afb81b8278
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62 lines
1.3 KiB
C++
62 lines
1.3 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "webview/webview_data_stream_memory.h"
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namespace Webview {
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DataStreamFromMemory::DataStreamFromMemory(
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QByteArray data,
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std::string mime)
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: _data(data)
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, _mime(mime) {
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}
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std::int64_t DataStreamFromMemory::size() {
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return _data.size();
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}
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std::string DataStreamFromMemory::mime() {
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return _mime;
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}
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std::int64_t DataStreamFromMemory::seek(
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int origin,
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std::int64_t position) {
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const auto length = size();
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switch (origin) {
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case SEEK_SET:
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return (position >= 0 && position <= length)
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? ((_offset = position))
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: -1;
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case SEEK_CUR:
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return (_offset + position >= 0 && _offset + position <= length)
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? ((_offset += position))
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: -1;
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case SEEK_END:
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return (length + position >= 0 && position <= 0)
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? ((_offset = length + position))
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: -1;
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}
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return -1;
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}
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std::int64_t DataStreamFromMemory::read(
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void *buffer,
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std::int64_t requested) {
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if (requested < 0) {
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return -1;
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}
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const auto copy = std::min(std::int64_t(size() - _offset), requested);
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if (copy > 0) {
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memcpy(buffer, _data.constData() + _offset, copy);
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_offset += copy;
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}
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return copy;
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}
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} // namespace Webview
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