121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
#ifndef __STRING_H__
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# define __STRING_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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/* Copying functions. */
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/* Copy __n characters from __src to __dest (overlap not allowed). */
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extern void *memcpy(void *__dest, void const *__src, size_t __n);
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/* Copy __n characters from __src to __dest (overlap allowed). */
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extern void *memmove(void *__dest, void const *__src, size_t __n);
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/* Copy string __src into __dest. */
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extern char *strcpy(char *__restrict__ __dest, char const *__restrict__ __src);
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/* Copy at most __n characters of __src into __dest. */
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extern char *strncpy(char * __restrict__ __dest,
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char const * __restrict__ __src, size_t __n);
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/* Concatenation functions. */
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/* Copy __src at the end of __dest. */
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extern char *strcat(char *__restrict__ __dest, char const *__restrict__ __src);
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/* Copy at most __n characters of __src into __dest. */
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extern char *strncat(char * __restrict__ __dest,
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char const * __restrict__ __src, size_t __n);
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/* Comparison functions. */
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/* Compare __n characters from __s1 and __s2. */
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extern int memcmp(void const *__s1, void const *__s2, size_t __n);
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/* Compare __s1 and __s2 as strings. */
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extern int strcmp(char const *__s1, char const *__s2);
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/* Compare __s1 and __s2 with locale-dependent collation rules. */
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extern int strcoll(char const *__s1, char const *__s2);
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/* Compare at most __n characters of __s1 and __s2. */
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extern int strncmp(char const *__s1, char const *__s2, size_t __n);
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/* Transform __src into __dest in a way that morphs strcoll into strcmp. */
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extern size_t strxfrm(char * __restrict__ __dest,
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char const * __restrict__ __src, size_t __n);
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/* Search functions. */
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/* Search __c within the first __n characters of __s. */
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extern void *memchr(void const *__s, int __c, size_t __n);
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/* Find the first occurrence of __c within __s. */
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extern char *strchr(char const *__s, int __c);
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/* Count initial characters of __s that are not in __exclude. */
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extern size_t strcspn(char const *__s, char const *__exclude);
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/* Find the first character of __s that is also in __include. */
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extern char *strpbrk(char const *__s, char const *__include);
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/* Find the last occurrence of __c within __s. */
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extern char *strrchr(char const *__s, int __c);
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/* Count initial characters of __s that are in __include. */
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extern size_t strspn(char const *__s, char const *__include);
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/* Find the first occurrence of __s2 as a substring of __s1. */
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extern char *strstr(char const *__s1, char const *__s2);
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/* Break __s into tokens delimited by characters from __separators. */
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extern char *strtok(char * __restrict__ __s, char const * __restrict__ __seps);
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/* Miscellaneous functions. */
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/* Fill the __n first bytes of __s with character __c. */
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extern void *memset(void *__s, int __c, size_t __n);
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/* Returns a string that describes the errno value __errnum. */
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extern char *strerror(int __errnum);
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/* Length of __s. */
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extern size_t strlen(char const *__s);
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/*
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** Extensions
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*/
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/* The following functions are not specified by C99, but convenient. */
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/* Minimum of __n and the length of __s. */
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extern size_t strnlen(char const *__s, size_t __n);
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/* Like strchr, but returns the end of __s if __c is not found. */
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extern char *strchrnul(char const *__s, int __c);
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/* Compare __s1 and __s2 case-insensitively. */
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extern int strcasecmp(char const *__s1, char const *__s2);
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/* Compare at most __n characters of __s1 and __s2 case-insensitively. */
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extern int strncasecmp(char const *__s1, char const *__s2, size_t __n);
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/* Find __needle in __haystack, ignoring case. */
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extern char *strcasestr(char const *__haystack, char const *__needle);
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/* Duplicate __s with malloc. */
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extern char *strdup(char const *__s);
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/* Duplicate at most __n characters of __s with malloc. */
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extern char *strndup(char const *__s, size_t __n);
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#ifdef __cplusplus
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}
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#endif
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#endif /*__STRING_H__*/
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