C++ FormData::elements方法代码示例

static HTTPBody toHTTPBody(const FormData& formData)
{
    HTTPBody httpBody;

    for (const auto& formDataElement : formData.elements()) {
        HTTPBody::Element element;

        switch (formDataElement.m_type) {
        case FormDataElement::Type::Data:
            element.type = HTTPBody::Element::Type::Data;
            element.data = formDataElement.m_data;
            break;

        case FormDataElement::Type::EncodedFile:
            element.filePath = formDataElement.m_filename;
            element.fileStart = formDataElement.m_fileStart;
            if (formDataElement.m_fileLength != BlobDataItem::toEndOfFile)
                element.fileLength = formDataElement.m_fileLength;
            if (formDataElement.m_expectedFileModificationTime != invalidFileTime())
                element.expectedFileModificationTime = formDataElement.m_expectedFileModificationTime;
            break;

        case FormDataElement::Type::EncodedBlob:
            element.blobURLString = formDataElement.m_url.string();
            break;
        }

        httpBody.elements.append(WTF::move(element));
    }

    return httpBody;
}

CFArrayRef arrayFromFormData(const FormData& d)
{
    size_t size = d.elements().size();
    CFMutableArrayRef a = CFArrayCreateMutable(0, d.elements().size(), &kCFTypeArrayCallBacks);
    for (size_t i = 0; i < size; ++i) {
        const FormDataElement& e = d.elements()[i];
        if (e.m_type == FormDataElement::data) {
            CFDataRef data = CFDataCreate(0, (const UInt8*)e.m_data.data(), e.m_data.size());
            CFArrayAppendValue(a, data);
            CFRelease(data);
        } else {
            ASSERT(e.m_type == FormDataElement::encodedFile);
            CFStringRef filename = e.m_filename.createCFString();
            CFArrayAppendValue(a, filename);
            CFRelease(filename);
        }
    }
    return a;
}

static void* formCreate(CFReadStreamRef stream, void* context)
{
    FormData* formData = static_cast<FormData*>(context);

    CFSetCallBacks runLoopAndModeCallBacks = { 0, pairRetain, pairRelease, NULL, pairEqual, pairHash };

    FormStreamFields* newInfo = new FormStreamFields;
    newInfo->scheduledRunLoopPairs = CFSetCreateMutable(0, 0, &runLoopAndModeCallBacks);
    newInfo->currentStream = NULL;
    newInfo->currentData = 0;
    newInfo->formStream = stream; // Don't retain. That would create a reference cycle.

    // Append in reverse order since we remove elements from the end.
    size_t size = formData->elements().size();
    newInfo->remainingElements.reserveCapacity(size);
    for (size_t i = 0; i < size; ++i)
        newInfo->remainingElements.append(formData->elements()[size - i - 1]);

    getStreamFormDatas().set(stream, adoptRef(formData));

    return newInfo;
}

static bool startHttp(ResourceHandle* handle)
{
    ASSERT(handle);

    SoupSession* session = handle->defaultSession();
    ensureSessionIsInitialized(session);

    ResourceHandleInternal* d = handle->getInternal();

    ResourceRequest request(handle->request());
    KURL url(request.url());
    url.removeFragmentIdentifier();
    request.setURL(url);

    d->m_msg = request.toSoupMessage();
    if (!d->m_msg)
        return false;

    if(!handle->shouldContentSniff())
        soup_message_disable_feature(d->m_msg, SOUP_TYPE_CONTENT_SNIFFER);

    g_signal_connect(d->m_msg, "restarted", G_CALLBACK(restartedCallback), handle);
    g_signal_connect(d->m_msg, "got-headers", G_CALLBACK(gotHeadersCallback), handle);
    g_signal_connect(d->m_msg, "content-sniffed", G_CALLBACK(contentSniffedCallback), handle);
    g_signal_connect(d->m_msg, "got-chunk", G_CALLBACK(gotChunkCallback), handle);

    g_object_set_data(G_OBJECT(d->m_msg), "resourceHandle", reinterpret_cast<void*>(handle));

    FormData* httpBody = d->m_request.httpBody();
    if (httpBody && !httpBody->isEmpty()) {
        size_t numElements = httpBody->elements().size();

        // handle the most common case (i.e. no file upload)
        if (numElements < 2) {
            Vector<char> body;
            httpBody->flatten(body);
            soup_message_set_request(d->m_msg, d->m_request.httpContentType().utf8().data(),
                                     SOUP_MEMORY_COPY, body.data(), body.size());
        } else {
            /*
             * we have more than one element to upload, and some may
             * be (big) files, which we will want to mmap instead of
             * copying into memory; TODO: support upload of non-local
             * (think sftp://) files by using GIO?
             */
            soup_message_body_set_accumulate(d->m_msg->request_body, FALSE);
            for (size_t i = 0; i < numElements; i++) {
                const FormDataElement& element = httpBody->elements()[i];

                if (element.m_type == FormDataElement::data)
                    soup_message_body_append(d->m_msg->request_body, SOUP_MEMORY_TEMPORARY, element.m_data.data(), element.m_data.size());
                else {
                    /*
                     * mapping for uploaded files code inspired by technique used in
                     * libsoup's simple-httpd test
                     */
                    GError* error = 0;
                    gchar* fileName = filenameFromString(element.m_filename);
                    GMappedFile* fileMapping = g_mapped_file_new(fileName, false, &error);

                    g_free(fileName);

                    if (error) {
                        g_error_free(error);
                        g_signal_handlers_disconnect_matched(d->m_msg, G_SIGNAL_MATCH_DATA,
                                                             0, 0, 0, 0, handle);
                        g_object_unref(d->m_msg);
                        d->m_msg = 0;

                        return false;
                    }

                    SoupBuffer* soupBuffer = soup_buffer_new_with_owner(g_mapped_file_get_contents(fileMapping),
                                                                        g_mapped_file_get_length(fileMapping),
                                                                        fileMapping,
#if GLIB_CHECK_VERSION(2, 21, 3)
                                                                        reinterpret_cast<GDestroyNotify>(g_mapped_file_unref));
#else
                                                                        reinterpret_cast<GDestroyNotify>(g_mapped_file_free));
#endif
                    soup_message_body_append_buffer(d->m_msg->request_body, soupBuffer);
                    soup_buffer_free(soupBuffer);
                }
            }
        }
    }