trim strings

trim.js

inline char* ltrim(char* const s)
{
    int len;
    char* cur;

    if(s && *s)
    {
        len = strlen(s);
        cur = s;

        while(*cur && isspace(*cur))
            ++cur, --len;

        if(s != cur)
            memmove(s, cur, len + 1);
    }

    return s;
}

inline char* rtrim(char* const s)
{
    int len;
    char* cur;

    if(s && *s)
    {
        len = strlen(s);
        cur = s + len - 1;

        while(cur != s && isspace(*cur))
            --cur, --len;

        cur[isspace(*cur) ? 0 : 1] = '\0';
    }

    return s;
}

inline char* trim(char* const s)
{
    rtrim(s);
    ltrim(s);
    return s;
}