Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / Configuration / UriSectionReader.cs / 1305376 / UriSectionReader.cs
using System; using System.Collections.Generic; using System.Text; using System.Net; using System.Security.Permissions; using System.IO; using System.Xml; using System.Security; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; namespace System.Configuration { // This class is used to read thesection from a config file directly, without using System.Configuration internal class UriSectionReader { private const string rootElementName = "configuration"; private string configFilePath; private XmlReader reader; // result data after parsing the configuration section private UriSectionData sectionData; private UriSectionReader(string configFilePath, UriSectionData parentData) { Debug.Assert(configFilePath != null, "'configFilePath' must not be null"); this.configFilePath = configFilePath; this.sectionData = new UriSectionData(); if (parentData != null) { sectionData.IriParsing = parentData.IriParsing; sectionData.IdnScope = parentData.IdnScope; foreach (KeyValuePair schemeSetting in parentData.SchemeSettings) { sectionData.SchemeSettings.Add(schemeSetting.Key, schemeSetting.Value); } } } public static UriSectionData Read(string configFilePath) { return Read(configFilePath, null); } public static UriSectionData Read(string configFilePath, UriSectionData parentData) { UriSectionReader reader = new UriSectionReader(configFilePath, parentData); return reader.GetSectionData(); } [SuppressMessage("Microsoft.Security","CA2106:SecureAsserts", Justification="Must Assert read permission for only this file")] [SuppressMessage("Microsoft.Security","CA2103:ReviewImperativeSecurity", Justification="Must Assert read permission for only this file")] private UriSectionData GetSectionData() { // Assert read permission for only this file. new FileIOPermission(FileIOPermissionAccess.Read, configFilePath).Assert(); try { if (File.Exists(configFilePath)) { using (FileStream configFile = new FileStream(configFilePath, FileMode.Open, FileAccess.Read)) { XmlReaderSettings settings = new XmlReaderSettings(); settings.IgnoreComments = true; settings.IgnoreWhitespace = true; settings.IgnoreProcessingInstructions = true; using (reader = XmlReader.Create(configFile, settings)) { if (ReadConfiguration()) { return sectionData; } } } } } catch (Exception) { // In this case we really want to catch all exceptions: Uri never threw, therefore we can't // start throwing exceptions now when reading the configuration. } finally { FileIOPermission.RevertAssert(); } return null; } private bool ReadConfiguration() { if (!ReadToUriSection()) { return false; } while (reader.Read()) { if (IsEndElement(CommonConfigurationStrings.UriSectionName)) { return true; } if (reader.NodeType != XmlNodeType.Element) { return false; } string currentElementName = reader.Name; if (AreEqual(currentElementName, CommonConfigurationStrings.IriParsing)) { if (ReadIriParsing()) { continue; } } else if (AreEqual(currentElementName, CommonConfigurationStrings.Idn)) { if (ReadIdnScope()) { continue; } } else if (AreEqual(currentElementName, CommonConfigurationStrings.SchemeSettings)) { if (ReadSchemeSettings()) { continue; } } // we found an unknown element in section. return false; } // we reached EOF, but the will end up here. return false; } // reached EOF without hitting return false; } private static bool AreEqual(string value1, string value2) { return string.Compare(value1, value2, StringComparison.OrdinalIgnoreCase) == 0; } private bool ReadAddSchemeSetting() { string schemeValue = reader.GetAttribute(CommonConfigurationStrings.SchemeName); string genericUriParserOptionsValue = reader.GetAttribute( CommonConfigurationStrings.GenericUriParserOptions); if (string.IsNullOrEmpty(schemeValue) || string.IsNullOrEmpty(genericUriParserOptionsValue)) { return false; } try { GenericUriParserOptions genericUriParserOptions = (GenericUriParserOptions)Enum.Parse( typeof(GenericUriParserOptions), genericUriParserOptionsValue); SchemeSettingInternal schemeSetting = new SchemeSettingInternal(schemeValue, genericUriParserOptions); sectionData.SchemeSettings[schemeSetting.Name] = schemeSetting; return true; } catch (ArgumentException) { return false; } } private bool ReadRemoveSchemeSetting() { string scheme = reader.GetAttribute(CommonConfigurationStrings.SchemeName); if (string.IsNullOrEmpty(scheme)) { return false; } // ignore result value. It's ok if the scheme is not in the collection. sectionData.SchemeSettings.Remove(scheme); return true; } private void ClearSchemeSetting() { // no attributes to read, just clear collection sectionData.SchemeSettings.Clear(); } private