Current File : //usr/share/perl5/vendor_perl/CPANPLUS/Internals/Utils.pm
package CPANPLUS::Internals::Utils;
use strict;
use CPANPLUS::Error;
use CPANPLUS::Internals::Constants;
use Cwd qw[chdir cwd];
use File::Copy;
use Params::Check qw[check];
use Module::Load::Conditional qw[can_load];
use Locale::Maketext::Simple Class => 'CPANPLUS', Style => 'gettext';
use version;
use vars qw[$VERSION];
$VERSION = "0.9138";
local $Params::Check::VERBOSE = 1;
=pod
=head1 NAME
CPANPLUS::Internals::Utils - convenience functions for CPANPLUS
=head1 SYNOPSIS
my $bool = $cb->_mkdir( dir => 'blah' );
my $bool = $cb->_chdir( dir => 'blah' );
my $bool = $cb->_rmdir( dir => 'blah' );
my $bool = $cb->_move( from => '/some/file', to => '/other/file' );
my $bool = $cb->_move( from => '/some/dir', to => '/other/dir' );
my $cont = $cb->_get_file_contents( file => '/path/to/file' );
my $version = $cb->_perl_version( perl => $^X );
=head1 DESCRIPTION
C<CPANPLUS::Internals::Utils> holds a few convenience functions for
CPANPLUS libraries.
=head1 METHODS
=head2 $cb->_mkdir( dir => '/some/dir' )
C<_mkdir> creates a full path to a directory.
Returns true on success, false on failure.
=cut
sub _mkdir {
my $self = shift;
my %hash = @_;
my $tmpl = {
dir => { required => 1 },
};
my $args = check( $tmpl, \%hash ) or (
error(loc( Params::Check->last_error ) ), return
);
unless( can_load( modules => { 'File::Path' => 0.0 } ) ) {
error( loc("Could not use File::Path! This module should be core!") );
return;
}
eval { File::Path::mkpath($args->{dir}) };
if($@) {
chomp($@);
error(loc(qq[Could not create directory '%1': %2], $args->{dir}, $@ ));
return;
}
return 1;
}
=pod
=head2 $cb->_chdir( dir => '/some/dir' )
C<_chdir> changes directory to a dir.
Returns true on success, false on failure.
=cut
sub _chdir {
my $self = shift;
my %hash = @_;
my $tmpl = {
dir => { required => 1, allow => DIR_EXISTS },
};
my $args = check( $tmpl, \%hash ) or return;
unless( chdir $args->{dir} ) {
error( loc(q[Could not chdir into '%1'], $args->{dir}) );
return;
}
return 1;
}
=pod
=head2 $cb->_rmdir( dir => '/some/dir' );
Removes a directory completely, even if it is non-empty.
Returns true on success, false on failure.
=cut
sub _rmdir {
my $self = shift;
my %hash = @_;
my $tmpl = {
dir => { required => 1, allow => IS_DIR },
};
my $args = check( $tmpl, \%hash ) or return;
unless( can_load( modules => { 'File::Path' => 0.0 } ) ) {
error( loc("Could not use File::Path! This module should be core!") );
return;
}
eval { File::Path::rmtree($args->{dir}) };
if($@) {
chomp($@);
error(loc(qq[Could not delete directory '%1': %2], $args->{dir}, $@ ));
return;
}
return 1;
}
=pod
=head2 $cb->_perl_version ( perl => 'some/perl/binary' );
C<_perl_version> returns the version of a certain perl binary.
It does this by actually running a command.
Returns the perl version on success and false on failure.
=cut
sub _perl_version {
my $self = shift;
my %hash = @_;
my $perl;
my $tmpl = {
perl => { required => 1, store => \$perl },
};
check( $tmpl, \%hash ) or return;
my $perl_version;
### special perl, or the one we are running under?
if( $perl eq $^X ) {
### just load the config
require Config;
$perl_version = $Config::Config{version};
} else {
my $cmd = $perl .
