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exports.join = function () {
return exports.normalize(Array.prototype.join.call(arguments, "/"));
};
exports.normalizeArray = function (parts, keepBlanks) {
var directories = [], prev;
for (var i = 0, l = parts.length - 1; i <= l; i++) {
var directory = parts[i];
// if it's blank, but it's not the first thing, and not the last thing, skip it.
if (directory === "" && i !== 0 && i !== l && !keepBlanks) continue;
// if it's a dot, and there was some previous dir already, then skip it.
if (directory === "." && prev !== undefined) continue;
// if it starts with "", and is a . or .., then skip it.
if (directories.length === 1 && directories[0] === "" && (
directory === "." || directory === "..")) continue;
if (
directory === ".."
&& directories.length
&& prev !== ".."
&& prev !== "."
&& prev !== undefined
&& (prev !== "" || keepBlanks)
) {
directories.pop();
prev = directories.slice(-1)[0];
} else {
if (prev === ".") directories.pop();
directories.push(directory);
prev = directory;
}
}
return directories;
};
exports.normalize = function (path, keepBlanks) {
return exports.normalizeArray(path.split("/"), keepBlanks).join("/");
};
exports.dirname = function (path) {
if (path.length > 1 && '/' === path[path.length-1]) {
path = path.replace(/\/+$/, '');
}
var lastSlash = path.lastIndexOf('/');
switch (lastSlash) {
case -1:
return '.';
case 0:
return '/';
default:
return path.substring(0, lastSlash);
}
};
exports.filename = function () {
throw new Error("path.filename is deprecated. Please use path.basename instead.");
};
exports.basename = function (path, ext) {
var f = path.substr(path.lastIndexOf("/") + 1);
if (ext && f.substr(-1 * ext.length) === ext) {
f = f.substr(0, f.length - ext.length);
}
return f;
};
exports.extname = function (path) {
var dot = path.lastIndexOf('.'),
slash = path.lastIndexOf('/');
// The last dot must be in the last path component, and it (the last dot) must
// not start the last path component (i.e. be a dot that signifies a hidden
// file in UNIX).
return dot <= slash + 1 ? '' : path.substring(dot);
};
exports.exists = function (path, callback) {
process.binding('fs').stat(path, function (err, stats) {
if (callback) callback(err ? false : true);
});
};
exports.existsSync = function (path) {
try {
process.binding('fs').stat(path);
return true;
} catch(e){
return false;
}
};