bool IsEndElement(string elementName) { return (reader.NodeType == XmlNodeType.EndElement) && string.Compare(reader.Name, elementName, StringComparison.OrdinalIgnoreCase) == 0; } private bool ReadToUriSection() { if (!reader.ReadToFollowing(rootElementName)) { return false; } if (reader.Depth != 0) { // 'configuration' must be the root element. If not, this is not a valid config file. return false; } // To be entirely correct, we should not look fornode didn't have a final node return false; } private bool ReadIriParsing() { string attributeValue = reader.GetAttribute(CommonConfigurationStrings.Enabled); bool configIriParsingValue; if (bool.TryParse(attributeValue, out configIriParsingValue)) { sectionData.IriParsing = configIriParsingValue; return true; } else { return false; } } private bool ReadIdnScope() { string attributeValue = reader.GetAttribute(CommonConfigurationStrings.Enabled); try { sectionData.IdnScope = (UriIdnScope)Enum.Parse(typeof(UriIdnScope), attributeValue, true); return true; } catch (ArgumentException) { return false; } } private bool ReadSchemeSettings() { while (reader.Read()) { if (IsEndElement(CommonConfigurationStrings.SchemeSettings)) { return true; } if (reader.NodeType != XmlNodeType.Element) { return false; } string currentElementName = reader.Name; if (AreEqual(currentElementName, SchemeSettingElementCollection.AddItemName)) { if (ReadAddSchemeSetting()) { continue; } } else if (AreEqual(currentElementName, SchemeSettingElementCollection.RemoveItemName)) { if (ReadRemoveSchemeSetting()) { continue; } } else if (AreEqual(currentElementName, SchemeSettingElementCollection.ClearItemsName)) { ClearSchemeSetting(); continue; } // unknown element found, e.g. if is missing, readingsection, but we should look for the name // specified in the / node for type 'System.Configuration.Uri'. // An admin/user can decide to rename the uri section to whatever he wants. However, since // all NCL (and some other) configuration implementations look for the hard-coded string, // we don't change the current behavior. do { // 'uri' must be at depth 1, otherwise it is not our section, but a custom one. if (!reader.ReadToFollowing(CommonConfigurationStrings.UriSectionName)) { return false; } } while (reader.Depth != 1); return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CompilerParameters.cs
- _Win32.cs
- Psha1DerivedKeyGeneratorHelper.cs
- SmtpMail.cs
- HttpClientCertificate.cs
- ObjectDataSourceDisposingEventArgs.cs
- TypeListConverter.cs
- Cursor.cs
- ObjectComplexPropertyMapping.cs
- SqlDataSourceCache.cs
- ICspAsymmetricAlgorithm.cs
- SystemIPInterfaceProperties.cs
- ContractCodeDomInfo.cs
- updateconfighost.cs
- TemplatePartAttribute.cs
- TimeSpanHelper.cs
- DateTimeHelper.cs
- TabItemWrapperAutomationPeer.cs
- Repeater.cs
- CorePropertiesFilter.cs
- GradientSpreadMethodValidation.cs
- EdmProviderManifest.cs
- DisposableCollectionWrapper.cs
- OleDbErrorCollection.cs
- OrderingExpression.cs
- WindowsUserNameSecurityTokenAuthenticator.cs
- SqlDataSource.cs
- Soap.cs
- XamlWrappingReader.cs
- SqlParameterizer.cs
- TextRange.cs
- ToolStripRenderer.cs
- DocumentViewerAutomationPeer.cs
- CompileXomlTask.cs
- VirtualizingStackPanel.cs
- ToolStripDropDownClosingEventArgs.cs
- PreProcessInputEventArgs.cs
- View.cs
- DataGridViewHitTestInfo.cs
- ToolStripGripRenderEventArgs.cs
- OdbcConnectionString.cs
- SatelliteContractVersionAttribute.cs
- RelativeSource.cs
- TextBounds.cs
- MdImport.cs
- ValidationError.cs
- SystemEvents.cs
- TransactionCache.cs
- DoubleLinkList.cs
- LineUtil.cs
- ContextMenuStripGroup.cs
- RegexRunner.cs
- Subtract.cs
- Glyph.cs
- TypedReference.cs
- AlternationConverter.cs
- AudioDeviceOut.cs
- OptimizerPatterns.cs
- EntityContainer.cs
- ThrowHelper.cs
- FileDialog_Vista.cs
- DataSourceCache.cs
- XmlTextReader.cs
- TabletDevice.cs
- SqlClientWrapperSmiStreamChars.cs
- XmlSchemaComplexContentRestriction.cs
- LockedBorderGlyph.cs
- GeometryCollection.cs
- ProtocolElement.cs
- FormCollection.cs
- TextRangeSerialization.cs
- DescendentsWalkerBase.cs
- GroupStyle.cs
- Size.cs
- AnnotationDocumentPaginator.cs
- XmlSerializerAssemblyAttribute.cs
- TreeNodeCollection.cs
- SchemaImporterExtension.cs
- SingleConverter.cs
- Geometry3D.cs
- QueryCacheEntry.cs
- WebPartVerbsEventArgs.cs
- DataGridPagingPage.cs
- QueryableFilterRepeater.cs
- QilSortKey.cs
- WhiteSpaceTrimStringConverter.cs
- IntellisenseTextBox.designer.cs
- Nullable.cs
- BounceEase.cs
- ListContractAdapter.cs
- RichTextBoxConstants.cs
- PolygonHotSpot.cs
- PnrpPermission.cs
- XPathNodeList.cs
- RijndaelManagedTransform.cs
- DropDownButton.cs
- Form.cs
- NavigationService.cs
- RowUpdatedEventArgs.cs
- ConfigurationManager.cs