8 |
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; |
use Text::Iconv; |
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use Data::Dumper; |
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|
13 |
=head1 NAME |
=head1 NAME |
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=head1 VERSION |
=head1 VERSION |
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|
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Version 0.03 |
Version 0.08 |
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=cut |
=cut |
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our $VERSION = '0.03'; |
our $VERSION = '0.08'; |
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|
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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|
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Perhaps a little code snippet. |
Perhaps a little code snippet. |
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|
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use WebPAC::Input; |
use WebPAC::Input; |
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|
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my $db = WebPAC::Input->new( |
my $db = WebPAC::Input->new( |
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module => 'WebPAC::Input::ISIS', |
module => 'WebPAC::Input::ISIS', |
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config => $config, |
|
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lookup => $lookup_obj, |
|
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low_mem => 1, |
low_mem => 1, |
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); |
); |
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|
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$db->open('/path/to/database'); |
$db->open( path => '/path/to/database' ); |
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print "database size: ",$db->size,"\n"; |
print "database size: ",$db->size,"\n"; |
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while (my $rec = $db->fetch) { |
while (my $rec = $db->fetch) { |
52 |
} |
# do something with $rec |
53 |
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} |
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my $db = new WebPAC::Input( |
my $db = new WebPAC::Input( |
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module => 'WebPAC::Input::MARC', |
module => 'WebPAC::Input::MARC', |
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code_page => 'ISO-8859-2', |
encoding => 'ISO-8859-2', |
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low_mem => 1, |
low_mem => 1, |
67 |
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recode => 'char pairs', |
68 |
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no_progress_bar => 1, |
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); |
); |
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|
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C<module> is low-level file format module. See L<WebPAC::Input::Isis> and |
C<module> is low-level file format module. See L<WebPAC::Input::ISIS> and |
72 |
L<WebPAC::Input::MARC>. |
L<WebPAC::Input::MARC>. |
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|
|
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Optional parametar C<code_page> specify application code page (which will be |
Optional parametar C<encoding> specify application code page (which will be |
75 |
used internally). This should probably be your terminal encoding, and by |
used internally). This should probably be your terminal encoding, and by |
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default, it C<ISO-8859-2>. |
default, it C<ISO-8859-2>. |
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|
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Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
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C<recode> is optional string constisting of character or words pairs that |
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should be replaced in input stream. |
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C<no_progress_bar> disables progress bar output on C<STDOUT> |
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This function will also call low-level C<init> if it exists with same |
This function will also call low-level C<init> if it exists with same |
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parametars. |
parametars. |
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my $log = $self->_get_logger; |
my $log = $self->_get_logger; |
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$log->logconfess("code_page argument is not suppored any more. change it to encoding") if ($self->{lookup}); |
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$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup}); |
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$log->logconfess("specify low-level file format module") unless ($self->{module}); |
$log->logconfess("specify low-level file format module") unless ($self->{module}); |
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my $module = $self->{module}; |
my $module = $self->{module}; |
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$module =~ s#::#/#g; |
$module =~ s#::#/#g; |
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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 $self->{module}"; |
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$log->logwarn($missing); |
$self->{$subclass} = sub { $log->logwarn($missing) }; |
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$self->{$subclass} = sub { warn "$missing\n" }; |
|
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} else { |
} else { |
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$self->{$subclass} = \&{ $n }; |
$self->{$subclass} = \&{ $n }; |
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} |
} |
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$self->{init}->($self, @_); |
$self->{init}->($self, @_); |
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} |
} |
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$self->{'code_page'} ||= 'ISO-8859-2'; |
$self->{'encoding'} ||= 'ISO-8859-2'; |
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# running with low_mem flag? well, use DBM::Deep then. |
# running with low_mem flag? well, use DBM::Deep then. |
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if ($self->{'low_mem'}) { |
if ($self->{'low_mem'}) { |
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limit => 500, |
limit => 500, |
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offset => 6000, |
offset => 6000, |
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lookup => $lookup_obj, |
lookup => $lookup_obj, |
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stats => 1, |
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lookup_ref => sub { |
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my ($k,$v) = @_; |
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# store lookup $k => $v |
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}, |
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modify_records => { |
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900 => { '^a' => { ' : ' => '^b' } }, |
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901 => { '*' => { '^b' => ' ; ' } }, |
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}, |
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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<852>. |
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C<limit> is optional parametar to read just C<limit> records from database |
C<limit> is optional parametar to read just C<limit> records from database |
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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 |
