jake/lib/npm_publish_task.js

JavaScript build tool, similar to Make or Rake

/*
 * Jake JavaScript build tool
 * Copyright 2112 Matthew Eernisse (mde@fleegix.org)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

var fs = require('fs')
  , exec = require('child_process').exec
  , currDir = process.cwd();

var NpmPublishTask = function (name, packageFiles) {
  this.name = name;
  this.packageFiles = packageFiles;
  this.define();
};


NpmPublishTask.prototype = new (function () {

  var getPackage = function () {
    var pkg = JSON.parse(fs.readFileSync(process.cwd() + '/package.json').toString());
    return pkg;
  };

  var getPackageVersionNumber = function () {
    return getPackage().version;
  };

  this.define = function () {
    var self = this;

    namespace('npm', function () {
      task('fetchTags', function () {
        // Make sure local tags are up to date
        cmds = [
          'git fetch --tags'
        ];
        jake.exec(cmds, function () {
          console.log('Fetched remote tags.');
          complete();
        });
      }, {async: true});

      task('version', function () {
        // Only bump, push, and tag if the Git repo is clean
        exec('git status --porcelain --untracked-files=no',
            function (err, stdout, stderr) {
          var cmds
            , path
            , pkg
            , version
            , arr
            , patch
            , message;

          if (err) {
            fail(err);
          }
          if (stderr) {
            fail(new Error(stderr));
          }
          if (stdout.length) {
            fail(new Error('Git repository is not clean.'));
          }

          // Grab the current version-string
          path = process.cwd() + '/package.json';
          pkg = getPackage();
          version = pkg.version;
          // Increment the patch-number for the version
          arr = version.split('.');
          patch = parseInt(arr.pop(), 10) + 1;
          arr.push(patch);
          version = arr.join('.');
          // New package-version
          pkg.version = version;
          // Commit-message
          message = 'Version ' + version

          // Update package.json with the new version-info
          fs.writeFileSync(path, JSON.stringify(pkg, true, 2));

          cmds = [
            'git commit package.json -m "' + message + '"'
          , 'git push origin master'
          , 'git tag -a v' + version + ' -m "' + message + '"'
          , 'git push --tags'
          ];

          jake.exec(cmds, function () {
            var version = getPackageVersionNumber();
            console.log('Bumped version number to v' + version + '.');
            complete();
          });
        });
      }, {async: true});

      task('definePackage', function () {
        var version = getPackageVersionNumber()
          , t;
        t = new jake.PackageTask(self.name, 'v' + version, function () {
          this.packageFiles.include(self.packageFiles);
          this.needTarGz = true;
        });
      });

      task('package', function () {
        var definePack = jake.Task['npm:definePackage']
          , pack = jake.Task['package']
          , version = getPackageVersionNumber();
        // May have already been run
        definePack.reenable(true);
        definePack.addListener('complete', function () {
          pack.addListener('complete', function () {
            console.log('Created package for ' + self.name + ' v' + version);
            complete();
          });
          pack.invoke();
        });
        definePack.invoke();
      }, {async: true});

      task('publish', function () {
        var version = getPackageVersionNumber();
        console.log('Publishing ' + self.name + ' v' + version);
        cmds = [
          'npm publish pkg/' + self.name + '-v' + version + '.tar.gz'
        ];
        // Hackity hack -- NPM publish sometimes returns errror like:
        // Error sending version data\nnpm ERR!
        // Error: forbidden 0.2.4 is modified, should match modified time
        setTimeout(function () {
          jake.exec(cmds, function () {
            console.log('Published to NPM');
            complete();
          }, {stdout: true});
        }, 5000);
      }, {async: true});

      task('cleanup', function () {
        var clobber = jake.Task['clobber'];
        clobber.reenable(true);
        clobber.invoke();
        console.log('Cleaned up package');
      });

    });

    desc('Bump version-number, package, and publish to NPM.');
    task('publish', ['npm:fetchTags', 'npm:version', 'npm:package',
        'npm:publish', 'npm:cleanup'], function () {});
  };

})();

jake.NpmPublishTask = NpmPublishTask;
exports.NpmPublishTask = NpmPublishTask;