1 files changed, 45 insertions, 0 deletions
diff --git a/c/common.c b/c/common.c
new file mode 100644
index 0000000..c1f9614
--- /dev/null
+++ b/c/common.c
@@ -0,0 +1,45 @@
+#include <windows.h>
+#include <SWI-Prolog.h>
+
+#include "resource.h"
+
+/* Convert zero-terminated non-wide (multi-byte) string to
+ * zero-terminated wide/non-wide string depending on UNICODE. */
+TCHAR *
+TSZFromSZ(char *sz, int iCp)
+{
+	TCHAR *tsz;
+
+#ifdef UNICODE
+	int cbMultiByte, cchWideChar;
+
+	cbMultiByte = strlen(sz)+1;
+	cchWideChar = MultiByteToWideChar(iCp, 0, sz, cbMultiByte, NULL, 0);
+	tsz = malloc(cchWideChar*sizeof(WCHAR));
+	if (!tsz)
+		return NULL;
+	if (!MultiByteToWideChar(iCp, 0, sz, cbMultiByte, tsz, cchWideChar))
+		return NULL;
+#else
+	tsz = malloc(strlen(sz)+1);
+	if (!tsz)
+		return NULL;
+	strcpy(tsz, sz);
+#endif
+
+	return tsz;
+}
+
+int
+Watched(int iEpisode)
+{
+	term_t t;
+
+	t = PL_new_term_refs(1);
+	if (!PL_put_integer(t+0, iEpisode))
+		return 0;
+
+	return PL_call_predicate(NULL, PL_Q_NORMAL,
+		PL_predicate("watched",  1, "track_episodes"),
+		t);
+}