wonder.js/lib/js/src/service/atom/PathService.js

3d webgl engine

'use strict';


function join(pathArr) {
  return pathArr.join("");
}

var win32SplitPath = (
    function(filename){

var splitDeviceRe =
    /^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/;

var splitTailRe =
    /^([\s\S]*?)((?:\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))(?:[\\\/]*)$/;

  // Separate device+slash from tail
  var result = splitDeviceRe.exec(filename),
      device = (result[1] || '') + (result[2] || ''),
      tail = result[3] || '';
  // Split the tail into dir, basename and extension
  var result2 = splitTailRe.exec(tail),
      dir = result2[1],
      basename = result2[2],
      ext = result2[3];
  return [device, dir, basename, ext];

    }
    );

var normalizeUNCRoot = (
function (device) {
    return '\\\\' + device.replace(/^[\\\/]+/, '').replace(/[\\\/]+/g, '\\');
  }
    );

var dirname = (
    function(path){
  var result = win32SplitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
    }
    );

var normalizeArray = (
// resolves . and .. elements in a path array with directory names there
// must be no slashes or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function (parts, allowAboveRoot) {
  var res = [];
  for (var i = 0; i < parts.length; i++) {
    var p = parts[i];

    // ignore empty parts
    if (!p || p === '.')
      continue;

    if (p === '..') {
      if (res.length && res[res.length - 1] !== '..') {
        res.pop();
      } else if (allowAboveRoot) {
        res.push('..');
      }
    } else {
      res.push(p);
    }
  }

  return res;
}
    );

var resolve = (

function(args) {
    var resolvedDevice = '',
        resolvedTail = '',
        resolvedAbsolute = false;

    for (var i = arguments.length - 1; i >= -1; i--) {
      var path;
      if (i >= 0) {
        path = arguments[i];
      } else if (!resolvedDevice) {
        path = process.cwd();
      } else {
        // Windows has the concept of drive-specific current working
        // directories. If we've resolved a drive letter but not yet an
        // absolute path, get cwd for that drive. We're sure the device is not
        // an unc path at this points, because unc paths are always absolute.
        path = process.env['=' + resolvedDevice];
        // Verify that a drive-local cwd was found and that it actually points
        // to our drive. If not, default to the drive's root.
        if (!path || path.substr(0, 3).toLowerCase() !==
            resolvedDevice.toLowerCase() + '\\') {
          path = resolvedDevice + '\\';
        }
      }

      // Skip empty and invalid entries
      if (!util.isString(path)) {
        throw new TypeError('Arguments to path.resolve must be strings');
      } else if (!path) {
        continue;
      }

      var result = _win32StatPath(path),
          device = result.device,
          isUnc = result.isUnc,
          isAbsolute = result.isAbsolute,
          tail = result.tail;

      if (device &&
          resolvedDevice &&
          device.toLowerCase() !== resolvedDevice.toLowerCase()) {
        // This path points to another device so it is not applicable
        continue;
      }

      if (!resolvedDevice) {
        resolvedDevice = device;
      }
      if (!resolvedAbsolute) {
        resolvedTail = tail + '\\' + resolvedTail;
        resolvedAbsolute = isAbsolute;
      }

      if (resolvedDevice && resolvedAbsolute) {
        break;
      }
    }

    // Convert slashes to backslashes when `resolvedDevice` points to an UNC
    // root. Also squash multiple slashes into a single one where appropriate.
    if (isUnc) {
      resolvedDevice = normalizeUNCRoot(resolvedDevice);
    }

    // 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 tail path
    resolvedTail = normalizeArray(resolvedTail.split(/[\\\/]+/),
                                  !resolvedAbsolute).join('\\');

    return (resolvedDevice + (resolvedAbsolute ? '\\' : '') + resolvedTail) ||
           '.';
  }
    );

exports.join = join;
exports.win32SplitPath = win32SplitPath;
exports.normalizeUNCRoot = normalizeUNCRoot;
exports.dirname = dirname;
exports.normalizeArray = normalizeArray;
exports.resolve = resolve;
/* win32SplitPath Not a pure module */