Get directory from a file path or url
I am trying to get the directory location of a file, and I’m not sure how to get it. I can’t seem to find a module that allows me to do this.
So for example say I have this string:
/this/is/a/path/to/a/file.html
how can I get this:
/this/is/a/path/to/a
I know I can use something like this:
path.substr(0, path.lastIndexOf("https://stackoverflow.com/") - 1);
But I am not sure if that is as good of a method as something that might be built in to node.
I have also tried:
var info = url.parse(full_path);
console.log(info);
and the result doesn’t return what I am looking for, that gets the full path including the filename.
So, is there something built into node that can do this and do it well?
Using path module of node.js:
path.dirname('/this/is/a/path/to/a/file');
returns
'/this/is/a/path/to/a'
Using plain JS, this will work:
var e="/this/is/a/path/to/a/file.html"
e.split("https://stackoverflow.com/").slice(0,-1).join("https://stackoverflow.com/") //split to array & remove last element
//result: '/this/is/a/path/to/a'
OR… if you prefer a one liner (using regex):
"/this/is/a/path/to/a/file.html".replace(/(.*?)[^/]*\..*$/,'$1')
//result: '/this/is/a/path/to/a/'
OR… finally, the good old fashioned (and faster):
var e="/this/is/a/path/to/a/file.html"
e.substr(0, e.lastIndexOf("https://stackoverflow.com/"))
//result: '/this/is/a/path/to/a'
I think you’re looking for path.dirname
filepath.split("https://stackoverflow.com/").slice(0,-1).join("https://stackoverflow.com/"); // get dir of filepath
- split string into array delimited by “https://stackoverflow.com/”
- drop the last element of the array (which would be the file name + extension)
- join the array w/ “https://stackoverflow.com/” to generate the directory path
Have you tried the dirname function of the path module: https://nodejs.org/api/path.html#path_path_dirname_p
path.dirname('/this/is/a/path/to/a/file.html')
// returns
'/this/is/a/path/to/a'
For plain JavaScript, this will work:
function getDirName(e)
{
if(e === null) return "https://stackoverflow.com/";
if(e.indexOf("https://stackoverflow.com/") !== -1)
{
e = e.split("https://stackoverflow.com/") //break the string into an array
e.pop() //remove its last element
e= e.join("https://stackoverflow.com/") //join the array back into a string
if(e === '')
return "https://stackoverflow.com/";
return e;
}
return "https://stackoverflow.com/";
}
var e="/this/is/a/path/to/a/file.html"
var e="file.html"
var e="/file.html"
getDirName(e)
You can get dirname with just with __dirname.
