65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
#pragma once
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#include <istream>
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#include "util/Buffer.hpp"
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class memory_streambuf : public std::streambuf {
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public:
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explicit memory_streambuf(util::Buffer<char> buffer)
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: buffer(std::move(buffer)) {
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char* base = this->buffer.data();
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char* end = base + this->buffer.size();
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setg(base, base, end);
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}
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memory_streambuf(const memory_streambuf&) = delete;
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memory_streambuf& operator=(const memory_streambuf&) = delete;
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protected:
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int_type underflow() override {
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return traits_type::eof();
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}
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private:
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util::Buffer<char> buffer;
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};
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class memory_istream : public std::istream {
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public:
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explicit memory_istream(util::Buffer<char> buffer)
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: std::istream(&buf), buf(std::move(buffer)) {}
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private:
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memory_streambuf buf;
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};
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class memory_view_streambuf : public std::streambuf {
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public:
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explicit memory_view_streambuf(const util::Buffer<char>& buffer)
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: buffer(std::move(buffer)) {
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char* base = const_cast<char*>(this->buffer.data());
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char* end = base + this->buffer.size();
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setg(base, base, end);
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}
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memory_view_streambuf(const memory_view_streambuf&) = delete;
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memory_view_streambuf& operator=(const memory_view_streambuf&) = delete;
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protected:
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int_type underflow() override {
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return traits_type::eof();
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}
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private:
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const util::Buffer<char>& buffer;
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};
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class memory_view_istream : public std::istream {
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public:
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explicit memory_view_istream(const util::Buffer<char>& buffer)
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: std::istream(&buf), buf(buffer) {}
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private:
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memory_view_streambuf buf;
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};
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