Last change
on this file since 665 was 665, checked in by イグトランス (egtra), 15 years ago |
TextWriter同様TextReaderでバッファリングし、StreamReaderはMultiByteToWideChar固定で仮実装。これで、マルチバイトモードでもStringReaderが使えるようにした。
(#235)
|
File size:
1.8 KB
|
Line | |
---|
1 | 'Classes/System/IO/StreamReader.ab
|
---|
2 |
|
---|
3 | Namespace System
|
---|
4 | Namespace IO
|
---|
5 |
|
---|
6 | /*
|
---|
7 | @brief ストリームから読み取りを行うTextReaderの実装。
|
---|
8 | @date 2008/02/25
|
---|
9 | @auther Egtra
|
---|
10 | */
|
---|
11 | Class StreamReader
|
---|
12 | Inherits TextReader
|
---|
13 | Public
|
---|
14 | /*
|
---|
15 | @date 2008/02/25
|
---|
16 | @auther Egtra
|
---|
17 | */
|
---|
18 | Sub StreamReader(path As String)
|
---|
19 | init(New FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
|
---|
20 | End Sub
|
---|
21 |
|
---|
22 | /*
|
---|
23 | @date 2008/02/25
|
---|
24 | @auther Egtra
|
---|
25 | */
|
---|
26 | Sub StreamReader(stream As Stream)
|
---|
27 | init(stream)
|
---|
28 | End Sub
|
---|
29 |
|
---|
30 | Public
|
---|
31 | /*
|
---|
32 | @brief 基になるストリームを取得する
|
---|
33 | @date 2008/09/02
|
---|
34 | @auther NoWest
|
---|
35 | */
|
---|
36 | Function BaseStream () As Stream
|
---|
37 | Return s
|
---|
38 | End Function
|
---|
39 |
|
---|
40 |
|
---|
41 | Protected
|
---|
42 | /*
|
---|
43 | @date 2008/02/25
|
---|
44 | @auther Egtra
|
---|
45 | */
|
---|
46 | Override Sub Dispose(disposing As Boolean)
|
---|
47 | If disposing Then
|
---|
48 | If Not ActiveBasic.IsNothing(s) Then
|
---|
49 | s.Dispose(True)
|
---|
50 | End If
|
---|
51 | End If
|
---|
52 | s = Nothing
|
---|
53 | End Sub
|
---|
54 |
|
---|
55 | /*
|
---|
56 | @date 2008/12/27
|
---|
57 | @auther Egtra
|
---|
58 | */
|
---|
59 | Override Function Underflow() As Boolean
|
---|
60 | Dim wcBuf[4095] As WCHAR
|
---|
61 | Dim mbBuf[4095] As SByte
|
---|
62 | Dim mbLen = s.Read(mbBuf As *Byte, 0, Len(buf))
|
---|
63 | If mbLen = 0 Then
|
---|
64 | Underflow = False
|
---|
65 | Exit Function
|
---|
66 | End If
|
---|
67 | Dim pNext = mbBuf As PSTR
|
---|
68 | Do
|
---|
69 | Dim q = CharNextExA(cp, pNext, 0)
|
---|
70 | If q = pNext Then
|
---|
71 | Exit Do
|
---|
72 | End If
|
---|
73 | pNext = q As PSTR
|
---|
74 | Loop
|
---|
75 | If pNext <> mbBuf + mbLen Then
|
---|
76 | leadByte = mbBuf[mbLen - 1]
|
---|
77 | End If
|
---|
78 | Dim wcLen = MultiByteToWideChar(cp, 0, mbBuf, (pNext - mbBuf) As Long, wcBuf, 4095)
|
---|
79 | Dim s = New String(wcBuf, wcLen)
|
---|
80 | Dim buf = Buffer
|
---|
81 | buf.Append(s)
|
---|
82 | Underflow = True
|
---|
83 | End Function
|
---|
84 | Private
|
---|
85 |
|
---|
86 | /*
|
---|
87 | @date 2008/02/25
|
---|
88 | @auther Egtra
|
---|
89 | */
|
---|
90 | Sub init(str As Stream)
|
---|
91 | s = str
|
---|
92 | cp = CP_ACP '暫定。
|
---|
93 | leadByte = 0
|
---|
94 | End Sub
|
---|
95 |
|
---|
96 | s As Stream
|
---|
97 | cp As Word
|
---|
98 | leadByte As Byte
|
---|
99 | End Class
|
---|
100 |
|
---|
101 | End Namespace
|
---|
102 | End Namespace
|
---|
Note:
See
TracBrowser
for help on using the repository browser.