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"use strict";
var childProcess = require("child_process");
var os = require("os");
module.exports = function opener(args, options, callback) {
var platform = process.platform;
// Attempt to detect Windows Subystem for Linux (WSL). WSL itself as Linux (which works in most cases), but in
// this specific case we need to treat it as actually being Windows. The "Windows-way" of opening things through
// cmd.exe works just fine here, whereas using xdg-open does not, since there is no X Windows in WSL.
if (platform === "linux" && os.release().indexOf("Microsoft") !== -1) {
platform = "win32";
}
// http://stackoverflow.com/q/1480971/3191, but see below for Windows.
var command;
switch (platform) {
case "win32": {
command = "cmd.exe";
break;
}
case "darwin": {
command = "open";
break;
}
default: {
command = "xdg-open";
break;
}
}
if (typeof args === "string") {
args = [args];
}
if (typeof options === "function") {
callback = options;
options = {};
}
if (options && typeof options === "object" && options.command) {
if (platform === "win32") {
// *always* use cmd on windows
args = [options.command].concat(args);
} else {
command = options.command;
}
}
if (platform === "win32") {
// On Windows, we really want to use the "start" command. But, the rules regarding arguments with spaces, and
// escaping them with quotes, can get really arcane. So the easiest way to deal with this is to pass off the
// responsibility to "cmd /c", which has that logic built in.
//
// Furthermore, if "cmd /c" double-quoted the first parameter, then "start" will interpret it as a window title,
// so we need to add a dummy empty-string window title: http://stackoverflow.com/a/154090/3191
//
// Additionally, on Windows ampersand and caret need to be escaped when passed to "start"
args = args.map(function (value) {
return value.replace(/[&^]/g, "^$&");
});
args = ["/c", "start", "\"\""].concat(args);
}
return childProcess.execFile(command, args, options, callback);
};
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