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lookup. |
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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 |
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defined as C<*>. |
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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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my $log = $self->_get_logger(); |
my $log = $self->_get_logger(); |
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$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_coderef") if ($arg->{lookup}); |
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$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
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if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
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$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 = $arg->{'code_page'} || '852'; |
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} |
} |
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# create Text::Iconv object |
# create Text::Iconv object |
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$self->{iconv} = Text::Iconv->new($code_page,$self->{'code_page'}); |
$self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! |
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my $filter_ref; |
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my $recode_regex; |
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my $recode_map; |
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if ($self->{recode}) { |
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my @r = split(/\s/, $self->{recode}); |
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if ($#r % 2 != 1) { |
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$log->logwarn("recode needs even number of elements (some number of valid pairs)"); |
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} else { |
228 |
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while (@r) { |
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my $from = shift @r; |
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my $to = shift @r; |
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$recode_map->{$from} = $to; |
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} |
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$recode_regex = join '|' => keys %{ $recode_map }; |
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$log->debug("using recode regex: $recode_regex"); |
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} |
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} |
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my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} }); |
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$log->debug("rec_regex: ", Dumper($rec_regex)); |
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my ($db, $size) = $self->{open_db}->( $self, |
my ($db, $size) = $self->{open_db}->( $self, |
245 |
path => $arg->{path}, |
path => $arg->{path}, |
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filter => sub { |
247 |
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my ($l,$f_nr) = @_; |
248 |
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return unless defined($l); |
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250 |
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## FIXME remove iconv! |
251 |
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$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
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$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
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return $l unless ($rec_regex); |
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# apply regexps |
258 |
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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'); |
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my $c = 0; |
261 |
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foreach my $r (@{ $rec_regex->{$f_nr} }) { |
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while ( eval '$l =~ ' . $r ) { $c++ }; |
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} |
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warn "## field $f_nr triggered $c regexpes\n" if ($c && $self->{debug}); |
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} |
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return $l; |
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}, |
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%{ $arg }, |
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); |
); |
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unless ($db) { |
unless (defined($db)) { |
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$log->logwarn("can't open database $arg->{path}, skipping..."); |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
274 |
return; |
return; |
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} |
} |
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return; |
return; |
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} |
} |
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my $offset = 1; |
my $from_rec = 1; |
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my $limit = $size; |
my $to_rec = $size; |
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if (my $s = $self->{offset}) { |
if (my $s = $self->{offset}) { |
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$log->info("skipping to MFN $s"); |
$log->debug("skipping to MFN $s"); |
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$offset = $s; |
$from_rec = $s; |
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} else { |
} else { |
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$self->{offset} = $offset; |
$self->{offset} = $from_rec; |
290 |
} |
} |
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|
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if ($self->{limit}) { |
if ($self->{limit}) { |
293 |
$log->info("limiting to ",$self->{limit}," records"); |
$log->debug("limiting to ",$self->{limit}," records"); |
294 |
$limit = $offset + $self->{limit} - 1; |
$to_rec = $from_rec + $self->{limit} - 1; |
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$limit = $size if ($limit > $size); |
$to_rec = $size if ($to_rec > $size); |
296 |
} |
} |
297 |
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|
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# store size for later |
# store size for later |
299 |
$self->{size} = ($limit - $offset) ? ($limit - $offset + 1) : 0; |
$self->{size} = ($to_rec - $from_rec) ? ($to_rec - $from_rec + 1) : 0; |
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|
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$log->info("processing $self->{size} records in $code_page, convert to $self->{code_page}"); |
$log->info("processing $self->{size}/$size records [$from_rec-$to_rec] convert $code_page -> $self->{encoding}", $self->{stats} ? ' [stats]' : ''); |
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|
303 |
# read database |
# read database |
304 |
for (my $pos = $offset; $pos <= $limit; $pos++) { |
for (my $pos = $from_rec; $pos <= $to_rec; $pos++) { |
305 |
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|
306 |
$log->debug("position: $pos\n"); |
$log->debug("position: $pos\n"); |
307 |
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|
308 |
my $rec = $self->{fetch_rec}->($self, $db, $pos ); |
my $rec = $self->{fetch_rec}->($self, $db, $pos ); |
309 |
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|
310 |
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$log->debug(sub { Dumper($rec) }); |
311 |
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|
312 |
if (! $rec) { |
if (! $rec) { |
313 |
$log->warn("record $pos empty? skipping..."); |
