private void setOutputFormat(
RmdFrontMatter frontMatter, String format, final CommandWithArg<String> onCompleted) {
// If the format list doesn't already contain the given format, add it
// to the list and transfer any applicable options
if (!JsArrayUtil.jsArrayStringContains(frontMatter.getFormatList(), format)) {
RmdTemplate template = getTemplateForFormat(format);
RmdFrontMatterOutputOptions opts = RmdFrontMatterOutputOptions.create();
if (template != null) {
opts = transferOptions(frontMatter, template, format);
}
frontMatter.setOutputOption(format, opts);
}
frontMatterToYAML(frontMatter, format, onCompleted);
}
private RmdFrontMatterOutputOptions transferOptions(
RmdFrontMatter frontMatter, RmdTemplate template, String format) {
RmdFrontMatterOutputOptions result = RmdFrontMatterOutputOptions.create();
// loop over each option applicable to the new format; if it's
// transferable, try to find it in one of the other formats
JsArrayString options = template.getFormat(format).getOptions();
for (int i = 0; i < options.length(); i++) {
String optionName = options.get(i);
RmdTemplateFormatOption option = template.getOption(optionName);
if (!option.isTransferable()) continue;
// option is transferable, is it present in another front matter entry?
JsArrayString formats = frontMatter.getFormatList();
for (int j = 0; j < formats.length(); j++) {
RmdFrontMatterOutputOptions outOptions = frontMatter.getOutputOption(formats.get(j));
if (outOptions == null) continue;
String val = outOptions.getOptionValue(optionName);
if (val != null) result.setOptionValue(option, val);
}
}
return result;
}