Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / xsp / System / Web / Util / Wildcard.cs / 1 / Wildcard.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Wildcard * * wildcard wrappers for Regex * * (1) Wildcard does straight string wildcarding with no path separator awareness * (2) WildcardUrl recognizes that forward / slashes are special and can't match * or ? * (3) WildcardDos recognizes that backward \ and : are special and can't match * or ? * * Copyright (c) 1999, Microsoft Corporation */ namespace System.Web.Util { using System.Runtime.Serialization.Formatters; using System.Text.RegularExpressions; /* * Wildcard * * Wildcard patterns have three metacharacters: * * A ? is equivalent to . * A * is equivalent to .* * A , is equivalent to | * * Note that by each alternative is surrounded by \A...\z to anchor * at the edges of the string. */ internal class Wildcard { #if NOT_USED internal /*public*/ Wildcard(String pattern) : this (pattern, false) { } #endif internal /*public*/ Wildcard(String pattern, bool caseInsensitive) { _pattern = pattern; _caseInsensitive = caseInsensitive; } internal String _pattern; internal bool _caseInsensitive; internal Regex _regex; protected static Regex metaRegex = new Regex("[\\+\\{\\\\\\[\\|\\(\\)\\.\\^\\$]"); protected static Regex questRegex = new Regex("\\?"); protected static Regex starRegex = new Regex("\\*"); protected static Regex commaRegex = new Regex(","); protected static Regex slashRegex = new Regex("(?=/)"); protected static Regex backslashRegex = new Regex("(?=[\\\\:])"); /* * IsMatch returns true if the input is an exact match for the * wildcard pattern. */ internal /*public*/ bool IsMatch(String input) { EnsureRegex(); bool result = _regex.IsMatch(input); return result; } #if DONT_COMPILE internal /*public*/ String Pattern { get { return _pattern; } } #endif /* * Builds the matching regex when needed */ protected void EnsureRegex() { // threadsafe without protection because of gc if (_regex != null) return; _regex = RegexFromWildcard(_pattern, _caseInsensitive); } /* * Basic wildcard -> Regex conversion, no slashes */ protected virtual Regex RegexFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options = RegexOptions.None; // match right-to-left (for speed) if the pattern starts with a * if (pattern.Length > 0 && pattern[0] == '*') options = RegexOptions.RightToLeft | RegexOptions.Singleline; else options = RegexOptions.Singleline; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "."); pattern = starRegex.Replace(pattern, ".*"); pattern = commaRegex.Replace(pattern, "\\z|\\A"); // anchor the pattern at beginning and end, and return the regex return new Regex("\\A" + pattern + "\\z", options); } } abstract internal class WildcardPath : Wildcard { #if NOT_USED internal /*public*/ WildcardPath(String pattern) : base(pattern) { } private Regex[][] _dirs; #endif internal /*public*/ WildcardPath(String pattern, bool caseInsensitive) : base(pattern, caseInsensitive) { } private Regex _suffix; /* * IsSuffix returns true if a suffix of the input is an exact * match for the wildcard pattern. */ internal /*public*/ bool IsSuffix(String input) { EnsureSuffix(); return _suffix.IsMatch(input); } #if NOT_USED /* * AllowPrefix returns true if the input is an exact match for * a prefix-directory of the wildcard pattern (i.e., if it * is possible to match the wildcard pattern by adding * more subdirectories or a filename at the end of the path). */ internal /*public*/ bool AllowPrefix(String prefix) { String[] dirs = SplitDirs(prefix); EnsureDirs(); for (int i = 0; i < _dirs.Length; i++) { // pattern is shorter than prefix: reject if (_dirs[i].Length < dirs.Length) goto NextAlt; for (int j = 0; j < dirs.Length; j++) { // the jth directory doesn't match; path is not a prefix if (!