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authorDavid Robillard <d@drobilla.net>2011-05-24 18:54:47 +0000
committerDavid Robillard <d@drobilla.net>2011-05-24 18:54:47 +0000
commitf44b324a36ce7d6238ed58eb67702e6a821deec7 (patch)
tree0e860d4f3b37fc0cee571efa61714fbd56f64928 /src/syntax.c
parent528dd84b43180c859fe581ed6664e8d6b9e5a961 (diff)
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Cleaner serialisation API. Fix partially abbreviated serialisation.
git-svn-id: http://svn.drobilla.net/sord/trunk@131 3d64ff67-21c5-427c-a301-fe4f08042e5a
Diffstat (limited to 'src/syntax.c')
-rw-r--r--src/syntax.c179
1 files changed, 16 insertions, 163 deletions
diff --git a/src/syntax.c b/src/syntax.c
index 58ae1e4..8fd9644 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -32,16 +32,6 @@ typedef struct {
SordModel* sord;
} ReadState;
-static uint8_t*
-copy_string(const uint8_t* str, size_t* n_bytes)
-{
- const size_t len = strlen((const char*)str);
- uint8_t* const ret = malloc(len + 1);
- memcpy(ret, str, len + 1);
- *n_bytes = len + 1;
- return ret;
-}
-
static SerdStatus
event_base(void* handle,
const SerdNode* uri_node)
@@ -102,31 +92,6 @@ event_statement(void* handle,
return SERD_SUCCESS;
}
-static const uint8_t*
-sord_file_uri_to_path(const uint8_t* uri)
-{
- const uint8_t* filename = NULL;
- if (serd_uri_string_has_scheme(uri)) {
- // Absolute URI, ensure it a file and chop scheme
- if (strncmp((const char*)uri, "file:", 5)) {
- fprintf(stderr, "Unsupported URI scheme `%s'\n", uri);
- return NULL;
-#ifdef __WIN32__
- } else if (!strncmp((const char*)uri, "file:///", 8)) {
- filename = uri + 8;
-#else
- } else if (!strncmp((const char*)uri, "file://", 7)) {
- filename = uri + 7;
-#endif
- } else {
- filename = uri + 5;
- }
- } else {
- filename = uri;
- }
- return filename;
-}
-
SORD_API
SerdReader*
sord_new_reader(SordModel* model,
@@ -147,87 +112,9 @@ sord_new_reader(SordModel* model,
return reader;
}
-static SerdWriter*
-make_writer(SerdEnv* env,
- SerdSyntax syntax,
- const uint8_t* base_uri_str_in,
- SerdSink sink,
- void* stream)
-{
- size_t base_uri_n_bytes = 0;
- uint8_t* base_uri_str = copy_string(base_uri_str_in, &base_uri_n_bytes);
- SerdURI base_uri;
- if (serd_uri_parse(base_uri_str, &base_uri)) {
- fprintf(stderr, "Invalid base URI <%s>\n", base_uri_str);
- }
-
- SerdWriter* writer = serd_writer_new(
- syntax,
- SERD_STYLE_ABBREVIATED|SERD_STYLE_CURIED,
- env,
- &base_uri,
- sink,
- stream);
-
- serd_env_foreach(env,
- (SerdPrefixSink)serd_writer_set_prefix,
- writer);
-
- return writer;
-}
-
-static size_t
-file_sink(const void* buf, size_t len, void* stream)
-{
- FILE* file = (FILE*)stream;
- return fwrite(buf, 1, len, file);
-}
-
-static bool
-sord_write_file_handle(SordModel* model,
- SerdEnv* env,
- SerdSyntax syntax,
- FILE* fd,
- const uint8_t* base_uri_str_in,
- SordNode* graph,
- const uint8_t* blank_prefix)
-{
- SerdWriter* writer = make_writer(env, syntax, base_uri_str_in,
- file_sink, fd);
- sord_write_writer(model, writer, graph);
- serd_writer_free(writer);
- return true;
-}
-
-SORD_API
-bool
-sord_write_file(SordModel* model,
- SerdEnv* env,
- SerdSyntax syntax,
- const uint8_t* uri,
- SordNode* graph,
- const uint8_t* blank_prefix)
