diff options
Diffstat (limited to 'src/mscorlib/src/System/IO/StringReader.cs')
| -rw-r--r-- | src/mscorlib/src/System/IO/StringReader.cs | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/src/mscorlib/src/System/IO/StringReader.cs b/src/mscorlib/src/System/IO/StringReader.cs deleted file mode 100644 index e5fa811453..0000000000 --- a/src/mscorlib/src/System/IO/StringReader.cs +++ /dev/null @@ -1,187 +0,0 @@ -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -/*============================================================ -** -** -** -** -** Purpose: For reading text from strings -** -** -===========================================================*/ - -using System; -using System.Runtime.InteropServices; -using System.Diagnostics.Contracts; -using System.Security.Permissions; -using System.Threading.Tasks; - -namespace System.IO { - // This class implements a text reader that reads from a string. - // - [Serializable] - [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"); - Contract.EndContractBlock(); - _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. - // - [Pure] - 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")); - Contract.EndContractBlock(); - 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; - } - - #region Task based Async APIs - [ComVisible(false)] - public override Task<String> ReadLineAsync() - { - return Task.FromResult(ReadLine()); - } - - [ComVisible(false)] - public override Task<String> ReadToEndAsync() - { - return Task.FromResult(ReadToEnd()); - } - - [ComVisible(false)] - public override Task<int> ReadBlockAsync(char[] buffer, int index, int count) - { - if (buffer==null) - throw new ArgumentNullException("buffer", Environment.GetResourceString("ArgumentNull_Buffer")); - if (index < 0 || count < 0) - throw new ArgumentOutOfRangeException((index < 0 ? "index" : "count"), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); - if (buffer.Length - index < count) - throw new ArgumentException(Environment.GetResourceString("Argument_InvalidOffLen")); - - Contract.EndContractBlock(); - - return Task.FromResult(ReadBlock(buffer, index, count)); - } - - [ComVisible(false)] - public override Task<int> ReadAsync(char[] buffer, int index, int count) - { - if (buffer==null) - throw new ArgumentNullException("buffer", Environment.GetResourceString("ArgumentNull_Buffer")); - if (index < 0 || count < 0) - throw new ArgumentOutOfRangeException((index < 0 ? "index" : "count"), Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); - if (buffer.Length - index < count) - throw new ArgumentException(Environment.GetResourceString("Argument_InvalidOffLen")); - Contract.EndContractBlock(); - - return Task.FromResult(Read(buffer, index, count)); - } - #endregion - } -} |