feat: install-only

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

.github/workflows/ci.yml

@@ -50,3 +50,29 @@ jobs:
           files: |
             ./bin/firefox-history-merger*
           args: -fq
+  install-only:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+        version:
+          - latest
+          - v4.0.2
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: UPX
+        uses: ./
+        with:
+          version: ${{ matrix.version }}
+          install-only: true
+      -
+        name: verify
+        run: >
+          which upx
+          upx --version

README.md

@@ -54,8 +54,9 @@ Following inputs can be used as `step.with` keys
 | Name          | Type    | Default   | Description                     |
 |---------------|---------|-----------|---------------------------------|
 | `version`       | String  | `latest`  | UPX version. Example: `v3.95`   |
-| `files`       | String  |           | Newline-delimited list of path globs for files to compress (**required**) |
+| `files`         | String  |           | Newline-delimited list of path globs for files to compress |
 | `args`          | String  |           | Arguments to pass to UPX        |
+| `install-only`  | String  | `false` | Install upx, but do not run it        |
 
 ## Limitation
 

action.yml

@@ -21,6 +21,11 @@ inputs:
     deprecationMessage: 'file is deprecated. Please use files input instead.'
     description: 'File to compress'
     required: false
+  install-only:
+    description: 'Just install upx'
+    default: 'false'
+    required: false
+
 
 runs:
   using: 'node16'

src/context.ts

@@ -6,13 +6,15 @@ export interface Inputs {
   version: string;
   files: string[];
   args: string;
+  installOnly: boolean;
 }
 
 export async function getInputs(): Promise<Inputs> {
   return {
     version: core.getInput('version') || 'latest',
     files: getInputList(core.getInput('files') || core.getInput('file'), true),
-    args: core.getInput('args')
+    args: core.getInput('args'),
+    installOnly: core.getBooleanInput('install-only')
   };
 }
 

src/main.ts

@@ -1,4 +1,5 @@
 import * as os from 'os';
+import * as path from 'path';
 import * as context from './context';
 import * as installer from './installer';
 import * as core from '@actions/core';
@@ -14,6 +15,13 @@ async function run(): Promise<void> {
     const inputs: context.Inputs = await context.getInputs();
     const upx = await installer.getUPX(inputs.version);
 
+    if (inputs.installOnly) {
+      const dir = path.dirname(upx);
+      core.addPath(dir);
+      core.debug(`Added ${dir} to PATH`);
+      return;
+    }
+
     const files: string[] = context.resolvePaths(inputs.files);
     if (files.length == 0) {
       core.warning(`No files were found. Please check the 'files' input.`);