tb_void_t tb_sha_spak(tb_sha_t* sha, tb_byte_t const* data, tb_size_t size)
{
// check
tb_assert_and_check_return(sha && data);
// update count
tb_uint32_t j = (tb_uint32_t)sha->count & 63;
sha->count += size;
// done
tb_uint32_t i;
#ifdef __tb_small__
for (i = 0; i < size; i++)
{
sha->buffer[j++] = data[i];
if (64 == j)
{
sha->transform(sha->state, sha->buffer);
j = 0;
}
}
#else
if ((j + size) > 63)
{
tb_memcpy(&sha->buffer[j], data, (i = 64 - j));
sha->transform(sha->state, sha->buffer);
for (; i + 63 < size; i += 64)
sha->transform(sha->state, &data[i]);
j = 0;
}
else i = 0;
tb_memcpy(&sha->buffer[j], &data[i], size - i);
#endif
}
tb_size_t tb_wcslcpy(tb_wchar_t* s1, tb_wchar_t const* s2, tb_size_t n)
{
// check
tb_assert_and_check_return_val(s1 && s2, 0);
// no size or same?
tb_check_return_val(n && s1 != s2, tb_wcslen(s1));
// copy
#if 0
tb_wchar_t const* s = s2; --n;
while (*s1 = *s2)
{
if (n)
{
--n;
++s1;
}
++s2;
}
return s2 - s;
#else
tb_size_t sn = tb_wcslen(s2);
tb_memcpy(s1, s2, tb_min(sn + 1, n) * sizeof(tb_wchar_t));
return tb_min(sn, n);
#endif
}
tb_wchar_t* tb_wcscpy(tb_wchar_t* s1, tb_wchar_t const* s2)
{
tb_assert_and_check_return_val(s1 && s2, tb_null);
__tb_register__ tb_wchar_t* s = s1;
if (s1 == s2) return s;
#if 1
tb_memcpy(s1, s2, (tb_wcslen(s2) + 1) * sizeof(tb_wchar_t));
#elif defined(__tb_small__)
while ((*s++ = *s2++)) ;
#else
while (1)
{
if (!(s1[0] = s2[0])) break;
if (!(s1[1] = s2[1])) break;
if (!(s1[2] = s2[2])) break;
if (!(s1[3] = s2[3])) break;
s1 += 4;
s2 += 4;
}
#endif
return s;
}
/*!the insertion sort
*
* <pre>
* old: 5 2 6 2 8 6 1
*
* (hole)
* step1: ((5)) 2 6 2 8 6 1
* (next) <=
*
* (hole)
* step2: ((2)) (5) 6 2 8 6 1
* (next) <=
*
* (hole)
* step3: 2 5 ((6)) 2 8 6 1
* (next) <=
*
* (hole)
* step4: 2 ((2)) (5) (6) 8 6 1
* (next) <=
*
* (hole)
* step5: 2 2 5 6 ((8)) 6 1
* (next) <=
*
* (hole)
* step6: 2 2 5 6 ((6)) (8) 1
* (next) <=
*
* (hole)
* step7: ((1)) (2) (2) (5) (6) (6) (8)
* (next)
* </pre>
*/
tb_void_t tb_insert_sort(tb_iterator_ref_t iterator, tb_size_t head, tb_size_t tail, tb_iterator_comp_t comp)
{
// check
tb_assert_and_check_return(iterator);
tb_assert_and_check_return((tb_iterator_mode(iterator) & TB_ITERATOR_MODE_FORWARD));
tb_assert_and_check_return((tb_iterator_mode(iterator) & TB_ITERATOR_MODE_REVERSE));
tb_check_return(head != tail);
// init
tb_size_t step = tb_iterator_step(iterator);
tb_pointer_t temp = step > sizeof(tb_pointer_t)? tb_malloc(step) : tb_null;
tb_assert_and_check_return(step <= sizeof(tb_pointer_t) || temp);
// the comparer
if (!comp) comp = tb_iterator_comp;
// sort
tb_size_t last, next;
for (next = tb_iterator_next(iterator, head); next != tail; next = tb_iterator_next(iterator, next))
{
// save next
if (step <= sizeof(tb_pointer_t)) temp = tb_iterator_item(iterator, next);
else tb_memcpy(temp, tb_iterator_item(iterator, next), step);
// look for hole and move elements[hole, next - 1] => [hole + 1, next]
for (last = next; last != head && (last = tb_iterator_prev(iterator, last), comp(iterator, temp, tb_iterator_item(iterator, last)) < 0); next = last)
tb_iterator_copy(iterator, next, tb_iterator_item(iterator, last));
// item => hole
tb_iterator_copy(iterator, next, temp);
}
// free
if (temp && step > sizeof(tb_pointer_t)) tb_free(temp);
}
tb_wchar_t* tb_wcsncpy(tb_wchar_t* s1, tb_wchar_t const* s2, tb_size_t n)
{
// check
tb_assert_and_check_return_val(s1 && s2, s1);
// no size or same?
