feat: added support to build.gradle

.github/workflows/e2e-versions.yml

@@ -469,7 +469,6 @@ jobs:
       - name: Verify Java
         run: bash __tests__/verify-java.sh "8" "${{ steps.setup-java.outputs.path }}"
         shell: bash
-
   setup-java-version-from-pom-maven-compiler-plugin-configuration:
     name: ${{ matrix.distribution }} version from pom.xml - ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -513,3 +512,86 @@ jobs:
       - name: Verify Java
         run: bash __tests__/verify-java.sh "8" "${{ steps.setup-java.outputs.path }}"
         shell: bash
+  setup-java-version-from-build-gradle-java-library-plugin-specification:
+    name: ${{ matrix.distribution }} version from build.gradle - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        distribution: ['adopt', 'zulu', 'liberica']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Create build.gradle file
+        shell: bash
+        run: |
+          echo "java {" > build.gradle
+          echo "    toolchain {" >> build.gradle
+          echo "        languageVersion.set(JavaLanguageVersion.of(11))" >> build.gradle
+          echo "    }" >> build.gradle
+          echo "}" >> build.gradle
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: ${{ matrix.distribution }}
+          java-version-file: 'build.gradle'
+      - name: Verify Java
+        run: bash __tests__/verify-java.sh "11" "${{ steps.setup-java.outputs.path }}"
+        shell: bash
+
+  setup-java-version-from-build-gradle-java-plugin-source-compatibility-specification:
+    name: ${{ matrix.distribution }} version from build.gradle - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        distribution: ['adopt', 'zulu', 'liberica']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Create pom.xml file
+        shell: bash
+        run: |
+          echo "java {" > build.gradle
+          echo "    sourceCompatibility = JavaVersion.VERSION_1_8" >> build.gradle
+          echo "    targetCompatibility = JavaVersion.VERSION_1_8" >> build.gradle
+          echo "}" >> build.gradle
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: ${{ matrix.distribution }}
+          java-version-file: 'build.gradle'
+      - name: Verify Java
+        run: bash __tests__/verify-java.sh "8" "${{ steps.setup-java.outputs.path }}"
+        shell: bash
+
+  setup-java-version-from-build-gradle-java-plugin-target-compatibility-specification:
+    name: ${{ matrix.distribution }} version from build.gradle - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        distribution: ['adopt', 'zulu', 'liberica']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Create pom.xml file
+        shell: bash
+        run: |
+          echo "java {" > build.gradle
+          echo "    targetCompatibility = JavaVersion.VERSION_21" >> build.gradle
+          echo "}" >> build.gradle
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: ${{ matrix.distribution }}
+          java-version-file: 'build.gradle'
+      - name: Verify Java
+        run: bash __tests__/verify-java.sh "21" "${{ steps.setup-java.outputs.path }}"
+        shell: bash

dist/cleanup/index.js

@@ -103801,6 +103801,9 @@ function getVersionFromFile(fileName, content, distributionName) {
     else if (fileName.includes('pom.xml')) {
         parsedVersion = parsePomXmlFile(content);
     }
+    else if (fileName.includes('build.gradle')) {
+        parsedVersion = parseBuildGradleFile(content);
+    }
     else {
         throw new Error(`File ${fileName} not supported, files supported: '.java-version' and 'pom.xml'`);
     }
@@ -103909,6 +103912,42 @@ function getByMavenCompilerPluginConfig(xmlDoc) {
     });
     return (_a = source === null || source === void 0 ? void 0 : source.first().toString()) !== null && _a !== void 0 ? _a : null;
 }
+function parseBuildGradleFile(buildGradle) {
+    const versionDefinitionTypes = [getByJavaLibraryPlugin, getByJavaPlugin];
+    for (const definitionType of versionDefinitionTypes) {
+        const version = definitionType(buildGradle);
+        if (version !== null) {
+            return version;
+        }
+    }
+    return null;
+}
+function getByJavaLibraryPlugin(buildGradle) {
+    return getVersionByRegex(buildGradle, 'JavaLanguageVersion.of((d+))');
+}
+function getByJavaPlugin(buildGradle) {
+    const possibleRegex = [
+        'sourceCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)',
+        'targetCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)'
+    ];
+    for (var regex of possibleRegex) {
+        const version = getVersionByRegex(buildGradle, regex);
+        if (version !== null) {
+            return version;
+        }
+    }
+    return null;
+}
+function getVersionByRegex(content, regex) {
+    const match = content.match(new RegExp(regex));
+    if (match) {
+        core.debug(`Found java version: '${match[1]}' using regex: '${regex}'`);
+        return match[1];
+    }
+    else {
+        return null;
+    }
+}
 // By convention, action expects version 8 in the format `8.*` instead of `1.8`
 function avoidOldNotation(content) {
     return content.startsWith('1.') ? content.substring(2) : content;

