[PATCH 2/3] util: Add virKeycodeValueIsModifier function

[Martin Kletzander <mkletzan@xxxxxxxxxx>]

This function returns true if the value supplied is a modifier (Ctrl,
Shift, Alt or Meta).

Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
---
 src/libvirt_private.syms |  1 +
 src/util/virkeycode.c    | 21 +++++++++++++++++++++
 src/util/virkeycode.h    |  2 ++
 3 files changed, 24 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b8f35e8..5c3de01 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1530,6 +1530,7 @@ virJSONValueToString;
 virKeycodeSetTypeFromString;
 virKeycodeSetTypeToString;
 virKeycodeValueFromString;
+virKeycodeValueIsModifier;
 virKeycodeValueTranslate;


diff --git a/src/util/virkeycode.c b/src/util/virkeycode.c
index 7880a0a..7705ffd 100644
--- a/src/util/virkeycode.c
+++ b/src/util/virkeycode.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (C) 2014 Red Hat, Inc.
  * Copyright (c) 2011 Lai Jiangshan
  *
  * This library is free software; you can redistribute it and/or
@@ -124,3 +125,23 @@ int virKeycodeValueTranslate(virKeycodeSet from_codeset,

     return -1;
 }
+
+
+bool
+virKeycodeValueIsModifier(unsigned int key_value)
+{
+    switch (key_value) {
+    case 29:  /* Left Control */
+    case 157: /* Right Control */
+    case 42:  /* Left Shift */
+    case 54:  /* Right Shift */
+    case 56:  /* Left Alt */
+    case 184: /* Right Alt */
+    case 219: /* Left Meta */
+    case 220: /* Right Meta */
+        return true;
+
+    default:
+        return false;
+    }
+}
diff --git a/src/util/virkeycode.h b/src/util/virkeycode.h
index 6947cfe..d04a2a4 100644
--- a/src/util/virkeycode.h
+++ b/src/util/virkeycode.h
@@ -1,6 +1,7 @@
 /*
  * virkeycode.h: keycodes definitions and declarations
  *
+ * Copyright (C) 2014 Red Hat, Inc.
  * Copyright (c) 2011 Lai Jiangshan
  *
  * This library is free software; you can redistribute it and/or
@@ -29,5 +30,6 @@ int virKeycodeValueFromString(virKeycodeSet codeset, const char *keyname);
 int virKeycodeValueTranslate(virKeycodeSet from_codeset,
                         virKeycodeSet to_offset,
                         int key_value);
+bool virKeycodeValueIsModifier(unsigned int key_value);

 #endif
-- 
2.1.3

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