Luna/libluna/include/luna/Format.h

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#pragma once
#include <luna/Attributes.h>
#include <luna/Result.h>
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#include <stdarg.h>
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typedef Result<void> (*callback_t)(char, void*);
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// Format output according to a format string and a list of variadic arguments. callback is called with arg for every
// character in the resulting string.
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Result<usize> cstyle_format(const char* format, callback_t callback, void* arg, va_list ap);
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// Convenience function which outputs into a fixed-size buffer (not unlike vsnprintf)
usize vstring_format(char* buf, usize max, const char* format, va_list ap);
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// Convenience function which outputs into a fixed-size buffer (not unlike snprintf)
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usize string_format(char* buf, usize max, const char* format, ...) _format(3, 4);