strtrimsp - trim leading and/or trailing whitespace from a string
# include <begemot.h>
void strtrimsp(char **pstr, int which);
This function trims whitespace from the string pointed to by *pstr.
pstr is a pointer to the string pointer. The string pointer may be
changed by the function, if leading whitespace is removed. If which is
0, only leading whitespace is removed, if which is 1, only trailing
whitespace is removed. For all other values of which both ends are
trimmed. Whitespaceness is determined by isspace(3).