string-vars-action

An action to replace variables in a given string.

It expects a string containing any number of placeholders, and then attempts to populate them from the currently available environment variables.

Inputs

instring

The input string containing the lowercase variable names, surrounded by curly braces. required

prefix

The prefix to use when inspecting the environment. Only environment variables starting with the prefix will be used when replacing the placeholders. optional

Outputs

outstring

The string after substituting the placeholders.

Example Usage

name: String Replace Test
on:
  push:
    branches: master
jobs:
  example:
    runs-on: ubuntu-latest
    steps:
        - name: 'With prefix'
          env:
              STRVAR_ONE: '1'
              STRVAR_TWO: '2'
              ONE: '3'
          uses: AndreasNel/string-vars-action@master
          with:
              prefix: 'STRVAR_'
              instring: '{ONE} {ONE} {TWO}'
        - name: 'Without prefix'
          env:
              ONE: '1'
              TWO: '2'
          uses: AndreasNel/string-vars-action@master
          with:
              instring: '{ONE} {ONE} {TWO}'

In both cases, the string 1 1 2 will be the output.