_dirs[i][j].IsMatch(dirs[j])) goto NextAlt; } // one alternative passed: we pass. return true; NextAlt: ; } return false; } /* * Builds the matching regex array when needed */ protected void EnsureDirs() { // threadsafe without protection because of gc if (_dirs != null) return; _dirs = DirsFromWildcard(_pattern); } #endif /* * Builds the matching regex when needed */ protected void EnsureSuffix() { // threadsafe without protection because of gc if (_suffix != null) return; _suffix = SuffixFromWildcard(_pattern, _caseInsensitive); } /* * Specialize for forward-slash and backward-slash cases */ protected abstract Regex SuffixFromWildcard(String pattern, bool caseInsensitive); protected abstract Regex[][] DirsFromWildcard(String pattern); protected abstract String[] SplitDirs(String input); } /* * WildcardUrl * * The twist is that * and ? cannot match forward slashes, * and we can do an exact suffix match that starts after * any /, and we can also do a prefix prune. */ internal class WildcardUrl : WildcardPath { #if NOT_USED internal /*public*/ WildcardUrl(String pattern) : base(pattern) { } #endif internal /*public*/ WildcardUrl(String pattern, bool caseInsensitive) : base(pattern, caseInsensitive) { } protected override String[] SplitDirs(String input) { return slashRegex.Split(input); } protected override Regex RegexFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options; // match right-to-left (for speed) if the pattern starts with a * if (pattern.Length > 0 && pattern[0] == '*') options = RegexOptions.RightToLeft; else options = RegexOptions.None; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "[^/]"); pattern = starRegex.Replace(pattern, "[^/]*"); pattern = commaRegex.Replace(pattern, "\\z|\\A"); // anchor the pattern at beginning and end, and return the regex return new Regex("\\A" + pattern + "\\z", options); } protected override Regex SuffixFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options; // match right-to-left (for speed) options = RegexOptions.RightToLeft; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "[^/]"); pattern = starRegex.Replace(pattern, "[^/]*"); pattern = commaRegex.Replace(pattern, "\\z|(?:\\A|(?<=/))"); // anchor the pattern at beginning and end, and return the regex return new Regex("(?:\\A|(?<=/))" + pattern + "\\z", options); } protected override Regex[][] DirsFromWildcard(String pattern) { String[] alts = commaRegex.Split(pattern); Regex[][] dirs = new Regex[alts.Length][]; for (int i = 0; i < alts.Length; i++) { String[] dirpats = slashRegex.Split(alts[i]); Regex[] dirregex = new Regex[dirpats.Length]; if (alts.Length == 1 && dirpats.Length == 1) { // common case: no commas, no slashes: dir regex is same as top regex. EnsureRegex(); dirregex[0] = _regex; } else { for (int j = 0; j < dirpats.Length; j++) { dirregex[j] = RegexFromWildcard(dirpats[j], _caseInsensitive); } } dirs[i] = dirregex; } return dirs; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Wildcard * * wildcard wrappers for Regex * * (1) Wildcard does straight string wildcarding with no path separator awareness * (2) WildcardUrl recognizes that forward / slashes are special and can't match * or ? * (3) WildcardDos recognizes that backward \ and : are special and can't match * or ? * * Copyright (c) 1999, Microsoft Corporation */ namespace System.Web.Util { using System.Runtime.Serialization.Formatters; using System.Text.RegularExpressions; /* * Wildcard * * Wildcard patterns have three metacharacters: * * A ? is equivalent to . * A * is equivalent to .* * A , is equivalent to | * * Note that by each alternative is surrounded by \A...\z to anchor * at the edges of the string. */ internal class Wildcard { #if NOT_USED internal /*public*/ Wildcard(String pattern) : this (pattern, false) { } #endif internal /*public*/ Wildcard(String pattern, bool caseInsensitive) { _pattern = pattern; _caseInsensitive = caseInsensitive; } internal String _pattern; internal bool _caseInsensitive; internal Regex _regex; protected static Regex metaRegex = new Regex("[\\+\\{\\\\\\[\\|\\(\\)\\.\\^\\$]"); protected static Regex questRegex = new Regex("\\?"); protected static Regex starRegex = new Regex("\\*"); protected static Regex commaRegex = new Regex(","); protected static Regex slashRegex = new Regex("(?