public FreeMarkerTemplateEngineImpl() {
super(DEFAULT_TEMPLATE_EXTENSION, DEFAULT_MAX_CACHE_SIZE);
loader = new FreeMarkerTemplateLoader();
config = new Configuration(Configuration.VERSION_2_3_22);
config.setObjectWrapper(new VertxWebObjectWrapper(config.getIncompatibleImprovements()));
config.setTemplateLoader(loader);
}
/** Creates a plain text (unparsed) template. */
private UnboundTemplate(String content, String sourceName, Configuration cfg) {
NullArgumentException.check(cfg);
this.cfg = cfg;
this.sourceName = sourceName;
this.templateLanguageVersion =
normalizeTemplateLanguageVersion(cfg.getIncompatibleImprovements());
this.templateSpecifiedEncoding = null;
rootElement = new TextBlock(content);
actualTagSyntax = cfg.getTagSyntax();
actualNamingConvention = cfg.getNamingConvention();
}
/**
* @param reader Reads the template source code
* @param cfg The FreeMarker configuration settings; some of them influences parsing, also the
* resulting {@link UnboundTemplate} will be bound to this.
* @param assumedEncoding This is the name of the charset that we are supposed to be using. This
* is only needed to check if the encoding specified in the {@code #ftl} header (if any)
* matches this. If this is non-{@code null} and they don't match, a {@link
* WrongEncodingException} will be thrown by the parser.
* @param sourceName Shown in error messages as the template "file" location.
*/
UnboundTemplate(Reader reader, String sourceName, Configuration cfg, String assumedEncoding)
throws IOException {
NullArgumentException.check(cfg);
this.cfg = cfg;
this.sourceName = sourceName;
this.templateLanguageVersion =
normalizeTemplateLanguageVersion(cfg.getIncompatibleImprovements());
LineTableBuilder ltbReader;
try {
if (!(reader instanceof BufferedReader)) {
reader = new BufferedReader(reader, 0x1000);
}
ltbReader = new LineTableBuilder(reader);
reader = ltbReader;
try {
FMParser parser =
new FMParser(
this,
reader,
assumedEncoding,
cfg.getStrictSyntaxMode(),
cfg.getWhitespaceStripping(),
cfg.getTagSyntax(),
cfg.getNamingConvention(),
cfg.getIncompatibleImprovements().intValue());
TemplateElement rootElement;
try {
rootElement = parser.Root();
} catch (IndexOutOfBoundsException exc) {
// There's a JavaCC bug where the Reader throws a RuntimeExcepton and then JavaCC fails
// with
// IndexOutOfBoundsException. If that wasn't the case, we just rethrow. Otherwise we
// suppress the
// IndexOutOfBoundsException and let the real cause to be thrown later.
if (!ltbReader.hasFailure()) {
throw exc;
}
rootElement = null;
}
this.rootElement = rootElement;
this.actualTagSyntax = parser._getLastTagSyntax();
this.actualNamingConvention = parser._getLastNamingConvention();
this.templateSpecifiedEncoding = parser._getTemplateSpecifiedEncoding();
} catch (TokenMgrError exc) {
// TokenMgrError VS ParseException is not an interesting difference for the user, so we just
// convert it
// to ParseException
throw exc.toParseException(this);
}
} catch (ParseException e) {
e.setTemplateName(getSourceName());
throw e;
} finally {
reader.close();
}
// Throws any exception that JavaCC has silently treated as EOF:
ltbReader.throwFailure();
if (prefixToNamespaceURIMapping != null) {
prefixToNamespaceURIMapping = Collections.unmodifiableMap(prefixToNamespaceURIMapping);
namespaceURIToPrefixMapping = Collections.unmodifiableMap(namespaceURIToPrefixMapping);
}
}