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Koha/C4/Labels/Label.pm
Jonathan Druart 65c4d8019e Bug 15836: Add the ability to defined custom methods to split call number in labels 
Currently the call number splitting seems to be mostly implemented for
DDC and LC classifications.
Those are both not very common in some countries.
A lot of libraries use their own custom classification schemes so the call number
plitting is something that should be individually configurable.

This enhancement adds the ability to define custom splitting rules based
on regular expressions.

How does it work so far?
From C4/Labels/Label.pm there are 3 differents splitting methods defined, depending on items.cn_source.
  if cn_source is "lcc' or 'nlm' we split using Library::CallNumber::LC
  if cn_source is 'ddc' we split using a in-house method
Finally there is a fallback method to split on space
And nothing else is done for other cn_source

The idea of this patch is to mimick what was done for the "filing rules" and add
the ability to define "splitting rules" that will be used by the "Classification sources".
A classification source will then have:
  * a filing rule used to sort items by callnumbers
  * a splitting rule used to print labels

To acchieve this goal this enhancement will do the following
modifications at DB level:
* New table class_split_rules
* New column class_sources.class_split_rule

Test plan:
* Execute the update database entry to create the new table and
column.
I. UI Changes
a) Create/modify/delete a filing rule
b) Create/modify/delete a splitting rule
c) Create/modify/delete a classification source
=> A filing rule or splitting rule cannot be removed if used by a
classification source

II. Splitting rule using regular expressions
a) Create a splitting rule using the "Splitting routine" "RegEx"
b) Define several regular expressions, they will be applied one after
the other in the same order you define them.
Something like:
  s/\s/\n/g         # Break on spaces
  s/(\s?=)/\n=/g    # Break on = (unless it's done already)
  s/^(J|K)\n/$1 /   # Remove the first break if callnumber starts with J or K
c) You can test the regular expressions using filling the textarea with
a list of callnumbers. Then click "Test" and confirm the callnumbers are
split how you expected.
d) Finally create a new classification source that will use this new
splitting rule.

III. Print the label!
a) Create a layout. It should have the "Split call numbers" checkbox
ticked, and display itemcallnumber
b) Use this layout to export labels, use items with different
classification source ('lcc', 'ddc', but also the new one you have
create)
=> The callnumbers should have been split according to the regex you
defined earlier!

Notes:
* The update database entry fill the class_sources.class_split_rule
with the value of class_sources.class_sort_rule
If default rules exist it will not work, we should add a note in the
release notes (would be enough?)
* C4::ClassSplitRoutine::* should be moved to Koha::ClassSplitRule,
but it sounded better to keep the same pattern as ClassSortRoutines
* Should not we use a LONGTEXT for class_split_rules.split_regex instead
of VARCHAR(255)?

* class_sources.sql should be filled for other languages before pushed
to master!

IMPORTANT NOTES: The regular expressions are stored as it, and eval is
used to evaluate it (perlcritic raises a warning about it (Expression
form of "eval"). It can lead to serious security issues (execution of
arbitrary code on the server), especially if the modifier 'e' is used.
We could then remedy the situation with one of these following points:
- Assume that this DB data is safe (We can add a new permission?)
- Assume that the data is not safe and deal with possible attack
Cons: how be sure we are exhaustive? Making sure it matches ^s///[^e/]*$
would be enough?
- Use Template Toolkit syntax instead (Really safer?)
  [% callnumber.replace('\s', '\n').replace ... %]
- Cut the regex parts: find, replace, modifiers
like we already do for Marc modification template. Cons: we are going to
have escape problems, the "find" and "replace" parts should not be
handle the same way (think "\n", "\\n", "\1", "\s", etc.)
I did not manage to implement this one easily.

