582 lines
21 KiB
C#
582 lines
21 KiB
C#
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// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: CfgParser
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**
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**
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** Purpose: XMLParser and Tree builder internal to BCL
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**
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**
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===========================================================*/
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namespace System
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{
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using System.Runtime.InteropServices;
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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using System.Security.Permissions;
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using System.Security;
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using System.Globalization;
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using System.IO;
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using System.Runtime.Versioning;
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using System.Diagnostics.Contracts;
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[Serializable]
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internal enum ConfigEvents
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{
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StartDocument = 0,
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StartDTD = StartDocument + 1,
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EndDTD = StartDTD + 1,
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StartDTDSubset = EndDTD + 1,
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EndDTDSubset = StartDTDSubset + 1,
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EndProlog = EndDTDSubset + 1,
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StartEntity = EndProlog + 1,
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EndEntity = StartEntity + 1,
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EndDocument = EndEntity + 1,
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DataAvailable = EndDocument + 1,
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LastEvent = DataAvailable
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}
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[Serializable]
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internal enum ConfigNodeType
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{
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Element = 1,
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Attribute = Element + 1,
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Pi = Attribute + 1,
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XmlDecl = Pi + 1,
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DocType = XmlDecl + 1,
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DTDAttribute = DocType + 1,
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EntityDecl = DTDAttribute + 1,
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ElementDecl = EntityDecl + 1,
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AttlistDecl = ElementDecl + 1,
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Notation = AttlistDecl + 1,
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Group = Notation + 1,
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IncludeSect = Group + 1,
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PCData = IncludeSect + 1,
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CData = PCData + 1,
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IgnoreSect = CData + 1,
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Comment = IgnoreSect + 1,
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EntityRef = Comment + 1,
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Whitespace = EntityRef + 1,
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Name = Whitespace + 1,
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NMToken = Name + 1,
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String = NMToken + 1,
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Peref = String + 1,
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Model = Peref + 1,
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ATTDef = Model + 1,
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ATTType = ATTDef + 1,
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ATTPresence = ATTType + 1,
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DTDSubset = ATTPresence + 1,
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LastNodeType = DTDSubset + 1
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}
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[Serializable]
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internal enum ConfigNodeSubType
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{
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Version = (int)ConfigNodeType.LastNodeType,
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Encoding = Version + 1,
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Standalone = Encoding + 1,
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NS = Standalone + 1,
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XMLSpace = NS + 1,
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XMLLang = XMLSpace + 1,
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System = XMLLang + 1,
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Public = System + 1,
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NData = Public + 1,
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AtCData = NData + 1,
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AtId = AtCData + 1,
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AtIdref = AtId + 1,
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AtIdrefs = AtIdref + 1,
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AtEntity = AtIdrefs + 1,
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AtEntities = AtEntity + 1,
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AtNmToken = AtEntities + 1,
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AtNmTokens = AtNmToken + 1,
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AtNotation = AtNmTokens + 1,
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AtRequired = AtNotation + 1,
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AtImplied = AtRequired + 1,
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AtFixed = AtImplied + 1,
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PentityDecl = AtFixed + 1,
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Empty = PentityDecl + 1,
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Any = Empty + 1,
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Mixed = Any + 1,
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Sequence = Mixed + 1,
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Choice = Sequence + 1,
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Star = Choice + 1,
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Plus = Star + 1,
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Questionmark = Plus + 1,
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LastSubNodeType = Questionmark + 1
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}
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internal abstract class BaseConfigHandler
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{
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// These delegates must be at the very start of the object
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// This is necessary because unmanaged code takes a dependency on this layout
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// Any changes made to this must be reflected in ConfigHelper.h in ConfigFactory class
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protected Delegate[] eventCallbacks;
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public BaseConfigHandler()
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{
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InitializeCallbacks();
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}
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private void InitializeCallbacks()
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{
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if (eventCallbacks == null)
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{
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eventCallbacks = new Delegate[6];
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eventCallbacks[0] = new NotifyEventCallback(this.NotifyEvent);
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eventCallbacks[1] = new BeginChildrenCallback(this.BeginChildren);
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eventCallbacks[2] = new EndChildrenCallback(this.EndChildren);
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eventCallbacks[3] = new ErrorCallback(this.Error);
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eventCallbacks[4] = new CreateNodeCallback(this.CreateNode);
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eventCallbacks[5] = new CreateAttributeCallback(this.CreateAttribute);
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}
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}
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private delegate void NotifyEventCallback(ConfigEvents nEvent);
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public abstract void NotifyEvent(ConfigEvents nEvent);
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private delegate void BeginChildrenCallback(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength);
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public abstract void BeginChildren(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength);
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private delegate void EndChildrenCallback(int fEmpty,
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int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength);
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public abstract void EndChildren(int fEmpty,
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int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength);
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private delegate void ErrorCallback(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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public abstract void Error(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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private delegate void CreateNodeCallback(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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public abstract void CreateNode(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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private delegate void CreateAttributeCallback(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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public abstract void CreateAttribute(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)]String text,
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int textLength,
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int prefixLength);
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[System.Security.SecurityCritical] // auto-generated
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[ResourceExposure(ResourceScope.Machine)]
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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internal extern void RunParser(String fileName);
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}
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// Class used to build a DOM like tree of parsed XML
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internal class ConfigTreeParser : BaseConfigHandler
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{
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ConfigNode rootNode = null;
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ConfigNode currentNode = null;
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String fileName = null;
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int attributeEntry;
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String key = null;
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String [] treeRootPath = null; // element to start tree
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bool parsing = false;
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int depth = 0;
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int pathDepth = 0;
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int searchDepth = 0;
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bool bNoSearchPath = false;
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// Track state for error message formatting
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String lastProcessed = null;
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bool lastProcessedEndElement;
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// NOTE: This parser takes a path eg. /configuration/system.runtime.remoting
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// and will return a node which matches this.
