Merge commit 'a078564d53495e78687d2089e54569ae4106c3cd'

.github/workflows/gradle.yml

@@ -58,7 +58,7 @@ jobs:
         # create document
         ./gradlew docs
         # output unused images and test Gradle task
-        ./gradlew checkSyncImage
+        ./gradlew -q checkSyncImage
 
     - name: Build with Gradle (macOS)
       if: startsWith(matrix.os, 'macos')
@@ -68,7 +68,7 @@ jobs:
         # create document
         ./gradlew docs
         # output unused images and test Gradle task
-        ./gradlew checkSyncImage
+        ./gradlew -q checkSyncImage
 
     - name: Build with Gradle (Windows)
       if: startsWith(matrix.os, 'windows')
@@ -79,7 +79,7 @@ jobs:
         # create document
         .\gradlew docs
         # output unused images and test Gradle task
-        .\gradlew checkSyncImage
+        .\gradlew -q checkSyncImage
 
     - name: Check
       shell: bash
@@ -92,11 +92,23 @@ jobs:
         file docs/index.pdf | grep PDF
         file docs/index.html | grep HTML
 
-    - name: Output PDF information
+    - name: Output PDF information (Ubuntu)
       if: startsWith(matrix.os, 'ubuntu')
       run: |
         echo "# PDF information"
-        pdfinfo docs/index.pdf
+        ./gradlew -q checkPdfInfo
         echo "# URLs in document"
         pdfinfo -url docs/index.pdf | tail -n +2 | awk '{ print $3 }' | sort | uniq
-        echo "# Unused images"
+
+    - name: Output PDF information
+      if: startsWith(matrix.os, 'windows')
+      shell: pwsh
+      run: |
+        echo "# PDF information"
+        .\gradlew -q checkPdfInfo
+
+    - name: Output PDF information (macOS)
+      if: startsWith(matrix.os, 'macos')
+      run: |
+        echo "# PDF information"
+        ./gradlew -q checkPdfInfo

build.gradle

@@ -101,6 +101,20 @@ tasks.register('checkSyncImage', SyncImageTask) {
     imageExt = ['png', 'jpg', 'jpeg', 'svg']
 }
 
+/**
+ * PDF 文書のメタデータを確認するユーティリティタスク
+ *
+ * ./gradlew -q checkPdfInfo
+ *
+ * @see buildSrc/src/main/groovy/AsciidocTasks.groovy
+ */
+tasks.register('checkPdfInfo', PdfInfoTask) {
+    group 'documentation'
+    description 'Utility task to check PDF document metadata'
+    // 確認する PDF 文書
+    pdfFile = file('docs/index.pdf')
+}
+
 /**
  * Asciidoc 文書から HTML/PDF 文書を生成し配布可能な状態で docs 配下に出力するタスク
  *

buildSrc/build.gradle

@@ -10,4 +10,7 @@ dependencies {
     implementation gradleApi()
     implementation localGroovy()
     implementation 'org.asciidoctor:asciidoctorj:2.5.6'
+    implementation 'org.apache.tika:tika-core:2.9.0'
+    implementation 'org.apache.tika:tika-parsers-standard-package:2.9.0'
+    implementation 'org.apache.logging.log4j:log4j-core:2.20.0'
 }

buildSrc/src/main/groovy/PdfInfoTask.groovy

@@ -0,0 +1,39 @@
+import java.io.File
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.TaskAction
+import org.gradle.api.tasks.InputFile
+
+import org.apache.tika.metadata.Metadata
+import org.apache.tika.parser.ParseContext
+import org.apache.tika.parser.pdf.PDFParser
+import org.apache.tika.sax.BodyContentHandler
+
+/**
+ * PDF 文書のメタデータを確認するユーティリティタスク
+ *
+ */
+abstract class PdfInfoTask extends DefaultTask {
+    /**
+     * PDF 文書
+     */
+    @InputFile
+    File pdfFile
+
+    /**
+     * Gradle タスクエントリーポイント
+     */
+    @TaskAction
+    def checkPdfInfo() {
+        BodyContentHandler handler = new BodyContentHandler()
+        Metadata metadata = new Metadata()
+        FileInputStream input = new FileInputStream(pdfFile)
+        ParseContext context = new ParseContext()
+
+        PDFParser pdf = new PDFParser()
+        pdf.parse(input, handler, metadata, context)
+
+        metadata.names().sort().each { name ->
+            println "${name}: ${metadata.get(name)}"
+        }
+    }
+}

buildSrc/src/main/groovy/AsciidocTasks.groovy → buildSrc/src/main/groovy/SyncImageTask.groovy

@@ -124,3 +124,4 @@ abstract class SyncImageTask extends DefaultTask {
         }
     }
 }
+