[PATCH 2/5] util: Add virQuadstateOption and helpers

[Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>]

Signed-off-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxx>
---
 src/util/virenum.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 src/util/virenum.h | 15 +++++++++++++++
 2 files changed, 61 insertions(+)

diff --git a/src/util/virenum.c b/src/util/virenum.c
index c6936e58ff..8474db9b2b 100644
--- a/src/util/virenum.c
+++ b/src/util/virenum.c
@@ -35,6 +35,14 @@ VIR_ENUM_IMPL(virTristateSwitch,
               "off",
 );
 
+VIR_ENUM_IMPL(virQuadstateOption,
+              VIR_QUADSTATE_OPTION_LAST,
+              "default",
+              "yes",
+              "no",
+              "optional",
+);
+
 
 virTristateBool
 virTristateBoolFromBool(bool val)
@@ -110,6 +118,44 @@ virTristateSwitchToBool(virTristateSwitch t,
 }
 
 
+virQuadstateOption
+virQuadstateOptionFromBool(bool val)
+{
+    if (val)
+        return VIR_QUADSTATE_OPTION_YES;
+    else
+        return VIR_QUADSTATE_OPTION_NO;
+}
+
+
+/**
+ * virQuadstateOptionToBool:
+ * @t: a virQuadstateOption value
+ * @b: pointer to a boolean to be updated according to the value of @t
+ *
+ * The value pointed to by @b is updated if the quadstate value @t is neither absent or optional.
+ */
+void
+virQuadstateOptionToBool(virQuadstateOption t,
+                         bool *b)
+{
+    switch (t) {
+    case VIR_QUADSTATE_OPTION_YES:
+        *b = true;
+        break;
+
+    case VIR_QUADSTATE_OPTION_NO:
+        *b = false;
+        break;
+
+    case VIR_QUADSTATE_OPTION_ABSENT:
+    case VIR_QUADSTATE_OPTION_OPTIONAL:
+    case VIR_QUADSTATE_OPTION_LAST:
+        break;
+    }
+}
+
+
 int
 virEnumFromString(const char * const *types,
                   unsigned int ntypes,
diff --git a/src/util/virenum.h b/src/util/virenum.h
index 98f01d574d..bd45d470c4 100644
--- a/src/util/virenum.h
+++ b/src/util/virenum.h
@@ -64,16 +64,31 @@ typedef enum {
     VIR_TRISTATE_SWITCH_LAST
 } virTristateSwitch;
 
+typedef enum {
+    VIR_QUADSTATE_OPTION_ABSENT = 0,
+    VIR_QUADSTATE_OPTION_YES,
+    VIR_QUADSTATE_OPTION_NO,
+    VIR_QUADSTATE_OPTION_OPTIONAL,
+
+    VIR_QUADSTATE_OPTION_LAST
+} virQuadstateOption;
+
 VIR_ENUM_DECL(virTristateBool);
 VIR_ENUM_DECL(virTristateSwitch);
+VIR_ENUM_DECL(virQuadstateOption);
 
 virTristateBool virTristateBoolFromBool(bool val);
 void virTristateBoolToBool(virTristateBool t, bool *b);
 virTristateSwitch virTristateSwitchFromBool(bool val);
 void virTristateSwitchToBool(virTristateSwitch t, bool *b);
+virQuadstateOption virQuadstateOptionFromBool(bool val);
+void virQuadstateOptionToBool(virQuadstateOption t, bool *b);
 
 /* the two enums must be in sync to be able to use helpers interchangeably in
  * some special cases */
 G_STATIC_ASSERT((int)VIR_TRISTATE_BOOL_YES == (int)VIR_TRISTATE_SWITCH_ON);
 G_STATIC_ASSERT((int)VIR_TRISTATE_BOOL_NO == (int)VIR_TRISTATE_SWITCH_OFF);
 G_STATIC_ASSERT((int)VIR_TRISTATE_BOOL_ABSENT == (int)VIR_TRISTATE_SWITCH_ABSENT);
+G_STATIC_ASSERT((int)VIR_QUADSTATE_OPTION_YES == (int)VIR_TRISTATE_SWITCH_ON);
+G_STATIC_ASSERT((int)VIR_QUADSTATE_OPTION_NO == (int)VIR_TRISTATE_SWITCH_OFF);
+G_STATIC_ASSERT((int)VIR_QUADSTATE_OPTION_ABSENT == (int)VIR_TRISTATE_SWITCH_ABSENT);
-- 
2.41.0