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[scpubgit/Q-Branch.git] / maint / podregen

#!/usr/bin/env perl

use lib 'lib';
use strictures 2;
use Data::Dumper::Compact;
use SQL::Abstract::Formatter;
use SQL::Abstract::ExtraClauses;

my $ddc = Data::Dumper::Compact->new(max_width => 72);
my $sqla = SQL::Abstract::ExtraClauses->new(
  lazy_join_sql_parts => 1,
);
my $sqlaf = SQL::Abstract::Formatter->new(max_width => 72);

while (1) {
  my $line = <STDIN>;
  exit 0 unless defined $line;
  print $line;
  last if $line =~ /\A__END__/;
}

my $slurp = do { local $/; <STDIN> };

my ($expr_re, $aqt_re, $query_re) =
  map qr/(?sm:(.*?)( +)(# ${_}\n)(?:\n|(.*?)\n\n))/, qw(expr aqt query);

sub reformat {
  my ($thing, $indent) = @_;
  my $thing_ddc = $ddc->dump($thing);
  $thing_ddc =~ s/^/$indent/mg;
  return $thing_ddc;
}

sub seval { eval('+('.$_[0].')') or die "seval: $_[0]: $@" }

while ($slurp =~ m/\G$expr_re/gc) {
  my ($pre, $indent, $type, $expr_str) = ($1, $2, $3, $4);
  print $pre.$indent.$type;
  print reformat(my $expr = seval($expr_str), $indent);
  print "\n";
  if ($slurp =~ m/\G$aqt_re/gc) {
    my ($apre, $aindent, $atype) = ($1, $2, $3);
    print $apre.$aindent.$atype;
    print reformat($sqla->expand_expr($expr), $aindent);
    print "\n";
  }
  die unless $slurp =~ m/\G$query_re/g;
  my ($qpre, $qindent, $qtype) = ($1, $2, $3);
  print $qpre.$qindent.$qtype;
  my ($sql, @bind) = $sqla->render_statement($expr);
  my $fsql = $sqlaf->format(@$sql);
  $fsql =~ s/^/$indent/mg;
  print $fsql."\n";
  print reformat(\@bind, $qindent);
  print "\n";
}

$slurp =~ /\G(.*)$/sm;

print $1;