+package org.argeo.cms.http.server;
+
+import java.net.URI;
+import java.util.Objects;
+
+import com.sun.net.httpserver.HttpContext;
+import com.sun.net.httpserver.HttpExchange;
+
+/** HTTP utilities on the server-side. */
+public class HttpServerUtils {
+ private final static String SLASH = "/";
+
+ private static String extractPathWithingContext(HttpContext httpContext, String fullPath, boolean startWithSlash) {
+ Objects.requireNonNull(fullPath);
+ String contextPath = httpContext.getPath();
+ if (!fullPath.startsWith(contextPath))
+ throw new IllegalArgumentException(fullPath + " does not belong to context" + contextPath);
+ String path = fullPath.substring(contextPath.length());
+ // TODO optimise?
+ if (!startWithSlash && path.startsWith(SLASH)) {
+ path = path.substring(1);
+ } else if (startWithSlash && !path.startsWith(SLASH)) {
+ path = SLASH + path;
+ }
+ return path;
+ }
+
+ /** Path within the context, NOT starting with a slash. */
+ public static String relativize(HttpExchange exchange) {
+ URI uri = exchange.getRequestURI();
+ HttpContext httpContext = exchange.getHttpContext();
+ return extractPathWithingContext(httpContext, uri.getPath(), false);
+ }
+
+ /** Path within the context, starting with a slash. */
+ public static String subPath(HttpExchange exchange) {
+ URI uri = exchange.getRequestURI();
+ HttpContext httpContext = exchange.getHttpContext();
+ return extractPathWithingContext(httpContext, uri.getPath(), true);
+ }
+
+ /** singleton */
+ private HttpServerUtils() {
+
+ }
+}