tb_check_return_val(n && s1 != s2, s1);
// copy
#if 0
tb_wchar_t* s = s1;
while (n)
{
if (*s = *s2) s2++;
++s;
--n;
}
return s1;
#else
tb_size_t sn = tb_wcslen(s2);
tb_size_t cn = tb_min(sn, n);
tb_size_t fn = sn < n? n - sn : 0;
tb_memcpy(s1, s2, cn * sizeof(tb_wchar_t));
if (fn) tb_memset(s1 + cn, 0, fn * sizeof(tb_wchar_t));
return s1;
#endif
}
tb_void_t tb_vector_copy(tb_vector_ref_t vector, tb_vector_ref_t hcopy)
{
// check
tb_vector_impl_t* impl = (tb_vector_impl_t*)vector;
tb_vector_impl_t const* copy = (tb_vector_impl_t const*)hcopy;
tb_assert_and_check_return(impl && copy);
// check func
tb_assert_and_check_return(impl->func.type == copy->func.type);
tb_assert_and_check_return(impl->func.size == copy->func.size);
// check itor
tb_assert_and_check_return(impl->itor.mode == copy->itor.mode);
tb_assert_and_check_return(impl->itor.step == copy->itor.step);
// null? clear it
if (!copy->size)
{
tb_vector_clear(vector);
return ;
}
// resize if small
if (impl->size < copy->size) tb_vector_resize(vector, copy->size);
tb_assert_and_check_return(impl->data && copy->data && impl->size >= copy->size);
// copy data
if (copy->data != impl->data) tb_memcpy(impl->data, copy->data, copy->size * copy->func.size);
// copy size
impl->size = copy->size;
}
int sha256_process(sha256_state * md, const unsigned char *in, unsigned long inlen)
{
unsigned long n;
int err;
if (md == NULL || in == NULL)
return -1;
if (md->curlen > sizeof(md->buf))
return -1;
while (inlen > 0) {
if (md->curlen == 0 && inlen >= SHA256_BLOCK_SIZE) {
if ((err = sha256_compress(md, (unsigned char *)in)) != 0) {
return err;
}
md->length += SHA256_BLOCK_SIZE * 8;
in += SHA256_BLOCK_SIZE;
inlen -= SHA256_BLOCK_SIZE;
} else {
n = MIN(inlen, (SHA256_BLOCK_SIZE - md->curlen));
tb_memcpy(md->buf + md->curlen, in, (size_t)n);
md->curlen += n;
in += n;
inlen -= n;
if (md->curlen == SHA256_BLOCK_SIZE) {
if ((err = sha256_compress(md, md->buf)) != 0) {
return err;
}
md->length += 8*SHA256_BLOCK_SIZE;
md->curlen = 0;
}
}
}
return 0;
}
tb_long_t tb_queue_buffer_writ(tb_queue_buffer_ref_t buffer, tb_byte_t const* data, tb_size_t size)
{
// check
tb_assert_and_check_return_val(buffer && data && buffer->maxn, -1);
// no data?
if (!buffer->data)
{
// make data
buffer->data = tb_malloc_bytes(buffer->maxn);
tb_assert_and_check_return_val(buffer->data, -1);
// init it
buffer->head = buffer->data;
buffer->size = 0;
}
tb_assert_and_check_return_val(buffer->data && buffer->head, -1);
// full?
tb_size_t left = buffer->maxn - buffer->size;
tb_check_return_val(left, 0);
// attempt to write data in tail directly if the tail space is enough
tb_byte_t* tail = buffer->head + buffer->size;
if (buffer->data + buffer->maxn >= tail + size)
{
tb_memcpy(tail, data, size);
buffer->size += size;
return (tb_long_t)size;
}
// move data to head
if (buffer->head != buffer->data)
{
if (buffer->size) tb_memmov(buffer->data, buffer->head, buffer->size);
buffer->head = buffer->data;
}
// write data
tb_size_t writ = left > size? size : left;
tb_memcpy(buffer->data + buffer->size, data, writ);
buffer->size += writ;
// ok
return writ;
}
static tb_void_t tb_iterator_mem_copy(tb_iterator_ref_t iterator, tb_size_t itor, tb_cpointer_t item)
{
// check
tb_assert(iterator && itor < ((tb_array_iterator_ref_t)iterator)->count);
// copy
tb_memcpy((tb_byte_t*)((tb_array_iterator_ref_t)iterator)->items + itor * iterator->step, item, iterator->step);
}
tb_char_t const* tb_addrinfo_name(tb_ipaddr_ref_t addr, tb_char_t* name, tb_size_t maxn)
{
// check
tb_assert_and_check_return_val(addr && name && maxn, tb_null);
#if defined(TB_CONFIG_POSIX_HAVE_GETNAMEINFO)
// load socket address
struct sockaddr_storage saddr;
socklen_t saddrlen = (socklen_t)tb_sockaddr_load(&saddr, addr);
tb_assert_and_check_return_val(saddrlen, tb_null);
// get host name from address
return !getnameinfo((struct sockaddr const*)&saddr, saddrlen, name, maxn, tb_null, 0, NI_NAMEREQD)? name : tb_null;
#elif defined(TB_CONFIG_POSIX_HAVE_GETHOSTBYNAME)
// done
struct hostent* hostaddr = tb_null;
switch (tb_ipaddr_family(addr))
{
case TB_IPADDR_FAMILY_IPV4:
{
// init ip address
struct in_addr ipaddr = {0};
ipaddr.s_addr = tb_ipaddr_ip_is_any(addr)? INADDR_ANY : addr->u.ipv4.u32;
// get host name from address
hostaddr = gethostbyaddr((tb_char_t const*)&ipaddr, sizeof(ipaddr), AF_INET);
}
break;
case TB_IPADDR_FAMILY_IPV6:
{
// init ip address
struct in6_addr ipaddr;
tb_memset(&ipaddr, 0, sizeof(ipaddr));
// save ipv6
if (tb_ipaddr_ip_is_any(addr)) ipaddr = in6addr_any;
else tb_memcpy(ipaddr.s6_addr, addr->u.ipv6.addr.u8, sizeof(ipaddr.s6_addr));
// get host name from address
hostaddr = gethostbyaddr((tb_char_t const*)&ipaddr, sizeof(ipaddr), AF_INET6);
}
break;
default:
break;
}
tb_check_return_val(hostaddr && hostaddr->h_name, tb_null);
// save name
tb_strlcpy(name, hostaddr->h_name, maxn);
// ok?
return name;
#else
tb_trace_noimpl();
return tb_null;
#endif
}
static tb_void_t tb_iterator_init_mem_copy(tb_iterator_ref_t iterator, tb_size_t itor, tb_cpointer_t item)
{
// check
tb_assert_return(iterator);
tb_assert_return(itor < (tb_size_t)iterator->priv && item);
// copy
tb_memcpy((tb_byte_t*)iterator->data + itor * iterator->step, item, iterator->step);
}
static tb_void_t tb_element_str_repl(tb_element_ref_t element, tb_pointer_t buff, tb_cpointer_t data)
{
// check
tb_assert_and_check_return(element && element->dupl && buff);
#if 0
// free it
if (element->free) element->free(element, buff);
// dupl it
element->dupl(element, buff, data);
#else
// replace it
tb_pointer_t cstr = *((tb_pointer_t*)buff);
if (cstr && data)
{
// attempt to replace it
tb_char_t* p = (tb_char_t*)cstr;
tb_char_t const* q = (tb_char_t const*)data;
while (*p && *q) *p++ = *q++;
// not enough space?
