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

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 contents. 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 environment 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 configuration
	   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 modules. 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 special 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 directories 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 directories 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 <Alan.Burlison@uk.sun.com>

perl v5.10.0			  2007-12-18		ExtUtils::Installed(3)
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