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#!/usr/bin/perl eval 'exec /usr/bin/perl -S $0 ${1+"$@"}' if 0; # ^ Run only under a shell #!./perl use 5.008001; BEGIN { pop @INC if $INC[-1] eq '.' } use strict; use warnings; use Encode; use Getopt::Std; use Carp; use Encode::Guess; $Getopt::Std::STANDARD_HELP_VERSION = 1; my %opt; getopts( "huSs:", \%opt ); my @suspect_list; list_valid_suspects() and exit if $opt{S}; @suspect_list = split /:,/, $opt{s} if $opt{s}; HELP_MESSAGE() if $opt{h}; HELP_MESSAGE() unless @ARGV; do_guess($_) for @ARGV; sub read_file { my $filename = shift; local $/; open my $fh, '<:raw', $filename or croak "$filename:$!"; my $content = <$fh>; close $fh; return $content; } sub do_guess { my $filename = shift; my $data = read_file($filename); my $enc = guess_encoding( $data, @suspect_list ); if ( !ref($enc) && $opt{u} ) { return 1; } print "$filename\t"; if ( ref($enc) ) { print $enc->mime_name(); } else { print "unknown"; } print "\n"; return 1; } sub list_valid_suspects { print join( "\n", Encode->encodings(":all") ); print "\n"; return 1; } sub HELP_MESSAGE { exec 'pod2usage', $0 or die "pod2usage: $!" } __END__ =head1 NAME encguess - guess character encodings of files =head1 VERSION $Id: encguess,v 0.3 2020/12/02 01:28:17 dankogai Exp $ =head1 SYNOPSIS encguess [switches] filename... =head2 SWITCHES =over 2 =item -h show this message and exit. =item -s specify a list of "suspect encoding types" to test, separated by either C<:> or C<,> =item -S output a list of all acceptable encoding types that can be used with the -s param =item -u suppress display of unidentified types =back =head2 EXAMPLES: =over 2 =item * Guess encoding of a file named C<test.txt>, using only the default suspect types. encguess test.txt =item * Guess the encoding type of a file named C<test.txt>, using the suspect types C<euc-jp,shiftjis,7bit-jis>. encguess -s euc-jp,shiftjis,7bit-jis test.txt encguess -s euc-jp:shiftjis:7bit-jis test.txt =item * Guess the encoding type of several files, do not display results for unidentified files. encguess -us euc-jp,shiftjis,7bit-jis test*.txt =back =head1 DESCRIPTION The encoding identification is done by checking one encoding type at a time until all but the right type are eliminated. The set of encoding types to try is defined by the -s parameter and defaults to ascii, utf8 and UTF-16/32 with BOM. This can be overridden by passing one or more encoding types via the -s parameter. If you need to pass in multiple suspect encoding types, use a quoted string with the a space separating each value. =head1 SEE ALSO L<Encode::Guess>, L<Encode::Detect> =head1 LICENSE AND COPYRIGHT Copyright 2015 Michael LaGrasta and Dan Kogai. This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at: L<http://www.perlfoundation.org/artistic_license_2_0> =cut