if (!*p && *q)
{
// the left size
tb_size_t left = tb_strlen(q);
tb_assert(left);
// the copy size
tb_size_t copy = p - (tb_char_t*)cstr;
// grow size
cstr = tb_ralloc(cstr, copy + left + 1);
tb_assert(cstr);
// copy the left data
tb_memcpy((tb_char_t*)cstr + copy, q, left + 1);
// update the cstr
*((tb_pointer_t*)buff) = cstr;
}
// end
else *p = '\0';
}
// duplicate it
else if (data) element->dupl(element, buff, data);
// free it
else if (element->free) element->free(element, buff);
// clear it
else *((tb_char_t const**)buff) = tb_null;
#endif
}
tb_void_t g2_style_copy(tb_handle_t style, tb_handle_t copy)
{
g2_style_t* gstyle = (g2_style_t*)style;
g2_style_t* gcopy = (g2_style_t*)style;
tb_assert_and_check_return(gstyle && gcopy);
// refn++
if (gcopy->shader) g2_shader_inc(gcopy->shader);
// refn--
if (gstyle->shader) g2_shader_dec(gstyle->shader);
// copy
tb_memcpy(gstyle, copy, sizeof(g2_style_t));
}
tb_char_t* tb_strndup(tb_char_t const* s, tb_size_t n)
{
// check
tb_assert_and_check_return_val(s, tb_null);
// done
n = tb_strnlen(s, n);
__tb_register__ tb_char_t* p = tb_malloc_cstr(n + 1);
if (p)
{
tb_memcpy(p, s, n);
p[n] = '\0';
}
return p;
}
tb_void_t tb_md5_exit(tb_md5_t* md5, tb_byte_t* data, tb_size_t size)
{
// check
tb_assert_and_check_return(md5 && data);
// init
tb_uint32_t ip[16];
tb_int_t mdi = 0;
tb_size_t i = 0;
tb_size_t ii = 0;
tb_size_t pad_n = 0;
// save number of bits
ip[14] = md5->i[0];
ip[15] = md5->i[1];
// compute number of bytes mod 64
mdi = (tb_int_t)((md5->i[0] >> 3) & 0x3F);
// pad out to 56 mod 64
pad_n = (mdi < 56) ? (56 - mdi) : (120 - mdi);
tb_md5_spak (md5, g_md5_padding, pad_n);
// append length ip bits and transform
for (i = 0, ii = 0; i < 14; i++, ii += 4)
{
ip[i] = (((tb_uint32_t)md5->ip[ii + 3]) << 24)
| (((tb_uint32_t)md5->ip[ii + 2]) << 16)
| (((tb_uint32_t)md5->ip[ii + 1]) << 8)
| ((tb_uint32_t)md5->ip[ii]);
}
tb_md5_transform (md5->sp, ip);
// store buffer ip data
for (i = 0, ii = 0; i < 4; i++, ii += 4)
{
md5->data[ii] = (tb_byte_t)( md5->sp[i] & 0xff);
md5->data[ii+1] = (tb_byte_t)((md5->sp[i] >> 8) & 0xff);
md5->data[ii+2] = (tb_byte_t)((md5->sp[i] >> 16) & 0xff);
md5->data[ii+3] = (tb_byte_t)((md5->sp[i] >> 24) & 0xff);
}
// output
tb_memcpy(data, md5->data, 16);
}
tb_byte_t* tb_buffer_memncpyp(tb_buffer_t* buffer, tb_size_t p, tb_byte_t const* b, tb_size_t n)
{
// check
tb_assert_and_check_return_val(buffer && b, tb_null);
// check
tb_check_return_val(n, tb_buffer_data(buffer));
// resize
tb_byte_t* d = tb_buffer_resize(buffer, p + n);
tb_assert_and_check_return_val(d, tb_null);
// copy it
tb_memcpy(d + p, b, n);
// ok
return d;
}
tb_char_t* tb_strdup(tb_char_t const* s)
{
// check
tb_assert_and_check_return_val(s, tb_null);
// make
__tb_register__ tb_size_t n = tb_strlen(s);
__tb_register__ tb_char_t* p = tb_malloc_cstr(n + 1);
tb_assert_and_check_return_val(p, tb_null);
// copy
tb_memcpy(p, s, n);
// end
p[n] = '\0';
// ok
return p;
}
tb_long_t tb_queue_buffer_read(tb_queue_buffer_ref_t buffer, tb_byte_t* data, tb_size_t size)
{
// check
tb_assert_and_check_return_val(buffer && data, -1);
// no data?
tb_check_return_val(buffer->data && buffer->size && size, 0);
tb_assert_and_check_return_val(buffer->head, -1);
// read data
tb_long_t read = buffer->size > size? size : buffer->size;
tb_memcpy(data, buffer->head, read);
buffer->head += read;
buffer->size -= read;
// null? reset head
if (!buffer->size) buffer->head = buffer->data;
// ok
return read;
}
tb_bool_t vm86_parser_get_instruction_name(tb_char_t const** pp, tb_char_t const* e, tb_char_t* name, tb_size_t maxn)
{
// check
tb_assert(pp && e && name && maxn);
// done
tb_bool_t ok = tb_false;
tb_char_t const* p = *pp;
do
{
// save base
tb_char_t const* b = p;
// skip name
while (p < e && tb_isalpha(*p)) p++;
tb_check_break(p <= e && p - b < maxn);
// not instruction name?
if (p < e && !tb_isspace(*p)) break;
// save name
tb_memcpy(name, b, p - b);
// end
name[p - b] = '\0';
// skip the space
while (p < e && tb_isspace(*p)) p++;
// ok
ok = tb_true;
} while (0);
// update the code pointer if ok
if (ok) *pp = p;
// ok?
