1 |
joko |
1.7 |
## --------------------------------------------------------------------------- |
2 |
joko |
1.21 |
## $Id: Deep.pm,v 1.20 2003/04/04 17:31:23 joko Exp $ |
3 |
joko |
1.7 |
## --------------------------------------------------------------------------- |
4 |
joko |
1.8 |
## $Log: Deep.pm,v $ |
5 |
joko |
1.21 |
## Revision 1.20 2003/04/04 17:31:23 joko |
6 |
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## minor update to 'childObj2string' |
7 |
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## |
8 |
joko |
1.20 |
## Revision 1.19 2003/03/28 03:11:25 jonen |
9 |
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## + bugfix |
10 |
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## |
11 |
jonen |
1.19 |
## Revision 1.18 2003/03/28 03:07:26 jonen |
12 |
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## + minor changes |
13 |
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## |
14 |
jonen |
1.18 |
## Revision 1.17 2003/03/27 15:17:07 joko |
15 |
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## namespace fixes for Data::Mungle::* |
16 |
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## |
17 |
joko |
1.17 |
## Revision 1.16 2003/03/27 15:04:52 joko |
18 |
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## minor update: comment |
19 |
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## |
20 |
joko |
1.16 |
## Revision 1.15 2003/02/27 14:39:48 jonen |
21 |
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## + fixed bug at _hash2object() |
22 |
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## |
23 |
jonen |
1.15 |
## Revision 1.14 2003/02/22 17:13:55 jonen |
24 |
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## + added function 'childObject2string()' to encode 'child'-references to option related string |
25 |
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## + use new option at 'expand()' for replacing 'childObject2string' |
26 |
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## |
27 |
jonen |
1.14 |
## Revision 1.13 2003/02/21 01:48:50 joko |
28 |
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## renamed core function |
29 |
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## |
30 |
joko |
1.13 |
## Revision 1.12 2003/02/20 22:45:19 joko |
31 |
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## fix regarding new deep_copy |
32 |
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## |
33 |
joko |
1.12 |
## Revision 1.11 2003/02/20 21:13:54 joko |
34 |
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## - removed implementation of deep_copy2 - get this from the Pitonyak namespace (now cloned to repository) |
35 |
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## |
36 |
joko |
1.11 |
## Revision 1.10 2003/02/20 20:48:00 joko |
37 |
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## - refactored lots of code to Data::Code::Ref |
38 |
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## + alternative 'deep_copy' implementation |
39 |
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## |
40 |
joko |
1.10 |
## Revision 1.9 2003/02/18 19:35:56 joko |
41 |
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## +- modified 'sub refexpr2perlref': now can get the $delimiter passed, too |
42 |
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## |
43 |
joko |
1.9 |
## Revision 1.8 2003/02/09 05:10:56 joko |
44 |
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## + minor update |
45 |
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## |
46 |
joko |
1.8 |
## Revision 1.7 2003/01/19 03:26:59 joko |
47 |
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## + added 'sub deep_copy' - refactored from libp |
48 |
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## + add 'sub merge' - exported from CPAN's 'Hash::Merge' |
49 |
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## |
50 |
joko |
1.7 |
## Revision 1.6 2002/12/23 11:27:53 jonen |
51 |
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## + changed behavior WATCH! |
52 |
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## |
53 |
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## Revision 1.5 2002/12/16 19:57:54 joko |
54 |
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## + option 'init' |
55 |
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## |
56 |
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## Revision 1.4 2002/12/05 13:56:49 joko |
57 |
