El 20 jul 2021, a las 11:45, Sven Van Caekenberghe <sven@stfx.eu> escribi��:

On 20 Jul 2021, at 11:03, Sven Van Caekenberghe <sven@stfx.eu> wrote:

Hi Tim,

An introduction to this part of the system is in https://ci.inria.fr/pharo-contribution/job/EnterprisePharoBook/lastSuccessfulBuild/artifact/book-result/Zinc-Encoding-Meta/Zinc-Encoding-Meta.html [Character Encoding and Resource Meta Description] from the "Enterprise Pharo" book.

The error means that a file that you try to read as UTF-8 does contain things that are invalid with respect to the UTF-8 standard.

Are you sure the file is in UTF-8, maybe it is in ASCII, Latin-1 or something else ?

It is possible to customise the encoding to something different than the default UTF-8. For non-UTF encoders, there is a strict/lenient option to disallow/allow illegal stuff (but then you will get these in your strings).

I can show you how to do that if you want.

'/var/log/system.log' asFileReference readStreamDo: [ :in | in upToEnd ].

'/var/log/system.log' asFileReference binaryReadStreamDo: [ :in |
(ZnCharacterReadStream on: in encoding: #ascii) upToEnd ].

'/var/log/system.log' asFileReference binaryReadStreamDo: [ :in |
(ZnCharacterReadStream on: in encoding: ZnCharacterEncoder ascii beLenient) upToEnd ].

There is also readStreamEncoded:[do:], which is a bit more concise but does the same :)

HTH

Sven

On 20 Jul 2021, at 10:31, Tim Mackinnon <tim@testit.works> wrote:

Hi - I��m doing a bit of log file processing with Pharo - and I��ve hit an unexpected error and am wondering what the best way to approach it is.

It seems that I have a log file that has unexpected characters, and so my readStream loop that reads lines gets an error: "ZnInvalidUTF8: Illegal continuation byte for utf-8 encoding��.

For some reason this file (unlike my others) seems to contain characters that it shouldn��t - but what is the best way for me to continue processing? Should I be opening my files in a different way - or can I resume the error somehow- I��m not familiar with this area of Pharo and am after a bit of advice.

My code is like this (and I get the error when doing nextLine)

parseStream: aFileStream with: aBlock
| line items |
[ (line := aFileStream nextLine) isNil ]
whileFalse: [
items := $/ split: line.
items size = 3 ifTrue: [aBlock value: items]]

My stream is created like this:

firmEfs := (pathName , '/' , firmName , '_files') asFileReference.
details parseStream: firmEfs readStream.

Should I be opening the stream a bit differently - or can I catch that encoding error and resume it with some safe character?

Thanks for any help.

Tim