shipitjs/lib/vc/Git.js

npm package release management tool

var exec = require('child_process').exec;
var fs = require('fs');
var temp = require('temp');
var _ = require('underscore')._;

var Git = exports.Git = function(conf) {
  this.tagPattern = function() {
    return conf.TagPattern;
  };
  this.signTag = function() {
    return conf.SignTag;
  };
  this.pushTo = function() {
    return conf.PushTo;
  };
};
Git.prototype = {
  commit : function(msg, cb) {
    var that = this;
    var cmd = 'git ls-files -z --others --exclude-per-directory=.gitignore --exclude-from=.git/info/exclude';
    exec(cmd, function(err, stdout) {
      if (err)
        return cb(err);
      if (stdout.length > 0) {
        return cb(new Error("Unknown local files:\n" + stdout + "\nUpdate .gitignore, or git add them"));
      } else {
        temp.open('tmpcomment', function(err, info) {
          if (err)
            return cb(err);
          fs.writeSync(info.fd, msg);
          fs.close(info.fd, function(err) {
            if (err)
              return cb(err);
            exec("git commit -a -F " + info.path, function(err) {
              if (err)
                return cb(err);
              if (that.pushTo()) {
                that.getBranch(function(err, branch) {
                  if (err)
                    return cb(err);
                  var cmd = 'git push ' + that.pushTo() + ' ' + branch;
                  exec(cmd, function(err) {
                    return cb(err);
                  });
                });
              } else {
                return cb(null);
              }
            });
          });
        });
      }
    });
  },
  resetRecentCommit : function(cb) {
    if (!this.pushTo()) {
      exec('git reset --soft HEAD^', function(err) {
        cb(err);
      });
    } else {
      console.warn('[WARN] Can not reset already pushed commit');
      cb(null);
    }
  },
  tagVersion : function(ver, msg, cb) {
    var that = this;
    if (!msg)
      msg = "Tagging version " + ver + ".\n";
    temp.open('tmptag', function(err, info) {
      if (err)
        return cb(err);
      fs.writeSync(info.fd, msg);
      fs.closeSync(info.fd);
      var tag = that.tagPattern() || '';
      if (!tag.match(/\%v/i)) {
        tag += '%v';
      }
      tag = tag.replace(/\%v/, ver);
      tag = tag.replace(/\s/, "");
      var cmd = 'git tag -a';
      if (that.signTag()) {
        cmd += ' -s ';
      }
      cmd += ' -F' + info.path + ' ' + tag;
      exec(cmd, function(err) {
        cb(err);
      });
    });
  },
  deleteTag : function(ver, cb) {
    var tag = this.tagPattern() || '';
    if (!tag.match(/\%v/i)) {
      tag += '%v';
    }
    tag = tag.replace(/\%v/, ver);
    var cmd = 'git tag -d ' + tag;
    exec(cmd, function(err) {
      cb(err);
    });
  },
  localDiff : function(file, diffTarget, cb) {
    var cmd = 'git diff --no-color ' + diffTarget + ' ' + file;
    exec(cmd, function(err, stdout) {
      if (err)
        return cb(err);
      return cb(null, stdout);
    });
  },
  getBranch : function(cb) {
    fs.readFile('.git/HEAD', 'utf8', function(err, data) {
      if (err)
        return cb(err);
      var head = data.match(/ref: refs\/heads\/(\S+)/);
      cb(null, head[1]);
    });
  },
  existsTaggedVersion : function(ver, cb) {
    exec('git tag -l ' + ver, function(err, stdout) {
      if (err)
        return cb(err);
      var tag = stdout.replace(/\s+$/, '');
      if (tag.length === 0) {
        tag = null;
      }
      cb(null, tag);
    });
  },
  areLocalDiffs : function(ver, cb) {
    exec('git diff --no-color ' + ver, function(err, stdout) {
      if (err)
        return cb(err);
      var res = stdout.match(/\S/) ? true : false;
      cb(null, res);
    });
  }
};