在AppleScript中,可以使用以下行获取当前脚本所在文件夹的POSIX路径:
POSIX path of ((path to me as text) & "::")
示例结果:/Users/aaron/Git/test/
JavaScript的等价物是什么?
不包含ObjC的纯JXA代码:
App = Application.currentApplication()
App.includeStandardAdditions = true
SystemEvents = Application('System Events')
var pathToMe = App.pathTo(this)
var containerPOSIXPath = SystemEvents.files[pathToMe.toString()].container().posixPath()
这里有一种方法[注意:我不再推荐这种方法。请参阅下面的编辑]:
app = Application.currentApplication();
app.includeStandardAdditions = true;
path = app.pathTo(this);
app.doShellScript('dirname '' + path + ''') + '/';
注意path
周围的单引号,以便在doShellScript 中使用带空格的路径等
编辑在因使用相当不安全的路径引用方法而被@foo打了一巴掌之后,我想用修改这个答案
ObjC.import("Cocoa");
app = Application.currentApplication();
app.includeStandardAdditions = true;
thePath = app.pathTo(this);
thePathStr = $.NSString.alloc.init;
thePathStr = $.NSString.alloc.initWithUTF8String(thePath);
thePathStrDir = (thePathStr.stringByDeletingLastPathComponent);
thePathStrDir.js + "/";
当然,如果你要使用这个字符串,你仍然需要处理它中是否有可疑的字符。但至少在现阶段,这不是问题。这还演示了JXA用户可以使用的一些概念,比如使用ObjC桥和.js
将字符串"强制"为JavaScript字符串(来自NSString)。
通过提供自包含的实用程序功能来补充现有的有用答案:
// Return the POSIX path of the folder hosting this script / app.
// E.g., from within '/foo/bar.scpt', returns '/foo'.
function myPath() {
var app = Application.currentApplication(); app.includeStandardAdditions = true
return $(app.pathTo(this).toString()).stringByDeletingLastPathComponent.js
}
// Return the filename root (filename w/o extension) of this script / app.
// E.g., from within '/foo/bar.scpt', returns 'bar'.
// (Remove `.stringByDeletingPathExtension` if you want to retain the extension.)
function myName() {
var app = Application.currentApplication(); app.includeStandardAdditions = true
return $(app.pathTo(this).toString()).lastPathComponent.stringByDeletingPathExtension.js
}
注意:这些函数使用了ObjC桥的快捷语法形式($(...)
表示ObjC.wrap()
,.js
表示ObjC.unwrap()
,还利用了默认情况下Foundation
框架的符号可用的事实-请参阅OS X 10.10 JXA发行说明。
很容易将这些函数概括为提供POSIX dirname
和basename
实用程序的等价物:
// Returns the parent path of the specified filesystem path.
// A trailing '/' in the input path is ignored.
// Equivalent of the POSIX dirname utility.
// Examples:
// dirname('/foo/bar') // -> '/foo'
// dirname('/foo/bar/') // ditto
function dirname(path) {
return $(path.toString()).stringByDeletingLastPathComponent.js
}
// Returns the filename component of the specified filesystem path.
// A trailing '/' in the input path is ignored.
// If the optional <extToStrip> is specified:
// - If it it is a string, it is removed from the result, if it matches at
// the end (case-sensitively) - do include the '.'
// - Otherwise (Boolean or number), any truthy value causes any extension
// (suffix) present to be removed.
// Equivalent of the POSIX basename utility; the truthy semantics of the
// 2nd argument are an extension.
// Examples:
// basename('/foo/bar') // -> 'bar'
// basename('/foo/bar/') // ditto
// basename('/foo/bar.scpt', 1) // -> 'bar'
// basename('/foo/bar.scpt', '.scpt') // -> 'bar'
// basename('/foo/bar.jxa', '.scpt') // -> 'bar.jxa'
function basename(path, extToStrip) {
path = path.toString()
if (path[path.length-1] === '/') { path = path.slice(0, -1) }
if (typeof extToStrip === 'string') {
return path.slice(-extToStrip.length) === extToStrip ? $(path).lastPathComponent.js.slice(0, -extToStrip.length) : $(path).lastPathComponent.js
} else { // assumed to be numeric: if truthy, strip any extension
return extToStrip ? $(path).lastPathComponent.stringByDeletingPathExtension.js : $(path).lastPathComponent.js
}
}
所以总结一下我现在所做的,我在回答我自己的问题。利用@foo和@CRGreen的出色回应,我得出了以下结论:
ObjC.import('Foundation');
var app, path, dir;
app = Application.currentApplication();
app.includeStandardAdditions = true;
path = app.pathTo(this);
dir = $.NSString.alloc.initWithUTF8String(path).stringByDeletingLastPathComponent.js + '/';
这与@CRGreen的回应非常接近,但它更简洁,我正在导入Foundation
而不是Cocoa
。另外,我声明了我正在使用的变量,以避免意外的全局变量。
使用-[NSString stringByDeletingLastPathComponent]
,它已经知道如何安全地删除最后一个路径段:
ObjC.import('Foundation')
path = ObjC.unwrap($(path).stringByDeletingLastPathComponent)
或者,如果您喜欢更危险的生活,可以使用正则表达式从POSIX路径字符串中剥离最后一个路径段。在我的脑海里(注意事项等):
path = path.replace(//[^/]+/*$/,'').replace(/^$/,'/')
(请注意,第二个replace()
需要正确处理具有<2个部分的路径。)
我想我找到了一种更简单的方法,可以在不调用ObjC的情况下获得父文件夹。
var app = Application.currentApplication();
app.includeStandardAdditions = true;
thePath = app.pathTo(this);
Path(thePath + '/../../')
上面有很多有趣的解决方案。
这是我的,它不需要ObjC,并返回一个可能需要属性的对象。
'use strict';
var oScript = getScriptProp(this);
/*oScript Properties
Path
Name
ParentPath
Folder
*/
oScript.ParentPath;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
function getScriptProp(pRefObject) {
var app = Application.currentApplication()
app.includeStandardAdditions = true
var pathScript = app.pathTo(pRefObject).toString();
var pathArr = pathScript.split("/")
var oScript = {
Path: pathScript,
Name: pathArr[pathArr.length - 1],
ParentPath: pathArr.slice(0, pathArr.length - 1).join("/"),
Folder: pathArr[pathArr.length - 2]
};
return oScript
}