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## - var_deref |
58 |
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## + expand - more sophisticated dereferencing with callbacks using Iterate |
59 |
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## |
60 |
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## Revision 1.3 2002/12/03 05:34:55 joko |
61 |
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## + bugfix: now utilizing var_utf2iso from Data::Transform::Encode |
62 |
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## |
63 |
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## Revision 1.2 2002/12/01 04:44:07 joko |
64 |
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## + code from Data::Transform::OO |
65 |
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## |
66 |
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## Revision 1.1 2002/11/29 04:49:20 joko |
67 |
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## + initial check-in |
68 |
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## |
69 |
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## Revision 1.1 2002/10/10 03:26:00 cvsjoko |
70 |
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## + new |
71 |
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## --------------------------------------------------------------------------- |
72 |
joko |
1.1 |
|
73 |
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|
74 |
joko |
1.17 |
package Data::Mungle::Transform::Deep; |
75 |
joko |
1.1 |
|
76 |
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use strict; |
77 |
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use warnings; |
78 |
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79 |
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require Exporter; |
80 |
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our @ISA = qw( Exporter ); |
81 |
joko |
1.2 |
our @EXPORT_OK = qw( |
82 |
joko |
1.4 |
&expand |
83 |
joko |
1.7 |
&deep_copy |
84 |
joko |
1.10 |
&merge_to |
85 |
joko |
1.1 |
); |
86 |
joko |
1.10 |
|
87 |
joko |
1.1 |
|
88 |
|
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use attributes; |
89 |
joko |
1.2 |
use Data::Dumper; |
90 |
joko |
1.10 |
use Iterate; |
91 |
joko |
1.7 |
|
92 |
joko |
1.12 |
use Pitonyak::DeepCopy; |
93 |
joko |
1.21 |
use Data::Mungle::Transform::Encode qw( latin_to_utf8 latin_to_utf8_scalar utf8_to_latin utf8_to_latin_scalar twingle_reference ); |
94 |
joko |
1.17 |
use Data::Mungle::Code::Ref qw( ref_slot ); |
95 |
joko |
1.1 |
|
96 |
joko |
1.10 |
sub numhash2list { |
97 |
joko |
1.1 |
my $vref = shift; |
98 |
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#my $context = shift; |
99 |
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if (ref $vref eq 'HASH') { |
100 |
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foreach (keys %{$vref}) { |
101 |
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# if ((ref $vref->{$_}) =~ m/HASH/) { |
102 |
|
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if ((ref $vref->{$_}) =~ m/HASH/) { |
103 |
|
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if ($vref->{$_}{0}) { # might be a numerical-indexed array |
104 |
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#print "000\n"; |
105 |
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#print "context: $context\n"; |
106 |
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my @arr; |
107 |
|
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foreach my $key_numeric (sort keys %{$vref->{$_}}) { |
108 |
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push @arr, $vref->{$_}{$key_numeric}; |
109 |
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} |
110 |
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$vref->{$_} = \@arr; |
111 |
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} |
112 |
joko |
1.10 |
numhash2list($vref->{$_}); |
113 |
joko |
1.1 |
} |
114 |
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# } else { |
115 |
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# #$vref->{$_} = scalar2iso($vref->{$_}); |
116 |
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# } |
117 |
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} |
118 |
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} |
119 |
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} |
120 |
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121 |
