[LRUG] UTF8 errors parsing mail file

[Jonathan]

While we're on the subject, this is an old, but still quite a good blog
post on character sets: http://www.joelonsoftware.com/articles/Unicode.html



On 22 August 2013 18:31, Najaf Ali <ali at happybearsoftware.com> wrote:

> > You could try tinkering with Encoding.default_external – maybe set it to
> Encoding::ASCII_8BIT and see if that helps.
>
> Theory: Since a plain ASCII file is in UTF-8 encoding there are definitely
> weird non-ASCII bytes in the file. Doing the above will leave the weird
> bytes in but they'll manifest as whatever the ASCII/ISO-8859-1 of the
> individual bytes are. So for example, if the weird bytes are a UTF-16 byte
> order mark, you might see "þÿ" in the output. I need to get out and spend
> more time with nature.
>
>
> On Thu, Aug 22, 2013 at 5:05 PM, Leo Cassarani <
> leonardo.cassarani at gmail.com> wrote:
>
>> Ruby 2.0 has changed the default encoding of Ruby files to be UTF-8. So
>> the magic comment you suggested should be implicit in all files, unless
>> specified otherwise.
>>
>> It sounds like, because your script is running under UTF-8 encoding, it's
>> trying to convert the strings it finds to UTF-8, and throwing a fit when it
>> finds something that it can't convert.
>>
>> You could try tinkering with Encoding.default_external – maybe set it to
>> Encoding::ASCII_8BIT and see if that helps.
>>
>> Leo
>>
>>
>> On 22 Aug 2013, at 16:24, George Drummond <drummond at rentify.com> wrote:
>>
>> Try running it with the magic UTF-8 comment at the top of the file
>>
>> # encoding: UTF-8
>>
>>
>>
>> On 22 Aug 2013, at 16:21, gvim <gvimrc at gmail.com> wrote:
>>
>> I'm encountering some UTF-8 errors in Ruby 2.0. When installing gems I
>> often see non-fatal errors relating to conversion of ASCII characters to
>> UTF-8. The following script is designed to search a large Maildir folder
>> for lines beginning with 4 word characters:
>>
>> ---------------------------------------------------------
>> dir = 'my/maildir/path'
>> Dir.chdir(dir)
>>
>> Dir.foreach(dir) do |file|
>>  next unless file =~ /^\d{4}/
>>  print "\n\n************* Opening #{file} *************\n"
>>  fh = File.open(file)
>>  while fh.gets do
>>    print if $_ =~ /^\w{4}\b/
>>  end
>>  fh.close
>> end
>>
>> -------------------------------------------------------------
>>
>>
>> After successfully scanning 7 email files it dies with a UTF-8 error:
>>
>>
>> ************* Opening 1270516984.M407293P18051.mac,S=1601,W=1645:2,Sb
>> *************
>> Paul
>> ./1.rb:13:in `block in <main>': invalid byte sequence in UTF-8
>> (ArgumentError)
>> from ./1.rb:8:in `foreach'
>>  from ./1.rb:8:in `<main>'
>>
>>
>> The equivalent Perl script parses the whole directory without any errors:
>>
>> ------------------------------------------------------------
>> use 5.016;
>> use autodie;
>>
>> my $dir = 'my/mail/path';
>> chdir $dir;
>> opendir my $dh, $dir;
>>
>> while (readdir $dh) {
>>  next unless /^\d{4}/;
>>  open my $fh, '<', $_;
>>  say "\n\n************* Opening $_ *************";
>>  while (<$fh>) {
>>    chomp;
>>    say if /^\w{4}\s/;
>>  }
>>  close $fh;
>> }
>> closedir $dh;
>>
>> -------------------------------------------------------------
>>
>> gvim
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>
>
> --
> Ali, http://happybearsoftware.com
>
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