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[core] Add copy() method to StringRef for std::string compatibility (#15028)

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J. Nick Koston
2026-03-20 13:58:02 -10:00
committed by GitHub
parent 0b01f9fc42
commit 8fa2e75afa
1 changed files with 9 additions and 0 deletions
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9
esphome/core/string_ref.h
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@@ -76,6 +76,15 @@ class StringRef {
constexpr bool empty() const { return len_ == 0; } constexpr bool empty() const { return len_ == 0; }
constexpr const_reference operator[](size_type pos) const { return *(base_ + pos); } constexpr const_reference operator[](size_type pos) const { return *(base_ + pos); }
/// Copy characters to destination buffer (std::string::copy-like, but returns 0 instead of throwing on out-of-range)
size_type copy(char *dest, size_type count, size_type pos = 0) const {
if (pos >= len_)
return 0;
size_type actual = (count > len_ - pos) ? len_ - pos : count;
std::memcpy(dest, base_ + pos, actual);
return actual;
}
std::string str() const { return std::string(base_, len_); } std::string str() const { return std::string(base_, len_); }
const uint8_t *byte() const { return reinterpret_cast<const uint8_t *>(base_); } const uint8_t *byte() const { return reinterpret_cast<const uint8_t *>(base_); }