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122 |
joko |
1.9 |
# FIXME: could this be refactored using expand? |
123 |
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# btw: "expand": look at scripts@CPAN (System Administration): |
124 |
|
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# there is a perl make with perl |
125 |
joko |
1.10 |
sub _var_deref_test { |
126 |
joko |
1.1 |
my $obj = shift; |
127 |
joko |
1.4 |
my $options = shift; |
128 |
joko |
1.1 |
my $result; |
129 |
|
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if ((ref $obj) eq 'ARRAY') { |
130 |
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foreach (@{$obj}) { |
131 |
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my $ref = ref $_; |
132 |
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if ($ref) { |
133 |
joko |
1.4 |
push(@{$result}, var_deref($_, $options)); |
134 |
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#undef $_; |
135 |
joko |
1.1 |
} else { |
136 |
joko |
1.4 |
#push(@{$result}, $_); |
137 |
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push(@{$result}, deep_copy($_)); |
138 |
joko |
1.1 |
} |
139 |
joko |
1.4 |
#undef $_ if $options->{destroy}; |
140 |
|
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#$options->{destroy}->($_) if $options->{destroy}; |
141 |
joko |
1.1 |
} |
142 |
joko |
1.2 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
143 |
joko |
1.1 |
} else { |
144 |
|
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foreach (keys %{$obj}) { |
145 |
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my $key = $_; |
146 |
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my $ref = ref $obj->{$_}; |
147 |
|
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if ($ref) { |
148 |
joko |
1.4 |
$result->{$_} = var_deref($obj->{$_}, $options); |
149 |
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#undef $obj->{$_}; |
150 |
joko |
1.1 |
} else { |
151 |
joko |
1.4 |
#$result->{$_} = $obj->{$_}; |
152 |
|
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$result->{$_} = deep_copy($obj->{$_}); |
153 |
joko |
1.1 |
} |
154 |
joko |
1.4 |
#undef $obj->{$_} if $options->{destroy}; |
155 |
|
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#$options->{destroy}->($obj->{$_}) if $options->{destroy}; |
156 |
joko |
1.1 |
} |
157 |
|
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} |
158 |
joko |
1.4 |
#undef $obj if $options->{destroy}; |
159 |
|
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$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
160 |
joko |
1.1 |
return $result; |
161 |
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} |
162 |
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163 |
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164 |
joko |
1.13 |
# convert values in hash to utf8 (and back) to be ready for (e.g.) encapsulation in XML |
165 |
|
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# but still using the known latin locale stuff |
166 |
joko |
1.4 |
sub expand { |
167 |
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|
168 |
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my $obj = shift; |
169 |
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my $options = shift; |
170 |
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my $result; |
171 |
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172 |
joko |
1.10 |
#print "ref: ", ref $obj, "\n"; |
173 |
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174 |
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if (ref $obj eq 'ARRAY') { |
175 |
joko |
1.4 |
|
176 |
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IterArray @$obj, sub { |
177 |
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my $item; |
178 |
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# if current item is a reference ... |
179 |
|
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if (ref $_[0]) { |
180 |
jonen |
1.14 |
$item = $_[0]; |
181 |
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# if $options->{childObj2string} is TRUE or STRING don't expand referenced object, |
182 |
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# instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> ) |
183 |
|
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if ($item && $options->{childObj2string}) { |
184 |
joko |
1.21 |
$item = twingle_reference($item); |
185 |
jonen |
1.14 |
} else { |
186 |
|