return ok;
}
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_bool_t vm86_parser_get_variable_name(tb_char_t const** pp, tb_char_t const* e, tb_char_t* name, tb_size_t maxn)
{
// check
tb_assert(pp && e && name && maxn);
// done
tb_bool_t ok = tb_false;
tb_char_t const* p = *pp;
do
{
// save base
tb_char_t const* b = p;
// check
tb_check_break(p < e && (tb_isalpha(*p) || *p == '_'));
p++;
// get name
while (p < e && (tb_isalpha(*p) || *p == '_' || tb_isdigit(*p))) p++;
tb_check_break(p <= e && p - b < maxn);
tb_memcpy(name, b, p - b);
// end
name[p - b] = '\0';
// skip the space
while (p < e && tb_isspace(*p)) p++;
// ok
ok = tb_true;
} while (0);
// update the code pointer if ok
if (ok) *pp = p;
// ok?
return ok;
}
tb_byte_t* tb_buffer_memncat(tb_buffer_t* buffer, tb_byte_t const* b, tb_size_t n)
{
// check
tb_assert_and_check_return_val(buffer && b, tb_null);
// check
tb_check_return_val(n, tb_buffer_data(buffer));
// is null?
tb_size_t p = tb_buffer_size(buffer);
if (!p) return tb_buffer_memncpy(buffer, b, n);
// resize
tb_byte_t* d = tb_buffer_resize(buffer, p + n);
tb_assert_and_check_return_val(d, tb_null);
// memcat
tb_memcpy(d + p, b, n);
// ok?
return d;
}
tb_long_t tb_queue_buffer_writ(tb_queue_buffer_t* buffer, tb_byte_t const* data, tb_size_t size)
{
// check
tb_assert_and_check_return_val(buffer && data && buffer->maxn, -1);
// no data?
if (!buffer->data)
{
// make data
buffer->data = tb_malloc_bytes(buffer->maxn);
tb_assert_and_check_return_val(buffer->data, -1);
// init it
buffer->head = buffer->data;
buffer->size = 0;
}
tb_assert_and_check_return_val(buffer->data && buffer->head, -1);
// no left?
tb_size_t left = buffer->maxn - buffer->size;
tb_check_return_val(left, 0);
// move data to head
if (buffer->head != buffer->data)
{
if (buffer->size) tb_memmov(buffer->data, buffer->head, buffer->size);
buffer->head = buffer->data;
}
// writ data
tb_size_t writ = left > size? size : left;
tb_memcpy(buffer->data + buffer->size, data, writ);
buffer->size += writ;
// ok
return writ;
}
static tb_void_t tb_ifaddrs_interface_load4(tb_list_ref_t interfaces)
{
// check
tb_assert_and_check_return(interfaces);
// done
PIP_ADAPTER_INFO adapter_info = tb_null;
do
{
// make the adapter info
adapter_info = tb_malloc0_type(IP_ADAPTER_INFO);
tb_assert_and_check_break(adapter_info);
// get the real adapter info size
ULONG size = sizeof(IP_ADAPTER_INFO);
if (tb_iphlpapi()->GetAdaptersInfo(adapter_info, &size) == ERROR_BUFFER_OVERFLOW)
{
// grow the adapter info buffer
adapter_info = (PIP_ADAPTER_INFO)tb_ralloc(adapter_info, size);
tb_assert_and_check_break(adapter_info);
// reclear it
tb_memset(adapter_info, 0, size);
}
// get the adapter info
if (tb_iphlpapi()->GetAdaptersInfo(adapter_info, &size) != NO_ERROR) break;
// done
PIP_ADAPTER_INFO adapter = adapter_info;
while (adapter)
{
// check
tb_assert(adapter->AdapterName);
/* attempt to get the interface from the cached interfaces
* and make a new interface if no the cached interface
*/
tb_ifaddrs_interface_t interface_new = {0};
tb_ifaddrs_interface_ref_t interface = tb_ifaddrs_interface_find((tb_iterator_ref_t)interfaces, adapter->AdapterName);
if (!interface) interface = &interface_new;
// check
tb_assert(interface == &interface_new || interface->name);
// save flags
if (adapter->Type == MIB_IF_TYPE_LOOPBACK) interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
// save hwaddr
if (adapter->AddressLength == sizeof(interface->hwaddr.u8))
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
tb_memcpy(interface->hwaddr.u8, adapter->Address, sizeof(interface->hwaddr.u8));
}
// save ipaddrs
PIP_ADDR_STRING ipAddress = &adapter->IpAddressList;
while (ipAddress && (interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR) != TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR)
{
// done
tb_ipaddr_t ipaddr;
if ( ipAddress->IpAddress.String
&& tb_ipaddr_ip_cstr_set(&ipaddr, ipAddress->IpAddress.String, TB_IPADDR_FAMILY_NONE))
{
if (ipaddr.family == TB_IPADDR_FAMILY_IPV4)
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
interface->ipaddr4 = ipaddr.u.ipv4;
}
else if (ipaddr.family == TB_IPADDR_FAMILY_IPV6)
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
interface->ipaddr6 = ipaddr.u.ipv6;
}
}
// the next
ipAddress = ipAddress->Next;
}
// new interface? save it
if ( interface == &interface_new
&& interface->flags)
{
// save interface name
interface->name = tb_strdup(adapter->AdapterName);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
// the next adapter
adapter = adapter->Next;
}
} while (0);
// exit the adapter info
if (adapter_info) tb_free(adapter_info);
adapter_info = tb_null;
}
static tb_void_t tb_ifaddrs_interface_load6(tb_list_ref_t interfaces)
{
// check
tb_assert_and_check_return(interfaces);
// done
PIP_ADAPTER_ADDRESSES addresses = tb_null;
do
{
// make the addresses
addresses = (PIP_ADAPTER_ADDRESSES)tb_malloc0_type(IP_ADAPTER_ADDRESSES);
tb_assert_and_check_break(addresses);
// get the real adapter info size
ULONG size = sizeof(IP_ADAPTER_ADDRESSES);
if (tb_iphlpapi()->GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_DNS_SERVER, tb_null, addresses, &size) == ERROR_BUFFER_OVERFLOW)
{
// grow the adapter info buffer
addresses = (PIP_ADAPTER_ADDRESSES)tb_ralloc(addresses, size);
tb_assert_and_check_break(addresses);
// reclear it
tb_memset(addresses, 0, size);
}
// get the addresses
if (tb_iphlpapi()->GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_DNS_SERVER, tb_null, addresses, &size) != NO_ERROR) break;
// done
PIP_ADAPTER_ADDRESSES address = addresses;
