17 |
|
|
18 |
our $VERSION = '0.01'; |
our $VERSION = '0.01'; |
19 |
|
|
20 |
|
#my $LOOKUP_REGEX = '\[[^\[\]]+\]'; |
21 |
|
#my $LOOKUP_REGEX_SAVE = '\[([^\[\]]+)\]'; |
22 |
|
my $LOOKUP_REGEX = 'lookup{[^\{\}]+}'; |
23 |
|
my $LOOKUP_REGEX_SAVE = 'lookup{([^\{\}]+)}'; |
24 |
|
|
25 |
|
=head1 SYNOPSYS |
26 |
|
|
27 |
|
This module defines common functions, and is used as base for other, more |
28 |
|
specific modules. |
29 |
|
|
30 |
|
my $webpac = new WebPAC::Common( |
31 |
|
filter => { |
32 |
|
'filter_name_1' => sub { |
33 |
|
# filter code |
34 |
|
return length($_); |
35 |
|
}, ... |
36 |
|
}, |
37 |
|
} |
38 |
|
|
39 |
|
=head1 FUNCTIONS |
40 |
|
|
41 |
|
=head2 fill_in |
42 |
|
|
43 |
|
Workhourse of all: takes record from in-memory structure of database and |
44 |
|
strings with placeholders and returns string or array of with substituted |
45 |
|
values from record. |
46 |
|
|
47 |
|
my $text = $webpac->fill_in($rec,'v250^a'); |
48 |
|
|
49 |
|
Optional argument is ordinal number for repeatable fields. By default, |
50 |
|
it's assume to be first repeatable field (fields are perl array, so first |
51 |
|
element is 0). |
52 |
|
Following example will read second value from repeatable field. |
53 |
|
|
54 |
|
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
55 |
|
|
56 |
|
This function B<does not> perform parsing of format to inteligenty skip |
57 |
|
delimiters before fields which aren't used. |
58 |
|
|
59 |
|
This method will automatically decode UTF-8 string to local code page |
60 |
|
if needed. |
61 |
|
|
62 |
|
=cut |
63 |
|
|
64 |
|
sub fill_in { |
65 |
|
my $self = shift; |
66 |
|
|
67 |
|
my $log = $self->_get_logger(); |
68 |
|
|
69 |
|
my $rec = shift || $log->logconfess("need data record"); |
70 |
|
my $format = shift || $log->logconfess("need format to parse"); |
71 |
|
# iteration (for repeatable fields) |
72 |
|
my $i = shift || 0; |
73 |
|
|
74 |
|
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
75 |
|
|
76 |
|
# FIXME remove for speedup? |
77 |
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
78 |
|
|
79 |
|
if (utf8::is_utf8($format)) { |
80 |
|
$format = $self->_x($format); |
81 |
|
} |
82 |
|
|
83 |
|
my $found = 0; |
84 |
|
|
85 |
|
my $eval_code; |
86 |
|
# remove eval{...} from beginning |
87 |
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
88 |
|
|
89 |
|
my $filter_name; |
90 |
|
# remove filter{...} from beginning |
91 |
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
92 |
|
|
93 |
|
# do actual replacement of placeholders |
94 |
|
# repeatable fields |
95 |
|
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
96 |
|
# non-repeatable fields |
97 |
|
$format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges; |
98 |
|
|
99 |
|
if ($found) { |
100 |
|
$log->debug("format: $format"); |
101 |
|
if ($eval_code) { |
102 |
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
103 |
|
return if (! $self->_eval($eval)); |
104 |
|
} |
105 |
|
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
106 |
|
$log->debug("filter '$filter_name' for $format"); |
107 |
|
$format = $self->{'filter'}->{$filter_name}->($format); |
108 |
|
return unless(defined($format)); |
109 |
|
$log->debug("filter result: $format"); |
110 |
|
} |
111 |
|
# do we have lookups? |
112 |
|
if ($format =~ /$LOOKUP_REGEX/o) { |
113 |
|
$log->debug("format '$format' has lookup"); |
114 |
|
return $self->lookup($format); |
115 |
|
} else { |
116 |
|
return $format; |
117 |
|
} |
118 |
|
} else { |
119 |
|
return; |
120 |
|
} |
121 |
|
} |
122 |
|
|
123 |
|
|
124 |
|
=head2 get_data |
125 |
|
|
126 |
|
Returns value from record. |
127 |
|
|
128 |
|
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
129 |
|
|
130 |
|
Arguments are: |
131 |
|
record reference C<$rec>, |
132 |
|
field C<$f>, |
133 |
|
optional subfiled C<$sf>, |
134 |
|
index for repeatable values C<$i>. |
135 |
|
|
136 |
|
Optinal variable C<$found> will be incremeted if there |
137 |
|
is field. |
138 |
|
|
139 |
|
Returns value or empty string. |
140 |
|
|
141 |
|
=cut |
142 |
|
|
143 |
|
sub get_data { |
144 |
|
my $self = shift; |
145 |
|
|
146 |
|
my ($rec,$f,$sf,$i,$found) = @_; |
147 |
|
|
148 |
|
if ($$rec->{$f}) { |
149 |
|
return '' if (! $$rec->{$f}->[$i]); |
150 |
|
no strict 'refs'; |
151 |
|
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
152 |
|
$$found++ if (defined($$found)); |
153 |
|
return $$rec->{$f}->[$i]->{$sf}; |
154 |
|
} elsif ($$rec->{$f}->[$i]) { |
155 |
|
$$found++ if (defined($$found)); |
156 |
|
# it still might have subfield, just |
157 |
|
# not specified, so we'll dump all |
158 |
|
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
159 |
|
my $out; |
160 |
|
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
161 |
|
$out .= $$rec->{$f}->[$i]->{$k}." "; |
162 |
|
} |
163 |
|
return $out; |
164 |
|
} else { |
165 |
|
return $$rec->{$f}->[$i]; |
166 |
|
} |
167 |
|
} |
168 |
|
} else { |
169 |
|
return ''; |
170 |
|
} |
171 |
|
} |
172 |
|
|
173 |
|
|
174 |
=head1 INTERNAL METHODS |
=head1 INTERNAL METHODS |
175 |
|
|
176 |
Here is a quick list of internal methods, mostly useful to turn debugging |
Here is a quick list of internal methods, mostly useful to turn debugging |
247 |
|
|
248 |
$webpac->_init_logger('/path/to/log.conf'); |
$webpac->_init_logger('/path/to/log.conf'); |
249 |
|
|
250 |
|
If no path to configuration file is given, dummy empty configuration |
251 |
|
will be create. |
252 |
|
|
253 |
=cut |
=cut |
254 |
|
|
255 |
sub _init_logger { |
sub _init_logger { |