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# ... expand structure recursively |
187 |
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$item = expand($_[0], $options); |
188 |
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} |
189 |
joko |
1.4 |
# destroy item via seperate callback method (a POST) if requested |
190 |
|
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#$options->{cb}->{destroy}->($_[0]) if $options->{destroy}; |
191 |
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|
192 |
|
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# ... assume plain scalar |
193 |
|
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} else { |
194 |
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#$item = deep_copy($_[0]); |
195 |
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$item = $_[0]; |
196 |
|
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# conversions/encodings |
197 |
joko |
1.10 |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
198 |
|
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$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
199 |
joko |
1.4 |
} |
200 |
|
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#push(@{$result}, $item) if $item; # use item only if not undef (TODO: make configurable via $options) |
201 |
|
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push(@{$result}, $item); # use item in any case |
202 |
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|
203 |
|
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} |
204 |
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|
205 |
joko |
1.10 |
} elsif (ref $obj eq 'CODE') { |
206 |
|
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#print Dumper($obj); |
207 |
|
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#exit; |
208 |
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|
209 |
joko |
1.4 |
# TODO: "} elsif (ref $obj eq 'HASH') { [...] } else { croak 'could not deref blah'; }" ??? |
210 |
joko |
1.10 |
} elsif (ref $obj) { |
211 |
joko |
1.4 |
|
212 |
|
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IterHash %$obj, sub { |
213 |
|
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my $item; |
214 |
|
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|
215 |
|
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# if current item is a reference ... |
216 |
|
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if (ref $_[1]) { |
217 |
jonen |
1.14 |
$item = $_[1]; |
218 |
|
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# if $options->{childObj2string} is TRUE or STRING don't expand referenced object, |
219 |
|
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# instead replace it by per option choosed string (default: o_<classname>_<ref type>_<guid> ) |
220 |
|
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if ($item && $options->{childObj2string} && !(ref $_[1] eq "ARRAY") && !(ref $_[1] eq "HASH")) { |
221 |
joko |
1.21 |
$item = twingle_reference($item); |
222 |
jonen |
1.14 |
} else { |
223 |
|
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# ... expand structure recursively |
224 |
|
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$item = expand($_[1], $options); |
225 |
|
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} |
226 |
joko |
1.4 |
# destroy item via seperate callback method (a POST) if requested |
227 |
|
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#$options->{cb}->{destroy}->($_[1]) if $options->{destroy}; |
228 |
|
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|
229 |
|
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# ... assume plain scalar |
230 |
|
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} else { |
231 |
|
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#$item = deep_copy($_[1]); |
232 |
|
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$item = $_[1]; |
233 |
|
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# conversions/encodings |
234 |
joko |
1.10 |
$item = latin_to_utf8_scalar($item) if ($item && $options->{utf8}); |
235 |
|
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$item = utf8_to_latin_scalar($item) if ($item && $options->{to_latin}); |
236 |
joko |
1.4 |
} |
237 |
|
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#$result->{$_[0]} = $item if $item; # use item only if not undef (TODO: make configurable via $options) |
238 |
|