while (address)
{
// check
tb_assert(address->AdapterName);
/* attempt to get the interface from the cached interfaces
* and make a new interface if no the cached interface
*/
tb_ifaddrs_interface_t interface_new = {0};
tb_ifaddrs_interface_ref_t interface = tb_ifaddrs_interface_find((tb_iterator_ref_t)interfaces, address->AdapterName);
if (!interface) interface = &interface_new;
// check
tb_assert(interface == &interface_new || interface->name);
// save flags
if (address->IfType == IF_TYPE_SOFTWARE_LOOPBACK) interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
// save hwaddr
if (address->PhysicalAddressLength == sizeof(interface->hwaddr.u8))
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
tb_memcpy(interface->hwaddr.u8, address->PhysicalAddress, sizeof(interface->hwaddr.u8));
}
// save ipaddrs
PIP_ADAPTER_UNICAST_ADDRESS ipAddress = address->FirstUnicastAddress;
while (ipAddress && (interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR) != TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR)
{
// done
tb_ipaddr_t ipaddr;
struct sockaddr_storage* saddr = (struct sockaddr_storage*)ipAddress->Address.lpSockaddr;
if (saddr && tb_sockaddr_save(&ipaddr, saddr))
{
if (ipaddr.family == TB_IPADDR_FAMILY_IPV4)
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
interface->ipaddr4 = ipaddr.u.ipv4;
}
else if (ipaddr.family == TB_IPADDR_FAMILY_IPV6)
{
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
interface->ipaddr6 = ipaddr.u.ipv6;
}
}
// the next
ipAddress = ipAddress->Next;
}
// new interface? save it
if ( interface == &interface_new
&& interface->flags)
{
// save interface name
interface->name = tb_strdup(address->AdapterName);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
// the next address
address = address->Next;
}
} while (0);
// exit the addresses
if (addresses) tb_free(addresses);
addresses = tb_null;
}
tb_iterator_ref_t tb_ifaddrs_itor(tb_ifaddrs_ref_t ifaddrs, tb_bool_t reload)
{
// check
tb_list_ref_t interfaces = (tb_list_ref_t)ifaddrs;
tb_assert_and_check_return_val(interfaces, tb_null);
// uses the cached interfaces?
tb_check_return_val(reload, (tb_iterator_ref_t)interfaces);
// clear interfaces first
tb_list_clear(interfaces);
// query the list of interfaces.
struct ifaddrs* list = tb_null;
if (!getifaddrs(&list) && list)
{
#if 0
// init sock
tb_long_t sock = socket(AF_INET, SOCK_DGRAM, 0);
#endif
// done
struct ifaddrs* item = tb_null;
for (item = list; item; item = item->ifa_next)
{
// check
tb_check_continue(item->ifa_addr && item->ifa_name);
/* attempt to get the interface from the cached interfaces
* and make a new interface if no the cached interface
*/
tb_ifaddrs_interface_t interface_new = {0};
tb_ifaddrs_interface_ref_t interface = tb_ifaddrs_interface_find((tb_iterator_ref_t)interfaces, item->ifa_name);
if (!interface) interface = &interface_new;
// check
tb_assert(interface == &interface_new || interface->name);
// done
switch (item->ifa_addr->sa_family)
{
case AF_INET:
{
// the address
struct sockaddr_storage const* addr = (struct sockaddr_storage const*)item->ifa_addr;
// save ipaddr4
tb_ipaddr_t ipaddr4;
if (!tb_sockaddr_save(&ipaddr4, addr)) break;
interface->ipaddr4 = ipaddr4.u.ipv4;
// save flags
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR4;
if ((item->ifa_flags & IFF_LOOPBACK) || tb_ipaddr_ip_is_loopback(&ipaddr4))
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
#if 0
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// attempt get the hwaddr
struct ifreq ifr;
tb_memset(&ifr, 0, sizeof(ifr));
tb_strcpy(ifr.ifr_name, item->ifa_name);
if (!ioctl(sock, SIOCGIFHWADDR, &ifr))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, ifr.ifr_hwaddr.sa_data, sizeof(interface->hwaddr.u8));
}
}
#endif
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
break;
case AF_INET6:
{
// the address
struct sockaddr_storage const* addr = (struct sockaddr_storage const*)item->ifa_addr;
// save ipaddr6
tb_ipaddr_t ipaddr6;
if (!tb_sockaddr_save(&ipaddr6, addr)) break;
interface->ipaddr6 = ipaddr6.u.ipv6;
// save flags
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_IPADDR6;
if ((item->ifa_flags & IFF_LOOPBACK) || tb_ipaddr_ip_is_loopback(&ipaddr6))
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_IS_LOOPBACK;
#if 0
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// attempt get the hwaddr
struct ifreq ifr;
tb_memset(&ifr, 0, sizeof(ifr));
tb_strcpy(ifr.ifr_name, item->ifa_name);
if (!ioctl(sock, SIOCGIFHWADDR, &ifr))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, ifr.ifr_hwaddr.sa_data, sizeof(interface->hwaddr.u8));
}
}
#endif
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
break;
case AF_PACKET:
{
// the address
struct sockaddr_ll const* addr = (struct sockaddr_ll const*)item->ifa_addr;
// check
tb_check_break(addr->sll_halen == sizeof(interface->hwaddr.u8));
// no hwaddr? get it
if (!(interface->flags & TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR))
{
// have hwaddr
interface->flags |= TB_IFADDRS_INTERFACE_FLAG_HAVE_HWADDR;
// save hwaddr
tb_memcpy(interface->hwaddr.u8, addr->sll_addr, sizeof(interface->hwaddr.u8));
// new interface? save it
if (interface == &interface_new)
{
// save interface name
interface->name = tb_strdup(item->ifa_name);
tb_assert(interface->name);
// save interface
tb_list_insert_tail(interfaces, interface);
}
}
}
break;
default:
{
// trace
tb_trace_d("unknown family: %d", item->ifa_addr->sa_family);
}
break;
}
}
#if 0
// exit socket
if (sock) close(sock);
sock = 0;
#endif
// exit the interface list
freeifaddrs(list);
}
// ok?
