Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / CfgParser.cs / 1 / CfgParser.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: CfgParser ** ** ** Purpose: XMLParser and Tree builder internal to BCL ** ** ===========================================================*/ // // These are managed definitions of interfaces used in the shim for XML Parsing // If you make any change please make a correspoding change in \src\dlls\shim\managedhelper.h // // // namespace System { using System.Runtime.InteropServices; using System.Collections; using System.Runtime.CompilerServices; using System.Security.Permissions; using System.Security; using System.Globalization; using System.IO; using System.Runtime.Versioning; [Serializable] internal enum ConfigEvents { StartDocument = 0, StartDTD = StartDocument + 1, EndDTD = StartDTD + 1, StartDTDSubset = EndDTD + 1, EndDTDSubset = StartDTDSubset + 1, EndProlog = EndDTDSubset + 1, StartEntity = EndProlog + 1, EndEntity = StartEntity + 1, EndDocument = EndEntity + 1, DataAvailable = EndDocument + 1, LastEvent = DataAvailable } [Serializable] internal enum ConfigNodeType { Element = 1, Attribute = Element + 1, Pi = Attribute + 1, XmlDecl = Pi + 1, DocType = XmlDecl + 1, DTDAttribute = DocType + 1, EntityDecl = DTDAttribute + 1, ElementDecl = EntityDecl + 1, AttlistDecl = ElementDecl + 1, Notation = AttlistDecl + 1, Group = Notation + 1, IncludeSect = Group + 1, PCData = IncludeSect + 1, CData = PCData + 1, IgnoreSect = CData + 1, Comment = IgnoreSect + 1, EntityRef = Comment + 1, Whitespace = EntityRef + 1, Name = Whitespace + 1, NMToken = Name + 1, String = NMToken + 1, Peref = String + 1, Model = Peref + 1, ATTDef = Model + 1, ATTType = ATTDef + 1, ATTPresence = ATTType + 1, DTDSubset = ATTPresence + 1, LastNodeType = DTDSubset + 1 } [Serializable] internal enum ConfigNodeSubType { Version = (int)ConfigNodeType.LastNodeType, Encoding = Version + 1, Standalone = Encoding + 1, NS = Standalone + 1, XMLSpace = NS + 1, XMLLang = XMLSpace + 1, System = XMLLang + 1, Public = System + 1, NData = Public + 1, AtCData = NData + 1, AtId = AtCData + 1, AtIdref = AtId + 1, AtIdrefs = AtIdref + 1, AtEntity = AtIdrefs + 1, AtEntities = AtEntity + 1, AtNmToken = AtEntities + 1, AtNmTokens = AtNmToken + 1, AtNotation = AtNmTokens + 1, AtRequired = AtNotation + 1, AtImplied = AtRequired + 1, AtFixed = AtImplied + 1, PentityDecl = AtFixed + 1, Empty = PentityDecl + 1, Any = Empty + 1, Mixed = Any + 1, Sequence = Mixed + 1, Choice = Sequence + 1, Star = Choice + 1, Plus = Star + 1, Questionmark = Plus + 1, LastSubNodeType = Questionmark + 1 } [Guid("afd0d21f-72f8-4819-99ad-3f255ee5006b"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)] internal interface IConfigHandler { void NotifyEvent(ConfigEvents nEvent); void BeginChildren(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)] String text, int textLength, int prefixLength); void EndChildren(int fEmpty, int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)] String text, int textLength, int prefixLength); void Error(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)]String text, int textLength, int prefixLength); void CreateNode(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)]String text, int textLength, int prefixLength); void CreateAttribute(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)]String text, int textLength, int prefixLength); } internal static class ConfigServer { [MethodImplAttribute(MethodImplOptions.InternalCall)] internal static extern void RunParser(IConfigHandler factory, String fileName); } // Class used to build a DOM like tree of parsed XML internal class ConfigTreeParser : IConfigHandler { ConfigNode rootNode = null; ConfigNode currentNode = null; String lastProcessed = null; String fileName = null; int attributeEntry; String key = null; String [] treeRootPath = null; // element to start tree bool parsing = false; int depth = 0; int pathDepth = 0; int searchDepth = 0; bool bNoSearchPath = false; // NOTE: This parser takes a path eg. /configuration/system.runtime.remoting // and will return