извлечь токен из строки (extract token from string)
Имя (Name)
strsep - extract token from string
Синопсис (Synopsis)
#include <string.h>
char *strsep(char **restrict stringp, const char *restrict delim);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
strsep():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_BSD_SOURCE
Описание (Description)
If *stringp is NULL, the strsep() function returns NULL and does
nothing else. Otherwise, this function finds the first token in
the string *stringp, that is delimited by one of the bytes in the
string delim. This token is terminated by overwriting the
delimiter with a null byte ('\0'), and *stringp is updated to
point past the token. In case no delimiter was found, the token
is taken to be the entire string *stringp, and *stringp is made
NULL.
Возвращаемое значение (Return value)
The strsep() function returns a pointer to the token, that is, it
returns the original value of *stringp.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│strsep() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
4.4BSD.
Примечание (Note)
The strsep() function was introduced as a replacement for
strtok(3), since the latter cannot handle empty fields. However,
strtok(3) conforms to C89/C99 and hence is more portable.
Ошибки (баги) (Bugs)
Be cautious when using this function. If you do use it, note
that:
* This function modifies its first argument.
* This function cannot be used on constant strings.
* The identity of the delimiting character is lost.
Смотри также (See also)
index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3),
strspn(3), strstr(3), strtok(3)
