From 652e7cfe62f629deb7a5a427d3cb77d78e532ec6 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Fri, 15 Jun 2018 15:15:55 -0400 Subject: Make SerdSink opaque --- serd/serd.h | 63 +++++++++++++++++++++++++++++++++++++++++++++---------- src/n3.c | 1 + src/reader.c | 1 + src/sink.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++------ src/sink.h | 33 +++++++++++++++++++++++++++++ src/writer.c | 1 + tests/serd_test.c | 15 +++++++------ 7 files changed, 151 insertions(+), 23 deletions(-) create mode 100644 src/sink.h diff --git a/serd/serd.h b/serd/serd.h index 14a82389..90d6aa47 100644 --- a/serd/serd.h +++ b/serd/serd.h @@ -99,6 +99,11 @@ typedef struct SerdReaderImpl SerdReader; */ typedef struct SerdWriterImpl SerdWriter; +/** + An interface that receives a stream of RDF data. +*/ +typedef struct SerdSinkImpl SerdSink; + /** Return status code. */ @@ -793,17 +798,6 @@ typedef SerdStatus (*SerdStatementSink)(void* handle, typedef SerdStatus (*SerdEndSink)(void* handle, const SerdNode* node); -/** - An interface that receives a stream of RDF data. -*/ -typedef struct SerdSink { - void* handle; - SerdBaseSink base; - SerdPrefixSink prefix; - SerdStatementSink statement; - SerdEndSink end; -} SerdSink; - /** @} @name World @@ -932,6 +926,53 @@ serd_env_foreach(const SerdEnv* env, @{ */ +/** + Create a new sink. + + Initially, the sink has no set functions and will do nothing. Use the + serd_sink_set_*_func functions to set handlers for various events. + + @param handle Opaque handle that will be passed to sink functions. +*/ +SERD_API +SerdSink* +serd_sink_new(void* handle); + +/** + Free `sink`. +*/ +SERD_API +void +serd_sink_free(SerdSink* sink); + +/** + Set a function to be called when the base URI changes. +*/ +SERD_API +SerdStatus +serd_sink_set_base_func(SerdSink* sink, SerdBaseSink base_func); + +/** + Set a function to be called when a namespace prefix is defined. +*/ +SERD_API +SerdStatus +serd_sink_set_prefix_func(SerdSink* sink, SerdPrefixSink prefix_func); + +/** + Set a function to be called when a statement is emitted. +*/ +SERD_API +SerdStatus +serd_sink_set_statement_func(SerdSink* sink, SerdStatementSink statement_func); + +/** + Set a function to be called when an anonymous node ends. +*/ +SERD_API +SerdStatus +serd_sink_set_end_func(SerdSink* sink, SerdEndSink end_func); + /** Set the base URI. diff --git a/src/n3.c b/src/n3.c index f8fa0439..e0898823 100644 --- a/src/n3.c +++ b/src/n3.c @@ -18,6 +18,7 @@ #include "node.h" #include "reader.h" #include "serd_internal.h" +#include "sink.h" #include "stack.h" #include "string_utils.h" #include "uri_utils.h" diff --git a/src/reader.c b/src/reader.c index fb06bdc3..9b1d9f4d 100644 --- a/src/reader.c +++ b/src/reader.c @@ -20,6 +20,7 @@ #include "node.h" #include "serd/serd.h" #include "serd_internal.h" +#include "sink.h" #include "stack.h" #include "statement.h" #include "system.h" diff --git a/src/sink.c b/src/sink.c index fffa386e..d14ad8f1 100644 --- a/src/sink.c +++ b/src/sink.c @@ -14,14 +14,61 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#include "serd/serd.h" +#include "sink.h" #include "statement.h" +#include "serd/serd.h" + +#include + +SerdSink* +serd_sink_new(void* handle) +{ + SerdSink* sink = (SerdSink*)calloc(1, sizeof(SerdSink)); + + sink->handle = handle; + return sink; +} + +void +serd_sink_free(SerdSink* sink) +{ + free(sink); +} + +SerdStatus +serd_sink_set_base_func(SerdSink* sink, SerdBaseSink base_func) +{ + sink->base = base_func; + return SERD_SUCCESS; +} + +SerdStatus +serd_sink_set_prefix_func(SerdSink* sink, SerdPrefixSink prefix_func) +{ + sink->prefix = prefix_func; + return SERD_SUCCESS; +} + +SerdStatus +serd_sink_set_statement_func(SerdSink* sink, SerdStatementSink statement_func) +{ + sink->statement = statement_func; + return SERD_SUCCESS; +} + +SerdStatus +serd_sink_set_end_func(SerdSink* sink, SerdEndSink end_func) +{ + sink->end = end_func; + return SERD_SUCCESS; +} + SerdStatus serd_sink_write_base(const SerdSink* sink, const SerdNode* uri) { - return sink->base(sink->handle, uri); + return sink->base ? sink->base(sink->handle, uri) : SERD_SUCCESS; } SerdStatus @@ -29,7 +76,7 @@ serd_sink_write_prefix(const SerdSink* sink, const SerdNode* name, const SerdNode* uri) { - return sink->prefix(sink->handle, name, uri); + return sink->prefix ? sink->prefix(sink->handle, name, uri) : SERD_SUCCESS; } SerdStatus @@ -37,7 +84,8 @@ serd_sink_write_statement(const SerdSink* sink, const SerdStatementFlags flags, const SerdStatement* statement) { - return sink->statement(sink->handle, flags, statement); + return sink->statement ? sink->statement(sink->handle, flags, statement) + : SERD_SUCCESS; } SerdStatus @@ -50,11 +98,11 @@ serd_sink_write(const SerdSink* sink, { const SerdStatement statement = { { subject, predicate, object, graph }, NULL }; - return sink->statement(sink->handle, flags, &statement); + return serd_sink_write_statement(sink, flags, &statement); } SerdStatus serd_sink_write_end(const SerdSink* sink, const SerdNode* node) { - return sink->end(sink->handle, node); + return sink->end ? sink->end(sink->handle, node) : SERD_SUCCESS; } diff --git a/src/sink.h b/src/sink.h new file mode 100644 index 00000000..03523370 --- /dev/null +++ b/src/sink.h @@ -0,0 +1,33 @@ +/* + Copyright 2011-2018 David Robillard + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +#ifndef SERD_SINK_H +#define SERD_SINK_H + +#include "serd/serd.h" + +/** + An interface that receives a stream of RDF data. +*/ +struct SerdSinkImpl { + void* handle; + SerdBaseSink base; + SerdPrefixSink prefix; + SerdStatementSink statement; + SerdEndSink end; +}; + +#endif // SERD_SINK_H diff --git a/src/writer.c b/src/writer.c index 55feb3f0..065d65b0 100644 --- a/src/writer.c +++ b/src/writer.c @@ -18,6 +18,7 @@ #include "env.h" #include "node.h" #include "serd_internal.h" +#include "sink.h" #include "stack.h" #include "string_utils.h" #include "system.h" diff --git a/tests/serd_test.c b/tests/serd_test.c index 2fddc5bf..de1fd5e6 100644 --- a/tests/serd_test.c +++ b/tests/serd_test.c @@ -482,9 +482,9 @@ main(void) serd_writer_chop_blank_prefix(writer, NULL); const SerdSink* iface = serd_writer_get_sink(writer); - assert(iface->base(iface->handle, lit)); - assert(iface->prefix(iface->handle, lit, lit)); - assert(iface->end(iface->handle, NULL)); + assert(serd_sink_write_base(iface, lit)); + assert(serd_sink_write_prefix(iface, lit, lit)); + assert(serd_sink_write_end(iface, NULL)); assert(serd_writer_get_env(writer) == env); uint8_t buf[] = { 0xEF, 0xBF, 0xBD, 0 }; @@ -568,9 +568,11 @@ main(void) // Rewind and test reader fseek(fd, 0, SEEK_SET); - ReaderTest rt = { 0, NULL }; - SerdSink sink = { &rt, NULL, NULL, test_sink, NULL }; - SerdReader* reader = serd_reader_new(world, SERD_TURTLE, &sink, 4096); + ReaderTest rt = { 0, NULL }; + SerdSink* sink = serd_sink_new(&rt); + serd_sink_set_statement_func(sink, test_sink); + + SerdReader* reader = serd_reader_new(world, SERD_TURTLE, sink, 4096); assert(reader); SerdNode* g = serd_new_uri("http://example.org/"); @@ -591,6 +593,7 @@ main(void) serd_reader_finish(reader); serd_reader_free(reader); + serd_sink_free(sink); fclose(fd); serd_env_free(env); -- cgit v1.2.1