11 my $term = new Term::ReadLine 'yaz-cleanup';
12 my $OUT = $term->OUT || \*STDOUT;
20 my %trash = (); # hash for tags to be dumped
22 # initialization and setup
25 # read in trash tags file if it exists
26 populate_trash() if (-e '.trashtags');
28 my @record = (); # current record storage
29 my %recmeta = (); # metadata about current record
30 my @context= (); # last 5 lines of file
32 my $input = shift || 'incoming.marc.xml';
34 open MARC, '<', $input;
35 open my $NUMARC, '>', $conf->{output};
36 print $NUMARC '<?xml version="1.0" encoding="UTF-8"?>',"\n";
37 print $NUMARC '<collection xmlns="http://www.loc.gov/MARC21/slim">',"\n";
39 open my $EXMARC, '>', $conf->{exception};
40 print $EXMARC '<?xml version="1.0" encoding="UTF-8"?>',"\n";
41 print $EXMARC '<collection xmlns="http://www.loc.gov/MARC21/slim">',"\n";
42 open MARC2, '<', $input;
45 # this is the dispatch table which drives command selection in
47 my %commands = ( c => \&print_context,
48 C => \&print_linecontext,
61 my @spinner = qw(- / | \\);
64 while (my $line = getline()) {
65 unless ($count % 2000) {
66 print "\rWorking... ", $spinner[$sidx];
67 $sidx = ($sidx == $#spinner) ? 0 : $sidx + 1;
71 next if ($line =~ m|</record>|);
73 # catch empty datafield elements
74 if ($line =~ m|</datafield>|) {
75 if ($record[-2] =~ m/<datafield tag="..." ind1="." ind2=".">/) {
76 pop @record; pop @record;
77 message("Empty datafield scrubbed");
83 if ($line =~ m|<leader>(.+?)</leader>|) {
85 if (length $leader < 24) {
86 $leader .= ' ' x (20 - length($leader));
88 $line = "<leader>$leader</leader>\n";
89 message("Short leader padded");
93 # clean misplaced dollarsigns
94 if ($line =~ m|<subfield code="\$">c?\d+\.\d{2}|) {
95 $line =~ s|"\$">c?(\d+\.\d{2})|"c">\$$1|;
96 message("Dollar sign corrected");
99 # clean up tags with spaces in them
100 $line =~ s/tag=" /tag="00/g;
101 $line =~ s/tag=" /tag="0/g;
102 $line =~ s/tag="-/tag="0/g;
103 $line =~ s/tag="(\d\d) /tag="0$1/g;
105 # stow tag data if we're looking at it
106 if ($line =~ m/<datafield tag="(.{3})" ind1="(.)" ind2="(.)">/) {
112 # and stow line back in record
116 if ($line =~ /&/ && $line !~ /&\w+?;/)
117 { edit("Naked ampersand", $line); next }
119 # tags must be numeric
120 if ($line =~ /<datafield tag="(.+?)"/) {
122 if ($match =~ /\D/) {
123 edit("Non-numerics in tag", $line);
128 # subfields can't be non-alphanumeric
129 if ($line =~ /<subfield code="(.+?)"/) {
131 if ($match =~ /\P{IsAlnum}/) {
132 edit("Junk in subfield code", $line);
138 print $NUMARC "</collection>\n";
139 print $EXMARC "</collection>\n";
140 print $OUT "\nDone. \n";
144 Handles the Term::ReadLine loop
149 my ($msg, $line_in) = @_;
150 return if $trash{$recmeta{tag}};
155 my $line = $term->readline('marc-cleanup>');
156 my @chunks = split /\s+/, $line;
158 if (length $chunks[0] == 1)
159 { next unless (defined $commands{$chunks[0]}) }
161 if (defined $commands{$chunks[0]}) {
162 my $term = $commands{$chunks[0]}->($line_in, @chunks[1..$#chunks]);
165 if ($context[3] eq " [LINE KILLED]\n") {
166 push @record, "$line\n"
168 $record[-1] = "$line\n";
170 $context[3] = "$line\n";
178 Reads from the incoming MARC file; returns lines into the driver
179 loop. Batches records for output, and maintains the context listing.
