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- package ExtUtils::Installed;
-
- use 5.00503;
- use strict;
- use Carp qw();
- use ExtUtils::Packlist;
- use ExtUtils::MakeMaker;
- use Config;
- use File::Find;
- use File::Basename;
- use File::Spec;
-
- my $Is_VMS = $^O eq 'VMS';
- my $DOSISH = ($^O =~ /^(MSWin\d\d|os2|dos|mint)$/);
-
- require VMS::Filespec if $Is_VMS;
-
- use vars qw($VERSION);
- $VERSION = '0.08';
-
- sub _is_prefix {
- my ($self, $path, $prefix) = @_;
- return unless defined $prefix && defined $path;
-
- if( $Is_VMS ) {
- $prefix = VMS::Filespec::unixify($prefix);
- $path = VMS::Filespec::unixify($path);
- }
-
- # Sloppy Unix path normalization.
- $prefix =~ s{/+}{/}g;
- $path =~ s{/+}{/}g;
-
- return 1 if substr($path, 0, length($prefix)) eq $prefix;
-
- if ($DOSISH) {
- $path =~ s|\\|/|g;
- $prefix =~ s|\\|/|g;
- return 1 if $path =~ m{^\Q$prefix\E}i;
- }
- return(0);
- }
-
- sub _is_doc {
- my ($self, $path) = @_;
- my $man1dir = $Config{man1direxp};
- my $man3dir = $Config{man3direxp};
- return(($man1dir && $self->_is_prefix($path, $man1dir))
- ||
- ($man3dir && $self->_is_prefix($path, $man3dir))
- ? 1 : 0)
- }
-
- sub _is_type {
- my ($self, $path, $type) = @_;
- return 1 if $type eq "all";
-
- return($self->_is_doc($path)) if $type eq "doc";
-
- if ($type eq "prog") {
- return($self->_is_prefix($path, $Config{prefix} || $Config{prefixexp})
- &&
- !($self->_is_doc($path))
- ? 1 : 0);
- }
- return(0);
- }
-
- sub _is_under {
- my ($self, $path, @under) = @_;
- $under[0] = "" if (! @under);
- foreach my $dir (@under) {
- return(1) if ($self->_is_prefix($path, $dir));
- }
-
- return(0);
- }
-
- sub new {
- my ($class) = @_;
- $class = ref($class) || $class;
- my $self = {};
-
- my $archlib = $Config{archlibexp};
- my $sitearch = $Config{sitearchexp};
-
- # File::Find does not know how to deal with VMS filepaths.
- if( $Is_VMS ) {
- $archlib = VMS::Filespec::unixify($archlib);
- $sitearch = VMS::Filespec::unixify($sitearch);
- }
-
- if ($DOSISH) {
- $archlib =~ s|\\|/|g;
- $sitearch =~ s|\\|/|g;
- }
-
- # Read the core packlist
- $self->{Perl}{packlist} =
- ExtUtils::Packlist->new( File::Spec->catfile($archlib, '.packlist') );
- $self->{Perl}{version} = $Config{version};
-
- # Read the module packlists
- my $sub = sub {
- # Only process module .packlists
- return if $_ ne ".packlist" || $File::Find::dir eq $archlib;
-
- # Hack of the leading bits of the paths & convert to a module name
- my $module = $File::Find::name;
-
- $module =~ s!\Q$archlib\E/?auto/(.*)/.packlist!$1!s or
- $module =~ s!\Q$sitearch\E/?auto/(.*)/.packlist!$1!s;
- my $modfile = "$module.pm";
- $module =~ s!/!::!g;
-
- # Find the top-level module file in @INC
- $self->{$module}{version} = '';
- foreach my $dir (@INC) {
- my $p = File::Spec->catfile($dir, $modfile);
- if (-r $p) {
- $module = _module_name($p, $module) if $Is_VMS;
-
- require ExtUtils::MM;
- $self->{$module}{version} = MM->parse_version($p);
- last;
- }
- }
-
- # Read the .packlist
- $self->{$module}{packlist} =
- ExtUtils::Packlist->new($File::Find::name);
- };
-
- my(@dirs) = grep { -e } ($archlib, $sitearch);
- find($sub, @dirs) if @dirs;
-
- return(bless($self, $class));
- }
-
- # VMS's non-case preserving file-system means the package name can't
- # be reconstructed from the filename.
