refactor binary: make use of lib to remove redundancies

bin/git-contributors

@@ -12,166 +12,29 @@
 
 var fs    = require('fs'),
     path  = require('path'),
-    git   = require('../lib/gitlog'),
-    _     = require('lodash');
-var Q     = require('q');
+    _     = require('lodash'),
+    cli   = require('../lib/_cli');
 
-var verifyRepositoryExists = function() {
-  'use strict';
-
-  var deferred = Q.defer();
-  var repo     = path.join(program.cwd, '.git');
-  var ok       = fs.existsSync(program.cwd) && fs.existsSync(repo);
-
-  if (ok) { deferred.resolve(program); }
-  else {
-    deferred.reject(
-      new Error('Could not find .git repository at "'+ program.cwd +'"')
-    );
-  }
-
-  return deferred.promise;
-};
-
-var processLog = function(stdout) {
-  'use strict';
-
-  var deferred = Q.defer();
-
-  var list,
-      entries = _.compact(stdout.split('\n')),
-      total   = _.size(entries);
-
-  list = _.map(_.uniq(entries), function(committer) {
-
-    var parts   = committer.split(' '),
-        email   = _.last(parts),
-        author  = _.without(parts, email).join(' '),
-        commits = _.size(_.filter(entries, function(e) {
-          return e.indexOf(author) > -1 && e.indexOf(email) > -1;
-        })),
-        percentage = (commits / total * 100);
-
-    return {
-      commits: commits,
-      name:    author,
-      email:   email,
-      percent: parseFloat(Math.max(0.1, percentage).toFixed(1), 10)
-    };
-  });
-
-  list = _.sortBy(list, function(committer) {
-    return -committer.commits;
-  });
-
-  deferred.resolve(list);
-
-  return deferred.promise;
-};
-
-var format = function(data) {
-  'use strict';
-
-  var deferred = Q.defer();
-
-  if (program.markdown === true) {
-    data = require('../lib/markdown-reporter').format(data, program);
-  }
-
-  if (program.json === true) {
-    data = JSON.stringify(data);
-  }
-  deferred.resolve(data);
+var pkg     = path.resolve(__dirname  + '/../package.json');
 
-  return deferred.promise;
-};
+var version = JSON.parse(fs.readFileSync(pkg, 'utf-8')).version;
 
-var filter = function(data) {
-  'use strict';
-
-  var deferred = Q.defer();
-
-  var stripEmail = function(el) {
-    return _.omit(el, 'email');
-  };
-
-  if (program.email === false) {
-    data = _.map(data, stripEmail);
-  }
-
-  deferred.resolve(data);
+var program = {};
 
-  return deferred.promise;
-};
+program = _.merge(cli.parse(process.argv, version), program);
+program.cwd = _.first(program.args);
 
-//--
 
-var program = {
-  timeout: 5000,
-  cwd: '.',
-  maxBuffer: 25000 * 1024
-};
+var GitContributors = require('../lib/git-contributors').GitContributors;
 
-
-var GitContributors = function GitContributors () {};
-
-GitContributors.prototype.list = function(opts, cb) {
+GitContributors.list(program, function(err, result) {
   'use strict';
 
-  program.markdown = null;
-  program.json = null;
-
-  if (_.isString(opts)) {
-    program.cwd = opts;
-  }
-  else {
-    program = _.merge(program, opts);
-  }
-
-  Q()
-  .then(verifyRepositoryExists)
-  .then(git.log)
-  .then(processLog)
-  .then(filter)
-  .then(format)
-  .done(function(result) {
-    cb(null, result);
-  }, function(err) {
-    cb(err, null);
-  });
-};
-
-module.exports.GitContributors = new GitContributors();
-
-
-// binary
-
-if (!module.parent) {
-
-  var fs      = require('fs');
-  var pkg     = path.resolve(__dirname  + '/../package.json');
-
-  var version = JSON.parse(fs.readFileSync(pkg, 'utf-8')).version;
-
-  program = _.merge(require('../lib/_cli').parse(process.argv, version), program);
-  program.cwd = _.first(program.args);
-
-  var success = function(result) {
-    'use strict';
-    console.log(result);
-  };
-
-  Q()
-  .then(verifyRepositoryExists)
-  .then(git.log)
-  .then(processLog)
-  .then(filter)
-  .then(format)
-  .then(success)
-  .catch(function(err){
-    'use strict';
+  if (err) {
     console.log(err.message);
     process.exit(1);
-  });
-}
+  }
 
+  console.log(result);
+  process.exit(0);
+});