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commit.js
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161 lines (141 loc) · 3.75 KB
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var git = require('../'),
Commit = git.Commit,
events = require('events');
/**
* Retrieve the SHA.
* @return {String}
*/
Commit.prototype.sha = function() {
return this.oid().sha();
};
/**
* Retrieve the commit time as a unix timestamp.
* @return {Number}
*/
Commit.prototype.timeMs = function() {
return this.time() * 1000;
};
/**
* Retrieve the commit time as a Date object.
* @return {Date}
*/
Commit.prototype.date = function() {
return new Date(this.timeMs());
};
/**
* Get the tree associated with this commit.
* @return {Tree}
*/
Commit.prototype.getTree = function(callback) {
this.repo.getTree(this.treeId(), callback);
};
/**
* Retrieve the entry represented by path for this commit.
* Path must be relative to repository root.
*
* @param {String} path
* @param {Function} callback
* @return {TreeEntry}
*/
Commit.prototype.getEntry = function(path, callback) {
this.getTree(function(error, tree) {
if (error) return callback(error);
tree.getEntry(path, callback);
});
};
/**
* Walk the history from this commit backwards.
* An EventEmitter is returned that will emit a 'commit' event for each
* commit in the history, and one 'end' event when the walk is completed.
* Don't forget to call `start()` on the returned event.
*
* @fires Commit#commit
* @fires Commit#end
*
* @return {EventEmitter}
*/
Commit.prototype.history = function() {
var event = new events.EventEmitter();
var oid = this.oid();
var revwalk = this.repo.createRevWalk();
revwalk.sorting.apply(revwalk, arguments);
var commits = [];
event.start = function() {
revwalk.walk(oid, function commitRevWalk(error, commit) {
if (error) return event.emit('error', error);
if (!commit) {
event.emit('end', commits);
return;
}
event.emit('commit', commit);
commits.push(commit);
});
};
return event;
};
/**
* Retrieve the commit's parents -- as commit objects.
*
* @param {Function} callback
* @return {[Commit]} array of commits
*/
Commit.prototype.getParents = function(callback) {
var self = this;
function processParents(commit, n, acc, callback) {
if (n < 0) return callback(null, acc);
self.repo.getCommit(self.parentId(n), function nextParent(error, parent) {
if (error) return callback(error);
processParents(parent, n-1, acc.concat([parent]), callback);
});
}
processParents(this, this.parentCount() - 1, [], callback);
};
/**
* Retrieve the commit's parent shas.
*
* @param {Function} callback
* @return {[Oid]} array of oids
*/
Commit.prototype.parents = function() {
var result = [];
for (var i = 0; i < this.parentCount(); i++) {
result.push(this.parentId(i));
}
return result;
}
/**
* Generate an array of diff trees showing changes between this commit
* and its parent(s).
*
* @param {Function} callback
* @return {[DiffList]} an array of difflists
*/
Commit.prototype.getDiff = function(callback) {
var self = this;
self.getParents(function commitParents(error, parents) {
if (error) return callback(error);
var parentDiffLists = [];
parents.forEach(function commitEachParent(parent) {
parent.getTree(function(error, parentTree) {
if (error) return callback(error);
self.getTree(function(error, thisTree) {
if (error) return callback(error);
parentTree.diff(thisTree, function walkDiffList(error, diffList) {
if (error) return callback(error);
parentDiffLists.push(diffList);
if (parentDiffLists.length === parents.length) {
callback(null, parentDiffLists);
}
});
});
});
});
});
};
/**
* The sha of this commit
* @return {String}
*/
Commit.prototype.toString = function() {
return this.sha();
};