kivitendo/SL/Helper/Csv.pm @ c6043e02
| 2f6ebd89 | Sven Schöling | package SL::Helper::Csv;
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use strict;
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use warnings;
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| 5c4833d7 | Sven Schöling | use version 0.77;
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| 2f6ebd89 | Sven Schöling | use Carp;
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use IO::File;
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use Params::Validate qw(:all);
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| 7ec8b55e | Bernd Bleßmann | use List::MoreUtils qw(all pairwise);
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| dcd6ce29 | Moritz Bunkus | use Text::CSV_XS;
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| 2f6ebd89 | Sven Schöling | use Rose::Object::MakeMethods::Generic scalar => [ qw(
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| c8473408 | Bernd Bleßmann | file encoding sep_char quote_char escape_char header profile
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| af205393 | Bernd Bleßmann | numberformat dateformat ignore_unknown_columns strict_profile is_multiplexed
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| 7ec8b55e | Bernd Bleßmann | _row_header _io _csv _objects _parsed _data _errors all_cvar_configs case_insensitive_header
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| 2f6ebd89 | Sven Schöling | ) ];
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| 17d58914 | Sven Schöling | use SL::Helper::Csv::Dispatcher;
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| c46898c7 | Sven Schöling | use SL::Helper::Csv::Error;
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| 2f6ebd89 | Sven Schöling | |||
# public interface
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sub new {
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my $class = shift;
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my %params = validate(@_, {
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| 1dcc096b | Sven Schöling | sep_char => { default => ';' },
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quote_char => { default => '"' },
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escape_char => { default => '"' },
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header => { type => ARRAYREF, optional => 1 },
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| af205393 | Bernd Bleßmann | profile => { type => ARRAYREF, optional => 1 },
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| 1dcc096b | Sven Schöling | file => 1,
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encoding => 0,
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numberformat => 0,
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dateformat => 0,
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ignore_unknown_columns => 0,
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| 09294068 | Sven Schöling | strict_profile => 0,
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| a54fc392 | Sven Schöling | case_insensitive_header => 0,
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| 2f6ebd89 | Sven Schöling | });
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my $self = bless {}, $class;
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$self->$_($params{$_}) for keys %params;
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$self->_io(IO::File->new);
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| dcd6ce29 | Moritz Bunkus | $self->_csv(Text::CSV_XS->new({
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| 2f6ebd89 | Sven Schöling | binary => 1,
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| 8fba112b | Sven Schöling | sep_char => $self->sep_char,
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quote_char => $self->quote_char,
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escape_char => $self->escape_char,
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| 2f6ebd89 | Sven Schöling | |||
}));
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| 8fba112b | Sven Schöling | $self->_errors([]);
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| 2f6ebd89 | Sven Schöling | |||
return $self;
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}
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sub parse {
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my ($self, %params) = @_;
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$self->_open_file;
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| af205393 | Bernd Bleßmann | return if ! $self->_check_multiplexed;
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| 1dcc096b | Sven Schöling | return if ! $self->_check_header;
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| 17d58914 | Sven Schöling | return if ! $self->dispatcher->parse_profile;
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| 1dcc096b | Sven Schöling | return if ! $self->_parse_data;
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| 2f6ebd89 | Sven Schöling | |||
$self->_parsed(1);
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return $self;
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}
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sub get_data {
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$_[0]->_data;
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}
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sub get_objects {
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my ($self, %params) = @_;
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croak 'must parse first' unless $self->_parsed;
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$self->_make_objects unless $self->_objects;
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return wantarray ? @{ $self->_objects } : $self->_objects;
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}
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| 8fba112b | Sven Schöling | sub errors {
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@{ $_[0]->_errors }
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}
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| f9f7b56e | Sven Schöling | sub check_header {
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$_[0]->_check_header;
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}
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| 2f6ebd89 | Sven Schöling | # private stuff
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sub _open_file {
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my ($self, %params) = @_;
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$self->encoding($self->_guess_encoding) if !$self->encoding;
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$self->_io->open($self->file, '<' . $self->_encode_layer)
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or die "could not open file " . $self->file;
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return $self->_io;
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}
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| af205393 | Bernd Bleßmann | # check, if data is multiplexed and if all nessesary infos are given
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sub _check_multiplexed {
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my ($self, %params) = @_;
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$self->is_multiplexed(0);
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# If more than one profile is given, it is multiplexed.
