CmdHandler.cpp

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/*
 * 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 "tools/skiaserve/urlhandlers/UrlHandler.h"
 
#include "microhttpd.h"
#include "src/core/SkStringUtils.h"
#include "tools/skiaserve/Request.h"
#include "tools/skiaserve/Response.h"
 
using namespace skia_private;
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) {
    TArray<SkString> commands;
    SkStrSplit(url, "/", &commands);
 
    if (!request->hasPicture() || commands.size() > 3) {
        return MHD_NO;
    }
 
    // /cmd
    if (0 == strcmp(method, MHD_HTTP_METHOD_GET)) {
        sk_sp<SkData> data(request->getJsonOps());
        return SendData(connection, data.get(), "application/json");
    }
 
    // /cmd/N, for now only delete supported
    if (commands.size() == 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.size() == 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, SkToBool(toggle));
        return SendOK(connection);
    }
 
    return MHD_NO;
}