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410 lines
11 KiB
C#
410 lines
11 KiB
C#
//
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// Commons.Xml.Relaxng.Derivative.Util.cs
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//
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// Author:
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// Atsushi Enomoto <ginga@kit.hi-ho.ne.jp>
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//
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// 2003 Atsushi Enomoto "No rights reserved."
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//
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// Copyright (c) 2004 Novell Inc.
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// All rights reserved
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Xml;
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using QName = System.Xml.XmlQualifiedName;
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namespace Commons.Xml.Relaxng.Derivative
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{
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public class RdpUtil
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{
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public static char[] WhitespaceChars = " \t\r\n".ToCharArray ();
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internal static RdpBinaryFunction AfterFunction =
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new RdpBinaryFunction (After);
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internal static RdpBinaryFunction GroupFunction =
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new RdpBinaryFunction (Group);
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internal static RdpBinaryFunction InterleaveFunction =
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new RdpBinaryFunction (Interleave);
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// Generating simplified pattern status (similar to XML representation).
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#region Debug
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private static string DebugNameClass (RdpNameClass n)
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{
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switch (n.NameClassType) {
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case RdpNameClassType.Name:
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RdpName nm = (RdpName)n;
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return "<name ns='" + nm.NamespaceURI + "'>"
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+ nm.LocalName + "</name>\n";
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case RdpNameClassType.NsName:
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return "<nsName ns='" + ((RdpNsName)n).NamespaceURI + "'/>\n";
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case RdpNameClassType.NameClassChoice:
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RdpNameClassChoice nc = (RdpNameClassChoice) n;
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return "<choice>" + DebugNameClass (nc.LValue) + DebugNameClass (nc.RValue) + "</choice>";
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default:
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return "<" + n.NameClassType.ToString () + "/>\n";
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}
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}
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internal static string DebugRdpPattern (RdpPattern p, Hashtable visitedPattern)
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{
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if (p is RdpText)
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return "<text/>\n";
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if (p is RdpEmpty)
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return "<empty/>\n";
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if (p is RdpNotAllowed)
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return "<notAllowed/>\n";
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if (visitedPattern.Contains (p))
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return "<" + p.PatternType + " ref='" + p.GetHashCode () + "'/>";
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visitedPattern.Add (p, p);
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string intl = "(id=" + p.GetHashCode () + ") ";
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RdpAbstractSingleContent s = p as RdpAbstractSingleContent;
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if (s != null)
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intl = DebugRdpPattern (s.Child, visitedPattern);
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RdpAbstractBinary b = p as RdpAbstractBinary;
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if (b != null)
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intl = DebugRdpPattern (b.LValue, visitedPattern) +
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DebugRdpPattern (b.RValue, visitedPattern);
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RdpData data = p as RdpData;
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if (data != null)
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intl = String.Format ("name={0},ns={1},type={2} {3}",
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data.Datatype.LocalName,
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data.Datatype.NamespaceURI,
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data.Datatype.GetType (),
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data is RdpDataExcept ? DebugRdpPattern (((RdpDataExcept) data).Except, visitedPattern) : String.Empty);
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RdpValue value = p as RdpValue;
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if (value != null)
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intl = String.Format ("name={0},ns={1},value={2} type={3}",
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value.Datatype.LocalName,
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value.Datatype.NamespaceURI,
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value.Value,
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value.Datatype.GetType ());
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RdpElement el = p as RdpElement;
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if (el != null)
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intl = DebugNameClass (el.NameClass) +
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DebugRdpPattern (el.Children, visitedPattern);
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RdpAttribute at = p as RdpAttribute;
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if (at != null)
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intl = DebugNameClass (at.NameClass) +
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DebugRdpPattern (at.Children, visitedPattern);
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string str = String.Format ("<{0} id='id{1}'>\n{2}\n</{0}>",
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p.PatternType.ToString (),
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p.GetHashCode (),
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intl);
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return str;
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}
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#endregion
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// contains :: NameClass -> QName -> Bool
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internal static bool Contains (RdpNameClass nc, string name, string ns)
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{
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return nc.Contains (name, ns);
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}
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// nullable :: Pattern -> Bool
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internal static bool Nullable (RdpPattern p)
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{
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return p.Nullable;
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}
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/*
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// childDeriv :: Context -> Pattern -> ChildNode -> Pattern
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internal static RdpPattern ChildDeriv (RdpContext ctx, RdpPattern p, RdpChildNode child)
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{
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return p.ChildDeriv (child);
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}
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*/
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// textDeriv :: Context -> Pattern -> String -> Pattern
