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      1 /*
      2  * Copyright 2016 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "UrlHandler.h"
      9 
     10 #include "microhttpd.h"
     11 #include "../Request.h"
     12 #include "../Response.h"
     13 
     14 using namespace Response;
     15 
     16 bool CmdHandler::canHandle(const char* method, const char* url) {
     17     const char* kBasePath = "/cmd";
     18     return 0 == strncmp(url, kBasePath, strlen(kBasePath));
     19 }
     20 
     21 int CmdHandler::handle(Request* request, MHD_Connection* connection,
     22                        const char* url, const char* method,
     23                        const char* upload_data, size_t* upload_data_size) {
     24     SkTArray<SkString> commands;
     25     SkStrSplit(url, "/", &commands);
     26 
     27     if (!request->hasPicture() || commands.count() > 3) {
     28         return MHD_NO;
     29     }
     30 
     31     // /cmd or /cmd/N
     32     if (0 == strcmp(method, MHD_HTTP_METHOD_GET)) {
     33         int n;
     34         if (commands.count() == 1) {
     35             n = request->getLastOp();
     36         } else {
     37             sscanf(commands[1].c_str(), "%d", &n);
     38         }
     39 
     40         sk_sp<SkData> data(request->getJsonOps(n));
     41         return SendData(connection, data.get(), "application/json");
     42     }
     43 
     44     // /cmd/N, for now only delete supported
     45     if (commands.count() == 2 && 0 == strcmp(method, MHD_HTTP_METHOD_DELETE)) {
     46         int n;
     47         sscanf(commands[1].c_str(), "%d", &n);
     48         request->fDebugCanvas->deleteDrawCommandAt(n);
     49         return SendOK(connection);
     50     }
     51 
     52     // /cmd/N/[0|1]
     53     if (commands.count() == 3 && 0 == strcmp(method, MHD_HTTP_METHOD_POST))  {
     54         int n, toggle;
     55         sscanf(commands[1].c_str(), "%d", &n);
     56         sscanf(commands[2].c_str(), "%d", &toggle);
     57         request->fDebugCanvas->toggleCommand(n, SkToBool(toggle));
     58         return SendOK(connection);
     59     }
     60 
     61     return MHD_NO;
     62 }
     63