strsep: extrahovat token z řetězce

Originální popis anglicky: strsep - extract token from string

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <string.h>
 
char *strsep(char **stringp, const char *delim);

POPIS / INSTRUKCE

If * stringp is NULL, the strsep() function returns NULL and does nothing else. Otherwise, this function finds the first token in the string * stringp, where tokens are delimited by symbols in the string delim. This token is terminated with a `\0' character (by overwriting the delimiter) 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.

NÁVRATOVÁ HODNOTA

The strsep() function returns a pointer to the token, that is, it returns the original value of * stringp.

NOTES

The strsep() function was introduced as a replacement for strtok(), since the latter cannot handle empty fields. However, strtok() conforms to ANSI-C and hence is more portable.

BUGS

This function suffers from the same problems as strtok(). In particular, it modifies the original string. Avoid it.

ODPOVÍDAJÍCÍ

BSD 4.4

SOUVISEJÍCÍ

index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strspn(3), strstr(3), strtok(3)