Jason,
Thanks for your help!
I, too, have made this mistake before, but somehow did not realize it in
this situation.
I also changed the 'file' rule to expect at least one pair of a record (row)
and a newline:
rule(:file) {(record.as(:row) >> newline).repeat(1)}
The old code:
rule(:file) {record.as(:row) >> (newline >> record.as(:row)).repeat >>
newline.maybe}
though being a direct translation of the abnf specifications (or so I
believe), resulted in the parser always returning an additional :row hash
containing a single empty :column hash:
{:row=>{:column=>[]}}]
Next I will check out Parslet::Transform to format the data returned by the
parser.
Thanks again for your help!
Stefan
On Fri, Aug 5, 2011 at 21:15, Jason Garber <[email protected]> wrote:
> Stefan,
> It's a very simple mistake I've made a thousand times—you single-quoted
> your newline and return in the #absent? section of :textdata, so it was
> trying to match "\\n" instead of "\n". ("\\n" == '\n')
>
> All I did to figure it out was to comment out the lines in the input after
> the ones that were working (in order to exclude the trouble spot). I got:
>
> {:row=>
> [{:column=>"John"@0},
> {:column=>"Doe"@5},
> {:column=>"120 jefferson st."@9},
> {:column=>"Riverside"@27},
> {:column=>" NJ"@37},
> {:column=>" 08075\nJack"@41},
> {:column=>"McGinnis"@53},
> {:column=>"220 hobo Av."@62},
> {:column=>"Phila"@75},
> {:column=>" PA"@81},
> {:column=>"09119\nStephen"@85},
> {:column=>"Tyler"@99},
> {:column=>"\"7452 Terrace \"\"At the Plaza\"\" road\""@105},
> {:column=>"SomeTown"@142},
> {:column=>"SD"@151},
> {:column=>" 91234\n"@154}]}
>
> And that let me know that the unquoted record value was consuming newlines
> when it shouldn't be.
>
> Best of luck!
> Jason
>
> On Thu, Aug 4, 2011 at 6:12 PM, Stefan Rohlfing <[email protected]
> > wrote:
>
>> Hi,
>>
>> I am trying to parse CSV files with Parset according to the more or
>> less official abfn specification. Unfortunately, I got stuck and have
>> not been able to figure how to make the error message go away.
>>
>> This is the code in question:
>> https://github.com/bytesource/CSVTable/blob/master/lib/csvparser.rb
>>
>> It contains all the relevant information, that is the:
>> -- abfn specification
>> -- parser code
>> -- test code
>> -- error message form running the code
>>
>> I would be glad if someone could take a look at this code and maybe
>> help me spot my error.
>>
>> Thanks in advance!
>>
>> Stefan
>>
>
>
