13 Feb
2012
13 Feb
'12
3:33 p.m.
After further analysis, it seems that the problem comes from asPetitStream
in PositionnableStream. This method checks if the attribute collection is
nil and uses the collection if it is not nil. In our case, the collection
is not nil but does not contain our file data, it only contains
whitespaces. The problem is about the behavior of our FileStream where
before reading, collection is not nil.
The question: does anyone have seen a similar problem with PP.
thanx
On Mon, Feb 13, 2012 at 1:40 PM, Lukas Renggli <renggli(a)gmail.com> wrote:
I do not understand what you are saying or asking.
Normally #asPetitStream should convert any non-memory stream to an
efficient in-memory representation. Maybe this does not work properly
in the Pharo version you are using? Or maybe your file is too big to
be loaded into memory?
While it is technically possible to use PetitParser on an external
stream (such as a file or socket stream) it is not advisable.
PetitParser requires highly efficient random access to the parsed data
and anything else than an indexed in-memory collection slows down the
parsing by magnitudes.
Lukas
On 13 February 2012 13:11, Usman Bhatti <usman.bhatti(a)gmail.com> wrote:
Hello all,
We are using petitParser with a Stream by the parse method on a PPParser.
This parse method calls asPetitStream on our stream which is supposed to
return a stream with a valid format for PPParser. The problem is that
this
stream do not represent our test file but a lot
of white spaces. this
code:
(StandardFileStream fileNamed: '/some/path/to/file/atextfile.txt' )
asPetitStream proves that.
Did someone else have a similar problem with petit parser?
thanx,
Usman & Guillaume
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Lukas Renggli
www.lukas-renggli.ch
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