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-rw-r--r--src/writer.c96
1 files changed, 67 insertions, 29 deletions
diff --git a/src/writer.c b/src/writer.c
index 5bb3bd0d..e99d62d8 100644
--- a/src/writer.c
+++ b/src/writer.c
@@ -47,7 +47,9 @@ typedef enum {
SEP_ANON_END, ///< End of anonymous node (']')
SEP_LIST_BEGIN, ///< Start of list ('(')
SEP_LIST_SEP, ///< List separator (whitespace)
- SEP_LIST_END ///< End of list (')')
+ SEP_LIST_END, ///< End of list (')')
+ SEP_GRAPH_BEGIN, ///< Start of graph ('{')
+ SEP_GRAPH_END ///< End of graph ('}')
} Sep;
typedef struct {
@@ -70,6 +72,8 @@ static const SepRule rules[] = {
{ "(", 1, 0, 0, 0 },
{ NULL, 1, 0, 1, 0 },
{ ")", 1, 1, 0, 0 },
+ { " {", 2, 0, 1, 1 },
+ { " }", 2, 0, 1, 1 },
{ "\n", 1, 0, 1, 0 }
};
@@ -101,6 +105,12 @@ typedef enum {
WRITE_LONG_STRING
} TextContext;
+static bool
+supports_abbrev(const SerdWriter* writer)
+{
+ return writer->syntax == SERD_TURTLE || writer->syntax == SERD_TRIG;
+}
+
static void
w_err(SerdWriter* writer, SerdStatus st, const char* fmt, ...)
{
@@ -411,22 +421,26 @@ write_sep(SerdWriter* writer, const Sep sep)
}
static SerdStatus
-reset_context(SerdWriter* writer, bool del)
+reset_context(SerdWriter* writer, bool graph)
{
- if (del) {
- serd_node_free(&writer->context.graph);
- serd_node_free(&writer->context.subject);
- serd_node_free(&writer->context.predicate);
- writer->context = WRITE_CONTEXT_NULL;
- } else {
- writer->context.graph.type = SERD_NOTHING;
- writer->context.subject.type = SERD_NOTHING;
- writer->context.predicate.type = SERD_NOTHING;
+ if (graph) {
+ writer->context.graph.type = SERD_NOTHING;
}
- writer->empty = false;
+ writer->context.subject.type = SERD_NOTHING;
+ writer->context.predicate.type = SERD_NOTHING;
+ writer->empty = false;
return SERD_SUCCESS;
}
+static SerdStatus
+free_context(SerdWriter* writer)
+{
+ serd_node_free(&writer->context.graph);
+ serd_node_free(&writer->context.subject);
+ serd_node_free(&writer->context.predicate);
+ return reset_context(writer, true);
+}
+
typedef enum {
FIELD_NONE,
FIELD_SUBJECT,
@@ -438,7 +452,7 @@ typedef enum {
static bool
is_inline_start(const SerdWriter* writer, Field field, SerdStatementFlags flags)
{
- return (writer->syntax == SERD_TURTLE &&
+ return (supports_abbrev(writer) &&
((field == FIELD_SUBJECT && (flags & SERD_ANON_S_BEGIN)) ||
(field == FIELD_OBJECT && (flags & SERD_ANON_O_BEGIN))));
}
@@ -460,19 +474,19 @@ write_node(SerdWriter* writer,
if (is_inline_start(writer, field, flags)) {
++writer->indent;
write_sep(writer, SEP_ANON_BEGIN);
- } else if (writer->syntax == SERD_TURTLE
+ } else if (supports_abbrev(writer)
&& (field == FIELD_SUBJECT && (flags & SERD_LIST_S_BEGIN))) {
assert(writer->list_depth == 0);
copy_node(&writer->list_subj, node);
++writer->list_depth;
++writer->indent;
write_sep(writer, SEP_LIST_BEGIN);
- } else if (writer->syntax == SERD_TURTLE
+ } else if (supports_abbrev(writer)
&& (field == FIELD_OBJECT && (flags & SERD_LIST_O_BEGIN))) {
++writer->indent;
++writer->list_depth;
write_sep(writer, SEP_LIST_BEGIN);
- } else if (writer->syntax == SERD_TURTLE
+ } else if (supports_abbrev(writer)
&& ((field == FIELD_SUBJECT && (flags & SERD_EMPTY_S))
|| (field == FIELD_OBJECT && (flags & SERD_EMPTY_O)))) {
sink("[]", 2, writer);
@@ -518,7 +532,7 @@ write_node(SerdWriter* writer,
}
break;
case SERD_LITERAL:
- if (writer->syntax == SERD_TURTLE && datatype && datatype->buf) {
+ if (supports_abbrev(writer) && datatype && datatype->buf) {
const char* type_uri = (const char*)datatype->buf;
if (!strncmp(type_uri, NS_XSD, sizeof(NS_XSD) - 1) && (
!strcmp(type_uri + sizeof(NS_XSD) - 1, "boolean") ||
@@ -537,7 +551,7 @@ write_node(SerdWriter* writer,
break;
}
}
- if (writer->syntax == SERD_TURTLE
+ if (supports_abbrev(writer)
&& (node->flags & (SERD_HAS_NEWLINE|SERD_HAS_QUOTE))) {
