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use WebPAC::Common; |
use WebPAC::Common; |
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use base qw/WebPAC::Common/; |
use base qw/WebPAC::Common/; |
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use Text::Iconv; |
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use Data::Dumper; |
use Data::Dumper; |
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use Encode qw/from_to/; |
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=head1 NAME |
=head1 NAME |
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=head1 VERSION |
=head1 VERSION |
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Version 0.11 |
Version 0.13 |
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=cut |
=cut |
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our $VERSION = '0.11'; |
our $VERSION = '0.13'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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#eval $self->{module} .'->import'; |
#eval $self->{module} .'->import'; |
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# check if required subclasses are implemented |
# check if required subclasses are implemented |
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foreach my $subclass (qw/open_db fetch_rec init/) { |
foreach my $subclass (qw/open_db fetch_rec init dump_rec/) { |
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my $n = $self->{module} . '::' . $subclass; |
my $n = $self->{module} . '::' . $subclass; |
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if (! defined &{ $n }) { |
if (! defined &{ $n }) { |
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my $missing = "missing $subclass in $self->{module}"; |
my $missing = "missing $subclass in $self->{module}"; |
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$input->open( |
$input->open( |
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path => '/path/to/database/file', |
path => '/path/to/database/file', |
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code_page => '852', |
code_page => 'cp852', |
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limit => 500, |
limit => 500, |
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offset => 6000, |
offset => 6000, |
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lookup => $lookup_obj, |
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stats => 1, |
stats => 1, |
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lookup_ref => sub { |
lookup_coderef => sub { |
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my ($k,$v) = @_; |
my $rec = shift; |
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# store lookup $k => $v |
# store lookups |
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}, |
}, |
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modify_records => { |
modify_records => { |
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900 => { '^a' => { ' : ' => '^b' } }, |
900 => { '^a' => { ' : ' => '^b' } }, |
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901 => { '*' => { '^b' => ' ; ' } }, |
901 => { '*' => { '^b' => ' ; ' } }, |
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}, |
}, |
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modify_file => 'conf/modify/mapping.map', |
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); |
); |
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By default, C<code_page> is assumed to be C<852>. |
By default, C<code_page> is assumed to be C<cp852>. |
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C<offset> is optional parametar to position at some offset before reading from database. |
C<offset> is optional parametar to position at some offset before reading from database. |
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C<stats> create optional report about usage of fields and subfields |
C<stats> create optional report about usage of fields and subfields |
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C<lookup_coderef> is closure to call when adding C<< key => 'value' >> combinations to |
C<lookup_coderef> is closure to called to save data into lookups |
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lookup. |
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C<modify_records> specify mapping from subfields to delimiters or from |
C<modify_records> specify mapping from subfields to delimiters or from |
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delimiters to subfields, as well as oprations on fields (if subfield is |
delimiters to subfields, as well as oprations on fields (if subfield is |
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defined as C<*>. |
defined as C<*>. |
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C<modify_file> is alternative for C<modify_records> above which preserves order and offers |
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(hopefully) simplier sintax than YAML or perl (see L</modify_file_regex>). This option |
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overrides C<modify_records> if both exists for same input. |
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Returns size of database, regardless of C<offset> and C<limit> |
Returns size of database, regardless of C<offset> and C<limit> |
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parametars, see also C<size>. |
parametars, see also C<size>. |
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$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
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if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
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$log->debug( $arg->{lookup_coderef} ? '' : 'not ', "using lookup_coderef"); |
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$log->logcroak("need path") if (! $arg->{'path'}); |
$log->logcroak("need path") if (! $arg->{'path'}); |
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my $code_page = $arg->{'code_page'} || '852'; |
my $code_page = $arg->{'code_page'} || 'cp852'; |
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# store data in object |
# store data in object |
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$self->{'input_code_page'} = $code_page; |
$self->{'input_code_page'} = $code_page; |
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$self->{$v} = $arg->{$v} if ($arg->{$v}); |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
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} |
} |
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# create Text::Iconv object |
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$self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! |
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my $filter_ref; |
my $filter_ref; |
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my $recode_regex; |
my $recode_regex; |
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my $recode_map; |
my $recode_map; |
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} |
} |
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my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} }); |