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if ($self->profile) {
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my @profile = @{ $self->profile };
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if (scalar @profile > 1) {
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# Each profile needs a class and a row_ident
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| 202844a1 | Bernd Bleßmann | my $info_ok = all { defined $_->{class} && defined $_->{row_ident} } @profile;
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| a6372bfa | Bernd Bleßmann | $self->_push_error([
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0,
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"missing class or row_ident in one of the profiles for multiplexed data",
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0,
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0]) unless $info_ok;
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| af205393 | Bernd Bleßmann | |||
# If header is given, there need to be a header for each profile
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| 202844a1 | Bernd Bleßmann | # and no empty headers.
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| af205393 | Bernd Bleßmann | if ($info_ok && $self->header) {
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my @header = @{ $self->header };
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| a6372bfa | Bernd Bleßmann | my $t_ok = scalar @profile == scalar @header;
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$self->_push_error([
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0,
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"number of headers and number of profiles must be the same for multiplexed data",
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0,
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0]) unless $t_ok;
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$info_ok = $info_ok && $t_ok;
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$t_ok = all { scalar @$_ > 0} @header;
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$self->_push_error([
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0,
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"no empty headers are allowed for multiplexed data",
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0,
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0]) unless $t_ok;
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$info_ok = $info_ok && $t_ok;
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| af205393 | Bernd Bleßmann | }
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$self->is_multiplexed($info_ok);
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return $info_ok;
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}
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}
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# ok, if not multiplexed
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return 1;
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}
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| 2f6ebd89 | Sven Schöling | sub _check_header {
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my ($self, %params) = @_;
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| af205393 | Bernd Bleßmann | my $header;
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| 2f6ebd89 | Sven Schöling | |||
| af205393 | Bernd Bleßmann | $header = $self->header;
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if (!$header) {
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my $n_header = ($self->is_multiplexed)? scalar @{ $self->profile } : 1;
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foreach my $p_num (0..$n_header - 1) {
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my $h = $self->_csv->getline($self->_io);
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| 2f6ebd89 | Sven Schöling | |||
| af205393 | Bernd Bleßmann | $self->_push_error([
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$self->_csv->error_input,
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$self->_csv->error_diag,
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0,
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]) unless $h;
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| e95294b5 | Bernd Bleßmann | if ($self->is_multiplexed) {
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push @{ $header }, $h;
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} else {
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$header = $h;
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}
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| af205393 | Bernd Bleßmann | }
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| 7d9888e3 | Sven Schöling | }
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| 62add698 | Sven Schöling | |||
| 07a38b9f | Sven Schöling | # Special case: utf8 BOM.
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# certain software (namely MS Office and notepad.exe insist on prefixing
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# data with a discouraged but valid byte order mark
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# if not removed, the first header field will not be recognized
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| af205393 | Bernd Bleßmann | if ($header) {
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| e95294b5 | Bernd Bleßmann | my $h = ($self->is_multiplexed)? $header->[0] : $header;
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| 202844a1 | Bernd Bleßmann | if ($h && $h->[0] && $self->encoding =~ /utf-?8/i) {
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$h->[0] =~ s/^\x{FEFF}//;
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| af205393 | Bernd Bleßmann | }
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| 07a38b9f | Sven Schöling | }
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| af205393 | Bernd Bleßmann | # check, if all header fields are parsed well
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| e95294b5 | Bernd Bleßmann | if ($self->is_multiplexed) {
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return unless $header && all { $_ } @$header;
