block.hpp File Reference

#include <cassert>
#include <cerrno>
#include <concepts>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <optional>
#include <span>
#include <string_view>
#include <type_traits>

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Concepts
concept	ProcessingFunc
	Processes an input buffer.

Functions
std::optional< std::size_t >	read_all (FILE *f, std::size_t size, std::span< char > s)
	Reads a block of a specific size.
bool	write_all (FILE *f, std::string_view s)
	Writes the entire content of s into an output stream.
bool	process_blocks (FILE *in, FILE *out, std::size_t size, std::span< char > in_s, std::span< char > out_s, ProcessingFunc auto f)
	Reads block of a specific size, processes them, and outputs.

Function Documentation

process_blocks()

bool process_blocks ( FILE * in, FILE * out, std::size_t size, std::span< char > in_s, std::span< char > out_s, ProcessingFunc auto f )

inline

Reads block of a specific size, processes them, and outputs.

Blocks of size are read from in, processed through f, and written to out. in_s and out_s are used as storage.

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read_all()

std::optional< std::size_t > read_all ( FILE * f, std::size_t size, std::span< char > s )

inline

Reads a block of a specific size.

Fills s with data read from f. Reads until the buffer is filled or EOF, in which case the buffer will be filled with zeroes until it is a multiple of size in length. s must also be a multiple of size in length. Returns the number of bytes read without the added zeroes, or nullopt in case of errors..

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write_all()

bool write_all ( FILE * f, std::string_view s )

inline

Writes the entire content of s into an output stream.

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