Re: pp (PAR-Packer) - how to access included data files

[swl]

The post linked to by marto has a good example of checking if running under PAR and then accessing the file accordingly.

More details about the environment variables used by PAR can be seen at https://metacpan.org/dist/PAR/view/lib/PAR/Environment.pod.

[ibm1620]

I wasn't really clear about the use of PAR_TEMP, given the advice not to use it in https://metacpan.org/dist/PAR/view/lib/PAR/Environment.pod .

I finally figured out that "/", which the doc says is the root under which included files are stored, could be computed at runtime by dirname($ENV{PAR_0}) . "/inc".

[bliako]

dirname($ENV{PAR_0}) . "/inc".

Why you want to go low level when you have this? :

# PAR::read_file() returns a file inside any loaded PARs
my $conf = PAR::read_file('data/MyConfig.yaml');

(from SYNOPSIS)

[ibm1620]

Link to PAR#SYNOPSIS doesn't work :-) Maybe PAR#SYNOPSIS?

At any rate, this is the best place to begin learning about pp, rather than https://metacpan.org/pod/pp.

[ibm1620]

I must have overlooked read_file(). Thanks.

In my case, the easiest approach was to doctor the @ARGV before processing it, as follows:

if (exists $ENV{PAR_TEMP}){
    # running via PAR/pp
    push @ARGV, "$ENV{PAR_TEMP}/inc/lex.dict";
}

[swl]

The docs could be a bit clearer but my reading is that PAR_TEMP should not be assigned to but is fine to read from.

Your approach will still work, though.