// Return the selected template and format given the YAML front matter public RmdSelectedTemplate getTemplateFormat(String yaml) { // This is in the editor load path, so guard against exceptions and log // any we find without bringing down the editor. Failing to find a // template here just turns off the template-specific UI format editor. try { YamlTree tree = new YamlTree(yaml); boolean isShiny = false; if (tree.getKeyValue(RmdFrontMatter.KNIT_KEY).length() > 0) return null; // Find the template appropriate to the first output format listed. // If no output format is present, assume HTML document (as the // renderer does). List<String> outFormats = getOutputFormats(tree); String outFormat = outFormats == null ? RmdOutputFormat.OUTPUT_HTML_DOCUMENT : outFormats.get(0); RmdTemplate template = getTemplateForFormat(outFormat); if (template == null) return null; // If this format produces HTML and is marked as Shiny, treat it as // a Shiny format if (template.getFormat(outFormat).getExtension().equals("html") && tree.getKeyValue(RmdFrontMatter.RUNTIME_KEY).equals(RmdFrontMatter.SHINY_RUNTIME)) { isShiny = true; } return new RmdSelectedTemplate(template, outFormat, isShiny); } catch (Exception e) { Debug.log("Warning: Exception thrown while parsing YAML:\n" + yaml); } return null; }
private List<String> getOutputFormats(YamlTree tree) { List<String> outputs = tree.getChildKeys(RmdFrontMatter.OUTPUT_KEY); if (outputs == null) return null; if (outputs.isEmpty()) outputs.add(tree.getKeyValue(RmdFrontMatter.OUTPUT_KEY)); return outputs; }
public String convertYamlToShinyDoc(String yaml) { YamlTree yamlTree = new YamlTree(yaml); yamlTree.addYamlValue(null, "runtime", "shiny"); return yamlTree.toString(); }