Java Code Examples for com.github.jknack.handlebars.helper.StringHelpers

/**
 * Compile given template.
 *
 * @param defaultTemplateDir template directory
 * @param templateName template name
 * @return Generated template
 * @throws IOException if file read went wrong
 */
public static Template compileTemplate(String defaultTemplateDir, String templateName) throws IOException {
    String templatesDirPath = System.getProperty(GeneratorConstants.TEMPLATES_DIR_PATH_KEY, defaultTemplateDir);
    ClassPathTemplateLoader cpTemplateLoader = new ClassPathTemplateLoader((templatesDirPath));
    FileTemplateLoader fileTemplateLoader = new FileTemplateLoader(templatesDirPath);
    cpTemplateLoader.setSuffix(GeneratorConstants.TEMPLATES_SUFFIX);
    fileTemplateLoader.setSuffix(GeneratorConstants.TEMPLATES_SUFFIX);

    Handlebars handlebars = new Handlebars().with(cpTemplateLoader, fileTemplateLoader);
    handlebars.setStringParams(true);
    handlebars.registerHelpers(StringHelpers.class);
    handlebars.registerHelper("equals", (object, options) -> {
        Object param0 = options.param(0, null);

        if (param0 == null) {
            throw new IllegalArgumentException("found 'null', expected 'string'");
        }
        if (object != null && object.toString().equals(param0.toString())) {
                return options.fn(options.context);
        }

        return options.inverse();
    });

    return handlebars.compile(templateName);
}
 

@Test
public void testTemplatesCompile() throws Exception {
   TemplateLoader loader = new IrisResourceLoader("templates", 0);
   Handlebars handlebars = 
         new Handlebars(loader)
            .registerHelper(EnumHelper.NAME, EnumHelper.INSTANCE)
            .registerHelpers(HandlebarsHelpersSource.class)
            .registerHelper(IfEqualHelper.NAME, IfEqualHelper.INSTANCE)
            .registerHelpers(StringHelpers.class);
   Validator v = new Validator();
   String templateDir =
         Resources
            .getResource("templates")
            .getUri()
            .toURL()
            .getPath();
   for(File template: new File(templateDir).listFiles((file) -> file != null && file.getName() != null && file.getName().endsWith(".hbs"))) {
      try {
         String name = template.getName();
         name = name.substring(0, name.length() - 4);
         Template tpl = handlebars.compile(name);
         if(name.endsWith("-email")) {
            // TODO validate email xml
            continue;
         }
         
         String body  = tpl.apply(Context.newContext(Collections.emptyMap()));
         JSON.fromJson(body, Map.class);
      }
      catch(Exception e) {
         e.printStackTrace();
         v.error("Failed to compile: " + template.getName() + " -- " + e.getMessage());
      }
   }
   v.throwIfErrors();
}
 

public Templater() {
	templates.put(MSG_KEY_THING + "-apns", TEMPLATE_THING);
	templates.put(MSG_KEY_ENUM + "-apns", TEMPLATE_ENUM);
	handlebars = new Handlebars()
		.registerHelper(EnumHelper.NAME, EnumHelper.INSTANCE)
		.registerHelpers(HandlebarsHelpersSource.class)
		.registerHelpers(StringHelpers.class);
}
 

private void init(String prefix, int cacheSize){
	LOGGER.info("Handlebars Template Service Initialization with a location of {} and cache size of {}",prefix,cacheSize);
	templateCache = new ConcurrentMapTemplateCache();		
	
	TemplateLoader loader=new IrisResourceLoader(prefix, cacheSize);
	handlebars=new Handlebars(loader)
		.with(templateCache)
		.registerHelper(EnumHelper.NAME, EnumHelper.INSTANCE)
		.registerHelper(IfEqualHelper.NAME, IfEqualHelper.INSTANCE)
		.registerHelpers(HandlebarsHelpersSource.class)
		.registerHelpers(StringHelpers.class)
		.registerHelper(PluralizeHelper.NAME, PluralizeHelper.INSTANCE);
}
 

public String compileTemplate(TemplatingExecutor executor,
                              Map<String, Object> bundle, String templateFile) throws IOException {
    TemplateLoader loader = new AbstractTemplateLoader() {
        @Override
        public TemplateSource sourceAt(String location) {
            return findTemplate(executor, location);
        }
    };

