Class: Kafo::ProgressBar

Inherits:
Object
  • Object
show all
Defined in:
lib/kafo/progress_bar.rb

Overview

change more methods like #done_message or #print_error

Constant Summary collapse

MONITOR_RESOURCE = 
%r{\w*MONITOR_RESOURCE ([^\]]+\])}
EVALTRACE_START = 
%r{/(.+\]): Starting to evaluate the resource}
EVALTRACE_END = 
%r{/(.+\]): Evaluated in [\d\.]+ seconds}
PREFETCH = 
%r{Prefetching .* resources for}

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ProgressBar

Returns a new instance of ProgressBar.



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# File 'lib/kafo/progress_bar.rb', line 19

def initialize
  @lines                                    = 0
  @all_lines                                = 0
  @total                                    = :unknown
  @resources                                = Set.new
  @term_width                               = terminal_width
  @bar                                      = PowerBar.new
  @bar.settings.tty.infinite.template.main  = infinite_template
  @bar.settings.tty.finite.template.main    = finite_template
  @bar.settings.tty.finite.template.padchar = ' '
  @bar.settings.tty.finite.template.barchar = '.'
  @bar.settings.tty.finite.output           = Proc.new { |s| $stderr.print s }
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/kafo/progress_bar.rb', line 72

def close
  @bar.show({ :msg   => done_message,
              :done  => (@total == :unknown) ? @bar.done + 1 : @total,
              :total => @total }, true)
  @bar.close
end

#print(line) ⇒ Object 



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# File 'lib/kafo/progress_bar.rb', line 79

def print(line)
  @bar.print line
end

#print_error(line) ⇒ Object 



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# File 'lib/kafo/progress_bar.rb', line 83

def print_error(line)
  print line
end

#update(line) ⇒ Object 



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# File 'lib/kafo/progress_bar.rb', line 33

def update(line)
  @all_lines += 1

  # we print every 20th line during installation preparing otherwise only update at EVALTRACE_START
  update_bar = @total == :unknown && @all_lines % 20 == 0
  force_update = false

  if (line_monitor = MONITOR_RESOURCE.match(line))
    @resources << line_monitor[1]
    @total = ((@total == :unknown) ? 1 : @total + 1)
  end

  if (line_start = EVALTRACE_START.match(line))
    if (known_resource = find_known_resource(line_start[1]))
      line = known_resource
      update_bar = true
      force_update = true
    end
  end

  if (line_end = EVALTRACE_END.match(line)) && @total != :unknown && @lines < @total
    if (known_resource = find_known_resource(line_end[1]))
      @resources.delete(known_resource)  # ensure it's only counted once
      @lines += 1
    end
  end

  if PREFETCH =~ line
    update_bar = true
    force_update = true
  end

  if update_bar
    @bar.show({ :msg   => format(line),
                :done  => @lines,
                :total => @total }, force_update)
  end
end