2 |
## $Id$ |
## $Id$ |
3 |
## --------------------------------------------------------------------------- |
## --------------------------------------------------------------------------- |
4 |
## $Log$ |
## $Log$ |
5 |
|
## Revision 1.10 2003/02/20 20:48:00 joko |
6 |
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## - refactored lots of code to Data::Code::Ref |
7 |
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## + alternative 'deep_copy' implementation |
8 |
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## |
9 |
## Revision 1.9 2003/02/18 19:35:56 joko |
## Revision 1.9 2003/02/18 19:35:56 joko |
10 |
## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
11 |
## |
## |
48 |
require Exporter; |
require Exporter; |
49 |
our @ISA = qw( Exporter ); |
our @ISA = qw( Exporter ); |
50 |
our @EXPORT_OK = qw( |
our @EXPORT_OK = qw( |
|
&var_NumericalHashToArray |
|
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&var_mixin |
|
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&object2hash |
|
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&hash2object |
|
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&refexpr2perlref |
|
51 |
&expand |
&expand |
52 |
&deep_copy |
&deep_copy |
53 |
&merge |
&merge_to |
54 |
); |
); |
55 |
# &var_deref |
|
|
# &getStructSlotByStringyAddress |
|
56 |
|
|
57 |
use attributes; |
use attributes; |
58 |
use Data::Dumper; |
use Data::Dumper; |
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use Data::Transform::Encode qw( var_utf2iso var2utf8 scalar2utf8 ); |
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|
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use Hash::Merge qw( merge ); |
|
59 |
use Iterate; |
use Iterate; |
60 |
|
|
61 |
sub var_NumericalHashToArray { |
use Data::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar ); |
62 |
|
use Data::Code::Ref qw( ref_slot ); |
63 |
|
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64 |
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sub numhash2list { |
65 |
my $vref = shift; |
my $vref = shift; |
66 |
#my $context = shift; |
#my $context = shift; |
67 |
if (ref $vref eq 'HASH') { |
if (ref $vref eq 'HASH') { |
77 |
} |
} |
78 |
$vref->{$_} = \@arr; |
$vref->{$_} = \@arr; |
79 |
} |
} |
80 |
var_NumericalHashToArray($vref->{$_}); |
numhash2list($vref->{$_}); |
81 |
} |
} |
82 |
# } else { |
# } else { |
83 |
# #$vref->{$_} = scalar2iso($vref->{$_}); |
# #$vref->{$_} = scalar2iso($vref->{$_}); |
90 |
# FIXME: could this be refactored using expand? |
# FIXME: could this be refactored using expand? |
91 |
# btw: "expand": look at scripts@CPAN (System Administration): |
# btw: "expand": look at scripts@CPAN (System Administration): |
92 |
# there is a perl make with perl |
# there is a perl make with perl |
93 |
sub var_deref { |
sub _var_deref_test { |
94 |
my $obj = shift; |
my $obj = shift; |
95 |
my $options = shift; |
my $options = shift; |
96 |
my $result; |
my $result; |
135 |
my $options = shift; |
my $options = shift; |
136 |
my $result; |
my $result; |
137 |
|
|
138 |
if ((ref $obj) eq 'ARRAY') { |
#print "ref: ", ref $obj, "\n"; |
139 |
|
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140 |
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if (ref $obj eq 'ARRAY') { |
141 |
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|
142 |
IterArray @$obj, sub { |
IterArray @$obj, sub { |
143 |
my $item; |
my $item; |
153 |
#$item = deep_copy($_[0]); |
#$item = deep_copy($_[0]); |
154 |
$item = $_[0]; |
$item = $_[0]; |
155 |
# conversions/encodings |
# conversions/encodings |
156 |
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
157 |
|
$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
158 |
} |
} |
159 |
#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
160 |
push(@{$result}, $item); # use item in any case |
push(@{$result}, $item); # use item in any case |
161 |
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162 |
} |
} |
163 |
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164 |
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} elsif (ref $obj eq 'CODE') { |
165 |
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#print Dumper($obj); |
166 |
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#exit; |
167 |
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168 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
169 |
} else { |
} elsif (ref $obj) { |
170 |
|
|
171 |
IterHash %$obj, sub { |
IterHash %$obj, sub { |
172 |
my $item; |
my $item; |
183 |
#$item = deep_copy($_[1]); |
#$item = deep_copy($_[1]); |
184 |
$item = $_[1]; |
$item = $_[1]; |
185 |
