CODEWITHSUNDEEP
groovy
Shahar Hamuzim Rajuan
Shahar Hamuzim Rajuan

Reputation: 6129

Groovy replace everything after character

I need to replace all content after a specific character in groovy with the value of a parameter,

my string is :

env.APP_VERSION="1.9"

And I would like to replace everything after the = sign with the value of a certain parameter let's call it $PARAM.

I was able to trim everything after the = sign,

but not replace it...

result = result.substring(0, result.indexOf('APP_VERSION='));

any help would be appreciated.

Upvotes: 0

Views: 2130

Answers (2)

Valdi_Bo
Valdi_Bo

Reputation: 30971

One of possible solutions is, indeed, to use regex. It should include:

  • (?<==) - A positive lookbehind for =.
  • .* - Match all chars (up to the end).

So the script can look like below:

src = 'env.APP_VERSION="1.9"'
PARAM = '"xyz"'
res = src.replaceFirst(/(?<==).*/, PARAM)

Another solution is to split the string on = and "mount" the result string from:

  • The first string from split result.
  • = char.
  • Your replacement string.

This time the processing part of the script should be:

spl = src.split('=')
res = spl[0] + '=' + PARAM

Upvotes: 1

injecteer
injecteer

Reputation: 20699

Without knowing about your original intentions you have 2 options:

1) Do not reinvent the wheel and use GString magic:

String ver = '1.9'
String result = "env.APP_VERSION=\"$ver\""

2) use some regex:

 result = result.replaceFirst( /APP_VERSION="[^"]+"/, 'APP_VERSION="something"' )

Upvotes: 0

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