InputStream transform()

in enforcer-rules/src/main/java/org/apache/maven/enforcer/rules/ExternalRules.java [193:214]

• 21 lines of code
• 5 McCabe index (conditional complexity)

    InputStream transform(String sourceLocation, InputStream sourceXml, String xsltLocation) {
        if (xsltLocation == null || xsltLocation.trim().isEmpty()) {
            return sourceXml;
        }

        try (InputStream in = resolveDescriptor(xsltLocation);
                ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            Transformer transformer = TransformerFactory.newInstance().newTransformer(new StreamSource(in));
            transformer.transform(new StreamSource(sourceXml), new StreamResult(baos));
            final byte[] bytes = baos.toByteArray();
            getLog().info(() -> ("Rules transformed by " + xsltLocation + " from " + location + ":\n\n"
                    + new String(bytes, StandardCharsets.UTF_8)));
            return new ByteArrayInputStream(bytes);
        } catch (IOException
                | EnforcerRuleException
                | TransformerConfigurationException
                | TransformerFactoryConfigurationError e) {
            throw new RuntimeException("Could not open resource " + xsltLocation);
        } catch (TransformerException e) {
            throw new RuntimeException("Could not transform " + sourceLocation + " usinng XSLT " + xsltLocation);
        }
    }