# conversions/encodings |
# conversions/encodings |
186 |
$item = scalar2utf8($item) if ($item && $options->{utf8}); |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
187 |
|
$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
188 |
} |
} |
189 |
#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
190 |
$result->{$_[0]} = $item; # use item in any case |
$result->{$_[0]} = $item; # use item in any case |
191 |
} |
} |
192 |
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193 |
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} else { |
194 |
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#die ("not a reference!"); |
195 |
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$result = $obj; |
196 |
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197 |
} |
} |
198 |
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199 |
# convert all values to utf8 (inside complex struct) |
# convert all values to utf8 (inside complex struct) |
211 |
|
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212 |
|
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213 |
my @indexstack; |
my @indexstack; |
214 |
sub var_traverse_mixin_update { |
sub _var_traverse_mixin_update_old { |
215 |
my $obj = shift; |
my $obj = shift; |
216 |
my $data = shift; |
my $data = shift; |
217 |
my $bool_recursion = shift; |
my $bool_recursion = shift; |
255 |
#return $result; |
#return $result; |
256 |
} |
} |
257 |
|
|
258 |
sub object2hash { |
sub merge_to { |
259 |
my $object = shift; |
_hash2object(@_); |
260 |
my $options = shift; |
# TODO: |
261 |
#my $deref = var_deref($object); |
# re-implement using CPAN's "Iterate". |
|
my $deref = expand($object, $options); |
|
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#var2utf8($deref) if ($options->{utf8}); |
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return $deref; |
|
262 |
} |
} |
263 |
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264 |
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265 |
# todo: maybe do diff(s) here sometimes!? |
# todo: maybe do diff(s) here sometimes!? |
266 |
sub hash2object { |
sub _hash2object { |
267 |
my $object = shift; |
my $object = shift; |
268 |
my $data = shift; |
my $data = shift; |
269 |
my $options = shift; |
my $options = shift; |
272 |
|
|
273 |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
274 |
# this method corrects this |
# this method corrects this |
275 |
var_NumericalHashToArray($data) if ($options->{php}); |
numhash2list($data) if ($options->{php}); |
276 |
|
|
277 |
# utf8-conversion/-encoding (essential for I18N) |
# utf8-conversion/-encoding (essential for I18N) |
278 |
var_utf2iso($data) if ($options->{utf8}); |
var_utf2iso($data) if ($options->{utf8}); |
284 |
#my $obj = $self->getObject($oid); |
#my $obj = $self->getObject($oid); |
285 |
|
|
286 |
# mix changes into fresh object and save it back |
# mix changes into fresh object and save it back |
287 |
hash2object_traverse_mixin($object, $data, 0, $options); |
_hash2object_traverse_mixin($object, $data, 0, $options); |
288 |
|
|
289 |
# done in core mixin function? |
# done in core mixin function? |
290 |
#$self->{storage}->update($obj); |
#$self->{storage}->update($obj); |
307 |
#my @indexstack; |
#my @indexstack; |
308 |
|
|
309 |
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
310 |
sub hash2object_traverse_mixin { |
sub _hash2object_traverse_mixin { |
311 |
my $object = shift; |
my $object = shift; |
312 |
my $data = shift; |
my $data = shift; |
313 |
my $bool_recursion = shift; |
my $bool_recursion = shift; |
325 |
# what's exactly done here? hmmm.... it works ;) |
# what's exactly done here? hmmm.... it works ;) |
326 |
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
327 |
# extend! check! |
# extend! check! |
328 |
if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
|
329 |
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#print attributes::reftype($object), "\n"; |
330 |
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331 |
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# V1 |
332 |
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#if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
333 |
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# V2 |
334 |
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my $reftype = attributes::reftype($object); |
335 |
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#print "reftype: '$reftype'", "\n"; |
336 |
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if ($reftype eq 'HASH') { |
337 |
|
|
338 |
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
339 |
|
|
353 |
