Re: mapfile -C issue

[Chet Ramey]

On 6/18/23 10:12 AM, alex xmb ratchev wrote:
> On Sun, Jun 18, 2023, 03:34 Emanuele Torre <torreemanuele6@gmail.com> wrote:

> > Anyway,  -C C -c 3  will call C every 3 lines/records read with the
> > current index of the array that will be set, and the current record.
> > Note that the callback is called before that record is stored in the
> > array.

Yes, this is how it works, and how it's documented.

> > And -c3 WILL NOT call C every 3 records, before assigning those three
> > records passing   key1 value1 key2 value2 key3 value3   to C.
>
> i see , didnt get that so
>
> thanks
>
> That is not how it is documented to work.

How so? This is how it's documented:

      -C     Evaluate  callback each time quantum lines are read.  The
             -c option specifies quantum.
      -c     Specify the number of lines read  between  each  call  to
             callback.

and

      When callback is evaluated, it is supplied the index of the next
      array element to be assigned and the line to be assigned to that
      element as additional arguments.  callback  is  evaluated  after
      the line is read but before the array element is assigned.

Which part is not clear?

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/