#include <unistd.h>

char *util_trim(char *str)
{
    char *end;

    while(isspace(*str))
        str++;

    if(*str == 0)
        return str;

    end = str + strlen(str) - 1;
    while(end > str && isspace(*end))
        end--;

    *(end+1) = 0;

    return str;
}