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$result->{$_[0]} = $item; # use item in any case |
239 |
|
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} |
240 |
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|
241 |
joko |
1.10 |
} else { |
242 |
|
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#die ("not a reference!"); |
243 |
|
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$result = $obj; |
244 |
|
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|
245 |
joko |
1.4 |
} |
246 |
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|
247 |
|
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# convert all values to utf8 (inside complex struct) |
248 |
|
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# now done in core-item-callbacks via Greg London's "Iterate" from CPAN |
249 |
joko |
1.13 |
# latin_to_utf8($result) if ($options->{utf8}); |
250 |
joko |
1.4 |
|
251 |
|
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# destroy persistent object from memory to be sure to get a fresh one next time |
252 |
|
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#undef $obj if $options->{destroy}; |
253 |
|
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#$options->{cb_destroy}->($obj) if $options->{cb_destroy}; |
254 |
|
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#$options->{cb}->{destroy}->($obj) if $options->{destroy}; |
255 |
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|
256 |
|
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return $result; |
257 |
|
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} |
258 |
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259 |
joko |
1.1 |
|
260 |
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|
261 |
|
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my @indexstack; |
262 |
joko |
1.10 |
sub _var_traverse_mixin_update_old { |
263 |
joko |
1.1 |
my $obj = shift; |
264 |
|
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my $data = shift; |
265 |
|
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my $bool_recursion = shift; |
266 |
|
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if (!$bool_recursion) { |
267 |
|
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@indexstack = (); |
268 |
|
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} |
269 |
|
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my $result; |
270 |
|
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|
271 |
|
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# 'ARRAY' does not work! |
272 |
|
|
if ((ref $obj) eq 'ARRAY') { |
273 |
|
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#print "ARRAY\n"; |
274 |
|
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my $i = 0; |
275 |
|
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foreach (@{$obj}) { |
276 |
|
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push @indexstack, $i; |
277 |
|
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my $ref = ref $_; |
278 |
|
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if ($ref) { |
279 |
|
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#$obj->[$i] = var_mixin($_, $data, 1); |
280 |
|
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var_traverse_mixin_update($_, $data, 1); |
281 |
|
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} else { |
282 |
|
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$obj->[$i] = $_; |
283 |
|
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} |
284 |
|
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pop @indexstack; |
285 |
|
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$i++; |
286 |
|
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} |
287 |
|
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} else { |
288 |
|
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foreach (keys %{$obj}) { |
289 |
|
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push @indexstack, $_; |
290 |
|
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my $ref = ref $obj->{$_}; |
291 |
|
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if ($ref) { |
292 |
|
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#$obj->{$_} = var_mixin($obj->{$_}, $data, 1); |
293 |
|
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var_traverse_mixin_update($obj->{$_}, $data, 1); |
294 |
|
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} else { |
295 |
|
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#$obj->{$_} = $obj->{$_}; |
