From e1a751b5d3f29a82de84c70000ff3bf470374565 Mon Sep 17 00:00:00 2001
From: AUGMELO <augusto.melo@mercedes-benz.io>
Date: Sun, 8 Jan 2023 19:25:29 +0000
Subject: [PATCH] feat: added support to pom.xml

---
 .github/workflows/e2e-versions.yml | 45 +++++++++++++++
 src/setup-java.ts                  |  2 +-
 src/util.ts                        | 91 ++++++++++++++++++++++++++++--
 3 files changed, 133 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/e2e-versions.yml b/.github/workflows/e2e-versions.yml
index 47250cc..7ca6727 100644
--- a/.github/workflows/e2e-versions.yml
+++ b/.github/workflows/e2e-versions.yml
@@ -337,3 +337,48 @@ jobs:
       - name: Verify Java
         run: bash __tests__/verify-java.sh "11.0.2" "${{ steps.setup-java.outputs.path }}"
         shell: bash
+
+  setup-java-version-from-pom-spring-boot-specification:
+    name: ${{ matrix.distribution }} version from file 'openjdk64-11.0.2' - ${{ 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 .java-version file
+        shell: bash
+        run: |
+          echo "<?xml version="1.0" encoding="UTF-8"?>" > pom.xml
+          echo "<project>" >> pom.xml
+          echo "	<modelVersion>4.0.0</modelVersion>" >> pom.xml
+          echo "  <groupId>com.test</groupId>" >> pom.xml
+          echo "  <artifactId>Test</artifactId>" >> pom.xml
+          echo "  <version>0.0.1-SNAPSHOT</version>" >> pom.xml
+          echo "  <name>Test</name>" >> pom.xml
+          echo "  <properties>" >> pom.xml
+          echo "    <java.version>11</java.version>" >> pom.xml
+          echo "  </properties>" >> pom.xml
+          echo "  <dependencies>" >> pom.xml
+          echo "  </dependencies>" >> pom.xml
+          echo "  <build>" >> pom.xml
+          echo "    <plugins>" >> pom.xml
+          echo "      <plugin>" >> pom.xml
+          echo "        <groupId>org.springframework.boot</groupId>" >> pom.xml
+          echo "        <artifactId>spring-boot-maven-plugin</artifactId>" >> pom.xml
+          echo "      </plugin>" >> pom.xml
+          echo "    </plugins>" >> pom.xml
+          echo "  </build>" >> pom.xml
+          echo "</project>" >> pom.xml
+      - name: setup-java
+        uses: ./
+        id: setup-java
+        with:
+          distribution: ${{ matrix.distribution }}
+          java-version-file: 'pom.xml'
+      - name: Verify Java
+        run: bash __tests__/verify-java.sh "11.0.2" "${{ steps.setup-java.outputs.path }}"
+        shell: bash
diff --git a/src/setup-java.ts b/src/setup-java.ts
index 1d6dc15..df90e6e 100644
--- a/src/setup-java.ts
+++ b/src/setup-java.ts
@@ -47,7 +47,7 @@ async function run() {
         .toString()
         .trim();
 
-      const version = getVersionFromFileContent(content, distributionName);
+      const version = getVersionFromFileContent(versionFile, content, distributionName);
       core.debug(`Parsed version from file '${version}'`);
 
       if (!version) {
diff --git a/src/util.ts b/src/util.ts
index d3a09f6..967406c 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -101,13 +101,19 @@ export function isCacheFeatureAvailable(): boolean {
 }
 
 export function getVersionFromFileContent(
+  fileName: string,
   content: string,
   distributionName: string
 ): string | null {
-  const javaVersionRegExp = /(?<version>(?<=(^|\s|\-))(\d+\S*))(\s|$)/;
-  const fileContent = content.match(javaVersionRegExp)?.groups?.version
-    ? (content.match(javaVersionRegExp)?.groups?.version as string)
-    : '';
+  let fileContent = null;
+  if (fileName.includes('.java-version')) {
+    fileContent = parseJavaVersionFile(content)
+  } else if (fileName.includes('pom.xml')){
+    fileContent = parsePomXmlFile(content)
+  } else {
+    throw new Error(`File ${fileName} not supported, files supported: '.java-version' and 'pom.xml'`)
+  }
+
   if (!fileContent) {
     return null;
   }
@@ -133,7 +139,84 @@ export function getVersionFromFileContent(
   return version.toString();
 }
 
+function parseJavaVersionFile(content: string): string | null {
+  const javaVersionRegExp = /(?<version>(?<=(^|\s|\-))(\d+\S*))(\s|$)/;
+  const fileContent = content.match(javaVersionRegExp)?.groups?.version
+    ? (content.match(javaVersionRegExp)?.groups?.version as string)
+    : '';
+  if (!fileContent) {
+    return null;
+  }
+
+  return fileContent
+}
+
+function parsePomXmlFile(content: string): string | null {
+  const parser = new DOMParser();
+  const xmlDoc = parser.parseFromString(content, "text/xml");
+  const versionDefinitionTypes = [
+    getByMavenCompilerSource,
+    getByMavenCompilerRelease,
+    getBySpringBootSpecification,
+  ]
+  const versionFound = versionDefinitionTypes.filter(function(definitionType){
+    const version = definitionType(xmlDoc)
+
+    return version !== null
+  })
+
+
+  return versionFound?.at(0)?.toString() ?? null;
+}
+
+function getByMavenCompilerSource(xmlDoc: Document): string | null {
+  const possibleTags = [
+    "maven.compiler.source",
+    "source"
+  ]
+
+  const tagFound = possibleTags.filter(function(tag) {
+    const version = getVersionByTagName(xmlDoc, tag)
+
+    return version !== null
+  })
+
+  return tagFound?.at(0)?.toString() ?? null
+
+}
+
+function getByMavenCompilerRelease(xmlDoc: Document): string | null {
+  const possibleTags = [
+    "maven.compiler.release",
+    "release"
+  ]
+
+  const tagFound = possibleTags.filter(function(tag) {
+    const version = getVersionByTagName(xmlDoc, tag)
+
+    return version !== null
+  })
+
+  return tagFound?.at(0)?.toString() ?? null
+}
+
+function getBySpringBootSpecification(xmlDoc: Document): string | null {
+  return getVersionByTagName(xmlDoc, "java.version")
+}
+
+function getVersionByTagName(xmlDoc: Document, tagName: string): string | null {
+  const element = xmlDoc.getElementsByTagName(tagName)
+
+  if (element.length < 1) {
+    return null
+  }
+
+  return element[0].textContent
+
+}
+
 // 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;
 }
+