mirror of
https://github.com/moparisthebest/wget
synced 2024-07-03 16:38:41 -04:00
49 lines
983 B
Perl
Executable File
49 lines
983 B
Perl
Executable File
#!/usr/bin/perl -n
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# NOTE the use of -n above; this script is called in a loop.
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use warnings;
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use strict;
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our $scanning;
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our %used_chars;
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BEGIN {
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$scanning = 0;
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%used_chars = ();
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open STDIN, "../src/main.c" or die "main.c: $!\n";
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}
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if (/^static struct cmdline_option option_data/) {
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$scanning = 1;
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}
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elsif (/[}];/) {
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$scanning = 0;
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}
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elsif (
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$scanning &&
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/^[\t ]*\{ "[^"]*", '(.)', OPT_[A-Z0-9_]*, /
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) {
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$used_chars{$1} = 1;
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}
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END {
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my $cols = 0;
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my $max_cols = 13;
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my $opt_chars =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789%+/";
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print "Free chars:\n\t";
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for (my $i = 0; $i < length $opt_chars; ++$i, ++$cols) {
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if ($cols == $max_cols) {
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$cols = 0;
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print "\n\t";
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}
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my $opt = substr($opt_chars,$i,1);
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print ' ';
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if (!$used_chars{ $opt }) {
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print $opt;
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} else {
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print ' ';
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}
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}
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print "\n";
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}
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