From: "Joshua Krämer" <joshua.kraemer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: ntg-context-wvrSQK3plZs@public.gmane.org
Subject: Tabulator in database file not passed to Lua
Date: Thu, 23 Jan 2014 21:43:31 +0100 [thread overview]
Message-ID: <20140123214331.5456ea4a@Klapprechner1.site> (raw)
Dear list,
I use the database module to load the lines of a file with some
data. The lines are then separated with a lua script. I use lua,
because I need to do some other things with the data (rounding
numbers, combining some fields etc.) Please consider the following
minimal working example:
\usemodule[database]
\defineseparatedlist [Data]
[
before=,
after=,
separator={},
commentchar=\letterpercent,
command=\Tabrow,
]
\startluacode
function explode(sep,str)
if (sep=="") then return false end
local pos,arr = 0,{}
-- for each separator found
for st,sp in function() return string.find(str,sep,pos,true) end do
-- Attach chars left of current separator
table.insert(arr,string.sub(str,pos,st-1))
-- Jump past current separator
pos = sp + 1
end
-- Attach chars right of last separator
table.insert(arr,string.sub(str,pos))
return arr
end
function tabrow(fileline)
local tabarray = explode(";",fileline)
local tabline = ""
for index,value in ipairs(tabarray) do
tabline = tabline .. " / " .. value
end
return tabline
end
\stopluacode
\define[1]\Tabrow{\ctxlua{context(tabrow("#1"))}}
\starttext
\processseparatedfile[Data][Test.dat]
\stoptext
This is the content of the file Test.dat:
Eins;zwei;drei;vier
Of course the line separation could be done easier with the database
module. However, I thought this way I could use the tabulator as the
separator in my file. But when I change the separator from ";" to
"\\t", it doesn't work. I suppose this is because the tabulators are
passed to Lua as spaces. Or is "\\t" the wrong code? Would it be
possible to use tabulators as separators, if I load the file with lua
and not with the database module?
Kind regards,
Joshua Krämer
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
next reply other threads:[~2014-01-23 20:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-23 20:43 Joshua Krämer [this message]
2014-01-23 22:17 ` Hans Hagen
2014-01-25 0:32 ` Joshua Krämer
2014-01-25 0:23 ` Hans Hagen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140123214331.5456ea4a@Klapprechner1.site \
--to=joshua.kraemer-re5jqeeqqe8avxtiumwx3w@public.gmane.org \
--cc=ntg-context-wvrSQK3plZs@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).