[libvirt PATCH 03/38] virxml: Add virXMLPropOnOff
Convenience function to return value of an on / off attribute.
Does not use virTristateSwitchTypeFromString to disallow "default".
Signed-off-by: Tim Wiederhake <twiederh(a)redhat.com>
---
src/util/virxml.c | 37 +++++++++++++++++++++++++++++++++++++
src/util/virxml.h | 3 +++
2 files changed, 40 insertions(+)
diff --git a/src/util/virxml.c b/src/util/virxml.c
index 47e8414bd5..7c06530d25 100644
--- a/src/util/virxml.c
+++ b/src/util/virxml.c
@@ -593,6 +593,43 @@ virXMLPropYesNo(xmlNodePtr node, const char* name, virTristateBool
*value)
}
+/**
+ * virXMLPropOnOff:
+ * @node: XML dom node pointer
+ * @name: Name of the property (attribute) to get
+ * @value: The returned virTristateSwitch value
+ *
+ * Convenience function to return value of an on / off attribute.
+ *
+ * Returns 1 in case of success in which case @value is set,
+ * or 0 if the attribute is not present,
+ * or -1 and reports an error on failure.
+ */
+int
+virXMLPropOnOff(xmlNodePtr node, const char* name, virTristateSwitch *value)
+{
+ g_autofree char *tmp = virXMLPropString(node, name);
+
+ if (!tmp)
+ return 0;
+
+ if (STREQ("on", tmp)) {
+ *value = VIR_TRISTATE_SWITCH_ON;
+ return 1;
+ }
+
+ if (STREQ("off", tmp)) {
+ *value = VIR_TRISTATE_SWITCH_OFF;
+ return 1;
+ }
+
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Invalid value for attribute '%s' in node '%s':
'%s'. Expected 'on' or 'off'"),
+ name, node->name, tmp);
+ return -1;
+}
+
+
/**
* virXPathBoolean:
* @xpath: the XPath string to evaluate
diff --git a/src/util/virxml.h b/src/util/virxml.h
index 072948b3e2..d0577723ef 100644
--- a/src/util/virxml.h
+++ b/src/util/virxml.h
@@ -81,6 +81,9 @@ char * virXMLNodeContentString(xmlNodePtr node);
int virXMLPropYesNo(xmlNodePtr node,
const char *name,
virTristateBool *value);
+int virXMLPropOnOff(xmlNodePtr node,
+ const char *name,
+ virTristateSwitch *value);
/* Internal function; prefer the macros below. */
xmlDocPtr virXMLParseHelper(int domcode,
--
2.26.2