16c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath/* 26c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * Copyright (C) 2011 The Android Open Source Project 36c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * 46c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * Licensed under the Apache License, Version 2.0 (the "License"); 56c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * you may not use this file except in compliance with the License. 66c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * You may obtain a copy of the License at 76c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * 86c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * http://www.apache.org/licenses/LICENSE-2.0 96c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * 106c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * Unless required by applicable law or agreed to in writing, software 116c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * distributed under the License is distributed on an "AS IS" BASIS, 126c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 136c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * See the License for the specific language governing permissions and 146c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath * limitations under the License. 156c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath */ 166c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 176c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath#include <include/DataUriSource.h> 186c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 196c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath#include <net/base/data_url.h> 206c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath#include <googleurl/src/gurl.h> 216c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 226c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 236c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamathnamespace android { 246c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 256c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan KamathDataUriSource::DataUriSource(const char *uri) : 266c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath mDataUri(uri), 276c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath mInited(NO_INIT) { 286c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 296c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // Copy1: const char *uri -> String8 mDataUri. 306c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath std::string mimeTypeStr, unusedCharsetStr, dataStr; 316c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // Copy2: String8 mDataUri -> std::string 326c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath const bool ret = net::DataURL::Parse( 336c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath GURL(std::string(mDataUri.string())), 346c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath &mimeTypeStr, &unusedCharsetStr, &dataStr); 356c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // Copy3: std::string dataStr -> AString mData 366c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath mData.setTo(dataStr.data(), dataStr.length()); 376c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath mInited = ret ? OK : UNKNOWN_ERROR; 386c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 396c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // The chromium data url implementation defaults to using "text/plain" 406c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // if no mime type is specified. We prefer to leave this unspecified 416c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath // instead, since the mime type is sniffed in most cases. 426c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath if (mimeTypeStr != "text/plain") { 436c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath mMimeType = mimeTypeStr.c_str(); 446c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath } 456c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath} 466c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 476c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamathssize_t DataUriSource::readAt(off64_t offset, void *out, size_t size) { 486c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath if (mInited != OK) { 496c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath return mInited; 506c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath } 516c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 526c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath const off64_t length = mData.size(); 536c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath if (offset >= length) { 546c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath return UNKNOWN_ERROR; 556c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath } 566c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 576c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath const char *dataBuf = mData.c_str(); 586c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath const size_t bytesToCopy = 596c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath offset + size >= length ? (length - offset) : size; 606c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 616c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath if (bytesToCopy > 0) { 626c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath memcpy(out, dataBuf + offset, bytesToCopy); 636c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath } 646c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 656c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath return bytesToCopy; 666c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath} 676c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath 686c83e3be2921009ff7dcfced2a3eda7811b8b041Narayan Kamath} // namespace android 69