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} else {
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return unless $header;
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}
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| a54fc392 | Sven Schöling | |||
# Special case: human stupidity
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# people insist that case sensitivity doesn't exist and try to enter all
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# sorts of stuff. at this point we've got a profile (with keys that represent
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# valid methods), and a header full of strings. if two of them match, the user
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# mopst likely meant that field, so rewrite the header
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if ($self->case_insensitive_header) {
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die 'case_insensitive_header is only possible with profile' unless $self->profile;
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| de4b1e97 | Bernd Bleßmann | if ($header) {
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| e95294b5 | Bernd Bleßmann | my $h_aref = ($self->is_multiplexed)? $header : [ $header ];
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my $p_num = 0;
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foreach my $h (@{ $h_aref }) {
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| de4b1e97 | Bernd Bleßmann | my @names = (
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keys %{ $self->profile->[$p_num]->{profile} || {} },
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);
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for my $name (@names) {
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for my $i (0..$#$h) {
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$h->[$i] = $name if lc $h->[$i] eq lc $name;
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}
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}
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$p_num++;
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| a54fc392 | Sven Schöling | }
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}
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}
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return $self->header($header);
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| 2f6ebd89 | Sven Schöling | }
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sub _parse_data {
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my ($self, %params) = @_;
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| 8fba112b | Sven Schöling | my (@data, @errors);
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| 2f6ebd89 | Sven Schöling | |||
| 8fba112b | Sven Schöling | while (1) {
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my $row = $self->_csv->getline($self->_io);
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if ($row) {
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| af205393 | Bernd Bleßmann | my $header = $self->_header_by_row($row);
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| 8fba112b | Sven Schöling | my %hr;
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| af205393 | Bernd Bleßmann | @hr{@{ $header }} = @$row;
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| 8fba112b | Sven Schöling | push @data, \%hr;
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} else {
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| 61a56da0 | Sven Schöling | last if $self->_csv->eof;
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| 5c4833d7 | Sven Schöling | # Text::CSV_XS 0.89 added record number to error_diag
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if (qv(Text::CSV_XS->VERSION) >= qv('0.89')) {
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push @errors, [
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$self->_csv->error_input,
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$self->_csv->error_diag,
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];
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} else {
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push @errors, [
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$self->_csv->error_input,
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$self->_csv->error_diag,
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$self->_io->input_line_number,
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];
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}
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| 8fba112b | Sven Schöling | }
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| 61a56da0 | Sven Schöling | last if $self->_csv->eof;
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| 8fba112b | Sven Schöling | }
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| 2f6ebd89 | Sven Schöling | |||
$self->_data(\@data);
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| f9f7b56e | Sven Schöling | $self->_push_error(@errors);
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| 8fba112b | Sven Schöling | |||
| f9f7b56e | Sven Schöling | return ! @errors;
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| 2f6ebd89 | Sven Schöling | }
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| af205393 | Bernd Bleßmann | sub _header_by_row {
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my ($self, $row) = @_;
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| 7ec8b55e | Bernd Bleßmann | # initialize lookup hash if not already done
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if ($self->is_multiplexed && ! defined $self->_row_header ) {
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| d161c66c | Bernd Bleßmann | $self->_row_header({ pairwise { no warnings 'once'; $a->{row_ident} => $b } @{ $self->profile }, @{ $self->header } });
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| 7ec8b55e | Bernd Bleßmann | }
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| 1870f11e | Bernd Bleßmann | |||
| af205393 | Bernd Bleßmann | if ($self->is_multiplexed) {
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| 7ec8b55e | Bernd Bleßmann | return $self->_row_header->{$row->[0]}