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[ResourceExposure(ResourceScope.Machine)]
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[ResourceConsumption(ResourceScope.Machine)]
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internal ConfigNode Parse(String fileName, String configPath)
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{
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return Parse(fileName, configPath, false);
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}
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[System.Security.SecuritySafeCritical] // auto-generated
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[ResourceExposure(ResourceScope.Machine)]
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[ResourceConsumption(ResourceScope.Machine)]
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internal ConfigNode Parse(String fileName, String configPath, bool skipSecurityStuff)
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{
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if (fileName == null)
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throw new ArgumentNullException("fileName");
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Contract.EndContractBlock();
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this.fileName = fileName;
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if (configPath[0] == '/'){
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treeRootPath = configPath.Substring(1).Split('/');
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pathDepth = treeRootPath.Length - 1;
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bNoSearchPath = false;
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}
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else{
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treeRootPath = new String[1];
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treeRootPath[0] = configPath;
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bNoSearchPath = true;
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}
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if (!skipSecurityStuff) {
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(new FileIOPermission( FileIOPermissionAccess.Read, System.IO.Path.GetFullPathInternal( fileName ) )).Demand();
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}
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#pragma warning disable 618
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(new SecurityPermission(SecurityPermissionFlag.UnmanagedCode)).Assert();
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#pragma warning restore 618
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try
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{
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RunParser(fileName);
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}
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catch(FileNotFoundException) {
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throw; // Pass these through unadulterated.
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}
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catch(DirectoryNotFoundException) {
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throw; // Pass these through unadulterated.
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}
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catch(UnauthorizedAccessException) {
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throw;
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}
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catch(FileLoadException) {
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throw;
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}
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catch(Exception inner) {
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String message = GetInvalidSyntaxMessage();
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// Neither Exception nor ApplicationException are the "right" exceptions here.
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// Desktop throws ApplicationException for backwards compatibility.
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// On Silverlight we don't have ApplicationException, so fall back to Exception.
