open pull request

hoge.pl

#!perl

use strict;
use warnings;

# ref: http://techlife.cookpad.com/entry/2015/11/17/151426  

my $commit_hash = $ARGV[0];
unless ($commit_hash) {
    print "usage: open_pull_request <commit_hash>\n";
    exit;
}

my @merge_commits_1 = split "\n", `git rev-list --ancestry-path $commit_hash..master`;
my @merge_commits_2 = split "\n", `git rev-list --first-parent $commit_hash..master`;

my $target_commit;
my %cnt = ();
for (@merge_commits_1, @merge_commits_2) {
    $target_commit = $_ if ++$cnt{$_} == 2;
}

if (!$target_commit || !`git show $target_commit | grep 'pull request'`) {
    print "no pull request found\n";
    exit;
}

`git log -1 --format=%B $target_commit | head -1` =~ /^.*#([0-9]*).*$/;
my $url = "https://github.com/<account>/<repo>/pull/$1";
print "$url\n";
`open $url`;

hoge.rb

#!ruby

# ref: http://techlife.cookpad.com/entry/2015/11/17/151426

unless ARGV[0]
  puts "usage: open_pull_request <commit hash>"
  exit
end 

merge_commits_1 = `git rev-list --ancestry-path #{ARGV[0]}..master`.split("\n")
merge_commits_2 = `git rev-list --first-parent #{ARGV[0]}..master`.split("\n")

merge_commit = (merge_commits_1 & merge_commits_2).last
unless merge_commit
  puts "no pull request found"
  exit
end

pull_request = `git show #{merge_commit} | grep 'pull request'`

unless pull_request
  puts "no pull request found"
  exit
end

`git log -1 --format=%B #{merge_commit}` =~ /^.*#([0-9]*).*$/
pull_request_number = $1
url = "https://github.com/<account>/<repo>/pull/#{pull_request_number}"
puts url
`open #{url}`

hoge.sh

#!/bin/sh

# http://techlife.cookpad.com/entry/2015/11/17/151426
merge_commit=$(ruby -e 'print (File.readlines(ARGV[0]) & File.readlines(ARGV[1])).last' <(git rev-list --ancestry-path $1..master) <(git rev-list --first-parent $1..master))
if git show $merge_commit | grep -q 'pull request'
then
    pull_request_number=$(git log -1 --format=%B $merge_commit | sed -e 's/^.*#\([0-9]*\).*$/\1/' | head -1)
    url="https://github.com/<account>/<repo>/pull/${pull_request_number}"
fi
echo $url
open $url