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| af205393 | Bernd Bleßmann | } else {
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| e95294b5 | Bernd Bleßmann | return $self->header;
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| af205393 | Bernd Bleßmann | }
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}
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| 2f6ebd89 | Sven Schöling | sub _encode_layer {
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':encoding(' . $_[0]->encoding . ')';
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}
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sub _make_objects {
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||||
my ($self, %params) = @_;
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my @objs;
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local $::myconfig{numberformat} = $self->numberformat if $self->numberformat;
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local $::myconfig{dateformat} = $self->dateformat if $self->dateformat;
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for my $line (@{ $self->_data }) {
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| c8473408 | Bernd Bleßmann | my $tmp_obj = $self->dispatcher->dispatch($line);
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| 17d58914 | Sven Schöling | push @objs, $tmp_obj;
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| 2f6ebd89 | Sven Schöling | }
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$self->_objects(\@objs);
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}
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| 17d58914 | Sven Schöling | sub dispatcher {
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my ($self, %params) = @_;
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||||
$self->{_dispatcher} ||= $self->_make_dispatcher;
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||||
}
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||||
sub _make_dispatcher {
|
||||
my ($self, %params) = @_;
|
||||
die 'need a header to make a dispatcher' unless $self->header;
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||||
return SL::Helper::Csv::Dispatcher->new($self);
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||||
| f9f7b56e | Sven Schöling | }
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||
| 2f6ebd89 | Sven Schöling | sub _guess_encoding {
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||
# won't fix
|
||||
'utf-8';
|
||||
}
|
||||
| f9f7b56e | Sven Schöling | sub _push_error {
|
||
my ($self, @errors) = @_;
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||||
| c46898c7 | Sven Schöling | my @new_errors = ($self->errors, map { SL::Helper::Csv::Error->new(@$_) } @errors);
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| f9f7b56e | Sven Schöling | $self->_errors(\@new_errors);
|
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}
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| 2f6ebd89 | Sven Schöling | |||
1;
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||||
__END__
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| 8fba112b | Sven Schöling | =encoding utf-8
|
||
| 2f6ebd89 | Sven Schöling | =head1 NAME
|
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SL::Helper::Csv - take care of csv file uploads
|
||||
=head1 SYNOPSIS
|
||||
use SL::Helper::Csv;
|
||||
my $csv = SL::Helper::Csv->new(
|
||||
file => \$::form->{upload_file},
|
||||
encoding => 'utf-8', # undef means utf8
|
||||
sep_char => ',', # default ';'
|
||||
| efb48636 | Moritz Bunkus | quote_char => '\'', # default '"'
|
||
escape_char => '"', # default '"'
|
||||
| e95294b5 | Bernd Bleßmann | header => [ qw(id text sellprice word) ], # see later
|
||
| af205393 | Bernd Bleßmann | profile => [ { profile => { sellprice => 'sellprice_as_number'},
|
||
class => 'SL::DB::Part' } ],
|
||||
| efb48636 | Moritz Bunkus | );
|
||
| 2f6ebd89 | Sven Schöling | |||
my $status = $csv->parse;
|
||||
| 8fba112b | Sven Schöling | my $hrefs = $csv->get_data;
|
||
| bfb0d001 | Sven Schöling | my @objects = $csv->get_objects;
|
||
my @errors = $csv->errors;
|
||||
| 2f6ebd89 | Sven Schöling | |||
=head1 DESCRIPTION
|
||||
See Synopsis.
|
||||
Text::CSV offeres already good functions to get lines out of a csv file, but in
|
||||
most cases you will want those line to be parsed into hashes or even objects,
|
||||
so this model just skips ahead and gives you objects.
|
||||
| bfb0d001 | Sven Schöling | Its basic assumptions are:
|
||
=over 4
|
||||
=item You do know what you expect to be in that csv file.
|
||||
This means first and foremost you have knowledge about encoding, number and
|
||||
date format, csv parameters such as quoting and separation characters. You also
|
||||
know what content will be in that csv and what L<Rose::DB> is responsible for
|
||||
it. You provide valid header columns and their mapping to the objects.
|
||||
=item You do NOT know if the csv provider yields to your expectations.
|
||||
Stuff that does not work with what you expect should not crash anything, but
|
||||
| 46e31af5 | Bernd Bleßmann | give you a hint what went wrong. As a result, if you remember to check for
|
||
| bfb0d001 | Sven Schöling | errors after each step, you should be fine.
|
||
=item Data does not make sense. It's just data.
|
||||
Almost all data imports have some type of constraints. Some data needs to be
|
||||
unique, other data needs to be connected to existing data sets. This will not
|
||||
happen here. You will receive a plain mapping of the data into the class tree,
|
||||
nothing more.
|
||||
| af205393 | Bernd Bleßmann | =item Multiplex data
|
||
This module can handle multiplexed data of different class types. In that case
|
||||
multiple profiles with classes and row identifiers must be given. Multiple
|
||||
headers may also be given or read from csv data. Data must contain the row
|
||||
identifier in the first column and it's field name must be 'datatype'.
|
||||
| bfb0d001 | Sven Schöling | =back
|
||
| 2f6ebd89 | Sven Schöling | |||
=head1 METHODS
|
||||
=over 4
|
||||
=item C<new> PARAMS
|
||||
Standard constructor. You can use this to set most of the data.
|
||||
=item C<parse>
|
||||
Do the actual work. Will return true ($self actually) if success, undef if not.