Sponsored-by: Goethe-Institut

Signed-off-by: Christian Stelzenmüller <christian.stelzenmueller@bsz-bw.de>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
2018-11-13 15:18:22 +00:00

800 lines
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package C4::Labels::Label;
use strict;
use warnings;
use Text::Wrap;
use Algorithm::CheckDigits;
use Text::CSV_XS;
use Data::Dumper;
use Text::Bidi qw( log2vis );
use C4::Context;
use C4::Debug;
use C4::Biblio;
use Koha::ClassSources;
use Koha::ClassSortRules;
use Koha::ClassSplitRules;
use C4::ClassSplitRoutine::Dewey;
use C4::ClassSplitRoutine::LCC;
use C4::ClassSplitRoutine::Generic;
use C4::ClassSplitRoutine::RegEx;
sub _check_params {
my $given_params = {};
my $exit_code = 0;
my @valid_label_params = (
'batch_id',
'item_number',
'llx',
'lly',
'height',
'width',
'top_text_margin',
'left_text_margin',
'barcode_type',
'printing_type',
'guidebox',
'oblique_title',
'font',
'font_size',
'callnum_split',
'justify',
'format_string',
'text_wrap_cols',
'barcode',
);
if (scalar(@_) >1) {
$given_params = {@_};
foreach my $key (keys %{$given_params}) {
if (!(grep m/$key/, @valid_label_params)) {
warn sprintf('Unrecognized parameter type of "%s".', $key);
$exit_code = 1;
}
}
}
else {
if (!(grep m/$_/, @valid_label_params)) {
warn sprintf('Unrecognized parameter type of "%s".', $_);
$exit_code = 1;
}
}
return $exit_code;
}
sub _guide_box {
my ( $llx, $lly, $width, $height ) = @_;
return unless ( defined $llx and defined $lly and
defined $width and defined $height );
my $obj_stream = "q\n"; # save the graphic state
$obj_stream .= "0.5 w\n"; # border line width
$obj_stream .= "1.0 0.0 0.0 RG\n"; # border color red
$obj_stream .= "1.0 1.0 1.0 rg\n"; # fill color white
$obj_stream .= "$llx $lly $width $height re\n"; # a rectangle
$obj_stream .= "B\n"; # fill (and a little more)
$obj_stream .= "Q\n"; # restore the graphic state
return $obj_stream;
}
sub _get_label_item {
my $item_number = shift;
my $barcode_only = shift || 0;
my $dbh = C4::Context->dbh;
# FIXME This makes for a very bulky data structure; data from tables w/duplicate col names also gets overwritten.
# Something like this, perhaps, but this also causes problems because we need more fields sometimes.
# SELECT i.barcode, i.itemcallnumber, i.itype, bi.isbn, bi.issn, b.title, b.author
my $sth = $dbh->prepare("SELECT bi.*, i.*, b.*,br.* FROM items AS i, biblioitems AS bi ,biblio AS b, branches AS br WHERE itemnumber=? AND i.biblioitemnumber=bi.biblioitemnumber AND bi.biblionumber=b.biblionumber AND i.homebranch=br.branchcode;");
$sth->execute($item_number);
if ($sth->err) {
warn sprintf('Database returned the following error: %s', $sth->errstr);
}
my $data = $sth->fetchrow_hashref;
# Replaced item's itemtype with the more user-friendly description...
my $sth1 = $dbh->prepare("SELECT itemtype,description FROM itemtypes WHERE itemtype = ?");
$sth1->execute($data->{'itemtype'});
if ($sth1->err) {
warn sprintf('Database returned the following error: %s', $sth1->errstr);
}
my $data1 = $sth1->fetchrow_hashref;
$data->{'itemtype'} = $data1->{'description'};
$data->{'itype'} = $data1->{'description'};
# add *_description fields
if ($data->{'homebranch'} || $data->{'holdingbranch'}){
require Koha::Libraries;
# FIXME Is this used??
$data->{'homebranch_description'} = Koha::Libraries->find($data->{'homebranch'})->branchname if $data->{'homebranch'};
$data->{'holdingbranch_description'} = Koha::Libraries->find($data->{'holdingbranch'})->branchname if $data->{'holdingbranch'};
}
$data->{'ccode_description'} = C4::Biblio::GetAuthorisedValueDesc('','', $data->{'ccode'} ,'','','CCODE', 1) if $data->{'ccode'};
$data->{'location_description'} = C4::Biblio::GetAuthorisedValueDesc('','', $data->{'location'} ,'','','LOC', 1) if $data->{'location'};
$data->{'permanent_location_description'} = C4::Biblio::GetAuthorisedValueDesc('','', $data->{'permanent_location'} ,'','','LOC', 1) if $data->{'permanent_location'};
$barcode_only ? return $data->{'barcode'} : return $data;
}
sub _get_text_fields {
my $format_string = shift;
my $csv = Text::CSV_XS->new({allow_whitespace => 1});
my $status = $csv->parse($format_string);
my @sorted_fields = map {{ 'code' => $_, desc => $_ }}
map { $_ && $_ eq 'callnumber' ? 'itemcallnumber' : $_ } # see bug 5653
$csv->fields();
my $error = $csv->error_input();
warn sprintf('Text field sort failed with this error: %s', $error) if $error;
return \@sorted_fields;
}
sub _get_barcode_data {
my ( $f, $item, $record ) = @_;
my $kohatables = _desc_koha_tables();
my $datastring = '';
my $match_kohatable = join(
'|',
(
@{ $kohatables->{'biblio'} },
@{ $kohatables->{'biblioitems'} },
@{ $kohatables->{'items'} },
@{ $kohatables->{'branches'} }
)
);
FIELD_LIST:
while ($f) {
my $err = '';
$f =~ s/^\s?//;