187 if ($l =~ /<record>/) {
191 } elsif ($l =~ m|</record>|) {
192 write_record($NUMARC) if $reccount;
202 $oreccount++ if ($FH eq $NUMARC);
203 print $FH '<!-- ', $recmeta{explanation}, " -->\n"
204 if(defined $recmeta{explanation});
206 # LOOP OVER %trash TO EXCISE UNWANTED TAGS1
210 for my $line (@record) {
212 $istrash = 0 if $line =~ m|</datafield|;
215 if ($line =~ m/<datafield tag="(.{3})"/) {
217 if ($trash{$tag} or ($conf->{autoscrub} and $tag =~ /\D/) {
222 push @trimmed, $line;
227 # add 903(?) with new record id
228 if ($conf->{'renumber-from'}) {
229 print $FH '<datafield tag="', $conf->{'renumber-tag'}, '"><subfield code="a">',
230 $conf->{'renumber-from'}, '</subfield></datafield>';
231 print $FH "\n" unless $conf->{oneperline};
232 $conf->{'renumber-from'}++;
236 print $FH '</record>\n';
239 sub update_linecontext {
241 push @context, $line2;
242 shift @context if (@context > 5);
247 print $OUT "\r$msg at record $reccount/",$oreccount + 1,"\n";
251 #-----------------------------------------------------------------------------------
253 #-----------------------------------------------------------------------------------
256 my ($line_in, @chunks) = @_;
257 my $ofrom = shift @chunks;
258 if ($ofrom =~ /^'/ or !@chunks) {
259 until ($ofrom =~ /'$/)
260 { $ofrom .= join(' ','',shift @chunks) }
261 $ofrom =~ s/^'//; $ofrom =~ s/'$//;
263 my $to = shift @chunks;
265 until ($to =~ /'$/ or !@chunks)
266 { $to .= join(' ','',shift @chunks) }
267 $to =~ s/^'//; $to =~ s/'$//;
271 for my $char (split(//,$ofrom)) {
272 $char = "\\" . $char if ($char =~ /\W/);
273 $from = join('', $from, $char);
275 $record[-1] =~ s/$from/$to/;
276 $context[3] = $record[-1];
282 my $last = pop @record;
284 $record[-1] =~ s/\n//;
285 $record[-1] = join('', $record[-1], $last);
287 push @temp, @context[0..1];
288 $temp[3] = $record[-1];
289 $temp[4] = $context[4];
297 $context[3] = " [LINE KILLED]\n";
303 my ($line_in, @explanation) = @_;
304 $recmeta{explanation} = join(' ', 'Tag', $recmeta{tag}, @explanation);
305 my $line = <MARC>; $count++;
306 update_linecontext();
307 until ($line =~ m|</record>|) {
309 $line = <MARC>; $count++;
310 update_linecontext();
313 write_record($EXMARC);
317 sub commit_edit { return 1 }
320 print "\n Tag:",$recmeta{tag}, " Ind1:'",
321 $recmeta{ind1},"' Ind2:'", $recmeta{ind2}, "'";
326 sub print_linecontext {
327 print $OUT "\n", join(' |','',@context[0..2]);
328 print $OUT '==> |', $context[3];
329 print $OUT ' |', $context[4],"\n";
335 print $OUT "\n$line_in\n";
342 Type a replacement for the indicated line, or enter a command.
344 Commands: c Show record context ('C' for brief context)
345 k Kill indicated line (remove from record)
346 m Merge indicated line with previous line
348 s Substitute ARG1 for ARG2 in indicated line
349 t Commit changes and resume stream edit
350 x Write this record to the exception file instead of output
359 #-----------------------------------------------------------------------------------
361 #-----------------------------------------------------------------------------------
362 # defined a domain-specific language for specifying MARC tags to be dropped from
363 # records during processing. it is line oriented, and is specified as follows:
365 # each line may specify any number of tags to be included, either singly (\d{1,3})
366 # or as a range (\d{1,3}\.\.\d{1,3}
368 # if a single number is given, it must be between '000' and '999', inclusive.
370 # ranges obey the previous rule, and also the first number of the range must be less
371 # than the second number
373 # finally, any single range in a line may be followed by the keyword 'except'. every
374 # number or range after 'except' is excluded from the range specified. all these
375 # numbers must actually be within the range.
377 # specifying a tag twice is an error, to help prevent typos
380 print $OUT ">>> TRASHTAGS FILE FOUND. LOADING TAGS TO BE STRIPPED FROM OUTPUT...\n";
381 open TRASH, '<', '.trashtags';
383 my $lastwasrange = 0;
384 my %lastrange = ( high => 0, low => 0);
387 my @chunks = split /\s+/;
388 while (my $chunk = shift @chunks) {
391 if ($chunk =~ /^\d{1,3}$/) {
392 trash_add($chunk, $except);
398 if ($chunk =~ /^\d{1,3}\.\.\d{1,3}$/) {
399 my ($low, $high) = trash_add_range($chunk, $except, \%lastrange);
401 %lastrange = (low => $low, high => $high)
407 if ($chunk eq 'except') {
408 die "Keyword 'except' can only follow a range (line $.)\n"
409 unless $lastwasrange;
410 die "Keyword 'except' may only occur once per line (line $.)\n"
416 die "Unknown chunk $chunk in .trashtags file (line $.)\n";
420 # remove original id sequence tag from trash hash if we know it
421 $trash_add($conf->{'original-tag'}, 1)
422 if ($conf->{'original-tag'} and $trash{$conf->{'original-tag'}});
425 sub trash_add_range {
426 my ($chunk, $except, $range) = @_;
427 my ($low,$high) = split /\.\./, $chunk;
428 die "Ranges must be 'low..high' ($low is greater than $high on line $.)\n"
431 die "Exception ranges must be within last addition range (line $.)\n"
432 if ($low < $range->{low} or $high > $range->{high});
434 for my $tag ($low..$high) {
435 trash_add($tag, $except)
441 my ($tag, $except) = @_;
442 die "Trash values must be valid tags (000-999)\n"
443 unless ($tag >= 0 and $tag <= 999);
447 die "Trash tag '$tag' specified twice (line $.)\n"
453 #-----------------------------------------------------------------------
457 Performs boring script initialization. Handles argument parsing,
466 # set mode on existing filehandles
467 binmode(STDIN, ':utf8');
469 my $rc = GetOptions( $c,
474 'renumber-from|rf=i',
479 show_help() unless $rc;
480 show_help() if ($c->{help});
483 $c->{output} = 'incoming.cleaned.marc.xml' unless defined $c->{output};
484 $c->{exception} = 'incoming.exception.marc.xml' unless defined $c->{exception};
485 $c->{'renumber-tag'} = 903 unless defined $c->{exception};
487 my @keys = keys %{$c};
488 show_help() unless (@ARGV and @keys);
489 #for my $key ('runtype', 'tag', 'subfield', 'output', 'exception')
490 # { push @missing, $key unless $c->{$key} }
492 # print "Required option: ", join(', ', @missing), " missing!\n";