.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is >0, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{\ . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" ======================================================================== .\" .IX Title "MARC::MIR::Tutorial 3pm" .TH MARC::MIR::Tutorial 3pm "2023-02-09" "perl v5.36.0" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" MARC::MIR::Tutorial \- Tutorial for MARC::MIR DSL .SS "the \s-1DSL\s0" .IX Subsection "the DSL" to make things more readable and less error prone, we also add a \s-1DSL.\s0 Every keywords of this \s-1DSL\s0 works the same way. \s-1FIXME :\s0 explain. .PP also, iso2709_records_of is an helper that stream the records of an \s-1ISO2709\s0 formatted file. .SS "some examples" .IX Subsection "some examples" the perfect boilerplate .PP .Vb 4 \& use autodie; \& use Modern::Perl; \& use Perlude; \& use MARC::MIR; .Ve .PP print all the ids of the records (assuming the id is in 001, the common case) .PP .Vb 1 \& now { say record_id from_iso2709 } iso2709_records_of "biblio.marc"; .Ve .PP or .PP .Vb 1 \& marawk { say $ID } "biblio.marc"; .Ve .PP remove every 9.. fields .PP .Vb 5 \& now { \& $_ = from_iso2709; \& with_fields { @$_ = grep { (tag) !~ /^9/ } @$_ }; \& print to_iso2709; \& } iso2709_records_of "biblio.marc"; .Ve .PP every 856$q must be jpeg .PP .Vb 9 \& now { \& $_ = from_iso2709; \& map_fields { \& tag eq \*(Aq856\*(Aq and map_subfields { \& (tag) eq \*(Aqz\*(Aq and with_value { $_ = \*(Aqjpeg\*(Aq } \& } \& } \& with_fields { @$_ = grep_fields { (tag) !~ /^9/ } @$_ }; \& } iso2709_records_of "biblio.marc"; .Ve .PP or .PP .Vb 1 \& marawk { map_values { $_ = \*(Aqjpeg\*(Aq } [qw< 856 z >] } "biblio.marc" .Ve .PP collect every 856$z by id .PP .Vb 3 \& use Modern::Perl; \& use YAML; \& use MARC::MIR; \& \& my %seen; \& marawk { \& map_values { push @{ $seen{$ID} }, $_ } [qw< 856 z >] \& } "data/*.RAW"; \& say YAML::Dump \e%seen; .Ve .SS "marawk" .IX Subsection "marawk" # \s-1TODO:\s0