The following string utility functions to parse and generate messages are defined in the Webots C API.
#include <webots/utils/string.h>
char *wbu_string_strsep(char **stringp, const char *delim);
char *wbu_string_replace(char *value, char *before, char *after);parse and generate string messages
The wbu_string_strsep function locates, in the string referenced by the stringp pointer, the first occurrence of any character in the string delim.
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.
This function is an improvement of the standard strsep function in string.h where delimiter characters preceded by an escape character (backslash) are ignored.
The wbu_string_replace function returns a copy of the original string value where all the occurrences of the before substring are replaced with the after substring.
The returned string is allocated with malloc within the wbu_string_replace function and should be freed with free by the user when not needed anymore.