Default values for configuration, especially VersionInfo

README.md

@@ -20,6 +20,12 @@ The full list of all the parameters is available [here](src/main/resources/MOJO.
 
 # Version Notes
 
+## Version notes 2.3.0 - 2022-12-30
+- provides default values for plugin configuration, especially for `<VersionInfo>`, see Issue [#98](../../issues/98)
+- adds a `disableVersionInfoDefaults` parameter to be able to disable provided defaults, see PR [#205](../../pull/205)
+- adds documentation notes regarding a new defaults, see [VERSIONINFO.md](src/main/resources/VERSIONINFO.md)
+- throwing exceptions with detailed description of default values formula, when cannot fulfill default values (no configuration data for formula), it helps plugin user with debugging what is wrong
+
 ## Version notes 2.2.0 - 2022-11-24
 - upgrades Launch4j to version 3.50 and adopts config to the bew requirements, see Issue [#199](../../issues/199)
   and PR [#200](../../pull/200) for more details what has to be changed 

pom.xml

@@ -22,7 +22,7 @@
     <groupId>com.akathist.maven.plugins.launch4j</groupId>
     <artifactId>launch4j-maven-plugin</artifactId>
     <packaging>maven-plugin</packaging>
-    <version>2.2.1-SNAPSHOT</version>
+    <version>2.3.0</version>
 
     <name>Maven Launch4j Plugin</name>
     <description>This plugin creates Windows executables from Java jar files using the Launch4j utility.</description>
@@ -119,12 +119,29 @@
             <artifactId>maven-artifact-transfer</artifactId>
             <version>0.13.1</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.12.0</version>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.13.2</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>pl.pragmatists</groupId>
+            <artifactId>JUnitParams</artifactId>
+            <version>1.1.1</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>4.11.0</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.apache.maven.plugin-testing</groupId>
             <artifactId>maven-plugin-testing-harness</artifactId>

src/main/java/com/akathist/maven/plugins/launch4j/Launch4jMojo.java

@@ -174,7 +174,7 @@ public class Launch4jMojo extends AbstractMojo {
      * like if java can't be found. If this is a console app and not a gui, then this value
      * is used to prefix any error messages, as in ${errTitle}: ${errorMessage}.
      */
-    @Parameter
+    @Parameter(defaultValue = "${project.name}")
     private String errTitle;
 
     /**
@@ -262,7 +262,7 @@ public class Launch4jMojo extends AbstractMojo {
      * Details about the classpath your application should have.
      * This is required if you are not wrapping a jar.
      */
-    @Parameter()
+    @Parameter
     private ClassPath classPath;
 
     /**
@@ -283,6 +283,12 @@ public class Launch4jMojo extends AbstractMojo {
     @Parameter
     private VersionInfo versionInfo;
 
+    /**
+     * If set to true, it will prevent filling out the VersionInfo params with default values.
+     */
+    @Parameter(defaultValue = "false")
+    private boolean disableVersionInfoDefaults;
+
     /**
      * Various messages you can display.
      */
@@ -340,6 +346,17 @@ private void doExecute() throws MojoExecutionException {
             return;
         }
 
+        if (!disableVersionInfoDefaults) {
+            try {
+                if(versionInfo == null) {
+                    versionInfo = new VersionInfo();
+                }
+                versionInfo.tryFillOutByDefaults(project, outfile);
+            } catch (RuntimeException exception) {
+                throw new MojoExecutionException("Cannot fill out VersionInfo by defaults", exception);
+            }
+        }
+
         final File workDir = setupBuildEnvironment();
         if (infile != null) {
             if (infile.exists()) {
@@ -834,6 +851,7 @@ public String toString() {
                 ", singleInstance=" + singleInstance +
                 ", splash=" + splash +
                 ", versionInfo=" + versionInfo +
+                ", disableVersionInfoDefaults=" + disableVersionInfoDefaults +
                 ", messages=" + messages +
                 ", manifest=" + manifest +
                 ", saveConfig=" + saveConfig +

src/main/java/com/akathist/maven/plugins/launch4j/VersionInfo.java

@@ -18,17 +18,22 @@
  */
 package com.akathist.maven.plugins.launch4j;
 
+import com.akathist.maven.plugins.launch4j.generators.CopyrightGenerator;
+import com.akathist.maven.plugins.launch4j.generators.Launch4jFileVersionGenerator;
 import net.sf.launch4j.config.LanguageID;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.maven.model.Organization;
 import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.project.MavenProject;
 
