILV_API char* lilv_state_to_string(LilvWorld* world, LV2_URID_Map* map, LV2_URID_Unmap* unmap, const LilvState* state, const char* uri, const char* base_uri) { if (!uri) { LILV_ERROR("Attempt to serialise state with no URI\n"); return NULL; } SerdChunk chunk = { NULL, 0 }; SerdEnv* env = NULL; SerdNode base = serd_node_from_string(SERD_URI, USTR(base_uri)); SerdWriter* writer = ttl_writer(serd_chunk_sink, &chunk, &base, &env); lilv_state_write(world, map, unmap, state, writer, uri, NULL); serd_writer_free(writer); serd_env_free(env); return (char*)serd_chunk_sink_finish(&chunk); }
SERD_API uint8_t* serd_file_uri_parse(const uint8_t* uri, uint8_t** hostname) { const uint8_t* path = uri; if (hostname) { *hostname = NULL; } if (!strncmp((const char*)uri, "file://", 7)) { const uint8_t* auth = uri + 7; if (*auth == '/') { // No hostname path = auth; } else { // Has hostname if (!(path = (const uint8_t*)strchr((const char*)auth, '/'))) { return NULL; } if (hostname) { *hostname = (uint8_t*)calloc(1, path - auth + 1); memcpy(*hostname, auth, path - auth); } } } if (is_windows_path(path + 1)) { ++path; } SerdChunk chunk = { NULL, 0 }; for (const uint8_t* s = path; *s; ++s) { if (*s == '%') { if (*(s + 1) == '%') { serd_chunk_sink("%", 1, &chunk); ++s; } else if (is_digit(*(s + 1)) && is_digit(*(s + 2))) { const uint8_t code[3] = { *(s + 1), *(s + 2), 0 }; uint32_t num; sscanf((const char*)code, "%X", &num); const uint8_t c = num; serd_chunk_sink(&c, 1, &chunk); s += 2; } else { s += 2; // Junk escape, ignore } } else { serd_chunk_sink(s, 1, &chunk); } } return serd_chunk_sink_finish(&chunk); }
SERD_API SerdNode serd_node_new_file_uri(const uint8_t* path, const uint8_t* hostname, SerdURI* out, bool escape) { const size_t path_len = strlen((const char*)path); const size_t hostname_len = hostname ? strlen((const char*)hostname) : 0; const bool evil = is_windows_path(path); size_t uri_len = 0; uint8_t* uri = NULL; if (path[0] == '/' || is_windows_path(path)) { uri_len = strlen("file://") + hostname_len + evil; uri = (uint8_t*)malloc(uri_len + 1); snprintf((char*)uri, uri_len + 1, "file://%s%s", hostname ? (const char*)hostname : "", evil ? "/" : ""); } SerdChunk chunk = { uri, uri_len }; for (size_t i = 0; i < path_len; ++i) { if (evil && path[i] == '\\') { serd_chunk_sink("/", 1, &chunk); } else if (path[i] == '%') { serd_chunk_sink("%%", 2, &chunk); } else if (!escape || is_uri_path_char(path[i])) { serd_chunk_sink(path + i, 1, &chunk); } else { char escape_str[4] = { '%', 0, 0, 0 }; snprintf(escape_str + 1, sizeof(escape_str) - 1, "%X", path[i]); serd_chunk_sink(escape_str, 3, &chunk); } } serd_chunk_sink_finish(&chunk); if (out) { serd_uri_parse(chunk.buf, out); } return serd_node_from_string(SERD_URI, chunk.buf); }
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; }