Log output also to matchOutput output variable

README.md

@@ -1,18 +1,17 @@
 # gh-action-log-parser
 
-
 ## update patterns file
 
 To update patterns you need npm and nodejs installed. Check `.tool-versions` for version.
 
 
-* Edit files in `patterns` directory.
-* Update Changelog.md.
-* Create package `npm run package`.
-* Commit all changed files.
-* Create 2 tags.
-    * Major, minor, patch  e.g. 0.1.0.
-    * Major, minor e.g. 0.1.
-* Push everything.
+- Edit files in `patterns` directory.
+- Update Changelog.md.
+- Create package `npm run package`.
+- Commit all changed files.
+- Create 2 tags.
+    - Major, minor, patch  e.g. 0.1.0.
+    - Major, minor e.g. 0.1.
+- Push everything.
 
 We use 2 tags to avoid updating workflows for every change. For patches and small tweaks we bump patch version.

action.yml

@@ -13,6 +13,13 @@ inputs:
     description: 'Type of log to check (e.g., node, python, java)'
     required: false
     default: 'unity'
+  matchOutputMaxChars:
+    description: 'Max size of matchOutput output variable'
+    required: false
+    default: '500'
+outputs:
+  matchOutput:
+    description: 'Print matched output also to variable'
 
 runs:
   using: node20

src/main.js

@@ -2,7 +2,8 @@ const core = require('@actions/core');
 const fs = require('fs');
 const readline = require('readline');
 
-// const nodePatterns = require('./patterns/unity.js')
+// store messages for output matchOutput
+let matchOutput = "";
 
 function loadPatterns(logType) {
   try {
@@ -96,17 +97,25 @@ function printMatch(match) {
     message += `\nContext Lines:\n${match.context.join("\n")}`;
   }
   console.log(message);
+  matchOutput += message + "\n";
 }
 
 async function run() {
   try {
     const filePath = core.getInput('filePath');
     const logType = core.getInput('logType');
+    const matchOutputMaxCharsInput = core.getInput('matchOutputMaxChars');
+    const matchOutputMaxChars = parseInt(matchOutputMaxCharsInput, 10);
+
+    if (isNaN(matchOutputMaxChars)) {
+      core.setFailed('Input "matchOutputMaxChars" is not a valid integer.');
+    }
 
     const patterns = await loadPatterns(logType);
 
     if (patterns && patterns.length > 0) {
       await checkFile(filePath, patterns);
+      core.setOutput("matchOutput", JSON.stringify(matchOutput.slice(0, matchOutputMaxChars) + "\n___Rest is truncated due to \"" + matchOutputMaxChars + "\" chars limit___\n"));
     }
 
   } catch (error) {