+import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
 /**
  * Information that appears in the Windows Explorer.
  */
 public class VersionInfo {
-
     private static final Map<String, LanguageID> LANGUAGE_TO_LANGUAGE_ID;
 
     static {
@@ -110,6 +115,27 @@ public class VersionInfo {
     @Parameter
     String trademarks;
 
+    public VersionInfo() {
+    }
+
+    public VersionInfo(String fileVersion, String txtFileVersion, String fileDescription,
+                       String copyright, String productVersion, String txtProductVersion,
+                       String productName, String companyName, String internalName,
+                       String originalFilename, String language, String trademarks) {
+        this.fileVersion = fileVersion;
+        this.txtFileVersion = txtFileVersion;
+        this.fileDescription = fileDescription;
+        this.copyright = copyright;
+        this.productVersion = productVersion;
+        this.txtProductVersion = txtProductVersion;
+        this.productName = productName;
+        this.companyName = companyName;
+        this.internalName = internalName;
+        this.originalFilename = originalFilename;
+        this.language = language;
+        this.trademarks = trademarks;
+    }
+
     net.sf.launch4j.config.VersionInfo toL4j() {
         net.sf.launch4j.config.VersionInfo ret = new net.sf.launch4j.config.VersionInfo();
 
@@ -137,6 +163,75 @@ private void setLanguage(net.sf.launch4j.config.VersionInfo ret) {
         ret.setLanguage(languageID);
     }
 
+    public void tryFillOutByDefaults(MavenProject project, File outfile) {
+        if (project == null) {
+            throw new IllegalArgumentException("'project' is required, but it is null.");
+        }
+        if (outfile == null) {
+            throw new IllegalArgumentException("'outfile' is required, but it is null.");
+        }
+
+        String version = project.getVersion();
+        Organization organization = project.getOrganization();
+
+        tryFillOutByDefaultVersionInL4jFormat(version);
+        tryFillOutCopyrightByDefaults(project.getInceptionYear(), organization);
+        tryFillOutOrganizationRelatedDefaults(organization);
+        tryFillOutSimpleValuesByDefaults(
+                version,
+                project.getName(),
+                project.getArtifactId(),
+                project.getDescription()
+        );
+
+        originalFilename = getDefaultWhenOriginalIsBlank(originalFilename, outfile.getName(), "originalFilename", "${project.version}");
+    }
+
+    private void tryFillOutByDefaultVersionInL4jFormat(String version) {
+        final String defaultFileVersion = Launch4jFileVersionGenerator.generate(version);
+        fileVersion = getDefaultWhenOriginalIsBlank(fileVersion, defaultFileVersion, "fileVersion", "${project.version}");
+        productVersion = getDefaultWhenOriginalIsBlank(productVersion, defaultFileVersion, "productVersion", "${project.version}");
+    }
+
+    private void tryFillOutCopyrightByDefaults(String inceptionYear, Organization organization) {
+        final String defaultCopyright = CopyrightGenerator.generate(inceptionYear, organization);
+        copyright = getDefaultWhenOriginalIsBlank(copyright, defaultCopyright, "copyright", "${project.inceptionYear},${project.organization.name}");
+    }
+
+    private void tryFillOutOrganizationRelatedDefaults(Organization organization) {
+        if (organization != null) {
+            companyName = getDefaultWhenOriginalIsBlank(companyName, organization.getName(), "companyName", "${project.organization.name}");
+            trademarks = getDefaultWhenOriginalIsBlank(trademarks, organization.getName(), "trademarks", "${project.organization.name}");
+        }
+    }
+
+    private void tryFillOutSimpleValuesByDefaults(String version,
+                                                  String name,
+                                                  String artifactId,
+                                                  String description) {
+        txtFileVersion = getDefaultWhenOriginalIsBlank(txtFileVersion, version, "txtFileVersion", "${project.version}");
+        txtProductVersion = getDefaultWhenOriginalIsBlank(txtProductVersion, version, "txtProductVersion", "${project.version}");
+        productName = getDefaultWhenOriginalIsBlank(productName, name, "productName", "${project.name}");
+        internalName = getDefaultWhenOriginalIsBlank(internalName, artifactId, "internalName", "${project.artifactId}");
+        fileDescription = getDefaultWhenOriginalIsBlank(fileDescription, description, "fileDescription", "${project.description}");
+    }
+
+    private String getDefaultWhenOriginalIsBlank(final String originalValue,
+                                                 final String defaultValue,
+                                                 final String originalParameterName,
+                                                 final String defaultValueFormulaParams) {
+        if (StringUtils.isBlank(originalValue)) {
+            if(StringUtils.isNotBlank(defaultValue)) {
+                return defaultValue;
+            }
+
+            throw new IllegalStateException("Please fill the missing configuration values. " +
+                    "Error when trying to fulfill default value for VersionInfo parameter:'" + originalParameterName + "' with formula params:'" + defaultValueFormulaParams + "'.");
+        }
+
+        return originalValue;
+    }
+
     @Override
     public String toString() {
         return "VersionInfo{" +

src/main/java/com/akathist/maven/plugins/launch4j/generators/CopyrightGenerator.java

