tools/winapi_check/output.pm

   1 package output;
   2
   3 use strict;
   4
   5 sub new {
   6     my $proto = shift;
   7     my $class = ref($proto) || $proto;
   8     my $self  = {};
   9     bless ($self, $class);
  10
  11     my $progress = \${$self->{PROGRESS}};
  12     my $last_progress = \${$self->{LAST_PROGRESS}};
  13     my $progress_count = \${$self->{PROGRESS_COUNT}};
  14
  15     $$progress = "";
  16     $$last_progress = "";
  17     $progress_count = 0;
  18
  19     return $self;
  20 }
  21
  22
  23 sub show_progress {
  24     my $self = shift;
  25     my $progress = \${$self->{PROGRESS}};
  26     my $last_progress = \${$self->{LAST_PROGRESS}};
  27     my $progress_count = \${$self->{PROGRESS_COUNT}};
  28
  29     $$progress_count++;
  30
  31     if($$progress_count > 0 && $$progress) {
  32         print STDERR $$progress;
  33         $$last_progress = $$progress;
  34     }
  35 }
  36
  37 sub hide_progress  {
  38     my $self = shift;
  39     my $progress = \${$self->{PROGRESS}};
  40     my $last_progress = \${$self->{LAST_PROGRESS}};
  41     my $progress_count = \${$self->{PROGRESS_COUNT}};
  42
  43     $$progress_count--;
  44
  45     if($$last_progress) {
  46         my $message;
  47         for (1..length($$last_progress)) {
  48             $message .= "\b \b";
  49         }
  50         print STDERR $message;
  51         undef $$last_progress;
  52     }
  53 }
  54
  55 sub update_progress {
  56     my $self = shift;
  57     my $progress = \${$self->{PROGRESS}};
  58     my $last_progress = \${$self->{LAST_PROGRESS}};
  59
  60     my $prefix = "";
  61     my $suffix = "";
  62     if($$last_progress) {
  63         for (1..length($$last_progress)) {
  64             $prefix .= "\b";
  65         }
  66
  67         my $diff = length($$last_progress)-length($$progress);
  68         if($diff > 0) {
  69             for (1..$diff) {
  70                 $suffix .= " ";
  71             }
  72             for (1..$diff) {
  73                 $suffix .= "\b";
  74             }
  75         }
  76     }
  77     print STDERR $prefix . $$progress . $suffix;
  78     $$last_progress = $$progress;
  79 }
  80
  81 sub progress {
  82     my $self = shift;
  83     my $progress = \${$self->{PROGRESS}};
  84
  85     $$progress = shift;
  86
  87     $self->update_progress;
  88 }
  89
  90 sub write {
  91     my $self = shift;
  92
  93     my $message = shift;
  94
  95
  96     $self->hide_progress;
  97     print $message;
  98     $self->show_progress;
  99 }
 100
 101 1;