-{
- const uint8_t* const path = sord_file_uri_to_path(uri);
- if (!path) {
- return false;
- }
-
- FILE* const fd = fopen((const char*)path, "w");
- if (!fd) {
- fprintf(stderr, "Failed to open file %s\n", path);
- return false;
- }
-
- const bool ret = sord_write_file_handle(model, env, syntax, fd,
- uri, graph, blank_prefix);
- fclose(fd);
- return ret;
-}
-
static void
write_statement(SordModel* sord, SerdWriter* writer, SordQuad tup,
- const SordNode* anon_subject)
+ SerdStatementFlags flags)
{
const SordNode* s = tup[SORD_SUBJECT];
const SordNode* p = tup[SORD_PREDICATE];
@@ -248,84 +135,50 @@ write_statement(SordModel* sord, SerdWriter* writer, SordQuad tup,
language.buf = (const uint8_t*)lang_str;
};
- SerdStatementFlags flags = 0;
+ // TODO: Subject abbreviation
- SerdNode subject = *ss;
- if (anon_subject) {
- assert(s == anon_subject);
- // TODO: Need context to abbreviate correctly
- //flags |= SERD_ANON_S_BEGIN;
- } else if (sord_node_is_inline_object(s)) {
+ if (sord_node_is_inline_object(s) && !(flags & SERD_ANON_CONT)) {
return;
}
- if (sord_node_is_inline_object(o)) {
- SerdNode anon = *so;
+ if (sord_node_is_inline_object(o)) {
SordQuad sub_pat = { o, 0, 0, 0 };
SordIter* sub_iter = sord_find(sord, sub_pat);
- flags |= (sub_iter) ? SERD_ANON_O_BEGIN : SERD_EMPTY_O;
+
+ SerdStatementFlags start_flags = flags
+ | ((sub_iter) ? SERD_ANON_O_BEGIN : SERD_EMPTY_O);
serd_writer_write_statement(
- writer, flags, NULL, &subject, sp, &anon, sd, &language);
+ writer, start_flags, NULL, ss, sp, so, sd, &language);
if (sub_iter) {
+ flags |= SERD_ANON_CONT;
for (; !sord_iter_end(sub_iter); sord_iter_next(sub_iter)) {
SordQuad sub_tup;
sord_iter_get(sub_iter, sub_tup);
- write_statement(sord, writer, sub_tup, o);
+ write_statement(sord, writer, sub_tup, flags);
}
sord_iter_free(sub_iter);
serd_writer_end_anon(writer, so);
}
- } else if (!sord_node_is_inline_object(s) || s == anon_subject) {
+ } else {
serd_writer_write_statement(
- writer, flags, NULL, &subject, sp, so, sd, &language);
+ writer, flags, NULL, ss, sp, so, sd, &language);
}
}
bool
-sord_write_writer(SordModel* model,
- SerdWriter* writer,
- SordNode* graph)
+sord_write(SordModel* model,
+ SerdWriter* writer,
+ SordNode* graph)
{
SordQuad pat = { 0, 0, 0, graph };
SordIter* iter = sord_find(model, pat);
for (; !sord_iter_end(iter); sord_iter_next(iter)) {
SordQuad tup;
sord_iter_get(iter, tup);
- write_statement(model, writer, tup, NULL);
+ write_statement(model, writer, tup, 0);
}
sord_iter_free(iter);
return true;
}
-
-struct SerdBuffer {
- uint8_t* buf;
- size_t len;
-};
-
-static size_t
-string_sink(const void* buf, size_t len, void* stream)
-{
- struct SerdBuffer* out = (struct SerdBuffer*)stream;
- out->buf = realloc(out->buf, out->len + len);
- memcpy(out->buf + out->len, buf, len);
- out->len += len;
- return len;
-}
-
-SORD_API
-uint8_t*
-sord_write_string(SordModel* model,
- SerdEnv* env,
- SerdSyntax syntax,
- const uint8_t* base_uri)
-{
- struct SerdBuffer buf = { NULL, 0 };
-
- SerdWriter* writer = make_writer(env, syntax, base_uri, string_sink, &buf);
- sord_write_writer(model, writer, NULL);
- serd_writer_free(writer);
- string_sink("", 1, &buf);
- return buf.buf;
-}