github-actions[bot] commented on code in PR #27342:
URL: https://github.com/apache/doris/pull/27342#discussion_r1400420461
##########
be/src/vec/common/format_ip.cpp:
##########
@@ -75,4 +76,123 @@ consteval std::array<std::pair<const char*, size_t>, N>
str_make_array() {
/// This will generate static array of pair<const char *, size_t> for [0..255]
at compile time
extern constexpr std::array<std::pair<const char*, size_t>, 256>
one_byte_to_string_lookup_table =
str_make_array<256>();
+
+/// integer logarithm, return ceil(log(value, base)) (the smallest integer
greater or equal than log(value, base)
+static constexpr UInt32 intLog(const UInt32 value, const UInt32 base, const
bool carry) {
+ return value >= base ? 1 + intLog(value / base, base, value % base ||
carry)
+ : value % base > 1 || carry;
+}
+
+/// Print integer in desired base, faster than sprintf.
+/// NOTE This is not the best way. See
https://github.com/miloyip/itoa-benchmark
+/// But it doesn't matter here.
+template <UInt32 base, typename T>
+static void print_integer(char*& out, T value) {
+ if (value == 0) {
+ *out++ = '0';
+ } else {
+ constexpr size_t buffer_size = sizeof(T) * intLog(256, base, false);
+
+ char buf[buffer_size];
+ auto ptr = buf;
+
+ while (value > 0) {
+ *ptr = hex_digit_lowercase(value % base);
+ ++ptr;
+ value /= base;
+ }
+
+ /// Copy to out reversed.
+ while (ptr != buf) {
+ --ptr;
+ *out = *ptr;
+ ++out;
+ }
+ }
+}
+
+void formatIPv6(const unsigned char* src, char*& dst, uint8_t
zeroed_tail_bytes_count) {
Review Comment:
warning: function 'formatIPv6' exceeds recommended size/complexity
thresholds [readability-function-size]
```cpp
void formatIPv6(const unsigned char* src, char*& dst, uint8_t
zeroed_tail_bytes_count) {
^
```
<details>
<summary>Additional context</summary>
**be/src/vec/common/format_ip.cpp:113:** 82 lines including whitespace and
comments (threshold 80)
```cpp
void formatIPv6(const unsigned char* src, char*& dst, uint8_t
zeroed_tail_bytes_count) {
^
```
</details>
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