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[473] | 1 | /*
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| 2 | @file Include/Classes/System/IO/StreamWriter.ab
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| 3 | @brief StreamWriterの実装。
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| 4 | */
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| 5 |
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[271] | 6 | Namespace System
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| 7 | Namespace IO
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[473] | 8 |
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| 9 | /*
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[476] | 10 | @brief ストリームへの書き込みを行うTextWriterの派生。
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[473] | 11 | @date 2008/03/09
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| 12 | @auther Egtra
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| 13 | */
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[105] | 14 | Class StreamWriter
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[468] | 15 | Inherits TextWriter
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| 16 | Public
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| 17 | /*
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[473] | 18 | @date 2008/03/09
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[468] | 19 | @auther Egtra
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| 20 | */
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| 21 | Sub StreamWriter(path As String)
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[682] | 22 | init(New FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None), Nothing)
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[468] | 23 | End Sub
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| 24 |
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| 25 | /*
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[473] | 26 | @date 2008/03/09
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[468] | 27 | @auther Egtra
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| 28 | */
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| 29 | Sub StreamWriter(stream As Stream)
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[682] | 30 | init(stream, Nothing)
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[468] | 31 | End Sub
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| 32 |
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[622] | 33 | /*
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[682] | 34 | @date 2009/02/16
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| 35 | @auther Egtra
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| 36 | */
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| 37 | Sub StreamWriter(stream As Stream, encoding As Text.Encoding)
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| 38 | init(stream, encoding)
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| 39 | End Sub
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| 40 |
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| 41 | /*
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[622] | 42 | @brief 基になるストリームを取得する
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| 43 | @date 2008/09/02
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| 44 | @auther NoWest
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| 45 | */
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[627] | 46 | Function BaseStream () As System.IO.Stream
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[622] | 47 | Return s
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| 48 | End Function
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| 49 |
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[473] | 50 | Override Sub Flush()
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[676] | 51 | Flush(False)
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[473] | 52 | End Sub
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| 53 |
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[676] | 54 | Sub Flush(last As Boolean)
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| 55 | #ifdef UNICODE
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| 56 | encoder.Encode(StrPtr(buf), buf.Length As SIZE_T, s, last)
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[695] | 57 | buf.Remove(0, buf.Length)
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[676] | 58 | #else
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| 59 | Dim p = StrPtr(buf)
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| 60 | Dim i = 0 As SIZE_T
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| 61 | Dim mbLen = 0 As SIZE_T
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| 62 | While i <= buf.Length
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| 63 | mbLen = i
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| 64 | 'ヌル文字で終わっていないので、CharNextは使えない
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| 65 | If IsDBCSLeadByte(p[i]) Then
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| 66 | i += 2
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| 67 | Else
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| 68 | i += 1
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| 69 | End If
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| 70 | Wend
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| 71 | Dim wcBuf As PCWSTR
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| 72 | Dim wcLen = GetStr(p, mbLen, wcBuf)
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| 73 | encoder.Encode(wcBuf, wcLen, s, last)
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| 74 | buf.Remove(0, mbLen)
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| 75 | If last Then
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| 76 | If buf.Length <> 0 Then
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| 77 | s.WriteByte(Asc("?"))
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| 78 | buf.Length = 0
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| 79 | End If
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| 80 | End If
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| 81 | #endif
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| 82 | End Sub
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| 83 |
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[468] | 84 | Protected
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| 85 | Override Sub Dispose(disposing As Boolean)
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| 86 | If disposing Then
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[676] | 87 | Flush(True)
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[468] | 88 | s.Dispose()
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| 89 | End If
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| 90 | End Sub
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| 91 |
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| 92 | Private
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[682] | 93 | Sub init(stream As Stream, e As Text.Encoding)
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[468] | 94 | s = stream
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[653] | 95 | buf = New Text.StringBuilder(4096)
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[682] | 96 | If ActiveBasic.IsNothing(e) Then
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| 97 | '暫定。正式版ではUTF-8を標準とする。
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| 98 | encoder = New Text.Detail.WindowsCodePageEncoder(CP_ACP)
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| 99 | Else
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| 100 | encoder = e.GetEncoder()
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| 101 | End If
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[468] | 102 | End Sub
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| 103 |
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[653] | 104 | encoder As Text.Encoder
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[468] | 105 | s As System.IO.Stream
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[271] | 106 | End Class
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| 107 |
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| 108 | End Namespace
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| 109 | End Namespace
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