my $ref = ref $object->{$field}; |
my $ref = ref $object->{$field}; |
354 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
355 |
if ($ref) { |
if ($ref) { |
356 |
hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
_hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
357 |
} else { |
} else { |
358 |
my $val = getStructSlotByStringyAddress($data, \@indexstack); |
my $val = ref_slot($data, \@indexstack); |
359 |
|
|
360 |
#print Dumper($options); |
#print Dumper($options); |
361 |
my $field_target = $field; |
my $field_target = $field; |
398 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
399 |
# if ($ref && $_) { |
# if ($ref && $_) { |
400 |
if ($ref) { |
if ($ref) { |
401 |
hash2object_traverse_mixin($_, $data, 1, $options); |
_hash2object_traverse_mixin($_, $data, 1, $options); |
402 |
} else { |
} else { |
403 |
$object->[$i] = $_ if defined $_; |
$object->[$i] = $_ if defined $_; |
404 |
} |
} |
405 |
pop @indexstack; |
pop @indexstack; |
406 |
$i++; |
$i++; |
407 |
} |
} |
408 |
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409 |
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=pod |
410 |
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# object? |
411 |
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} else { |
412 |
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print "reference: ", ref $object, "\n"; |
413 |
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print "reftype: ", $reftype, "\n"; |
414 |
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die(__PACKAGE__ . "->_hash2object_traverse_mixin: can not handle this!"); |
415 |
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=cut |
416 |
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417 |
} |
} |
418 |
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419 |
} |
} |
420 |
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421 |
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422 |
# this function seems to do similar stuff like these below (refexpr2perlref & co.) |
# ACK's go to Randal L. Schwartz <merlyn@stonehenge.com> |
423 |
# TODO: maybe this mechanism can be replaced completely through some nice module from CPAN .... ? ;-) |
# on the website: |
424 |
sub getStructSlotByStringyAddress { |
# This text is copyright by Miller-Freeman, Inc., and is used with their permission. |
425 |
my $var = shift; |
# Further distribution or use is not permitted. |
426 |
my $indexstack_ref = shift; |
# please visit http://www.stonehenge.com/merlyn/UnixReview/col30.html |
427 |
my @indexstack = @{$indexstack_ref}; |
sub deep_copy1 { |
428 |
my $joiner = '->'; |
my $this = shift; |
429 |
my @evlist; |
if (not ref $this) { |
430 |
foreach (@indexstack) { |
$this; |
431 |
my $elem; |
} elsif (ref $this eq "ARRAY") { |
432 |
if ($_ =~ m/\d+/) { $elem = "[$_]"; } |
[map deep_copy1($_), @$this]; |
433 |
if ($_ =~ m/\D+/) { $elem = "{$_}"; } |
} elsif (ref $this eq "HASH") { |
434 |
push @evlist, $elem; |
+{map { $_ => deep_copy1($this->{$_}) } keys %$this}; |
435 |
} |
} elsif (ref $this eq "CODE") { |
436 |
my $evstring = join($joiner, @evlist); |
$this; |
437 |
$evstring = 'return $var->' . $evstring . ';'; |
} else { die "deep_copy1 asks: what type is $this?" } |
438 |
#print "ev: $evstring\n"; |
#} else { print "deep_copy asks: what type is $this?", "\n"; } |
|
return eval($evstring); |
|
439 |
} |
} |
440 |
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441 |
|
# ACK's go to Andrew Pitonyak |
442 |
sub refexpr2perlref { |
# Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org) |
443 |
|
# please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html |
444 |
my $obj = shift; |
sub deep_copy2 { |
445 |
my $expr = shift; |
|
446 |
my $values = shift; |
# if not defined then return it |
447 |
my $delimiter = shift; |
return undef if $#_ < 0 || !defined( $_[0] ); |
448 |
|
|
449 |
$delimiter ||= '->'; |
# if not a reference then return the parameter |
450 |
|
return $_[0] if !ref( $_[0] ); |
451 |
my $value; |
my $obj = shift; |
452 |
# detect for callback (code-reference) |
if ( UNIVERSAL::isa( $obj, 'SCALAR' ) ) { |
453 |
if (ref($expr) eq 'CODE') { |
my $temp = deep_copy2($$obj); |
454 |
$value = &$expr($obj); |
return \$temp; |
455 |
|
} |
456 |
} elsif ($expr =~ m/$delimiter/) { |
elsif ( UNIVERSAL::isa( $obj, 'HASH' ) ) { |
457 |
# use expr as complex object reference declaration (obj->subObj->subSubObj->0->attribute) |
my $temp_hash = {}; |
458 |
(my $objPerlRefString, my $parts) = refexpr2perlref_parts($expr, $delimiter); |
foreach my $key ( keys %$obj ) { |
459 |
|
if ( !defined( $obj->{$key} ) || !ref( $obj->{$key} ) ) { |
460 |
