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Diffstat (limited to 'lib/CPANPLUS/Internals/Utils.pm')
| -rw-r--r-- | lib/CPANPLUS/Internals/Utils.pm | 536 |
1 files changed, 536 insertions, 0 deletions
diff --git a/lib/CPANPLUS/Internals/Utils.pm b/lib/CPANPLUS/Internals/Utils.pm new file mode 100644 index 0000000000..625160831b --- /dev/null +++ b/lib/CPANPLUS/Internals/Utils.pm @@ -0,0 +1,536 @@ +package CPANPLUS::Internals::Utils; + +use strict; + +use CPANPLUS::Error; +use CPANPLUS::Internals::Constants; + +use Cwd; +use File::Copy; +use Params::Check qw[check]; +use Module::Load::Conditional qw[can_load]; +use Locale::Maketext::Simple Class => 'CPANPLUS', Style => 'gettext'; + +local $Params::Check::VERBOSE = 1; + +=pod + +=head1 NAME + +CPANPLUS::Internals::Utils + +=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; + + return $version if $version =~ /^\.?\d/; + 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 $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 $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 => '', store => \$host }, + path => { default => '', store => \$path }, + }; + + check( $tmpl, \%hash ) or return; + + $host ||= 'localhost'; + + return "$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) = @_; + + s/_//g foreach $x, $y; + + return $x <=> $y; +} + +=head2 $cb->_home_dir + +Returns the user's homedir, or C<cwd> if it could not be found + +=cut + +sub _home_dir { + my @os_home_envs = qw( APPDATA HOME USERPROFILE WINDIR SYS$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. Only cleans up +the path on Win32 if the path exists. + +=cut + +sub _safe_path { + my $self = shift; + + my %hash = @_; + + my $path; + my $tmpl = { + path => { required => 1, store => \$path }, + }; + + check( $tmpl, \%hash ) or return; + + ### only need to fix it up if there's spaces in the path + return $path unless $path =~ /\s+/; + + ### or if we are on win32 + return $path if $^O ne 'MSWin32'; + + ### clean up paths if we are on win32 + return Win32::GetShortPathName( $path ) || $path; + +} + + +=head2 ($pkg, $version, $ext) = $cb->_split_package_string( package => PACKAGE_STRING ); + +Splits the name of a CPAN package string up in it's 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 + (?: + [-._] # 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 $full_re = qr/ + ^ + ($pkg_re+) # package + (?: + $del_re # delimiter + $ver_ext_re # version + extension + )? + $ + /xi; + + ### composed regex for perl packages + my $perl = PERL_CORE; + my $perl_re = qr/ + ^ + ($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 $pkg = $1 || ''; + my $ver = $2 || ''; + my $ext = $3 || ''; + + ### 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 ); + } + + return; + } +} + +1; + +# Local variables: +# c-indentation-style: bsd +# c-basic-offset: 4 +# indent-tabs-mode: nil +# End: +# vim: expandtab shiftwidth=4: |