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############################################## |
## --------------------------------------------------------------------------- |
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# |
## $Id$ |
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# $Id$ |
## --------------------------------------------------------------------------- |
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# |
## $Log$ |
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# $Log$ |
## Revision 1.9 2003/02/18 19:35:56 joko |
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# Revision 1.2 2002/12/01 04:44:07 joko |
## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
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# + code from Data::Transform::OO |
## |
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# |
## Revision 1.8 2003/02/09 05:10:56 joko |
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# Revision 1.1 2002/11/29 04:49:20 joko |
## + minor update |
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# + initial check-in |
## |
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# |
## Revision 1.7 2003/01/19 03:26:59 joko |
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# Revision 1.1 2002/10/10 03:26:00 cvsjoko |
## + added 'sub deep_copy' - refactored from libp |
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# + new |
## + add 'sub merge' - exported from CPAN's 'Hash::Merge' |
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# |
## |
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############################################## |
## Revision 1.6 2002/12/23 11:27:53 jonen |
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## + changed behavior WATCH! |
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## |
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## Revision 1.5 2002/12/16 19:57:54 joko |
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## + option 'init' |
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## |
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## Revision 1.4 2002/12/05 13:56:49 joko |
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## - var_deref |
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## + expand - more sophisticated dereferencing with callbacks using Iterate |
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## |
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## Revision 1.3 2002/12/03 05:34:55 joko |
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## + bugfix: now utilizing var_utf2iso from Data::Transform::Encode |
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## |
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## Revision 1.2 2002/12/01 04:44:07 joko |
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## + code from Data::Transform::OO |
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## |
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## Revision 1.1 2002/11/29 04:49:20 joko |
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## + initial check-in |
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## |
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## Revision 1.1 2002/10/10 03:26:00 cvsjoko |
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## + new |
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## --------------------------------------------------------------------------- |
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package Data::Transform::Deep; |
package Data::Transform::Deep; |
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our @ISA = qw( Exporter ); |
our @ISA = qw( Exporter ); |
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our @EXPORT_OK = qw( |
our @EXPORT_OK = qw( |
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&var_NumericalHashToArray |
&var_NumericalHashToArray |
|
&var_deref |
|
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&var_mixin |
&var_mixin |
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&object2hash |
&object2hash |
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&hash2object |
&hash2object |
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&refexpr2perlref |
&refexpr2perlref |
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&expand |
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&deep_copy |
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&merge |
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); |
); |
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# &var_deref |
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# &getStructSlotByStringyAddress |
# &getStructSlotByStringyAddress |
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|
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use attributes; |
use attributes; |
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use Data::Dumper; |
use Data::Dumper; |
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use Data::Transform::Encode qw( var_utf2iso var2utf8 scalar2utf8 ); |
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use Hash::Merge qw( merge ); |
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use Iterate; |
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sub var_NumericalHashToArray { |
sub var_NumericalHashToArray { |
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my $vref = shift; |
my $vref = shift; |
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} |
} |
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# FIXME: could this be refactored using expand? |
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# btw: "expand": look at scripts@CPAN (System Administration): |
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# there is a perl make with perl |
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sub var_deref { |
sub var_deref { |
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my $obj = shift; |
my $obj = shift; |
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my $options = shift; |
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my $result; |
my $result; |
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if ((ref $obj) eq 'ARRAY') { |
if ((ref $obj) eq 'ARRAY') { |
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foreach (@{$obj}) { |
foreach (@{$obj}) { |
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my $ref = ref $_; |
my $ref = ref $_; |
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if ($ref) { |
if ($ref) { |
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push(@{$result}, var_deref($_)); |
push(@{$result}, var_deref($_, $options)); |
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#undef $_; |
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} else { |
} else { |
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push(@{$result}, $_); |
#push(@{$result}, $_); |
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push(@{$result}, deep_copy($_)); |
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} |
} |
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#undef $_ if $options->{destroy}; |
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#$options->{destroy}->($_) if $options->{destroy}; |
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} |
} |
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# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
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} else { |
} else { |
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my $key = $_; |
my $key = $_; |
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my $ref = ref $obj->{$_}; |
my $ref = ref $obj->{$_}; |
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if ($ref) { |
if ($ref) { |
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$result->{$_} = var_deref($obj->{$_}); |
$result->{$_} = var_deref($obj->{$_}, $options); |
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#undef $obj->{$_}; |
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} else { |
} else { |
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$result->{$_} = $obj->{$_}; |
#$result->{$_} = $obj->{$_}; |
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$result->{$_} = deep_copy($obj->{$_}); |
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} |
} |
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#undef $obj->{$_} if $options->{destroy}; |
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#$options->{destroy}->($obj->{$_}) if $options->{destroy}; |
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} |
} |
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} |
} |
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#undef $obj if $options->{destroy}; |
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$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
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return $result; |
return $result; |
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} |
} |
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sub expand { |
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my $obj = shift; |
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my $options = shift; |
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my $result; |
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if ((ref $obj) eq 'ARRAY') { |
