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IN // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE // USE OR OTHER DEALINGS IN THE SOFTWARE. // resolves . and .. elements in a path array with directory names there // must be no slashes, empty elements, or device names (c:\) in the array // (so also no leading and trailing slashes - it does not distinguish // relative and absolute paths) function normalizeArray(parts, allowAboveRoot) { // if the path tries to go above the root, `up` ends up > 0 var up = 0; for (var i = parts.length - 1; i >= 0; i--) { var last = parts[i]; if (last === '.') { parts.splice(i, 1); } else if (last === '..') { parts.splice(i, 1); up++; } else if (up) { parts.splice(i, 1); up--; } } // if the path is allowed to go above the root, restore leading ..s if (allowAboveRoot) { for (; up--; up) { parts.unshift('..'); } } return parts; } // path.resolve([from ...], to) // posix version exports.resolve = function() { var resolvedPath = '', resolvedAbsolute = false; for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) { var path = (i >= 0) ? arguments[i] : process.cwd(); // Skip empty and invalid entries if (typeof path !== 'string') { throw new TypeError('Arguments to path.resolve must be strings'); } else if (!path) { continue; } resolvedPath = path + '/' + resolvedPath; resolvedAbsolute = path.charAt(0) === '/'; } // At this point the path should be resolved to a full absolute path, but // handle relative paths to be safe (might happen when process.cwd() fails) // Normalize the path resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) { return !!p; }), !resolvedAbsolute).join('/'); return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.'; }; // path.normalize(path) // posix version exports.normalize = function(path) { var isAbsolute = exports.isAbsolute(path), trailingSlash = substr(path, -1) === '/'; // Normalize the path path = normalizeArray(filter(path.split('/'), function(p) { return !!p; }), !isAbsolute).join('/'); if (!path && !isAbsolute) { path = '.'; } if (path && trailingSlash) { path += '/'; } return (isAbsolute ? '/' : '') + path; }; // posix version exports.isAbsolute = function(path) { return path.charAt(0) === '/'; }; // posix version exports.join = function() { var paths = Array.prototype.slice.call(arguments, 0); return exports.normalize(filter(paths, function(p, index) { if (typeof p !== 'string') { throw new TypeError('Arguments to path.join must be strings'); } return p; }).join('/')); }; // path.relative(from, to) // posix version exports.relative = function(from, to) { from = exports.resolve(from).substr(1); to = exports.resolve(to).substr(1); function trim(arr) { var start = 0; for (; start < arr.length; start++) { if (arr[start] !== '') break; } var end = arr.length - 1; for (; end >= 0; end--) { if (arr[end] !== '') break; } if (start > end) return []; return arr.slice(start, end - start + 1); } var fromParts = trim(from.split('/')); var toParts = trim(to.split('/')); var length = Math.min(fromParts.length, toParts.length); var samePartsLength = length; for (var i = 0; i < length; i++) { if (fromParts[i] !== toParts[i]) { samePartsLength = i; break; } } var outputParts = []; for (var i = samePartsLength; i < fromParts.length; i++) { outputParts.push('..'); } outputParts = outputParts.concat(toParts.slice(samePartsLength)); return outputParts.join('/'); }; exports.sep = '/'; exports.delimiter = ':'; exports.dirname = function (path) { if (typeof path !== 'string') path = path + ''; if (path.length === 0) return '.'; var code = path.charCodeAt(0); var hasRoot = code === 47 /*/*/; var end = -1; var matchedSlash = true; for (var i = path.length - 1; i >= 1; --i) { code = path.charCodeAt(i); if (code === 47 /*/*/) { if (!matchedSlash) { end = i; break; } } else { // We saw the first non-path separator matchedSlash = false; } } if (end === -1) return hasRoot ? '/' : '.'; if (hasRoot && end === 1) { // return '//'; // Backwards-compat fix: return '/'; } return path.slice(0, end); }; function basename(path) { if (typeof path !== 'string') path = path + ''; var start = 0; var end = -1; var matchedSlash = true; var i; for (i = path.length - 1; i >= 0; --i) { if (path.charCodeAt(i) === 47 /*/*/) { // If we reached a path separator that was not part of a set of path // separators at the end of the string, stop now if (!matchedSlash) { start = i + 1; break; } } else if (end === -1) { // We saw the first non-path separator, mark this as the end of our // path component matchedSlash = false; end = i + 1; } } if (end === -1) return ''; return path.slice(start, end); } // Uses a mixed approach for backwards-compatibility, as ext behavior changed // in new Node.js versions, so only basename() above is backported here exports.basename = function (path, ext) { var f = basename(path); if (ext && f.substr(-1 * ext.length) === ext) { f = f.substr(0, f.length - ext.length); } return f; }; exports.extname = function (path) { if (typeof path !== 'string') path = path + ''; var startDot = -1; var startPart = 0; var end = -1; var matchedSlash = true; // Track the state of characters (if any) we see before our first dot and // after any path separator we find var preDotState = 0; for (var i = path.length - 1; i >= 0; --i) { var code = path.charCodeAt(i); if (code === 47 /*/*/) { // If we reached a path separator that was not part of a set of path // separators at the end of the string, stop now if (!matchedSlash) { startPart = i + 1; break; } continue; } if (end === -1) { // We saw the first non-path separator, mark this as the end of our // extension matchedSlash = false; end = i + 1; } if (code === 46 /*.*/) { // If this is our first dot, mark it as the start of our extension if (startDot === -1) startDot = i; else if (preDotState !== 1) preDotState = 1; } else if (startDot !== -1) { // We saw a non-dot and non-path separator before our dot, so we should // have a good chance at having a non-empty extension preDotState = -1; } } if (startDot === -1 || end === -1 || // We saw a non-dot character immediately before the dot preDotState === 0 || // The (right-most) trimmed path component is exactly '..' preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) { return ''; } return path.slice(startDot, end); }; function filter (xs, f) { if (xs.filter) return xs.filter(f); var res = []; for (var i = 0; i < xs.length; i++) { if (f(xs[i], i, xs)) res.push(xs[i]); } return res; } // String.prototype.substr - negative index don't work in IE8 var substr = 'ab'.substr(-1) === 'b' ? function (str, start, len) { return str.substr(start, len) } : function (str, start, len) { if (start < 0) start = str.length + start; return str.substr(start, len); } ;