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bug#30430: [column] accounting for ansi color codes
From: |
Boruch Baum |
Subject: |
bug#30430: [column] accounting for ansi color codes |
Date: |
Mon, 12 Feb 2018 07:22:22 -0500 |
User-agent: |
NeoMutt/20171215 |
On 2018-02-12 08:23, Bernhard Voelker wrote:
> On 02/12/2018 07:07 AM, Boruch Baum wrote:
>> ...
> Unfortunately, you did not show us neither the input
Easy... A sample input would be:
2018-02-09 11:10:27 status unpacked libefivar0:amd64 0.15-3
2018-02-09 11:10:28 status half-configured libefivar0:amd64 0.15-3
2018-02-09 11:10:28 status installed libefivar0:amd64 0.15-3
2018-02-09 11:10:28 trigproc man-db:amd64 2.7.0.2-5 <none>
2018-02-09 11:10:28 status half-configured man-db:amd64 2.7.0.2-5
2018-02-09 11:10:29 status installed man-db:amd64 2.7.0.2-5
2018-02-09 11:10:29 configure efibootmgr:amd64 0.11.0-3 <none>
2018-02-09 11:10:29 status unpacked efibootmgr:amd64 0.11.0-3
2018-02-09 11:10:29 status half-configured efibootmgr:amd64 0.11.0-3
2018-02-09 11:10:29 status installed efibootmgr:amd64 0.11.0-3
> - and I don't have dpkg -, nor the output,
Also easy. First, an easily readable sample output, without piping
colorization into `column' would be, :
>> awk '{sub("install|configure|upgrade|trigproc","& _",$3);print}' \
>> /var/log/dpkg.log | column -t
2018-02-09 11:10:27 status unpacked libefivar0:amd64
0.15-3
2018-02-09 11:10:28 status half-configured libefivar0:amd64
0.15-3
2018-02-09 11:10:28 status installed libefivar0:amd64
0.15-3
2018-02-09 11:10:28 trigproc _ man-db:amd64
2.7.0.2-5 <none>
2018-02-09 11:10:28 status half-configured man-db:amd64
2.7.0.2-5
2018-02-09 11:10:29 status installed man-db:amd64
2.7.0.2-5
2018-02-09 11:10:29 configure _ efibootmgr:amd64
0.11.0-3 <none>
2018-02-09 11:10:29 status unpacked efibootmgr:amd64
0.11.0-3
2018-02-09 11:10:29 status half-configured efibootmgr:amd64
0.11.0-3
2018-02-09 11:10:29 status installed efibootmgr:amd64 0.11.0-3
For the colorized output, ie. the actual raw output and the subject of
the bug report, here are two versions. First, in-line, with the
colorization codes stripped out so that it might be easily readable by
all, and; second, in raw format, as an mail attachment file, to avoid
having the control sequences somehow possibly messing with some hapless
reader's TTY.
>> awk '{sub("install|configure|upgrade|trigproc","& _",$3);print}' \
>> /var/log/dpkg.log | ccze -m ansi -o noscroll >&1 | column -t
2018-02-09 11:10:27 status unpacked libefivar0:amd64 0.15-3
2018-02-09 11:10:28 status half-configured libefivar0:amd64 0.15-3
2018-02-09 11:10:28 status installed libefivar0:amd64 0.15-3
2018-02-09 11:10:28 trigproc _ man-db:amd64
2.7.0.2-5 <none>
2018-02-09 11:10:28 status half-configured man-db:amd64
2.7.0.2-5
2018-02-09 11:10:29 status installed man-db:amd64
2.7.0.2-5
2018-02-09 11:10:29 configure _ efibootmgr:amd64
0.11.0-3 <none>
2018-02-09 11:10:29 status unpacked efibootmgr:amd64
0.11.0-3
2018-02-09 11:10:29 status half-configured efibootmgr:amd64
0.11.0-3
2018-02-09 11:10:29 status installed efibootmgr:amd64
0.11.0-3
> FWIW: what happens if you switch the two formatting commands, i.e., use
>
> $ ... | column -t | ccze ...
>
> instead of
>
> $ ... | ccze .... | column -t
>
> ?
! The colorization is not usefully applied, ie. the entire output is
monochrome, but in a color different that the input or normal STDOUT.
> At least when the input uses a different separator,
That would be a misunderstanding in what `ccze' does. It is specifically
intended for log files only. See, for example, man (1) ccze.
> then you'd have to do that anyway - otherwise the separation of the
> columns is messed;
> compare:
>
> $ head -n3 /etc/passwd | ccze -m ansi -o noscroll | column -t -s:
As above, the colorization is not usefully applied, ie. the entire
output is monochrome, but in a color different that the input or normal
STDOUT.
> $ head -n3 /etc/passwd | column -t -s: | ccze -m ansi -o noscroll
A reasonably colorized output is applied.
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warning_-_columnized_ccze_output_including_raw_ansi_color_codes.txt
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