70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
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Create a stream from a buffer.
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Copyright (C) 2019, Guillaume Gonnet
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This program is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <streambuf>
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#include <memory>
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namespace maconv {
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namespace utils {
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// A stream buffer from raw memory data.
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struct RawDataStreamBuf : std::streambuf {
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RawDataStreamBuf() = default;
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RawDataStreamBuf(uint8_t *data, uint32_t length);
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// Set the data and length for this stream buffer.
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void SetData(uint8_t *data, uint32_t length);
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protected:
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// Get the number of characters available for input.
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std::streamsize showmanyc() override;
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// Set the position indicator relative to some other position.
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pos_type seekoff(off_type off, std::ios_base::seekdir dir,
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std::ios_base::openmode which) override;
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// Set the position indicator to an absolute position.
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pos_type seekpos(pos_type pos, std::ios_base::openmode which) override;
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// Read count characters from the input sequence.
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std::streamsize xsgetn(char *p, std::streamsize n) override;
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// Write count characters to the output sequence.
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std::streamsize xsputn(const char *s, std::streamsize n) override;
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};
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// A stream buffer from a buffer.
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struct BufferStreamBuf : RawDataStreamBuf {
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BufferStreamBuf(uint32_t length);
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std::unique_ptr<uint8_t[]> buffer;
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};
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} // namespace utils
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} // namespace maconv
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