Getopt::WonderBra - Lift and Separate Command Line Options
use Getopt::WonderBra; @ARGV = getopt( 'opts:-:', @ARGV ); sub help() { print "Useless help message"; }; sub version() { print "Useless version message"; }; while ( ( $_ = shift ) ne '--' ) { if (/^-o$/) { $opt_o++ } elsif (/^-p$/) { $opt_p++ } elsif (/^-t$/) { $opt_t++ } elsif (/^-s$/) { push( @opt_s, shift ); } elsif (/^--/) { push( @opt_long, $_ ); } else { die 'I do not grok -', $_; } } print "-o given $opt_o times" if $opt_o; print "-p given $opt_p times" if $opt_p; print "-t given $opt_t times" if $opt_t; print "-s given with arg $_" for @opt_s; print "long opt $_ given" for @opt_long; print ""; print " param: $_" for @ARGV;
perl5.008006, Carp, Exporter
getopt($@)
See eg/WonderBra.pl for an example of usage.
There just weren't enough command line processessing modules, so I had to write my own. Actually, it exists because it made it easy to port shell scripts to perl: it acts just like the getopt program. Oddly, none of the modules that are actually named after it do. (Though some act like the C function) The following sequence chops your args up and gives 'em to you straight:
main::help() must exist prior to calling getopt(). It is wrapped by this module. This is done to ensure correct behavior for programs that use getopt. (e.g. error messages to stdout if --help in specified, so $ foo --help | less has the desired results)
main::help() is replaced by a wrapper that will exit the program. If it gets args, it will select STDERR, call your help function, print the passed args, and exit non-zero.
Otherwise, it will select STDOUT, call your help function, and exit non-zero.
Note that the program will exit if you call help after calling getopt, as well. This is not a bug. It's for issuing error messages while handling the parsed args.
The wrapper sub never returns.
If you define a main::version() sub, it will be called if the user specified --version, and the program will terminate.
STDOUT will always be selected.
To install Getopt::WonderBra, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Getopt::WonderBra
CPAN shell
perl -MCPAN -e shell install Getopt::WonderBra
For more information on module installation, please visit the detailed CPAN module installation guide.