|
||||
=item C<get_objects>
|
||||
Parse the data into objects and return those.
|
||||
| 8fba112b | Sven Schöling | This method will return list or arrayref depending on context.
|
||
| 2f6ebd89 | Sven Schöling | =item C<get_data>
|
||
Returns an arrayref of the raw lines as hashrefs.
|
||||
| 8fba112b | Sven Schöling | =item C<errors>
|
||
| bfb0d001 | Sven Schöling | Return all errors that came up during parsing. See error handling for detailed
|
||
| 8fba112b | Sven Schöling | information.
|
||
=back
|
||||
=head1 PARAMS
|
||||
=over 4
|
||||
| 2f6ebd89 | Sven Schöling | =item C<file>
|
||
The file which contents are to be read. Can be a name of a physical file or a
|
||||
scalar ref for memory data.
|
||||
=item C<encoding>
|
||||
| f9f7b56e | Sven Schöling | Encoding of the CSV file. Note that this module does not do any encoding
|
||
| efb48636 | Moritz Bunkus | guessing. Know what your data is. Defaults to utf-8.
|
||
| 2f6ebd89 | Sven Schöling | |||
=item C<sep_char>
|
||||
=item C<quote_char>
|
||||
| 8fba112b | Sven Schöling | =item C<escape_char>
|
||
| 2f6ebd89 | Sven Schöling | Same as in L<Text::CSV>
|
||
| af205393 | Bernd Bleßmann | =item C<header> \@HEADERS
|
||
| e95294b5 | Bernd Bleßmann | If given, it contains an ARRAY of the header fields for not multiplexed data.
|
||
Or an ARRAYREF for each different class type for multiplexed data. These
|
||||
ARRAYREFS are the header fields which are an array of columns. In this case
|
||||
the first lines are not used as a header. Empty header fields will be ignored
|
||||
in objects.
|
||||
| af205393 | Bernd Bleßmann | |||
If not given, headers are taken from the first n lines of data, where n is the
|
||||
number of different class types.
|
||||
| 2f6ebd89 | Sven Schöling | |||
| af205393 | Bernd Bleßmann | Examples:
|
||
| 2f6ebd89 | Sven Schöling | |||
| af205393 | Bernd Bleßmann | classic data of one type:
|
||
| e95294b5 | Bernd Bleßmann | [ 'name', 'street', 'zipcode', 'city' ]
|
||
| 2f6ebd89 | Sven Schöling | |||
| af205393 | Bernd Bleßmann | multiplexed data with two different types
|
||
[ [ 'ordernumber', 'customer', 'transdate' ], [ 'partnumber', 'qty', 'sellprice' ] ]
|
||||
=item C<profile> [{profile => \%ACCESSORS, class => class, row_ident => ri},]
|
||||
This is an ARRAYREF to HASHREFs which may contain the keys C<profile>, C<class>
|
||||
and C<row_ident>.
|
||||
| 2f6ebd89 | Sven Schöling | |||
| c8473408 | Bernd Bleßmann | The C<profile> is a HASHREF which may be used to map header fields to custom
|
||
accessors. Example:
|
||||
| af205393 | Bernd Bleßmann | [ {profile => { listprice => listprice_as_number }} ]
|
||
| 2f6ebd89 | Sven Schöling | |||
In this case C<listprice_as_number> will be used to read in values from the
|
||||
C<listprice> column.
|
||||
| 8a635325 | Sven Schöling | In case of a One-To-One relationsship these can also be set over
|
||
relationsships by sparating the steps with a dot (C<.>). This will work:
|
||||
| af205393 | Bernd Bleßmann | [ {profile => { customer => 'customer.name' }} ]
|
||
| 8a635325 | Sven Schöling | |||
And will result in something like this:
|
||||
$obj->customer($obj->meta->relationship('customer')->class->new);
|
||||
$obj->customer->name($csv_line->{customer})
|
||||
But beware, this will not try to look up anything in the database. You will
|
||||
simply receive objects that represent what the profile defined. If some of
|
||||
these information are unique, and should be connected to preexisting data, you
|
||||
will have to do that for yourself. Since you provided the profile, it is
|
||||
assumed you know what to do in this case.
