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Merge pull request #22634 from ClickHouse/client-improve-usability

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Improve usability of clickhouse-client
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alexey-milovidov 2021-04-05 09:00:29 +03:00 committed by GitHub
commit 92f57fd669
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1 changed files with 14 additions and 0 deletions
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14
programs/client/Client.cpp
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@ -527,7 +527,10 @@ private:
std::cerr << std::fixed << std::setprecision(3);
if (is_interactive)
{
clearTerminal();
showClientVersion();
}
is_default_format = !config().has("vertical") && !config().has("format");
if (config().has("vertical"))
@ -2467,6 +2470,17 @@ private:
std::cout << DBMS_NAME << " client version " << VERSION_STRING << VERSION_OFFICIAL << "." << std::endl;
}
static void clearTerminal()
{
/// Clear from cursor until end of screen.
/// It is needed if garbage is left in terminal.
/// Show cursor. It can be left hidden by invocation of previous programs.
/// A test for this feature: perl -e 'print "x"x100000'; echo -ne '\033[0;0H\033[?25l'; clickhouse-client
std::cout <<
"\033[0J"
"\033[?25h";
}
public:
void init(int argc, char ** argv)
{