[LRUG] UTF8 errors parsing mail file

[George Drummond]

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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> Chat mailing list
> Chat at lists.lrug.org
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