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nodegit/lib/utils/lookup_wrapper.js at v0.4.0 · nodegit/nodegit · GitHub

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var Promise = require("nodegit-promise");

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

/**

* Wraps a method so that you can pass in either a string, OID or the object

* itself and you will always get back a promise that resolves to the object.

* @param {Object} objectType The object type that you're expecting to receive.

* @param {Function} lookupFunction The function to do the lookup for the

* object. Defaults to `objectType.lookup`.

* @return {Function}

*/

function lookupWrapper(objectType, lookupFunction) {

lookupFunction = lookupFunction || objectType.lookup;

return function(repo, id, callback) {

if (id instanceof objectType) {

return Promise.resolve(id).then(function(obj) {

obj.repo = repo;

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

callback(null, obj);

}

return obj;

}, callback);

}

return lookupFunction(repo, id).then(function(obj) {

obj.repo = repo;

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

callback(null, obj);

}

return obj;

}, callback);

};

}

NodeGit.Utils.lookupWrapper = lookupWrapper;

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