' -MConfig -eprint+Config::config_vars+version';
($perl_version) = (`$cmd` =~ /version='(.*)'/);
}
return $perl_version if defined $perl_version;
return;
}
=pod
=head2 $cb->_version_to_number( version => $version );
Returns a proper module version, or '0.0' if none was available.
=cut
sub _version_to_number {
my $self = shift;
my %hash = @_;
my $version;
my $tmpl = {
version => { default => '0.0', store => \$version },
};
check( $tmpl, \%hash ) or return;
$version =~ s!_!!g; # *sigh*
return $version if $version =~ /^\d*(?:\.\d+)?$/;
if ( my ($vers) = $version =~ /^(v?\d+(?:\.\d+(?:\.\d+)?)?)/ ) {
return eval { version->parse($vers)->numify };
}
return '0.0';
}
=pod
=head2 $cb->_whoami
Returns the name of the subroutine you're currently in.
=cut
sub _whoami { my $name = (caller 1)[3]; $name =~ s/.+:://; $name }
=pod
=head2 _get_file_contents( file => $file );
Returns the contents of a file
=cut
sub _get_file_contents {
my $self = shift;
my %hash = @_;
my $file;
my $tmpl = {
file => { required => 1, store => \$file }
};
check( $tmpl, \%hash ) or return;
my $fh = OPEN_FILE->($file) or return;
my $contents = do { local $/; <$fh> };
return $contents;
}
=pod
=head2 $cb->_move( from => $file|$dir, to => $target );
Moves a file or directory to the target.
Returns true on success, false on failure.
=cut
sub _move {
my $self = shift;
my %hash = @_;
my $from; my $to;
my $tmpl = {
file => { required => 1, allow => [IS_FILE,IS_DIR],
store => \$from },
to => { required => 1, store => \$to }
};
check( $tmpl, \%hash ) or return;
if( File::Copy::move( $from, $to ) ) {
return 1;
} else {
error(loc("Failed to move '%1' to '%2': %3", $from, $to, $!));
return;
}
}
=pod
=head2 $cb->_copy( from => $file|$dir, to => $target );
Moves a file or directory to the target.
Returns true on success, false on failure.
=cut
sub _copy {
my $self = shift;
my %hash = @_;
my($from,$to);
my $tmpl = {
file =>{ required => 1, allow => [IS_FILE,IS_DIR],
store => \$from },
to => { required => 1, store => \$to }
};
check( $tmpl, \%hash ) or return;
if( File::Copy::copy( $from, $to ) ) {
return 1;
} else {
error(loc("Failed to copy '%1' to '%2': %3", $from, $to, $!));
return;
}
}
=head2 $cb->_mode_plus_w( file => '/path/to/file' );
Sets the +w bit for the file.
Returns true on success, false on failure.
=cut
sub _mode_plus_w {
my $self = shift;
my %hash = @_;
require File::stat;
my $file;
my $tmpl = {
file => { required => 1, allow => IS_FILE, store => \$file },
};
check( $tmpl, \%hash ) or return;
### set the mode to +w for a file and +wx for a dir
my $x = File::stat::stat( $file );
my $mask = -d $file ? 0100 : 0200;
if( $x and chmod( $x->mode|$mask, $file ) ) {
return 1;
} else {
error(loc("Failed to '%1' '%2': '%3'", 'chmod +w', $file, $!));
return;
}
}
=head2 $uri = $cb->_host_to_uri( scheme => SCHEME, host => HOST, path => PATH );
Turns a CPANPLUS::Config style C<host> entry into an URI string.
Returns the uri on success, and false on failure
=cut
sub _host_to_uri {
my $self = shift;
my %hash = @_;
my($scheme, $host, $path);
my $tmpl = {
scheme => { required => 1, store => \$scheme },
host => { default => 'localhost', store => \$host },
path => { default => '', store => \$path },
};
check( $tmpl, \%hash ) or return;
### it's an URI, so unixify the path.
### VMS has a special method for just that
$path = ON_VMS
? VMS::Filespec::unixify($path)
: File::Spec::Unix->catdir( File::Spec->splitdir( $path ) );
return "$scheme://" . File::Spec::Unix->catdir( $host, $path );
}
=head2 $cb->_vcmp( VERSION, VERSION );
Normalizes the versions passed and does a '<=>' on them, returning the result.
