# Copyright 2001-2011, Paul Johnson (pjcj@cpan.org)

# This software is free.  It is licensed under the same terms as Perl itself.

# The latest version of this software should be available from my homepage:
# http://www.pjcj.net

package Devel::Cover::Report::Text;

use strict;
use warnings;

our $VERSION = "0.78";

use Devel::Cover::DB 0.78;

sub print_runs
{
    my ($db, $options) = @_;
    for my $r (sort {$a->{start} <=> $b->{start}} $db->runs)
    {
        print "Run:          ", $r->run,  "\n";
        print "Perl version: ", $r->perl, "\n";
        print "OS:           ", $r->OS,   "\n";
        print "Start:        ", scalar gmtime $r->start  / 1e6, "\n";
        print "Finish:       ", scalar gmtime $r->finish / 1e6, "\n";
        print "\n";
        # use Data::Dumper; print Dumper $r;
    }
}

sub print_statement
{
    my ($db, $file, $options) = @_;

    my $cover = $db->cover;

    print "$file\n\n";
    my $f = $cover->file($file);

    my $fmt = "%-5s %3s ";
    my @args = ("line", "err");
    for my $ann (@{$options->{annotations}})
    {
        for my $a (0 .. $ann->count - 1)
        {
            $fmt .= "%-" . $ann->width($a) . "s ";
            push @args, $ann->header($a);
        }
    }
    my %cr; @cr{$db->criteria} = $db->criteria_short;
    for my $c ($db->criteria)
    {
        if ($options->{show}{$c})
        {
            $fmt .= "%6s ";
            push @args, $cr{$c};
        }
    }

    $fmt .= "  %s\n";
    push @args, "code";

    printf $fmt, @args;

    open F, $file or warn("Unable to open $file: $!\n"), return;

    LINE: while (defined(my $l = <F>))
    {
        chomp $l;
        my $n = $.;

        my %criteria;
        for my $c ($db->criteria)
        {
            next unless $options->{show}{$c};
            my $criterion = $f->$c();
            if ($criterion)
            {
                my $l = $criterion->location($n);
                $criteria{$c} = $l ? [@$l] : $l;
            }
        }

        my $more = 1;
        while ($more)
        {
            my @args  = ($n, "");
            my $error = 0;

            for my $ann (@{$options->{annotations}})
            {
                for my $a (0 .. $ann->count - 1)
                {
                    push @args,
                         substr $ann->text($file, $n, $a), 0, $ann->width($a);
                    $error ||= $ann->error($file, $n, $a);
                }
            }

            $more = 0;
            for my $c ($db->criteria)
            {
                next unless $options->{show}{$c};
                my $o = shift @{$criteria{$c}};
                $more ||= @{$criteria{$c}};
                my $value = $o
                    ? ($c =~ /statement|sub|pod|time/)
                        ? $o->covered
                        : $o->percentage
                    : "";
                $value = "-" . $value if $o && $o->uncoverable;
                push @args, $value;
                $error ||= $o->error if $o;
            }

            $args[1] = "***" if $error;
            push @args, $l;

            # print join(", ", map { "[$_]" } @args), "\n";
            printf $fmt, @args;

            last LINE if $l =~ /^__(END|DATA)__/;
            $n = $l = "";
        }
    }

    close F or die "Unable to close $file: $!";
    print "\n\n";
}

sub print_branches
{
    my ($db, $file, $options) = @_;

    my $branches = $db->cover->file($file)->branch;

    return unless $branches;

    print "Branches\n";
    print "--------\n\n";

    my $tpl = "%-5s %3s %6s %6s %6s   %s\n";
    printf $tpl, "line", "err", "%", "true", "false", "branch";
    printf $tpl, "-----", "---", ("------") x 3, "------";

    for my $location (sort { $a <=> $b } $branches->items)
    {
        my $n = 0;
        for my $b (@{$branches->location($location)})
        {
            printf $tpl,
                   $n ? "" : $location, $b->error ? "***" : "",
                   ($b->uncoverable ? "-" : "") . $b->percentage,
                   map (($b->uncoverable($_) ? "-" : "") .
                        ($b->covered($_) || 0), 0 .. $b->total - 1),
                   $b->text;
            $n++;
        }
    }

    print "\n\n";
}

sub print_conditions
{
    my ($db, $file, $options) = @_;

    my $conditions = $db->cover->file($file)->condition;

    return unless $conditions;

