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xo-flatstring: + .append() methods

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Roland Conybeare 2024-04-23 10:34:37 -04:00
commit 7cee19423f
1 changed files with 48 additions and 0 deletions
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48
include/xo/flatstring/flatstring.hpp
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@ -353,6 +353,54 @@ namespace xo {
}
///@}
/** @defgroup flatstring-append append **/
///@{
/** @brief append contents of null-terminated string cstr **/
constexpr flatstring & append(const value_type * cstr) {
std::size_t z = this->size();
std::size_t i = 0;
for (; (z+i < N-1) && (cstr[i] != '\0'); ++i)
value_[z+i] = cstr[i];
for (; z+i < N; ++i)
value_[z+i] = '\0';
return *this;
}
/** @brief append the first count members of cstr[] **/
constexpr flatstring & append(const value_type * cstr, size_type count) {
std::size_t z = this->size();
std::size_t i = 0;
for (; z+i < std::min(N-1, count); ++i)
value_[z+i] = cstr[i];
for (; z+i < N; ++i)
value_[z+i] = '\0';
return *this;
}
/** @brief append substring [pos .. pos + count) of x **/
template <std::size_t N2>
constexpr flatstring & append(const flatstring<N2> & x,
size_type pos, size_type count = npos)
{
std::size_t i_src = 0;
std::size_t i_dest = size();
for (;
i_src < std::min(std::min(count,
(x.fixed_capacity-1 > pos)
? x.fixed_capacity-1 - pos
: 0ul),
N-1);
++i_src, ++i_dest)
value_[i_dest] = x.value_[pos+i_src];
for (; i_dest < N; ++i_dest)
value_[i_dest] = '\0';
return *this;
}
///@}
// insert
// insert_range
// erase