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IterArray @$obj, sub { |
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my $item; |
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# if current item is a reference ... |
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if (ref $_[0]) { |
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# ... expand structure recursively |
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$item = expand($_[0], $options); |
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# destroy item via seperate callback method (a POST) if requested |
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#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
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# ... assume plain scalar |
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} else { |
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#$item = deep_copy($_[0]); |
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$item = $_[0]; |
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# conversions/encodings |
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$item = scalar2utf8($item) if ($item && $options->{utf8}); |
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} |
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#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
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push(@{$result}, $item); # use item in any case |
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} |
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# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
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} else { |
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IterHash %$obj, sub { |
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my $item; |
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# if current item is a reference ... |
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if (ref $_[1]) { |
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# ... expand structure recursively |
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$item = expand($_[1], $options); |
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# destroy item via seperate callback method (a POST) if requested |
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#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
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# ... assume plain scalar |
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} else { |
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#$item = deep_copy($_[1]); |
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$item = $_[1]; |
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# conversions/encodings |
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$item = scalar2utf8($item) if ($item && $options->{utf8}); |
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} |
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#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
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$result->{$_[0]} = $item; # use item in any case |
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} |
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} |
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# convert all values to utf8 (inside complex struct) |
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# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
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# var2utf8($result) if ($options->{utf8}); |
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# destroy persistent object from memory to be sure to get a fresh one next time |
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#undef $obj if $options->{destroy}; |
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#$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
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#$options->{cb}->{destroy}->($obj) if $options->{destroy}; |
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return $result; |
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} |
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my @indexstack; |
my @indexstack; |
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sub object2hash { |
sub object2hash { |
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my $object = shift; |
my $object = shift; |
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my $options = shift; |
my $options = shift; |
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my $deref = var_deref($object); |
#my $deref = var_deref($object); |
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var2utf8($deref) if ($options->{utf8}); |
my $deref = expand($object, $options); |
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#var2utf8($deref) if ($options->{utf8}); |
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return $deref; |
return $deref; |
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} |
} |
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my $data = shift; |
my $data = shift; |
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my $options = shift; |
my $options = shift; |
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#print "hash2object", "\n"; |
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# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
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# this method corrects this |
# this method corrects this |
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var_NumericalHashToArray($data) if ($options->{php}); |
var_NumericalHashToArray($data) if ($options->{php}); |
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#my $obj = $self->getObject($oid); |
#my $obj = $self->getObject($oid); |
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|
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# mix changes into fresh object and save it back |
# mix changes into fresh object and save it back |
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hash2object_traverse_mixin($object, $data); |
hash2object_traverse_mixin($object, $data, 0, $options); |
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|
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# done in core mixin function? |
# done in core mixin function? |
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#$self->{storage}->update($obj); |
#$self->{storage}->update($obj); |
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my $object = shift; |
my $object = shift; |
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my $data = shift; |
my $data = shift; |
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my $bool_recursion = shift; |
my $bool_recursion = shift; |
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my $options = shift; |
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# clear our key - stack if we are called from user-code (non-recursively) |
# clear our key - stack if we are called from user-code (non-recursively) |
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@indexstack = () if (!$bool_recursion); |
@indexstack = () if (!$bool_recursion); |
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# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
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my @fields; |
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# loop through fields of object (Tangram-object) |
# loop through fields of object (Tangram-object) |
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foreach (keys %{$object}) { |
@fields = keys %{$object}; |
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push @indexstack, $_; |
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# loop through fields of to.be.injected-data (arbitrary Perl-data-structure) |
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@fields = keys %{$data} if $options->{init}; |
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# @fields = keys %{$data} if $options->{mixin}; |
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foreach (@fields) { |
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my $field = $_; |
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push @indexstack, $field; |
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|
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# determine type of object |
# determine type of object |
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my $ref = ref $object->{$_}; |
my $ref = ref $object->{$field}; |
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# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
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if ($ref) { |
if ($ref) { |
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hash2object_traverse_mixin($object->{$_}, $data, 1); |
hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
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} else { |
} else { |
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my $val = getStructSlotByStringyAddress($data, \@indexstack); |
my $val = getStructSlotByStringyAddress($data, \@indexstack); |
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$object->{$_} = $val; |
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#print Dumper($options); |