296 |
|
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my $evstring = getSlot($data); |
297 |
|
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$obj->{$_} = $evstring; |
298 |
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|
299 |
|
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} |
300 |
|
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pop @indexstack; |
301 |
|
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} |
302 |
|
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} |
303 |
|
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#return $result; |
304 |
|
|
} |
305 |
|
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|
306 |
joko |
1.10 |
sub merge_to { |
307 |
|
|
_hash2object(@_); |
308 |
|
|
# TODO: |
309 |
joko |
1.16 |
# re-implement using CPAN's "Iterate" and/or a modified Hash::Merge. |
310 |
joko |
1.2 |
} |
311 |
|
|
|
312 |
joko |
1.10 |
|
313 |
joko |
1.2 |
# todo: maybe do diff(s) here sometimes!? |
314 |
joko |
1.10 |
sub _hash2object { |
315 |
joko |
1.2 |
my $object = shift; |
316 |
|
|
my $data = shift; |
317 |
|
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my $options = shift; |
318 |
|
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|
319 |
joko |
1.3 |
#print "hash2object", "\n"; |
320 |
|
|
|
321 |
joko |
1.2 |
# "patch" needed 'cause php passes numerical-indexed-arrays as hash-tables, |
322 |
|
|
# this method corrects this |
323 |
joko |
1.10 |
numhash2list($data) if ($options->{php}); |
324 |
joko |
1.2 |
|
325 |
|
|
# utf8-conversion/-encoding (essential for I18N) |
326 |
jonen |
1.15 |
utf8_to_latin($data) if ($options->{utf8}); |
327 |
joko |
1.2 |
|
328 |
|
|
# get fresh object from database |
329 |
|
|
# todo: |
330 |
|
|
# - handle "locked" objects !!! |
331 |
|
|
# - check if already another update occoured (object-revisioning needed!) |
332 |
|
|
#my $obj = $self->getObject($oid); |
333 |
|
|
|
334 |
|
|
# mix changes into fresh object and save it back |
335 |
joko |
1.10 |
_hash2object_traverse_mixin($object, $data, 0, $options); |
336 |
joko |
1.2 |
|
337 |
|
|
# done in core mixin function? |
338 |
|
|
#$self->{storage}->update($obj); |
339 |
|
|
|
340 |
|
|
# we should "undef" some objects here to destroy them in memory and enforce reloading when used next time |
341 |
|
|
# simulate: |
342 |
|
|
#$self->{storage}->disconnect(); |
343 |
|
|
|
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
# ------------------------------------ |
347 |
|
|
# core mixin function |
348 |
|
|
# TODO-FEATURE: make this possible in a reverse way: object is empty (no fields) and gets filled up by mixin-data |
349 |
|
|
|
350 |
|
|
# remember keys of structures we are traversing |
351 |
|
|
# this is a HACK: |
352 |
|
|
# - don't (!!!) "packageglobal" @indexstack |
353 |
|
|
# - it will lead to problems with parallelism! |
354 |
|
|
|
355 |
|
|
#my @indexstack; |
356 |
|
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|
357 |
|
|
# traverse a deeply nested structure, mix in values from given hash, update underlying tangram-object |
358 |
joko |
1.10 |
sub _hash2object_traverse_mixin { |
359 |
joko |
1.2 |
my $object = shift; |
360 |
|
|
my $data = shift; |
361 |
|
|
my $bool_recursion = shift; |
362 |
joko |
1.5 |
my $options = shift; |
363 |
joko |
1.2 |
|
364 |
|
|
# clear our key - stack if we are called from user-code (non-recursively) |
365 |
|
|
@indexstack = () if (!$bool_recursion); |
366 |
|
|
|
367 |
|
|
my $classname = ref $object; |
368 |
|
|
# if ($classname) { |
369 |
|
|
# print STDERR "*****************", Dumper(Class::Tangram::attribute_types($classname)), "\n"; |
370 |
|
|
# } |
371 |
|
|
|
372 |
|
|
# parser: detected OBJECT (a Tangram one?) (reftype == HASH) (assume) |
373 |
|
|
# what's exactly done here? hmmm.... it works ;) |
374 |
|
|
# maybe a HACK: please try not to use "IntrHash"es, maybe this cannot handle them!!! |
375 |
|
|
# extend! check! |
376 |
joko |
1.10 |
|
377 |
|
|
#print attributes::reftype($object), "\n"; |
378 |
|
|
|
379 |
|
|
# V1 |
380 |
|
|
#if ((attributes::reftype($object) eq 'HASH') && (ref($object) ne 'HASH') && (ref($object) ne 'ARRAY')) { |
381 |
|
|
# V2 |
382 |
|
|
my $reftype = attributes::reftype($object); |
383 |
|
|
#print "reftype: '$reftype'", "\n"; |
384 |
|
|
if ($reftype eq 'HASH') { |
385 |
joko |
1.2 |
|
386 |
|
|
# print STDERR "===", "reftype: ", attributes::reftype($obj), "\n"; |
387 |
|
|
|
388 |
joko |
1.5 |
