From 78bd55e30c199699db5258f8c422b3bee236a125 Mon Sep 17 00:00:00 2001
From: Jan Westerkamp <jan.westerkamp@ijug.eu>
Date: Mon, 3 Oct 2022 14:20:56 +0200
Subject: [PATCH] AsciiDoctor Diagram support added

---
 README.md |  2 +-
 pom.xml   | 66 +++++++++++++++++++++++++++++++++++++++++++++----------
 2 files changed, 56 insertions(+), 12 deletions(-)

diff --git a/README.md b/README.md
index c85bc88..9aa16f3 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Checkstyle validation. Always on by default, can be disabled with `-DskipChecks`
 
 - Automatically generate the Javadocs. Always on by default, can be skipped with `-DskipDocs`
 
-- Automatically generate `pdf` and `html` files from the `src/main/asciidoc` folder.
+- Automatically generate `pdf` and `html` files from the `src/main/asciidoc` folder, including AsciiDoctor Diagram support.
 
 - Apply the BND configuration if a `bnd.bnd` exists in the root project.
 
diff --git a/pom.xml b/pom.xml
index ab3212a..620e29b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -54,8 +54,14 @@
         <version.plugin.checkstyle>3.1.1</version.plugin.checkstyle>
         <version.plugin.rat>0.13</version.plugin.rat>
         <version.plugin.bnd>5.2.0</version.plugin.bnd>
-        <version.plugin.asciidoctor>2.1.0</version.plugin.asciidoctor>
-        <version.plugin.asciidoctor.pdf>1.5.3</version.plugin.asciidoctor.pdf>
+        
+        <!-- AsciiDoctor support versions -->
+        <asciidoctor.maven.plugin.version>2.2.2</asciidoctor.maven.plugin.version>
+        <asciidoctorj.version>2.5.6</asciidoctorj.version>
+        <asciidoctorj.diagram.version>2.2.3</asciidoctorj.diagram.version>
+        <asciidoctorj.pdf.version>2.3.0</asciidoctorj.pdf.version>
+        <jruby.version>9.3.8.0</jruby.version>
+        
         <version.plugin.copy.rename>1.0</version.plugin.copy.rename>
         <version.plugin.release>2.5.3</version.plugin.release>
         <version.plugin.gpg>1.6</version.plugin.gpg>
@@ -407,16 +413,48 @@
                 <plugin>
                     <groupId>org.asciidoctor</groupId>
                     <artifactId>asciidoctor-maven-plugin</artifactId>
-                    <version>${version.plugin.asciidoctor}</version>
+                    <version>${asciidoctor.maven.plugin.version}</version>
+                    <dependencies>
+                        <!-- Overwriting default versions provided by the plugin -->
+                        <dependency>
+                            <groupId>org.jruby</groupId>
+                            <artifactId>jruby</artifactId>
+                            <version>${jruby.version}</version>
+                        </dependency>
+                        <dependency>
+                            <groupId>org.asciidoctor</groupId>
+                            <artifactId>asciidoctorj</artifactId>
+                            <version>${asciidoctorj.version}</version>
+                        </dependency>
+                        <dependency>
+                            <groupId>org.asciidoctor</groupId>
+                            <artifactId>asciidoctorj-diagram</artifactId>
+                            <version>${asciidoctorj.diagram.version}</version>
+                        </dependency>
+                        <!-- Adding AsciiDoctorJ PDF support-->
+                        <dependency>
+                            <groupId>org.asciidoctor</groupId>
+                            <artifactId>asciidoctorj-pdf</artifactId>
+                            <version>${asciidoctorj.pdf.version}</version>
+                        </dependency>
+                    </dependencies>
                     <configuration>
                         <sourceDocumentName>${project.artifactId}.asciidoc</sourceDocumentName>
+                        <!-- Attributes common to all output formats -->
                         <attributes>
-                            <sourceHighlighter>coderay</sourceHighlighter>
                             <revnumber>${project.version}</revnumber>
                             <revremark>${release.revision}</revremark>
                             <!--suppress UnresolvedMavenProperty - Generated by build-helper-maven-plugin -->
                             <revdate>${release.timestamp}</revdate>
+                            <icons>font</icons>
+                            <idprefix/>
+                            <idseparator>-</idseparator>
+                            <!-- Images located to documents source -->
+                            <imagesdir>./image</imagesdir>
                         </attributes>
+                        <requires>
+                            <require>asciidoctor-diagram</require>
+                        </requires>
                     </configuration>
                     <executions>
                         <execution>
@@ -428,6 +466,14 @@
                             <configuration>
                                 <outputFile>${project.build.directory}/generated-docs/${project.build.finalName}.pdf</outputFile>
                                 <backend>pdf</backend>
+                                <doctype>book</doctype>
+                                <!-- Attributes specific to output formats -->
+                                <attributes>
+                                    <pagenums/>
+                                    <toc/>
+                                     <!-- The current verisons of the source highlighters use external static resources in HTML - so use it in PDF version only! -->
+                                    <source-highlighter>rouge</source-highlighter>
+                                </attributes>
                             </configuration>
                         </execution>
                         <execution>
@@ -439,16 +485,14 @@
                             <configuration>
                                 <outputFile>${project.build.directory}/generated-docs/${project.build.finalName}.html</outputFile>
                                 <backend>html5</backend>
+                                <!-- Attributes specific to output formats -->
+                                <attributes>
+                                    <toc>left</toc>
+                                    <sectanchors>true</sectanchors>
+                                </attributes> 
                             </configuration>
                         </execution>
                     </executions>
-                    <dependencies>
-                        <dependency>
-                            <groupId>org.asciidoctor</groupId>
-                            <artifactId>asciidoctorj-pdf</artifactId>
-                            <version>${version.plugin.asciidoctor.pdf}</version>
-                        </dependency>
-                    </dependencies>
                 </plugin>
 
                 <!-- Release -->