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Diffstat (limited to 'src/sordi.c')
| -rw-r--r-- | src/sordi.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/sordi.c b/src/sordi.c new file mode 100644 index 0000000..8b5a213 --- /dev/null +++ b/src/sordi.c @@ -0,0 +1,166 @@ +/* Sord, a lightweight RDF syntax library. + * Copyright 2011 David Robillard <d@drobilla.net> + * + * Sord is free software: you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * Sord is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + * License for details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +#include "serd/serd.h" +#include "sord/sord.h" +#include "sord-config.h" + +typedef struct { + SerdWriter writer; + SerdEnv env; + SerdNode base_uri_node; + SerdURI base_uri; + Sord sord; +} State; + +int +print_version() +{ + printf("sordi " SORD_VERSION " <http://drobilla.net/software/serd>\n"); + printf("Copyright (C) 2011 David Robillard <http://drobilla.net>.\n" + "\nLicense: GNU LGPL version 3 or later " + "<http://gnu.org/licenses/lgpl.html>.\n" + "This is free software; you are free to change and redistribute it." + "\nThere is NO WARRANTY, to the extent permitted by law.\n"); + return 0; +} + +int +print_usage(const char* name, bool error) +{ + FILE* const os = error ? stderr : stdout; + fprintf(os, "Usage: %s [OPTION]... INPUT [BASE_URI]\n", name); + fprintf(os, "Load and re-serialise RDF syntax.\n\n"); + fprintf(os, " -h Display this help and exit\n"); + fprintf(os, " -o SYNTAX Output syntax (`turtle' or `ntriples')\n"); + fprintf(os, " -v Display version information and exit\n"); + return error ? 1 : 0; +} + +static size_t +file_sink(const void* buf, size_t len, void* stream) +{ + FILE* file = (FILE*)stream; + return fwrite(buf, 1, len, file); +} + +static inline SerdNode +serd_node_from_sord_node(const SordNode n) +{ + size_t n_bytes = 0; + const char* buf = sord_node_get_string_counted(n, &n_bytes); + SerdNode sn = { SERD_NOTHING, n_bytes, n_bytes - 1, (const uint8_t*)buf }; + // FIXME: UTF-8 + switch (sord_node_get_type(n)) { + case SORD_URI: + sn.type = SERD_URI; + break; + case SORD_BLANK: + sn.type = SERD_BLANK_ID; + break; + case SORD_LITERAL: + sn.type = SERD_LITERAL; + break; + } + return sn; +} + +int +main(int argc, char** argv) +{ + if (argc < 2) { + return print_usage(argv[0], true); + } + + SerdSyntax output_syntax = SERD_NTRIPLES; + int a = 1; + for (; a < argc && argv[a][0] == '-'; ++a) { + if (argv[a][1] == 'h') { + return print_usage(argv[0], false); + } else if (argv[a][1] == 'v') { + return print_version(); + } else if (argv[a][1] == 'o') { + if (++a == argc) { + fprintf(stderr, "missing value for -o\n"); + return 1; + } + if (!strcmp(argv[a], "turtle")) { + output_syntax = SERD_TURTLE; + } else if (!strcmp(argv[a], "ntriples")) { + output_syntax = SERD_NTRIPLES; + } else { + fprintf(stderr, "unknown output format `%s'\n", argv[a]); + return 1; + } + } else { + fprintf(stderr, "unknown option `%s'\n", argv[a]); + return print_usage(argv[0], true); + } + } + + const uint8_t* input = (const uint8_t*)argv[a++]; + + Sord sord = sord_new(); + sord_open(sord); + + bool success = sord_read_file(sord, input); + + printf("loaded %u statements\n", sord_num_nodes(sord)); + + SerdURI base_uri; + if (!serd_uri_parse(input, &base_uri)) { + fprintf(stderr, "bad input URI `%s'\n", input); + return 1; + } + + SerdEnv env = serd_env_new(); + SerdWriter writer = serd_writer_new(SERD_TURTLE, SERD_STYLE_ABBREVIATED, + env, &base_uri, file_sink, stdout); + + // Query + SordTuple pat = { 0, 0, 0, 0 }; + SordIter iter = sord_find(sord, pat); + for (; !sord_iter_is_end(iter); sord_iter_increment(iter)) { + SordTuple tup; + sord_iter_get(iter, tup); + SordNode s, p, o; + sord_tuple_load(sord, tup, &s, &p, &o); + /*printf("%s %s %s .\n", + sord_node_get_string(s), + sord_node_get_string(p), + sord_node_get_string(o));*/ + + SerdNode ss = serd_node_from_sord_node(s); + SerdNode sp = serd_node_from_sord_node(p); + SerdNode so = serd_node_from_sord_node(o); + serd_writer_write_statement( + writer, NULL, &ss, &sp, &so, NULL, NULL); + } + + serd_writer_finish(writer); + serd_writer_free(writer); + + serd_env_free(env); + + sord_free(sord); + + return success ? 0 : 1; +} |