Minor cleanup:
foo=: 3 : 0
try. (1!:5 <jpath '~temp/wget') catch. 0 end.
tout=:dquote jpath jout=:'~temp/wget/out'
cmd1=:dquote jpath '~tools/ftp/wget.exe'
cmd2=:dquote jpath '~tools/ftp/busybox.exe'
opts=:' -S -O',tout,' '
api=:'http://api.stackexchange.com/2.2/answers/264298?order=desc&sort=activity&site=meta&filter=!.UDo6l2ikDi7iGlf'
res=:spawn_jtask_ cmd1,opts,api
if. +/'Content-Encoding: gzip' E. res do.
res=: spawn_jtask_ cmd2,' gunzip -ck ',tout
end.
ferase <jout
ferase <jpath '~temp/wget'
res
)
On 3/3/2019 07:09, David Mitchell wrote:
Here is a more verbose approach that uses the wget returned response to
determine if gunzip is needed:
foo=: 3 : 0
tout=:dquote jpath jout=:'~temp/wget/out'
tmsg=:dquote jpath '~temp/wget/msg'
cmd1=:dquote jpath '~tools/ftp/wget.exe'
cmd2=:dquote jpath '~tools/ftp/busybox.exe'
opts=:' -S -O',tout,' '
api=:'http://api.stackexchange.com/2.2/answers/264298?order=desc&sort=activity&site=meta&filter=!.UDo6l2ikDi7iGlf'
res=:spawn_jtask_ cmd1,opts,api
if. +/'Content-Encoding: gzip' E. res do.
res=: spawn_jtask_ cmd2,' gunzip -ck ',tout
end.
ferase <jout
res
)
On 3/2/2019 23:04, bill lam wrote:
use this,
load'web/gethttp'
api=:'http://api.stackexchange.com/2.2/answers/264298?order=desc&sort=activity&site=meta&filter=!.UDo6l2ikDi7iGlf'
(gethttp dquote api) spawn_jtask_ (dquote jpath '~tools/ftp/busybox'),' gunzip
-c'
{"items":[{"last_activity_date":1440639019,"answer_id":264298,"body_markdown":"Yes,....
The problem is not in wget or curl. wget in centos doesn't have
the --compression option either.
Sat, 02 Mar 2019, Nimp O написал(а):
Thank you bill,
I tried piping the resulting binary stream to busybox within J but it gave me
an error. I may be doing something wrong, I don't usually interact with J
using shell commands.
shell (gethttp api),'|',jpath'~tools/ftp/busybox.exe gunzip'
|domain error: uucp
| 'r pi'=.0 _1{CreateProcessF 0;( uucp y);0;0;inh;f;0;0;si;pi
Nevertheless, the equivalent line works in the windows command prompt.
Despite this, maybe the ideal solution would be to update curl and wget
binaries to support this form of decompression, avoiding the use of multiple
shell utilities.
Thanks.
________________________________
From: Programming <programming-boun...@forums.jsoftware.com> on behalf of
bill lam <bbill....@gmail.com>
Sent: Saturday, March 2, 2019 10:52 AM
To: programm...@jsoftware.com
Subject: Re: [Jprogramming] Decompressing gzip in J
You can use gunzip to decompress the data.
busybox.exe bundled in j807 should have this function.
Sat, 02 Mar 2019, bill lam написал(а):
Oh, I tried, stackexchange always responsed with gzip data even
wget had not asked. You need to add an extra option in wget
--compression=gzip
try use --compressed if it is curl.
I think you are using windows because your api string won't work
on linux, shell will expand special character in it unless
quoted.
the wget.exe bundled in J are old and does not support the above
mentioned option, not sure about the curl.exe in the addon.
Sat, 02 Mar 2019, bill lam написал(а):
If you are using a recent enough version of wget, it should
automatically decompress data received.
Sat, 02 Mar 2019, Nimp O написал(а):
Hello everyone,
For educational purposes I'm trying to read a JSON response from the
StackOverflow API in J.
My current session is:
load'web/gethttp'
load'pjson'
api=:'http://api.stackexchange.com/2.2/answers/264298?order=desc&sort=activity&site=meta&filter=!.UDo6l2ikDi7iGlf'
gethttp api
�U��J1┌�_%F┌
��┼┬��[�P�����Ŧ��
�M��ٶK黛]O �����s���&Y,� ...
The problem is that apparently the response is gzipped. Does anyone know
how can I accomplish the decompression of this binary response inside J?
I tried using the arc/zip and zlib addons with no success.
Thanks.
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