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#!/usr/bin/perl -wT
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
use strict;
use lib qw(. lib);
use Bugzilla;
use Bugzilla::Error;
use Bugzilla::Bug;
use List::Util qw(max);
my $user = Bugzilla->login();
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars = {};
# Connect to the shadow database if this installation is using one to improve
# performance.
my $dbh = Bugzilla->switch_to_shadow_db();
################################################################################
# Data/Security Validation #
################################################################################
# Make sure the bug ID is a positive integer representing an existing
# bug that the user is authorized to access.
my $bug = Bugzilla::Bug->check(scalar $cgi->param('id'));
my $id = $bug->id;
local our $hide_resolved = $cgi->param('hide_resolved') ? 1 : 0;
local our $maxdepth = $cgi->param('maxdepth') || 0;
if ($maxdepth !~ /^\d+$/) { $maxdepth = 0 };
################################################################################
# Main Section #
################################################################################
# Stores the greatest depth to which either tree goes.
local our $realdepth = 0;
# Generate the tree of bugs that this bug depends on and a list of IDs
# appearing in the tree.
my $dependson_tree = { $id => $bug };
my $dependson_ids = {};
GenerateTree($id, "dependson", 1, $dependson_tree, $dependson_ids);
$vars->{'dependson_tree'} = $dependson_tree;
$vars->{'dependson_ids'} = [keys(%$dependson_ids)];
# Generate the tree of bugs that this bug blocks and a list of IDs
# appearing in the tree.
my $blocked_tree = { $id => $bug };
my $blocked_ids = {};
GenerateTree($id, "blocked", 1, $blocked_tree, $blocked_ids);
$vars->{'blocked_tree'} = $blocked_tree;
$vars->{'blocked_ids'} = [keys(%$blocked_ids)];
$vars->{'realdepth'} = $realdepth;
$vars->{'bugid'} = $id;
$vars->{'maxdepth'} = $maxdepth;
$vars->{'hide_resolved'} = $hide_resolved;
print $cgi->header();
$template->process("bug/dependency-tree.html.tmpl", $vars)
|| ThrowTemplateError($template->error());
################################################################################
# Recursive Tree Generation Function #
################################################################################
sub GenerateTree {
# Generates a dependency tree for a given bug. Calls itself recursively
# to generate sub-trees for the bug's dependencies.
my ($bug_id, $relationship, $depth, $bugs, $ids) = @_;
my @dependencies;
if ($relationship eq 'dependson') {
@dependencies = @{$bugs->{$bug_id}->dependson};
}
else {
@dependencies = @{$bugs->{$bug_id}->blocked};
}
# Don't do anything if this bug doesn't have any dependencies.
return unless scalar(@dependencies);
# Record this depth in the global $realdepth variable if it's farther
# than we've gone before.
$realdepth = max($realdepth, $depth);
foreach my $dep_id (@dependencies) {
# Get this dependency's record from the database and generate
# its sub-tree if we haven't already done so (which happens
# when bugs appear in dependency trees multiple times).
if (!$bugs->{$dep_id}) {
$bugs->{$dep_id} = new Bugzilla::Bug($dep_id);
GenerateTree($dep_id, $relationship, $depth+1, $bugs, $ids);
}
# Add this dependency to the list of this bug's dependencies
# if it exists, if we haven't exceeded the maximum depth the user
# wants the tree to go, and if the dependency isn't resolved
# (if we're ignoring resolved dependencies).
if (!$bugs->{$dep_id}->{'error'}
&& Bugzilla->user->can_see_bug($dep_id)
&& (!$maxdepth || $depth <= $maxdepth)
&& ($bugs->{$dep_id}->isopened || !$hide_resolved))
{
# Due to AUTOLOAD in Bug.pm, we cannot add 'dependencies'
# as a bug object attribute from here.
push(@{$bugs->{'dependencies'}->{$bug_id}}, $dep_id);
$ids->{$dep_id} = 1;
}
}
}
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