Ubuntu Manpage: PAR::Dist - Create and manipulate PAR distributions

Provided by: libpar-dist-perl_0.52-1_all

NAME

       PAR::Dist - Create and manipulate PAR distributions

SYNOPSIS

       As a shell command:

           % perl -MPAR::Dist -eblib_to_par

       In programs:

           use PAR::Dist;

           my $dist = blib_to_par(); # make a PAR file using ./blib/
           install_par($dist);       # install it into the system
           uninstall_par($dist);     # uninstall it from the system
           sign_par($dist);          # sign it using Module::Signature
           verify_par($dist);        # verify it using Module::Signature

           install_par("http://foo.com/DBI-1.37-MSWin32-5.8.0.par"); # works too
           install_par("http://foo.com/DBI-1.37"); # auto-appends archname + perlver
           install_par("cpan://SMUELLER/PAR-Packer-0.975"); # uses CPAN author directory

DESCRIPTION

       This module creates and manipulates PAR distributions.  They are architecture-specific PAR files,
       containing everything under blib/ of CPAN distributions after their "make" or "Build" stage, a META.yml
       describing metadata of the original CPAN distribution, and a MANIFEST detailing all files within it.
       Digitally signed PAR distributions will also contain a SIGNATURE file.

       The naming convention for such distributions is:

           $NAME-$VERSION-$ARCH-$PERL_VERSION.par

       For example, "PAR-Dist-0.01-i386-freebsd-5.8.0.par" corresponds to the 0.01 release of "PAR-Dist" on
       CPAN, built for perl 5.8.0 running on "i386-freebsd".

FUNCTIONS

Several functions are exported by default. Unless otherwise noted, they can take either a hash of named
arguments, a single argument (taken as $path by "blib_to_par" and $dist by other functions), or no
arguments (in which case the first PAR file in the current directory is used).

Therefore, under a directory containing only a single test.par, all invocations below are equivalent:

% perl -MPAR::Dist -e"install_par( dist => 'test.par' )"
% perl -MPAR::Dist -e"install_par( 'test.par' )"
% perl -MPAR::Dist -einstall_par;

If $dist resembles a URL, "LWP::Simple::mirror" is called to mirror it locally under $ENV{PAR_TEMP} (or
"$TEMP/par/" if unspecified), and the function will act on the fetched local file instead. If the URL
begins with "cpan://AUTHOR/", it will be expanded automatically to the author's CPAN directory (e.g.
"http://www.cpan.org/modules/by-authors/id/A/AU/AUTHOR/").

If $dist does not have a file extension beginning with a letter or underscore, a dash and $suffix
($ARCH-$PERL_VERSION.par by default) will be appended to it.

blib_to_par
Takes key/value pairs as parameters or a single parameter indicating the path that contains the blib/
subdirectory.

Builds a PAR distribution from the blib/ subdirectory under "path", or under the current directory if
unspecified. If blib/ does not exist, it automatically runs Build, make, Build.PL or Makefile.PL to
create it.

Returns the filename of the generated PAR distribution.

Valid parameters are:

path
Sets the path which contains the blib/ subdirectory from which the PAR distribution will be generated.

name, version, suffix
These attributes set the name, version and platform specific suffix of the distribution. Name and
version can be automatically determined from the distributions META.yml or Makefile.PL files.

The suffix is generated from your architecture name and your version of perl by default.

dist
The output filename for the PAR distribution.

quiet
Set to true to suppress as much output as possible.

install_par
Installs a PAR distribution into the system, using "ExtUtils::Install::install_default".

If only a single parameter is given, it is treated as the value for the "dist" parameter.

Valid named parameters are:

dist
The .par file to install. The heuristics outlined in the FUNCTIONS section above apply.

prefix
This string will be prepended to all installation paths. If it isn't specified, the environment
variable "PERL_INSTALL_ROOT" is used as a prefix.

uninstall_shadows
This corresponds to the "uninstall_shadows" option of ExtUtils::Install. Quoting its manual: If
"uninstall_shadows" is set to true, any differing versions throughout @INC will be uninstalled. This is
"make install UNINST=1".

verbose
This corresponds to the "verbose" option of ExtUtils::Install. According to its manual: If "verbose" is
true, will print out each file removed. This is "make install VERBINST=1". "verbose" values going up
to 5 show increasingly more diagnostics output.

Default verbosity for PAR::Dist is 1.

If you're just going to install into the running perl like everything else, you can stop reading the rest
of this section now.

Additionally, you can use several parameters to change the default installation destinations. You don't
usually have to worry about this unless you are installing into a user-local directory. The following
section outlines the parameter names and default settings:

Parameter From To
inst_lib blib/lib $Config{installsitelib} (*)
inst_archlib blib/arch $Config{installsitearch}
inst_script blib/script $Config{installscript}
inst_bin blib/bin $Config{installbin}
inst_man1dir blib/man1 $Config{installman1dir}
inst_man3dir blib/man3 $Config{installman3dir}
packlist_read $Config{sitearchexp}/auto/$name/.packlist
packlist_write $Config{installsitearch}/auto/$name/.packlist

The "packlist_write" parameter is used to control where the .packlist file is written to. (Necessary for
uninstallation.) The "packlist_read" parameter specifies a .packlist file to merge in if it exists. By
setting any of the above installation targets to "undef", you can remove that target altogether. For
example, passing "inst_man1dir => undef, inst_man3dir => undef" means that the contained manual pages
won't be installed. This is not available for the packlists.

