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Name	Size	Permission	Date
Config.js	6.09 KB	-rw-r--r--	2025-04-08 13:05
IsAbsolute.js	606 B	-rw-r--r--	2025-04-08 13:05
copydirSync.js	2.82 KB	-rw-r--r--	2025-04-08 13:05
deleteFolderRecursive.js	480 B	-rw-r--r--	2025-04-08 13:05
find-package-json.js	1.73 KB	-rw-r--r--	2025-04-08 13:05
fmt.js	2.04 KB	-rw-r--r--	2025-04-08 13:05
isbinaryfile.js	2.64 KB	-rw-r--r--	2025-04-08 13:05
json5.js	22.94 KB	-rw-r--r--	2025-04-08 13:05
open.js	1.57 KB	-rw-r--r--	2025-04-08 13:05
passwd.js	1.13 KB	-rw-r--r--	2025-04-08 13:05
promise.min.js	2.59 KB	-rw-r--r--	2025-04-08 13:05
sexec.js	1.17 KB	-rw-r--r--	2025-04-08 13:05
treeify.js	3.46 KB	-rw-r--r--	2025-04-08 13:05
which.js	3.49 KB	-rw-r--r--	2025-04-08 13:05
xdg-open	20.93 KB	-rwxr-xr-x	2025-04-08 13:05

Rename

var fs = require('fs');
var path = require('path');
var cst = require('../../constants.js')

// XP's system default value for `PATHEXT` system variable, just in case it's not
// set on Windows.
var XP_DEFAULT_PATHEXT = '.com;.exe;.bat;.cmd;.vbs;.vbe;.js;.jse;.wsf;.wsh';

// For earlier versions of NodeJS that doesn't have a list of constants (< v6)
var FILE_EXECUTABLE_MODE = 1;

function statFollowLinks() {
  return fs.statSync.apply(fs, arguments);
}

function isWindowsPlatform() {
  return cst.IS_WINDOWS;
}

// Cross-platform method for splitting environment `PATH` variables
function splitPath(p) {
  return p ? p.split(path.delimiter) : [];
}

// Tests are running all cases for this func but it stays uncovered by codecov due to unknown reason
/* istanbul ignore next */
function isExecutable(pathName) {
  try {
    // TODO(node-support): replace with fs.constants.X_OK once remove support for node < v6
    fs.accessSync(pathName, FILE_EXECUTABLE_MODE);
  } catch (err) {
    return false;
  }
  return true;
}

function checkPath(pathName) {
  return fs.existsSync(pathName) && !statFollowLinks(pathName).isDirectory()
    && (isWindowsPlatform() || isExecutable(pathName));
}

//@
//@ ### which(command)
//@
//@ Examples:
//@
//@ ```javascript
//@ var nodeExec = which('node');
//@ ```
//@
//@ Searches for `command` in the system's `PATH`. On Windows, this uses the
//@ `PATHEXT` variable to append the extension if it's not already executable.
//@ Returns a [ShellString](#shellstringstr) containing the absolute path to
//@ `command`.
function _which(cmd) {
  if (!cmd) console.error('must specify command');

var options = {}

var isWindows = isWindowsPlatform();
  var pathArray = splitPath(process.env.PATH);

var queryMatches = [];

// No relative/absolute paths provided?
  if (cmd.indexOf('/') === -1) {
    // Assume that there are no extensions to append to queries (this is the
    // case for unix)
    var pathExtArray = [''];
    if (isWindows) {
      // In case the PATHEXT variable is somehow not set (e.g.
      // child_process.spawn with an empty environment), use the XP default.
      var pathExtEnv = process.env.PATHEXT || XP_DEFAULT_PATHEXT;
      pathExtArray = splitPath(pathExtEnv.toUpperCase());
    }

// Search for command in PATH
    for (var k = 0; k < pathArray.length; k++) {
      // already found it
      if (queryMatches.length > 0 && !options.all) break;

var attempt = path.resolve(pathArray[k], cmd);

if (isWindows) {
        attempt = attempt.toUpperCase();
      }

if (queryMatches.length > 0) {
    return options.all ? queryMatches : queryMatches[0];
  }
  return options.all ? [] : null;
}

module.exports = _which;