charsethero : convert mixed utf-8 and iso-latin content to utf-8
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/perl | |
# source: http://www.perlmonks.org/?node_id=642617 | |
#use strict; | |
# mixed string with ISO 8859-1 und UTF-8: | |
#my $test_string = "Das Å (auch \"bolle-Å\" genannt, was soviel bedeutet wie \"Kringel-Å\") ist mit der ". | |
#D force_latin("dänischen Rechtschreibreform von 1948 eingeführt worden."); | |
#print "Source: $test_string\n"; | |
#Dprint "UTF : ".force_utf8($test_string)."\n"; | |
#pr#Dint "ISO : ".force_latin($test_string)."\n"; | |
#*/ | |
foreach $line ( <STDIN> ) { | |
print force_utf8($line); | |
} | |
sub force_utf8 { | |
my $string = shift; | |
$string =~ s/([\xc0-\xdf][\x80-\xbf]{1}|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3}|[\x80-\xff])/&encode_char_utf8($1)/ge; | |
return $string; | |
} | |
sub force_latin { | |
my $string = shift; | |
$string =~ s/([\xc0-\xdf][\x80-\xbf]{1}|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3}|[\x80-\xff])/&decode_char_utf8($1)/ge; | |
return $string; | |
} | |
sub encode_char_utf8 { | |
my $char = shift; | |
if($char =~ /^([\xc0-\xdf][\x80-\xbf]{1}|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})$/) { | |
return $char; | |
} | |
my $value = ord($char); | |
return chr(($value>>6) | 0xc0).chr(0x80 | ($value & 0x3f)); | |
} | |
sub decode_char_utf8 { | |
my $char = shift; | |
if($char =~ /^([\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})$/) { | |
return ''; | |
} elsif($char =~ /^([\xc0-\xdf])([\x80-\xbf])$/) { | |
my $value = ((ord($1) & 0x1f)<<6)+(ord($2) & 0x3f); | |
if($value<256) { | |
return chr($value); | |
} else { | |
return ''; | |
} | |
} else { | |
return $char; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment