Sven I do not see the binary stream. Is it ZnCharacterReadStream? Stef On Mon, Oct 2, 2017 at 1:22 PM, Sven Van Caekenberghe <sven@stfx.eu> wrote:
Hi,
On 2 Oct 2017, at 13:07, Dirk Olmes <dirk@xanthippe.ping.de> wrote:
Hi,
I'm trying to get started with Pharo doing something really simple - at least that's what I thought ... I'm trying to read a text file line by line.
If I use File named: '/tmp/linex.txt' readStream nextLine I'll get a debugger telling me that BinaryFileStream does not understand nextLine.
Now I've tried my best to find a stream that may be reading plain text lines but to no avail ...
Help!
-dirk
$ cat > /tmp/lines.txt one two three
(FileLocator temp / 'lines.txt') contents lines.
'/tmp/lines.txt' asFileReference contents lines.
'/tmp/lines.txt' asFileReference readStreamDo: [ :in | Array streamContents: [ :out | [ in atEnd ] whileFalse: [ out nextPut: in nextLine ] ] ].
(File named: '/tmp/lines.txt') readStreamDo: [ :in | | characterStream | characterStream := ZnCharacterReadStream on: in. Array streamContents: [ :out | [ characterStream atEnd ] whileFalse: [ out nextPut: characterStream nextLine ] ] ].
They all return #('one' 'two' 'three').
In the last, more complex example, you first get a binary stream (and a 'line' is a character based concept), so wrapping the binary stream in a character read stream (which does know about lines) solves the problem.
HTH,
Sven