[libc-commits] [libc] Implement inet_pton (PR #224644)

[Pavel Labath via libc-commits]

================
@@ -26,8 +27,48 @@
 #include "src/string/memory_utils/inline_memcpy.h"
 
 namespace LIBC_NAMESPACE_DECL {
+
 namespace net {
 
+int inet_pton_v4(cpp::string_view src, void *dst) {
+  uint8_t bytes[4];
+  size_t idx = 0;
+  uint32_t current_val = 0;
+  size_t digits_in_octet = 0;
+
+  for (char c : src) {
+    if (c >= '0' && c <= '9') {
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labath wrote:

We're also (trying to) support non-ascii targets, so these kinds of conditions aren't safe. This should be `internal::isdigit(c)`. Or just make a switch listing out all the cases (the two should produce rougly the same code).

https://github.com/llvm/llvm-project/pull/224644