Dedicated package for JDK http server

[lgpl/argeo-commons.git] / org.argeo.cms / src / org / argeo / cms / http / server / HttpServerUtils.java

diff --git a/org.argeo.cms/src/org/argeo/cms/http/server/HttpServerUtils.java b/org.argeo.cms/src/org/argeo/cms/http/server/HttpServerUtils.java
new file mode 100644 (file)
index 0000000..ab033f0
--- /dev/null
+++ b/org.argeo.cms/src/org/argeo/cms/http/server/HttpServerUtils.java
@@ -0,0 +1,46 @@
+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() {
+
+       }
+}