45 lines
778 B
Perl
45 lines
778 B
Perl
#!/usr/bin/perl
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use warnings;
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use strict;
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use Getopt::Long;
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use Pod::Usage;
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use autodie;
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my $encoding;
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GetOptions('encoding=s', \$encoding) or pod2usage();
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my %hist;
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if (@ARGV) {
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readfile($_) for @ARGV;
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} else {
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readfile();
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}
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my $total = 0;
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$total += $_ for values %hist;
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binmode STDOUT, ":encoding(UTF-8)";
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for (sort keys %hist) {
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my $cp = ord;
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printf("%x %d %o %s\t%8d %f\n",
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$cp, $cp, $cp, /\p{Graph}/ ? $_ : ".", $hist{$_}, $hist{$_} / $total);
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}
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sub readfile {
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my ($filename) = @_;
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my $fh;
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if (defined $filename) {
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open $fh, "<", $filename;
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} else {
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$fh = \*STDIN;
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}
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binmode $fh, ":encoding($encoding)";
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while (<$fh>) {
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for my $c (split(//)) {
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$hist{$c}++;
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}
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}
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}
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