my $rec_regex; |
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$log->debug("rec_regex: ", Dumper($rec_regex)); |
if (my $p = $arg->{modify_file}) { |
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$log->debug("using modify_file $p"); |
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$rec_regex = $self->modify_file_regexps( $p ); |
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} elsif (my $h = $arg->{modify_records}) { |
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$log->debug("using modify_records ", Dumper( $h )); |
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$rec_regex = $self->modify_record_regexps(%{ $h }); |
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} |
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$log->debug("rec_regex: ", Dumper($rec_regex)) if ($rec_regex); |
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my ($db, $size) = $self->{open_db}->( $self, |
my ($db, $size) = $self->{open_db}->( $self, |
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path => $arg->{path}, |
path => $arg->{path}, |
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filter => sub { |
# filter => sub { |
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my ($l,$f_nr) = @_; |
# my ($l,$f_nr) = @_; |
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return unless defined($l); |
# return unless defined($l); |
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# from_to($l, $code_page, $self->{'encoding'}); |
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## FIXME remove iconv! |
# $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
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$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
# return $l; |
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# }, |
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$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
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## FIXME remove this warning when we are sure that none of API is calling |
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## this wrongly |
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warn "filter called without field number" unless ($f_nr); |
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return $l; |
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}, |
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%{ $arg }, |
%{ $arg }, |
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); |
); |
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$log->debug("position: $pos\n"); |
$log->debug("position: $pos\n"); |
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my $rec = $self->{fetch_rec}->($self, $db, $pos, sub { |
my $rec = $self->{fetch_rec}->($self, $pos, sub { |
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my ($l,$f_nr) = @_; |
my ($l,$f_nr) = @_; |
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return unless defined($l); |
# return unless defined($l); |
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return $l unless ($rec_regex && $f_nr); |
# return $l unless ($rec_regex && $f_nr); |
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$log->debug("-=> $f_nr ## $l"); |
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# codepage conversion and recode_regex |
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from_to($l, $code_page, $self->{'encoding'}); |
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$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
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# apply regexps |
# apply regexps |
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if ($rec_regex && defined($rec_regex->{$f_nr})) { |
if ($rec_regex && defined($rec_regex->{$f_nr})) { |
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$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
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my $c = 0; |
my $c = 0; |
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foreach my $r (@{ $rec_regex->{$f_nr} }) { |
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
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#$log->debug("\$l = $l\neval \$l =~ $r"); |
my $old_l = $l; |
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eval '$l =~ ' . $r; |
eval '$l =~ ' . $r; |
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if ($old_l ne $l) { |
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$log->debug("REGEX on $f_nr eval \$l =~ $r\n## old l: [$old_l]\n## new l: [$l]"); |
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} |
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$log->error("error applying regex: $r") if ($@); |
$log->error("error applying regex: $r") if ($@); |
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} |
} |
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} |
} |
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$log->debug("<=- $f_nr ## $l"); |
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return $l; |
return $l; |
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}); |
}); |
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if ($self->{stats}) { |
if ($self->{stats}) { |
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# fetch clean record with regexpes applied for statistics |
# fetch clean record with regexpes applied for statistics |
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my $rec = $self->{fetch_rec}->($self, $db, $pos); |
my $rec = $self->{fetch_rec}->($self, $pos); |
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foreach my $fld (keys %{ $rec }) { |
foreach my $fld (keys %{ $rec }) { |
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$self->{_stats}->{fld}->{ $fld }++; |
$self->{_stats}->{fld}->{ $fld }++; |
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return $out; |
return $out; |
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} |
} |
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=head2 dump |
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Display humanly readable dump of record |
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=cut |
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sub dump { |
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my $self = shift; |
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return $self->{dump_rec}->($self, $self->{pos}); |
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} |
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=head2 modify_record_regexps |
=head2 modify_record_regexps |
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Generate hash with regexpes to be applied using L<filter>. |
Generate hash with regexpes to be applied using l<filter>. |
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my $regexpes = $input->modify_record_regexps( |
my $regexpes = $input->modify_record_regexps( |
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900 => { '^a' => { ' : ' => '^b' } }, |
900 => { '^a' => { ' : ' => '^b' } }, |
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=cut |
=cut |
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sub _get_regex { |
