topic Re: Regex to pull file from path with JSL in Discussions

Regex to pull file from path with JSL

drblove — Wed, 02 Nov 2016 21:37:42 GMT

I am sure this is a straightforward answer to this question, but if I have the following:

full_path[i] = "C:\dir1\dir2\dir3\dir4\file.xlsx"

and I want to get just "file.xlsx" and the directory depth is variabile, i.e. maybe 2 directories maybe 5, how would I do it? In Perl I would split the string into an array by the \ and grab the last part of the array, but not sure how to do this in JSL. Any help would be appreciated!

Re: Regex to pull file from path with JSL

Melanie_J_Drake — Wed, 02 Nov 2016 21:54:22 GMT

You can use the JSL function Words() to separate a path into its component part, and then take just the last piece. Example:

full_path = {"C:\dir1\dir2\dir3\dir4\file.xlsx"}; i = 1; // setup

full_path[i] = "C:\dir1\dir2\dir3\dir4\file.xlsx";

filename = Words(full_path[i], "\"); // separate the path based on the backslash as a delimiter - returns a list

filename = filename[N Items(filename)]; // get the last string in the list

/*:

"file.xlsx"

Re: Regex to pull file from path with JSL

Jeff_Perkinson — Wed, 02 Nov 2016 21:56:32 GMT

Try the Words() function.

full_path = "C:\dir1\dir2\dir3\dir4\file.xlsx";

listofwords=words(full_path, "\");

filename=listofwords[nitems(listofwords)];

/*:

"file.xlsx"

Re: Regex to pull file from path with JSL

ms — Wed, 02 Nov 2016 22:03:54 GMT

Two examples of how it could be done:

full_path = "C:\dir1\dir2\dir3\dir4\file.xlsx";

//Regex (fails if filename contains non-word characters)
file1 = Regex(full_path, "[\w.]+$"); 
// Split string
file2 = Reverse(Words(full_path, "\"))[1];

Show(file1, file2);

Re: Regex to pull file from path with JSL

brady_brady — Wed, 02 Nov 2016 22:29:50 GMT

word ( -1, full_path[i], "\" )

You can use negative values, in the word() function, so -1 gives the last word, using the delimiter of choice.

Re: Regex to pull file from path with JSL

drblove — Wed, 09 Nov 2016 15:35:07 GMT

This is a great solution, one line. Thank you very much!