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#if FEATURE_CORECLR
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throw new Exception(message, inner);
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#else
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throw new ApplicationException(message, inner);
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#endif
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}
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return rootNode;
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}
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public override void NotifyEvent(ConfigEvents nEvent)
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{
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BCLDebug.Trace("REMOTE", "NotifyEvent "+((Enum)nEvent).ToString()+"\n");
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}
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public override void BeginChildren(int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength)
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{
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//Trace("BeginChildren",size,subType,nType,terminal,text,textLength,prefixLength,0);
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if (!parsing &&
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(!bNoSearchPath
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&& depth == (searchDepth + 1)
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&& String.Compare(text, treeRootPath[searchDepth], StringComparison.Ordinal) == 0))
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{
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searchDepth++;
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}
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}
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public override void EndChildren(int fEmpty,
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int size,
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ConfigNodeSubType subType,
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ConfigNodeType nType,
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int terminal,
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[MarshalAs(UnmanagedType.LPWStr)] String text,
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int textLength,
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int prefixLength)
|
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{
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lastProcessed = text;
|
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lastProcessedEndElement = true;
|
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if (parsing)
|
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{
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//Trace("EndChildren",size,subType,nType,terminal,text,textLength,prefixLength,fEmpty);
|
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|
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if (currentNode == rootNode)
|
||
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{
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// End of section of tree which is parsed
|
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parsing = false;
|
||
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}
|
||
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|
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currentNode = currentNode.Parent;
|
||
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}
|
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else if (nType == ConfigNodeType.Element){
|
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if(depth == searchDepth && String.Compare(text, treeRootPath[searchDepth - 1], StringComparison.Ordinal) == 0)
|
||
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{
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||
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searchDepth--;
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||
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depth--;
|
||
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}
|
||
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else
|
||
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depth--;
|
||
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}
|
||
|
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}
|
||
|
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|
||
|
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public override void Error(int size,
|
||
|
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ConfigNodeSubType subType,
|
||
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ConfigNodeType nType,
|
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|
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int terminal,
|
||
|
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[MarshalAs(UnmanagedType.LPWStr)]String text,
|
||
|
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int textLength,
|
||
|
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int prefixLength)
|
||
|
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{
|
||
|
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//Trace("Error",size,subType,nType,terminal,text,textLength,prefixLength,0);
|
||
|
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}
|
||
|
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|
||
|
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public override void CreateNode(int size,
|
||
|
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ConfigNodeSubType subType,
|
||
|
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ConfigNodeType nType,
|
||
|
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int terminal,
|
||
|
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[MarshalAs(UnmanagedType.LPWStr)]String text,
|
||
|
|
int textLength,
|
||
|
|
int prefixLength)
|
||
|
|
{
|
||
|
|
//Trace("CreateNode",size,subType,nType,terminal,text,textLength,prefixLength,0);
|
||
|
|
|
||
|
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if (nType == ConfigNodeType.Element)
|
||
|
|
{
|
||
|
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// New Node
|
||
|
|
lastProcessed = text;
|
||
|
|
lastProcessedEndElement = false;
|
||
|
|
|
||
|
|
if (parsing
|
||
|
|
|| (bNoSearchPath &&
|
||
|
|
String.Compare(text, treeRootPath[0], StringComparison.OrdinalIgnoreCase) == 0)
|
||
|
|
|| (depth == searchDepth && searchDepth == pathDepth &&
|
||
|
|
String.Compare(text, treeRootPath[pathDepth], StringComparison.OrdinalIgnoreCase) == 0 ))
|
||
|
|
{
|
||
|
|
parsing = true;
|
||
|
|
|
||
|
|
ConfigNode parentNode = currentNode;
|
||
|
|
currentNode = new ConfigNode(text, parentNode);
|
||
|
|
if (rootNode == null)
|
||
|
|
rootNode = currentNode;
|
||
|
|
else
|
||
|
|
parentNode.AddChild(currentNode);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
depth++;
|
||
|
|
}
|
||
|
|
else if (nType == ConfigNodeType.PCData)
|
||
|
|
{
|
||
|
|
// Data node
|
||
|
|
if (currentNode != null)
|
||
|
|
{
|
||
|
|
currentNode.Value = text;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public override void CreateAttribute(int size,
|
||
|
|
ConfigNodeSubType subType,
|
||
|
|
ConfigNodeType nType,
|
||
|
|
int terminal,
|
||
|
|
[MarshalAs(UnmanagedType.LPWStr)]String text,
|
||
|
|
int textLength,
|
||
|
|
int prefixLength)
|
||
|
|
{
|
||
|
|
//Trace("CreateAttribute",size,subType,nType,terminal,text,textLength,prefixLength,0);
|
||
|
|
if (parsing)
|
||
|
|
{
|
||
|
|
// if the value of the attribute is null, the parser doesn't come back, so need to store the attribute when the
|
||
|
|
// attribute name is encountered
|
||
|
|
if (nType == ConfigNodeType.Attribute)
|
||
|
|
{
|
||
|
|
attributeEntry = currentNode.AddAttribute(text, "");
|
||
|
|
key = text;
|
||
|
|
}
|
||
|
|
else if (nType == ConfigNodeType.PCData)
|
||
|
|
{
|
||
|
|
currentNode.ReplaceAttribute(attributeEntry, key, text);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
String message = GetInvalidSyntaxMessage();
|
||
|
|
// Neither Exception nor ApplicationException are the "right" exceptions here.
|
||
|
|
// Desktop throws ApplicationException for backwards compatibility.
|
||
|
|
// On Silverlight we don't have ApplicationException, so fall back to Exception.
