ExtUtils::Installed - Inventory management of installed modules
- 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");
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.
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
, and what the value is of the PERL5LIB environment variable.
Unless specified otherwise all method can be called as class methods, or as object methods. If called as class methods then the "default" object will be used, and if necessary created using the current processes %Config and @INC. See the 'default' option to new() for details.
This takes optional named parameters. Without parameters, this
searches for all the installed .packlists on the system using
and the default module search
. The packlists are read using the
If the named parameter
it should be a reference to a hash which contains all information
usually found in
. For example, you can obtain
the configuration information for a separate perl installation and
pass that in.
Similarly, the parameter
may be a reference to an
array which is used in place of the default module search paths
Note: You probably do not want to use these options alone, almost always you will want to set both together.
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.
Finally there is the 'default', and the related 'default_get' and 'default_set'
options. These options control the "default" object which is provided by the
class interface to the methods. Setting
to true tells the constructor
to return the default object if it is defined. Setting
to true tells
the constructor to make the default object the constructed object. Setting the
option is like setting both to true. This is used primarily internally
and probably isn't interesting to any real user.
This returns a list of the names of all the installed modules. The perl 'core' is given the special name 'Perl'.
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.
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.
This is identical in operation to directories(), except that it includes all the intermediate directories back up to the specified directories.
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
This returns the ExtUtils::Packlist object for the specified module.
This returns the version number for the specified module.
See the example in ExtUtils::Packlist.
Alan Burlison <Alan.Burlison@uk.sun.com>