Function vhost_alias_interpolate

modules/mappers/mod_vhost_alias.c:253–380

}

static void vhost_alias_interpolate(request_rec *r, const char *name,
                                    const char *map, const char *uri)
{
    /* 0..9 9..0 */
    enum { MAXDOTS = 19 };
    const char *dots[MAXDOTS+1];
    int ndots;

    char buf[HUGE_STRING_LEN];
    char *dest;
    const char *docroot;

    int N, M, Np, Mp, Nd, Md;
    const char *start, *end;

    const char *p;

    ndots = 0;
    dots[ndots++] = name-1; /* slightly naughty */
    for (p = name; *p; ++p) {
        if (*p == '.' && ndots < MAXDOTS) {
            dots[ndots++] = p;
        }
    }
    dots[ndots] = p;

    r->filename = NULL;

    dest = buf;
    while (*map) {
        if (*map != '%') {
            /* normal characters */
            vhost_alias_checkspace(r, buf, &dest, 1);
            *dest++ = *map++;
            continue;
        }
        /* we are in a format specifier */
        ++map;
        /* %% -> % */
        if (*map == '%') {
            ++map;
            vhost_alias_checkspace(r, buf, &dest, 1);
            *dest++ = '%';
            continue;
        }
        /* port number */
        if (*map == 'p') {
            ++map;
            /* no. of decimal digits in a short plus one */
            vhost_alias_checkspace(r, buf, &dest, 7);
            dest += apr_snprintf(dest, 7, "%d", ap_get_server_port(r));
            continue;
        }
        /* deal with %-N+.-M+ -- syntax is already checked */
        M = 0;   /* value */
        Np = Mp = 0; /* is there a plus? */
        Nd = Md = 0; /* is there a dash? */
        if (*map == '-') ++map, Nd = 1;