72 lines
2.5 KiB
C#
72 lines
2.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="PrefixQName.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">Microsoft</owner>
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//------------------------------------------------------------------------------
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namespace System.Xml.Xsl.XsltOld {
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using Res = System.Xml.Utils.Res;
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using System;
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using System.Diagnostics;
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using System.Xml;
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internal sealed class PrefixQName {
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public string Prefix;
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public string Name;
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public string Namespace;
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internal void ClearPrefix() {
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Prefix = string.Empty;
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}
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internal void SetQName(string qname) {
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PrefixQName.ParseQualifiedName(qname, out Prefix, out Name);
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}
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//
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// Parsing qualified names
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//
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public static void ParseQualifiedName(string qname, out string prefix, out string local) {
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Debug.Assert(qname != null);
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prefix = string.Empty;
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local = string.Empty;
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// parse first NCName (prefix or local name)
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int position = ValidateNames.ParseNCName(qname);
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if (position == 0) {
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throw XsltException.Create(Res.Xslt_InvalidQName, qname);
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}
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local = qname.Substring(0, position);
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// not at the end -> parse ':' and the second NCName (local name)
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if (position < qname.Length) {
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if (qname[position] == ':') {
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int startLocalNamePos = ++position;
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prefix = local;
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int len = ValidateNames.ParseNCName(qname, position);
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position += len;
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if (len == 0) {
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throw XsltException.Create(Res.Xslt_InvalidQName, qname);
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}
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local = qname.Substring(startLocalNamePos, len);
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}
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// still not at the end -> error
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if (position < qname.Length) {
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throw XsltException.Create(Res.Xslt_InvalidQName, qname);
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}
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}
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}
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public static bool ValidatePrefix(string prefix) {
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if (prefix.Length == 0) {
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return false;
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}
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int endPos = ValidateNames.ParseNCName(prefix, 0);
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return endPos == prefix.Length;
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}
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}
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}
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