OutputScopeManager.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / OutputScopeManager.cs / 1 / OutputScopeManager.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.Xsl.XsltOld { 
    using Res = System.Xml.Utils.Res;
    using System; 
    using System.Globalization;
    using System.Diagnostics;
    using System.Xml;
 
    internal class OutputScopeManager {
        private const int STACK_INCREMENT = 10; 
 
        private HWStack         elementScopesStack;
        private string          defaultNS; 
        private OutKeywords     atoms;
        private XmlNameTable    nameTable;
        private int             prefixIndex;
 
        internal string DefaultNamespace {
            get { return this.defaultNS; } 
        } 

        internal OutputScope CurrentElementScope { 
            get {
                Debug.Assert(this.elementScopesStack.Peek() != null); // We adding rootElementScope to garantee this
                return (OutputScope) this.elementScopesStack.Peek();
            } 
        }
 
        internal XmlSpace XmlSpace { 
            get { return CurrentElementScope.Space; }
        } 

        internal string XmlLang {
            get { return CurrentElementScope.Lang; }
        } 

        internal OutputScopeManager(XmlNameTable nameTable, OutKeywords atoms) { 
            Debug.Assert(nameTable != null); 
            Debug.Assert(atoms     != null);
 
            this.elementScopesStack = new HWStack(STACK_INCREMENT);
            this.nameTable          = nameTable;
            this.atoms              = atoms;
            this.defaultNS          = this.atoms.Empty; 

            // We always adding rootElementScope to garantee that CurrentElementScope != null 
            // This context is active between PI and first element for example 
            OutputScope rootElementScope = (OutputScope) this.elementScopesStack.Push();
            if(rootElementScope == null) { 
                rootElementScope = new OutputScope();
                this.elementScopesStack.AddToTop(rootElementScope);
            }
            rootElementScope.Init(string.Empty, string.Empty, string.Empty, /*space:*/XmlSpace.None, /*lang:*/string.Empty, /*mixed:*/false); 
        }
 
        internal void PushNamespace(string prefix, string nspace) { 
            Debug.Assert(prefix != null);
            Debug.Assert(nspace != null); 
            CurrentElementScope.AddNamespace(prefix, nspace, this.defaultNS);

            if (prefix == null || prefix.Length == 0) {
                this.defaultNS = nspace; 
            }
        } 
 
        internal void PushScope(string name, string nspace, string prefix) {
            Debug.Assert(name != null); 
            Debug.Assert(nspace != null);
            Debug.Assert(prefix != null);
            OutputScope parentScope  = CurrentElementScope;
            OutputScope elementScope = (OutputScope) this.elementScopesStack.Push(); 

            if (elementScope == null) { 
                elementScope = new OutputScope(); 
                this.elementScopesStack.AddToTop(elementScope);
            } 

            Debug.Assert(elementScope != null);
            elementScope.Init(name, nspace, prefix, parentScope.Space, parentScope.Lang, parentScope.Mixed);
        } 

        internal void PopScope() { 
            OutputScope elementScope = (OutputScope) this.elementScopesStack.Pop(); 

            Debug.Assert(elementScope != null); // We adding rootElementScope to garantee this 

            for (NamespaceDecl scope = elementScope.Scopes; scope != null; scope = scope.Next) {
                this.defaultNS = scope.PrevDefaultNsUri;
            } 
        }
 
        internal string ResolveNamespace(string prefix) { 
            bool thisScope;
            return ResolveNamespace(prefix, out thisScope); 
        }

        internal string ResolveNamespace(string prefix, out bool thisScope) {
            Debug.Assert(prefix != null); 
            thisScope = true;
 
            if (prefix == null || prefix.Length == 0) { 
                return this.defaultNS;
            } 
            else {
                if (Keywords.Equals(prefix, this.atoms.Xml)) {
                    return this.atoms.XmlNamespace;
                } 
                else if (Keywords.Equals(prefix, this.atoms.Xmlns)) {
                    return this.atoms.XmlnsNamespace; 
                } 

                for (int i = this.elementScopesStack.Length - 1; i >= 0; i --) { 
                    Debug.Assert(this.elementScopesStack[i] is OutputScope);
                    OutputScope elementScope = (OutputScope) this.elementScopesStack[i];

                    string nspace = elementScope.ResolveAtom(prefix); 
                    if (nspace != null) {
                        thisScope = (i == this.elementScopesStack.Length - 1); 
                        return nspace; 
                    }
                } 
            }

            return null;
        } 

        internal bool FindPrefix(string nspace, out string prefix) { 
            Debug.Assert(nspace != null); 
            for (int i = this.elementScopesStack.Length - 1; 0 <= i; i--) {
                Debug.Assert(this.elementScopesStack[i] is OutputScope); 