=/)"); protected static Regex backslashRegex = new Regex("(?=[\\\\:])"); /* * IsMatch returns true if the input is an exact match for the * wildcard pattern. */ internal /*public*/ bool IsMatch(String input) { EnsureRegex(); bool result = _regex.IsMatch(input); return result; } #if DONT_COMPILE internal /*public*/ String Pattern { get { return _pattern; } } #endif /* * Builds the matching regex when needed */ protected void EnsureRegex() { // threadsafe without protection because of gc if (_regex != null) return; _regex = RegexFromWildcard(_pattern, _caseInsensitive); } /* * Basic wildcard -> Regex conversion, no slashes */ protected virtual Regex RegexFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options = RegexOptions.None; // match right-to-left (for speed) if the pattern starts with a * if (pattern.Length > 0 && pattern[0] == '*') options = RegexOptions.RightToLeft | RegexOptions.Singleline; else options = RegexOptions.Singleline; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "."); pattern = starRegex.Replace(pattern, ".*"); pattern = commaRegex.Replace(pattern, "\\z|\\A"); // anchor the pattern at beginning and end, and return the regex return new Regex("\\A" + pattern + "\\z", options); } } abstract internal class WildcardPath : Wildcard { #if NOT_USED internal /*public*/ WildcardPath(String pattern) : base(pattern) { } private Regex[][] _dirs; #endif internal /*public*/ WildcardPath(String pattern, bool caseInsensitive) : base(pattern, caseInsensitive) { } private Regex _suffix; /* * IsSuffix returns true if a suffix of the input is an exact * match for the wildcard pattern. */ internal /*public*/ bool IsSuffix(String input) { EnsureSuffix(); return _suffix.IsMatch(input); } #if NOT_USED /* * AllowPrefix returns true if the input is an exact match for * a prefix-directory of the wildcard pattern (i.e., if it * is possible to match the wildcard pattern by adding * more subdirectories or a filename at the end of the path). */ internal /*public*/ bool AllowPrefix(String prefix) { String[] dirs = SplitDirs(prefix); EnsureDirs(); for (int i = 0; i < _dirs.Length; i++) { // pattern is shorter than prefix: reject if (_dirs[i].Length < dirs.Length) goto NextAlt; for (int j = 0; j < dirs.Length; j++) { // the jth directory doesn't match; path is not a prefix if (!_dirs[i][j].IsMatch(dirs[j])) goto NextAlt; } // one alternative passed: we pass. return true; NextAlt: ; } return false; } /* * Builds the matching regex array when needed */ protected void EnsureDirs() { // threadsafe without protection because of gc if (_dirs != null) return; _dirs = DirsFromWildcard(_pattern); } #endif /* * Builds the matching regex when needed */ protected void EnsureSuffix() { // threadsafe without protection because of gc if (_suffix != null) return; _suffix = SuffixFromWildcard(_pattern, _caseInsensitive); } /* * Specialize for forward-slash and backward-slash cases */ protected abstract Regex SuffixFromWildcard(String pattern, bool caseInsensitive); protected abstract Regex[][] DirsFromWildcard(String pattern); protected abstract String[] SplitDirs(String input); } /* * WildcardUrl * * The twist is that * and ? cannot match forward slashes, * and we can do an exact suffix match that starts after * any /, and we can also do a prefix prune. */ internal class WildcardUrl : WildcardPath { #if NOT_USED internal /*public*/ WildcardUrl(String pattern) : base(pattern) { } #endif internal /*public*/ WildcardUrl(String pattern, bool caseInsensitive) : base(pattern, caseInsensitive) { } protected override String[] SplitDirs(String input) { return slashRegex.Split(input); } protected override Regex RegexFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options; // match right-to-left (for speed) if the pattern starts with a * if (pattern.Length > 0 && pattern[0] == '*') options = RegexOptions.RightToLeft; else options = RegexOptions.None; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "[^/]"); pattern = starRegex.Replace(pattern, "[^/]*"); pattern = commaRegex.Replace(pattern, "\\z|\\A"); // anchor the pattern at beginning and end, and return the regex return new Regex("\\A" + pattern + "\\z", options); } protected override Regex SuffixFromWildcard(String pattern, bool caseInsensitive) { RegexOptions options; // match right-to-left (for speed) options = RegexOptions.RightToLeft; // case insensitivity if (caseInsensitive) options |= RegexOptions.IgnoreCase | RegexOptions.CultureInvariant; // Remove regex metacharacters pattern = metaRegex.Replace(pattern, "\\$0"); // Replace wildcard metacharacters with regex codes pattern = questRegex.Replace(pattern, "[^/]"); pattern = starRegex.Replace(pattern, "[^/]*"); pattern = commaRegex.Replace(pattern, "\\z|(?:\\A|(?<=/))"); // anchor the pattern at beginning and end, and return the regex return new Regex("(?:\\A|(?<=/))" + pattern + "\\z", options); } protected override Regex[][] DirsFromWildcard(String pattern) { String[] alts = commaRegex.Split(pattern); Regex[][] dirs = new Regex[alts.Length][]; for (int i = 0; i < alts.Length; i++) { String[] dirpats = slashRegex.Split(alts[i]); Regex[] dirregex = new Regex[dirpats.Length]; if (alts.Length == 1 && dirpats.Length == 1) { // common case: no commas, no slashes: dir regex is same as top regex. EnsureRegex(); dirregex[0] = _regex; } else { for (int j = 0; j < dirpats.Length; j++) { dirregex[j] = RegexFromWildcard(dirpats[j], _caseInsensitive); } } dirs[i] = dirregex; } return dirs; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DescendentsWalker.cs
- DocumentGridPage.cs
- UserControl.cs
- WorkflowServiceBehavior.cs
- EntityRecordInfo.cs
- TreePrinter.cs
- DecoderFallbackWithFailureFlag.cs
- AsynchronousChannel.cs
- Attribute.cs
- SemanticTag.cs
- SystemIPAddressInformation.cs
- Collection.cs
- DelegateBodyWriter.cs
- MultiDataTrigger.cs
- Authorization.cs
- DataListGeneralPage.cs
- SqlTriggerAttribute.cs
- SymLanguageVendor.cs
- SingleObjectCollection.cs
- AnnouncementEndpointElement.cs
- SiteIdentityPermission.cs
- MoveSizeWinEventHandler.cs
- NgenServicingAttributes.cs
- SpinWait.cs
- QilFactory.cs
- UnicodeEncoding.cs
- DefaultBinder.cs
- QueryCacheEntry.cs
- ZipIOCentralDirectoryDigitalSignature.cs
- OracleEncoding.cs
- RouteData.cs
- FontWeight.cs
- SizeChangedEventArgs.cs
- CodeLinePragma.cs
- GridViewUpdateEventArgs.cs
- LogLogRecordHeader.cs
- SchemaElementLookUpTable.cs
- Membership.cs
- SoapAttributeOverrides.cs
- X509CertificateCollection.cs
- ModifyActivitiesPropertyDescriptor.cs
- ParallelRangeManager.cs
- ButtonDesigner.cs
- HashMembershipCondition.cs
- Rect.cs
- Events.cs
- TextSelectionProcessor.cs
- DirectionalLight.cs
- HotSpot.cs
- WebPartZone.cs
- BuildResultCache.cs
- xdrvalidator.cs
- DynamicRendererThreadManager.cs
- PagedDataSource.cs
- CollectionViewGroupRoot.cs
- Transform3DGroup.cs
- DataGridViewCellLinkedList.cs
- Rect3DValueSerializer.cs
- TraceFilter.cs
- XmlSchemaAnnotated.cs
- PageSettings.cs
- HtmlUtf8RawTextWriter.cs
- OSFeature.cs
- WebPartTransformer.cs
- mediaclock.cs
- CookieProtection.cs
- InfoCardBinaryReader.cs
- BinarySerializer.cs
- ThaiBuddhistCalendar.cs
- AddInPipelineAttributes.cs
- GeneralTransform3DCollection.cs
- HttpCachePolicyElement.cs
- HttpContext.cs
- ErrorFormatterPage.cs
- ChildrenQuery.cs
- AbstractSvcMapFileLoader.cs
- SqlUserDefinedTypeAttribute.cs
- TextClipboardData.cs
- RawTextInputReport.cs
- DocumentApplication.cs
- DateTimeOffsetConverter.cs
- ErrorBehavior.cs
- IntermediatePolicyValidator.cs
- WinFormsComponentEditor.cs
- TabletCollection.cs
- DesignerFrame.cs
- TokenBasedSet.cs
- ModelItemCollectionImpl.cs
- ConstrainedGroup.cs
- AttributeQuery.cs
- IImplicitResourceProvider.cs
- CacheVirtualItemsEvent.cs
- Block.cs
- EditorZoneAutoFormat.cs
- PrefixHandle.cs
- EventLogTraceListener.cs
- HttpModuleActionCollection.cs
- ResourceProviderFactory.cs
- ToolboxCategoryItems.cs
- PseudoWebRequest.cs