Character set clean-up

[anarthal]

character_set::name is now a const char*, since NULL characters are not allowed by MySQL character_set::next_char doesn't need to be noexcept Removed noexcepts from next_char functions Internal refactor

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.47%. Comparing base (7736135) to head (065b583).

Additional details and impacted files

[](https://app.codecov.io/gh/boostorg/mysql/pull/287?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) ```diff @@ Coverage Diff @@ ## develop #287 +/- ## =========================================== - Coverage 98.47% 98.47% -0.01% =========================================== Files 136 136 Lines 6551 6547 -4 =========================================== - Hits 6451 6447 -4 Misses 100 100 ``` | [Files](https://app.codecov.io/gh/boostorg/mysql/pull/287?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) | Coverage Δ | | |---|---|---| | [include/boost/mysql/impl/character\_set.ipp](https://app.codecov.io/gh/boostorg/mysql/pull/287?src=pr&el=tree&filepath=include%2Fboost%2Fmysql%2Fimpl%2Fcharacter_set.ipp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg#diff-aW5jbHVkZS9ib29zdC9teXNxbC9pbXBsL2NoYXJhY3Rlcl9zZXQuaXBw) | `100.00% <100.00%> (ø)` | | | [include/boost/mysql/impl/connection\_impl.ipp](https://app.codecov.io/gh/boostorg/mysql/pull/287?src=pr&el=tree&filepath=include%2Fboost%2Fmysql%2Fimpl%2Fconnection_impl.ipp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg#diff-aW5jbHVkZS9ib29zdC9teXNxbC9pbXBsL2Nvbm5lY3Rpb25faW1wbC5pcHA=) | `100.00% <100.00%> (ø)` | | | [...sql/impl/internal/sansio/connection\_state\_data.hpp](https://app.codecov.io/gh/boostorg/mysql/pull/287?src=pr&el=tree&filepath=include%2Fboost%2Fmysql%2Fimpl%2Finternal%2Fsansio%2Fconnection_state_data.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg#diff-aW5jbHVkZS9ib29zdC9teXNxbC9pbXBsL2ludGVybmFsL3NhbnNpby9jb25uZWN0aW9uX3N0YXRlX2RhdGEuaHBw) | `100.00% <ø> (ø)` | | | [...t/mysql/impl/internal/sansio/set\_character\_set.hpp](https://app.codecov.io/gh/boostorg/mysql/pull/287?src=pr&el=tree&filepath=include%2Fboost%2Fmysql%2Fimpl%2Finternal%2Fsansio%2Fset_character_set.hpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg#diff-aW5jbHVkZS9ib29zdC9teXNxbC9pbXBsL2ludGVybmFsL3NhbnNpby9zZXRfY2hhcmFjdGVyX3NldC5ocHA=) | `97.36% <ø> (-0.14%)` | :arrow_down: | ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/boostorg/mysql/pull/287?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/boostorg/mysql/pull/287?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). Last update [7736135...065b583](https://app.codecov.io/gh/boostorg/mysql/pull/287?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg).