nodegit/lib/commit.js at master · lhc-up/nodegit · GitHub

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var events = require("events");

var fp = require("lodash/fp");

var NodeGit = require("../");

var Commit = NodeGit.Commit;

var LookupWrapper = NodeGit.Utils.lookupWrapper;

var _amend = Commit.prototype.amend;

/**

* Retrieves the commit pointed to by the oid

* @async

* @param {Repository} repo The repo that the commit lives in

* @param {String|Oid|Commit} id The commit to lookup

* @return {Commit}

Commit.lookup = LookupWrapper(Commit);

/**

* Amend a commit

* @async

* @param {String} update_ref

* @param {Signature} author

* @param {Signature} committer

* @param {String} message_encoding

* @param {String} message

* @param {Tree|Oid} tree

* @param {Oid} callback

Commit.prototype.amend = function (

updateRef, author, committer, message_encoding, message, tree, callback) {

var repo = this.repo;

var _this = this;

var treePromise;

if (tree instanceof NodeGit.Oid){

treePromise = repo.getTree(tree);

} else {

treePromise = Promise.resolve(tree);

}

return treePromise

.then(function(treeObject){

return _amend.call(_this,

updateRef,

author,

committer,

message_encoding,

message,

treeObject

);

});

};

/**

* Amend a commit with the given signature

* @async

* @param {String} updateRef

* @param {Signature} author

* @param {Signature} committer

* @param {String} messageEncoding

* @param {String} message

* @param {Tree|Oid} tree

* @param {Function} onSignature Callback to be called with string to be signed

* @return {Oid}

Commit.prototype.amendWithSignature = function(

updateRef,

author,

committer,

messageEncoding,

message,

tree,

onSignature

) {

let repo = this.repo;

let parentOids = this.parents();

let _this = this;

let promises = [];

if (tree instanceof NodeGit.Oid) {

promises.push(repo.getTree(tree));

} else {

promises.push(Promise.resolve(tree));

}

parentOids.forEach(function (parentOid) {

promises.push(repo.getCommit(parentOid));

});

let treeObject;

let parents;

let commitContent;

let commit;

let skippedSigning;

let resolvedAuthor;

let resolvedCommitter;

let resolvedMessageEncoding;

let resolvedMessage;

let resolvedTree;

let createCommitPromise = Promise.all(promises)

.then(function(results) {

treeObject = fp.head(results);

parents = fp.tail(results);

return _this.getTree();

})

.then(function(commitTreeResult) {

let commitTree = commitTreeResult;

let truthyArgs = fp.omitBy(

fp.isNil,

{

author,

committer,

messageEncoding,

message,

tree: treeObject

}

);

let commitFields = {

author: _this.author(),

committer: _this.committer(),

messageEncoding: _this.messageEncoding(),

message: _this.message(),

tree: commitTree

};

({

author: resolvedAuthor,

committer: resolvedCommitter,

messageEncoding: resolvedMessageEncoding,

message: resolvedMessage,

tree: resolvedTree

} = fp.assign(

commitFields,

truthyArgs

));

return Commit.createBuffer(

repo,

resolvedAuthor,

resolvedCommitter,

resolvedMessageEncoding,

resolvedMessage,

resolvedTree,

parents.length,

parents

);

})

.then(function(commitContentResult) {

commitContent = commitContentResult;

if (!commitContent.endsWith("\n")) {

commitContent += "\n";

}

return onSignature(commitContent);

})

.then(function({ code, field, signedData }) {

switch (code) {

case NodeGit.Error.CODE.OK:

return Commit.createWithSignature(

repo,

commitContent,

signedData,

field

);

case NodeGit.Error.CODE.PASSTHROUGH:

skippedSigning = true;

return Commit.create(

repo,

updateRef,

resolvedAuthor,

resolvedCommitter,

resolvedMessageEncoding,

resolvedMessage,

resolvedTree,

parents.length,

parents

);

default: {

const error = new Error(

`Commit.amendWithSignature threw with error code ${code}`

);

error.errno = code;

throw error;

}

});

if (!updateRef) {

return createCommitPromise;

}

return createCommitPromise

.then(function(commitOid) {

if (skippedSigning) {

return commitOid;

}

return repo.getCommit(commitOid)

.then(function(commitResult) {

commit = commitResult;

return repo.getReference(updateRef);

}).then(function(ref) {

return ref.setTarget(

commitOid,

`commit (amend): ${commit.summary()}`

);

}).then(function() {

return commitOid;

});

};

/**

* Retrieve the commit time as a Date object.

