strtok_r
parses the string
s into tokens.
[1]
The first call to strtok_r
should have
s as its first argument. Subsequent calls
should have the first argument set to NULL. Each
call returns a pointer to the next token, or
NULL when no more tokens are found.
If a token ends with a delimiter, this delimiting character is
overwritten with a \0 and a pointer to the next
character is saved for the next call to
strtok_r
. The delimiter string
delim may be different for each call.
ptrptr is a user allocated char* pointer. It shall be the same while parsing the same string.
Never use this function. Note that:
It modifies its first argument.
The identity of the delimiting character is lost.
It cannot be used on constant strings.
[1] | A token is a nonempty string of characters not occurring in the string delim, followed by \0 or by a character occurring in delim. |