これが VBForums への私の最初の投稿であると言って始めましょう。私はしばらく潜んでいました。私はVBにかなり慣れていないので、論文を完成させるためにVBを学んでいます。では、私の無知をお許しください。
私がやろうとしているのは、別のプログラムによって生成されたログ ファイルからデータを読み取ることです。他のアルゴリズムで使用するために、そのファイルから特定の行を VB に取り込む必要があります。このログ ファイルは常に更新されるため、可能であればライブで読み取る必要があります。
問題がある場合は、別のソフトウェアと通信している USB デバイスからログ ファイルが生成されています。
サンプル ログは次のとおりです。
`
08:57:00.932 COM12
08:57:00.935 COM11
08:57:00.935 COM10
08:57:00.936 COM9
08:57:00.936 COM8
08:57:00.937 COM7
08:57:00.938 COM6
08:57:00.939 COM5
08:57:00.939 COM4
08:57:00.998 --> 0108000304FF0000
08:57:01.007 <-- 0108000304FF0000
TRF7970A EVM
08:57:01.014 **** COM Port found! ****
08:57:05.009 --> 010A0003041001210000
08:57:05.009 COM4
08:57:05.173 <-- 010A0003041001210000
Register write request.
08:57:05.173 --> 010C00030410002101020000
08:57:05.280 <-- 010C00030410002101020000
Register write request.
08:57:05.280 --> 010B000304140601000000
08:57:05.715 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:05.716 --> 010A0003041001210000
08:57:05.822 <-- 010A0003041001210000
Register write request.
08:57:05.822 --> 010C00030410002101020000
08:57:05.929 <-- 010C00030410002101020000
Register write request.
08:57:05.929 --> 010B000304140601000000
08:57:06.364 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:06.365 --> 010A0003041001210000
08:57:06.470 <-- 010A0003041001210000
Register write request.
08:57:06.470 --> 010C00030410002101020000
08:57:06.576 <-- 010C00030410002101020000
Register write request.
08:57:06.576 --> 010B000304140601000000
08:57:07.011 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:07.012 --> 010A0003041001210000
08:57:07.117 <-- 010A0003041001210000
Register write request.
08:57:07.117 --> 010C00030410002101020000
08:57:07.223 <-- 010C00030410002101020000
Register write request.
08:57:07.223 --> 010B000304140601000000
08:57:07.658 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:07.659 --> 010A0003041001210000
08:57:07.764 <-- 010A0003041001210000
Register write request.
08:57:07.764 --> 010C00030410002101020000
08:57:07.870 <-- 010C00030410002101020000
Register write request.
08:57:07.870 --> 010B000304140601000000
08:57:08.305 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:08.306 --> 010A0003041001210000
08:57:08.411 <-- 010A0003041001210000
Register write request.
08:57:08.411 --> 010C00030410002101020000
08:57:08.517 <-- 010C00030410002101020000
Register write request.
08:57:08.517 --> 010B000304140601000000
08:57:08.952 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:08.952 --> 010A0003041001210000
08:57:09.058 <-- 010A0003041001210000
Register write request.
08:57:09.058 --> 010C00030410002101020000
08:57:09.164 <-- 010C00030410002101020000
Register write request.
08:57:09.164 --> 010B000304140601000000
08:57:09.585 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]
[AD87851A000007E0,7F]
[,40][,40]D
08:57:09.586 --> 010A0003041001210000
08:57:09.692 <-- 010A0003041001210000
Register write request.
08:57:09.692 --> 010C00030410002101020000
08:57:09.798 <-- 010C00030410002101020000
Register write request.
08:57:09.798 --> 010B000304140601000000
08:57:10.233 <-- 010B000304140601000000
ISO 15693 Inventory request.
[,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40][,40]D
08:57:10.234 --> 010A0003041001210000
08:57:10.340 <-- 010A0003041001210000
Register write request.
08:57:10.340 --> 010C00030410002101020000
08:57:10.446 <-- 010C00030410002101020000
Register write request.
`
次の行を取得できるようにする必要があります: [AD87851A000007E0,7F]
「AD87851A000007E0」だけにして、VBでその文字列を使用できるようにします。これは変更される 16 進コードです。
ログ ファイルから読み取ることはできましたが、有効な出力を生成できませんでした。
これが私が使用しようとしているコードです:
Function ReadData(ByRef keyword As String) As IEnumerable(Of String)
Dim result = New List(Of String)
Using reader = New StreamReader("C:\rfid-reader.log")
Dim line As String = reader.ReadLine()
Dim take = False
Do While line IsNot Nothing
If line.StartsWith("[") Then
take = False
End If
If String.Equals("[" + keyword + ",", line) Then
take = True
End If
If take And Not String.IsNullOrEmpty(line) And Not line.StartsWith("'") Then
result.Add(line)
End If
line = reader.ReadLine()
Label1.Text = line
Loop
End Using
Return result
End Function
正直なところ、コードが機能していないのか、それとも関数から文字列を取得することに関して何か間違ったことをしているだけなのか、私にはわかりません。関数はそのまま Label1.Text に出力しますか?
