Re: [Pharo-users] Downloading large files with a progress bar

May 12, 2016

      Hi Sven,

Thanks for your quick answer. I tried both approaches but I'm missing 
something. See my last attempt at http://ws.stfx.eu/KBVBAP72IWOO with 
the last one. I get a progress bar message, but not the advancements on 
it. What I'm missing?

Cheers,

Offray

ps: The file I'm trying to download is covered by the Open Data Base 
License.

On 12/05/16 17:24, Sven Van Caekenberghe wrote:
...
Hi Offray,
The actual implementation of #saveContentsToFile: can be found in ZnHttpSaveContentsToFile>>#performOperation where you can see how ZnClient is invoked. Just copy that with signalProgress: true added and you should be good.
Alternatively, you could wrap the first expression as follows:
ZnSignalProgress
   value: true
   during: [ myUrl asUrl saveContentsToFile: file ]
ZnSignalProgress is a DynamicVariable that is used by ZnClient to figure out if progress should be signalled. It takes precedence over the option #signalProgress. See #withProgressDo: if you are interested.
HTH,
Sven
...
On 13 May 2016, at 00:14, Offray Vladimir Luna CÃ¡rdenas <offray.luna@mutabit.com> wrote:
Hi,
I'm using
myUrl asUrl saveContentsToFile: file
to download large files and is working fine. But I would like to add a progress bar to show the progress to the user. Previously I used
===============
[: bar |
        bar title: aString.
        [
            "A classical ZnClient download with signalProgress: true;"
        ]
            on: HTTPProgress
            do: [ :progress |
                progress isEmpty ifFalse: [ bar current: progress percentage ].
                progress resume ].
    ] asJob run.
===============
but I don't know how to signal progress with "saveContentsToFile".
Any hints?
Thanks,
Offray