john / ghost2md

///usr/bin/env jbang "$0" "$@" ; exit $? // // This is a JBang script. You need JBang to run this script. // // To learn more go to https://www.jbang.dev and install JBang. // // Run this script: // ./ghost2md.java -f <input file> -d <output directory> // //DEPS info.picocli:picocli:4.7.7 //DEPS com.jayway.jsonpath:json-path:2.8.0 //DEPS com.fasterxml.jackson.core:jackson-databind:2.19.0 //DEPS io.github.furstenheim:copy_down:1.1 //JAVA 21+ import com.fasterxml.jackson.annotation.JsonIgnoreProperties; import com.jayway.jsonpath.Configuration; import com.jayway.jsonpath.JsonPath; import com.jayway.jsonpath.ParseContext; import com.jayway.jsonpath.TypeRef; import com.jayway.jsonpath.spi.mapper.JacksonMappingProvider; import io.github.furstenheim.CopyDown; import picocli.CommandLine; import picocli.CommandLine.Command; import picocli.CommandLine.Option; import java.io.File; import java.io.FileWriter; import java.util.List; import java.util.concurrent.Callable; @Command(name = "ghost2md", mixinStandardHelpOptions = true, version = "0.1", description = "Converts a Ghost export file to markdown files") public class ghost2md implements Callable<Integer> { private static final ParseContext JSON = JsonPath.using(Configuration.builder().mappingProvider(new JacksonMappingProvider()).build()); private static final CopyDown HTML_TO_MD = new CopyDown(); @Option(names = { "--file", "-f" }, required = true, description = "The exported Ghost JSON file") private File exportFile; @Option(names = { "--dir", "-d" }, defaultValue = "exported", description = "The destination directory") private File destinationDir; @Override public Integer call() throws Exception { if (!exportFile.exists()) { System.err.printf("%s does not exist%n", exportFile.getAbsolutePath()); return 404; } destinationDir.mkdirs(); var json = JSON.parse(exportFile); var posts = json.read("$.db[*].data.posts[*]", new TypeRef<List<Post>>(){}); for (var post : posts) { var filename = post.slug() + ".md"; var markdown = HTML_TO_MD.convert(post.html()); var file = new File(destinationDir, filename); var title = "# " + post.title(); System.out.printf("Writing %s\n", file); try (var writer = new FileWriter(file)) { writer.write(title); writer.write("\n\n"); writer.write(markdown); } } return 0; } @JsonIgnoreProperties(ignoreUnknown = true) record Post(String slug, String title, String html){} public static void main(String[] args) { final int exitCode = new CommandLine(new ghost2md()).execute(args); System.exit(exitCode); } }