Implemented OpenHtmlToPdfHtmlToPdfConverter to convert HTML to PDF

gradle.properties

@@ -23,6 +23,9 @@ pdfboxTextExtractor=0.6.1
 
 angusMailVersion=2.0.3
 
+openHtmlToPdfVersion=1.1.22
+jsoupVersion=1.18.1
+
 klfVersion=1.6.2
 lokiLogAppenderVersion=0.5.5
 # only used for tests

invoice-creator/build.gradle.kts

@@ -0,0 +1,49 @@
+plugins {
+    kotlin("jvm")
+}
+
+
+kotlin {
+    jvmToolchain(11)
+}
+
+java {
+    withSourcesJar()
+}
+
+
+val openHtmlToPdfVersion: String by project
+
+val jsoupVersion: String by project
+
+val klfVersion: String by project
+
+val assertKVersion: String by project
+val logbackVersion: String by project
+
+dependencies {
+    implementation("io.github.openhtmltopdf:openhtmltopdf-pdfbox:$openHtmlToPdfVersion")
+    implementation("io.github.openhtmltopdf:openhtmltopdf-slf4j:$openHtmlToPdfVersion")
+
+    implementation("org.jsoup:jsoup:$jsoupVersion")
+
+    implementation("net.codinux.log:klf:$klfVersion")
+
+
+    testImplementation(kotlin("test"))
+
+    testImplementation("com.willowtreeapps.assertk:assertk:$assertKVersion")
+
+    testImplementation("ch.qos.logback:logback-classic:$logbackVersion")
+}
+
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+
+
+ext["customArtifactId"] = "invoice-creator"
+
+apply(from = "../gradle/scripts/publish-codinux-repo.gradle.kts")

invoice-creator/src/main/kotlin/net/codinux/invoicing/pdf/OpenHtmlToPdfHtmlToPdfConverter.kt

@@ -0,0 +1,40 @@
+package net.codinux.invoicing.pdf
+
+import com.openhtmltopdf.pdfboxout.PdfRendererBuilder
+import org.jsoup.Jsoup
+import org.jsoup.helper.W3CDom
+import org.jsoup.nodes.Document
+import java.io.File
+import java.nio.file.FileSystems
+
+
+open class OpenHtmlToPdfHtmlToPdfConverter {
+
+    open fun renderHtml(htmlFile: File, outputFile: File) =
+        renderHtml(htmlFile.readText(), outputFile)
+
+    open fun renderHtml(html: String, outputFile: File) {
+        val doc = createWellFormedHtml(html)
+        xhtmlToPdf(doc, outputFile)
+    }
+
+    protected open fun xhtmlToPdf(doc: Document, outputPdf: File) {
+        outputPdf.outputStream().use { output ->
+            val baseUri = FileSystems.getDefault().getPath("/src/main/resources")
+                .toUri().toString()
+
+            val builder = PdfRendererBuilder()
+            builder.useFastMode()
+
+            builder.toStream(output)
+            builder.withW3cDocument(W3CDom().fromJsoup(doc), baseUri)
+            builder.run()
+        }
+    }
+
+    protected open fun createWellFormedHtml(html: String): Document =
+        Jsoup.parse(html, Charsets.UTF_8.name()).apply {
+            this.outputSettings().syntax(Document.OutputSettings.Syntax.xml)
+        }
+
+}

invoice-creator/src/main/kotlin/net/codinux/invoicing/pdf/ResourceUtil.kt

@@ -0,0 +1,24 @@
+package net.codinux.invoicing.pdf
+
+import java.io.InputStream
+import java.net.URL
+
+object ResourceUtil {
+
+    fun getResourceUrl(resourcePath: String): URL? =
+        javaClass.classLoader.getResource(resourcePath)
+
+    fun getResourceAsStream(resourcePath: String): InputStream =
+        javaClass.classLoader.getResourceAsStream(resourcePath)!!
+
+    fun getResourceBytes(resourcePath: String): ByteArray =
+        getResourceAsStream(resourcePath).use {
+            it.readBytes()
+        }
+
+    fun getResourceAsText(resourcePath: String): String =
+        getResourceAsStream(resourcePath).use { inputStream ->
+            inputStream.reader().use { it.readText() }
+        }
+
+}

invoice-creator/src/test/resources/logback-test.xml

@@ -0,0 +1,32 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+
+        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
+            <level>DEBUG</level>
+        </filter>
+    </appender>
+
+    <!-- Insert the current time formatted as "yyyyMMdd'T'HHmmss" under
+         the key "bySecond" into the logger context. This value will be
+         available to all subsequent configuration elements. -->
+    <timestamp key="bySecond" datePattern="yyyyMMdd'T'HHmmss"/>
+
+    <root level="ALL">
+        <appender-ref ref="STDOUT"/>
+    </root>
+
+    <!-- Apache FOP will flood otherwise the log so that test run crashes -->
+    <logger name="org.apache.fop" level="INFO">
+        <appender-ref ref="STDOUT"/>
+    </logger>
+    <logger name="org.apache.xmlgraphics.image.loader.spi.ImageImplRegistry" level="INFO">
+        <appender-ref ref="STDOUT"/>
+    </logger>
+
+</configuration>

settings.gradle.kts

@@ -28,4 +28,6 @@ rootProject.name = "eInvoicing"
 
 include("e-invoice-domain")
 
+include("invoice-creator")
+
 include("e-invoice-api")