if ( $f =~ /^'(.*)'.*/ ) {
# single quotes indicate a static text string.
$datastring .= $1;
$f = $';
next FIELD_LIST;
}
elsif ( $f =~ /^($match_kohatable).*/ ) {
if ($item->{$f}) {
$datastring .= $item->{$f};
} else {
$debug and warn sprintf("The '%s' field contains no data.", $f);
}
$f = $';
next FIELD_LIST;
}
elsif ( $f =~ /^([0-9a-z]{3})(\w)(\W?).*?/ ) {
my ($field,$subf,$ws) = ($1,$2,$3);
my $subf_data;
my ($itemtag, $itemsubfieldcode) = &GetMarcFromKohaField("items.itemnumber",'');
my @marcfield = $record->field($field);
if(@marcfield) {
if($field eq $itemtag) { # item-level data, we need to get the right item.
ITEM_FIELDS:
foreach my $itemfield (@marcfield) {
if ( $itemfield->subfield($itemsubfieldcode) eq $item->{'itemnumber'} ) {
if ($itemfield->subfield($subf)) {
$datastring .= $itemfield->subfield($subf) . $ws;
}
else {
warn sprintf("The '%s' field contains no data.", $f);
}
last ITEM_FIELDS;
}
}
} else { # bib-level data, we'll take the first matching tag/subfield.
if ($marcfield[0]->subfield($subf)) {
$datastring .= $marcfield[0]->subfield($subf) . $ws;
}
else {
warn sprintf("The '%s' field contains no data.", $f);
}
}
}
$f = $';
next FIELD_LIST;
}
else {
warn sprintf('Failed to parse label format string: %s', $f);
last FIELD_LIST; # Failed to match
}
}
return $datastring;
}
sub _desc_koha_tables {
my $dbh = C4::Context->dbh();
my $kohatables;
for my $table ( 'biblio','biblioitems','items','branches' ) {
my $sth = $dbh->column_info(undef,undef,$table,'%');
while (my $info = $sth->fetchrow_hashref()){
push @{$kohatables->{$table}} , $info->{'COLUMN_NAME'} ;
}
$sth->finish;
}
return $kohatables;
}
### This series of functions calculates the position of text and barcode on individual labels
### Please *do not* add printing types which are non-atomic. Instead, build code which calls the necessary atomic printing types to form the non-atomic types. See the ALT type
### in labels/label-create-pdf.pl as an example.
### NOTE: Each function must be passed seven parameters and return seven even if some are 0 or undef
sub _BIB {
my $self = shift;
my $line_spacer = ($self->{'font_size'} * 1); # number of pixels between text rows (This is actually leading: baseline to baseline minus font size. Recommended starting point is 20% of font size.).
my $text_lly = ($self->{'lly'} + ($self->{'height'} - $self->{'top_text_margin'}));
return $self->{'llx'}, $text_lly, $line_spacer, 0, 0, 0, 0;
}
sub _BAR {
my $self = shift;
my $barcode_llx = $self->{'llx'} + $self->{'left_text_margin'}; # this places the bottom left of the barcode the left text margin distance to right of the left edge of the label ($llx)
my $barcode_lly = $self->{'lly'} + $self->{'top_text_margin'}; # this places the bottom left of the barcode the top text margin distance above the bottom of the label ($lly)
my $barcode_width = 0.8 * $self->{'width'}; # this scales the barcode width to 80% of the label width
my $barcode_y_scale_factor = 0.01 * $self->{'height'}; # this scales the barcode height to 10% of the label height
return 0, 0, 0, $barcode_llx, $barcode_lly, $barcode_width, $barcode_y_scale_factor;
}
sub _BIBBAR {
my $self = shift;
my $barcode_llx = $self->{'llx'} + $self->{'left_text_margin'}; # this places the bottom left of the barcode the left text margin distance to right of the left edge of the label ($self->{'llx'})
my $barcode_lly = $self->{'lly'} + $self->{'top_text_margin'}; # this places the bottom left of the barcode the top text margin distance above the bottom of the label ($lly)
my $barcode_width = 0.8 * $self->{'width'}; # this scales the barcode width to 80% of the label width
my $barcode_y_scale_factor = 0.01 * $self->{'height'}; # this scales the barcode height to 10% of the label height
my $line_spacer = ($self->{'font_size'} * 1); # number of pixels between text rows (This is actually leading: baseline to baseline minus font size. Recommended starting point is 20% of font size.).
