From 5e09f33af6ce1fae80c2eaa28d444516acbc7826 Mon Sep 17 00:00:00 2001
From: Evgenii Korolevskii <e-korolevskii@github.com>
Date: Wed, 7 Dec 2022 08:54:15 +0100
Subject: [PATCH] add java-version-file input

---
 src/constants.ts  |  1 +
 src/setup-java.ts | 10 +++++++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/constants.ts b/src/constants.ts
index ad8709e7..e4c8ad14 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,5 +1,6 @@
 export const MACOS_JAVA_CONTENT_POSTFIX = 'Contents/Home';
 export const INPUT_JAVA_VERSION = 'java-version';
+export const INPUT_JAVA_VERSION_FILE = 'java-version-file';
 export const INPUT_ARCHITECTURE = 'architecture';
 export const INPUT_JAVA_PACKAGE = 'java-package';
 export const INPUT_DISTRIBUTION = 'distribution';
diff --git a/src/setup-java.ts b/src/setup-java.ts
index a2e97ec3..0d00179d 100644
--- a/src/setup-java.ts
+++ b/src/setup-java.ts
@@ -13,6 +13,7 @@ async function run() {
   try {
     const versions = core.getMultilineInput(constants.INPUT_JAVA_VERSION);
     const distributionName = core.getInput(constants.INPUT_DISTRIBUTION, { required: true });
+    const versionFile = core.getInput(constants.INPUT_JAVA_VERSION_FILE);
     const architecture = core.getInput(constants.INPUT_ARCHITECTURE);
     const packageType = core.getInput(constants.INPUT_JAVA_PACKAGE);
     const jdkFile = core.getInput(constants.INPUT_JDK_FILE);
@@ -26,11 +27,14 @@ async function run() {
       toolchainIds = [];
     }
 
+    if (!versions.length && !versionFile) {
+      throw new Error("Java-version or java-version-file input expected");
+    }
+
     if (!versions.length) {
-      core.debug('JAVA_VERSION input is empty, looking for .java-version file');
-      const versionFileName = '.java-version';
+      core.debug('Java-version input is empty, looking for java-version-file input');
       const contents = fs
-        .readFileSync(versionFileName)
+        .readFileSync(versionFile)
         .toString()
         .trim();
       const semverRegExp = /(?<version>(?<=(^|\s|\-))(\d+\S*))(\s|$)/;