argeo/cms/http/HttpServerUtils.java

   1 package org.argeo.cms.http;
   2
   3 import java.net.URI;
   4 import java.util.Objects;
   5
   6 import com.sun.net.httpserver.HttpContext;
   7 import com.sun.net.httpserver.HttpExchange;
   8
   9 public class HttpServerUtils {
  10         private final static String SLASH = "/";
  11
  12         private static String extractPathWithingContext(HttpContext httpContext, String fullPath, boolean startWithSlash) {
  13                 Objects.requireNonNull(fullPath);
  14                 String contextPath = httpContext.getPath();
  15                 if (!fullPath.startsWith(contextPath))
  16                         throw new IllegalArgumentException(fullPath + " does not belong to context" + contextPath);
  17                 String path = fullPath.substring(contextPath.length());
  18                 // TODO optimise?
  19                 if (!startWithSlash && path.startsWith(SLASH)) {
  20                         path = path.substring(1);
  21                 } else if (startWithSlash && !path.startsWith(SLASH)) {
  22                         path = SLASH + path;
  23                 }
  24                 return path;
  25         }
  26
  27         /** Path within the context, NOT starting with a slash. */
  28         public static String relativize(HttpExchange exchange) {
  29                 URI uri = exchange.getRequestURI();
  30                 HttpContext httpContext = exchange.getHttpContext();
  31                 return extractPathWithingContext(httpContext, uri.getPath(), false);
  32         }
  33
  34         /** Path within the context, starting with a slash. */
  35         public static String subPath(HttpExchange exchange) {
  36                 URI uri = exchange.getRequestURI();
  37                 HttpContext httpContext = exchange.getHttpContext();
  38                 return extractPathWithingContext(httpContext, uri.getPath(), true);
  39         }
  40
  41         /** singleton */
  42         private HttpServerUtils() {
  43
  44         }
  45 }