diff options
Diffstat (limited to 'include/string.h')
| -rw-r--r-- | include/string.h | 443 |
1 files changed, 334 insertions, 109 deletions
diff --git a/include/string.h b/include/string.h index 4191f7ba1..3c03c7cee 100644 --- a/include/string.h +++ b/include/string.h @@ -1,141 +1,144 @@ +/* Copyright (C) 1991,92,93,95,96,97,98,99,2000,2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. -#ifndef __STRING_H -#define __STRING_H -#include <features.h> -#include <sys/types.h> -#include <stddef.h> + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. -__BEGIN_DECLS -/* Basic string functions */ + 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 + Lesser General Public License for more details. -/* Return the length of S. */ -extern size_t strlen __P ((__const char *__s)); -/* Append SRC onto DEST. */ -extern char *strcat __P ((char *__restrict __dest, - __const char *__restrict __src)); -/* Append no more than N characters from SRC onto DEST. */ -extern char *strncat __P ((char *__restrict __dest, - __const char *__restrict __src, size_t __n)); + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ -/* Copy SRC to DEST. */ -extern char *strcpy __P ((char *__restrict __dest, - __const char *__restrict __src)); -extern char *stpcpy __P ((char *__restrict __dest, - __const char *__restrict __src)); -extern char *stpncpy __P ((char *__restrict __dest, - __const char *__restrict __src, size_t __n)); -/* Copy no more than N characters of SRC to DEST. */ -extern char *strncpy __P ((char *__restrict __dest, - __const char *__restrict __src, size_t __n)); +/* + * ISO C99 Standard: 7.21 String handling <string.h> + */ -/* 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)); +#ifndef _STRING_H +#define _STRING_H 1 -/* 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)); -/* Duplicate S, returning an identical malloc'd string. */ -extern char *strdup __P ((__const char *__s)); +#include <features.h> + +__BEGIN_DECLS + +/* Get size_t and NULL from <stddef.h>. */ +#define __need_size_t +#define __need_NULL +#include <stddef.h> -/* Basic mem functions */ /* Copy N bytes of SRC to DEST. */ -extern __ptr_t memcpy __P ((__ptr_t __restrict __dest, - __const __ptr_t __restrict __src, size_t __n)); +extern void *memcpy (void *__restrict __dest, + __const void *__restrict __src, size_t __n) __THROW; +/* Copy N bytes of SRC to DEST, guaranteeing + correct behavior for overlapping strings. */ +extern void *memmove (void *__dest, __const void *__src, size_t __n) + __THROW; + /* 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)); -/* Search N bytes of S for C. */ -extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n)); +#if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN +extern void *memccpy (void *__restrict __dest, __const void *__restrict __src, + int __c, size_t __n) + __THROW; +#endif /* SVID. */ + + /* Set N bytes of S to C. */ -extern __ptr_t memset __P ((__ptr_t __s, int __c, size_t __n)); +extern void *memset (void *__s, int __c, size_t __n) __THROW; + /* Compare N bytes of S1 and S2. */ -extern int memcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2, - 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)); +extern int memcmp (__const void *__s1, __const void *__s2, size_t __n) + __THROW __attribute_pure__; +/* Search N bytes of S for C. */ +extern void *memchr (__const void *__s, int __c, size_t __n) + __THROW __attribute_pure__; -/* Minimal (very!) locale support */ -extern int strcoll __P ((__const char *__s1, __const char *__s2)); -extern size_t strxfrm __P ((char *__restrict __dest, - __const char *__restrict __src, size_t __n)); +#if 0 +//#ifdef __USE_GNU +/* Search in S for C. This is similar to `memchr' but there is no + length limit. */ +extern void *rawmemchr (__const void *__s, int __c) __THROW __attribute_pure__; -/* BSDisms */ -extern char *index __P ((__const char *__s, int __c)); -extern char *rindex __P ((__const char *__s, int __c)); +/* Search N bytes of S for the final occurrence of C. */ +extern void *memrchr (__const void *__s, int __c, size_t __n) + __THROW __attribute_pure__; +#endif -/* 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)) __attribute__ ((const)); -/* Other common BSD functions */ -/* Set N bytes of S to 0. */ -extern void bzero __P ((__ptr_t __s, size_t __n)); -/* 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)); +/* Copy SRC to DEST. */ +extern char *strcpy (char *__restrict __dest, __const char *__restrict __src) + __THROW; +/* Copy no more than N characters of SRC to DEST. */ +extern char *strncpy (char *__restrict __dest, + __const char *__restrict __src, size_t __n) __THROW; -/* Compare S1 and S2, ignoring case. */ -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)); -/* Find the first occurrence in S of any character in ACCEPT. */ -extern char *strpbrk __P ((__const char *__s, __const char *__accept)); -/* 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 **__restrict __stringp, - __const char *__restrict __delim)); -/* Find the first occurrence of NEEDLE in HAYSTACK. */ -extern char *strstr __P ((__const char *__haystack, __const char *__needle)); -extern char *strcasestr __P((__const char *__haystack, __const char *__needle)); -/* Divide S into tokens separated by characters in DELIM. */ -extern char *strtok __P ((char *__restrict __s, - __const char *__restrict __delim)); -/* Divide S into tokens separated by characters in DELIM. Information - passed between calls are stored in SAVE_PTR. */ -extern char *__strtok_r __P ((char *__restrict __s, - __const char *__restrict __delim, - char **__restrict __save_ptr)); -#if defined __USE_POSIX || defined __USE_MISC -extern char *strtok_r __P ((char *__restrict __s, - __const char *__restrict __delim, - char **__restrict __save_ptr)); -#endif -/* 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)); +/* Append SRC onto DEST. */ +extern char *strcat (char *__restrict __dest, __const char *__restrict __src) + __THROW; +/* Append no more than N characters from SRC onto DEST. */ +extern char *strncat (char *__restrict __dest, __const char *__restrict __src, + size_t __n) __THROW; -/* Return a string describing the meaning of the signal number in SIG. */ -extern char *strsignal __P ((int __sig)); +/* Compare S1 and S2. */ +extern int strcmp (__const char *__s1, __const char *__s2) + __THROW __attribute_pure__; +/* Compare N characters of S1 and S2. */ +extern int strncmp (__const char *__s1, __const char *__s2, size_t __n) + __THROW __attribute_pure__; -/* More BSD compatabilty */ -extern int bcmp(const void *s1, const void *s2, size_t n); +/* Compare the collated forms of S1 and S2. */ +extern int strcoll (__const char *__s1, __const char *__s2) + __THROW __attribute_pure__; +/* Put a transformation of SRC into no more than N bytes of DEST. */ +extern size_t strxfrm (char *__restrict __dest, + __const char *__restrict __src, size_t __n) __THROW; -/* Linux silly hour */ -char *strfry __P ((char *)); +#if 0 +//#ifdef __USE_GNU +/* The following functions are equivalent to the both above but they + take the locale they use for the collation as an extra argument. + This is not standardsized but something like will come. */ +# include <xlocale.h> -/* 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)); +/* Compare the collated forms of S1 and S2 using rules from L. */ +extern int __strcoll_l (__const char *__s1, __const char *__s2, __locale_t __l) + __THROW __attribute_pure__; +/* Put a transformation of SRC into no more than N bytes of DEST. */ +extern size_t __strxfrm_l (char *__dest, __const char *__src, size_t __n, + __locale_t __l) __THROW; +#endif + +#if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED +/* Duplicate S, returning an identical malloc'd string. */ +extern char *strdup (__const char *__s) __THROW __attribute_malloc__; +#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]. */ +#if 0 +//#if defined __USE_GNU +extern char *strndup (__const char *__string, size_t __n) + __THROW __attribute_malloc__; +#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); \ + char *__new = (char *) __builtin_alloca (__len); \ (char *) memcpy (__new, __old, __len); \ })) @@ -145,11 +148,233 @@ extern size_t strnlen __P ((__const char *__string, size_t __maxlen)); ({ \ __const char *__old = (s); \ size_t __len = strnlen (__old, (n)); \ - char *__new = __builtin_alloca (__len + 1); \ + char *__new = (char *) __builtin_alloca (__len + 1); \ __new[__len] = '\0'; \ (char *) memcpy (__new, __old, __len); \ })) +#endif + +/* Find the first occurrence of C in S. */ +extern char *strchr (__const char *__s, int __c) __THROW __attribute_pure__; +/* Find the last occurrence of C in S. */ +extern char *strrchr (__const char *__s, int __c) __THROW __attribute_pure__; + +#if 0 +//#ifdef __USE_GNU +/* This funciton is similar to `strchr'. But it returns a pointer to + the closing NUL byte in case C is not found in S. */ +extern char *strchrnul (__const char *__s, int __c) __THROW __attribute_pure__; +#endif + +/* Return the length of the initial segment of S which + consists entirely of characters not in REJECT. */ +extern size_t strcspn (__const char *__s, __const char *__reject) + __THROW __attribute_pure__; +/* Return the length of the initial segment of S which + consists entirely of characters in ACCEPT. */ +extern size_t strspn (__const char *__s, __const char *__accept) + __THROW __attribute_pure__; +/* Find the first occurrence in S of any character in ACCEPT. */ +extern char *strpbrk (__const char *__s, __const char *__accept) + __THROW __attribute_pure__; +/* Find the first occurrence of NEEDLE in HAYSTACK. */ +extern char *strstr (__const char *__haystack, __const char *__needle) + __THROW __attribute_pure__; + +#ifdef __USE_GNU +/* Similar to `strstr' but this function ignores the case of both strings. */ +extern char *strcasestr (__const char *__haystack, __const char *__needle) + __THROW __attribute_pure__; +#endif + +/* Divide S into tokens separated by characters in DELIM. */ +extern char *strtok (char *__restrict __s, __const char *__restrict __delim) + __THROW; + +/* Divide S into tokens separated by characters in DELIM. Information + passed between calls are stored in SAVE_PTR. */ +extern char *__strtok_r (char *__restrict __s, + __const char *__restrict __delim, + char **__restrict __save_ptr) __THROW; +#if defined __USE_POSIX || defined __USE_MISC +extern char *strtok_r (char *__restrict __s, __const char *__restrict __delim, + char **__restrict __save_ptr) __THROW; +#endif + +#if 0 +//#ifdef __USE_GNU +/* Find the first occurrence of NEEDLE in HAYSTACK. + NEEDLE is NEEDLELEN bytes long; + HAYSTACK is HAYSTACKLEN bytes long. */ +extern void *memmem (__const void *__haystack, size_t __haystacklen, + __const void *__needle, size_t __needlelen) + __THROW __attribute_pure__; + +/* Copy N bytes of SRC to DEST, return pointer to bytes after the + last written byte. */ +extern void *__mempcpy (void *__restrict __dest, + __const void *__restrict __src, size_t __n) __THROW; +extern void *mempcpy (void *__restrict __dest, + __const void *__restrict __src, size_t __n) __THROW; +#endif -__END_DECLS +/* Return the length of S. */ +extern size_t strlen (__const char *__s) __THROW __attribute_pure__; + +#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 (__const char *__string, size_t __maxlen) + __THROW __attribute_pure__; #endif + + +/* Return a string describing the meaning of the `errno' code in ERRNUM. */ +extern char *strerror (int __errnum) __THROW; +#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 (int __errnum, char *__buf, size_t __buflen) __THROW; +#endif + +/* We define this function always since `bzero' is sometimes needed when + the namespace rules does not allow this. */ +extern void __bzero (void *__s, size_t __n) __THROW; + +#if defined __USE_BSD +/* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ +extern void bcopy (__const void *__src, void *__dest, size_t __n) __THROW; + +/* Set N bytes of S to 0. */ +extern void bzero (void *__s, size_t __n) __THROW; + +/* Compare N bytes of S1 and S2 (same as memcmp). */ +extern int bcmp (__const void *__s1, __const void *__s2, size_t __n) + __THROW __attribute_pure__; + +/* Find the first occurrence of C in S (same as