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Fun with Pharo generated source.st

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Holger Freyther

Fun with Pharo generated source.st

Hi,

I am trying to convert/import all of Iliad (since the development had
moved to Pharo) and I stumble up-on an issue I already had when I tried
to convert Aida.

This[1] monticello file in line 6417 starts to use UCS-4 for a string
and then stops at some characters later. Importing the file using
FileStream is failing in Pharo as well.

There doesn't appear to be a BOM before the UCS-4 so I wonder if we
can detect it or not. Maybe it is time to use more of MontiCello to
read these files directly.

ideas?

holger

[1]http://www.squeaksource.com/IliadDev/Iliad-Core0.9.1-SebastienAudier.5.mcz

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Paolo Bonzini-2

Re: Fun with Pharo generated source.st

Il 04/05/2013 18:51, Holger Hans Peter Freyther ha scritto:
> Hi,
>
> I am trying to convert/import all of Iliad (since the development had
> moved to Pharo) and I stumble up-on an issue I already had when I tried
> to convert Aida.
>
> This[1] monticello file in line 6417 starts to use UCS-4 for a string
> and then stops at some characters later. Importing the file using
> FileStream is failing in Pharo as well.

And how does monticello file it in then?!? I'm adding the Pharo list.

Paolo

> There doesn't appear to be a BOM before the UCS-4 so I wonder if we
> can detect it or not. Maybe it is time to use more of MontiCello to
> read these files directly.
>
> ideas?
>
> holger
>
>
>
> [1]http://www.squeaksource.com/IliadDev/Iliad-Core0.9.1-SebastienAudier.5.mcz
>
> _______________________________________________
> help-smalltalk mailing list
> [hidden email]
> https://lists.gnu.org/mailman/listinfo/help-smalltalk
>

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Holger Freyther

Re: Fun with Pharo generated source.st

On Sun, May 05, 2013 at 10:54:45AM +0200, Paolo Bonzini wrote:
> > This[1] monticello file in line 6417 starts to use UCS-4 for a string
> > and then stops at some characters later. Importing the file using
> > FileStream is failing in Pharo as well.
>
> And how does monticello file it in then?!? I'm adding the Pharo list.

Hi,

I had already asked a separate question over there (how to fix and if it
is still broken).

The MCZ contains a snapshot (MczDatastream of MCDefinition subclasses)
and the snapshot/*.st. Depending on how the mcz is loaded it will just
load the snapshot and apply the MCDefinition's.

holger

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Frank Shearar-3

Re: [Pharo-project] Fun with Pharo generated source.st

In reply to this post by Paolo Bonzini-2

On 5 May 2013 09:54, Paolo Bonzini <[hidden email]> wrote:

> Il 04/05/2013 18:51, Holger Hans Peter Freyther ha scritto:
>> Hi,
>>
>> I am trying to convert/import all of Iliad (since the development had
>> moved to Pharo) and I stumble up-on an issue I already had when I tried
>> to convert Aida.
>>
>> This[1] monticello file in line 6417 starts to use UCS-4 for a string
>> and then stops at some characters later. Importing the file using
>> FileStream is failing in Pharo as well.
>
> And how does monticello file it in then?!? I'm adding the Pharo list.

Monticello doesn't use the snapshot. The snapshot's stored in addition
to the "real" MC stuff, containing the changes that the mcz defines.

It's sorta-kinda like the difference between your working copy and git
diff HEAD HEAD^. MC uses the latter, the snapshot is the former.

frank

> Paolo
>
>> There doesn't appear to be a BOM before the UCS-4 so I wonder if we
>> can detect it or not. Maybe it is time to use more of MontiCello to
>> read these files directly.
>>
>> ideas?
>>
>> holger
>>
>>
>>
>> [1]http://www.squeaksource.com/IliadDev/Iliad-Core0.9.1-SebastienAudier.5.mcz
>>
>> _______________________________________________
>> help-smalltalk mailing list
>> [hidden email]
>> https://lists.gnu.org/mailman/listinfo/help-smalltalk
>>
>
>

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Paolo Bonzini-2

Re: [Pharo-project] Fun with Pharo generated source.st

Il 05/05/2013 12:06, Frank Shearar ha scritto:

> On 5 May 2013 09:54, Paolo Bonzini <[hidden email]> wrote:
>> Il 04/05/2013 18:51, Holger Hans Peter Freyther ha scritto:
>>> Hi,
>>>
>>> I am trying to convert/import all of Iliad (since the development had
>>> moved to Pharo) and I stumble up-on an issue I already had when I tried
>>> to convert Aida.
>>>
>>> This[1] monticello file in line 6417 starts to use UCS-4 for a string
>>> and then stops at some characters later. Importing the file using
>>> FileStream is failing in Pharo as well.
>>
>> And how does monticello file it in then?!? I'm adding the Pharo list.
>
> Monticello doesn't use the snapshot. The snapshot's stored in addition
> to the "real" MC stuff, containing the changes that the mcz defines.
>
> It's sorta-kinda like the difference between your working copy and git
> diff HEAD HEAD^. MC uses the latter, the snapshot is the former.

But it's still a Pharo bug that the snapshot makes no sense, right?

For GNU Smalltalk we can simply interpret a NUL as the first byte of an
UTF-32BE character, and convert it to UTF-8. It's really ugly, but with
a suitable comment it can work.

Paolo

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