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my ($sf,$from,$to) = @_; |
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if ($sf =~ /^\^/) { |
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return |
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's/\Q'. $sf .'\E([^\^]*?)\Q'. $from .'\E([^\^]*?)/'. $sf .'$1'. $to .'$2/'; |
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} else { |
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return |
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's/\Q'. $from .'\E/'. $to .'/g'; |
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} |
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} |
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sub modify_record_regexps { |
sub modify_record_regexps { |
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my $self = shift; |
my $self = shift; |
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my $modify_record = {@_}; |
my $modify_record = {@_}; |
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my $regexpes; |
my $regexpes; |
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my $log = $self->_get_logger(); |
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foreach my $f (keys %$modify_record) { |
foreach my $f (keys %$modify_record) { |
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warn "--- f: $f\n"; |
$log->debug("field: $f"); |
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foreach my $sf (keys %{ $modify_record->{$f} }) { |
foreach my $sf (keys %{ $modify_record->{$f} }) { |
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warn "---- sf: $sf\n"; |
$log->debug("subfield: $sf"); |
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foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
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my $to = $modify_record->{$f}->{$sf}->{$from}; |
my $to = $modify_record->{$f}->{$sf}->{$from}; |
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#die "no field?" unless defined($to); |
#die "no field?" unless defined($to); |
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warn "----- transform: |$from| -> |$to|\n"; |
$log->debug("transform: |$from| -> |$to|"); |
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if ($sf =~ /^\^/) { |
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my $regex = |
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's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g'; |
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push @{ $regexpes->{$f} }, $regex; |
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warn ">>>>> $regex [sf]\n"; |
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} else { |
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my $regex = |
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's/\Q'. $from .'\E/'. $to .'/g'; |
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push @{ $regexpes->{$f} }, $regex; |
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warn ">>>>> $regex [global]\n"; |
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} |
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my $regex = _get_regex($sf,$from,$to); |
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push @{ $regexpes->{$f} }, $regex; |
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$log->debug("regex: $regex"); |
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} |
} |
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} |
} |
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} |
} |
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return $regexpes; |
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} |
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=head2 modify_file_regexps |
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Generate hash with regexpes to be applied using l<filter> from |
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pseudo hash/yaml format for regex mappings. |
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It should be obvious: |
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200 |
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'^a' |
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' : ' => '^e' |
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' = ' => '^d' |
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In field I<200> find C<'^a'> and then C<' : '>, and replace it with C<'^e'>. |
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In field I<200> find C<'^a'> and then C<' = '>, and replace it with C<'^d'>. |
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my $regexpes = $input->modify_file_regexps( 'conf/modify/common.pl' ); |
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On undef path it will just return. |
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=cut |
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sub modify_file_regexps { |
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my $self = shift; |
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my $modify_path = shift || return; |
638 |
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my $log = $self->_get_logger(); |
640 |
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my $regexpes; |
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CORE::open(my $fh, $modify_path) || $log->logdie("can't open modify file $modify_path: $!"); |
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my ($f,$sf); |
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while(<$fh>) { |
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chomp; |
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next if (/^#/ || /^\s*$/); |
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if (/^\s*(\d+)\s*$/) { |
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$f = $1; |
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$log->debug("field: $f"); |
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next; |
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} elsif (/^\s*'([^']*)'\s*$/) { |
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$sf = $1; |
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$log->die("can't define subfiled before field in: $_") unless ($f); |
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$log->debug("subfield: $sf"); |
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} elsif (/^\s*'([^']*)'\s*=>\s*'([^']*)'\s*$/) { |
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my ($from,$to) = ($1, $2); |
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$log->debug("transform: |$from| -> |$to|"); |
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my $regex = _get_regex($sf,$from,$to); |
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push @{ $regexpes->{$f} }, $regex; |
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$log->debug("regex: $regex"); |
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} |
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} |
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return $regexpes; |
return $regexpes; |
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} |
} |
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