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internal static RdpPattern TextDeriv (XmlReader reader, RdpPattern p, string s)
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{
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return p.TextDeriv (s, reader);
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}
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// listDeriv :: Context -> Pattern -> [String] -> Pattern
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internal static RdpPattern ListDeriv (XmlReader reader, RdpPattern p, string [] list)
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{
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return p.ListDeriv (list, 0, reader);
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}
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// choice :: Pattern -> Pattern -> Pattern
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internal static RdpPattern Choice (RdpPattern p1, RdpPattern p2)
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{
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return p1.Choice (p2);
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}
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// group :: Pattern -> Pattern -> Pattern
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internal static RdpPattern Group (RdpPattern p1, RdpPattern p2)
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{
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return p1.Group (p2);
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}
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// interleave :: Pattern -> Pattern -> Pattern
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internal static RdpPattern Interleave (RdpPattern p1, RdpPattern p2)
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{
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return p1.Interleave (p2);
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}
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// after :: Pattern -> Pattern -> Pattern
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internal static RdpPattern After (RdpPattern p1, RdpPattern p2)
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{
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return p1.After (p2);
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}
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// datatypeAllows :: Datatype -> ParamList -> String -> Context -> Bool
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internal static bool DatatypeAllows (RdpDatatype dt, string value, XmlReader reader)
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{
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return dt.IsAllowed (value, reader);
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}
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// datatypeEqual :: Datatype -> String -> Context -> String -> Context -> Bool
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internal static bool DatatypeEqual (RdpDatatype dt, string value1, string value2, XmlReader reader)
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{
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return dt.IsTypeEqual (value1, value2, reader);
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}
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#if false
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// normalizeWhitespace :: String -> String
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internal static string NormalizeString (string s)
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{
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throw new NotImplementedException ();
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}
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#endif
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#if false
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// applyAfter :: (Pattern -> Pattern) -> Pattern -> Pattern
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internal static RdpPattern ApplyAfter (RdpApplyAfterHandler h, RdpPattern p)
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{
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if (p is RdpAfter)
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return After (p.LValue, h (p.RValue));
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}
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#endif
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#region Validation Core
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// startTagOpenDeriv :: Pattern -> QName -> Pattern
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// TODO remains: Interleave, OneOrMore, Group, After
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internal static RdpPattern StartTagOpenDeriv (RdpPattern pattern, string name, string ns)
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{
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return pattern.StartTagOpenDeriv (name, ns);
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}
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/*
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// attsDeriv :: Context -> Pattern -> [AttributeNode] -> Pattern
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// [implemented in RdpPattern]
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internal static RdpPattern AttsDeriv (RdpPattern p, RdpAttributes attributes)
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{
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return p.AttsDeriv (attributes);
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}
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*/
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// attDeriv :: Context -> Pattern -> AttributeNode -> Pattern
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// [all implemented]
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internal static RdpPattern AttDeriv (XmlReader reader,
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RdpPattern p, string name, string ns, string value)
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{
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return p.AttDeriv (name, ns, value, reader);
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}
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// valueMatch :: Context -> Pattern -> String -> Bool
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// [implemented in RdpPattern]
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internal static bool ValueMatch (RdpPattern p, string s, XmlReader reader)
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{
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return p.ValueMatch (s, reader);
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}
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// startTagCloseDeriv :: Pattern -> Pattern
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// [implemented]
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internal static RdpPattern StartTagCloseDeriv (RdpPattern p)
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{
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return p.StartTagCloseDeriv ();
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}
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// oneOrMore :: Pattern -> Pattern
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// [implemented in RdpPattern]
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internal static RdpPattern OneOrMore (RdpPattern p)
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{
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return p.OneOrMore ();
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}
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// writespace :: String -> Bool
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// [implemented here]
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internal static bool Whitespace (string s)
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{
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return s.Trim (WhitespaceChars).Length == 0;
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}
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// endTagDeriv :: Pattern -> Pattern
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// [implemented]
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internal static RdpPattern EndTagDeriv (RdpPattern p)
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{
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return p.EndTagDeriv ();
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}
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// Name class analysis
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internal static bool NamesOverlap (RdpPattern p1,
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RdpPattern p2, bool checkElements)
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{
