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PAR::Dist(3)                         User Contributed Perl Documentation                        PAR::Dist(3)



NAME
       PAR::Dist - Create and manipulate PAR distributions

VERSION
       This document describes version 0.47 of PAR::Dist, released November 29, 2009.

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

       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.

SEE ALSO
       PAR, ExtUtils::Install, Module::Signature, LWP::Simple

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

       Steffen Mueller <smueller@cpan.org> 2005-2009

       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
       Copyright 2003-2009 by Audrey Tang <autrijus@autrijus.org>.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.

       See <http://www.perl.com/perl/misc/Artistic.html>



perl v5.12.5                                     2009-11-29                                     PAR::Dist(3)