Export a list of pages to Markdown on the file system

Description

Export all pages under the Sandbox space to file, converting the page contents to Markdown 1.2 syntax.

Requires Programming Rights.

{{groovy}}
import org.xwiki.environment.*
import org.xwiki.model.reference.*

if (request.confirm == '1') {
  services.query.xwql("select distinct doc.fullName from Document doc where doc.space like 'Sandbox' or doc.space like 'Sandbox.%'").execute().each() {
    print "* Converting ${it} to MD..."
    def itemDoc = xwiki.getDocument(it)
    def newContent = services.rendering.render(itemDoc.getXDOM(), 'markdown/1.2')
    def tmpDir = new File(services.component.getInstance(Environment.class).temporaryDirectory, 'md-export')
    def pathSerializer = services.component.getInstance(EntityReferenceSerializer.TYPE_STRING, 'fspath')
    def outputFile = new File(tmpDir, pathSerializer.serialize(itemDoc.documentReference))
    outputFile.parentFile.mkdirs()
    outputFile << newContent
    println "Saved in ${outputFile.toString()}"
  }
}

println "[[Export>>||queryString='confirm=1']]"
{{/groovy}}

Results in the output (for ex):

Converting Sandbox.TestPage1 to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/TestPage1
Converting Sandbox.WebHome to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/WebHome
Converting Sandbox.TestPage3 to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/TestPage3
Converting Sandbox.TestPage2 to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/TestPage2
Converting Sandbox.ApplicationsPanelEntry to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/ApplicationsPanelEntry
Converting Sandbox.WebPreferences to MD...Saved in /var/cache/tomcat9/Catalina/localhost/xwiki/xwiki-temp/md-export/playground/Sandbox/WebPreferences