my $text_lly = ($self->{'lly'} + ($self->{'height'} - $self->{'top_text_margin'}));
$debug and warn "Label: llx $self->{'llx'}, lly $self->{'lly'}, Text: lly $text_lly, $line_spacer, Barcode: llx $barcode_llx, lly $barcode_lly, $barcode_width, $barcode_y_scale_factor\n";
return $self->{'llx'}, $text_lly, $line_spacer, $barcode_llx, $barcode_lly, $barcode_width, $barcode_y_scale_factor;
}
sub _BARBIB {
my $self = shift;
my $barcode_llx = $self->{'llx'} + $self->{'left_text_margin'}; # this places the bottom left of the barcode the left text margin distance to right of the left edge of the label ($self->{'llx'})
my $barcode_lly = ($self->{'lly'} + $self->{'height'}) - $self->{'top_text_margin'}; # this places the bottom left of the barcode the top text margin distance below the top of the label ($self->{'lly'})
my $barcode_width = 0.8 * $self->{'width'}; # this scales the barcode width to 80% of the label width
my $barcode_y_scale_factor = 0.01 * $self->{'height'}; # this scales the barcode height to 10% of the label height
my $line_spacer = ($self->{'font_size'} * 1); # number of pixels between text rows (This is actually leading: baseline to baseline minus font size. Recommended starting point is 20% of font size.).
my $text_lly = (($self->{'lly'} + $self->{'height'}) - $self->{'top_text_margin'} - (($self->{'lly'} + $self->{'height'}) - $barcode_lly));
return $self->{'llx'}, $text_lly, $line_spacer, $barcode_llx, $barcode_lly, $barcode_width, $barcode_y_scale_factor;
}
sub new {
my ($invocant, %params) = @_;
my $type = ref($invocant) || $invocant;
my $self = {
batch_id => $params{'batch_id'},
item_number => $params{'item_number'},
llx => $params{'llx'},
lly => $params{'lly'},
height => $params{'height'},
width => $params{'width'},
top_text_margin => $params{'top_text_margin'},
left_text_margin => $params{'left_text_margin'},
barcode_type => $params{'barcode_type'},
printing_type => $params{'printing_type'},
guidebox => $params{'guidebox'},
oblique_title => $params{'oblique_title'},
font => $params{'font'},
font_size => $params{'font_size'},
callnum_split => $params{'callnum_split'},
justify => $params{'justify'},
format_string => $params{'format_string'},
text_wrap_cols => $params{'text_wrap_cols'},
barcode => 0,
};
if ($self->{'guidebox'}) {
$self->{'guidebox'} = _guide_box($self->{'llx'}, $self->{'lly'}, $self->{'width'}, $self->{'height'});
}
bless ($self, $type);
return $self;
}
sub get_label_type {
my $self = shift;
return $self->{'printing_type'};
}
sub get_attr {
my $self = shift;
if (_check_params(@_) eq 1) {
return -1;
}
my ($attr) = @_;
if (exists($self->{$attr})) {
return $self->{$attr};
}
else {
return -1;
}
return;
}
sub create_label {
my $self = shift;
my $label_text = '';
my ($text_llx, $text_lly, $line_spacer, $barcode_llx, $barcode_lly, $barcode_width, $barcode_y_scale_factor);
{
no strict 'refs';
($text_llx, $text_lly, $line_spacer, $barcode_llx, $barcode_lly, $barcode_width, $barcode_y_scale_factor) = &{"_$self->{'printing_type'}"}($self); # an obfuscated call to the correct printing type sub
}
if ($self->{'printing_type'} =~ /BIB/) {
$label_text = draw_label_text( $self,
llx => $text_llx,
lly => $text_lly,
line_spacer => $line_spacer,
);
}
if ($self->{'printing_type'} =~ /BAR/) {
barcode( $self,
llx => $barcode_llx,
lly => $barcode_lly,
width => $barcode_width,
y_scale_factor => $barcode_y_scale_factor,
);
}
return $label_text if $label_text;
return;
}
sub draw_label_text {
my ($self, %params) = @_;
my @label_text = ();
my $text_llx = 0;
my $text_lly = $params{'lly'};
my $font = $self->{'font'};
my $item = _get_label_item($self->{'item_number'});
my $label_fields = _get_text_fields($self->{'format_string'});
my $record = GetMarcBiblio({ biblionumber => $item->{'biblionumber'} });
