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Warning: I'm rather new to PAR, so maybe I'm asking a FAQ (I don't think so).

How can a bundled module load some data files included with it in the .par file?

I'm developping a library for a client, let's call it Bam::Kapow. Some data files are needed, so I put them where I was sure I'd find them: in Bam/Kapow/, just below Bam/Kapow.pm.

Here are the few files (simplified as much as possible):

  • lib/Bam/Kapow.pm
    package Bam::Kapow; use strict; use Carp; use File::Basename; use File::Spec::Functions; our $VERSION = "0.01"; our %Info = (); # load the data file for my $data (qw( motd issue ) ) { my $file = catfile( dirname( $INC{'Bam/Kapow.pm'} ), 'Kapow', $dat +a ); open my $fh, $file or carp "Can't open $file: $!"; $Info{$data} = join '', <$fh>; close $fh; } 1;
  • lib/Bam/Kapow/motd
    Message of the day: PAR rules!
  • lib/Bam/Kapow/issue
    Well, I have this minor issue with PAR...
  • example script.pl
    #!/usr/bin/perl use Bam::Kapow; print "Using Bam::Kapow version $Bam::Kapow::VERSION\n"; print "MOTD: $Bam::Kapow::Info{motd}\n"; print "Got Bam::Kapow from $INC{'Bam/Kapow.pm'}\n";

Creating a self-extracting script with the needed library is rather easy, once you know how to pack those additionnal files:

$ find lib/Bam/Kapow/ -type f > bam_kapow.lst</tt> $ pp -o script.exe -A bam_kapow.lst -I lib script.pl $ PATH= ./script.exe Using Bam::Kapow version 0.01 MOTD: Message of the day: PAR rules! Got Bam::Kapow from /tmp/par-ufwk/cache-e73b24e48419250052360127de57a0 +74/inc/lib/Bam/Kapow.pm

Now, I would like to package this as a .par file, rather than as a self-extractible script. The test script would become:

#!/usr/bin/perl use PAR; use lib 'Bam-Kapow'; use Bam::Kapow; print "Using Bam::Kapow version $Bam::Kapow::VERSION\n"; print "MOTD: $Bam::Kapow::Info{motd}\n"; print "Got Bam::Kapow from $INC{'Bam/Kapow.pm'}\n";

First way to create the .par file and test:

$ zip -r Bam-Kapow.par lib adding: lib/ (stored 0%) adding: lib/Bam/ (stored 0%) adding: lib/Bam/Kapow/ (stored 0%) adding: lib/Bam/Kapow/motd (stored 0%) adding: lib/Bam/Kapow/issue (stored 0%) adding: lib/Bam/Kapow.pm (deflated 40%) $ perl script2.pl perl script2.pl Can't open /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb43c/Kapow/ +motd: No such file or directory at script2.pl line 4 Can't open /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb43c/Kapow/ +issue: No such file or directory at script2.pl line 4 Using Bam::Kapow version 0.01 MOTD: Got Bam::Kapow from /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb4 +3c/a23f3e6c.pm ls /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb43c/ a23f3e6c.pm

This does not seem to work (the files are not extracted). Let's try something else:

$ pp -o Bam-Kapow.par -p -M Bam::Kapow -A bam_kapow.lst -I lib -e 1 $ perl script2.pl Can't open /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb43c/Kapow/ +motd: No such file or directory at script2.pl line 4 Can't open /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb43c/Kapow/ +issue: No such file or directory at script2.pl line 4 Using Bam::Kapow version 0.01 MOTD: Got Bam::Kapow from /tmp/par-ufwk/cache-51eaa99df530ab0d3b760931a92bb4 +3c/40599894.pm

Same problem, no surprise here.

Is PAR::read_file() my only option? That means that the module needs to detect if it was loaded with PAR or not (I have a test suite to run, after all), which may lead to more complicated (and buggy) code.


In reply to Data files in a .par file by BooK

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