--- trunk/lib/WebPAC/Input.pm 2006/08/01 13:59:47 606 +++ trunk/lib/WebPAC/Input.pm 2006/09/29 19:52:17 726 @@ -7,8 +7,8 @@ use WebPAC::Common; use base qw/WebPAC::Common/; -use Text::Iconv; use Data::Dumper; +use Encode qw/from_to/; =head1 NAME @@ -16,11 +16,11 @@ =head1 VERSION -Version 0.09 +Version 0.13 =cut -our $VERSION = '0.09'; +our $VERSION = '0.13'; =head1 SYNOPSIS @@ -98,28 +98,16 @@ $log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup}); $log->logconfess("specify low-level file format module") unless ($self->{module}); - my $module = $self->{module}; - $module =~ s#::#/#g; - $module .= '.pm'; - $log->debug("require low-level module $self->{module} from $module"); + my $module_path = $self->{module}; + $module_path =~ s#::#/#g; + $module_path .= '.pm'; + $log->debug("require low-level module $self->{module} from $module_path"); - require $module; - #eval $self->{module} .'->import'; + require $module_path; # check if required subclasses are implemented - foreach my $subclass (qw/open_db fetch_rec init/) { - my $n = $self->{module} . '::' . $subclass; - if (! defined &{ $n }) { - my $missing = "missing $subclass in $self->{module}"; - $self->{$subclass} = sub { $log->logwarn($missing) }; - } else { - $self->{$subclass} = \&{ $n }; - } - } - - if ($self->{init}) { - $log->debug("calling init"); - $self->{init}->($self, @_); + foreach my $subclass (qw/open_db fetch_rec init dump_rec/) { + # FIXME } $self->{'encoding'} ||= 'ISO-8859-2'; @@ -159,22 +147,22 @@ $input->open( path => '/path/to/database/file', - code_page => '852', + code_page => 'cp852', limit => 500, offset => 6000, - lookup => $lookup_obj, stats => 1, - lookup_ref => sub { - my ($k,$v) = @_; - # store lookup $k => $v + lookup_coderef => sub { + my $rec = shift; + # store lookups }, modify_records => { 900 => { '^a' => { ' : ' => '^b' } }, 901 => { '*' => { '^b' => ' ; ' } }, }, + modify_file => 'conf/modify/mapping.map', ); -By default, C is assumed to be C<852>. +By default, C is assumed to be C. C is optional parametar to position at some offset before reading from database. @@ -182,13 +170,16 @@ C create optional report about usage of fields and subfields -C is closure to call when adding C<< key => 'value' >> combinations to -lookup. +C is closure to called to save data into lookups C specify mapping from subfields to delimiters or from delimiters to subfields, as well as oprations on fields (if subfield is defined as C<*>. +C is alternative for C above which preserves order and offers +(hopefully) simplier sintax than YAML or perl (see L). This option +overrides C if both exists for same input. + Returns size of database, regardless of C and C parametars, see also C. @@ -204,8 +195,10 @@ $log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); + $log->debug( $arg->{lookup_coderef} ? '' : 'not ', "using lookup_coderef"); + $log->logcroak("need path") if (! $arg->{'path'}); - my $code_page = $arg->{'code_page'} || '852'; + my $code_page = $arg->{'code_page'} || 'cp852'; # store data in object $self->{'input_code_page'} = $code_page; @@ -213,9 +206,6 @@ $self->{$v} = $arg->{$v} if ($arg->{$v}); } - # create Text::Iconv object - $self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! - my $filter_ref; my $recode_regex; my $recode_map; @@ -238,46 +228,37 @@ } - my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} }); - $log->debug("rec_regex: ", Dumper($rec_regex)); - - my ($db, $size) = $self->{open_db}->( $self, - path => $arg->{path}, - filter => sub { - my ($l,$f_nr) = @_; - return unless defined($l); - - ## FIXME remove iconv! - $l = $self->{iconv}->convert($l) if ($self->{iconv}); - - $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); - - ## FIXME remove this warning when we are sure that none of API is calling - ## this wrongly - #warn "filter called without field number" unless ($f_nr); + my $rec_regex; + if (my $p = $arg->{modify_file}) { + $log->debug("using modify_file $p"); + $rec_regex = $self->modify_file_regexps( $p ); + } elsif (my $h = $arg->{modify_records}) { + $log->debug("using modify_records ", Dumper( $h )); + $rec_regex = $self->modify_record_regexps(%{ $h }); + } + $log->debug("rec_regex: ", Dumper($rec_regex)) if ($rec_regex); - return $l unless ($rec_regex && $f_nr); + my $class = $self->{module} || $log->logconfess("can't get low-level module name!"); - # apply regexps - if ($rec_regex && defined($rec_regex->{$f_nr})) { - $log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); - my $c = 0; - foreach my $r (@{ $rec_regex->{$f_nr} }) { - while ( eval '$l =~ ' . $r ) { $c++ }; - } - warn "## field $f_nr triggered $c regexpes\n" if ($c && $self->{debug}); - } - - return $l; - }, + my $ll_db = $class->new( + path => $arg->{path}, +# filter => sub { +# my ($l,$f_nr) = @_; +# return