# FIXME - returns all items, so you can't get data from an embedded holdings field.
# TODO - add a GetMarcBiblio1item(bibnum,itemnum) or a GetMarcItem(itemnum).
my $cn_source = ($item->{'cn_source'} ? $item->{'cn_source'} : C4::Context->preference('DefaultClassificationSource'));
my $class_source = Koha::ClassSources->find( $cn_source );
my ( $split_routine, $regexs );
if ($class_source) {
my $class_split_rule = Koha::ClassSplitRules->find( $class_source->class_split_rule );
$split_routine = $class_split_rule->split_routine;
$regexs = $class_split_rule->regexs;
}
else { $split_routine = $cn_source }
LABEL_FIELDS: # process data for requested fields on current label
for my $field (@$label_fields) {
if ($field->{'code'} eq 'itemtype') {
$field->{'data'} = C4::Context->preference('item-level_itypes') ? $item->{'itype'} : $item->{'itemtype'};
}
else {
$field->{'data'} = _get_barcode_data($field->{'code'},$item,$record);
}
# Find appropriate font it oblique title selected, except main font is oblique
if ( ( $field->{'code'} eq 'title' ) and ( $self->{'oblique_title'} == 1 ) ) {
if ( $font =~ /^TB$/ ) {
$font .= 'I';
}
elsif ( $font =~ /^TR$/ ) {
$font = 'TI';
}
elsif ( $font !~ /^T/ and $font !~ /O$/ ) {
$font .= 'O';
}
}
my $field_data = $field->{'data'};
if ($field_data) {
$field_data =~ s/\n//g;
$field_data =~ s/\r//g;
}
my @label_lines;
# Fields which hold call number data FIXME: ( 060? 090? 092? 099? )
my @callnumber_list = qw(itemcallnumber 050a 050b 082a 952o 995k);
if ((grep {$field->{'code'} =~ m/$_/} @callnumber_list) and ($self->{'printing_type'} eq 'BIB') and ($self->{'callnum_split'})) { # If the field contains the call number, we do some sp
if ($split_routine eq 'LCC' || $split_routine eq 'nlm') { # NLM and LCC should be split the same way
@label_lines = C4::ClassSplitRoutine::LCC::split_callnumber($field_data);
@label_lines = C4::ClassSplitRoutine::Generic::split_callnumber($field_data) unless @label_lines; # If it was not a true lccn, try it as a custom call number
push (@label_lines, $field_data) unless @label_lines; # If it was not that, send it on unsplit
} elsif ($split_routine eq 'Dewey') {
@label_lines = C4::ClassSplitRoutine::Dewey::split_callnumber($field_data);
@label_lines = C4::ClassSplitRoutine::Generic::split_callnumber($field_data) unless @label_lines;
push (@label_lines, $field_data) unless @label_lines;
} elsif ($split_routine eq 'RegEx' ) {
@label_lines = C4::ClassSplitRoutine::RegEx::split_callnumber($field_data, $regexs);
@label_lines = C4::ClassSplitRoutine::Generic::split_callnumber($field_data) unless @label_lines;
push (@label_lines, $field_data) unless @label_lines;
} else {
warn sprintf('Call number splitting failed for: %s. Please add this call number to bug #2500 at bugs.koha-community.org', $field_data);
push @label_lines, $field_data;
}
}
else {
if ($field_data) {
$field_data =~ s/\/$//g; # Here we will strip out all trailing '/' in fields other than the call number...
