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//------------------------------------------------------------------------------
// <copyright file="XmlQualifiedNameTest.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
using System;
using System.Xml;
using System.Xml.Schema;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
namespace System.Xml.Xsl {
/// <summary>
/// XmlQualifiedName extends XmlQualifiedName to support wildcards and adds nametest functionality
/// Following are the examples:
/// {A}:B XmlQualifiedNameTest.New("B", "A") Match QName with namespace A and local name B
/// * XmlQualifiedNameTest.New(null, null) Match any QName
/// {A}:* XmlQualifiedNameTest.New(null, "A") Match QName with namespace A and any local name
/// XmlQualifiedNameTest.New("A", false)
/// *:B XmlQualifiedNameTest.New("B", null) Match QName with any namespace and local name B
/// ~{A}:* XmlQualifiedNameTest.New("B", "A") Match QName with namespace not A and any local name
/// {~A}:B only as a result of the intersection Match QName with namespace not A and local name B
/// </summary>
internal class XmlQualifiedNameTest : XmlQualifiedName {
bool exclude;
const string wildcard = "*";
static XmlQualifiedNameTest wc = XmlQualifiedNameTest.New(wildcard, wildcard);
/// <summary>
/// Full wildcard
/// </summary>
public static XmlQualifiedNameTest Wildcard {
get { return wc; }
}
/// <summary>
/// Constructor
/// </summary>
private XmlQualifiedNameTest(string name, string ns, bool exclude) : base (name, ns) {
this.exclude = exclude;
}
/// <summary>
/// Construct new from name and namespace. Returns singleton Wildcard in case full wildcard
/// </summary>
public static XmlQualifiedNameTest New(string name, string ns) {
if (ns == null && name == null) {
return Wildcard;
}
else {
return new XmlQualifiedNameTest(name == null ? wildcard : name, ns == null ? wildcard : ns, false);
}
}
/// <summary>
/// True if matches any name and any namespace
/// </summary>
public bool IsWildcard {
get { return (object)this == (object)Wildcard; }
}
/// <summary>
/// True if matches any name
/// </summary>
public bool IsNameWildcard {
get { return (object)this.Name == (object)wildcard; }
}
/// <summary>
/// True if matches any namespace
/// </summary>
public bool IsNamespaceWildcard {
get { return (object)this.Namespace == (object)wildcard; }
}
private bool IsNameSubsetOf(XmlQualifiedNameTest other) {
return other.IsNameWildcard || this.Name == other.Name;
}
//
private bool IsNamespaceSubsetOf(XmlQualifiedNameTest other) {
return other.IsNamespaceWildcard
|| (this.exclude == other.exclude && this.Namespace == other.Namespace)
|| (other.exclude && !this.exclude && this.Namespace != other.Namespace);
}
/// <summary>
/// True if this matches every QName other does
/// </summary>
public bool IsSubsetOf(XmlQualifiedNameTest other) {
return IsNameSubsetOf(other) && IsNamespaceSubsetOf(other);
}
/// <summary>
/// Return true if the result of intersection with other is not empty
/// </summary>
public bool HasIntersection(XmlQualifiedNameTest other) {
return (IsNamespaceSubsetOf(other) || other.IsNamespaceSubsetOf(this)) && (IsNameSubsetOf(other) || other.IsNameSubsetOf(this));
}
/// <summary>
/// String representation
/// </summary>
public override string ToString() {
if ((object)this == (object)Wildcard) {
return "*";
}
else {
if (this.Namespace.Length == 0) {
return this.Name;
}
else if ((object)this.Namespace == (object)wildcard) {
return "*:" + this.Name;
}
else if (this.exclude) {
return "{~" + this.Namespace + "}:" + this.Name;
}
else {
return "{" + this.Namespace + "}:" + this.Name;
}
}
}
#if SchemaTypeImport
/// <summary>
/// Construct new from XmlQualifiedName. Returns singleton Wildcard in case full wildcard
/// </summary>
public static XmlQualifiedNameTest New(XmlQualifiedName name) {
if (name.IsEmpty) {
return Wildcard;
}
else {
return new XmlQualifiedNameTest(name.Name, name.Namespace, false);
}
}
/// <summary>
/// Construct new "exclusion" name test
/// </summary>
public static XmlQualifiedNameTest New(string ns, bool exclude) {
Debug.Assert(ns != null);
return new XmlQualifiedNameTest(wildcard, ns, exclude);
}
/// <summary>
/// Return the result of intersection with other
/// </summary>
public XmlQualifiedNameTest Intersect(XmlQualifiedNameTest other) {
// Namespace
// this\other ~y * y
// ~x x=y ? this|other : null this x!=y ? other : null
// * other this|other other
// x x!=y ? this : null this x=y ? this|other : null
XmlQualifiedNameTest namespaceFrom = IsNamespaceSubsetOf(other) ? this : other.IsNamespaceSubsetOf(this) ? other : null;
XmlQualifiedNameTest nameFrom = IsNameSubsetOf(other) ? this : other.IsNameSubsetOf(this) ? other : null;
if ((object)namespaceFrom == (object)nameFrom) {
return namespaceFrom;
}
else if (namespaceFrom == null || nameFrom == null) {
return null;
}
else {
return new XmlQualifiedNameTest(nameFrom.Name, namespaceFrom.Namespace, namespaceFrom.ExcludeNamespace);
}
}
/// <summary>
/// True if neither name nor namespace is a wildcard
/// </summary>
public bool IsSingleName {
get { return (object)this.Name != (object)wildcard && (object)this.Namespace != (object)wildcard && this.exclude == false; }
}
/// <summary>
/// True if matches any namespace other then this.Namespace
/// </summary>
public bool ExcludeNamespace {
get { return this.exclude; }
}
#endif
}
}
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