Android Question File name with a space

Pacache said:

I have now the problem with a file called "Genèse" when i call this file in the loop and log for its length, it mostly says 6 and suddenly it says 7 !!!!! and then 6 again ! how is it possible that in the same loop it can open the same file several times and suddenly the application seems to add a space or something else in its name ?

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Log(FullString("Hello world!!!"))
Log(FullString("Two bees, or not two bees?"))
Log(FullString("Genèse"))

Sub FullString(S As String) As String
  
    Dim sb As StringBuilder
    sb.Initialize
  
    Dim L As Int = S.Length
  
    sb.Append(L)
    sb.Append(" chars = (")

    Dim bc As ByteConverter
    Dim C() As Char = bc.ToChars(S)

    For I = 0 To L - 1
        If I <> 0 Then
            sb.Append(", ")
        End If
        sb.Append(Asc(C(I)))
    Next
  
    sb.Append(") = """ & S & """")
  
    Return sb.ToString
      
End Sub

Waiting for debugger to connect...
Program started.
14 chars = (72, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 33, 33, 33) = "Hello world!!!"
26 chars = (84, 119, 111, 32, 98, 101, 101, 115, 44, 32, 111, 114, 32, 110, 111, 116, 32, 116, 119, 111, 32, 98, 101, 101, 115, 63) = "Two bees, or not two bees?"
6 chars = (71, 101, 110, 232, 115, 101) = "Genèse"

Pacache said:

how is it possible that in the same loop it can open the same file several times and suddenly the application seems to add a space or something else in its name ?

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jahswant said:

Post your code so members can assist.

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Pacache said:

yes i though of trying to find out was was being added but didnt know how to do it. I will try your solution. Thank you very much !

emexes said:

Super! Reproducible bugs are great, even if not 100%.

Log the individual characters of the string too, to work out precisely what is being added.

My first thought is that, in UTF-8, the greater-than-ASCII character "è" would be two bytes rather than just one.

B4X:

Log(FullString("Hello world!!!"))
Log(FullString("Two bees, or not two bees?"))
Log(FullString("Genèse"))

Sub FullString(S As String) As String
 
    Dim sb As StringBuilder
    sb.Initialize
 
    Dim L As Int = S.Length
 
    sb.Append(L)
    sb.Append(" chars = (")

    Dim bc As ByteConverter
    Dim C() As Char = bc.ToChars(S)

    For I = 0 To L - 1
        If I <> 0 Then
            sb.Append(", ")
        End If
        sb.Append(Asc(C(I)))
    Next
 
    sb.Append(") = """ & S & """")
 
    Return sb.ToString
     
End Sub

Log Output:

Waiting for debugger to connect...
Program started.
14 chars = (72, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 33, 33, 33) = "Hello world!!!"
26 chars = (84, 119, 111, 32, 98, 101, 101, 115, 44, 32, 111, 114, 32, 110, 111, 116, 32, 116, 119, 111, 32, 98, 101, 101, 115, 63) = "Two bees, or not two bees?"
6 chars = (71, 101, 110, 232, 115, 101) = "Genèse"

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Pacache said:

Thank you Emexes you were great help with you code. it helped me find out that the added char on 1st position was 65279. I dont know why this char is added from time to time for the same file but all i had to do is replace it by an empty character.

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Dim CleanFileName As String = DirtyFileName.Replace(Chr(0xFEFF), "")