                OutputScope elementScope = (OutputScope) this.elementScopesStack[i];
                string      pfx          = null;
                if (elementScope.FindPrefix(nspace, out pfx)) { 
                    string testNspace = ResolveNamespace(pfx);
                    if(testNspace != null && Keywords.Equals(testNspace, nspace)) { 
                        prefix = pfx; 
                        return true;
                    } 
                    else {
                        break;
                    }
                } 
            }
            prefix = null; 
            return false; 
        }
 
        internal string GeneratePrefix(string format) {
            string prefix;

            do { 
                prefix = String.Format(CultureInfo.InvariantCulture, format, this.prefixIndex ++);
            }while(this.nameTable.Get(prefix) != null); 
 
            return this.nameTable.Add(prefix);
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
 
namespace System.Xml.Xsl.XsltOld { 
    using Res = System.Xml.Utils.Res;
    using System; 
    using System.Globalization;
    using System.Diagnostics;
    using System.Xml;
 
    internal class OutputScopeManager {
        private const int STACK_INCREMENT = 10; 
 
        private HWStack         elementScopesStack;
        private string          defaultNS; 
        private OutKeywords     atoms;
        private XmlNameTable    nameTable;
        private int             prefixIndex;
 
        internal string DefaultNamespace {
            get { return this.defaultNS; } 
        } 

        internal OutputScope CurrentElementScope { 
            get {
                Debug.Assert(this.elementScopesStack.Peek() != null); // We adding rootElementScope to garantee this
                return (OutputScope) this.elementScopesStack.Peek();
            } 
        }
 
        internal XmlSpace XmlSpace { 
            get { return CurrentElementScope.Space; }
        } 

        internal string XmlLang {
            get { return CurrentElementScope.Lang; }
        } 

        internal OutputScopeManager(XmlNameTable nameTable, OutKeywords atoms) { 
            Debug.Assert(nameTable != null); 
            Debug.Assert(atoms     != null);
 
            this.elementScopesStack = new HWStack(STACK_INCREMENT);
            this.nameTable          = nameTable;
            this.atoms              = atoms;
            this.defaultNS          = this.atoms.Empty; 

            // We always adding rootElementScope to garantee that CurrentElementScope != null 
            // This context is active between PI and first element for example 
            OutputScope rootElementScope = (OutputScope) this.elementScopesStack.Push();
            if(rootElementScope == null) { 
                rootElementScope = new OutputScope();
                this.elementScopesStack.AddToTop(rootElementScope);
            }
            rootElementScope.Init(string.Empty, string.Empty, string.Empty, /*space:*/XmlSpace.None, /*lang:*/string.Empty, /*mixed:*/false); 
        }
 
        internal void PushNamespace(string prefix, string nspace) { 
            Debug.Assert(prefix != null);
            Debug.Assert(nspace != null); 
            CurrentElementScope.AddNamespace(prefix, nspace, this.defaultNS);

            if (prefix == null || prefix.Length == 0) {
                this.defaultNS = nspace; 
            }
        } 
 
        internal void PushScope(string name, string nspace, string prefix) {
            Debug.Assert(name != null); 
            Debug.Assert(nspace != null);
            Debug.Assert(prefix != null);
            OutputScope parentScope  = CurrentElementScope;
            OutputScope elementScope = (OutputScope) this.elementScopesStack.Push(); 

            if (elementScope == null) { 
                elementScope = new OutputScope(); 
                this.elementScopesStack.AddToTop(elementScope);
            } 

            Debug.Assert(elementScope != null);
            elementScope.Init(name, nspace, prefix, parentScope.Space, parentScope.Lang, parentScope.Mixed);
        } 

        internal void PopScope() { 
            OutputScope elementScope = (OutputScope) this.elementScopesStack.Pop(); 

            Debug.Assert(elementScope != null); // We adding rootElementScope to garantee this 

            for (NamespaceDecl scope = elementScope.Scopes; scope != null; scope = scope.Next) {
                this.defaultNS = scope.PrevDefaultNsUri;
            } 
        }
 
        internal string ResolveNamespace(string prefix) { 
            bool thisScope;
            return ResolveNamespace(prefix, out thisScope); 
        }

        internal string ResolveNamespace(string prefix, out bool thisScope) {
            Debug.Assert(prefix != null); 
            thisScope = true;
 
            if (prefix == null || prefix.Length == 0) { 
                return this.defaultNS;
            } 
            else {
                if (Keywords.Equals(prefix, this.atoms.Xml)) {
                    return this.atoms.XmlNamespace;
                } 
                else if (Keywords.Equals(prefix, this.atoms.Xmlns)) {
                    return this.atoms.XmlnsNamespace; 
                } 

                for (int i = this.elementScopesStack.Length - 1; i >= 0; i --) { 
                    Debug.Assert(this.elementScopesStack[i] is OutputScope);
                    OutputScope elementScope = (OutputScope) this.elementScopesStack[i];

                    string nspace = elementScope.ResolveAtom(prefix); 
                    if (nspace != null) {
                        thisScope = (i == this.elementScopesStack.Length - 1); 
                        return nspace; 
                    }
                } 
            }

            return null;
        } 

        internal bool FindPrefix(string nspace, out string prefix) { 
            Debug.Assert(nspace != null); 
            for (int i = this.elementScopesStack.Length - 1; 0 <= i; i--) {
                Debug.Assert(this.elementScopesStack[i] is OutputScope); 

                OutputScope elementScope = (OutputScope) this.elementScopesStack[i];
                string      pfx          = null;
                if (elementScope.FindPrefix(nspace, out pfx)) { 
                    string testNspace = ResolveNamespace(pfx);
                    if(testNspace != null && Keywords.Equals(testNspace, nspace)) { 
                        prefix = pfx; 
                        return true;
                    } 
                    else {
                        break;
                    }
                } 
            }
            prefix = null; 
            return false; 
        }
 
        internal string GeneratePrefix(string format) {
            string prefix;

            do { 
                prefix = String.Format(CultureInfo.InvariantCulture, format, this.prefixIndex ++);
            }while(this.nameTable.Get(prefix) != null); 
 
            return this.nameTable.Add(prefix);
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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