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virxml: Add virXMLPropInt
Convenience function to return the value of an integer XML attribute. Signed-off-by: Tim Wiederhake <twiederh@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
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@ -3548,6 +3548,7 @@ virXMLNodeSanitizeNamespaces;
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virXMLNodeToString;
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virXMLParseHelper;
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virXMLPickShellSafeComment;
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virXMLPropInt;
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virXMLPropString;
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virXMLPropStringLimit;
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virXMLPropTristateBool;
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@ -646,6 +646,59 @@ virXMLPropTristateSwitch(xmlNodePtr node,
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}
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/**
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* virXMLPropInt:
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* @node: XML dom node pointer
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* @name: Name of the property (attribute) to get
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* @base: Number base, see strtol
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* @flags: Bitwise or of virXMLPropFlags
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* @result: The returned value
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*
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* Convenience function to return value of an integer attribute.
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*
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* Returns 1 in case of success in which case @result is set,
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* or 0 if the attribute is not present,
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* or -1 and reports an error on failure.
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*/
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int
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virXMLPropInt(xmlNodePtr node,
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const char *name,
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int base,
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virXMLPropFlags flags,
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int *result)
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{
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g_autofree char *tmp = NULL;
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int val;
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if (!(tmp = virXMLPropString(node, name))) {
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if (!(flags & VIR_XML_PROP_REQUIRED))
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return 0;
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virReportError(VIR_ERR_XML_ERROR,
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_("Missing required attribute '%s' in element '%s'"),
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name, node->name);
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return -1;
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}
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if (virStrToLong_i(tmp, NULL, base, &val) < 0) {
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virReportError(VIR_ERR_XML_ERROR,
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_("Invalid value for attribute '%s' in element '%s': '%s'. Expected integer value"),
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name, node->name, tmp);
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return -1;
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}
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if ((flags & VIR_XML_PROP_NONZERO) && (val == 0)) {
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virReportError(VIR_ERR_XML_ERROR,
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_("Invalid value for attribute '%s' in element '%s': Zero is not permitted"),
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name, node->name);
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return -1;
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}
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*result = val;
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return 1;
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}
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/**
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* virXPathBoolean:
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* @xpath: the XPath string to evaluate
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@ -37,6 +37,7 @@ xmlXPathContextPtr virXMLXPathContextNew(xmlDocPtr xml)
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typedef enum {
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VIR_XML_PROP_OPTIONAL = 0, /* Attribute may be absent */
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VIR_XML_PROP_REQUIRED = 1 << 0, /* Attribute may not be absent */
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VIR_XML_PROP_NONZERO = 1 << 1, /* Attribute may not be zero */
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} virXMLPropFlags;
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@ -117,6 +118,14 @@ virXMLPropTristateSwitch(xmlNodePtr node,
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virTristateSwitch *result)
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ATTRIBUTE_NONNULL(0) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
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int
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virXMLPropInt(xmlNodePtr node,
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const char *name,
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int base,
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virXMLPropFlags flags,
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int *result)
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ATTRIBUTE_NONNULL(0) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(4);
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/* Internal function; prefer the macros below. */
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xmlDocPtr
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virXMLParseHelper(int domcode,
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