package org.asciidoctor.integrationguide.extension; //tag::include[] import org.asciidoctor.ast.Document; import org.asciidoctor.extension.Preprocessor; import org.asciidoctor.extension.PreprocessorReader; import java.util.ArrayList; import java.util.List; public class CommentPreprocessor extends Preprocessor { // <1> @Override public void process(Document document, PreprocessorReader reader) { List<String> lines = reader.readLines(); // <2> List<String> newLines = new ArrayList<String>(); boolean inComment = false; for (String line: lines) { // <3> if (line.trim().equals("////")) { if (!inComment) { newLines.add("[NOTE]"); } newLines.add("--"); inComment = !inComment; } else { newLines.add(line); } } reader.restoreLines(newLines); // <4> } } //end::include[]