また、次のように関数を呼び出してみました。
Dim items = ReadData("AD87851A000007E0")
Label1.Text = Convert.ToString(items)
これにより、Label1.Text は "System.Collections.Generic.List`1[System.String]" になります。
編集1
Imports System.IO
パブリック クラス Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim items = ReadData("AD87851A000007E0")
Label1.Text = String.Join(Environment.NewLine, items)
End Sub
Function ReadData(ByRef keyword As String) As IEnumerable(Of String)
Dim result = New List(Of String)
Using reader = New StreamReader("C:\rfid-reader.log")
Dim line As String = reader.ReadLine()
Dim take = False
Do While line IsNot Nothing
take = False ' resetting take = false to avoide printing all lines
If line.StartsWith("[" + keyword + ",") Then
take = True
End If
If take And Not String.IsNullOrEmpty(line) And Not line.StartsWith("'") Then
result.Add(line)
End If
line = reader.ReadLine()
Loop
End Using
Return result
End Function
クラス終了
編集2_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
現在までの新しいコード:
Imports System.IO
パブリック クラス Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim items = ReadData("AD87851A000007E0") ' Calling the specific hex code from the function. Advancement needed to get ALL hex codes.
' Dim items1 As String = Convert.ToString(items)
' Dim items2 As String = ""
' Dim k As Long
' k = InStrRev(items, ",")
' If k > 0 Then items2 = Left$(items, k)
Label1.Text = String.Join(Environment.NewLine, items) 'Printing function result to Label1
End Sub
'Function to search log file for a specific hex code. Removes not needed portions of the string. Advancements needed:
'Find ALL hex codes
'Ignore repeats until a reset is set true
'Store each hex code found in it's own variable for use in algorithms
Function ReadData(ByRef keyword As String) As IEnumerable(Of String)
Dim result = New List(Of String)
Using reader = New StreamReader("C:\rfid-reader.log")
Dim line As String = reader.ReadLine()
Dim take = False
Do While line IsNot Nothing
take = False ' resetting take = false to avoide printing all lines
If line.StartsWith("[" + keyword + ",") Then
take = True
End If
If take And Not String.IsNullOrEmpty(line) And Not line.StartsWith("'") Then
line = line.Remove(0, 1) 'removing the extra parts of the line
line = line.Remove(16, 4)
result.Add(line) 'adding the valid result
End If
line = reader.ReadLine()
Loop
End Using
Return result
End Function
クラス終了
編集3
Imports System.IO
パブリック クラス Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim items = ReadData("[") ' Calling the specific hex code from the function. Advancement needed to get ALL hex codes.
Label1.Text = String.Join(Environment.NewLine, items) 'Printing function result to Label1
End Sub
'Function to search log file for a specific hex code. Removes not needed portions of the string. Advancements needed:
'Find ALL hex codes
'Ignore repeats until a reset is set true
'Store each hex code found in it's own variable for use in algorithms
Function ReadData(ByRef keyword As String) As IEnumerable(Of String)
Dim result = New List(Of String)
Using reader = New StreamReader("C:\rfid-reader.log")
Dim line As String = reader.ReadLine()
Dim line1 As String = "COOKIES"
Dim line2 As String = "COOKIES1"
Dim line3 As String = "COOKIES2"
Dim line4 As String = "COOKIES3"
Dim line5 As String = "COOKIES4"
Dim line6 As String = "COOKIES5"
Dim line7 As String = "COOKIES6"
Dim line8 As String = "COOKIES7"
Dim line1found = False
Dim line2found = False
Dim line3found = False
Dim line4found = False
Dim line5found = False
Dim line6found = False
Dim line7found = False
Dim line8found = False
Dim take = False
Do While line IsNot Nothing
take = False ' resetting take = false to avoide printing all lines
If line.StartsWith(keyword) And Not line.StartsWith("[,4") And Not line.StartsWith("[z,") Then
take = True
End If
If line.Contains(line1) Or line.Contains(line2) Or line.Contains(line3) Or line.Contains(line4) Or line.Contains(line5) Or line.Contains(line6) Or line.Contains(line7) Or line.Contains(line8) Then 'attempting to ignore duplicates
take = False
End If
If take And Not String.IsNullOrEmpty(line) And Not line.StartsWith("'") Then
line = line.Remove(0, 1) 'removing the extra parts of the line
line = line.Remove(16, 4)
result.Add(line) 'adding the valid result
If line1 <> line And Not line1found Then 'assining results to variables for duplicate elimiation
line1 = line
line1found = True
ElseIf line2 <> line And line1 <> line And Not line2found Then
line2 = line
line2found = True
ElseIf line <> line3 And line <> line2 And line1 <> line And Not line3found Then
line3 = line
line3found = True
ElseIf line <> line4 And line <> line3 And line <> line2 And line <> line1 And Not line4found Then
line4 = line
line4found = True
ElseIf line <> line5 And line <> line4 And line <> line3 And line <> line2 And line <> line1 And Not line5found Then
line5 = line
line5found = True
ElseIf line6 <> line And line5 <> line And line4 <> line And line3 <> line And line2 <> line And line1 <> line And Not line6found Then
line6 = line
line6found = True
ElseIf line7 <> line And line6 <> line And line5 <> line And line4 <> line And line3 <> line And line2 <> line And line1 <> line And Not line7found Then
line7 = line
line7found = True
ElseIf line8 <> line And line7 <> line And line6 <> line And line5 <> line And line4 <> line And line3 <> line And line2 <> line And line1 <> line And Not line8found Then
line8 = line
line8found = True
End If
End If
line = reader.ReadLine()
Loop
End Using
Return result
End Function
クラス終了