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github.js
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// Github.js 0.5.1
// (c) 2012 Michael Aufreiter, Development Seed
// Github.js is freely distributable under the MIT license.
// For all details and documentation:
// http://substance.io/michael/github
(function() {
var Github;
var API_URL = 'https://api.github.com';
Github = window.Github = function(options) {
// Util
// =======
function headers() {
return options.auth == 'oauth'
? { Authorization: 'token '+ options.token, Accept: 'application/vnd.github.raw' }
: { Authorization : 'Basic ' + Base64.encode(options.username + ':' + options.password) }
}
function _request(method, path, data, cb) {
$.ajax({
type: method,
url: API_URL + path,
data: JSON.stringify(data),
dataType: 'json',
contentType: 'application/x-www-form-urlencoded',
success: function(res) { cb(null, res); },
error: function(err) { cb(err); },
headers : headers()
});
}
function _raw_request(method, path, data, cb) {
$.ajax({
type: method,
url: API_URL + path,
data: JSON.stringify(data),
contentType: 'application/x-www-form-urlencoded',
success: function(res) { cb(null, res); },
error: function(err) { cb(err); },
headers : headers()
});
}
// USER API
// =======
Github.User = function() {
this.repos = function(cb) {
_request("GET", "/user/repos?type=all&per_page=100", null, function(err, res) {
cb(err, res);
});
};
};
// Repository API
// =======
Github.Repository = function(options) {
var repo = options.name;
var user = options.user;
var that = this;
var repoPath = "/repos/" + user + "/" + repo;
// Get a particular reference
// -------
this.getRef = function(ref, cb) {
_request("GET", repoPath + "/git/refs/heads/" + ref, null, function(err, res) {
if (err) return cb(err);
cb(null, res.object.sha);
});
};
// List all branches of a repository
// -------
this.listBranches = function(cb) {
_request("GET", repoPath + "/git/refs/heads", null, function(err, heads) {
if (err) return cb(err);
cb(null, _.map(heads, function(head) { return _.last(head.ref.split('/')); }));
});
};
// Retrieve the contents of a blob
// -------
this.getBlob = function(sha, cb) {
_raw_request("GET", repoPath + "/git/blobs/" + sha, null, function(err, res) {
cb(err, res);
});
};
// For a given file path, get the corresponding sha (blob for files, tree for dirs)
// TODO: So inefficient, it sucks hairy donkey balls.
// -------
this.getSha = function(branch, path, cb) {
that.getTree(branch+"?recursive=true", function(err, tree) {
var file = _.select(tree, function(file) {
return file.path === path;
})[0];
cb(null, file ? file.sha : null);
});
};
// Retrieve the tree a commit points to
// -------
this.getTree = function(tree, cb) {
_request("GET", repoPath + "/git/trees/"+tree, null, function(err, res) {
if (err) return cb(err);
cb(null, res.tree);
});
};
// Post a new blob object, getting a blob SHA back
// -------
this.postBlob = function(content, cb) {
var data = {
"content": content,
"encoding": "utf-8"
};
_request("POST", repoPath + "/git/blobs", data, function(err, res) {
if (err) return cb(err);
cb(null, res.sha);
});
};
// Update an existing tree adding a new blob object getting a tree SHA back
// -------
this.updateTree = function(baseTree, path, blob, cb) {
var data = {
"base_tree": baseTree,
"tree": [
{
"path": path,
"mode": "100644",
"type": "blob",
"sha": blob
}
]
};
_request("POST", repoPath + "/git/trees", data, function(err, res) {
if (err) return cb(err);
cb(null, res.sha);
});
};
// Post a new tree object having a file path pointer replaced
// with a new blob SHA getting a tree SHA back
// -------
this.postTree = function(tree, cb) {
_request("POST", repoPath + "/git/trees", { "tree": tree }, function(err, res) {
if (err) return cb(err);
cb(null, res.sha);
});
};
// Create a new commit object with the current commit SHA as the parent
// and the new tree SHA, getting a commit SHA back
// -------
this.commit = function(parent, tree, message, cb) {
var data = {
"message": message,
"author": {
"name": options.username
},
"parents": [
parent
],
"tree": tree
};
_request("POST", repoPath + "/git/commits", data, function(err, res) {
if (err) return cb(err);
cb(null, res.sha);
});
};
// Update the reference of your head to point to the new commit SHA
// -------
this.updateHead = function(head, commit, cb) {
_request("PATCH", repoPath + "/git/refs/heads/" + head, { "sha": commit }, function(err, res) {
cb(err);
});
};
// Show repository information
// -------
this.show = function(cb) {
_request("GET", repoPath, null, function(err, info) {
cb(null, info);
});
};
// Read file at given path
// -------
this.read = function(branch, path, cb) {
that.getSha(branch, path, function(err, sha) {
if (!sha) return cb("not found", null);
that.getBlob(sha, cb);
});
};
// Remove a file from the tree
// -------
this.remove = function(branch, path, cb) {
that.getRef(branch, function(err, latestCommit) {
that.getTree(latestCommit+"?recursive=true", function(err, tree) {
// Update Tree
var newTree = _.reject(tree, function(ref) { return ref.path === path });
_.each(newTree, function(ref) {
if (ref.type === "tree") delete ref.sha;
});
that.postTree(newTree, function(err, rootTree) {
that.commit(latestCommit, rootTree, 'Deleted '+path , function(err, commit) {
that.updateHead(branch, commit, function(err) {
cb(err);
});
});
});
});
});
};
// Move a file to a new location
// -------
this.move = function(branch, path, newPath, cb) {
that.getRef(branch, function(err, latestCommit) {
that.getTree(latestCommit+"?recursive=true", function(err, tree) {
// Update Tree
_.each(tree, function(ref) {
if (ref.path === path) ref.path = newPath;
if (ref.type === "tree") delete ref.sha;
});
that.postTree(tree, function(err, rootTree) {
that.commit(latestCommit, rootTree, 'Deleted '+path , function(err, commit) {
that.updateHead(branch, commit, function(err) {
cb(err);
});
});
});
});
});
};
// Write file contents to a given branch and path
// -------
this.write = function(branch, path, content, message, cb) {
that.getRef(branch, function(err, latestCommit) {
that.postBlob(content, function(err, blob) {
that.updateTree(latestCommit, path, blob, function(err, tree) {
that.commit(latestCommit, tree, message, function(err, commit) {
that.updateHead(branch, commit, function(err) {
cb(err);
});
});
});
});
});
};
};
// Top Level API
// -------
this.getRepo = function(user, repo) {
return new Github.Repository({user: user, name: repo});
};
this.getUser = function() {
return new Github.User();
};
};
}).call(this);