# Escaping the parens was causing odd output, see bug 13124
# $field_data =~ s/\(/\\\(/g; # Escape '(' and ')' for the pdf object stream...
# $field_data =~ s/\)/\\\)/g;
}
eval{$Text::Wrap::columns = $self->{'text_wrap_cols'};};
my @line = split(/\n/ ,wrap('', '', $field_data));
# If this is a title field, limit to two lines; all others limit to one... FIXME: this is rather arbitrary
if ($field->{'code'} eq 'title' && scalar(@line) >= 2) {
while (scalar(@line) > 2) {
pop @line;
}
} else {
while (scalar(@line) > 1) {
pop @line;
}
}
push(@label_lines, @line);
}
LABEL_LINES: # generate lines of label text for current field
foreach my $line (@label_lines) {
next LABEL_LINES if $line eq '';
$line = log2vis( $line );
my $string_width = C4::Creators::PDF->StrWidth($line, $font, $self->{'font_size'});
if ($self->{'justify'} eq 'R') {
$text_llx = $params{'llx'} + $self->{'width'} - ($self->{'left_text_margin'} + $string_width);
}
elsif($self->{'justify'} eq 'C') {
# some code to try and center each line on the label based on font size and string point width...
my $whitespace = ($self->{'width'} - ($string_width + (2 * $self->{'left_text_margin'})));
$text_llx = (($whitespace / 2) + $params{'llx'} + $self->{'left_text_margin'});
}
else {
$text_llx = ($params{'llx'} + $self->{'left_text_margin'});
}
push @label_text, {
text_llx => $text_llx,
text_lly => $text_lly,
font => $font,
font_size => $self->{'font_size'},
line => $line,
};
$text_lly = $text_lly - $params{'line_spacer'};
}
$font = $self->{'font'}; # reset font for next field
} #foreach field
return \@label_text;
}
sub draw_guide_box {
return $_[0]->{'guidebox'};
}
sub barcode {
my $self = shift;
my %params = @_;
$params{'barcode_data'} = _get_label_item($self->{'item_number'}, 1) if !$params{'barcode_data'};
$params{'barcode_type'} = $self->{'barcode_type'} if !$params{'barcode_type'};
my $x_scale_factor = 1;
my $num_of_bars = length($params{'barcode_data'});
my $tot_bar_length = 0;
my $bar_length = 0;
my $guard_length = 10;
my $hide_text = 'yes';
if ($params{'barcode_type'} =~ m/CODE39/) {
$bar_length = '17.5';
$tot_bar_length = ($bar_length * $num_of_bars) + ($guard_length * 2);
$x_scale_factor = ($params{'width'} / $tot_bar_length);
if ($params{'barcode_type'} eq 'CODE39MOD') {
my $c39 = CheckDigits('code_39'); # get modulo43 checksum
$params{'barcode_data'} = $c39->complete($params{'barcode_data'});
}
elsif ($params{'barcode_type'} eq 'CODE39MOD10') {
my $c39_10 = CheckDigits('siret'); # get modulo43 checksum
$params{'barcode_data'} = $c39_10->complete($params{'barcode_data'});
$hide_text = '';
}
eval {
PDF::Reuse::Barcode::Code39(
x => $params{'llx'},
y => $params{'lly'},
value => "*$params{barcode_data}*",
xSize => $x_scale_factor,
ySize => $params{'y_scale_factor'},
hide_asterisk => 1,
text => $hide_text,
mode => 'graphic',
);
};
if ($@) {
warn sprintf('Barcode generation failed for item %s with this error: %s', $self->{'item_number'}, $@);
}
}
elsif ($params{'barcode_type'} eq 'COOP2OF5') {
$bar_length = '9.43333333333333';
$tot_bar_length = ($bar_length * $num_of_bars) + ($guard_length * 2);
$x_scale_factor = ($params{'width'} / $tot_bar_length) * 0.9;
eval {
PDF::Reuse::Barcode::COOP2of5(
x => $params{'llx'},
y => $params{'lly'},
value => $params{barcode_data},
xSize => $x_scale_factor,
ySize => $params{'y_scale_factor'},
mode => 'graphic',
);
};
if ($@) {
warn sprintf('Barcode generation failed for item %s with this error: %s', $self->{'item_number'}, $@);
}
}
elsif ( $params{'barcode_type'} eq 'INDUSTRIAL2OF5' ) {
$bar_length = '13.1333333333333';
$tot_bar_length = ($bar_length * $num_of_bars) + ($guard_length * 2);
$x_scale_factor = ($params{'width'} / $tot_bar_length) * 0.9;
eval {
PDF::Reuse::Barcode::Industrial2of5(
x => $params{'llx'},
y => $params{'lly'},