|
||||
| de4b1e97 | Bernd Bleßmann | If no profile is given, any header field found will be taken as is.
|
||
If the path in a profile entry is empty, the field will be subjected to
|
||||
C<strict_profile> and C<case_insensitive_header> checking, will be parsed into
|
||||
C<get_data>, but will not be attempted to be dispatched into objects.
|
||||
| c8473408 | Bernd Bleßmann | If C<class> is present, the line will be handed to the new sub of this class,
|
||
| 2f6ebd89 | Sven Schöling | and the return value used instead of the line itself.
|
||
| af205393 | Bernd Bleßmann | C<row_ident> is a string to recognize the right profile and class for each data
|
||
line in multiplexed data.
|
||||
In case of multiplexed data, C<class> and C<row_ident> must be given.
|
||||
Example:
|
||||
[ {
|
||||
class => 'SL::DB::Order',
|
||||
row_ident => 'O'
|
||||
},
|
||||
{
|
||||
class => 'SL::DB::OrderItem',
|
||||
row_ident => 'I',
|
||||
profile => {sellprice => sellprice_as_number}
|
||||
} ]
|
||||
| 1dcc096b | Sven Schöling | =item C<ignore_unknown_columns>
|
||
If set, the import will ignore unkown header columns. Useful for lazy imports,
|
||||
but deactivated by default.
|
||||
| a54fc392 | Sven Schöling | =item C<case_insensitive_header>
|
||
If set, header columns will be matched against profile entries case
|
||||
insensitive, and on match the profile name will be taken.
|
||||
Only works if a profile is given, will die otherwise.
|
||||
If both C<case_insensitive_header> and C<strict_profile> is set, matched header
|
||||
columns will be accepted.
|
||||
| 09294068 | Sven Schöling | =item C<strict_profile>
|
||
If set, all columns to be parsed must be specified in C<profile>. Every header
|
||||
field not listed there will be treated like an unknown column.
|
||||
| a54fc392 | Sven Schöling | If both C<case_insensitive_header> and C<strict_profile> is set, matched header
|
||
columns will be accepted.
|
||||
| 2f6ebd89 | Sven Schöling | =back
|
||
| 8fba112b | Sven Schöling | =head1 ERROR HANDLING
|
||
After parsing a file all errors will be accumulated into C<errors>.
|
||||
| c46898c7 | Sven Schöling | Each entry is an object with the following attributes:
|
||
| 8fba112b | Sven Schöling | |||
| c46898c7 | Sven Schöling | raw_input: offending raw input,
|
||
code: Text::CSV error code if Text:CSV signalled an error, 0 else,
|
||||
diag: error diagnostics,
|
||||
line: position in line,
|
||||
col: estimated line in file,
|
||||
| 8fba112b | Sven Schöling | |||
Note that the last entry can be off, but will give an estimate.
|
||||
=head1 CAVEATS
|
||||
=over 4
|
||||
=item *
|
||||
sep_char, quote_char, and escape_char are passed to Text::CSV on creation.
|
||||
Changing them later has no effect currently.
|
||||
=item *
|
||||
Encoding errors are not dealt with properly.
|
||||
=back
|
||||
| 2f6ebd89 | Sven Schöling | |||
| f9f7b56e | Sven Schöling | =head1 TODO
|
||
Dispatch to child objects, like this:
|
||||
$csv = SL::Helper::Csv->new(
|
||||
| c8473408 | Bernd Bleßmann | file => ...
|
||
| af205393 | Bernd Bleßmann | profile => [ {
|
||
| c8473408 | Bernd Bleßmann | profile => [
|
||
makemodel => {
|
||||
make_1 => make,
|
||||
model_1 => model,
|
||||
},
|
||||
makemodel => {
|
||||
make_2 => make,
|
||||
model_2 => model,
|
||||
},
|
||||
],
|
||||
class => SL::DB::Part,
|
||||
| af205393 | Bernd Bleßmann | } ]
|
||
| f9f7b56e | Sven Schöling | );
|
||
| 2f6ebd89 | Sven Schöling | =head1 AUTHOR
|
||
| 8fba112b | Sven Schöling | Sven Schöling E<lt>s.schoeling@linet-services.deE<gt>
|
||
| 2f6ebd89 | Sven Schöling | =cut
|