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if (p1 == p2)
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return true;
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RdpAbstractBinary bp1 = p1 as RdpAbstractBinary;
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if (bp1 != null)
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return NamesOverlap (bp1.LValue, p2, checkElements)
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|| NamesOverlap (bp1.RValue, p2, checkElements);
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RdpOneOrMore rp1 = p1 as RdpOneOrMore;
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if (rp1 != null)
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return NamesOverlap (rp1.Child, p2, checkElements);
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RdpAttribute ap1 = p1 as RdpAttribute;
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if (ap1 != null)
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return NamesOverlap (p2, ap1.NameClass, checkElements);
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if (!checkElements)
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return false;
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RdpElement ep1 = p1 as RdpElement;
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if (ep1 != null)
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return NamesOverlap (p2, ep1.NameClass, checkElements);
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return false;
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}
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// Name class analysis
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static bool NamesOverlap (RdpPattern p1,
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RdpNameClass n, bool checkElements)
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{
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RdpAbstractBinary bp1 = p1 as RdpAbstractBinary;
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if (bp1 != null)
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return NamesOverlap (bp1.LValue, n, checkElements)
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|| NamesOverlap (bp1.RValue, n, checkElements);
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RdpOneOrMore rp1 = p1 as RdpOneOrMore;
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if (rp1 != null)
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return NamesOverlap (rp1.Child, n, checkElements);
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RdpAttribute ap1 = p1 as RdpAttribute;
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if (ap1 != null)
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return NameClassOverlap (ap1.NameClass, n);
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if (!checkElements)
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return false;
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RdpElement ep1 = p1 as RdpElement;
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if (ep1 != null)
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return NameClassOverlap (ep1.NameClass, n);
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return false;
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}
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internal static bool NameClassOverlap (RdpNameClass n1, RdpNameClass n2)
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{
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Hashtable names = new Hashtable ();
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GetNameClassRepresentatives (n1, names);
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GetNameClassRepresentatives (n2, names);
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foreach (QName qn in names.Keys)
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if (NameClassBothContain (n1, n2, qn))
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return true;
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return false;
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}
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static QName illegalQName = new QName ("", "\x1");
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static void GetNameClassRepresentatives (
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RdpNameClass n, Hashtable names)
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{
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if (n is RdpAnyName) {
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names [illegalQName] = illegalQName;
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return;
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}
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RdpAnyNameExcept exc = n as RdpAnyNameExcept;
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if (exc != null) {
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GetNameClassRepresentatives (exc.ExceptNameClass, names);
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names [illegalQName] = illegalQName;
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return;
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}
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RdpNsName ns = n as RdpNsName;
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if (ns != null) {
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QName nn = new QName (String.Empty, ns.NamespaceURI);
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names [nn] = nn;
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return;
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}
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RdpNsNameExcept nse = n as RdpNsNameExcept;
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if (nse != null) {
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GetNameClassRepresentatives (nse.ExceptNameClass, names);
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QName nn = new QName (String.Empty, nse.NamespaceURI);
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names [nn] = nn;
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return;
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}
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RdpName name = n as RdpName;
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if (name != null) {
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QName qname = new QName (name.LocalName, name.NamespaceURI);
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names [qname] = qname;
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return;
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}
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else {
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RdpNameClassChoice c = (RdpNameClassChoice) n;
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GetNameClassRepresentatives (c.LValue, names);
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GetNameClassRepresentatives (c.RValue, names);
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return;
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}
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}
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static bool NameClassBothContain (
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RdpNameClass n1, RdpNameClass n2, QName qn)
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{
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return Contains (n1, qn.Name, qn.Namespace) &&
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Contains (n2, qn.Name, qn.Namespace);
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}
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#endregion
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}
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public delegate RdpPattern RdpBinaryFunction (RdpPattern p1, RdpPattern p2);
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class RdpFlip
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{
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RdpBinaryFunction func;
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RdpPattern arg;
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public RdpFlip (RdpBinaryFunction func, RdpPattern p)
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{
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this.func = func;
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this.arg = p;
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}
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public RdpPattern Apply (RdpPattern p)
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{
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return func (p, arg);
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}
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}
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}
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