a node which matches this. [ResourceExposure(ResourceScope.Machine)] [ResourceConsumption(ResourceScope.Machine)] internal ConfigNode Parse(String fileName, String configPath) { return Parse(fileName, configPath, false); } [ResourceExposure(ResourceScope.Machine)] [ResourceConsumption(ResourceScope.Machine)] internal ConfigNode Parse(String fileName, String configPath, bool skipSecurityStuff) { if (fileName == null) throw new ArgumentNullException("fileName"); this.fileName = fileName; if (configPath[0] == '/'){ treeRootPath = configPath.Substring(1).Split('/'); pathDepth = treeRootPath.Length - 1; bNoSearchPath = false; } else{ treeRootPath = new String[1]; treeRootPath[0] = configPath; bNoSearchPath = true; } if (!skipSecurityStuff) { (new FileIOPermission( FileIOPermissionAccess.Read, System.IO.Path.GetFullPathInternal( fileName ) )).Demand(); } (new SecurityPermission(SecurityPermissionFlag.UnmanagedCode)).Assert(); try { ConfigServer.RunParser(this, fileName); } catch(FileNotFoundException) { throw; // Pass these through unadulterated. } catch(DirectoryNotFoundException) { throw; // Pass these through unadulterated. } catch(UnauthorizedAccessException) { throw; } catch(FileLoadException) { throw; } catch(Exception inner) { throw new ApplicationException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("XML_Syntax_InvalidSyntaxInFile"), fileName, lastProcessed), inner); } catch { throw new ApplicationException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("XML_Syntax_InvalidSyntaxInFile"), fileName, lastProcessed)); } return rootNode; } public void NotifyEvent(ConfigEvents nEvent) { BCLDebug.Trace("REMOTE", "NotifyEvent "+((Enum)nEvent).ToString()+"\n"); } public void BeginChildren(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)] String text, int textLength, int prefixLength) { //Trace("BeginChildren",size,subType,nType,terminal,text,textLength,prefixLength,0); if (!parsing && (!bNoSearchPath && depth == (searchDepth + 1) && String.Compare(text, treeRootPath[searchDepth], StringComparison.Ordinal) == 0)) { searchDepth++; } } public void EndChildren(int fEmpty, int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)] String text, int textLength, int prefixLength) { lastProcessed = ""+text+">"; if (parsing) { //Trace("EndChildren",size,subType,nType,terminal,text,textLength,prefixLength,fEmpty); if (currentNode == rootNode) { // End of section of tree which is parsed parsing = false; } currentNode = currentNode.Parent; } else if (nType == ConfigNodeType.Element){ if(depth == searchDepth && String.Compare(text, treeRootPath[searchDepth - 1], StringComparison.Ordinal) == 0) { searchDepth--; depth--; } else depth--; } } public void Error(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)]String text, int textLength, int prefixLength) { //Trace("Error",size,subType,nType,terminal,text,textLength,prefixLength,0); } public void CreateNode(int size, ConfigNodeSubType subType, ConfigNodeType nType, int terminal, [MarshalAs(UnmanagedType.LPWStr)]String text, int textLength, int prefixLength) { //Trace("CreateNode",size,subType,nType,terminal,text,textLength,prefixLength,0); if (nType == ConfigNodeType.Element) { // New Node lastProcessed = "<"+text+">"; 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 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 throw new ApplicationException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("XML_Syntax_InvalidSyntaxInFile"),fileName,lastProcessed)); } } [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"); } } // Node in Tree produced by ConfigTreeParser internal class ConfigNode { String m_name = null; String m_value = null; ConfigNode m_parent = null; ArrayList m_children = new ArrayList(5); ArrayList m_attributes = new ArrayList(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 ArrayList Children { get {return m_children;} } internal ArrayList 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); } [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; iSyntaxHighlighter.all()
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