# trace |
$temp_hash->{$key} = $obj->{$key}; |
461 |
#print "expr: $expr", "\n"; |
} |
462 |
#print "objPerlRefString: $objPerlRefString", "\n"; |
else { |
463 |
|
$temp_hash->{$key} = deep_copy2( $obj->{$key} ); |
464 |
my $evstr = '$obj' . '->' . $objPerlRefString; |
} |
465 |
|
} |
466 |
# trace |
return $temp_hash; |
|
#print "eval: $evstr", "\n"; |
|
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|
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$value = eval($evstr); |
|
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die ($@) if $@; |
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|
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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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} |
|
467 |
} |
} |
468 |
|
elsif ( UNIVERSAL::isa( $obj, 'ARRAY' ) ) { |
469 |
# determine $values - if it's a hashref, use it as a "valueMap" |
my $temp_array = []; |
470 |
# "fallback" to callbackMap |
foreach my $array_val (@$obj) { |
471 |
# callbacks are applied this way: |
if ( !defined($array_val) || !ref($array_val) ) { |
472 |
# take the last element of the expression parts and check if this string exists as a key in the callback-map |
push ( @$temp_array, $array_val ); |
473 |
if (!$value && $callbackMap) { |
} |
474 |
#print Dumper($callbackMap); |
else { |
475 |
|
push ( @$temp_array, deep_copy2($array_val) ); |
476 |
# prepare needle |
} |
477 |
my @parts = @$parts; |
} |
478 |
my $count = $#parts; |
return $temp_array; |
|
my $needle = $parts[$count]; |
|
|
|
|
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# prepare haystack |
|
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my @haystack = keys %$callbackMap; |
|
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if (grep($needle, @haystack)) { |
|
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$value = $callbackMap->{$needle}->(); |
|
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#print "value: ", $value, "\n"; |
|
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} |
|
479 |
} |
} |
480 |
|
|
481 |
} else { |
# ?? I am uncertain about this one |
482 |
# use expr as simple scalar key (attributename) |
elsif ( UNIVERSAL::isa( $obj, 'REF' ) ) { |
483 |
$value = $obj->{$expr}; |
my $temp = deep_copy2($$obj); |
484 |
} |
return \$temp; |
485 |
|
} |
|
return $value; |
|
|
|
|
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} |
|
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|
|
|
|
|
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sub refexpr2perlref_parts { |
|
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my $expr = shift; |
|
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my $delimiter = shift; |
|
|
|
|
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$delimiter = quotemeta($delimiter); |
|
|
|
|
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# split expression by dereference operators first |
|
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my @parts_pure = split(/$delimiter/, $expr); |
|
|
|
|
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# wrap []'s around each part, if it consists of numeric characters only (=> numeric = array-index), |
|
|
# use {}'s, if there are word-characters in it (=> alphanumeric = hash-key) |
|
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my @parts_capsule = @parts_pure; |
|
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map { |
|
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m/^\d+$/ && ($_ = "[$_]") || ($_ = "{$_}"); |
|
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} @parts_capsule; |
|
486 |
|
|
487 |
# join parts with dereference operators together again and return built string |
# I guess that it is either CODE, GLOB or LVALUE |
488 |
return (join('->', @parts_capsule), \@parts_pure); |
else { |
489 |
|
return $obj; |
490 |
|
} |
491 |
} |
} |
492 |
|
|
|
# ACK's go to ... |
|
493 |
sub deep_copy { |
sub deep_copy { |
494 |
my $this = shift; |
deep_copy2(@_); |
|
if (not ref $this) { |
|
|
$this; |
|
|
} elsif (ref $this eq "ARRAY") { |
|
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[map deep_copy($_), @$this]; |
|
|
} elsif (ref $this eq "HASH") { |
|
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+{map { $_ => deep_copy($this->{$_}) } keys %$this}; |
|
|
} elsif (ref $this eq "CODE") { |
|
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$this; |
|
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#} else { die "deep_copy asks: what type is $this?" } |
|
|
} else { print "deep_copy asks: what type is $this?", "\n"; } |
|
495 |
} |
} |
496 |
|
|
497 |
1; |
1; |
498 |
|
__END__ |