Again, the defaults will be the normal site paths from %Config.

(*) If the ".par"'s inst_archlib section (normally "blib/arch") isn't empty, the code in inst_lib
(normally "blib/lib") is also installed into the inst_archlib path. This makes sense for XS modules. If,
however, you override "inst_lib", this automatic conversion is also overridden! You can use the named
parameter "auto_inst_lib_conversion => 1" to re-enable the conversion for custom inst_lib's.

Finally, you may specify a "custom_targets" parameter. Its value should be a reference to a hash of
custom installation targets such as

custom_targets => { 'blib/my_data' => '/some/path/my_data' }

You can use this to install the .par archives contents to arbitrary locations.

uninstall_par
Uninstalls all previously installed contents of a PAR distribution, using "ExtUtils::Install::uninstall".

Takes almost the same parameters as "install_par", but naturally, the installation target parameters do
not apply. The only exception to this is the "packlist_read" parameter which specifies the .packlist file
to read the list of installed files from. It defaults to
"$Config::Config{installsitearch}/auto/$name/.packlist".

Additionally, the "uninstall_shadows" parameter of "install_par" isn't available.

sign_par
Digitally sign a PAR distribution using "gpg" or Crypt::OpenPGP, via Module::Signature.

verify_par
Verify the digital signature of a PAR distribution using "gpg" or Crypt::OpenPGP, via Module::Signature.

Returns a boolean value indicating whether verification passed; $! is set to the return code of
"Module::Signature::verify".

merge_par
Note: Since version 0.32 of PAR::Dist, this function requires a YAML reader. The order of precedence is:

YAML:XS YAML YAML::Syck YAML::Tiny

Merges two or more PAR distributions into one. First argument must be the name of the distribution you
want to merge all others into. Any following arguments will be interpreted as the file names of further
PAR distributions to merge into the first one.

merge_par('foo.par', 'bar.par', 'baz.par')

This will merge the distributions "foo.par", "bar.par" and "baz.par" into the distribution "foo.par".
"foo.par" will be overwritten!

The original META.yml of "foo.par" is retained, but augmented with any "provides", "requires",
"recommends", "build_requires", and "configure_requires" sections from the other ".par" files.

remove_man
Remove the man pages from a PAR distribution. Takes one named parameter: dist which should be the name
(and path) of the PAR distribution file. The calling conventions outlined in the "FUNCTIONS" section
above apply.

The PAR archive will be extracted, stripped of all "man\d?" and "html" subdirectories and then repackaged
into the original file.

get_meta
Opens a PAR archive and extracts the contained META.yml file. Returns the META.yml file as a string.

Takes one named parameter: dist. If only one parameter is passed, it is treated as the dist parameter.
(Have a look at the description in the "FUNCTIONS" section above.)

Returns undef if no PAR archive or no META.yml within the archive were found.

parse_dist_name
First argument must be a distribution file name. The file name is parsed into distribution name,
distribution version, architecture name, and perl version.

Returns the results as a list in the above order. If any or all of the above cannot be determined,
returns undef instead of the undetermined elements.

Supported formats are:

Math-Symbolic-0.502-x86_64-linux-gnu-thread-multi-5.8.7

Math-Symbolic-0.502

The ".tar.gz" or ".par" extensions as well as any preceding paths are stripped before parsing. Starting
with "PAR::Dist" 0.22, versions containing a preceding "v" are parsed correctly.

This function is not exported by default.

generate_blib_stub
Creates a blib/lib subdirectory in the current directory and prepares a META.yml with meta information
for a new PAR distribution. First argument should be the name of the PAR distribution in a format
understood by "parse_dist_name()". Alternatively, named arguments resembling those of "blib_to_par" are
accepted.

After running "generate_blib_stub" and injecting files into the blib directory, you can create a PAR
distribution using "blib_to_par". This function is useful for creating custom PAR distributions from
scratch. (I.e. not from an unpacked CPAN distribution) Example:

use PAR::Dist;
use File::Copy 'copy';

generate_blib_stub(
name => 'MyApp', version => '1.00'
);
copy('MyApp.pm', 'blib/lib/MyApp.pm');
blib_to_par(); # generates the .par file!

"generate_blib_stub" will not overwrite existing files.

contains_binaries
This function is not exported by default.

Opens a PAR archive tries to determine whether that archive contains platform-specific binary code.

Takes one named parameter: dist. If only one parameter is passed, it is treated as the dist parameter.
(Have a look at the description in the "FUNCTIONS" section above.)

Throws a fatal error if the PAR archive could not be found.

Returns one if the PAR was found to contain binary code and zero otherwise.

AUTHORS

       Audrey Tang <cpan@audreyt.org> 2003-2007

       Steffen Mueller <smueller@cpan.org> 2005-2011

       PAR   has   a   mailing   list,   <par@perl.org>,   that  you  can  write  to;  send  an  empty  mail  to
       <par-subscribe@perl.org> to join the list and participate in the discussion.

       Please send bug reports to <bug-par@rt.cpan.org>.

COPYRIGHT