50 lines
894 B
C
50 lines
894 B
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause
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*/
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#ifndef CESCAL_READBUF_H
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#define CESCAL_READBUF_H 1
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#include <sys/types.h>
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#include <stdint.h>
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#include <stddef.h>
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#define READBUF_CAP 128
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/*
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* Represents a read buffer that reduces system call
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* overhead.
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*
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* @buf: Read buffer
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* @size: Total populated size of offer
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* @tail: Tail pointer from start of buffer
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*/
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struct readbuf {
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char buf[READBUF_CAP];
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size_t size;
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size_t tail;
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};
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/*
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* Initialize a read buffer
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*
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* @rb: Readbuffer to initialize
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*
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* Returns zero on success
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*/
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int readbuf_init(struct readbuf *rb);
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/*
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* Read from a read buffer and populate if needed
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*
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* @rb: Target readbuffer
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* @fd: File descriptor to read from
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*
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* Returns the character read on success, '\0' on
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* failure.
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*/
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char readbuf_read(struct readbuf *rb, int fd);
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#endif /* !CESCAL_READBUF_H */
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