/// <summary>
/// Resolves all inclusions by replacing each <c>include</c> element by the
/// resource it references.
/// </summary>
/// <remarks>
/// Potentially infinite <c>include</c> recursion is terminated after
/// a finite number of steps.
/// </remarks>
/// <param name="xSchema">Validation schema.</param>
/// <param name="resolver">Resolver of included elements</param>
/// <param name="nsManager">Namespace manager</param>
/// <exception cref="InvalidOperationException">If the <c>include</c>
/// recursion exceeds a limit.</exception>
/// <exception cref="ArgumentNullException" />
public static void ResolveInclusions(XDocument xSchema, IInclusionResolver resolver, XmlNamespaceManager nsManager)
{
if (xSchema == null)
{
throw new ArgumentNullException("xSchema");
}
if (nsManager == null)
{
throw new ArgumentNullException("nsManager");
}
int maxSteps = 500; // recursion termination limit
int i;
for (i = 0; i < maxSteps; i++)
{
// select inclusions
List <XElement> listIncludes = new List <XElement>();
foreach (XElement xInclude in xSchema.XPathSelectElements("//sch:include", nsManager))
{
listIncludes.Add(xInclude);
}
if (listIncludes.Count == 0)
{
break;
}
// replace inclusions
foreach (XElement xInclude in listIncludes)
{
string href = xInclude.Attribute(XName.Get("href")).Value;
XDocument xHref = resolver.Resolve(href);
xInclude.ReplaceWith(xHref.Root);
}
}
if (maxSteps == i)
{
throw new InvalidOperationException(String.Format(
"There is a possibility of infinite recursion of include elements. " +
"Terminated after the maximum of {0} steps.", maxSteps));
}
}
/// <summary>
/// Resolves all inclusions by replacing each <c>include</c> element by the
/// resource it references.
/// </summary>
/// <remarks>
/// Potentially infinite <c>include</c> recursion is terminated after
/// a finite number of steps.
/// </remarks>
/// <param name="xSchema">Validation schema.</param>
/// <param name="resolver">Resolver of included elements</param>
/// <param name="nsManager">Namespace manager</param>
/// <exception cref="InvalidOperationException">If the <c>include</c>
/// recursion exceeds a limit.</exception>
/// <exception cref="ArgumentNullException" />
public static void ResolveInclusions(XDocument xSchema, IInclusionResolver resolver, XmlNamespaceManager nsManager)
{
if (xSchema == null)
{
throw new ArgumentNullException("xSchema");
}
if (nsManager == null)
{
throw new ArgumentNullException("nsManager");
}
int maxSteps = 500; // recursion termination limit
int i;
for (i = 0; i < maxSteps; i++)
{
// select inclusions
List<XElement> listIncludes = new List<XElement>();
foreach (XElement xInclude in xSchema.XPathSelectElements("//sch:include", nsManager))
{
listIncludes.Add(xInclude);
}
if (listIncludes.Count == 0)
{
break;
}
// replace inclusions
foreach (XElement xInclude in listIncludes)
{
string href = xInclude.Attribute(XName.Get("href")).Value;
XDocument xHref = resolver.Resolve(href);
xInclude.ReplaceWith(xHref.Root);
}
}
if (maxSteps == i)
{
throw new InvalidOperationException(String.Format(
"There is a possibility of infinite recursion of include elements. " +
"Terminated after the maximum of {0} steps.", maxSteps));
}
}
