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51 lines
1.3 KiB
Perl
51 lines
1.3 KiB
Perl
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#!/usr/bin/env perl
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#
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# xxdi.pl - perl implementation of 'xxd -i' mode
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#
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# Copyright 2013 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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# Copyright 2013 Linux Foundation
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#
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# Released under the GPLv2.
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#
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# Implements the "basic" functionality of 'xxd -i' in perl to keep build
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# systems from having to build/install/rely on vim-core, which not all
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# distros want to do. But everyone has perl, so use it instead.
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#
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use strict;
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use warnings;
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use File::Slurp qw(slurp);
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my $indata = slurp(@ARGV ? $ARGV[0] : \*STDIN);
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my $len_data = length($indata);
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my $num_digits_per_line = 12;
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my $var_name;
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my $outdata;
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# Use the variable name of the file we read from, converting '/' and '.
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# to '_', or, if this is stdin, just use "stdin" as the name.
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if (@ARGV) {
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$var_name = $ARGV[0];
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$var_name =~ s/\//_/g;
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$var_name =~ s/\./_/g;
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} else {
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$var_name = "stdin";
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}
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$outdata .= "unsigned char $var_name\[] = {";
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# trailing ',' is acceptable, so instead of duplicating the logic for
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# just the last character, live with the extra ','.
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for (my $key= 0; $key < $len_data; $key++) {
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if ($key % $num_digits_per_line == 0) {
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$outdata .= "\n\t";
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}
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$outdata .= sprintf("0x%.2x, ", ord(substr($indata, $key, 1)));
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}
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$outdata .= "\n};\nunsigned int $var_name\_len = $len_data;\n";
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binmode STDOUT;
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print {*STDOUT} $outdata;
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