value => $params{barcode_data},
xSize => $x_scale_factor,
ySize => $params{'y_scale_factor'},
mode => 'graphic',
);
};
if ($@) {
warn sprintf('Barcode generation failed for item %s with this error: %s', $self->{'item_number'}, $@);
}
}
elsif ($params{'barcode_type'} eq 'EAN13') {
$bar_length = 4; # FIXME
$num_of_bars = 13;
$tot_bar_length = ($bar_length * $num_of_bars) + ($guard_length * 2);
$x_scale_factor = ($params{'width'} / $tot_bar_length) * 0.9;
eval {
PDF::Reuse::Barcode::EAN13(
x => $params{'llx'},
y => $params{'lly'},
value => sprintf('%013d',$params{barcode_data}),
# xSize => $x_scale_factor,
# ySize => $params{'y_scale_factor'},
mode => 'graphic',
);
};
if ($@) {
warn sprintf('Barcode generation failed for item %s with this error: %s', $self->{'item_number'}, $@);
}
}
else {
warn "unknown barcode_type: $params{barcode_type}";
}
}
sub csv_data {
my $self = shift;
my $label_fields = _get_text_fields($self->{'format_string'});
my $item = _get_label_item($self->{'item_number'});
my $bib_record = GetMarcBiblio({ biblionumber => $item->{biblionumber} });
my @csv_data = (map { _get_barcode_data($_->{'code'},$item,$bib_record) } @$label_fields);
return \@csv_data;
}
1;
__END__
=head1 NAME
C4::Labels::Label - A class for creating and manipulating label objects in Koha
=head1 ABSTRACT
This module provides methods for creating, and otherwise manipulating single label objects used by Koha to create and export labels.
=head1 METHODS
=head2 new()
Invoking the I<new> method constructs a new label object containing the supplied values. Depending on the final output format of the label data
the minimal required parameters change. (See the implimentation of this object type in labels/label-create-pdf.pl and labels/label-create-csv.pl
and labels/label-create-xml.pl for examples.) The following parameters are optionally accepted as key => value pairs:
C<batch_id> Batch id with which this label is associated
C<item_number> Item number of item to be the data source for this label
C<height> Height of this label (All measures passed to this method B<must> be supplied in postscript points)
C<width> Width of this label
C<top_text_margin> Top margin of this label
C<left_text_margin> Left margin of this label
C<barcode_type> Defines the barcode type to be used on labels. NOTE: At present only the following barcode types are supported in the label creator code:
=over 9
=item .
CODE39 = Code 3 of 9
=item .
CODE39MOD = Code 3 of 9 with modulo 43 checksum
=item .
CODE39MOD10 = Code 3 of 9 with modulo 10 checksum
=item .
COOP2OF5 = A variant of 2 of 5 barcode based on NEC's "Process 8000" code
=item .
INDUSTRIAL2OF5 = The standard 2 of 5 barcode (a binary level bar code developed by Identicon Corp. and Computer Identics Corp. in 1970)
=item .
EAN13 = The standard EAN-13 barcode
=back
C<printing_type> Defines the general layout to be used on labels. NOTE: At present there are only five printing types supported in the label creator code:
=over 9
=item .
BIB = Only the bibliographic data is printed
=item .
BARBIB = Barcode proceeds bibliographic data
=item .
BIBBAR = Bibliographic data proceeds barcode
=item .
ALT = Barcode and bibliographic data are printed on alternating labels
=item .
BAR = Only the barcode is printed
=back
C<guidebox> Setting this to '1' will result in a guide box being drawn around the labels marking the edge of each label
C<font> Defines the type of font to be used on labels. NOTE: The following fonts are available by default on most systems:
=over 9
=item .
TR = Times-Roman
=item .
TB = Times Bold
=item .
TI = Times Italic
=item .
TBI = Times Bold Italic
=item .
C = Courier
=item .
CB = Courier Bold
=item .
CO = Courier Oblique (Italic)
=item .
CBO = Courier Bold Oblique
=item .
H = Helvetica
=item .
HB = Helvetica Bold
=item .
