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Add ability to automatically comment SQL queries in clickhouse-client/local

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This is like Alt-# in readline, it is useful when you need to look
something else, and need to save current query/command somewhere, and
commented lin the history is a good option.

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
This commit is contained in:
Azat Khuzhin 2022-09-12 16:16:40 +02:00
parent 583c530d0f
commit 569b4bb631
1 changed files with 29 additions and 0 deletions
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29
base/base/ReplxxLineReader.cpp
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@ -220,6 +220,35 @@ ReplxxLineReader::ReplxxLineReader(
rx.bind_key(Replxx::KEY::control('W'), [this](char32_t code) { return rx.invoke(Replxx::ACTION::KILL_TO_WHITESPACE_ON_LEFT, code); });
rx.bind_key(Replxx::KEY::meta('E'), [this](char32_t) { openEditor(); return Replxx::ACTION_RESULT::CONTINUE; });
/// readline insert-comment
auto insert_comment_action = [this](char32_t code)
{
replxx::Replxx::State state(rx.get_state());
const char * line = state.text();
const char * line_end = line + strlen(line);
std::string commented_line;
if (std::find(line, line_end, '\n') != line_end)
{
/// If query has multiple lines, multiline comment is used over
/// commenting each line separately for easier uncomment (though
/// with invoking editor it is simpler to uncomment multiple lines)
///
/// Note, that using multiline comment is OK even with nested
/// comments, since nested comments are supported.
commented_line = fmt::format("/* {} */", state.text());
}
else
{
// In a simplest case use simple comment.
commented_line = fmt::format("-- {}", state.text());
}
rx.set_state(replxx::Replxx::State(commented_line.c_str(), commented_line.size()));
return rx.invoke(Replxx::ACTION::COMMIT_LINE, code);
};
rx.bind_key(Replxx::KEY::meta('#'), insert_comment_action);
}
ReplxxLineReader::~ReplxxLineReader()