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Parse build args in .template-helpers/generate-tag-details.pl for cleaner/clearer display

This commit is contained in:
Tianon Gravi 2016-03-30 16:16:21 -07:00
parent a4501e98a0
commit ba5ce59734
1 changed files with 17 additions and 3 deletions
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20
.template-helpers/generate-tag-details.pl
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@ -124,16 +124,30 @@ sub get_layer_data {
sub cmd_to_dockerfile {
my ($cmd) = @_;
my @buildArgs;
if (substr($cmd->[0], 0, 1) eq '|') {
# must have some build args for this RUN line
# https://github.com/docker/docker/blob/a7742e437943bb0c59cc9e01fd9f5e68259ad3ec/builder/dockerfile/dispatchers.go#L353-L365
my $n = int(substr(shift(@$cmd), 1)); # number of build args
while ($n > 0) {
my $arg = shift @$cmd;
$arg =~ s/(["\\])/\\$1/g;
my ($var, $val) = split /=/, $arg, 2;
push @buildArgs, '"' . $var . '" => "' . $val .'"';
--$n;
}
}
my $args = join('', map { "# ARG: $_\n" } @buildArgs);
if (scalar(@$cmd) == 3 && $cmd->[0] eq '/bin/sh' && $cmd->[1] eq '-c') {
$cmd = $cmd->[2];
if ($cmd =~ s{^(#[(]nop[)] )}{}) {
return $cmd;
return $args . $cmd;
}
# prefix tabs and 4-space-indents with \ and a newline (for readability), but only if we don't already have any newlines
$cmd =~ s/ ( (?:\t|[ ]{4})+ ) /\\\n$1/xg unless $cmd =~ m!\n!;
return 'RUN ' . $cmd;
return $args . 'RUN ' . $cmd;
}
return 'RUN ' . Mojo::JSON::encode_json($cmd);
return $args . 'RUN ' . Mojo::JSON::encode_json($cmd);
}
my @humanSizeUnits = qw( B KB MB GB TB );