Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Actually, I would be a little surprised to find a BOM in combination with UTF-8 (as the encoding is just a sequence of bytes). Normally, you'd find BOMs with the "ucs-2" encodings, as used by Windows in many places. With those, we have a 16-bit value per char, and thus the internal byte ordering matters.

Anyway, what you could try is something like this (not sure if this is the most elegant way, but it should work...   Update: it isn't :) - apparently there's File::BOM)

sub openfile_unicode { my $filename = shift; open my $fh, "<:raw", $filename or die "Cannot open $filename: $!\ +n"; my $bom; read $fh, $bom, 2; if ($bom eq "\xff\xfe" || $bom eq "\xfe\xff") { # BOM present? # if so, determine if little- or big-endian my $encoding = "ucs-2" . ($bom eq "\xff\xfe" ? "le":"be"); binmode $fh, ":encoding($encoding)"; } else { # otherwise assume UTF-8 # reopen file close $fh; $fh = undef; open $fh, "<:encoding(utf8)", $filename or die "Cannot open $f +ilename: $!\n"; } return $fh; } my $fh = openfile_unicode("somefile"); while (my $line = <$fh>) { # ... }

In reply to Re: UTF-8 text files with Byte Order Mark by almut
in thread UTF-8 text files with Byte Order Mark by muba

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    [davido]: If you ever doubt the progress made in CPU technology: I have a script that runs in 2m20s on a Core2-Duo with 8GB RAM and an SSD. On an i7-2700K, also with SSD, same script runs in 12.5s.
    [davido]: That's a 2nd Gen i7, but it is OC'ed from 3.5GHz to 4.6. ...things break down for awhile following 2nd gen though; the 2nd gen i7 2700k beats my Haswell (4th gen) i7 laptop by about 30%

    How do I use this? | Other CB clients
    Other Users?
    Others chanting in the Monastery: (8)
    As of 2017-11-22 15:10 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      In order to be able to say "I know Perl", you must have:













      Results (326 votes). Check out past polls.

      Notices?