unless defined($l); +# from_to($l, $code_page, $self->{'encoding'}); +# $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); +# return $l; +# }, %{ $arg }, ); - unless (defined($db)) { + unless (defined($ll_db)) { $log->logwarn("can't open database $arg->{path}, skipping..."); return; } + my $size = $ll_db->size; + unless ($size) { $log->logwarn("no records in database $arg->{path}, skipping..."); return; @@ -309,7 +290,34 @@ $log->debug("position: $pos\n"); - my $rec = $self->{fetch_rec}->($self, $db, $pos ); + my $rec = $ll_db->fetch_rec($pos, sub { + my ($l,$f_nr) = @_; +# return unless defined($l); +# return $l unless ($rec_regex && $f_nr); + + $log->debug("-=> $f_nr ## $l"); + + # codepage conversion and recode_regex + from_to($l, $code_page, $self->{'encoding'}); + $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); + + # apply regexps + if ($rec_regex && defined($rec_regex->{$f_nr})) { + $log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); + my $c = 0; + foreach my $r (@{ $rec_regex->{$f_nr} }) { + my $old_l = $l; + eval '$l =~ ' . $r; + if ($old_l ne $l) { + $log->debug("REGEX on $f_nr eval \$l =~ $r\n## old l: [$old_l]\n## new l: [$l]"); + } + $log->error("error applying regex: $r") if ($@); + } + } + + $log->debug("<=- $f_nr ## $l"); + return $l; + }); $log->debug(sub { Dumper($rec) }); @@ -331,6 +339,9 @@ # update counters for statistics if ($self->{stats}) { + # fetch clean record with regexpes applied for statistics + my $rec = $ll_db->fetch_rec($pos); + foreach my $fld (keys %{ $rec }) { $self->{_stats}->{fld}->{ $fld }++; @@ -342,6 +353,7 @@ if (ref($row) eq 'HASH') { foreach my $sf (keys %{ $row }) { + next if ($sf eq 'subfields'); $self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++; $self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++ if (ref($row->{$sf}) eq 'ARRAY'); @@ -526,9 +538,22 @@ return $out; } +=head2 dump + +Display humanly readable dump of record + +=cut + +sub dump { + my $self = shift; + + return $self->{dump_rec}->($self, $self->{pos}); + +} + =head2 modify_record_regexps -Generate hash with regexpes to be applied using L. +Generate hash with regexpes to be applied using l. my $regexpes = $input->modify_record_regexps( 900 => { '^a' => { ' : ' => '^b' } }, @@ -537,37 +562,103 @@ =cut +sub _get_regex { + my ($sf,$from,$to) = @_; + if ($sf =~ /^\^/) { + return + 's/\Q'. $sf .'\E([^\^]*?)\Q'. $from .'\E([^\^]*?)/'. $sf .'$1'. $to .'$2/'; + } else { + return + 's/\Q'. $from .'\E/'. $to .'/g'; + } +} + sub modify_record_regexps { my $self = shift; my $modify_record = {@_}; my $regexpes; + my $log = $self->_get_logger(); + foreach my $f (keys %$modify_record) { -warn "--- f: $f\n"; + $log->debug("field: $f"); + foreach my $sf (keys %{ $modify_record->{$f} }) { -warn "---- sf: $sf\n"; + $log->debug("subfield: $sf"); + foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { my $to = $modify_record->{$f}->{$sf}->{$from}; #die "no field?" unless defined($to); -warn "----- transform: |$from| -> |$to|\n"; - - if ($sf =~ /^\^/) { - my $regex = - 's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g'; - push @{ $regexpes->{$f} }, $regex; -warn ">>>>> $regex [sf]\n"; - } else { - my $regex = - 's/\Q'. $from .'\E/'. $to .'/g'; - push @{ $regexpes->{$f} }, $regex; -warn ">>>>> $regex [global]\n"; - } + $log->debug("transform: |$from| -> |$to|"); + my $regex = _get_regex($sf,$from,$to); + push @{ $regexpes->{$f} }, $regex; + $log->debug("regex: $regex"); } } } + return $regexpes; +} + +=head2 modify_file_regexps + +Generate hash with regexpes to be applied using l from +pseudo hash/yaml format for regex mappings. + +It should be obvious: + + 200 + '^a' + ' : ' => '^e' + ' = ' => '^d' + +In field I<200> find C<'^a'> and then C<' : '>, and replace it with C<'^e'>. +In field I<200> find C<'^a'> and then C<' = '>, and replace it with C<'^d'>. + + my $regexpes = $input->modify_file_regexps( 'conf/modify/common.pl' ); + +On undef path it will just return. + +=cut + +sub modify_file_regexps { + my $self = shift; + + my $modify_path = shift || return; + + my $log = $self->_get_logger(); + + my $regexpes; + + CORE::open(my $fh, $modify_path) || $log->logdie("can't open modify file $modify_path: $!"); + + my ($f,$sf); + + while(<$fh>) { + chomp; + next if (/^#/ || /^\s*$/); + + if (/^\s*(\d+)\s*$/) { + $f = $1; + $log->debug("field: $f"); + next; + } elsif (/^\s*'([^']*)'\s*$/) { + $sf = $1; + $log->die("can't define subfiled before field in: $_") unless ($f); + $log->debug("subfield: $sf"); + } elsif (/^\s*'([^']*)'\s*=>\s*'([^']*)'\s*$/) { + my ($from,$to) = ($1, $2); + + $log->debug("transform: |$from| -> |$to|"); + + my $regex = _get_regex($sf,$from,$to); + push @{ $regexpes->{$f} }, $regex; + $log->debug("regex: $regex"); + } + } + return $regexpes; }