/**
* Reads the template, merging with optional arguments
*
* @param templateName Name of the template file to use
* @param arguments Array to objects to use - must match the template's needs, can be {@code null}
* @return {@code TemplateContentData} object with subject and body based on passed arguments
*/
public TemplateContentData getContentData(String templateName, Object[] arguments) {
TemplateContentData templateContentData = getContentDataFromTemplate(templateName);
if (arguments != null && arguments.length > 0) {
templateContentData.setContent(
MessageFormat.format(templateContentData.getContent(), arguments));
}
return templateContentData;
}
/** Reads the template file, parsing all data to TemplateContentData object */
private TemplateContentData getContentDataFromTemplate(String templateName) {
TemplateContentData templateContentData = new TemplateContentData();
StringBuilder contentPart = new StringBuilder();
BufferedReader reader = null;
try {
reader =
new BufferedReader(
new InputStreamReader(
Resources.newInputStreamSupplier(Resources.getResource(templateName)).getInput(),
Charset.defaultCharset()));
String line;
while ((line = reader.readLine()) != null) {
if (line.toLowerCase().startsWith(KEY_SUBJECT)) {
templateContentData.setSubject(line.substring(KEY_SUBJECT.length()).trim());
} else if (!line.startsWith("#")) {
contentPart.append(line);
}
}
templateContentData.setContent(contentPart.toString());
} catch (FileNotFoundException e) {
throw new RuntimeException("Couldn't find template: " + templateName);
} catch (IOException e) {
throw new RuntimeException("I/O exception while reading template: " + templateName);
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return templateContentData;
}
