147 lines
2.9 KiB
Perl
147 lines
2.9 KiB
Perl
#!perl
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use 5.008001;
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BEGIN { pop @INC if $INC[-1] eq '.' }
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use strict;
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use warnings;
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use Encode;
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use Getopt::Std;
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use Carp;
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use Encode::Guess;
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$Getopt::Std::STANDARD_HELP_VERSION = 1;
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my %opt;
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getopts( "huSs:", \%opt );
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my @suspect_list;
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list_valid_suspects() and exit if $opt{S};
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@suspect_list = split /:,/, $opt{s} if $opt{s};
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HELP_MESSAGE() if $opt{h};
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HELP_MESSAGE() unless @ARGV;
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do_guess($_) for @ARGV;
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sub read_file {
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my $filename = shift;
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local $/;
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open my $fh, '<:raw', $filename or croak "$filename:$!";
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my $content = <$fh>;
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close $fh;
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return $content;
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}
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sub do_guess {
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my $filename = shift;
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my $data = read_file($filename);
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my $enc = guess_encoding( $data, @suspect_list );
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if ( !ref($enc) && $opt{u} ) {
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return 1;
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}
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print "$filename\t";
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if ( ref($enc) ) {
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print $enc->mime_name();
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}
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else {
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print "unknown";
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}
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print "\n";
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return 1;
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}
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sub list_valid_suspects {
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print join( "\n", Encode->encodings(":all") );
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print "\n";
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return 1;
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}
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sub HELP_MESSAGE {
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exec 'pod2usage', $0 or die "pod2usage: $!"
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}
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__END__
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=head1 NAME
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encguess - guess character encodings of files
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=head1 VERSION
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$Id: encguess,v 0.2 2016/08/04 03:15:58 dankogai Exp $
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=head1 SYNOPSIS
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encguess [switches] filename...
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=head2 SWITCHES
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=over 2
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=item -h
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show this message and exit.
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=item -s
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specify a list of "suspect encoding types" to test,
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seperated by either C<:> or C<,>
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=item -S
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output a list of all acceptable encoding types that can be used with
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the -s param
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=item -u
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suppress display of unidentified types
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=back
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=head2 EXAMPLES:
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=over 2
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=item *
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Guess encoding of a file named C<test.txt>, using only the default
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suspect types.
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encguess test.txt
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=item *
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Guess the encoding type of a file named C<test.txt>, using the suspect
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types C<euc-jp,shiftjis,7bit-jis>.
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encguess -s euc-jp,shiftjis,7bit-jis test.txt
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encguess -s euc-jp:shiftjis:7bit-jis test.txt
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=item *
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Guess the encoding type of several files, do not display results for
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unidentified files.
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encguess -us euc-jp,shiftjis,7bit-jis test*.txt
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=back
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=head1 DESCRIPTION
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The encoding identification is done by checking one encoding type at a
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time until all but the right type are eliminated. The set of encoding
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types to try is defined by the -s parameter and defaults to ascii,
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utf8 and UTF-16/32 with BOM. This can be overridden by passing one or
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more encoding types via the -s parameter. If you need to pass in
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multiple suspect encoding types, use a quoted string with the a space
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separating each value.
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=head1 SEE ALSO
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L<Encode::Guess>, L<Encode::Detect>
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=head1 LICENSE AND COPYRIGHT
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Copyright 2015 Michael LaGrasta and Dan Kogai.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the the Artistic License (2.0). You may obtain a
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copy of the full license at:
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L<http://www.perlfoundation.org/artistic_license_2_0>
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=cut
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