    my $template = sub { "%-5s %3s %6s " . ( "%6s " x shift ) . "  %s\n" };

    my %r;
    for my $location (sort { $a <=> $b } $conditions->items)
    {
        my %seen;
        for my $c (@{$conditions->location($location)})
        {
            push @{$r{$c->type}}, [ $c, $seen{$c->type}++ ? "" : $location ];
        }
    }

    print "Conditions\n";
    print "----------\n\n";

    my %seen;
    for my $type (sort keys %r)
    {
        my $tpl;
        for (@{$r{$type}})
        {
            my ($c, $location) = @$_;
            unless ($seen{$type}++)
            {
                my $headers = $c->headers;
                my $nh = @$headers;
                $tpl = $template->($nh);
                (my $t = $type) =~ s/_/ /g;
                print "$t conditions\n\n";
                printf $tpl, "line",  "err", "%",         @$headers, "expr";
                printf $tpl, "-----", "---", ("------") x ($nh + 1), "----";
            }
            printf $tpl, $location, $c->error ? "***" : "",
                   ($c->uncoverable ? "-" : "") . $c->percentage,
                   map (($c->uncoverable($_) ? "-" : "") .
                        ($c->covered($_) || 0), 0 .. $c->total - 1),
                   $c->text;
        }
        print "\n";
    }

    print "\n";
}

sub print_subroutines
{
    my ($db, $file, $options) = @_;

    my $dfil = $db->cover->file($file);
    my $subs = $dfil->subroutine or return;
    my $pods = $options->{show}{pod} && $dfil->pod;
    my $maxh = 8;
    my $maxc = 5;
    my $maxp = 3;
    my $maxs = 10;
    my %subs;

    for my $location ($subs->items)
    {
        my $l = $subs->location($location);
        my $d = $pods && $pods->location($location);
        for my $sub (@$l)
        {
            my $h = "$file:$location";
            my $c = ($sub->uncoverable ? "-" : "") . $sub->covered;
            my $e = $pods && shift @$d;
            my $p = $e ? ($e->uncoverable ? "-" : "") . $e->covered : "";
            my $s = $sub->name;
            $maxh = length $h if       length $h > $maxh;
            $maxc = length $c if       length $c > $maxc;
            $maxp = length $p if $p && length $p > $maxp;
            $maxs = length $s if       length $s > $maxs;
            push @{$subs{$sub->covered ? "covered" : "uncovered"}{$s}},
                 [$c, $pods ? $p : (), $h];
        }
    }

    my $template = "%-${maxs}s %${maxc}s ";
    $template .= "%${maxp}s " if $pods;
    $template .= "%-${maxh}s\n";

    for my $type (sort keys %subs)
    {
        print ucfirst $type, " Subroutines\n";
        print "-" x (12 + length $type), "\n\n";
        printf $template, "Subroutine", "Count", $pods ? "Pod" : (), "Location";
        printf $template, "-" x $maxs, "-" x $maxc, $pods ? "-" x $maxp : (),
                          "-" x $maxh;

        for my $s (sort keys %{$subs{$type}})
        {
            printf $template, $s, @$_
                for sort {$a->[-1] cmp $b->[-1]} @{$subs{$type}{$s}};
        }
        print "\n";
    }

    print "\n";
}

sub report
{
    my ($pkg, $db, $options) = @_;

    print_runs($db, $options);
    for my $file (@{$options->{file}})
    {
        print_statement  ($db, $file, $options) if $options->{show}{statement};
        print_branches   ($db, $file, $options) if $options->{show}{branch};
        print_conditions ($db, $file, $options) if $options->{show}{condition};
        print_subroutines($db, $file, $options)
            if $options->{show}{subroutine} || $options->{show}{pod};
    }
}

1

__END__

=head1 NAME

Devel::Cover::Report::Text - Backend for textual reporting of coverage
statistics

=head1 SYNOPSIS

 cover -report text

=head1 DESCRIPTION

This module provides a textual reporting mechanism for coverage data.
It is designed to be called from the C<cover> program.

=head1 SEE ALSO

 Devel::Cover

=head1 BUGS

Huh?

=head1 VERSION

Version 0.78 - 17th May 2011

=head1 LICENCE

Copyright 2001-2011, Paul Johnson (pjcj@cpan.org)

This software is free.  It is licensed under the same terms as Perl itself.

The latest version of this software should be available from my homepage:
http://www.pjcj.net

=cut
