51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#pragma once
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#include "./file2.hpp"
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#include <fstream>
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// std fstream backed files
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// write steam file
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// no preallocation required, but seeking is disabled
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struct File2WFile : public File2I {
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std::fstream _file;
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// dont truncate by default
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File2WFile(std::string_view file_path, bool trunc = false);
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virtual ~File2WFile(void) {}
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bool isGood(void) override;
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bool write(const ByteSpan data, int64_t pos = -1) override;
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std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
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};
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// read write, requires an existing file, file size is fixed
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struct File2RWFile : public File2I {
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std::fstream _file;
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// dont truncate by default
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// pass -1 for fetching the size from file
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File2RWFile(std::string_view file_path, uint64_t file_size = -1, bool trunc = false);
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virtual ~File2RWFile(void) {}
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bool isGood(void) override;
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bool write(const ByteSpan data, int64_t pos = -1) override;
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std::variant<ByteSpan, std::vector<uint8_t>> read(uint64_t size, int64_t pos = -1) override;
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};
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// cut down interface (write disabled)
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// TODO: remove
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struct File2RFile : public File2RWFile {
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File2RFile(std::string_view file_path) : File2RWFile(file_path) {}
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virtual ~File2RFile(void) {}
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using File2RWFile::isGood;
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using File2RWFile::read;
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bool write(const ByteSpan, int64_t = -1) override { return false; }
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};
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