my @fields; |
389 |
joko |
1.2 |
# loop through fields of object (Tangram-object) |
390 |
joko |
1.5 |
@fields = keys %{$object}; |
391 |
|
|
|
392 |
|
|
# loop through fields of to.be.injected-data (arbitrary Perl-data-structure) |
393 |
|
|
@fields = keys %{$data} if $options->{init}; |
394 |
jonen |
1.6 |
# @fields = keys %{$data} if $options->{mixin}; |
395 |
joko |
1.5 |
|
396 |
|
|
foreach (@fields) { |
397 |
joko |
1.7 |
my $field = $_; |
398 |
|
|
push @indexstack, $field; |
399 |
joko |
1.2 |
|
400 |
|
|
# determine type of object |
401 |
joko |
1.7 |
my $ref = ref $object->{$field}; |
402 |
joko |
1.2 |
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
403 |
|
|
if ($ref) { |
404 |
joko |
1.10 |
_hash2object_traverse_mixin($object->{$field}, $data, 1, $options); |
405 |
joko |
1.2 |
} else { |
406 |
joko |
1.10 |
my $val = ref_slot($data, \@indexstack); |
407 |
joko |
1.7 |
|
408 |
joko |
1.8 |
#print Dumper($options); |
409 |
joko |
1.7 |
my $field_target = $field; |
410 |
|
|
if (my $pattern = $options->{pattern_strip_key}) { |
411 |
|
|
print "pattern: $pattern", "\n"; |
412 |
|
|
$field_target =~ s/$pattern//; |
413 |
|
|
print "field: $field_target", "\n"; |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
$object->{$field_target} = $val if defined $val; |
417 |
joko |
1.2 |
} |
418 |
|
|
pop @indexstack; |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
# save object to database ... |
422 |
|
|
# ... do an update if it already exists, do an insert if it doesn't |
423 |
|
|
# my $objectId = $self->{storage}->id($obj); |
424 |
|
|
# $logger->debug( __PACKAGE__ . "->saveObjectFromHash_traverse_mixin_update( object $obj objectId $objectId )" ); |
425 |
|
|
# if ($objectId) { |
426 |
|
|
# $self->{storage}->update($obj); |
427 |
|
|
|
428 |
|
|
#print __PACKAGE__ . ":", "\n"; |
429 |
|
|
#print Dumper($object); |
430 |
|
|
|
431 |
|
|
# } else { |
432 |
|
|
# $self->{storage}->insert($obj); |
433 |
|
|
# } |
434 |
|
|
|
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
#&& ( ref($obj) ne 'HASH' ) |
438 |
|
|
|
439 |
|
|
# loop through entries of array (IntrArray, isn't it?) |
440 |
|
|
if ((ref $object) eq 'ARRAY') { |
441 |
|
|
# print STDERR "===", "refttype ", attributes::reftype($obj), "\n"; |
442 |
|
|
my $i = 0; |
443 |
|
|
foreach (@{$object}) { |
444 |
|
|
push @indexstack, $i; |
445 |
|
|
my $ref = ref $_; |
446 |
|
|
# print STDERR "attrname: $_ ATTRref: $ref", "\n"; |
447 |
jonen |
1.6 |
# if ($ref && $_) { |
448 |
|
|
if ($ref) { |
449 |
joko |
1.10 |
_hash2object_traverse_mixin($_, $data, 1, $options); |
450 |
joko |
1.2 |
} else { |
451 |
jonen |
1.6 |
$object->[$i] = $_ if defined $_; |
452 |
joko |
1.2 |
} |
453 |
|
|
pop @indexstack; |
454 |
|
|
$i++; |
455 |
|
|
} |
456 |
joko |
1.10 |
|
457 |
|
|
=pod |
458 |
|
|
# object? |
459 |
|
|
} else { |
460 |
|
|
print "reference: ", ref $object, "\n"; |
461 |
|
|
print "reftype: ", $reftype, "\n"; |
462 |
|
|
die(__PACKAGE__ . "->_hash2object_traverse_mixin: can not handle this!"); |
463 |
|
|
=cut |
464 |
|
|
|
465 |
joko |
1.2 |
} |
466 |
|
|
|
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
|
470 |
joko |
1.10 |
# ACK's go to Randal L. Schwartz <merlyn@stonehenge.com> |
471 |
|
|
# on the website: |
472 |
|
|
# This text is copyright by Miller-Freeman, Inc., and is used with their permission. |
473 |
|
|
# Further distribution or use is not permitted. |
474 |
|
|
# please visit http://www.stonehenge.com/merlyn/UnixReview/col30.html |
475 |
|
|
sub deep_copy1 { |
476 |
|
|
my $this = shift; |
477 |
|
|
if (not ref $this) { |
478 |
|
|
$this; |
479 |
|
|
} elsif (ref $this eq "ARRAY") { |
480 |
|
|
[map deep_copy1($_), @$this]; |
481 |
|
|
} elsif (ref $this eq "HASH") { |
482 |
|
|
+{map { $_ => deep_copy1($this->{$_}) } keys %$this}; |
483 |
|
|
} elsif (ref $this eq "CODE") { |
484 |
|
|
$this; |
485 |
|
|
} else { die "deep_copy1 asks: what type is $this?" } |
486 |
|
|
#} else { print "deep_copy asks: what type is $this?", "\n"; } |
487 |
joko |
1.2 |
} |
488 |
|
|
|
489 |
joko |
1.10 |
# ACK's go to Andrew Pitonyak |
490 |
|
|
# Copyright 2002, Andrew Pitonyak (perlboy@pitonyak.org) |
491 |
|
|
# please visit: http://www.pitonyak.org/code/perl/Pitonyak/DeepCopy.pm.html |
492 |
joko |
1.7 |
sub deep_copy { |
493 |
joko |
1.12 |
Pitonyak::DeepCopy::deep_copy(@_); |
494 |
joko |
1.1 |
} |
495 |
joko |
1.12 |
|
496 |
joko |
1.1 |
|
497 |
|
|
1; |
498 |
joko |
1.10 |
__END__ |