Move urlhandlers out of skiaserve.cpp

tools/skiaserve/urlhandlers/CmdHandler.cpp

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "UrlHandler.h"
+
+#include "microhttpd.h"
+#include "../Request.h"
+#include "../Response.h"
+
+using namespace Response;
+
+bool CmdHandler::canHandle(const char* method, const char* url) {
+    const char* kBasePath = "/cmd";
+    return 0 == strncmp(url, kBasePath, strlen(kBasePath));
+}
+
+int CmdHandler::handle(Request* request, MHD_Connection* connection,
+                       const char* url, const char* method,
+                       const char* upload_data, size_t* upload_data_size) {
+    SkTArray<SkString> commands;
+    SkStrSplit(url, "/", &commands);
+
+    if (!request->fPicture.get() || commands.count() > 3) {
+        return MHD_NO;
+    }
+
+    // /cmd or /cmd/N
+    if (0 == strcmp(method, MHD_HTTP_METHOD_GET)) {
+        int n;
+        if (commands.count() == 1) {
+            n = request->fDebugCanvas->getSize() - 1;
+        } else {
+            sscanf(commands[1].c_str(), "%d", &n);
+        }
+        return SendJSON(connection, request, n);
+    }
+
+    // /cmd/N, for now only delete supported
+    if (commands.count() == 2 && 0 == strcmp(method, MHD_HTTP_METHOD_DELETE)) {
+        int n;
+        sscanf(commands[1].c_str(), "%d", &n);
+        request->fDebugCanvas->deleteDrawCommandAt(n);
+        return SendOK(connection);
+    }
+
+    // /cmd/N/[0|1]
+    if (commands.count() == 3 && 0 == strcmp(method, MHD_HTTP_METHOD_POST))  {
+        int n, toggle;
+        sscanf(commands[1].c_str(), "%d", &n);
+        sscanf(commands[2].c_str(), "%d", &toggle);
+        request->fDebugCanvas->toggleCommand(n, toggle);
+        return SendOK(connection);
+    }
+
+    return MHD_NO;
+}
+