C++ (Cpp) ds_reserve Examples

Example #1

File: dynamic-string.c Project: 09beeihaq/Coursera-SDN-Assignments

void
ds_put_format_valist(struct ds *ds, const char *format, va_list args_)
{
    va_list args;
    size_t available;
    int needed;

    va_copy(args, args_);
    available = ds->string ? ds->allocated - ds->length + 1 : 0;
    needed = vsnprintf(&ds->string[ds->length], available, format, args);
    va_end(args);

    if (needed < available) {
        ds->length += needed;
    } else {
        size_t available;

        ds_reserve(ds, ds->length + needed);

        va_copy(args, args_);
        available = ds->allocated - ds->length + 1;
        needed = vsnprintf(&ds->string[ds->length], available, format, args);
        va_end(args);

        assert(needed < available);
        ds->length += needed;
    }
}

Example #2

File: dynamic-string.c Project: 09beeihaq/Coursera-SDN-Assignments

char *
ds_put_uninit(struct ds *ds, size_t n)
{
    ds_reserve(ds, ds->length + n);
    ds->length += n;
    ds->string[ds->length] = '\0';
    return &ds->string[ds->length - n];
}

Example #3

File: packets.c Project: mashoujiang/openvswitch_1.4.6_v4v6

void
print_ipv6_addr(struct ds *string, const struct in6_addr *addr)
{
    char *dst;

    ds_reserve(string, string->length + INET6_ADDRSTRLEN);

    dst = string->string + string->length;
    format_ipv6_addr(dst, addr);
    string->length += strlen(dst);
}

Example #4

File: dynamic-string.c Project: 09beeihaq/Coursera-SDN-Assignments

void
ds_put_printable(struct ds *ds, const char *s, size_t n) 
{
    ds_reserve(ds, ds->length + n);
    while (n-- > 0) {
        unsigned char c = *s++;
        if (c < 0x20 || c > 0x7e || c == '\\' || c == '"') {
            ds_put_format(ds, "\\%03o", (int) c);
        } else {
            ds_put_char(ds, c);
        }
    }
}