$log->warn("record $pos empty? skipping..."); |
314 |
next; |
next; |
322 |
} |
} |
323 |
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|
324 |
# create lookup |
# create lookup |
325 |
$self->{'lookup'}->add( $rec ) if ($rec && $self->{'lookup'}); |
$arg->{'lookup_coderef'}->( $rec ) if ($rec && $arg->{'lookup_coderef'}); |
326 |
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|
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# update counters for statistics |
328 |
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if ($self->{stats}) { |
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330 |
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foreach my $fld (keys %{ $rec }) { |
331 |
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$self->{_stats}->{fld}->{ $fld }++; |
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$log->logdie("invalid record fild $fld, not ARRAY") |
334 |
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unless (ref($rec->{ $fld }) eq 'ARRAY'); |
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336 |
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foreach my $row (@{ $rec->{$fld} }) { |
337 |
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|
338 |
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if (ref($row) eq 'HASH') { |
339 |
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|
340 |
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foreach my $sf (keys %{ $row }) { |
341 |
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$self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++; |
342 |
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$self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++ |
343 |
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if (ref($row->{$sf}) eq 'ARRAY'); |
344 |
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} |
345 |
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|
346 |
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} else { |
347 |
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$self->{_stats}->{repeatable}->{ $fld }++; |
348 |
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} |
349 |
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} |
350 |
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} |
351 |
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} |
352 |
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|
353 |
$self->progress_bar($pos,$limit); |
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar}); |
354 |
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|
355 |
} |
} |
356 |
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|
358 |
$self->{last_pcnt} = 0; |
$self->{last_pcnt} = 0; |
359 |
|
|
360 |
# store max mfn and return it. |
# store max mfn and return it. |
361 |
$self->{max_pos} = $limit; |
$self->{max_pos} = $to_rec; |
362 |
$log->debug("max_pos: $limit"); |
$log->debug("max_pos: $to_rec"); |
363 |
|
|
364 |
return $size; |
return $size; |
365 |
} |
} |
396 |
return; |
return; |
397 |
} |
} |
398 |
|
|
399 |
$self->progress_bar($mfn,$self->{max_pos}); |
$self->progress_bar($mfn,$self->{max_pos}) unless ($self->{no_progress_bar}); |
400 |
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|
401 |
my $rec; |
my $rec; |
402 |
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|
471 |
return $self->{pos} = (($pos - 1) || -1); |
return $self->{pos} = (($pos - 1) || -1); |
472 |
} |
} |
473 |
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|
474 |
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=head2 stats |
475 |
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|
476 |
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Dump statistics about field and subfield usage |
477 |
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|
478 |
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print $input->stats; |
479 |
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|
480 |
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=cut |
481 |
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482 |
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sub stats { |
483 |
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my $self = shift; |
484 |
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485 |
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my $log = $self->_get_logger(); |
486 |
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|
487 |
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my $s = $self->{_stats}; |
488 |
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if (! $s) { |
489 |
|
$log->warn("called stats, but there is no statistics collected"); |
490 |
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return; |
491 |
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} |
492 |
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493 |
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my $max_fld = 0; |
494 |
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|
495 |
|
my $out = join("\n", |
496 |
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map { |
497 |
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my $f = $_ || die "no field"; |
498 |
|
my $v = $s->{fld}->{$f} || die "no s->{fld}->{$f}"; |
499 |
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$max_fld = $v if ($v > $max_fld); |
500 |
|
|
501 |
|
my $o = sprintf("%4s %d ~", $f, $v); |
502 |
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|
503 |
|
if (defined($s->{sf}->{$f})) { |
504 |
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map { |
505 |
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$o .= sprintf(" %s:%d%s", $_, |
506 |
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$s->{sf}->{$f}->{$_}->{count}, |
507 |
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$s->{sf}->{$f}->{$_}->{repeatable} ? '*' : '', |
508 |
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); |
509 |
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} sort keys %{ $s->{sf}->{$f} }; |
510 |
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} |
511 |
|
|
512 |
|
if (my $v_r = $s->{repeatable}->{$f}) { |
513 |
|
$o .= " ($v_r)" if ($v_r != $v); |
514 |
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} |
515 |
|
|
516 |
|
$o; |
517 |
|
} sort { $a cmp $b } keys %{ $s->{fld} } |
518 |
|
); |
519 |
|
|
520 |
|
$log->debug( sub { Dumper($s) } ); |
521 |
|
|
522 |
|
return $out; |
523 |
|
} |
524 |
|
|
525 |
|
=head1 modify_record_regexps |
526 |
|
|
527 |
|
Generate hash with regexpes to be applied using L<filter>. |
528 |
|
|
529 |
|
my $regexpes = $input->modify_record_regexps( |
530 |
|
900 => { '^a' => { ' : ' => '^b' } }, |
531 |
|
901 => { '*' => { '^b' => ' ; ' } }, |
532 |
|
); |
533 |
|
|
534 |
|
=cut |
535 |
|
|
536 |
|
sub modify_record_regexps { |
537 |
|
my $self = shift; |
538 |
|
my $modify_record = {@_}; |
539 |
|
|
540 |
|
my $regexpes; |
541 |
|
|
542 |
|
foreach my $f (keys %$modify_record) { |
543 |
|
warn "--- f: $f\n"; |
544 |
|
foreach my $sf (keys %{ $modify_record->{$f} }) { |
545 |
|
warn "---- sf: $sf\n"; |
546 |
|
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
547 |
|
my $to = $modify_record->{$f}->{$sf}->{$from}; |
548 |
|
#die "no field?" unless defined($to); |
549 |
|
warn "----- transform: |$from| -> |$to|\n"; |
550 |
|
|
551 |
|
if ($sf =~ /^\^/) { |
552 |
|
my $regex = |
553 |
|
's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g'; |
554 |
|
push @{ $regexpes->{$f} }, $regex; |
555 |
|
warn ">>>>> $regex [sf]\n"; |
556 |
|
} else { |
557 |
|
my $regex = |
558 |
|
's/\Q'. $from .'\E/'. $to .'/g'; |
559 |
|
push @{ $regexpes->{$f} }, $regex; |
560 |
|
warn ">>>>> $regex [global]\n"; |
561 |
|
} |
562 |
|
|
563 |
|
} |
564 |
|
} |
565 |
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} |
566 |
|
|
567 |
|
return $regexpes; |
568 |
|
} |
569 |
|
|
570 |
=head1 MEMORY USAGE |
=head1 MEMORY USAGE |
571 |
|
|