HandlesRequestsForCoffee.java
package com.github.searls.jasmine.coffee;
import com.github.searls.jasmine.config.JasmineConfiguration;
import com.github.searls.jasmine.format.BuildsJavaScriptToWriteFailureHtml;
import org.apache.commons.io.IOUtils;
import org.eclipse.jetty.http.HttpHeaders;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.util.resource.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
public class HandlesRequestsForCoffee {
private CoffeeScript coffeeScript = new CoffeeScript();
private BuildsJavaScriptToWriteFailureHtml buildsJavaScriptToWriteFailureHtml = new BuildsJavaScriptToWriteFailureHtml();
private JasmineConfiguration configuration;
public HandlesRequestsForCoffee(JasmineConfiguration configuration) {
this.configuration = configuration;
}
public void handle(Request baseRequest, HttpServletResponse response, Resource resource) throws IOException {
baseRequest.setHandled(true);
String javascript = null;
if (!configuration.isCoffeeScriptCompilationEnabled()) {
// CoffeeScript RequireJS plugin should be used for translation
javascript = IOUtils.toString(resource.getInputStream(), "UTF-8");
} else {
javascript = compileCoffee(resource);
}
setHeaders(response, resource, javascript);
writeResponse(response, javascript);
}
private void writeResponse(HttpServletResponse response, String javascript) throws IOException {
response.getWriter().write(javascript);
}
private void setHeaders(HttpServletResponse response, Resource resource, String javascript) {
response.setCharacterEncoding("UTF-8");
response.setContentType("text/javascript");
response.setDateHeader(HttpHeaders.LAST_MODIFIED, resource.lastModified());
try {
int contentLength = javascript.getBytes("UTF-8").length;
response.setHeader(HttpHeaders.CONTENT_LENGTH, Integer.toString(contentLength));
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(
"The JVM does not support the compiler's default encoding.", e);
}
}
private String compileCoffee(Resource resource) {
try {
return coffeeScript.compile(IOUtils.toString(resource.getInputStream(), "UTF-8"));
} catch (Exception e) {
return buildsJavaScriptToWriteFailureHtml.build("CoffeeScript Error: failed to compile <code>" + resource.getName() + "</code>. <br/>Error message:<br/><br/><code>" + e.getMessage() + "</code>");
}
}
}