replace all spaces in specific places using javascript

Question

I have a string like:

image.id."HashiCorp Terraform Team <[email protected]>" 
AND  image.label."some string"."some other string"

I want to replace all spaces with '___' just for the strings that are surrounded with quotes, so the final string will look like:

  image.id."HashiCorp___Terraform___Team___<[email protected]>" 
    AND  image.label."some___string"."some___other___string"

I've tried this:

text = text.replace(/"(\w+\s+)+/gi, function (a) {
                return a.replace(' ', _delimiter);
            });

But it only replaces the first space, so i get: HashiCorp___Terraform Team <[email protected]>. and some___other string

I'm very bad with regexp so I'm probably doing something wrong :(

Since your input looks like a programming language, here's an obligatory reminder that you cannot handle such languages with regexes alone and might be better off using a real tokenizer/parser. — georg
– georg, Commented Oct 11, 2018 at 11:43
@georg It's not a programming language, it's a free text string entered by a user that must follow some rules, but inside the quotes the user can put any value he wants, If you're concerned about security, the string is sanitized at the server. — Tomer
– Tomer, Commented Oct 11, 2018 at 11:49

Wiktor Stribiżew · Accepted Answer · 2018-10-11 11:28:38Z

3

You may use a /"[^"]+"/g regex to match substrings between two " chars and then replace whitespace chars inside a callback method:

var text = 'image.id."HashiCorp Terraform Team <[email protected]>" \nAND  image.label."some string"."some other string"';
var _delimiter = "___";
text = text.replace(/"[^"]+"/g, function (a) {
          return a.replace(/\s/g, _delimiter);
});
console.log(text);

The "[^"]+" pattern matches a ", then 1 or more chars other than " and then a closing ". The a variable holds the match value and a.replace(/\s/g, _delimiter) replaces each single whitespace char inside the match value with the "delimiter".

answered Oct 11, 2018 at 11:28

Wiktor Stribiżew

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