Regex Find and Replace File Path in File Javascript

Question

My apologies if this question has been asked and answered, but after exhaustive research I cannot find it.

I have a fairly large text file in which are embedded file paths with file names along with text.

The Problem:

Some of these file paths are http and others are normative file paths.
The normal file paths can end with any file and extension.
The slash can be either / or \ in the file path.

What needs to get done: I need to find the file paths and replace them without touching the name of the actual file itself or the extension. For instance:

E:\sam\sam2\sam3\fafa.png needs to be replaced as foo\fafa.png or foo/fafa.png

However, I cannot touch nor replace any http file names..these must be excluded from the find and replace.

I have tried numerous possibilities in Regex (which I admit is a weakness in my coding skills), but nothing seems to work.

Any and all help would be appreciated and if you have time an explantion of the expression. Important note: Regex expression which works with Javascript/Node would be appreciated.

Mustofa Rizwan · Accepted Answer · 2017-03-15 07:46:54Z

1

You can try this:

([a-zA-z]:(?:[\\|\/][a-zA-Z\d-_. ]+)*)([\\|\/])([a-zA-Z\d-_]+\.[a-zA-z]+)

and replace by:

`foo$2$3`;

Demo

const regex = /([a-zA-z]:(?:[\\|\/][a-zA-Z\d-_. ]+)*)([\\|\/])([a-zA-Z\d-_]+\.[a-zA-z]+)/g;
const str = `E:\\sam\\sam2\\sam3\\fafa.png
bla bla bla http://blabla\\sam\\sam2\\sam3\\fafa.png kla kla kla
zzz E:\\sam\\billings\\cricketer.png adfaffdas
asdfasdfsdf
`;
const subst = `foo$2$3`;
const result = str.replace(regex, subst);
console.log(result);

edited Mar 15, 2017 at 7:46

answered Mar 15, 2017 at 7:38

Mustofa Rizwan

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