[PATCH xrandr 3/3] Special-case printing of the GUID property

[Aaron Plattner]

Rather than printing GUIDs as 16 signed decimal integers, print them in
{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} format.

Signed-off-by: Aaron Plattner <aplattner at nvidia.com>
---
 xrandr.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/xrandr.c b/xrandr.c
index 3950e86c8505..a4368fb0cf49 100644
--- a/xrandr.c
+++ b/xrandr.c
@@ -2426,6 +2426,25 @@ print_edid(int nitems, const unsigned char *prop)
 }
 
 static void
+print_guid(const unsigned char *prop)
+{
+    int k;
+
+    printf("{");
+
+    for (k = 0; k < 16; k++)
+    {
+	printf("%02" PRIX8, prop[k]);
+	if (k == 3 || k == 5 || k == 7 || k == 9)
+	{
+	    printf("-");
+	}
+    }
+
+    printf("}\n");
+}
+
+static void
 print_output_property(const char *atom_name,
                       int value_format,
                       Atom value_type,
@@ -2444,6 +2463,12 @@ print_output_property(const char *atom_name,
 	print_edid (nitems, prop);
 	return;
     }
+    else if (strcmp (atom_name, "GUID") == 0 && value_format == 8 &&
+	     value_type == XA_INTEGER && nitems == 16)
+    {
+	print_guid (prop);
+	return;
+    }
 
     for (k = 0; k < nitems; k++)
     {
-- 
1.8.5.2