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args.js
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var objectTypes = ["any", "blob", "commit", "tag", "tree"]
, remoteDirs = ["push", "fetch"]
, __hasProp = {}.hasOwnProperty
, numRequired, count;
function Args (params) {
var paramList = [], param, retlLeft, retRight
, retParam = [];
for (name in params) {
if (!params.hasOwnProperty(name)) continue;
param = params[name];
param.name = name;
paramList.push(param);
}
numRequired = 0;
count = 0;
leftRequired = (function() {
var res = [];
for (var i = 0, len = paramList.length; i < len; i++) {
if (paramList[i].hasOwnProperty("default")) {
break;
}
numRequired++;
res.push(paramList[i]);
}
return res;
})();
paramList.splice(0, leftRequired.length);
rightRequired = (function() {
var _ref = paramList.slice(0).reverse()
, res = [];
for (var i = 0, len = _ref.length; i < len; i++) {
if (_ref[i].hasOwnProperty("default")) {
break;
}
numRequired++;
res.push(_ref[i]);
}
return res;
})();
rightRequired = rightRequired.reverse();
paramList.splice(-rightRequired.length);
argList = Array.prototype.slice.call(Args.caller["arguments"]);
if (argList.length < numRequired) {
throw new Error("Not enough arguments.");
}
left = argList.splice(0, leftRequired.length);
right = argList.splice(-rightRequired.length);
for (var i = 0, len = left.length; i < len; i++) {
count++;
if (!Args.validators[leftRequired[i].type](left[i])) {
throw new TypeError("" + leftRequired[i].name + " (" + count + ") is not a valid " + leftRequired[i].type);
}
retParam.push(left[i]);
};
for (var i = 0, len = paramList.length; i < len; i++) {
count++;
if (argList.length > i) {
if (!Args.validators[paramList[i].type](argList[i])) {
throw new TypeError("" + paramList[i].name + " (" + count + ") is not a valid " + paramList[i].type);
}
retParam.push(argList[i]);
} else {
retParam.push(paramList["default"]);
}
};
for (var i = 0, len = right.length; i < len; i++) {
count++;
if (!Args.validators[rightRequired[i].type](right[i])) {
throw new TypeError("" + rightRequired[i].name + " (" + count + ") is not a valid " + rightRequired[i].type);
}
retParam.push(right[i]);
};
return retParam;
};
Args.oidRegex = oidRegex = /^[a-zA-Z0-9]{0,40}$/;
Args.validators = {
string: function (val) {
return typeof val === "string";
},
function: function (val) {
return typeof val === "function";
},
bool: function (val) {
return typeof val === "boolean";
},
oid: function (val) {
if (typeof val !== "string" && !oidRegex.test(val) && val.length < Args.minOidLength) {
return false;
}
return true;
},
objectType: function (val) {
return objectTypes.indexOf(val) > -1;
},
remoteDir: function (val) {
return remoteDirs.indexOf(val) > -1;
}
};
module.exports = Args;