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This commit is contained in:
Victor Zverovich
2023-07-20 17:18:03 -07:00
parent 40f35d6f04
commit ac0ab8eff3
3 changed files with 47 additions and 18 deletions
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24
include/fmt/format.h
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@@ -569,8 +569,8 @@ template <typename Container, FMT_ENABLE_IF(is_contiguous<Container>::value)>
__attribute__((no_sanitize("undefined")))
#endif
inline auto
reserve(std::back_insert_iterator<Container> it, size_t n)
-> typename Container::value_type* {
reserve(std::back_insert_iterator<Container> it, size_t n) ->
typename Container::value_type* {
Container& c = get_container(it);
size_t size = c.size();
c.resize(size + n);
@@ -1251,7 +1251,7 @@ FMT_CONSTEXPR auto count_digits(UInt n) -> int {
FMT_INLINE auto do_count_digits(uint32_t n) -> int {
// An optimization by Kendall Willets from https://bit.ly/3uOIQrB.
// This increments the upper 32 bits (log10(T) - 1) when >= T is added.
# define FMT_INC(T) (((sizeof(# T) - 1ull) << 32) - T)
# define FMT_INC(T) (((sizeof(#T) - 1ull) << 32) - T)
static constexpr uint64_t table[] = {
FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8
FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64
@@ -1412,6 +1412,8 @@ class utf8_to_utf16 {
auto str() const -> std::wstring { return {&buffer_[0], size()}; }
};
enum class to_utf8_error_policy { abort, replace };
// A converter from UTF-16/UTF-32 (host endian) to UTF-8.
template <typename WChar, typename Buffer = memory_buffer> class to_utf8 {
private:
@@ -1440,16 +1442,20 @@ template <typename WChar, typename Buffer = memory_buffer> class to_utf8 {
buffer_.push_back(0);
return true;
}
static bool convert(Buffer& buf, basic_string_view<WChar> s) {
static bool convert(
Buffer& buf, basic_string_view<WChar> s,
to_utf8_error_policy policy = to_utf8_error_policy::abort) {
for (auto p = s.begin(); p != s.end(); ++p) {
uint32_t c = static_cast<uint32_t>(*p);
if (sizeof(WChar) == 2 && c >= 0xd800 && c <= 0xdfff) {
// surrogate pair
// Handle a surrogate pair.
++p;
if (p == s.end() || (c & 0xfc00) != 0xd800 || (*p & 0xfc00) != 0xdc00) {
return false;
if (policy == to_utf8_error_policy::abort) return false;
buf.append(string_view("<EFBFBD>"));
} else {
c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00;
}
c = (c << 10) + static_cast<uint32_t>(*p) - 0x35fdc00;
}
if (c < 0x80) {
buf.push_back(static_cast<char>(c));
@@ -4147,7 +4153,9 @@ template <> struct formatter<bytes> {
};
// group_digits_view is not derived from view because it copies the argument.
template <typename T> struct group_digits_view { T value; };
template <typename T> struct group_digits_view {
T value;
};
/**
\rst