- sub _module_name {
- my($file, $orig_module) = @_;
-
- my $module = '';
- if (open PACKFH, $file) {
- while (<PACKFH>) {
- if (/package\s+(\S+)\s*;/) {
- my $pack = $1;
- # Make a sanity check, that lower case $module
- # is identical to lowercase $pack before
- # accepting it
- if (lc($pack) eq lc($orig_module)) {
- $module = $pack;
- last;
- }
- }
- }
- close PACKFH;
- }
-
- print STDERR "Couldn't figure out the package name for $file\n"
- unless $module;
-
- return $module;
- }
-
-
-
- sub modules {
- my ($self) = @_;
-
- # Bug/feature of sort in scalar context requires this.
- return wantarray ? sort keys %$self : keys %$self;
- }
-
- sub files {
- my ($self, $module, $type, @under) = @_;
-
- # Validate arguments
- Carp::croak("$module is not installed") if (! exists($self->{$module}));
- $type = "all" if (! defined($type));
- Carp::croak('type must be "all", "prog" or "doc"')
- if ($type ne "all" && $type ne "prog" && $type ne "doc");
-
- my (@files);
- foreach my $file (keys(%{$self->{$module}{packlist}})) {
- push(@files, $file)
- if ($self->_is_type($file, $type) &&
- $self->_is_under($file, @under));
- }
- return(@files);
- }
-
- sub directories {
- my ($self, $module, $type, @under) = @_;
- my (%dirs);
- foreach my $file ($self->files($module, $type, @under)) {
- $dirs{dirname($file)}++;
- }
- return sort keys %dirs;
- }
-
- sub directory_tree {
- my ($self, $module, $type, @under) = @_;
- my (%dirs);
- foreach my $dir ($self->directories($module, $type, @under)) {
- $dirs{$dir}++;
- my ($last) = ("");
- while ($last ne $dir) {
- $last = $dir;
- $dir = dirname($dir);
- last if !$self->_is_under($dir, @under);
- $dirs{$dir}++;
- }
- }
- return(sort(keys(%dirs)));
- }
-
- sub validate {
- my ($self, $module, $remove) = @_;
- Carp::croak("$module is not installed") if (! exists($self->{$module}));
- return($self->{$module}{packlist}->validate($remove));
- }
-
- sub packlist {
- my ($self, $module) = @_;
- Carp::croak("$module is not installed") if (! exists($self->{$module}));
- return($self->{$module}{packlist});
- }
-
- sub version {
- my ($self, $module) = @_;
- Carp::croak("$module is not installed") if (! exists($self->{$module}));
- return($self->{$module}{version});
- }
-
-
- 1;
-
- __END__
-
- =head1 NAME
-
- ExtUtils::Installed - Inventory management of installed modules
-
- =head1 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");
-
- =head1 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.
-
- =head1 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.
-
- =head1 FUNCTIONS
-
- =over 4
-
- =item new()
-
- This takes no parameters, and searches for all the installed .packlists on the
- system. The packlists are read using the ExtUtils::packlist module.
-
- =item modules()
-
- This returns a list of the names of all the installed modules. The perl 'core'
- is given the special name 'Perl'.
-
- =item 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.
-
- =item 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.
-
- =item directory_tree()
-
- This is identical in operation to directories(), except that it includes all the
- intermediate directories back up to the specified directories.
-
- =item 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
-
- =item packlist()
-
- This returns the ExtUtils::Packlist object for the specified module.
-
- =item version()
-
- This returns the version number for the specified module.
-
- =back
-
- =head1 EXAMPLE
-
- See the example in L<ExtUtils::Packlist>.
-
- =head1 AUTHOR
-
- Alan Burlison <Alan.Burlison@uk.sun.com>
-
- =cut
-