Added possibility to configure the path where the java version is read from

Author: Wolf2323

README.md

@@ -63,6 +63,15 @@ So, assuming the following usage:
         id: jve
 ```
 
+or if you have the java version in another property like the release property:
+
+```yaml
+      - uses: joshlong/java-version-export-github-action@v17
+        id: jve
+        with:
+          maven-expression: 'maven.compiler.release'
+```
+
 You can use the exported environment variable:
 
 ```

action.yml

@@ -1,6 +1,12 @@
 name: "java-version-export-github-action"
 description: "Exports the version of Java specified in pom.xml for use in configuring the version of Java to be used in the github action job"
 
+inputs:
+  maven-expression:
+    description: "The Maven expression to evaluate for the java version"
+    required: false
+    default: "maven.compiler.target"
+
 runs:
   using: "node16"
   main: "dist/index.js"

index.js

@@ -32,7 +32,6 @@ function cmd(cmd, args, stdoutListener) {
 }
 
 try {
-
     const maven = fs.existsSync('pom.xml')
     const gradleGroovy = fs.existsSync('build.gradle')
     const gradleKotlin = fs.existsSync('build.gradle.kts')
@@ -41,16 +40,16 @@ try {
     console.log(gradleGroovy)
     console.log(gradleKotlin)
 
-    if (maven) { // maven build
+    if (maven) {
+        const mavenExpression = core.getInput('maven-expression');
         cmd(
             "mvn",
             [
                 "help:evaluate",
                 "-q",
                 "-DforceStdout",
-                "-Dexpression=maven.compiler.target",
+                `-Dexpression=${mavenExpression}`,
             ],
-            // ["help:evaluate", "-q", "-DforceStdout", "-Dexpression=java.version"],
             (outputBuffer) => {
                 const output = outputBuffer.toString();
                 console.log(output);
@@ -64,23 +63,19 @@ try {
                 });
             }
         );
-    }  //
-    else {
+    } else {
         if (gradleGroovy || gradleKotlin) {
             cmd("./gradlew", [ ':properties','--property','sourceCompatibility' ], outputBuffer => {
                 const buff = outputBuffer.toString();
-                if (buff.indexOf ('sourceCompatibility')!=-1) {
-                  console.log ('sourceCompatibility: ' + buff)
-                }
-                else {
-                   console.log ('nope!')
+                if (buff.indexOf('sourceCompatibility') != -1) {
+                    console.log('sourceCompatibility: ' + buff)
+                } else {
+                    console.log('nope!')
                 }
-                
-                
             });
         }
     }
 } catch (error) {
     core.setFailed(error.message);
-}  
+}