@@ -0,0 +1,37 @@
+package com.akathist.maven.plugins.launch4j.generators;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.maven.model.Organization;
+
+import java.time.LocalDate;
+
+public class CopyrightGenerator {
+    /**
+     * Parameters should be taken from MavenProject properties:
+     * @param projectInceptionYear as ${project.inceptionYear}
+     * @param projectOrganization as ${project.organization}
+     */
+    public static String generate(String projectInceptionYear, Organization projectOrganization) {
+        String inceptionYear = generateInceptionYear(projectInceptionYear);
+        int buildYear = LocalDate.now().getYear();
+        String organizationName = generateOrganizationName(projectOrganization);
+
+        return String.format("Copyright © %s%d%s. All rights reserved.", inceptionYear, buildYear, organizationName);
+    }
+
+    private static String generateInceptionYear(String projectInceptionYear) {
+        if(StringUtils.isNotBlank(projectInceptionYear)) {
+            return projectInceptionYear + "-";
+        }
+
+        return "";
+    }
+
+    private static String generateOrganizationName(Organization projectOrganization) {
+        if(projectOrganization != null && StringUtils.isNotBlank(projectOrganization.getName())) {
+            return " " + projectOrganization.getName();
+        }
+
+        return "";
+    }
+}

src/main/java/com/akathist/maven/plugins/launch4j/generators/Launch4jFileVersionGenerator.java

@@ -0,0 +1,69 @@
+package com.akathist.maven.plugins.launch4j.generators;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+public class Launch4jFileVersionGenerator {
+    private static final int REQUIRED_NESTED_VERSION_LEVELS = 4;
+    private static final String SIMPLE_PROJECT_VERSION_REGEX = "^((\\d(\\.)?)*\\d+)(-\\w+)?$";
+    private static final Pattern simpleProjectVersionPattern = Pattern.compile(
+            SIMPLE_PROJECT_VERSION_REGEX, Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE
+    );
+
+    /**
+     * Converts projectVersion into a format "x.x.x.x" ('x' as a number), which is required by Launch4j.
+     *
+     * For shorter versions like "x.x.x" it will append zeros (to the 4th level) at the end like "x.x.x.0".
+     * Every text flag like "-SNAPSHOT" or "-alpha" will be cut off.
+     * Too many nested numbers (more than 4 levels) will be cut off as well: "1.2.3.4.5.6" -> "1.2.3.4".
+     *
+     * Param should be taken from MavenProject property:
+     * @param projectVersion as ${project.version}
+     */
+    public static String generate(String projectVersion) {
+        if(projectVersion == null) {
+            return null;
+        }
+        if(!simpleProjectVersionPattern.matcher(projectVersion).matches()) {
+            throw new IllegalArgumentException("'project.version' is in invalid format. Regex pattern: " + SIMPLE_PROJECT_VERSION_REGEX);
+        }
+
+        String versionLevels = removeTextFlags(projectVersion);
+        String limitedVersionLevels = cutOffTooManyNestedLevels(versionLevels);
+
+        return appendMissingNestedLevelsByZeros(limitedVersionLevels);
+    }
+
+    private static String removeTextFlags(String version) {
+        if(version.contains("-")) {
+            String[] parts = version.split("-");
+            return parts[0];
+        }
+
+        return version;
+    }
+
+    private static String cutOffTooManyNestedLevels(String versionLevels) {
+        String[] levels = versionLevels.split("\\.");
+
+        if(levels.length > REQUIRED_NESTED_VERSION_LEVELS) {
+            List<String> limitedLevels = Arrays.asList(levels)
+                    .subList(0, REQUIRED_NESTED_VERSION_LEVELS);
+            return String.join(".", limitedLevels);
+        }
+
+        return versionLevels;
+    }
+
+    private static String appendMissingNestedLevelsByZeros(String versionLevels) {
+        String[] levels = versionLevels.split("\\.");
+
+        StringBuilder filledLevels = new StringBuilder(versionLevels);
+        for (int i = levels.length; i < REQUIRED_NESTED_VERSION_LEVELS; i++) {
+            filledLevels.append(".0");
+        }
+
+        return filledLevels.toString();
+    }
+}