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package StatusLine;
use strict; use warnings;
# enable autoflush on STDOUT.
# this is essential, because we print our statuslines without a newline
$| = 1;
use Exporter 'import';
our @EXPORT = qw/status_init status status_completed/;
my $ansi_clear_line = "\033[2K";
my $ansi_save_cursor = "\0337";
my $ansi_restore_cursor = "\0338";
my %ansi_line_upwards;
my $tests_total;
sub noninteractive {
# CONTINUOUS_INTEGRATION gets set when running under Travis, see
# https://docs.travis-ci.com/user/ci-environment/ and
# https://github.com/travis-ci/travis-ci/issues/1337
return (! -t STDOUT) || (
defined($ENV{CONTINUOUS_INTEGRATION}) &&
$ENV{CONTINUOUS_INTEGRATION} eq 'true');
}
# setup %ansi_line_upwards to map all working displays to the
# specific movement commands and initialize all status lines
sub status_init {
my %args = @_;
my $displays = $args{displays};
$tests_total = $args{tests};
return if noninteractive();
for my $n (1 .. @$displays) {
# since we are moving upwards, get $display in reverse order
my $display = $displays->[-$n];
$ansi_line_upwards{$display} = "\033[$n\101";
# print an empty line for this status line
print "\n";
}
status_completed(0);
}
# generates the status text, prints it in the appropriate line
# and returns it, so it can be used in conjunction with C<Log()>
sub status {
my ($display, $msg) = @_;
my $status = "[$display] $msg";
return $status if noninteractive();
print
$ansi_save_cursor,
$ansi_line_upwards{$display},
$ansi_clear_line,
$status,
$ansi_restore_cursor;
return $status;
}
sub status_completed {
my $num = shift;
return if noninteractive();
print
$ansi_save_cursor,
$ansi_clear_line,
"completed $num of $tests_total tests",
$ansi_restore_cursor;
}
__PACKAGE__ __END__
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