return (tb_iterator_ref_t)interfaces;
}
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_size_t tb_path_translate(tb_char_t* path, tb_size_t size, tb_size_t maxn)
{
// check
tb_assert_and_check_return_val(path, 0);
// file://?
tb_char_t* p = path;
if (!tb_strnicmp(p, "file:", 5)) p += 5;
// is user directory?
else if (path[0] == '~')
{
// get the home directory
tb_char_t home[TB_PATH_MAXN];
tb_size_t home_size = tb_directory_home(home, sizeof(home) - 1);
tb_assert_and_check_return_val(home_size, 0);
// check the path space
tb_size_t path_size = size? size : tb_strlen(path);
tb_assert_and_check_return_val(home_size + path_size - 1 < maxn, 0);
// move the path and ensure the enough space for the home directory
tb_memmov(path + home_size, path + 1, path_size - 1);
// copy the home directory
tb_memcpy(path, home, home_size);
path[home_size + path_size - 1] = '\0';
}
// remove repeat separator
tb_char_t* q = path;
tb_size_t repeat = 0;
for (; *p; p++)
{
if (tb_path_is_separator(*p))
{
// save the separator if not exists
if (!repeat) *q++ = TB_PATH_SEPARATOR;
// repeat it
repeat++;
}
else
{
// save character
*q++ = *p;
// clear repeat
repeat = 0;
}
}
// remove the tail separator and not root: '/'
if (q > path + 1 && *(q - 1) == TB_PATH_SEPARATOR) q--;
// end
*q = '\0';
// is windows path?
if (q > path + 1 && tb_isalpha(path[0]) && path[1] == ':')
{
// get the upper drive prefix
path[0] = tb_toupper(path[0]);
// append the drive separator if not exists
if (q - path == 2)
{
*q++ = TB_PATH_SEPARATOR;
*q = '\0';
}
}
// trace
tb_trace_d("translate: %s", path);
// ok
return q - path;
}
/*! put impl
*
* <pre>
* init:
*
* 1(head)
* -------------------------
* | |
* 4 2
* -------------- -------------
* | | | |
* 6(parent) 9 7 8
* ---------
* | |
* 10(last) (hole) <= 5(val)
* after:
*
* 1(head)
* -------------------------
* | |
* 4 2
* -------------- -------------
* | | | |
* 5(hole) 9 7 8
* ---------
* | |
* 10(last) 6(last)
* </pre>
*/
tb_void_t tb_heap_put(tb_heap_ref_t heap, tb_cpointer_t data)
{
// check
tb_heap_impl_t* impl = (tb_heap_impl_t*)heap;
tb_assert_and_check_return(impl && impl->data);
// full? grow it
if (impl->size == impl->maxn)
{
// the maxn
tb_size_t maxn = tb_align4(impl->maxn + impl->grow);
tb_assert_and_check_return(maxn < TB_HEAD_MAXN);
// realloc data
impl->data = (tb_byte_t*)tb_ralloc(impl->data, maxn * impl->func.size);
tb_assert_and_check_return(impl->data);
// must be align by 4-bytes
tb_assert_and_check_return(!(((tb_size_t)(impl->data)) & 3));
// clear the grow data
tb_memset(impl->data + impl->size * impl->func.size, 0, (maxn - impl->maxn) * impl->func.size);
// save maxn
impl->maxn = maxn;
}
// check
tb_assert_and_check_return(impl->size < impl->maxn);
// init func
tb_item_func_comp_t func_comp = impl->func.comp;
tb_item_func_data_t func_data = impl->func.data;
tb_assert_and_check_return(func_comp && func_data);
// walk, (hole - 1) / 2: the parent node of the hole
tb_size_t parent = 0;
tb_byte_t* head = impl->data;
tb_size_t hole = impl->size;
tb_size_t step = impl->func.size;
switch (step)
{
#ifndef __tb_small__
case sizeof(tb_uint64_t):
{
for (parent = (hole - 1) >> 1; hole && (func_comp(&impl->func, func_data(&impl->func, head + parent * step), data) > 0); parent = (hole - 1) >> 1)
{
// move item: parent => hole
*((tb_uint64_t*)(head + hole * step)) = *((tb_uint64_t*)(head + parent * step));
// move node: hole => parent
hole = parent;
}
}
break;
case sizeof(tb_uint32_t):
{
for (parent = (hole - 1) >> 1; hole && (func_comp(&impl->func, func_data(&impl->func, head + parent * step), data) > 0); parent = (hole - 1) >> 1)
{
// move item: parent => hole
*((tb_uint32_t*)(head + hole * step)) = *((tb_uint32_t*)(head + parent * step));
// move node: hole => parent
hole = parent;
}
}
break;
case sizeof(tb_uint16_t):
{
for (parent = (hole - 1) >> 1; hole && (func_comp(&impl->func, func_data(&impl->func, head + parent * step), data) > 0); parent = (hole - 1) >> 1)
{
// move item: parent => hole
*((tb_uint16_t*)(head + hole * step)) = *((tb_uint16_t*)(head + parent * step));
// move node: hole => parent
hole = parent;
}
}
break;
case sizeof(tb_uint8_t):
{
for (parent = (hole - 1) >> 1; hole && (func_comp(&impl->func, func_data(&impl->func, head + parent * step), data) > 0); parent = (hole - 1) >> 1)
{
// move item: parent => hole
*((tb_uint8_t*)(head + hole * step)) = *((tb_uint8_t*)(head + parent * step));
// move node: hole => parent
hole = parent;