|
||
|
|
#if FEATURE_CORECLR
|
||
|
|
throw new Exception(message);
|
||
|
|
#else
|
||
|
|
throw new ApplicationException(message);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if _DEBUG
|
||
|
|
[System.Diagnostics.Conditional("_LOGGING")]
|
||
|
|
private void Trace(String name,
|
||
|
|
int size,
|
||
|
|
ConfigNodeSubType subType,
|
||
|
|
ConfigNodeType nType,
|
||
|
|
int terminal,
|
||
|
|
[MarshalAs(UnmanagedType.LPWStr)]String text,
|
||
|
|
int textLength,
|
||
|
|
int prefixLength, int fEmpty)
|
||
|
|
{
|
||
|
|
|
||
|
|
BCLDebug.Trace("REMOTE","Node "+name);
|
||
|
|
BCLDebug.Trace("REMOTE","text "+text);
|
||
|
|
BCLDebug.Trace("REMOTE","textLength "+textLength);
|
||
|
|
BCLDebug.Trace("REMOTE","size "+size);
|
||
|
|
BCLDebug.Trace("REMOTE","subType "+((Enum)subType).ToString());
|
||
|
|
BCLDebug.Trace("REMOTE","nType "+((Enum)nType).ToString());
|
||
|
|
BCLDebug.Trace("REMOTE","terminal "+terminal);
|
||
|
|
BCLDebug.Trace("REMOTE","prefixLength "+prefixLength);
|
||
|
|
BCLDebug.Trace("REMOTE","fEmpty "+fEmpty+"\n");
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
private String GetInvalidSyntaxMessage()
|
||
|
|
{
|
||
|
|
String lastProcessedTag = null;
|
||
|
|
|
||
|
|
if (lastProcessed != null)
|
||
|
|
lastProcessedTag = (lastProcessedEndElement ? "</" : "<") + lastProcessed + ">";
|
||
|
|
|
||
|
|
return Environment.GetResourceString("XML_Syntax_InvalidSyntaxInFile", fileName, lastProcessedTag);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Node in Tree produced by ConfigTreeParser
|
||
|
|
internal class ConfigNode
|
||
|
|
{
|
||
|
|
String m_name = null;
|
||
|
|
String m_value = null;
|
||
|
|
ConfigNode m_parent = null;
|
||
|
|
List<ConfigNode> m_children = new List<ConfigNode>(5);
|
||
|
|
List<DictionaryEntry> m_attributes = new List<DictionaryEntry>(5);
|
||
|
|
|
||
|
|
internal ConfigNode(String name, ConfigNode parent)
|
||
|
|
{
|
||
|
|
m_name = name;
|
||
|
|
m_parent = parent;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal String Name
|
||
|
|
{
|
||
|
|
get {return m_name;}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal String Value
|
||
|
|
{
|
||
|
|
get {return m_value;}
|
||
|
|
set {m_value = value;}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal ConfigNode Parent
|
||
|
|
{
|
||
|
|
get {return m_parent;}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal List<ConfigNode> Children
|
||
|
|
{
|
||
|
|
get {return m_children;}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal List<DictionaryEntry> Attributes
|
||
|
|
{
|
||
|
|
get {return m_attributes;}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void AddChild(ConfigNode child)
|
||
|
|
{
|
||
|
|
child.m_parent = this;
|
||
|
|
m_children.Add(child);
|
||
|
|
}
|
||
|
|
|
||
|
|
internal int AddAttribute(String key, String value)
|
||
|
|
{
|
||
|
|
m_attributes.Add(new DictionaryEntry(key, value));
|
||
|
|
return m_attributes.Count-1;
|
||
|
|
}
|
||
|
|
|
||
|
|
internal void ReplaceAttribute(int index, String key, String value)
|
||
|
|
{
|
||
|
|
m_attributes[index] = new DictionaryEntry(key, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if _DEBUG
|
||
|
|
[System.Diagnostics.Conditional("_LOGGING")]
|
||
|
|
internal void Trace()
|
||
|
|
{
|
||
|
|
BCLDebug.Trace("REMOTE","************ConfigNode************");
|
||
|
|
BCLDebug.Trace("REMOTE","Name = "+m_name);
|
||
|
|
if (m_value != null)
|
||
|
|
BCLDebug.Trace("REMOTE","Value = "+m_value);
|
||
|
|
if (m_parent != null)
|
||
|
|
BCLDebug.Trace("REMOTE","Parent = "+m_parent.Name);
|
||
|
|
for (int i=0; i<m_attributes.Count; i++)
|
||
|
|
{
|
||
|
|
DictionaryEntry de = (DictionaryEntry)m_attributes[i];
|
||
|
|
BCLDebug.Trace("REMOTE","Key = "+de.Key+" Value = "+de.Value);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i=0; i<m_children.Count; i++)
|
||
|
|
{
|
||
|
|
((ConfigNode)m_children[i]).Trace();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|