Introduce properties manager for easy implements other properties for…

…mats

pom.xml

@@ -126,6 +126,26 @@
     </dependency>
   </dependencies>
 
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <configuration>
+            <annotationProcessorPaths>
+              <path>
+                <groupId>org.eclipse.sisu</groupId>
+                <artifactId>org.eclipse.sisu.inject</artifactId>
+                <version>0.9.0.M2</version>
+              </path>
+            </annotationProcessorPaths>
+          </configuration>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+
   <profiles>
     <profile>
       <id>run-its</id>

src/it/read-project/invoker.properties

@@ -0,0 +1 @@
+invoker.goals = clean process-resources

src/it/read-project/main.properties

@@ -0,0 +1,6 @@
+
+# test properties for IT
+
+props1 = value1
+props2 = value2
+props3 = value3

src/it/read-project/main2.txt

@@ -0,0 +1,4 @@
+
+# test properties for IT
+
+props3 = value3

src/it/read-project/pom.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.codehaus.mojo.properties.it</groupId>
+  <artifactId>write-project</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+
+  <build>
+
+    <resources>
+      <resource>
+        <directory>src/main/resources</directory>
+        <filtering>true</filtering>
+      </resource>
+    </resources>
+
+    <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>properties-maven-plugin</artifactId>
+        <version>@project.version@</version>
+        <executions>
+          <execution>
+            <phase>generate-resources</phase>
+            <goals>
+              <goal>read-project-properties</goal>
+            </goals>
+            <configuration>
+              <files>
+                <file>main.properties</file>
+                <!-- default manager for properties should be used -->
+                <file>main2.txt</file>
+              </files>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

src/it/read-project/src/main/resources/test.txt

@@ -0,0 +1,5 @@
+Test resource using properties from external files
+
+props1 has value ${props1}
+props2 has value ${props2}
+props3 has value ${props3}

src/it/read-project/verify.groovy

@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+File testFile = new File( basedir, 'target/classes/test.txt' )
+assert testFile.exists()
+
+String content = testFile.getText()
+assert content.contains('props1 has value value1')
+assert content.contains('props2 has value value2')
+assert content.contains('props3 has value value3')
+
+File buildLog = new File( basedir, 'build.log' )
+assert buildLog.exists()
+assert buildLog.getText().contains("[WARNING] Unknown properties resource extension: 'txt' assume as: 'properties'")
+

src/main/java/org/codehaus/mojo/properties/AbstractPropertiesMojo.java

@@ -0,0 +1,44 @@
+package org.codehaus.mojo.properties;
+
+import java.util.List;
+import java.util.Locale;
+import java.util.Optional;
+
+import org.apache.maven.plugin.AbstractMojo;
+import org.codehaus.mojo.properties.managers.PropertiesManager;
+
+/**
+ * Abstract Mojo with Properties managers support.
+ */
+public abstract class AbstractPropertiesMojo extends AbstractMojo {
+
+    private final List<PropertiesManager> propertiesManagers;
+
+    protected AbstractPropertiesMojo(List<PropertiesManager> propertiesManagers) {
+        this.propertiesManagers = propertiesManagers;
+    }
+
+    protected PropertiesManager getPropertiesManager(String resourceExtension) {
+        getLog().debug("Available properties managers: " + propertiesManagers);
+
+        String resourceExtensionLowerCase = resourceExtension.toLowerCase(Locale.ROOT);
+        Optional<PropertiesManager> propertiesStore = propertiesManagers.stream()
+                .filter(manager -> manager.isExtensionSupport(resourceExtensionLowerCase))
+                .findFirst();
+
+        if (!propertiesStore.isPresent()) {
+            getLog().warn("Unknown properties resource extension: '" + resourceExtension + "' assume as: '"
+                    + PropertiesManager.DEFAULT_MANAGER_EXTENSION + "'");
+            return getDefaultPropertiesManager();
+        } else {
+            return propertiesStore.get();
+        }
+    }
+
+    private PropertiesManager getDefaultPropertiesManager() {
+        return propertiesManagers.stream()
+                .filter(manager -> manager.isExtensionSupport(PropertiesManager.DEFAULT_MANAGER_EXTENSION))
+                .findFirst()
+                .orElseThrow(() -> new RuntimeException("Default properties manager not exist"));
+    }
+}

