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/* Copyright (C) 1991, 92, 93, 95, 96, 97 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/*
* ISO C Standard: 4.11 STRING HANDLING <string.h>
*/
#ifndef _STRING_H
#define _STRING_H 1
#include <features.h>
__BEGIN_DECLS
/* Get size_t and NULL from <stddef.h>. */
#define __need_size_t
#define __need_NULL
#include <stddef.h>
/* Copy N bytes of SRC to DEST. */
extern __ptr_t memcpy __P ((__ptr_t __dest, __const __ptr_t __src,
size_t __n));
/* Copy N bytes of SRC to DEST, guaranteeing
correct behavior for overlapping strings. */
extern __ptr_t memmove __P ((__ptr_t __dest, __const __ptr_t __src,
size_t __n));
/* Copy no more than N bytes of SRC to DEST, stopping when C is found.
Return the position in DEST one byte past where C was copied,
or NULL if C was not found in the first N bytes of SRC. */
extern __ptr_t __memccpy __P ((__ptr_t __dest, __const __ptr_t __src,
int __c, size_t __n));
#if defined (__USE_SVID) || defined (__USE_BSD) || defined (__USE_XOPEN)
extern __ptr_t memccpy __P ((__ptr_t __dest, __const __ptr_t __src,
int __c, size_t __n));
#endif /* SVID. */
/* Set N bytes of S to C. */
extern __ptr_t memset __P ((__ptr_t __s, int __c, size_t __n));
/* Compare N bytes of S1 and S2. */
extern int memcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2,
size_t __n));
/* Search N bytes of S for C. */
extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n));
/* Copy SRC to DEST. */
extern char *strcpy __P ((char *__dest, __const char *__src));
/* Copy no more than N characters of SRC to DEST. */
extern char *strncpy __P ((char *__dest, __const char *__src, size_t __n));
/* Append SRC onto DEST. */
extern char *strcat __P ((char *__dest, __const char *__src));
/* Append no more than N characters from SRC onto DEST. */
extern char *strncat __P ((char *__dest, __const char *__src, size_t __n));
/* Compare S1 and S2. */
extern int strcmp __P ((__const char *__s1, __const char *__s2));
/* Compare N characters of S1 and S2. */
extern int strncmp __P ((__const char *__s1, __const char *__s2, size_t __n));
/* Compare the collated forms of S1 and S2. */
extern int strcoll __P ((__const char *__s1, __const char *__s2));
/* Put a transformation of SRC into no more than N bytes of DEST. */
extern size_t strxfrm __P ((char *__dest, __const char *__src, size_t __n));
#if defined(__USE_SVID) || defined(__USE_BSD) || defined(__USE_XOPEN_EXTENDED)
/* Duplicate S, returning an identical malloc'd string. */
extern char *__strdup __P ((__const char *__s));
extern char *strdup __P ((__const char *__s));
#endif
/* Return a malloc'd copy of at most N bytes of STRING. The
resultant string is terminated even if no null terminator
appears before STRING[N]. */
extern char *__strndup __P ((__const char *__string, size_t __n));
#if defined(__USE_GNU)
extern char *strndup __P ((__const char *__string, size_t __n));
#endif
#if defined (__USE_GNU) && defined (__GNUC__)
/* Duplicate S, returning an identical alloca'd string. */
#define strdupa(s) \
(__extension__ \
({ \
__const char *__old = (s); \
size_t __len = strlen (__old) + 1; \
char *__new = __builtin_alloca (__len); \
memcpy (__new, __old, __len); \
}))
/* Return an alloca'd copy of at most N bytes of string. */
#define strndupa(s, n) \
(__extension__ \
({ \
__const char *__old = (s); \
size_t __len = strnlen (__old, (n)); \
char *__new = __builtin_alloca (__len + 1); \
__new[__len] = '\0'; \
memcpy (__new, __old, __len); \
}))
#endif
/* Find the first occurrence of C in S. */
extern char *strchr __P ((__const char *__s, int __c));
/* Find the last occurrence of C in S. */
extern char *strrchr __P ((__const char *__s, int __c));
/* Return the length of the initial segment of S which
consists entirely of characters not in REJECT. */
extern size_t strcspn __P ((__const char *__s, __const char *__reject));
/* Return the length of the initial segment of S which
consists entirely of characters in ACCEPT. */
extern size_t strspn __P ((__const char *__s, __const char *__accept));
/* Find the first occurrence in S of any character in ACCEPT. */
extern char *strpbrk __P ((__const char *__s, __const char *__accept));
/* Find the first occurrence of NEEDLE in HAYSTACK. */
extern char *strstr __P ((__const char *__haystack, __const char *__needle));
/* Divide S into tokens separated by characters in DELIM. */
extern char *strtok __P ((char *__s, __const char *__delim));
#if defined __USE_POSIX || defined __USE_MISC
/* Divide S into tokens separated by characters in DELIM. Information
passed between calls are stored in SAVE_PTR. */
extern char *strtok_r __P ((char *__s, __const char *__delim,
char **__save_ptr));
#endif
#ifdef __USE_GNU
/* Find the first occurrence of NEEDLE in HAYSTACK.