    Context context = Context
            .newBuilder(bundle)
            .resolver(
                    MapValueResolver.INSTANCE,
                    JavaBeanValueResolver.INSTANCE,
                    FieldValueResolver.INSTANCE)
            .build();

    Handlebars handlebars = new Handlebars(loader);
    handlebars.registerHelperMissing((obj, options) -> {
        LOGGER.warn(String.format(Locale.ROOT, "Unregistered helper name '%s', processing template:\n%s", options.helperName, options.fn.text()));
        return "";
    });
    handlebars.registerHelper("json", Jackson2Helper.INSTANCE);
    StringHelpers.register(handlebars);
    handlebars.registerHelpers(ConditionalHelpers.class);
    handlebars.registerHelpers(org.openapitools.codegen.templating.handlebars.StringHelpers.class);
    Template tmpl = handlebars.compile(templateFile);
    return tmpl.apply(context);
}
 

public static Template template(String templateSubFolder, String templateName) {
	try {
		Handlebars handlebars = new Handlebars(
				new ClassPathTemplateLoader("/templates/" + templateSubFolder));
		handlebars.registerHelper("replace", StringHelpers.replace);
		handlebars.registerHelper("capitalizeFirst", StringHelpers.capitalizeFirst);
		return handlebars.compile(templateName);
	}
	catch (IOException e) {
		throw new IllegalStateException(e);
	}
}
 

public TemplateEngine(String template) {
    SimpleFilterProvider simpleFilterProvider = new SimpleFilterProvider();
    simpleFilterProvider.setFailOnUnknownId(false);
    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.setFilters(simpleFilterProvider);

    handlebars = new Handlebars(new ClassPathTemplateLoader("/", ""));
    handlebars.registerHelper("json", new Jackson2Helper(objectMapper));
    handlebars.registerHelper("join", StringHelpers.join);
    handlebars.registerHelper("ifequal", IfEqualHelper.INSTANCE);
    handlebars.prettyPrint(true);

    location = "templates/" + template;
}
 

public Xsd2JaxbGenerator() {
    Handlebars handlebars = new Handlebars();
    handlebars.registerHelper("capFirst", StringHelpers.capitalize);
    handlebars.registerHelper("each",
            new com.legstar.jaxb.generator.EachHelper());
    hbtJaxbWrapperFactoryClass = loadTemplate(handlebars,
            JAXB_WRAPPER_FACTORY_CLASS_TEMPLATE_NAME);
    hbtJaxbConverterClass = loadTemplate(handlebars,
            JAXB_CONVERTER_CLASS_TEMPLATE_NAME);
    modelBuilder = new Xsd2CobolTypesModelBuilder();
}
 

public static Template template(String templateName) {
	try {
		Handlebars handlebars = new Handlebars(
				new ClassPathTemplateLoader("/templates/spring-cloud/"));
		handlebars.registerHelper("replace", StringHelpers.replace);
		handlebars.registerHelper("capitalizeFirst", StringHelpers.capitalizeFirst);
		return handlebars.compile(templateName);
	}
	catch (IOException e) {
		throw new IllegalStateException(e);
	}
}
 

public static CharSequence timestampFormat(String timestampVar, Options options) throws IOException {
	Date timestampDateValue = new Date(Long.parseLong(timestampVar));
	return StringHelpers.dateFormat.apply(timestampDateValue, options);
}
 

private Handlebars setupHandlebars() {
    final Handlebars result = new Handlebars();
    result.registerHelpers(StringHelpers.class);
    return result;
}