From: Michal Privoznik <mpriv...@redhat.com>
Similarly to other virXPath* functions, let's have a helper that
evaluates an XPath and stores the value into virTristateSwitch.
Signed-off-by: Michal Privoznik <mpriv...@redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/virxml.c | 34 ++++++++++++++++++++++++++++++++++
src/util/virxml.h | 5 +++++
3 files changed, 40 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index fe72402527..db909e4b28 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -3826,6 +3826,7 @@ virXPathLongLong;
virXPathNode;
virXPathNodeSet;
virXPathString;
+virXPathTristateSwitch;
virXPathUInt;
virXPathUIntBase;
virXPathULongLong;
diff --git a/src/util/virxml.c b/src/util/virxml.c
index bb80bb7444..60485c10fa 100644
--- a/src/util/virxml.c
+++ b/src/util/virxml.c
@@ -284,6 +284,40 @@ virXPathLongLong(const char *xpath,
}
+/**
+ * virXPathTristateSwitch:
+ * @xpath: the XPath string to evaluate
+ * @ctxt: an XPath context
+ * @value: the returned virTristateSwitch value
+ *
+ * Convenience function to evaluate an XPath tristate value. The @xpath
+ * expression must ensure that the evaluated value is returned as a
+ * string (use the 'string()' conversion in the expression).
+ *
+ * Returns 0 in case of success in which case @value is set,
+ * or -1 if the XPath evaluation failed or -2 if the
+ * value isn't of a virTristateSwitch value.
+ */
+int
+virXPathTristateSwitch(const char *xpath,
+ xmlXPathContextPtr ctxt,
+ virTristateSwitch *value)
+{
+ g_autoptr(xmlXPathObject) obj = NULL;
+ int rc;
+
+ if (!(obj = virXPathEvalString(xpath, ctxt)))
+ return -1;
+
+ rc = virTristateSwitchTypeFromString((char *)obj->stringval);
+ if (rc < 0)
+ return -2;
+
+ *value = rc;
+ return 0;
+}
+
+
/**
* virXMLCheckIllegalChars:
* @nodeName: Name of checked node
diff --git a/src/util/virxml.h b/src/util/virxml.h
index 7cc3f47913..dfec386494 100644
--- a/src/util/virxml.h
+++ b/src/util/virxml.h
@@ -73,6 +73,11 @@ virXPathLongLong(const char *xpath,
xmlXPathContextPtr ctxt,
long long *value);
+int
+virXPathTristateSwitch(const char *xpath,
+ xmlXPathContextPtr ctxt,
+ virTristateSwitch *value);
+
xmlNodePtr
virXMLNodeGetSubelement(xmlNodePtr node,
const char *name);
--
2.49.1