src/main/java/org/codehaus/mojo/properties/AbstractWritePropertiesMojo.java

@@ -19,75 +19,56 @@
  * under the License.
  */
 
-import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.io.PrintWriter;
-import java.io.StringReader;
-import java.io.StringWriter;
-import java.util.ArrayList;
-import java.util.Collections;
+import java.nio.file.Files;
 import java.util.List;
 import java.util.Properties;
 
-import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.project.MavenProject;
+import org.codehaus.mojo.properties.managers.PropertiesManager;
+import org.codehaus.plexus.util.FileUtils;
 
 /**
  * @author <a href="mailto:zarars@gmail.com">Zarar Siddiqi</a>
  */
-public abstract class AbstractWritePropertiesMojo extends AbstractMojo {
+public abstract class AbstractWritePropertiesMojo extends AbstractPropertiesMojo {
 
     @Parameter(defaultValue = "${project}", required = true, readonly = true)
     private MavenProject project;
 
+    /**
+     * Output file for storing properties.
+     *
+     * @since 1.0.0
+     */
     @Parameter(required = true, property = "properties.outputFile")
     private File outputFile;
 
+    protected AbstractWritePropertiesMojo(List<PropertiesManager> propertiesManagers) {
+        super(propertiesManagers);
+    }
+
     /**
      * @param properties {@link Properties}
-     * @param file {@link File}
      * @throws MojoExecutionException {@link MojoExecutionException}
      */
-    protected void writeProperties(Properties properties, File file) throws MojoExecutionException {
+    protected void writeProperties(Properties properties) throws MojoExecutionException {
         try {
-            storeWithoutTimestamp(properties, file, "Properties");
+            PropertiesManager manager = getPropertiesManager(FileUtils.extension(outputFile.getName()));
+            manager.save(properties, Files.newOutputStream(outputFile.toPath()), "Properties");
         } catch (FileNotFoundException e) {
-            getLog().error("Could not create FileOutputStream: " + file);
+            getLog().error("Could not create FileOutputStream: " + outputFile);
             throw new MojoExecutionException(e.getMessage(), e);
         } catch (IOException e) {
-            getLog().error("Error writing properties: " + file);
+            getLog().error("Error writing properties: " + outputFile);
             throw new MojoExecutionException(e.getMessage(), e);
         }
     }
 
-    // https://github.com/apache/maven-archiver/blob/master/src/main/java/org/apache/maven/archiver/PomPropertiesUtil.java#L81
-    private void storeWithoutTimestamp(Properties properties, File outputFile, String comments) throws IOException {
-        try (PrintWriter pw = new PrintWriter(outputFile, "ISO-8859-1");
-                StringWriter sw = new StringWriter()) {
-            properties.store(sw, comments);
-            comments = '#' + comments;
-
-            List<String> lines = new ArrayList<>();
-            try (BufferedReader r = new BufferedReader(new StringReader(sw.toString()))) {
-                String line;
-                while ((line = r.readLine()) != null) {
-                    if (!line.startsWith("#") || line.equals(comments)) {
-                        lines.add(line);
-                    }
-                }
-            }
-
-            Collections.sort(lines);
-            for (String l : lines) {
-                pw.println(l);
-            }
-        }
-    }
-
     /**
      * @throws MojoExecutionException {@link MojoExecutionException}
      */
@@ -107,11 +88,4 @@ protected void validateOutputFile() throws MojoExecutionException {
     public MavenProject getProject() {
         return project;
     }
-
-    /**
-     * @return {@link #outputFile}
-     */
-    public File getOutputFile() {
-        return outputFile;
-    }
 }