Xojo Documentation Xojo Documentation

Method

Readable.EndOfFile() As Boolean

New in 2019r2

Supported for all project types and targets.

Returns True when there's no more data left to read.

Sample Code

This code reads the rows and columns of data from a tab-delimited text file into a ListBox:

Var f As FolderItem
Var textInput As TextInputStream
Var rowFromFile, oneCell As String

f = FolderItem.ShowOpenFileDialog("text/plain") // defined as a FileType
If f <> Nil Then
textInput = TextInputStream.Open(f)
textInput.Encoding = Encodings.UTF8

Do
rowFromFile = textInput.ReadLine
Var values() As String = rowFromFile.Split(Chr(9))
ListBox1.ColumnCount = values.Count
ListBox1.AddRow("")
Var col As Integer
For Each value As String In values
ListBox1.CellValueAt(ListBox1.LastAddedRowIndex, col) = value
col = col + 1
End For
Loop Until textInput.EndOfFile

textInput.Close
End If

This example reads each pair of bytes from a file and writes them in reverse order to a new file. The user chooses the source file using the Open-file dialog box and saves the new file using the Save as dialog box. The EOF property is used to terminate the Do loop.

Var readFile As FolderItem = FolderItem.ShowOpenFileDialog("text")
If readFile <> Nil Then
Var ReadStream As BinaryStream = BinaryStream.Open(readFile, False)
ReadStream.LittleEndian = True
Var writeFile As FolderItem = FolderItem.ShowSaveFileDialog("", "")
If writeFile <> Nil Then
Var writeStream As BinaryStream = BinaryStream.Create(writeFile, True)
writeStream.LittleEndian = True
Do Until ReadStream.EndOfFile
writeStream.WriteInt8(ReadStream.ReadInt8)
Loop
writeStream = Nil
End If
readStream = Nil
End If