}
}
break;
#endif
default:
for (parent = (hole - 1) >> 1; hole && (func_comp(&impl->func, func_data(&impl->func, head + parent * step), data) > 0); parent = (hole - 1) >> 1)
{
// move item: parent => hole
tb_memcpy(head + hole * step, head + parent * step, step);
// move node: hole => parent
hole = parent;
}
break;
}
// save data
impl->func.dupl(&impl->func, head + hole * step, data);
// size++
impl->size++;
// check
// tb_heap_check(impl);
}
/*! remove the impl item
*
* <pre>
* init:
* 1(head)
* -------------------------
* | |
* (hole) 2
* -------------- -------------
* | | | |
* 6(smaler) 9 7 8
* --------- ---- (hole) <-
* | | | |
* 10 16 8 (last)---------------------------------------------> 8 (val)
*
*
* after:
* 1(head)
* -------------------------
* | |
* 6 2
* -------------- -------------
* | | | |
* (hole) 9 7 8
* --------- <-
* | | |
* 10(smaller)16 8 (val)
*
*
* after:
* 1(head)
* -------------------------
* | |
* 6 2
* -------------- -------------
* | | | |
* 8 9 7 8
* ---------
* | |
* 10 16
*
* </pre>
*/
static tb_void_t tb_heap_itor_remove(tb_iterator_ref_t iterator, tb_size_t itor)
{
// check
tb_heap_impl_t* impl = (tb_heap_impl_t*)iterator;
tb_assert_and_check_return(impl && impl->data && impl->size && itor < impl->size);
// init func
tb_item_func_comp_t func_comp = impl->func.comp;
tb_item_func_data_t func_data = impl->func.data;
tb_assert_and_check_return(func_comp && func_data);
// walk, 2 * hole + 1: the left child node of hole
tb_size_t step = impl->func.size;
tb_byte_t* head = impl->data;
tb_byte_t* hole = head + itor * step;
tb_byte_t* tail = head + impl->size * step;
tb_byte_t* last = head + (impl->size - 1) * step;
tb_byte_t* child = head + ((itor << 1) + 1) * step;
tb_pointer_t data_child = tb_null;
tb_pointer_t data_rchild = tb_null;
tb_pointer_t data_last = func_data(&impl->func, last);
switch (step)
{
#ifndef __tb_small__
case sizeof(tb_uint64_t):
{
for (; child < tail; child = head + (((child - head) << 1) + step))
{
// the smaller child node
data_child = func_data(&impl->func, child);
if (child + step < tail && func_comp(&impl->func, data_child, (data_rchild = func_data(&impl->func, child + step))) > 0)
{
child += step;
data_child = data_rchild;
}
// end?
if (func_comp(&impl->func, data_child, data_last) > 0) break;
// the smaller child node => hole
*((tb_uint64_t*)hole) = *((tb_uint64_t*)child);
// move the hole down to it's larger child node
hole = child;
}
}
break;
case sizeof(tb_uint32_t):
{
for (; child < tail; child = head + (((child - head) << 1) + step))
{
// the smaller child node
data_child = func_data(&impl->func, child);
if (child + step < tail && func_comp(&impl->func, data_child, (data_rchild = func_data(&impl->func, child + step))) > 0)
{
child += step;
data_child = data_rchild;
}
// end?
if (func_comp(&impl->func, data_child, data_last) > 0) break;
// the smaller child node => hole
*((tb_uint32_t*)hole) = *((tb_uint32_t*)child);
// move the hole down to it's larger child node
hole = child;
}
}
break;
case sizeof(tb_uint16_t):
{
for (; child < tail; child = head + (((child - head) << 1) + step))
{
// the smaller child node
data_child = func_data(&impl->func, child);
if (child + step < tail && func_comp(&impl->func, data_child, (data_rchild = func_data(&impl->func, child + step))) > 0)
{
child += step;
data_child = data_rchild;
}
// end?
if (func_comp(&impl->func, data_child, data_last) > 0) break;
// the smaller child node => hole
*((tb_uint16_t*)hole) = *((tb_uint16_t*)child);
// move the hole down to it's larger child node
hole = child;
}
}
break;
case sizeof(tb_uint8_t):
{
for (; child < tail; child = head + (((child - head) << 1) + step))
{
// the smaller child node
data_child = func_data(&impl->func, child);
if (child + step < tail && func_comp(&impl->func, data_child, (data_rchild = func_data(&impl->func, child + step))) > 0)
{
child += step;
data_child = data_rchild;
}
// end?
if (func_comp(&impl->func, data_child, data_last) > 0) break;
// the smaller child node => hole
*((tb_uint8_t*)hole) = *((tb_uint8_t*)child);
// move the hole down to it's larger child node
hole = child;
}
}
break;
#endif
default:
{
for (; child < tail; child = head + (((child - head) << 1) + step))
{
// the smaller child node
data_child = func_data(&impl->func, child);
if (child + step < tail && func_comp(&impl->func, data_child, (data_rchild = func_data(&impl->func, child + step))) > 0)
{
child += step;
data_child = data_rchild;
}
// end?
