Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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
- ListenUriMode.cs
- parserscommon.cs
- _CommandStream.cs
- ParseChildrenAsPropertiesAttribute.cs
- MsmqIntegrationProcessProtocolHandler.cs
- RuleProcessor.cs
- StringUtil.cs
- TemplateControlParser.cs
- isolationinterop.cs
- SQLBytes.cs
- DataGridViewElement.cs
- GridItem.cs
- EntityTypeBase.cs
- Assert.cs
- ValidationSummary.cs
- Win32.cs
- UnmanagedMemoryStreamWrapper.cs
- ReachSerializer.cs
- FindCriteriaCD1.cs
- PrimitiveSchema.cs
- CodeRegionDirective.cs
- WebPartUtil.cs
- AsnEncodedData.cs
- AccessControlEntry.cs
- GridView.cs
- ClientRuntimeConfig.cs
- TemplateBindingExtension.cs
- Propagator.JoinPropagator.cs
- ClientData.cs
- SystemFonts.cs
- UpdatePanelTriggerCollection.cs
- DbSetClause.cs
- AssemblyInfo.cs
- LogEntrySerializationException.cs
- DBAsyncResult.cs
- KeyedHashAlgorithm.cs
- DataGridViewSelectedColumnCollection.cs
- FixedPageStructure.cs
- FixedHighlight.cs
- ExpressionVisitor.cs
- XmlSerializationReader.cs
- DbConnectionStringBuilder.cs
- GenericTypeParameterBuilder.cs
- DataGridColumn.cs
- BinaryObjectInfo.cs
- SiteMapNodeItem.cs
- WebServicesSection.cs
- RequestCacheEntry.cs
- Track.cs
- CaretElement.cs
- NamedObject.cs
- DataGridViewTextBoxCell.cs
- SecurityPolicySection.cs
- VerificationAttribute.cs
- OleDbConnectionInternal.cs
- HttpListenerRequestTraceRecord.cs
- TextDecorations.cs
- BamlBinaryReader.cs
- PassportPrincipal.cs
- CryptoApi.cs
- ListManagerBindingsCollection.cs
- XPathExpr.cs
- C14NUtil.cs
- RichTextBox.cs
- RemotingException.cs
- OleDbRowUpdatedEvent.cs
- EmptyReadOnlyDictionaryInternal.cs
- SoapMessage.cs
- HttpClientCertificate.cs
- DataGridViewButtonCell.cs
- IsolatedStorage.cs
- MenuScrollingVisibilityConverter.cs
- SqlDataSourceFilteringEventArgs.cs
- WriteFileContext.cs
- TextAction.cs
- ValidationUtility.cs
- HostSecurityManager.cs
- CodeMethodReturnStatement.cs
- GeometryHitTestResult.cs
- XmlQueryCardinality.cs
- MailDefinition.cs
- HandlerBase.cs
- ContextMenuAutomationPeer.cs
- UserControl.cs
- DataGridToolTip.cs
- PipeStream.cs
- StrongNameMembershipCondition.cs
- InstanceCreationEditor.cs
- CompilerInfo.cs
- ApplicationServiceHelper.cs
- RNGCryptoServiceProvider.cs
- DictationGrammar.cs
- LogExtent.cs
- SystemResources.cs
- TextFormatterContext.cs
- CodeNamespace.cs
- datacache.cs
- DataGridItem.cs
- UrlMappingsSection.cs
- Symbol.cs