Hi,
> On 2 Oct 2017, at 13:07, Dirk Olmes <d...@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
