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ExtUtils::Installed(3pm)              Perl Programmers Reference Guide              ExtUtils::Installed(3pm)



NAME
       ExtUtils::Installed - Inventory management of installed modules

SYNOPSIS
          use ExtUtils::Installed;
          my ($inst) = ExtUtils::Installed->new();
          my (@modules) = $inst->modules();
          my (@missing) = $inst->validate("DBI");
          my $all_files = $inst->files("DBI");
          my $files_below_usr_local = $inst->files("DBI", "all", "/usr/local");
          my $all_dirs = $inst->directories("DBI");
          my $dirs_below_usr_local = $inst->directory_tree("DBI", "prog");
          my $packlist = $inst->packlist("DBI");

DESCRIPTION
       ExtUtils::Installed  provides a standard way to find out what core and module files have been
       installed.  It uses the information stored in .packlist files created during installation to provide
       this information.  In addition it provides facilities to classify the installed files and to extract
       directory information from the .packlist files.

USAGE
       The new() function searches for all the installed .packlists on the system, and stores their con-tents. contents.
       tents. The .packlists can be queried with the functions described below. Where it searches by default
       is determined by the settings found in %Config::Config, and what the value is of the PERL5LIB envi-ronment environment
       ronment variable.

FUNCTIONS
       new()
           This takes optional named parameters. Without parameters, this searches for all the installed
           .packlists on the system using information from %Config::Config and the default module search
           paths @INC. The packlists are read using the ExtUtils::Packlist module.

           If the named parameter "config_override" is specified, it should be a reference to a hash which
           contains all information usually found in %Config::Config. For example, you can obtain the con-figuration configuration
           figuration information for a separate perl installation and pass that in.

               my $yoda_cfg  = get_fake_config('yoda');
               my $yoda_inst = ExtUtils::Installed->new(config_override=>$yoda_cfg);

           Similarly, the parameter "inc_override" may be a reference to an array which is used in place of
           the default module search paths from @INC.

               use Config;
               my @dirs = split(/\Q$Config{path_sep}\E/, $ENV{PERL5LIB});
               my $p5libs = ExtUtils::Installed->new(inc_override=>\@dirs);

           The parameter c<extra_libs> can be used to specify additional paths to search for installed mod-ules. modules.
           ules. For instance

               my $installed = ExtUtils::Installed->new(extra_libs=>["/my/lib/path"]);

           This should only be necessary if "/my/lib/path" is not in PERL5LIB.

       modules()
           This returns a list of the names of all the installed modules.  The perl 'core' is given the spe-cial special
           cial name 'Perl'.

       files()
           This takes one mandatory parameter, the name of a module.  It returns a list of all the filenames
           from the package.  To obtain a list of core perl files, use the module name 'Perl'.  Additional
           parameters are allowed.  The first is one of the strings "prog", "doc" or "all", to select either
           just program files, just manual files or all files.  The remaining parameters are a list of
           directories. The filenames returned will be restricted to those under the specified directories.

       directories()
           This takes one mandatory parameter, the name of a module.  It returns a list of all the directo-ries directories
           ries from the package.  Additional parameters are allowed.  The first is one of the strings
           "prog", "doc" or "all", to select either just program directories, just manual directories or all
           directories.  The remaining parameters are a list of directories. The directories returned will
           be restricted to those under the specified directories.  This method returns only the leaf direc-tories directories
           tories that contain files from the specified module.

       directory_tree()
           This is identical in operation to directories(), except that it includes all the intermediate
           directories back up to the specified directories.

       validate()
           This takes one mandatory parameter, the name of a module.  It checks that all the files listed in
           the modules .packlist actually exist, and returns a list of any missing files.  If an optional
           second argument which evaluates to true is given any missing files will be removed from the
           .packlist

       packlist()
           This returns the ExtUtils::Packlist object for the specified module.

       version()
           This returns the version number for the specified module.

EXAMPLE
       See the example in ExtUtils::Packlist.

AUTHOR
       Alan Burlison <[email protected]>



perl v5.8.9                                      2001-09-21                         ExtUtils::Installed(3pm)