sink("\"\"\"", 3, writer);
write_text(writer, WRITE_LONG_STRING, node->buf, node->n_bytes);
@@ -562,11 +576,11 @@ write_node(SerdWriter* writer,
sink("== ", 3, writer);
}
has_scheme = serd_uri_string_has_scheme(node->buf);
- if (field == FIELD_PREDICATE && (writer->syntax == SERD_TURTLE)
+ if (field == FIELD_PREDICATE && supports_abbrev(writer)
&& !strcmp((const char*)node->buf, NS_RDF "type")) {
sink("a", 1, writer);
break;
- } else if ((writer->syntax == SERD_TURTLE)
+ } else if (supports_abbrev(writer)
&& !strcmp((const char*)node->buf, NS_RDF "nil")) {
sink("()", 2, writer);
break;
@@ -586,7 +600,8 @@ write_node(SerdWriter* writer,
bool rooted = uri_is_under(&writer->base_uri, &writer->root_uri);
SerdURI* root = rooted ? &writer->root_uri : & writer->base_uri;
if (!uri_is_under(&abs_uri, root) ||
- writer->syntax != SERD_TURTLE) {
+ writer->syntax == SERD_NTRIPLES ||
+ writer->syntax == SERD_NQUADS) {
serd_uri_serialise(&abs_uri, uri_sink, writer);
} else {
serd_uri_serialise_relative(
@@ -680,11 +695,31 @@ serd_writer_write_statement(SerdWriter* writer,
break;
}
+ if ((graph && !serd_node_equals(graph, &writer->context.graph)) ||
+ (!graph && writer->context.graph.type)) {
+ writer->indent = 0;
+ if (writer->context.subject.type) {
+ write_sep(writer, SEP_END_S);
+ }
+ if (writer->context.graph.type) {
+ write_sep(writer, SEP_GRAPH_END);
+ }
+
+ reset_context(writer, true);
+ if (graph) {
+ TRY(write_node(writer, graph, datatype, lang, FIELD_GRAPH, flags));
+ ++writer->indent;
+ write_sep(writer, SEP_GRAPH_BEGIN);
+ copy_node(&writer->context.graph, graph);
+ }
+ }
+
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);
+ reset_context(writer, false);
+ serd_node_free(&writer->context.subject);
writer->context.subject = writer->list_subj;
writer->list_subj = SERD_NODE_NULL;
}
@@ -728,7 +763,7 @@ serd_writer_write_statement(SerdWriter* writer,
++writer->indent;
}
- reset_context(writer, true);
+ reset_context(writer, false);
copy_node(&writer->context.subject, subject);
if (!(flags & SERD_LIST_S_BEGIN)) {
@@ -772,7 +807,7 @@ serd_writer_end_anon(SerdWriter* writer,
}
--writer->indent;
write_sep(writer, SEP_ANON_END);
- reset_context(writer, true);
+ free_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);
@@ -790,11 +825,14 @@ serd_writer_finish(SerdWriter* writer)
if (writer->context.subject.type) {
sink(" .\n", 3, writer);
}
+ if (writer->context.graph.type) {
+ sink("}\n", 2, writer);
+ }
if (writer->style & SERD_STYLE_BULK) {
serd_bulk_sink_flush(&writer->bulk_sink);
}
writer->indent = 0;
- return reset_context(writer, true);
+ return free_context(writer);
}
SERD_API
@@ -862,14 +900,14 @@ serd_writer_set_base_uri(SerdWriter* writer,
if (writer->syntax == SERD_TURTLE || writer->syntax == SERD_TRIG) {
if (writer->context.graph.type || writer->context.subject.type) {
sink(" .\n\n", 4, writer);
- reset_context(writer, false);
+ reset_context(writer, true);
}
sink("@base <", 7, writer);
sink(uri->buf, uri->n_bytes, writer);
sink("> .\n", 4, writer);
}
writer->indent = 0;
- return reset_context(writer, false);
+ return reset_context(writer, true);
}
return SERD_ERR_UNKNOWN;
}
@@ -900,7 +938,7 @@ serd_writer_set_prefix(SerdWriter* writer,
if (writer->syntax == SERD_TURTLE || writer->syntax == SERD_TRIG) {
if (writer->context.graph.type || writer->context.subject.type) {
sink(" .\n\n", 4, writer);
- reset_context(writer, false);
+ reset_context(writer, true);
}
sink("@prefix ", 8, writer);
sink(name->buf, name->n_bytes, writer);
@@ -909,7 +947,7 @@ serd_writer_set_prefix(SerdWriter* writer,
sink("> .\n", 4, writer);
}
writer->indent = 0;
- return reset_context(writer, false);
+ return reset_context(writer, true);
}
return SERD_ERR_UNKNOWN;
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-05 00:47:57 +0000