67 lines
1.6 KiB
Perl
Executable File
67 lines
1.6 KiB
Perl
Executable File
#!/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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my $indata;
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my $var_name = "stdin";
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my $full_output = (@ARGV > 0 && $ARGV[0] eq '-i') ? shift @ARGV : undef;
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{
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local $/;
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my $fh;
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if (@ARGV) {
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$var_name = $ARGV[0];
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open($fh, '<:raw', $var_name) || die("xxdi.pl: Unable to open $var_name: $!\n");
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} elsif (! -t STDIN) {
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$fh = \*STDIN;
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undef $full_output;
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} else {
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die "usage: xxdi.pl [-i] [infile]\n";
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}
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$indata = readline $fh;
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close $fh;
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}
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my $len_data = length($indata);
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my $num_digits_per_line = 12;
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my $outdata = "";
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# Use the variable name of the file we read from, converting '/' and '.
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# to '_', or, if this is stdin, just use "stdin" as the name.
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$var_name =~ s/\//_/g;
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$var_name =~ s/\./_/g;
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$var_name = "__$var_name" if $var_name =~ /^\d/;
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$outdata = "unsigned char $var_name\[] = { " if $full_output;
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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 = substr($outdata, 0, -1)."\n ";
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}
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$outdata .= sprintf("0x%.2x, ", ord(substr($indata, $key, 1)));
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}
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$outdata = substr($outdata, 0, -2);
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$outdata .= "\n";
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$outdata .= "};\nunsigned int $var_name\_len = $len_data;\n" if $full_output;
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binmode STDOUT;
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print $outdata;
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