1 files changed, 31 insertions, 0 deletions
diff --git a/src/libui_sdl/libui/unix/graphemes.c b/src/libui_sdl/libui/unix/graphemes.c
new file mode 100644
index 0000000..a2c47b7
--- /dev/null
+++ b/src/libui_sdl/libui/unix/graphemes.c
@@ -0,0 +1,31 @@
+// 25 may 2016
+#include "uipriv_unix.h"
+
+ptrdiff_t *graphemes(const char *text, PangoContext *context)
+{
+	size_t len, lenchars;
+	PangoLogAttr *logattrs;
+	ptrdiff_t *out;
+	ptrdiff_t *op;
+	size_t i;
+
+	len = strlen(text);
+	lenchars = g_utf8_strlen(text, -1);
+	logattrs = (PangoLogAttr *) uiAlloc((lenchars + 1) * sizeof (PangoLogAttr), "PangoLogAttr[]");
+	pango_get_log_attrs(text, len,
+		-1, NULL,
+		logattrs, lenchars + 1);
+
+	// should be more than enough
+	out = (ptrdiff_t *) uiAlloc((lenchars + 2) * sizeof (ptrdiff_t), "ptrdiff_t[]");
+	op = out;
+	for (i = 0; i < lenchars; i++)
+		if (logattrs[i].is_cursor_position != 0)
+			// TODO optimize this
+			*op++ = g_utf8_offset_to_pointer(text, i) - text;
+	// and do the last one
+	*op++ = len;
+
+	uiFree(logattrs);
+	return out;
+}