File Coverage

lib/Sys/Path.pm

Criterion	Covered	Total	%
statement	70	86	81.4
branch	13	18	72.2
condition	5	11	45.4
subroutine	16	17	94.1
pod	4	4	100.0
total	108	136	79.4

package Sys::Path;

use warnings;
use strict;

our $VERSION = '0.16';

use File::Spec;
use Text::Diff 'diff';
use JSON::Util;
use Digest::MD5 qw(md5_hex);
use List::MoreUtils 'any', 'none';
use Carp 'croak', 'confess';
use Cwd 'cwd';

use base 'Sys::Path::SPc';

sub find_distribution_root {
    my $self        = shift;
    my $module_name = shift;

    croak 'pass module_name as argument'
        if not $module_name;

    my $module_filename = $module_name.'.pm';
    $module_filename =~ s{::}{/}g;
    eval 'use '.$module_name
        unless $INC{$module_filename};

    my @path;
    if ($INC{$module_filename}) {
        $module_filename = File::Spec->rel2abs($INC{$module_filename});

        @path = File::Spec->splitdir($module_filename);
        my @package_names = split('::',$module_name);
        @path = splice(@path,0,-1-@package_names);
    }
    else {
        @path = File::Spec->splitdir(cwd);
    }

    while (
        (not -f File::Spec->catdir(@path, 'MANIFEST'))
        and (not -f File::Spec->catdir(@path, 'Build.PL'))
        and (not -f File::Spec->catdir(@path, 'Makefile.PL'))
    ) {
        pop @path;
        confess 'failed to find distribution root'
            if not @path;
    }
    return File::Spec->catdir(@path);
}

sub prompt_cfg_file_changed {
    my $self     = shift;
    my $src_file = shift;
    my $dst_file = shift;
    my $prompt_function = shift;

    my $answer = '';
    while (none { $answer eq $_ } qw(Y I N O) ) {
        print qq{
Installing new version of config file $dst_file ...

Configuration file `$dst_file'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : background this process to examine the situation
 The default action is to keep your current version.
};

        $answer = uc $prompt_function->('*** '.$dst_file.' (Y/I/N/O/D/Z) ?', 'N');
        if ($answer eq 'D') {
            print "\n\n";
            print diff($src_file, $dst_file, { STYLE => 'Unified' });
            print "\n";
        }
        elsif ($answer eq 'Z') {
            print "Type `exit' when you're done.\n";
            system('bash');
        }
    }

    return 1 if any { $answer eq $_ } qw(Y I);
    return 0;
}

sub changed_since_install {
    my $self      = shift;
    my $dest_file = shift;
    my $file      = shift || $dest_file;

    my %files_checksums = $self->install_checksums;
    my $checksum = md5_hex(IO::Any->slurp([$file]));
    $files_checksums{$dest_file} ||= '';
    return $files_checksums{$dest_file} ne $checksum;
}

sub install_checksums {
    my $self = shift;
    my @args = @_;
    my $checksums_filename = File::Spec->catfile(
        Sys::Path::SPc->sharedstatedir,
        'syspath',
        'install-checksums.json'
    );

    if (@args) {
        print 'Updating ', $checksums_filename, "\n";
        my %conffiles_md5 = (
            $self->install_checksums,
            @args,
        );
        JSON::Util->encode(\%conffiles_md5, [ $checksums_filename ]);
        return %conffiles_md5;
    }

    # create empty json file if non available
    JSON::Util->encode({}, [ $checksums_filename ])
        if not -f $checksums_filename;

    return %{JSON::Util->decode([ $checksums_filename ])};
}


1;


__END__