First Commit

libui-ng/unix/opentype.c

@@ -0,0 +1,26 @@
+// 11 may 2017
+#include "uipriv_unix.h"
+#include "attrstr.h"
+
+// see https://developer.mozilla.org/en/docs/Web/CSS/font-feature-settings
+static uiForEach toCSS(const uiOpenTypeFeatures *otf, char a, char b, char c, char d, uint32_t value, void *data)
+{
+	GString *s = (GString *) data;
+
+	// the last trailing comma is removed after foreach is done
+	g_string_append_printf(s, "\"%c%c%c%c\" %" PRIu32 ", ",
+		a, b, c, d, value);
+	return uiForEachContinue;
+}
+
+GString *uiprivOpenTypeFeaturesToPangoCSSFeaturesString(const uiOpenTypeFeatures *otf)
+{
+	GString *s;
+
+	s = g_string_new("");
+	uiOpenTypeFeaturesForEach(otf, toCSS, s);
+	if (s->len != 0)
+		// and remove the last comma
+		g_string_truncate(s, s->len - 2);
+	return s;
+}