util: Add functions to simplify bool->virTristate(Bool|Switch) assignment

virTristateBoolFromBool and virTristateSwitchFromBool convert a boolean
to the correct enum value.

src/libvirt_private.syms

@@ -2950,8 +2950,10 @@ virSetNonBlock;
 virSetSockReuseAddr;
 virSetUIDGID;
 virSetUIDGIDWithCaps;
+virTristateBoolFromBool;
 virTristateBoolTypeFromString;
 virTristateBoolTypeToString;
+virTristateSwitchFromBool;
 virTristateSwitchTypeFromString;
 virTristateSwitchTypeToString;
 virUpdateSelfLastChanged;

src/util/virutil.c

@@ -100,6 +100,26 @@ VIR_ENUM_IMPL(virTristateSwitch, VIR_TRISTATE_SWITCH_LAST,
               "off")
 
 
+virTristateBool
+virTristateBoolFromBool(bool val)
+{
+    if (val)
+        return VIR_TRISTATE_BOOL_YES;
+    else
+        return VIR_TRISTATE_BOOL_NO;
+}
+
+
+virTristateSwitch
+virTristateSwitchFromBool(bool val)
+{
+    if (val)
+        return VIR_TRISTATE_SWITCH_ON;
+    else
+        return VIR_TRISTATE_SWITCH_OFF;
+}
+
+
 #ifndef WIN32
 
 int virSetInherit(int fd, bool inherit)

src/util/virutil.h

@@ -193,6 +193,9 @@ typedef enum {
 VIR_ENUM_DECL(virTristateBool)
 VIR_ENUM_DECL(virTristateSwitch)
 
+virTristateBool virTristateBoolFromBool(bool val);
+virTristateSwitch virTristateSwitchFromBool(bool val);
+
 /* the two enums must be in sync to be able to use helpers interchangeably in
  * some special cases */
 verify((int)VIR_TRISTATE_BOOL_YES == (int)VIR_TRISTATE_SWITCH_ON);