=cut
sub _vcmp {
my $self = shift;
my ($x, $y) = @_;
$x = $self->_version_to_number(version => $x);
$y = $self->_version_to_number(version => $y);
return $x <=> $y;
}
=head2 $cb->_home_dir
Returns the user's homedir, or C<cwd> if it could not be found
=cut
sub _home_dir {
if ( can_load( modules => { 'File::HomeDir' => 0.0 } ) ) {
if ( defined $ENV{APPDATA} && length $ENV{APPDATA} && !ON_WIN32 ) {
msg("'APPDATA' env var is set and not on MSWin32, " .
"please use 'PERL5_CPANPLUS_HOME' instead to change .cpanplus location", 1 );
}
return File::HomeDir->my_home if -d File::HomeDir->my_home;
}
my @os_home_envs = qw( APPDATA HOME USERPROFILE WINDIR SYS$LOGIN );
for my $env ( @os_home_envs ) {
next unless exists $ENV{ $env };
next unless defined $ENV{ $env } && length $ENV{ $env };
return $ENV{ $env } if -d $ENV{ $env };
}
return cwd();
}
=head2 $path = $cb->_safe_path( path => $path );
Returns a path that's safe to us on Win32 and VMS.
Only cleans up the path on Win32 if the path exists.
On VMS, it encodes dots to _ using C<VMS::Filespec::vmsify>
=cut
sub _safe_path {
my $self = shift;
my %hash = @_;
my $path;
my $tmpl = {
path => { required => 1, store => \$path },
};
check( $tmpl, \%hash ) or return;
if( ON_WIN32 ) {
### only need to fix it up if there's spaces in the path
return $path unless $path =~ /\s+/;
### clean up paths if we are on win32
return Win32::GetShortPathName( $path ) || $path;
} elsif ( ON_VMS ) {
### XXX According to John Malmberg, there's an VMS issue:
### catdir on VMS can not currently deal with directory components
### with dots in them.
### Fixing this is a a three step procedure, which will work for
### VMS in its traditional ODS-2 mode, and it will also work if
### VMS is in the ODS-5 mode that is being implemented.
### If the path is already in VMS syntax, assume that we are done.
### VMS format is a path with a trailing ']' or ':'
return $path if $path =~ /\:|\]$/;
### 1. Make sure that the value to be converted, $path is
### in UNIX directory syntax by appending a '/' to it.
$path .= '/' unless $path =~ m|/$|;
### 2. Use VMS::Filespec::vmsify($path . '/') to convert the dots to
### underscores if needed. The trailing '/' is needed as so that
### C<vmsify> knows that it should use directory translation instead of
### filename translation, as filename translation leaves one dot.
$path = VMS::Filespec::vmsify( $path );
### 3. Use $path = File::Spec->splitdir( VMS::Filespec::vmsify(
### $path . '/') to remove the directory delimiters.
### From John Malmberg:
### File::Spec->catdir will put the path back together.
### The '/' trick only works if the string is a directory name
### with UNIX style directory delimiters or no directory delimiters.
### It is to force vmsify to treat the input specification as UNIX.
###
### There is a VMS::Filespec::unixpath() to do the appending of the '/'
### to the specification, which will do a VMS::Filespec::vmsify()
### if needed.
### However it is not a good idea to call vmsify() on a pathname
### returned by unixify(), and it is not a good idea to call unixify()
### on a pathname returned by vmsify(). Because of the nature of the
### conversion, not all file specifications can make the round trip.
###
### I think that directory specifications can safely make the round
### trip, but not ones containing filenames.
$path = File::Spec->catdir( File::Spec->splitdir( $path ) )
}
return $path;
}
=head2 ($pkg, $version, $ext) = $cb->_split_package_string( package => PACKAGE_STRING );
Splits the name of a CPAN package string up into its package, version
and extension parts.
