mirror of
https://github.com/cahirwpz/libnix.git
synced 2025-12-08 14:58:56 +00:00
36 lines
866 B
C
36 lines
866 B
C
/*
|
|
* Get next token from string *stringp, where tokens are nonempty
|
|
* strings separated by characters from delim.
|
|
*
|
|
* Writes NULs into the string at *stringp to end tokens.
|
|
* delim need not remain constant from call to call.
|
|
* On return, *stringp points past the last NUL written (if there might
|
|
* be further tokens), or is NULL (if there are definitely no more tokens).
|
|
*
|
|
* If *stringp is NULL, strsep returns NULL.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
char *strsep(char **stringp, const char *delim)
|
|
{ char *s,*tok;
|
|
|
|
if ((tok=*stringp))
|
|
for (s=tok;;) {
|
|
const char *spanp=delim;
|
|
int sc,c=*s++;
|
|
do {
|
|
if ((sc = *spanp++) == c) {
|
|
if (c)
|
|
s[-1] = 0;
|
|
else
|
|
s = NULL;
|
|
tok = *stringp;
|
|
*stringp = s;
|
|
return tok;
|
|
}
|
|
} while (sc != 0);
|
|
}
|
|
return tok;
|
|
}
|