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my $field_target = $field; |
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if (my $pattern = $options->{pattern_strip_key}) { |
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print "pattern: $pattern", "\n"; |
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$field_target =~ s/$pattern//; |
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print "field: $field_target", "\n"; |
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} |
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$object->{$field_target} = $val if defined $val; |
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} |
} |
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pop @indexstack; |
pop @indexstack; |
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} |
} |
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push @indexstack, $i; |
push @indexstack, $i; |
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my $ref = ref $_; |
my $ref = ref $_; |
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# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
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if ($ref && $_) { |
# if ($ref && $_) { |
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hash2object_traverse_mixin($_, $data, 1); |
if ($ref) { |
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hash2object_traverse_mixin($_, $data, 1, $options); |
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} else { |
} else { |
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$object->[$i] = $_; |
$object->[$i] = $_ if defined $_; |
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} |
} |
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pop @indexstack; |
pop @indexstack; |
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$i++; |
$i++; |
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# this function seems to do similar stuff like these below (refexpr2perlref & co.) |
# this function seems to do similar stuff like these below (refexpr2perlref & co.) |
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# TODO: maybe this mechanism can be replaced completely through some nice module from CPAN .... ? ;-) |
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sub getStructSlotByStringyAddress { |
sub getStructSlotByStringyAddress { |
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my $var = shift; |
my $var = shift; |
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my $indexstack_ref = shift; |
my $indexstack_ref = shift; |
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|
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my $obj = shift; |
my $obj = shift; |
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my $expr = shift; |
my $expr = shift; |
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my $callbackMap = shift; |
my $values = shift; |
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my $delimiter = shift; |
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$delimiter ||= '->'; |
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my $value; |
my $value; |
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# detect for callback (code-reference) |
# detect for callback (code-reference) |
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if (ref($expr) eq 'CODE') { |
if (ref($expr) eq 'CODE') { |
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$value = &$expr($obj); |
$value = &$expr($obj); |
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|
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} elsif ($expr =~ m/->/) { |
} elsif ($expr =~ m/$delimiter/) { |
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# use expr as complex object reference declaration (obj->subObj->subSubObj->0->attribute) |
# use expr as complex object reference declaration (obj->subObj->subSubObj->0->attribute) |
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(my $objPerlRefString, my $parts) = refexpr2perlref_parts($expr); |
(my $objPerlRefString, my $parts) = refexpr2perlref_parts($expr, $delimiter); |
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#print "\n", "expr: $expr"; |
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#print "\n", "objPerlRefString: $objPerlRefString"; |
# trace |
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$value = eval('$obj' . '->' . $objPerlRefString); |
#print "expr: $expr", "\n"; |
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#print "objPerlRefString: $objPerlRefString", "\n"; |
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my $evstr = '$obj' . '->' . $objPerlRefString; |
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# trace |
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#print "eval: $evstr", "\n"; |
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$value = eval($evstr); |
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die ($@) if $@; |
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# if value isn't set, try to set it |
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my $callbackMap; |
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if ($values) { |
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#if (ref $values eq 'HASH') { |
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if (ref $values eq 'Data::Map') { |
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$callbackMap = $values->getAttributes(); |
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} else { |
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# apply $values as single value to referenced slot |
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#print "APPLY!", "\n"; |
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eval('$obj' . '->' . $objPerlRefString . ' = $values;'); |
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die ($@) if $@; |
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} |
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} |
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# if value isn't set, try to "fallback" to callbackMap |
# determine $values - if it's a hashref, use it as a "valueMap" |
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# "fallback" to callbackMap |
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# callbacks are applied this way: |
# callbacks are applied this way: |
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# take the last element of the expression parts and check if this string exists as a key in the callback-map |
# take the last element of the expression parts and check if this string exists as a key in the callback-map |
466 |
if (!$value && $callbackMap) { |
if (!$value && $callbackMap) { |
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|
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sub refexpr2perlref_parts { |
sub refexpr2perlref_parts { |
493 |
my $expr = shift; |
my $expr = shift; |
494 |
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my $delimiter = shift; |
495 |
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$delimiter = quotemeta($delimiter); |
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|
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# split expression by dereference operators first |
# split expression by dereference operators first |
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my @parts_pure = split(/->/, $expr); |
my @parts_pure = split(/$delimiter/, $expr); |
500 |
|
|
501 |
# wrap []'s around each part, if it consists of numeric characters only (=> numeric = array-index), |
# wrap []'s around each part, if it consists of numeric characters only (=> numeric = array-index), |
502 |
# use {}'s, if there are word-characters in it (=> alphanumeric = hash-key) |
# use {}'s, if there are word-characters in it (=> alphanumeric = hash-key) |
509 |
return (join('->', @parts_capsule), \@parts_pure); |
return (join('->', @parts_capsule), \@parts_pure); |
510 |
} |
} |
511 |
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|
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# ACK's go to ... |
513 |
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sub deep_copy { |
514 |
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my $this = shift; |
515 |
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if (not ref $this) { |
516 |
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$this; |
517 |
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} elsif (ref $this eq "ARRAY") { |
518 |
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[map deep_copy($_), @$this]; |
519 |
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} elsif (ref $this eq "HASH") { |
520 |
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+{map { $_ => deep_copy($this->{$_}) } keys %$this}; |
521 |
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} elsif (ref $this eq "CODE") { |
522 |
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$this; |
523 |
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#} else { die "deep_copy asks: what type is $this?" } |
524 |
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} else { print "deep_copy asks: what type is $this?", "\n"; } |
525 |
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} |
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527 |
1; |
1; |