Module: Clickhouse::CLI::Console

Extended by:
Client, Console
Included in:
Console
Defined in:
lib/clickhouse/cli/console.rb

Constant Summary collapse

CLR = 
"\r\e[A\e[K"

Constants included from Client

Clickhouse::CLI::Client::HISTORY_FILE

Instance Method Summary collapse

Methods included from Client

alter_history, debug, dump_history, execute, extended, included, interpolate_patterns, load_history, log, numerize_patterns, prettify

Instance Method Details

#process_result(result, log) ⇒ Object 



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# File 'lib/clickhouse/cli/console.rb', line 38

def process_result(result, log)
  if result.is_a?(Clickhouse::Connection::Query::ResultSet)
    if result.size > 0
      array = [result.names].concat(result.to_a)
      lengths = array.inject([]) do |lengths, row|
        row.each_with_index do |value, index|
          length = value.to_s.strip.length
          lengths[index] = [lengths[index].to_i, length].max
        end
        lengths
      end
      puts
      array.each_with_index do |row, i|
        values = [nil]
        lengths.each_with_index do |length, index|
          values << row[index].to_s.ljust(length, " ")
        end
        values << nil
        separator = (i == 0) ? "+" : "|"
        puts values.join(" #{separator} ")
      end
    end
  else
    puts result == true ? "Ok." : (result || "Fail.")
  end

  if log
    puts
    puts log.strip
  end
  puts
end

#readline(buffer = nil) ⇒ Object

private



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# File 'lib/clickhouse/cli/console.rb', line 17

def readline(buffer = nil)
  prompt = buffer ? ":-] " : ":) "
  line = Readline.readline(prompt, true)

  exit! unless line && !%w(exit quit).include?(line = line.strip)

  line = prettify(line)
  sql = [buffer, line].compact.join("\n").gsub(/\s+;$/, ";")

  puts "#{CLR}#{prompt}#{line}"
  alter_history(sql)

  buffer = begin
    execute(sql)
  rescue Clickhouse::Error => e
    puts "ERROR: #{e.message}"
  end

  readline buffer
end

#run!(options = {}) ⇒ Object 



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# File 'lib/clickhouse/cli/console.rb', line 11

def run!(options = {})
  readline
end