strchr). */ +extern char *index (__const char *__s, int __c) __THROW __attribute_pure__; + +/* Find the last occurrence of C in S (same as strrchr). */ +extern char *rindex (__const char *__s, int __c) __THROW __attribute_pure__; + +/* 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 (int __i) __THROW __attribute__ ((__const__)); + +/* The following two functions are non-standard but necessary for non-32 bit + platforms. */ +# if 0 +//# ifdef __USE_GNU +extern int ffsl (long int __l) __THROW __attribute__ ((__const__)); +# ifdef __GNUC__ +__extension__ extern int ffsll (long long int __ll) + __THROW __attribute__ ((__const__)); +# endif +# endif + +/* Compare S1 and S2, ignoring case. */ +extern int strcasecmp (__const char *__s1, __const char *__s2) + __THROW __attribute_pure__; + +/* Compare no more than N chars of S1 and S2, ignoring case. */ +extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n) + __THROW __attribute_pure__; +#endif /* Use BSD. */ + +#if 0 +//#ifdef __USE_GNU +/* Again versions of a few functions which use the given locale instead + of the global one. */ +extern int __strcasecmp_l (__const char *__s1, __const char *__s2, + __locale_t __loc) __THROW __attribute_pure__; + +extern int __strncasecmp_l (__const char *__s1, __const char *__s2, + size_t __n, __locale_t __loc) + __THROW __attribute_pure__; +#endif + +#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 (char **__restrict __stringp, + __const char *__restrict __delim) __THROW; +#endif + +#ifdef __USE_GNU +#if 0 +/* Compare S1 and S2 as strings holding name & indices/version numbers. */ +extern int strverscmp (__const char *__s1, __const char *__s2) + __THROW __attribute_pure__; +#endif + +/* Return a string describing the meaning of the signal number in SIG. */ +extern char *strsignal (int __sig) __THROW; + +#if 0 +/* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */ +extern char *__stpcpy (char *__restrict __dest, __const char *__restrict __src) + __THROW; +extern char *stpcpy (char *__restrict __dest, __const char *__restrict __src) + __THROW; +#endif + +/* Copy no more than N characters of SRC to DEST, returning the address of + the last character written into DEST. */ +extern char *__stpncpy (char *__restrict __dest, + __const char *__restrict __src, size_t __n) __THROW; +extern char *stpncpy (char *__restrict __dest, + __const char *__restrict __src, size_t __n) __THROW; + +#if 0 +/* Sautee STRING briskly. */ +extern char *strfry (char *__string) __THROW; + +/* Frobnicate N bytes of S. */ +extern void *memfrob (void *__s, size_t __n) __THROW; +#endif + +# ifndef basename +/* Return the file name within directory of FILENAME. We don't + declare the function if the `basename' macro is available (defined + in <libgen.h>) which makes the XPG version of this function + available. */ +extern char *basename (__const char *__filename) __THROW; +# endif +#endif + +#if 0 +#if defined __GNUC__ && __GNUC__ >= 2 +# if defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \ + && !defined __NO_INLINE__ && !defined __cplusplus +/* When using GNU CC we provide some optimized versions of selected + functions from this header. There are two kinds of optimizations: + + - machine-dependent optimizations, most probably using inline + assembler code; these might be quite expensive since the code + size can increase significantly. + These optimizations are not used unless the symbol + __USE_STRING_INLINES + is defined before including this header. + + - machine-independent optimizations which do not increase the + code size significantly and which optimize mainly situations + where one or more arguments are compile-time constants. + These optimizations are used always when the compiler is + taught to optimize. + + One can inhibit all optimizations by defining __NO_STRING_INLINES. */ + +/* Get the machine-dependent optimizations (if any). */ +# include <bits/string.h> + +/* These are generic optimizations which do not add too much inline code. */ +# include <bits/string2.h> +# endif +#endif +#endif + +__END_DECLS + +#endif /* string.h */ |