if (func_comp(&impl->func, data_child, data_last) > 0) break;
// the smaller child node => hole
tb_memcpy(hole, child, step);
// move the hole down to it's larger child node
hole = child;
}
}
break;
}
// the last node => hole
if (hole != last) tb_memcpy(hole, last, step);
// size--
impl->size--;
// check
// tb_heap_check(impl);
}
static tb_long_t tb_aiop_rtor_select_wait(tb_aiop_rtor_impl_t* rtor, tb_aioe_ref_t list, tb_size_t maxn, tb_long_t timeout)
{
// check
tb_aiop_rtor_select_impl_t* impl = (tb_aiop_rtor_select_impl_t*)rtor;
tb_assert_and_check_return_val(impl && rtor->aiop && list && maxn, -1);
// the aiop
tb_aiop_impl_t* aiop = rtor->aiop;
tb_assert_and_check_return_val(aiop, tb_false);
// init time
struct timeval t = {0};
if (timeout > 0)
{
#ifdef TB_CONFIG_OS_WINDOWS
t.tv_sec = (LONG)(timeout / 1000);
#else
t.tv_sec = (timeout / 1000);
#endif
t.tv_usec = (timeout % 1000) * 1000;
}
// loop
tb_long_t wait = 0;
tb_bool_t stop = tb_false;
tb_hong_t time = tb_mclock();
while (!wait && !stop && (timeout < 0 || tb_mclock() < time + timeout))
{
// enter
tb_spinlock_enter(&impl->lock.pfds);
// init fdo
tb_size_t sfdm = impl->sfdm;
tb_memcpy(&impl->rfdo, &impl->rfdi, sizeof(fd_set));
tb_memcpy(&impl->wfdo, &impl->wfdi, sizeof(fd_set));
// leave
tb_spinlock_leave(&impl->lock.pfds);
// wait
#ifdef TB_CONFIG_OS_WINDOWS
tb_long_t sfdn = tb_ws2_32()->select((tb_int_t)sfdm + 1, &impl->rfdo, &impl->wfdo, tb_null, timeout >= 0? &t : tb_null);
#else
tb_long_t sfdn = select(sfdm + 1, &impl->rfdo, &impl->wfdo, tb_null, timeout >= 0? &t : tb_null);
#endif
tb_assert_and_check_return_val(sfdn >= 0, -1);
// timeout?
tb_check_return_val(sfdn, 0);
// enter
tb_spinlock_enter(&impl->lock.hash);
// sync
tb_size_t itor = tb_iterator_head(impl->hash);
tb_size_t tail = tb_iterator_tail(impl->hash);
for (; itor != tail && wait >= 0 && (tb_size_t)wait < maxn; itor = tb_iterator_next(impl->hash, itor))
{
tb_hash_map_item_ref_t item = (tb_hash_map_item_ref_t)tb_iterator_item(impl->hash, itor);
if (item)
{
// the sock
tb_socket_ref_t sock = (tb_socket_ref_t)item->name;
tb_assert_and_check_return_val(sock, -1);
// spak?
if (sock == aiop->spak[1] && FD_ISSET(((tb_long_t)aiop->spak[1] - 1), &impl->rfdo))
{
// read spak
tb_char_t spak = '\0';
if (1 != tb_socket_recv(aiop->spak[1], (tb_byte_t*)&spak, 1)) wait = -1;
// killed?
if (spak == 'k') wait = -1;
tb_check_break(wait >= 0);
// stop to wait
stop = tb_true;
// continue it
continue ;
}
// filter spak
tb_check_continue(sock != aiop->spak[1]);
// the fd
tb_long_t fd = (tb_long_t)item->name - 1;
// the aioo
tb_aioo_impl_t* aioo = (tb_aioo_impl_t*)item->data;
tb_assert_and_check_return_val(aioo && aioo->sock == sock, -1);
// init aioe
tb_aioe_t aioe = {0};
aioe.priv = aioo->priv;
aioe.aioo = (tb_aioo_ref_t)aioo;
if (FD_ISSET(fd, &impl->rfdo))
{
aioe.code |= TB_AIOE_CODE_RECV;
if (aioo->code & TB_AIOE_CODE_ACPT) aioe.code |= TB_AIOE_CODE_ACPT;
}
if (FD_ISSET(fd, &impl->wfdo))
{
aioe.code |= TB_AIOE_CODE_SEND;
if (aioo->code & TB_AIOE_CODE_CONN) aioe.code |= TB_AIOE_CODE_CONN;
}
// ok?
if (aioe.code)
{
// save aioe
list[wait++] = aioe;
// oneshot? clear it
if (aioo->code & TB_AIOE_CODE_ONESHOT)
{
// clear aioo
aioo->code = TB_AIOE_CODE_NONE;
aioo->priv = tb_null;
// clear events
tb_spinlock_enter(&impl->lock.pfds);
FD_CLR(fd, &impl->rfdi);
FD_CLR(fd, &impl->wfdi);
tb_spinlock_leave(&impl->lock.pfds);
}
}
}
}
// leave
tb_spinlock_leave(&impl->lock.hash);
}
// ok
return wait;
}
tb_byte_t* tb_buffer_resize(tb_buffer_t* buffer, tb_size_t size)
{
// check
tb_assert_and_check_return_val(buffer && size, tb_null);
// done
tb_bool_t ok = tb_false;
tb_byte_t* buff_data = buffer->data;
tb_size_t buff_size = buffer->size;
tb_size_t buff_maxn = buffer->maxn;
do
{
// check
tb_assert_and_check_break(buff_data);
// using static buffer?
if (buff_data == buffer->buff)
{
// grow?
if (size > buff_maxn)
{
// grow maxn
buff_maxn = tb_align8(size + TB_BUFFER_GROW_SIZE);
tb_assert_and_check_break(size <= buff_maxn);
// grow data
buff_data = tb_malloc_bytes(buff_maxn);
tb_assert_and_check_break(buff_data);
// copy data
tb_memcpy(buff_data, buffer->buff, buff_size);
}
// update the size
buff_size = size;
}
else
{
// grow?
if (size > buff_maxn)
{
// grow maxn
buff_maxn = tb_align8(size + TB_BUFFER_GROW_SIZE);
tb_assert_and_check_break(size <= buff_maxn);
// grow data
buff_data = (tb_byte_t*)tb_ralloc(buff_data, buff_maxn);
tb_assert_and_check_break(buff_data);
}
#if 0
// decrease to the static buffer
else if (size <= sizeof(buffer->buff))
{
// update the maxn
buff_maxn = sizeof(buffer->buff);
// copy data
tb_memcpy(buffer->buff, buff_data, size);
// free data
tb_free(buff_data);
// using the static buffer
buff_data = buffer->buff;
}
#endif
// update the size
buff_size = size;
}
// update the buffer
buffer->data = buff_data;
buffer->size = buff_size;
buffer->maxn = buff_maxn;
// ok
ok = tb_true;
} while (0);
// trace
if (!ok) tb_trace_e("resize buffer failed: %lu => %lu", buff_size, size);
// ok
return ok? (tb_byte_t*)buffer->data : tb_null;
}