1 files changed, 67 insertions, 0 deletions
diff --git a/src/syntax.c b/src/syntax.c
new file mode 100644
index 00000000..a4e9f5da
--- /dev/null
+++ b/src/syntax.c
@@ -0,0 +1,67 @@
+/*
+  Copyright 2011-2018 David Robillard <http://drobilla.net>
+
+  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.
+*/
+
+#include "string_utils.h"
+
+#include "serd/serd.h"
+
+#include <stdbool.h>
+#include <string.h>
+
+typedef struct {
+	const char* name;
+	const char* extension;
+	SerdSyntax  syntax;
+} Syntax;
+
+static const Syntax syntaxes[] = {
+	{"turtle",   ".ttl",  SERD_TURTLE},
+	{"ntriples", ".nt",   SERD_NTRIPLES},
+	{"nquads",   ".nq",   SERD_NQUADS},
+	{"trig",     ".trig", SERD_TRIG},
+	{NULL,       NULL,	  (SerdSyntax)0},
+};
+
+SerdSyntax
+serd_syntax_by_name(const char* const name)
+{
+	for (const Syntax* s = syntaxes; s->name; ++s) {
+		if (!serd_strncasecmp(s->name, name, strlen(name))) {
+			return s->syntax;
+		}
+	}
+	return (SerdSyntax)0;
+}
+
+SerdSyntax
+serd_guess_syntax(const char* const filename)
+{
+	const char* ext = strrchr(filename, '.');
+	if (ext) {
+		for (const Syntax* s = syntaxes; s->name; ++s) {
+			if (!serd_strncasecmp(s->extension, ext, strlen(ext))) {
+				return s->syntax;
+			}
+		}
+	}
+	return (SerdSyntax)0;
+}
+
+bool
+serd_syntax_has_graphs(const SerdSyntax syntax)
+{
+	return syntax == SERD_NQUADS || syntax == SERD_TRIG;
+}