NEEDLE is NEEDLELEN bytes long;
HAYSTACK is HAYSTACKLEN bytes long. */
extern __ptr_t memmem __P ((__const __ptr_t __haystack, size_t __haystacklen,
__const __ptr_t __needle, size_t __needlelen));
#endif
/* Return the length of S. */
extern size_t strlen __P ((__const char *__s));
#ifdef __USE_GNU
/* Find the length of STRING, but scan at most MAXLEN characters.
If no '\0' terminator is found in that many characters, return MAXLEN. */
extern size_t strnlen __P ((__const char *__string, size_t __maxlen));
#ifdef __OPTIMIZE__
extern __inline size_t
strnlen (__const char *__string, size_t __maxlen)
{
__const char *__end = (__const char *) memchr (__string, '\0', __maxlen);
return __end ? __end - __string : __maxlen;
}
#endif
#endif
/* Return a string describing the meaning of the `errno' code in ERRNUM. */
extern char *strerror __P ((int __errnum));
#ifdef __USE_MISC
/* Reentrant version of `strerror'. If a temporary buffer is required, at
most BUFLEN bytes of BUF will be used. */
extern char *__strerror_r __P ((int __errnum, char *__buf, size_t __buflen));
extern char *strerror_r __P ((int __errnum, char *__buf, size_t __buflen));
#endif
#if defined(__USE_BSD) || defined(__USE_XOPEN_EXTENDED)
/* Copy N bytes of SRC to DEST (like memmove, but args reversed). */
extern void bcopy __P ((__const __ptr_t __src, __ptr_t __dest, size_t __n));
/* Set N bytes of S to 0. */
extern void bzero __P ((__ptr_t __s, size_t __n));
/* Compare N bytes of S1 and S2 (same as memcmp). */
extern int bcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2, size_t __n));
/* Find the first occurrence of C in S (same as strchr). */
extern char *index __P ((__const char *__s, int __c));
/* Find the last occurrence of C in S (same as strrchr). */
extern char *rindex __P ((__const char *__s, int __c));
/* Return the position of the first bit set in I, or 0 if none are set.
The least-significant bit is position 1, the most-significant 32. */
extern int ffs __P ((int __i));
/* Compare S1 and S2, ignoring case. */
extern int __strcasecmp __P ((__const char *__s1, __const char *__s2));
extern int strcasecmp __P ((__const char *__s1, __const char *__s2));
/* Compare no more than N chars of S1 and S2, ignoring case. */
extern int __strncasecmp __P ((__const char *__s1, __const char *__s2,
size_t __n));
extern int strncasecmp __P ((__const char *__s1, __const char *__s2,
size_t __n));
#endif /* Use BSD or X/Open Unix. */
#ifdef __USE_BSD
/* Return the next DELIM-delimited token from *STRINGP,
terminating it with a '\0', and update *STRINGP to point past it. */
extern char *__strsep __P ((char **__stringp, __const char *__delim));
extern char *strsep __P ((char **__stringp, __const char *__delim));
#endif
#ifdef __USE_GNU
/* Return a string describing the meaning of the signal number in SIG. */
extern char *strsignal __P ((int __sig));
/* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */
extern char *__stpcpy __P ((char *__dest, __const char *__src));
extern char *stpcpy __P ((char *__dest, __const char *__src));
/* Copy no more than N characters of SRC to DEST, returning the address of
the last character written into DEST. */
extern char *__stpncpy __P ((char *__dest, __const char *__src, size_t __n));
extern char *stpncpy __P ((char *__dest, __const char *__src, size_t __n));
/* Sautee STRING briskly. */
extern char *strfry __P ((char *__string));
/* Frobnicate N bytes of S. */
extern __ptr_t memfrob __P ((__ptr_t __s, size_t __n));
#endif
#ifdef __USE_MISC
/* Return the file name within directory of FILENAME. */
extern char *basename __P ((__const char *__filename));
#endif
__END_DECLS
#endif /* string.h */
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