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use Text::Iconv; |
use Text::Iconv; |
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use Config::IniFiles; |
use Config::IniFiles; |
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use Data::Dumper; |
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=head1 NAME |
=head1 NAME |
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WebPAC - base class for WebPAC |
WebPAC - base class for WebPAC |
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my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
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$maxmfn = $self->{limit_mfn} if ($self->{limit_mfn}); |
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# read database |
# read database |
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for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
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} |
} |
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} |
} |
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=head2 get_data |
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Returns value from record. |
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$self->get_data(\$rec,$f,$sf,$i,\$found); |
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Arguments are: |
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record reference C<$rec>, |
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field C<$f>, |
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optional subfiled C<$sf>, |
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index for repeatable values C<$i>. |
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Optinal variable C<$found> will be incremeted if thre |
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is field. |
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Returns value or empty string. |
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=cut |
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sub get_data { |
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my $self = shift; |
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my ($rec,$f,$sf,$i,$found) = @_; |
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if ($$rec->{$f}) { |
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if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
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$$found++ if (defined($$found)); |
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return $$rec->{$f}->[$i]->{$sf}; |
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} elsif ($$rec->{$f}->[$i]) { |
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$$found++ if (defined($$found)); |
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return $$rec->{$f}->[$i]; |
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} |
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} else { |
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return ''; |
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} |
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} |
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=head2 fill_in |
=head2 fill_in |
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Workhourse of all: takes record from in-memory structure of database and |
Workhourse of all: takes record from in-memory structure of database and |
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my $found = 0; |
my $found = 0; |
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# get field with subfield |
my $eval_code; |
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sub get_sf { |
# remove eval{...} from beginning |
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my ($found,$rec,$f,$sf,$i) = @_; |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
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if ($$rec->{$f} && $$rec->{$f}->[$i]->{$sf}) { |
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$$found++; |
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return $$rec->{$f}->[$i]->{$sf}; |
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} else { |
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return ''; |
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} |
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} |
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# get field (without subfield) |
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sub get_nosf { |
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my ($found,$rec,$f,$i) = @_; |
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if ($$rec->{$f} && $$rec->{$f}->[$i]) { |
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$$found++; |
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return $$rec->{$f}->[$i]; |
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} else { |
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return ''; |
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} |
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} |
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# do actual replacement of placeholders |
# do actual replacement of placeholders |
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$format =~ s/v(\d+)\^(\w)/get_sf(\$found,\$rec,$1,$2,$i)/ges; |
$format =~ s/v(\d+)(?:\^(\w))*/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
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$format =~ s/v(\d+)/get_nosf(\$found,\$rec,$1,$i)/ges; |
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if ($found) { |
if ($found) { |
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if ($eval_code) { |
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my $eval = $self->fill_in($rec,$eval_code,$i); |
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return if (! eval $eval); |
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} |
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# do we have lookups? |
# do we have lookups? |
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if ($format =~ /\[[^\[\]]+\]/o) { |
if ($format =~ /\[[^\[\]]+\]/o) { |
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return $self->lookup($format); |
return $self->lookup($format); |
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} |
} |
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} |
} |
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=head2 parse |
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Perform smart parsing of string, skipping delimiters for fields which aren't |
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defined. It can also eval code in format starting with C<eval{...}> and |
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return output or nothing depending on eval code. |
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$webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
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=cut |
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sub parse { |
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my $self = shift; |
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my ($rec, $format, $i) = @_; |
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confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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$i = 0 if (! $i); |
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my @out; |
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my $eval_code; |
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# remove eval{...} from beginning |
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$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
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my $prefix; |
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my $all_found=0; |
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#print "## $format\n"; |
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while ($format =~ s/^(.*?)v(\d+)(?:\^(\w))*//s) { |
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#print "## [ $1 | $2 | $3 ] $format\n"; |
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my $del = $1 || ''; |
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$prefix ||= $del if ($all_found == 0); |
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my $found = 0; |
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my $tmp = $self->get_data(\$rec,$2,$3,$i,\$found); |
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if ($found) { |
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push @out, $del; |
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push @out, $tmp; |
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$all_found += $found; |
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} |
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} |
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return if (! $all_found); |
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my $out = join('',@out) . $format; |
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# add prefix if not there |
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$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
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if ($eval_code) { |
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my $eval = $self->fill_in($rec,$eval_code,$i); |
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return if (! eval $eval); |
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} |
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return $out; |
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} |
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1; |
1; |
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