X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=SL%2FMoreCommon.pm;h=e93dd172e155d9a64834157e65bd6d7a0bf06468;hb=8f1fb2d695599019da043422cc3314b2a3f4fede;hp=9669cddb3af623093adad63abfbf3cb56bf314de;hpb=2051590296cad6f6037c5dae5f20993d43953c9d;p=kivitendo-erp.git

diff --git a/SL/MoreCommon.pm b/SL/MoreCommon.pm
index 9669cddb3..e93dd172e 100644
--- a/SL/MoreCommon.pm
+++ b/SL/MoreCommon.pm
@@ -1,20 +1,35 @@
 package SL::MoreCommon;
 
 require Exporter;
-@ISA = qw(Exporter);
+our @ISA = qw(Exporter);
 
-@EXPORT = qw(save_form restore_form);
+our @EXPORT    = qw(save_form restore_form compare_numbers any cross);
+our @EXPORT_OK = qw(ary_union ary_intersect ary_diff listify);
 
 use YAML;
 
+use SL::AM;
+
+use strict;
+
 sub save_form {
   $main::lxdebug->enter_sub();
 
+  my @dont_dump_keys = @_;
+  my %not_dumped_values;
+
+  foreach my $key (@dont_dump_keys) {
+    $not_dumped_values{$key} = $main::form->{$key};
+    delete $main::form->{$key};
+  }
+
   my $old_form = YAML::Dump($main::form);
   $old_form =~ s|!|!:|g;
   $old_form =~ s|\n|!n|g;
   $old_form =~ s|\r|!r|g;
 
+  map { $main::form->{$_} = $not_dumped_values{$_} } keys %not_dumped_values;
+
   $main::lxdebug->leave_sub();
 
   return $old_form;
@@ -23,20 +38,132 @@ sub save_form {
 sub restore_form {
   $main::lxdebug->enter_sub();
 
-  my ($old_form, $no_delete) = @_;
+  my ($old_form, $no_delete, @keep_vars) = @_;
 
-  my $form = $main::form;
+  my $form          = $main::form;
+  my %keep_vars_map = map { $_ => 1 } @keep_vars;
 
-  map { delete $form->{$_}; } keys %{$form} unless ($no_delete);
+  map { delete $form->{$_} if (!$keep_vars_map{$_}); } keys %{$form} unless ($no_delete);
 
   $old_form =~ s|!r|\r|g;
   $old_form =~ s|!n|\n|g;
-  $old_form =~ s|!:|!|g;
+  $old_form =~ s|![!:]|!|g;
 
   my $new_form = YAML::Load($old_form);
-  map { $form->{$_} = $new_form->{$_}; } keys %{$new_form};
+  map { $form->{$_} = $new_form->{$_} if (!$keep_vars_map{$_}) } keys %{ $new_form };
+
+  $main::lxdebug->leave_sub();
+}
+
+sub compare_numbers {
+  $main::lxdebug->enter_sub();
+
+  my $a      = shift;
+  my $a_unit = shift;
+  my $b      = shift;
+  my $b_unit = shift;
+
+  $main::all_units ||= AM->retrieve_units(\%main::myconfig, $main::form);
+  my $units          = $main::all_units;
+
+  if (!$units->{$a_unit} || !$units->{$b_unit} || ($units->{$a_unit}->{base_unit} ne $units->{$b_unit}->{base_unit})) {
+    $main::lxdebug->leave_sub();
+    return undef;
+  }
+
+  $a *= $units->{$a_unit}->{factor};
+  $b *= $units->{$b_unit}->{factor};
 
   $main::lxdebug->leave_sub();
+
+  return $a <=> $b;
+}
+
+sub any (&@) {
+  my $f = shift;
+  return if ! @_;
+  for (@_) {
+    return 1 if $f->();
+  }
+  return 0;
+}
+
+=item cross BLOCK ARRAY ARRAY
+
+Evaluates BLOCK for each combination of elements in ARRAY1 and ARRAY2
+and returns a new list consisting of BLOCK's return values.
+The two elements are set to $a and $b.
+Note that those two are aliases to the original value so changing them
+will modify the input arrays.
+
+  # append each to each
+  @a = qw/a b c/;
+  @b = qw/1 2 3/;
+  @x = cross { "$a$b" } @a, @b;
+  # returns a1, a2, a3, b1, b2, b3, c1, c2, c3
+
+As cross expects an array but returns a list it is not directly chainable
+at the moment. This will be corrected in the future.
+
+=cut
+sub cross(&\@\@) {
+  my $op = shift;
+  use vars qw/@A @B/;
+  local (*A, *B) = @_;    # syms for caller's input arrays
+
+  # Localise $a, $b
+  my ($caller_a, $caller_b) = do {
+    my $pkg = caller();
+    no strict 'refs';
+    \*{$pkg.'::a'}, \*{$pkg.'::b'};
+  };
+
+  local(*$caller_a, *$caller_b);
+
+  # This map expression is also the return value.
+  map { my $a_index = $_;
+    map { my $b_index = $_;
+      # assign to $a, $b as refs to caller's array elements
+      (*$caller_a, *$caller_b) = \($A[$a_index], $B[$b_index]);
+      $op->();    # perform the transformation
+    }  0 .. $#B;
+  }  0 .. $#A;
+}
+
+sub _ary_calc_union_intersect {
+  my ($a, $b) = @_;
+
+  my %count = ();
+
+  foreach my $e (@$a, @$b) { $count{$e}++ }
+
+  my @union = ();
+  my @isect = ();
+  foreach my $e (keys %count) {
+    push @union, $e;
+    push @isect, $e if $count{$e} == 2;
+  }
+
+  return (\@union, \@isect);
+}
+
+sub ary_union {
+  return @{ (_ary_calc_union_intersect @_)[0] };
+}
+
+sub ary_intersect {
+  return @{ (_ary_calc_union_intersect @_)[1] };
+}
+
+sub ary_diff {
+  my ($a, $b) = @_;
+  my %in_b    = map { $_ => 1 } @$b;
+  return grep { !$in_b{$_} } @$a;
+}
+
+sub listify {
+  my @ary = scalar @_ > 1 ? @_ : ref $_[0] eq 'ARRAY' ? @{ $_[0] } : (@_);
+  return wantarray ? @ary : scalar @ary;
 }
 
 1;