Code coverage report for src/commit-numstat.js

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require('lazy-ass');
var check = require('check-more-types');
var exec = require('./exec');
 
/*
parses git show --numstat output, which is something like this
 
$ git show --numstat 46350c2
commit 46350c2c9980551d338ce1ad0d8eff7bea9713ec
Author: Gleb Bahmutov <gleb.bahmutov@gmail.com>
Date:   Mon Jan 13 19:04:06 2014 -0500
 
    better gruntfile
 
1       1       .jshintrc
54      25      Gruntfile.js
9       0       complexity.json
2       1       package.json
*/
function parseNumstat(stdout) {
  la(check.unemptyString(stdout), 'missing numstat output', stdout);
  var lines = stdout.split('\n');
  la(lines.length > 3, 'expected more lines', stdout);
 
  var commit = lines[0].split(' ')[1].trim();
  var author = lines[1].split(':')[1].trim();
  // remove Date:
  var date = lines[2].substr(5).trim();
  var message = lines[4].trim();
 
  var k = 6;
  var fileChanges = {};
  for (; k < lines.length; k += 1) {
    if (lines[k]) {
      var parts = lines[k].split('\t');
      console.log('line', k, 'parts', parts)
      var added = Number(parts[0].trim());
      var deleted = Number(parts[1].trim());
      var filename = parts[2].trim();
      fileChanges[filename] = {
        filename: filename,
        added: added,
        deleted: deleted
      };
    }
  }
 
  return {
    commit: commit,
    author: author,
    date: date,
    message: message,
    changes: fileChanges
  };
}
 
function commitNumstat(hash) {
  la(check.unemptyString(hash), 'missing commit hash', hash);
 
  var cmd = 'git show --numstat ' + hash;
  return exec(cmd)
    .then(parseNumstat);
}
 
module.exports = commitNumstat;