dist/setup/index.js

@@ -105458,6 +105458,9 @@ function getVersionFromFile(fileName, content, distributionName) {
     else if (fileName.includes('pom.xml')) {
         parsedVersion = parsePomXmlFile(content);
     }
+    else if (fileName.includes('build.gradle')) {
+        parsedVersion = parseBuildGradleFile(content);
+    }
     else {
         throw new Error(`File ${fileName} not supported, files supported: '.java-version' and 'pom.xml'`);
     }
@@ -105566,6 +105569,42 @@ function getByMavenCompilerPluginConfig(xmlDoc) {
     });
     return (_a = source === null || source === void 0 ? void 0 : source.first().toString()) !== null && _a !== void 0 ? _a : null;
 }
+function parseBuildGradleFile(buildGradle) {
+    const versionDefinitionTypes = [getByJavaLibraryPlugin, getByJavaPlugin];
+    for (const definitionType of versionDefinitionTypes) {
+        const version = definitionType(buildGradle);
+        if (version !== null) {
+            return version;
+        }
+    }
+    return null;
+}
+function getByJavaLibraryPlugin(buildGradle) {
+    return getVersionByRegex(buildGradle, 'JavaLanguageVersion.of((d+))');
+}
+function getByJavaPlugin(buildGradle) {
+    const possibleRegex = [
+        'sourceCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)',
+        'targetCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)'
+    ];
+    for (var regex of possibleRegex) {
+        const version = getVersionByRegex(buildGradle, regex);
+        if (version !== null) {
+            return version;
+        }
+    }
+    return null;
+}
+function getVersionByRegex(content, regex) {
+    const match = content.match(new RegExp(regex));
+    if (match) {
+        core.debug(`Found java version: '${match[1]}' using regex: '${regex}'`);
+        return match[1];
+    }
+    else {
+        return null;
+    }
+}
 // By convention, action expects version 8 in the format `8.*` instead of `1.8`
 function avoidOldNotation(content) {
     return content.startsWith('1.') ? content.substring(2) : content;

docs/advanced-usage.md

@@ -485,4 +485,8 @@ It is able to parse the following files as `java-version-file`:
   - Maven compiler plugin
     - Setting the [source](https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html).
     - Setting the [release](https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-release.html).
-    - **Note:** Since we are using a RegExp to find the java version, it doesn't grab the values from the tags `source` or `release` on `maven-compiler-plugin`.
+- `build.gradle` 
+  - Java library plugin: uses what is defined by `JavaLanguageVersion` example: `JavaLanguageVersion.of(11)`
+  - Java plugin [docs](https://docs.gradle.org/current/userguide/java_plugin.html#toolchain_and_compatibility):
+    - sourceCompatibility
+    - targetCompatibility

src/util.ts

@@ -9,6 +9,7 @@ import * as tc from '@actions/tool-cache';
 import { INPUT_JOB_STATUS, DISTRIBUTIONS_ONLY_MAJOR_VERSION } from './constants';
 import { create } from 'xmlbuilder2';
 import { XMLBuilder } from 'xmlbuilder2/lib/interfaces';
+import { on } from 'events';
 
 export function getTempDir() {
   let tempDirectory = process.env['RUNNER_TEMP'] || os.tmpdir();
@@ -114,6 +115,8 @@ export function getVersionFromFile(
     parsedVersion = parseJavaVersionFile(content);
   } else if (fileName.includes('pom.xml')) {
     parsedVersion = parsePomXmlFile(content);
+  } else if (fileName.includes('build.gradle')) {
+    parsedVersion = parseBuildGradleFile(content);
   } else {
     throw new Error(
       `File ${fileName} not supported, files supported: '.java-version' and 'pom.xml'`
@@ -249,6 +252,52 @@ function getByMavenCompilerPluginConfig(xmlDoc: XMLBuilder): string | null {
   return source?.first().toString() ?? null;
 }
 
+function parseBuildGradleFile(buildGradle: string): any {
+  const versionDefinitionTypes = [getByJavaLibraryPlugin, getByJavaPlugin];
+
+  for (const definitionType of versionDefinitionTypes) {
+    const version = definitionType(buildGradle);
+
+    if (version !== null) {
+      return version;
+    }
+  }
+
+  return null;
+}
+
+function getByJavaLibraryPlugin(buildGradle: string) {
+  return getVersionByRegex(buildGradle, 'JavaLanguageVersion.of((d+))');
+}
+
+function getByJavaPlugin(buildGradle: string) {
+  const possibleRegex = [
+    'sourceCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)',
+    'targetCompatibilitys?=s?JavaVersion.VERSION_(?:1_)?(d+)'
+  ];
+
+  for (var regex of possibleRegex) {
+    const version = getVersionByRegex(buildGradle, regex);
+
+    if (version !== null) {
+      return version;
+    }
+  }
+
+  return null;
+}
+
+function getVersionByRegex(content: string, regex: string): string | null {
+  const match = content.match(new RegExp(regex));
+
+  if (match) {
+    core.debug(`Found java version: '${match[1]}' using regex: '${regex}'`);
+    return match[1];
+  } else {
+    return null;
+  }
+}
+
 // By convention, action expects version 8 in the format `8.*` instead of `1.8`
 function avoidOldNotation(content: string): string {
   return content.startsWith('1.') ? content.substring(2) : content;