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inc/inc_Module-Build/Module/Build/ModuleInfo.pm  view on Meta::CPAN

# -*- mode: cperl; tab-width: 8; indent-tabs-mode: nil; basic-offset: 2 -*-
# vim:ts=8:sw=2:et:sta:sts=2
package Module::Build::ModuleInfo;

# This module provides routines to gather information about
# perl modules (assuming this may be expanded in the distant
# parrot future to look at other types of modules).

use strict;
use vars qw($VERSION);
$VERSION = '0.3603';
$VERSION = eval $VERSION;

use File::Spec;
use IO::File;
use Module::Build::Version;

my $V_NUM_REGEXP = qr{v?[0-9._]+};  # crudely, a v-string or decimal

my $PKG_REGEXP  = qr{   # match a package declaration
  ^[\s\{;]*             # intro chars on a line
  package               # the word 'package'
  \s+                   # whitespace
  ([\w:]+)              # a package name
  \s*                   # optional whitespace
  ($V_NUM_REGEXP)?        # optional version number
  \s*                   # optional whitesapce
  ;                     # semicolon line terminator
}x;

my $VARNAME_REGEXP = qr{ # match fully-qualified VERSION name
  ([\$*])         # sigil - $ or *
  (
    (             # optional leading package name
      (?:::|\')?  # possibly starting like just :: (Ì  la $::VERSION)
      (?:\w+(?:::|\'))*  # Foo::Bar:: ...
    )?
    VERSION
  )\b
}x;

my $VERS_REGEXP = qr{ # match a VERSION definition
  (?:
    \(\s*$VARNAME_REGEXP\s*\) # with parens
  |
    $VARNAME_REGEXP           # without parens
  )
  \s*
  =[^=~]  # = but not ==, nor =~
}x;


sub new_from_file {
  my $class    = shift;
  my $filename = File::Spec->rel2abs( shift );

  return undef unless defined( $filename ) && -f $filename;
  return $class->_init(undef, $filename, @_);
}

sub new_from_module {
  my $class   = shift;
  my $module  = shift;
  my %props   = @_;

  $props{inc} ||= \@INC;