A simple script that I use to pipe BitBucket push message into it and auto-open a browser page for the PR.

bbpr.js

#!/usr/bin/env node

var exec = require('child_process').exec

// accept input from pipe in
var data = ''
var IN = process.stdin

IN.resume()
IN.setEncoding('utf8')

IN.on('data', function(chunk) {
    data += chunk;
});

IN.on('end', function() {
    parseDataIntoURL(data);
});

setTimeout(function() {
    if (data === '') {
        IN.pause();
        parseDataIntoURL(data);
    }
}, 100) // 100 milisecond timeout to read stdin

function parseDataIntoURL(data) {
    // first, join all lines
    var dataOneLine = data.replace('\n', ' ');

    // regex match for the url
    var pullRequestUrlMatches = dataOneLine.match(/https:\/\/bitbucket\.org\/.*\/pull-requests\/new.*&t=1/);
    if (pullRequestUrlMatches) {
        var pullRequestUrl = pullRequestUrlMatches[0];

        console.log('Opening BitBucket PR link in your browser...\nThe link is also copied into your clipboard. :)\nLink: ' + pullRequestUrl);

        exec('open "' + pullRequestUrl + '"');
        exec('echo "' + pullRequestUrl + '" | pbcopy');
    } else {
        console.log('This push apparently didn\'t contain any new commits. No link given by bitbucket.\nStill attempting to open this branch...\n');

        // assume remote branch name is also origin branch name
        exec('git rev-parse --abbrev-ref HEAD', function(err, stdout) {
            var branchName = stdout.trim();

            exec('git config --get remote.origin.url', function(err, stdout) {
                var repoNameMatch = stdout.match(/bitbucket.org:.*\/(.*)\.git/)

                if (repoNameMatch) {
                    var repoName = repoNameMatch[1];
                    var pullRequestUrl = 'https://bitbucket.org/spensatech/' + repoName + '/pull-requests/new?source=' + branchName + '&t=1';

                    exec('open "' + pullRequestUrl + '"');
                    exec('echo "' + pullRequestUrl + '" | pbcopy');

                    console.log('Opening BitBucket PR link in your browser...\nThe link is also copied into your clipboard. :)\nLink: ' + pullRequestUrl);
                } else {
                    console.log('Could not find repo name or branch name. Failing out.')
                }
            })
        });
    }

}

install_bbpr.sh

#!/bin/sh

echo 'Installing bb-parser (bbpr) into /usr/local/bin as bbpr.'
echo "If you've got another thing called bbpr installed, you'll want to stop this installer here."

sleep .5

echo 'Downloading source...'

sleep .5

curl "https://gist.githubusercontent.com/thesephist/e89bbfd80bb8f84bf86640a5d94f3265/raw/aeb74b46e577aa5f4b78d1de24fae6cb3ef23c85/bbpr.js" > /usr/local/bin/bbpr

echo 'Setting execute permisson...'
chmod u+rwx /usr/local/bin/bbpr

echo "Installation done! Try $ bbpr in your repo"