31 lines
810 B
C++
31 lines
810 B
C++
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#include "byte_buffer_source.hpp"
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#include <algorithm>
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namespace vanetza
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{
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byte_buffer_source::byte_buffer_source(const ByteBuffer& buffer) :
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m_begin(buffer.cbegin()), m_end(buffer.cend()) {}
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byte_buffer_source::byte_buffer_source(range r) :
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m_begin(r.begin()), m_end(r.end()) {}
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byte_buffer_source::byte_buffer_source(iterator begin, iterator end) :
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m_begin(begin), m_end(end) {}
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std::streamsize byte_buffer_source::read(char_type* buf, std::streamsize n)
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{
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if (m_begin == m_end) {
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return -1;
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} else {
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std::streamsize remaining = std::distance(m_begin, m_end);
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std::streamsize consume = std::min(remaining, n);
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std::copy(m_begin, m_begin + consume, buf);
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std::advance(m_begin, consume);
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return consume;
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}
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}
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} // namespace vanetza
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