For example, C<Foo-Bar-1.2.tar.gz> would return the following parts:
Package: Foo-Bar
Version: 1.2
Extension: tar.gz
=cut
{ my $del_re = qr/[-_\+]/i; # delimiter between elements
my $pkg_re = qr/[a-z] # any letters followed by
[a-z\d]* # any letters, numbers
(?i:\.pm)? # followed by '.pm'--authors do this :(
(?: # optionally repeating:
$del_re # followed by a delimiter
[a-z] # any letters followed by
[a-z\d]* # any letters, numbers
(?i:\.pm)? # followed by '.pm'--authors do this :(
)*
/xi;
my $ver_re = qr/[a-z]*\d*?[a-z]* # contains a digit and possibly letters
(?: # however, some start with a . only :(
[-._] # followed by a delimiter
[a-z\d]+ # and more digits and or letters
)*?
/xi;
my $ext_re = qr/[a-z] # a letter, followed by
[a-z\d]* # letters and or digits, optionally
(?:
\. # followed by a dot and letters
[a-z\d]+ # and or digits (like .tar.bz2)
)? # optionally
/xi;
my $ver_ext_re = qr/
($ver_re+) # version, optional
(?:
\. # a literal .
($ext_re) # extension,
)? # optional, but requires version
/xi;
### composed regex for CPAN packages
my $full_re = qr/
^
( # the whole thing
($pkg_re+) # package
(?:
$del_re # delimiter
$ver_ext_re # version + extension
)?
)
$
/xi;
### composed regex for perl packages
my $perl = PERL_CORE;
my $perl_re = qr/
^
( # the whole thing
($perl) # package name for 'perl'
(?:
$ver_ext_re # version + extension
)?
)
$
/xi;
sub _split_package_string {
my $self = shift;
my %hash = @_;
my $str;
my $tmpl = { package => { required => 1, store => \$str } };
check( $tmpl, \%hash ) or return;
### 2 different regexes, one for the 'perl' package,
### one for ordinary CPAN packages.. try them both,
### first match wins.
for my $re ( $full_re, $perl_re ) {
### try the next if the match fails
$str =~ $re or next;
my $full = $1 || '';
my $pkg = $2 || '';
my $ver = $3 || '';
my $ext = $4 || '';
### this regex resets the capture markers!
### strip the trailing delimiter
$pkg =~ s/$del_re$//;
### strip the .pm package suffix some authors insist on adding
$pkg =~ s/\.pm$//i;
return ($pkg, $ver, $ext, $full );
}
return;
}
}
{ my %escapes = map {
chr($_) => sprintf("%%%02X", $_)
} 0 .. 255;
sub _uri_encode {
my $self = shift;
my %hash = @_;
my $str;
my $tmpl = {
uri => { store => \$str, required => 1 }
};
check( $tmpl, \%hash ) or return;
### XXX taken straight from URI::Encode
### Default unsafe characters. RFC 2732 ^(uric - reserved)
$str =~ s|([^A-Za-z0-9\-_.!~*'()])|$escapes{$1}|g;
return $str;
}
sub _uri_decode {
my $self = shift;
my %hash = @_;
my $str;
my $tmpl = {
uri => { store => \$str, required => 1 }
};
check( $tmpl, \%hash ) or return;
### XXX use unencode routine in utils?
$str =~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg;
return $str;
}
}
sub _update_timestamp {
my $self = shift;
my %hash = @_;
my $file;
my $tmpl = {
file => { required => 1, store => \$file, allow => FILE_EXISTS }
};
check( $tmpl, \%hash ) or return;
### `touch` the file, so windoze knows it's new -jmb
### works on *nix too, good fix -Kane
### make sure it is writable first, otherwise the `touch` will fail
my $now = time;
unless( chmod( 0644, $file) && utime ($now, $now, $file) ) {
error( loc("Couldn't touch %1", $file) );
return;
}
return 1;
}
1;
# Local variables:
# c-indentation-style: bsd
# c-basic-offset: 4
# indent-tabs-mode: nil
# End:
# vim: expandtab shiftwidth=4:
Mini Shell