* @return {Date}

Commit.prototype.date = function() {

return new Date(this.timeMs());

};

/**

* Generate an array of diff trees showing changes between this commit

* and its parent(s).

* @async

* @param {Function} callback

* @return {Array<Diff>} an array of diffs

Commit.prototype.getDiff = function(callback) {

return this.getDiffWithOptions(null, callback);

};

/**

* Generate an array of diff trees showing changes between this commit

* and its parent(s).

* @async

* @param {Object} options

* @param {Function} callback

* @return {Array<Diff>} an array of diffs

Commit.prototype.getDiffWithOptions = function(options, callback) {

var commit = this;

return commit.getTree().then(function(thisTree) {

return commit.getParents().then(function(parents) {

var diffs;

if (parents.length) {

diffs = parents.map(function(parent) {

return parent.getTree().then(function(parentTree) {

return thisTree.diffWithOptions(parentTree, options);

});

} else {

diffs = [thisTree.diffWithOptions(null, options)];

}

return Promise.all(diffs);

});

}).then(function(diffs) {

if (typeof callback === "function") {

callback(null, diffs);

}

return diffs;

}, callback);

};

/**

* Retrieve the entry represented by path for this commit.

* Path must be relative to repository root.

* @async

* @param {String} path

* @return {TreeEntry}

Commit.prototype.getEntry = function(path, callback) {

return this.getTree().then(function(tree) {

return tree.getEntry(path).then(function(entry) {

if (typeof callback === "function") {

callback(null, entry);

}

return entry;

});

}, callback);

};

/**

* Retrieve the commit's parents as commit objects.

* @async

* @param {number} limit Optional amount of parents to return.

* @param {Function} callback

* @return {Array<Commit>} array of commits

Commit.prototype.getParents = function(limit, callback) {

var parents = [];

// Shift arguments.

if (typeof limit === "function") {

callback = limit;

}

// If no limit was set, default to the maximum parents.

limit = typeof limit === "number" ? limit : this.parentcount();

limit = Math.min(limit, this.parentcount());

for (var i = 0; i < limit; i++) {

var oid = this.parentId(i);

var parent = this.repo.getCommit(oid);

parents.push(parent);

}

// Wait for all parents to complete, before returning.

return Promise.all(parents).then(function(parents) {

if (typeof callback === "function") {

callback(null, parents);

}

return parents;

}, callback);

};

/**

* @typedef extractedSignature

* @type {Object}

* @property {String} signature the signature of the commit

* @property {String} signedData the extracted signed data

/**

* Retrieve the signature and signed data for a commit.

* @param {String} field Optional field to get from the signature,

* defaults to gpgsig

* @return {extractedSignature}

Commit.prototype.getSignature = function(field) {

return Commit.extractSignature(this.repo, this.id(), field);

};

/**

* Get the tree associated with this commit.

* @async

* @return {Tree}

Commit.prototype.getTree = function(callback) {

return this.repo.getTree(this.treeId(), 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 EventEmitter#commit Commit

* @fires EventEmitter#end Array<Commit>

* @fires EventEmitter#error Error

* @return {EventEmitter}

* @start start()

Commit.prototype.history = function() {

var event = new events.EventEmitter();

var oid = this.id();

var revwalk = this.repo.createRevWalk();

revwalk.sorting.apply(revwalk, arguments);

var commits = [];

event.start = function() {

revwalk.walk(oid, function commitRevWalk(error, commit) {

if (error) {

if (error.errno === NodeGit.Error.CODE.ITEROVER) {

event.emit("end", commits);

return;

} else {

return event.emit("error", error);

}

event.emit("commit", commit);

commits.push(commit);

});

};

return event;

};

/**

* Retrieve the commit's parent shas.

* @return {Array<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;

};

/**

* Retrieve the SHA.

* @return {String}

Commit.prototype.sha = function() {

return this.id().toString();

};

/**

* Retrieve the commit time as a unix timestamp.

* @return {Number}

Commit.prototype.timeMs = function() {

return this.time() * 1000;

};

/**

* The sha of this commit

* @return {String}

Commit.prototype.toString = function() {

return this.sha();

};

nodegit/lib/commit.js at master · lhc-up/nodegit · GitHub

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