path: root/src/corelib/io/qdataurl.cpp

// Copyright (C) 2016 The Qt Company Ltd.// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only#include"qplatformdefs.h"#include"qurl.h"#include"private/qdataurl_p.h" QT_BEGIN_NAMESPACE using namespaceQt::Literals;/*! \internal Decode a data: URL into its mimetype and payload. Returns a null string if the URL could not be decoded.*/ Q_CORE_EXPORT boolqDecodeDataUrl(const QUrl &uri, QString &mimeType, QByteArray &payload){if(uri.scheme() !="data"_L1 || !uri.host().isEmpty())return false; mimeType =QStringLiteral("text/plain;charset=US-ASCII");// the following would have been the correct thing, but// reality often differs from the specification. People have// data: URIs with ? and #//QByteArray data = QByteArray::fromPercentEncoding(uri.path(QUrl::FullyEncoded).toLatin1());const QByteArray dataArray =QByteArray::fromPercentEncoding(uri.url(QUrl::FullyEncoded |QUrl::RemoveScheme).toLatin1()); QByteArrayView data = dataArray;// parse it:const qsizetype pos = data.indexOf(',');if(pos != -1) { payload = data.mid(pos +1).toByteArray(); data.truncate(pos); data = data.trimmed();// find out if the payload is encoded in Base64constexpr auto base64 =";base64"_L1;if(QLatin1StringView{data}.endsWith(base64,Qt::CaseInsensitive)) { payload =QByteArray::fromBase64(payload); data.chop(base64.size());} QLatin1StringView textPlain;constexpr auto charset ="charset"_L1;if(QLatin1StringView{data}.startsWith(charset,Qt::CaseInsensitive)) { QByteArrayView copy = data.sliced(charset.size());while(copy.startsWith(' ')) copy.slice(1);if(copy.startsWith('=')) textPlain ="text/plain;"_L1;}if(!data.isEmpty()) mimeType = textPlain +QLatin1StringView(data.trimmed());}return true;} QT_END_NAMESPACE