HBO = Helvetical Bold Oblique
=back
C<font_size> Defines the size of the font in postscript points to be used on labels
C<callnum_split> Setting this to '1' will enable call number splitting on labels
C<text_justify> Defines the text justification to be used on labels. NOTE: The following justification styles are currently supported by label creator code:
=over 9
=item .
L = Left
=item .
C = Center
=item .
R = Right
=back
C<format_string> Defines what fields will be printed and in what order they will be printed on labels. These include any of the data fields that may be mapped
to your MARC frameworks. Specify MARC subfields as a 4-character tag-subfield string: ie. 254a Enclose a whitespace-separated list of fields
to concatenate on one line in double quotes. ie. "099a 099b" or "itemcallnumber barcode" Static text strings may be entered in single-quotes:
ie. 'Some static text here.'
C<text_wrap_cols> Defines the column after which the text will wrap to the next line.
=head2 get_label_type()
Invoking the I<get_label_type> method will return the printing type of the label object.
example:
C<my $label_type = $label->get_label_type();>
=head2 get_attr($attribute)
Invoking the I<get_attr> method will return the value of the requested attribute or -1 on errors.
example:
C<my $value = $label->get_attr($attribute);>
=head2 create_label()
Invoking the I<create_label> method generates the text for that label and returns it as an arrayref of an array contianing the formatted text as well as creating the barcode
and writing it directly to the pdf stream. The handling of the barcode is not quite good OO form due to the linear format of PDF::Reuse::Barcode. Be aware that the instantiating
code is responsible to properly format the text for insertion into the pdf stream as well as the actual insertion.
example:
my $label_text = $label->create_label();
=head2 draw_label_text()
Invoking the I<draw_label_text> method generates the label text for the label object and returns it as an arrayref of an array containing the formatted text. The same caveats
apply to this method as to C<create_label()>. This method accepts the following parameters as key => value pairs: (NOTE: The unit is the postscript point - 72 per inch)
C<llx> The lower-left x coordinate for the text block (The point of origin for all PDF's is the lower left of the page per ISO 32000-1)
C<lly> The lower-left y coordinate for the text block
C<top_text_margin> The top margin for the text block.
C<line_spacer> The number of pixels between text rows (This is actually leading: baseline to baseline minus font size. Recommended starting point is 20% of font size)
C<font> The font to use for this label. See documentation on the new() method for supported fonts.
C<font_size> The font size in points to use for this label.
C<justify> The style of justification to use for this label. See documentation on the new() method for supported justification styles.
example:
C<my $label_text = $label->draw_label_text(
llx => $text_llx,
lly => $text_lly,
top_text_margin => $label_top_text_margin,
line_spacer => $text_leading,
font => $text_font,
font_size => $text_font_size,
justify => $text_justification,
);>
=head2 barcode()
Invoking the I<barcode> method generates a barcode for the label object and inserts it into the current pdf stream. This method accepts the following parameters as key => value
pairs (C<barcode_data> is optional and omitting it will cause the barcode from the current item to be used. C<barcode_type> is also optional. Omission results in the barcode
type of the current template being used.):
C<llx> The lower-left x coordinate for the barcode block (The point of origin for all PDF's is the lower left of the page per ISO 32000-1)
C<lly> The lower-left y coordinate for the barcode block
C<width> The width of the barcode block
C<y_scale_factor> The scale factor to be applied to the y axis of the barcode block
C<barcode_data> The data to be encoded in the barcode
C<barcode_type> The barcode type (See the C<new()> method for supported barcode types)
example:
C<$label->barcode(
llx => $barcode_llx,
lly => $barcode_lly,
width => $barcode_width,
y_scale_factor => $barcode_y_scale_factor,
barcode_data => $barcode,
barcode_type => $barcodetype,
);>
=head2 csv_data()
Invoking the I<csv_data> method returns an arrayref of an array containing the label data suitable for passing to Text::CSV_XS->combine() to produce csv output.
example:
C<my $csv_data = $label->csv_data();>
=head1 AUTHOR
Mason James <mason@katipo.co.nz>
Chris Nighswonger <cnighswonger AT foundations DOT edu>
=head1 COPYRIGHT
Copyright 2006 Katipo Communications.
Copyright 2009 Foundations Bible College.
=head1 LICENSE
This file is part of Koha.
Koha is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later version.
You should have received a copy of the GNU General Public License along with Koha; if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
Fifth Floor, Boston, MA 02110-1301 USA.
=head1 DISCLAIMER OF WARRANTY
Koha is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
=cut
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