Low Level JS API for local git repos

sample.js

var gitRepo = require('../.');
var fs = require('min-fs');
var run = require('gen-run');
var consume = require('../stream-to-string.js');

run(function* main() {

  // Configure the repo API to work from a local clone.
  var repo = gitRepo({ fs: fs("./my-repo") });

  // Find out what sha1 hash HEAD points to
  var hash = yield repo.db.read("HEAD");
  console.log("HEAD", hash);

  // Load that commit as an object
  var head = yield repo.load(hash);
  console.log(head);

  // Load the tree it points to
  var top = yield repo.load(head.commit.tree);
  console.log(top);

  // Load the first file in the tree
  var obj = yield repo.load(top.tree[0].hash);
  console.log(obj);

  // Buffer the file stream to a string
  var text = yield consume(obj.blob.source);
  // Notice that hash is now defined
  console.log({ hash: obj.hash, body: text });


  // Load an annotated tag
  hash = yield repo.db.read("/refs/tags/test-tag");
  console.log("test-tag", hash);

  var tag = yield repo.load(hash);
  console.log(tag);

});

sample_output.txt

tim@localhost:~/Code/git-repo$ cd example/
tim@localhost:~/Code/git-repo/example$ node --harmony-generators sample.js 
HEAD 168b0147775a6c240893ee7e12671fbd58144ca2
{ hash: '168b0147775a6c240893ee7e12671fbd58144ca2',
  commit: 
   { parents: [],
     message: 'Initial Commit\n',
     tree: '5e1f1f71e00c3a16333121d492d88556d298e479',
     author: 'Tim Caswell <tim@creationix.com> 1371196478 -0500',
     committer: 'Tim Caswell <tim@creationix.com> 1371196478 -0500' } }
{ hash: '5e1f1f71e00c3a16333121d492d88556d298e479',
  tree: 
   [ { mode: 33188,
       path: 'README.md',
       hash: 'e7aecb2c038b16c2ef544b1413d41cbe40aa514d' } ] }
{ hash: undefined,
  blob: { length: 44, source: [Function: read] } }
{ hash: 'e7aecb2c038b16c2ef544b1413d41cbe40aa514d',
  body: '# Sample Project\n\nThis is a sample project.\n' }
test-tag a58ff6c38f1af29044dd2b5b796b78a8ebd114bc
{ hash: 'a58ff6c38f1af29044dd2b5b796b78a8ebd114bc',
  tag: 
   { message: 'This is a test tag\n',
     object: '168b0147775a6c240893ee7e12671fbd58144ca2',
     type: 'commit',
     tag: 'test-tag',
     tagger: 'Tim Caswell <tim@creationix.com> 1371204916 -0500' } }

sample_plain.js

var gitRepo = require('../.');
var fs = require('min-fs');
var consume = require('../stream-to-string.js');

// Configure the repo API to work from a local clone.
var repo = gitRepo({ fs: fs("./my-repo") });

// Find out what sha1 hash HEAD points to
repo.db.read("HEAD")(function (err, hash) {
  if (err) throw err;
  console.log("HEAD", hash);

  // Load that commit as an object
  repo.load(hash)(function (err, head) {
    if (err) throw err;
    console.log(head);
  
    // Load the tree it points to
    repo.load(head.commit.tree)(function (err, top) {
      if (err) throw err;
      console.log(top);
    
      // Load the first file in the tree
      repo.load(top.tree[0].hash)(function (err, obj) {
        if (err) throw err;
        console.log(obj);
      
        // Buffer the file stream to a string
        consume(obj.blob.source)(function (err, text) {
          if (err) throw err;
          // Notice that hash is now defined
          console.log({ hash: obj.hash, body: text });
        });
      });
    });
  });
});





// Load an annotated tag
repo.db.read("/refs/tags/test-tag")(function (err, hash) {
  if (err) throw err;
  console.log("test-tag", hash);
  repo.load(hash)(function (err, tag) {
    if (err) throw err;
    console.log(tag);
  });
});