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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 ImgHandler::canHandle(const char* method, const char* url) {
     17     static const char* kBasePath = "/img";
     18     return 0 == strcmp(method, MHD_HTTP_METHOD_GET) &&
     19            0 == strncmp(url, kBasePath, strlen(kBasePath));
     20 }
     21 
     22 int ImgHandler::handle(Request* request, MHD_Connection* connection,
     23                        const char* url, const char* method,
     24                        const char* upload_data, size_t* upload_data_size) {
     25     SkTArray<SkString> commands;
     26     SkStrSplit(url, "/", &commands);
     27 
     28     if (!request->hasPicture() || commands.count() > 3) {
     29         return MHD_NO;
     30     }
     31 
     32     int n, m = -1;
     33     // /img or /img/N
     34     if (commands.count() == 1) {
     35         n = request->fDebugCanvas->getSize() - 1;
     36     } else if (commands.count() == 2) {
     37         sscanf(commands[1].c_str(), "%d", &n);
     38     } else {
     39         sscanf(commands[1].c_str(), "%d", &n);
     40         sscanf(commands[2].c_str(), "%d", &m);
     41     }
     42 
     43     sk_sp<SkData> data(request->drawToPng(n, m));
     44     return SendData(connection, data.get(), "image/png");
     45 }
     46