Problem with rfc4180splitter in last beta (sticking point was found... maybe)

[Jaroslav Hajtmar <hajtmar@gyza.cz>]

Hello Hans.
I tried to find differences in beta compared to a fully functional 
version of the TL 2014 and I found two changes in the file-utils prs.lua 
compared to a fully functional version of utils-prs.lua in the TL 2014 
version of ConTeXt:

Changes in file utils-prs.lua (beta version) compared to TL 2014 (fully 
functional version):

line no 520 of beta standalone:
specification     = specification and 
setmetatableindex(specification,defaultspecification) or 
defaultspecification

while the TL 2014 version line no 478:
specification     = specification and 
table.setmetatableindex(specification,defaultspecification) or 
defaultspecification

and next diference:

line no 533 of beta standalone:
local wholeblob   = Ct((newline^(specification.strict and -1 or 1) * 
record)^0)

while the TL 2014 version line no 491:
local wholeblob   = Ct((newline^-1 * record)^0)


When I  change these lines and regenerate ConTeXt format then suddenly 
it works as expected. Of course, you will probably need to make some 
adjustments depending on your idea of a line 533rd.

I hope this information helps a little in search of a problem.


Jaroslav Hajtmar





Dne 15. 6. 2015 v 10:45 Jaroslav Hajtmar napsal(a):
> Hi Hans,
> I encountered while experimenting with the latest beta version of 
> standalone context to a problem when using the splitter. When I 
> process without header file then compilation crashed when you compile 
> the latest beta version. Conversely, the processing of a header file 
> is no problem. ConTEXt while compiling the 2014 TL is fine in both 
> cases. I do not know from which beta version was a problem, I 
> discovered it by accident until now. Send minimal example. When 
> gCSVHeader = true everything is OK when it is gCSVHeader = false and 
> compilation fails.
>
>
> Thanx for any advice
> Jaroslav Hajtmar
>
> Here is my minimal version of problematic example:
>
>
>
> % csvfile.txt content:
> % first,second,third,fourth
> % 1,"2","3","4"
> % "a","b","c","d"
> % "foo","bar""baz","boogie","xyzzy"
> %
>
>
>
> \starttext
>
> \startluacode
>      --gCSVHeader=true -- works fine when compiled any version of ConTeXt
>      gCSVHeader=false -- crashed, when compiled by last beta version 
> of standalone
>      gColNames={}
>      gColumnNames={}
>      local inpcsvfile='csvfile.txt'
>      local currentlyprocessedcsvfile = io.loaddata(inpcsvfile)
>      local mycsvsplitter = utilities.parsers.rfc4180splitter{
>         separator = ',',
>         quote = '"',
>         }
>     if gCSVHeader then
>      gTableRows, gColumnNames = 
> mycsvsplitter(currentlyprocessedcsvfile,true)
>      inspect(gTableRows)
>      inspect(gColumnNames)
>          for i=1,#gTableRows[1] do
>             gColNames[tostring(gColumnNames[i])] = i -- for indexing use
>         end
>     else
>       gTableRows = mycsvsplitter(currentlyprocessedcsvfile)
>       inspect(gTableRows)
>       -- ad now set column names for withoutheader situation:
>         for i=1,#gTableRows[1] do
>         context(gTableRows[i])
>          gColumnNames[i]='c'..(i)
>         end
>     end
>      gNumRows=#gTableRows -- Getting number of rows
>       gNumCols=#gTableRows[1] -- Getting number of columns
>
>      context.setgvalue("numrows",tostring(gNumRows))
>      context.setgvalue("numcols",tostring(gNumCols))
>      context.setgvalue("filename",tostring(inpcsvfile))
> \stopluacode
>
>
> File \filename\ has \numrows\ lines and \numcols\ columns.
>
> \stoptext
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