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53 lines
1.2 KiB
Perl
Executable File
53 lines
1.2 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# Quick and dirty by :pragma
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my ($arguments, $response, $invalid);
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my @valid_keywords = (
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'sin', 'cos', 'tan', 'atan', 'exp', 'int', 'hex', 'oct', 'log', 'sqrt',
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'floor', 'ceil', 'asin', 'acos', 'log10', 'sinh', 'cosh', 'tanh', 'abs',
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'pi', 'deg2rad', 'rad2deg', 'atan2'
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);
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if ($#ARGV < 0)
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{
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print "Dumbass.\n";
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exit 0;
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}
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$arguments = join(' ', @ARGV);
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my $orig_arguments = $arguments;
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$arguments =~ s/answer.*question of life(,? the universe and everything)?\s?/42/gi;
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$arguments =~ s/meaning of (life|existence|everything)?/42/gi;
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if($arguments =~ m/([\$`\|{}"'#@=])/) {
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$invalid = $1;
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} else {
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while($arguments =~ /([a-zA-Z0-9]+)/g) {
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my $keyword = $1;
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next if $keyword =~ m/^[0-9]+$/;
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$invalid = $keyword and last if not grep { /^$keyword$/ } @valid_keywords;
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}
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}
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if($invalid) {
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print "Illegal symbol '$invalid' in equation\n";
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exit 1;
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}
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$response = eval("use POSIX qw/ceil floor/; use Math::Trig; use Math::Complex;" . $arguments);
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if($@) {
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my $error = $@;
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$error =~ s/[\n\r]+//g;
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$error =~ s/ at \(eval \d+\) line \d+.//;
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$error =~ s/ at EOF$//;
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$error =~ s/Died at .*//;
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print $error;
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exit 1;
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}
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print "$orig_arguments = $response\n";
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