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56 lines
2.0 KiB
56 lines
2.0 KiB
5 years ago
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/**
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* Strcat variant respecting buffer capacity.
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* Function signatures based on libbsd.
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*
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* Created by Ondřej Hruška on 2020/09/19.
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*/
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#ifndef STRLCAT_H
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#define STRLCAT_H
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#include <stddef.h>
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/**
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* Append a zero-terminated to a zero-terminated buffer.
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*
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* @param[out] dst - destination buffer
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* @param[in] src - source string
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* @param[in] capacity - destination buffer capacity
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* @return The buffer size needed. If > size, then data loss occurred. Returns 0 if invalid arguments were supplied.
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*/
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size_t strlcat(char *__restrict__ dst, const char *__restrict__ src, size_t capacity);
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/**
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* Append at most N characters of a zero-terminated string to a zero-terminated buffer.
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*
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* @param[out] dst - destination buffer
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* @param[in] src - source string
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* @param[in] capacity - destination buffer capacity
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* @param[in] num - number of bytes to write
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* @return The buffer size needed. If > size, then data loss occurred. Returns 0 if invalid arguments were supplied.
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*/
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size_t strlncat(char *__restrict__ dst, const char *__restrict__ src, size_t capacity, size_t num);
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/**
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* Copy a zero-terminated string to a zero-terminated buffer.
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*
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* @param[out] dst - destination buffer
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* @param[in] src - source string
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* @param[in] capacity - destination buffer capacity
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* @return The buffer size needed. If > size, then data loss occurred. Returns 0 if invalid arguments were supplied.
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*/
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size_t strlcpy(char *__restrict__ dst, const char *__restrict__ src, size_t capacity);
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/**
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* Copy at most N characters of a zero-terminated string to a zero-terminated buffer.
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*
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* @param[out] dst - destination buffer
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* @param[in] src - source string
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* @param[in] capacity - destination buffer capacity
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* @param[in] num - number of bytes to write
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* @return The buffer size needed. If > size, then data loss occurred. Returns 0 if invalid arguments were supplied.
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*/
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size_t strlncpy(char *__restrict__ dst, const char *__restrict__ src, size_t capacity, size_t num);
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#endif //STRLCAT_H
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