Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / IO / StringReader.cs / 1 / StringReader.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: StringReader ** ** Purpose: For reading text from strings ** ** ===========================================================*/ using System; using System.Runtime.InteropServices; namespace System.IO { // This class implements a text reader that reads from a string. // [Serializable()] [System.Runtime.InteropServices.ComVisible(true)] public class StringReader : TextReader { private String _s; private int _pos; private int _length; public StringReader(String s) { if (s == null) throw new ArgumentNullException("s"); _s = s; _length = s == null? 0: s.Length; } // Closes this StringReader. Following a call to this method, the String // Reader will throw an ObjectDisposedException. public override void Close() { Dispose(true); } protected override void Dispose(bool disposing) { _s = null; _pos = 0; _length = 0; base.Dispose(disposing); } // Returns the next available character without actually reading it from // the underlying string. The current position of the StringReader is not // changed by this operation. The returned value is -1 if no further // characters are available. // public override int Peek() { if (_s == null) __Error.ReaderClosed(); if (_pos == _length) return -1; return _s[_pos]; } // Reads the next character from the underlying string. The returned value // is -1 if no further characters are available. // public override int Read() { if (_s == null) __Error.ReaderClosed(); if (_pos == _length) return -1; return _s[_pos++]; } // Reads a block of characters. This method will read up to count // characters from this StringReader into the buffer character // array starting at position index. Returns the actual number of // characters read, or zero if the end of the string is reached. // public override int Read([In, Out] char[] buffer, int index, int count) { if (buffer==null) throw new ArgumentNullException("buffer", Environment.GetResourceString("ArgumentNull_Buffer")); if (index < 0) throw new ArgumentOutOfRangeException("index", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); if (count < 0) throw new ArgumentOutOfRangeException("count", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); if (buffer.Length - index < count) throw new ArgumentException(Environment.GetResourceString("Argument_InvalidOffLen")); if (_s == null) __Error.ReaderClosed(); int n = _length - _pos; if (n > 0) { if (n > count) n = count; _s.CopyTo(_pos, buffer, index, n); _pos += n; } return n; } public override String ReadToEnd() { if (_s == null) __Error.ReaderClosed(); String s; if (_pos==0) s = _s; else s = _s.Substring(_pos, _length - _pos); _pos = _length; return s; } // Reads a line. A line is defined as a sequence of characters followed by // a carriage return ('\r'), a line feed ('\n'), or a carriage return // immediately followed by a line feed. The resulting string does not // contain the terminating carriage return and/or line feed. The returned // value is null if the end of the underlying string has been reached. // public override String ReadLine() { if (_s == null) __Error.ReaderClosed(); int i = _pos; while (i < _length) { char ch = _s[i]; if (ch == '\r' || ch == '\n') { String result = _s.Substring(_pos, i - _pos); _pos = i + 1; if (ch == '\r' && _pos < _length && _s[_pos] == '\n') _pos++; return result; } i++; } if (i > _pos) { String result = _s.Substring(_pos, i - _pos); _pos = i; return result; } return null; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: StringReader ** ** Purpose: For reading text from strings ** ** ===========================================================*/ using System; using System.Runtime.InteropServices; namespace System.IO { // This class implements a text reader that reads from a string. // [Serializable()] [System.Runtime.InteropServices.ComVisible(true)] public class StringReader : TextReader { private String _s; private int _pos; private int _length; public StringReader(String s) { if (s == null) throw new ArgumentNullException("s"); _s = s; _length = s == null? 0: s.Length; } // Closes this StringReader. Following a call to this method, the String // Reader will throw an ObjectDisposedException. public override void Close() { Dispose(true); } protected override void Dispose(bool disposing) { _s = null; _pos = 0; _length = 0; base.Dispose(disposing); } // Returns the next available character without actually reading it from // the underlying string. The current position of the StringReader is not // changed by this operation. The returned value is -1 if no further // characters are available. // public override int Peek() { if (_s == null) __Error.ReaderClosed(); if (_pos == _length) return -1; return _s[_pos]; } // Reads the next character from the underlying string. The returned value // is -1 if no further characters are available. // public override int Read() { if (_s == null) __Error.ReaderClosed(); if (_pos == _length) return -1; return _s[_pos++]; } // Reads a block of characters. This method will read up to count // characters from this StringReader into the buffer character // array starting at position index. Returns the actual number of // characters read, or zero if the end of the string is reached. // public override int Read([In, Out] char[] buffer, int index, int count) { if (buffer==null) throw new ArgumentNullException("buffer", Environment.GetResourceString("ArgumentNull_Buffer")); if (index < 0) throw new ArgumentOutOfRangeException("index", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); if (count < 0) throw new ArgumentOutOfRangeException("count", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); if (buffer.Length - index < count) throw new ArgumentException(Environment.GetResourceString("Argument_InvalidOffLen")); if (_s == null) __Error.ReaderClosed(); int n = _length - _pos; if (n > 0) { if (n > count) n = count; _s.CopyTo(_pos, buffer, index, n); _pos += n; } return n; } public override String ReadToEnd() { if (_s == null) __Error.ReaderClosed(); String s; if (_pos==0) s = _s; else s = _s.Substring(_pos, _length - _pos); _pos = _length; return s; } // Reads a line. A line is defined as a sequence of characters followed by // a carriage return ('\r'), a line feed ('\n'), or a carriage return // immediately followed by a line feed. The resulting string does not // contain the terminating carriage return and/or line feed. The returned // value is null if the end of the underlying string has been reached. // public override String ReadLine() { if (_s == null) __Error.ReaderClosed(); int i = _pos; while (i < _length) { char ch = _s[i]; if (ch == '\r' || ch == '\n') { String result = _s.Substring(_pos, i - _pos); _pos = i + 1; if (ch == '\r' && _pos < _length && _s[_pos] == '\n') _pos++; return result; } i++; } if (i > _pos) { String result = _s.Substring(_pos, i - _pos); _pos = i; return result; } return null; } } } // 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
- OutputCacheSettingsSection.cs
- GenericTextProperties.cs
- EFAssociationProvider.cs
- DocumentViewerBase.cs
- OletxEnlistment.cs
- BitmapEncoder.cs
- WindowsStatic.cs
- CodeGenerationManager.cs
- HtmlForm.cs
- InheritablePropertyChangeInfo.cs
- WebControlParameterProxy.cs
- ObjectDataSourceWizardForm.cs
- Error.cs
- TextEditorSelection.cs
- WindowsStatusBar.cs
- Annotation.cs
- IISMapPath.cs
- SeekStoryboard.cs
- WebPartsPersonalizationAuthorization.cs
- FastEncoderWindow.cs
- SignatureDescription.cs
- DynamicQueryableWrapper.cs
- RayHitTestParameters.cs
- LogicalCallContext.cs
- SafeSystemMetrics.cs
- SmtpNegotiateAuthenticationModule.cs
- Debug.cs
- VariantWrapper.cs
- XPathPatternParser.cs
- ActionFrame.cs
- ValueSerializerAttribute.cs
- RegexCompiler.cs
- HMACSHA256.cs
- CalendarDesigner.cs
- HistoryEventArgs.cs
- TypeConverterAttribute.cs
- TableLayoutPanelCellPosition.cs
- DesignerListAdapter.cs
- Boolean.cs
- CheckBoxList.cs
- ExpressionStringBuilder.cs
- ServiceReference.cs
- AmbientValueAttribute.cs
- TimeSpanFormat.cs
- IsolatedStorageFilePermission.cs
- Header.cs
- Debug.cs
- WorkflowServiceHost.cs
- ActiveXHost.cs
- UserNameSecurityToken.cs
- EdmSchemaError.cs
- SchemaElement.cs
- NotConverter.cs
- SHA1.cs
- ToolStripContentPanel.cs
- TreeNodeBinding.cs
- InitializationEventAttribute.cs
- TableChangeProcessor.cs
- PassportPrincipal.cs
- PageCatalogPart.cs
- ProfileManager.cs
- GroupQuery.cs
- UpdateCompiler.cs
- JsonObjectDataContract.cs
- TreeViewAutomationPeer.cs
- SerialPinChanges.cs
- DriveNotFoundException.cs
- TreeNodeBinding.cs
- DefaultTextStoreTextComposition.cs
- SoapCodeExporter.cs
- MenuItemStyleCollectionEditor.cs
- GridProviderWrapper.cs
- ProtocolsConfiguration.cs
- BuildManager.cs
- ClientData.cs
- AsyncInvokeOperation.cs
- SplineKeyFrames.cs
- CodeIdentifier.cs
- EasingKeyFrames.cs
- DataListCommandEventArgs.cs
- IntegerValidator.cs
- RuleRefElement.cs
- IdentityHolder.cs
- SoapTypeAttribute.cs
- QueryOutputWriter.cs
- EventsTab.cs
- NativeMethodsOther.cs
- ValidatorCompatibilityHelper.cs
- SoapElementAttribute.cs
- XPathCompileException.cs
- TemplatedMailWebEventProvider.cs
- ModelChangedEventArgsImpl.cs
- ServiceDescriptions.cs
- DataError.cs
- WindowsSecurityToken.cs
- DmlSqlGenerator.cs
- GridLengthConverter.cs
- TabItemWrapperAutomationPeer.cs
- WebServiceErrorEvent.cs
- IProducerConsumerCollection.cs