use strict;
use warnings;
+use version 0.77;
use Carp;
use IO::File;
use Params::Validate qw(:all);
+use List::MoreUtils qw(all pairwise);
use Text::CSV_XS;
use Rose::Object::MakeMethods::Generic scalar => [ qw(
- file encoding sep_char quote_char escape_char header profile class
- numberformat dateformat ignore_unknown_columns strict_profile _io _csv
- _objects _parsed _data _errors
+ file encoding sep_char quote_char escape_char header profile
+ numberformat dateformat ignore_unknown_columns strict_profile is_multiplexed
+ _row_header _io _csv _objects _parsed _data _errors all_cvar_configs case_insensitive_header
) ];
use SL::Helper::Csv::Dispatcher;
quote_char => { default => '"' },
escape_char => { default => '"' },
header => { type => ARRAYREF, optional => 1 },
- profile => { type => HASHREF, optional => 1 },
+ profile => { type => ARRAYREF, optional => 1 },
file => 1,
encoding => 0,
- class => 0,
numberformat => 0,
dateformat => 0,
ignore_unknown_columns => 0,
strict_profile => 0,
+ case_insensitive_header => 0,
});
my $self = bless {}, $class;
my ($self, %params) = @_;
$self->_open_file;
+ return if ! $self->_check_multiplexed;
return if ! $self->_check_header;
return if ! $self->dispatcher->parse_profile;
return if ! $self->_parse_data;
sub get_objects {
my ($self, %params) = @_;
- croak 'no class given' unless $self->class;
croak 'must parse first' unless $self->_parsed;
$self->_make_objects unless $self->_objects;
return $self->_io;
}
+# check, if data is multiplexed and if all nessesary infos are given
+sub _check_multiplexed {
+ my ($self, %params) = @_;
+
+ $self->is_multiplexed(0);
+
+ # If more than one profile is given, it is multiplexed.
+ if ($self->profile) {
+ my @profile = @{ $self->profile };
+ if (scalar @profile > 1) {
+ # Each profile needs a class and a row_ident
+ my $info_ok = all { defined $_->{class} && defined $_->{row_ident} } @profile;
+ $self->_push_error([
+ 0,
+ "missing class or row_ident in one of the profiles for multiplexed data",
+ 0,
+ 0]) unless $info_ok;
+
+ # If header is given, there need to be a header for each profile
+ # and no empty headers.
+ if ($info_ok && $self->header) {
+ my @header = @{ $self->header };
+ my $t_ok = scalar @profile == scalar @header;
+ $self->_push_error([
+ 0,
+ "number of headers and number of profiles must be the same for multiplexed data",
+ 0,
+ 0]) unless $t_ok;
+ $info_ok = $info_ok && $t_ok;
+
+ $t_ok = all { scalar @$_ > 0} @header;
+ $self->_push_error([
+ 0,
+ "no empty headers are allowed for multiplexed data",
+ 0,
+ 0]) unless $t_ok;
+ $info_ok = $info_ok && $t_ok;
+ }
+ $self->is_multiplexed($info_ok);
+ return $info_ok;
+ }
+ }
+
+ # ok, if not multiplexed
+ return 1;
+}
+
sub _check_header {
my ($self, %params) = @_;
- return $self->header if $self->header;
+ my $header;
+
+ $header = $self->header;
+ if (!$header) {
+ my $n_header = ($self->is_multiplexed)? scalar @{ $self->profile } : 1;
+ foreach my $p_num (0..$n_header - 1) {
+ my $h = $self->_csv->getline($self->_io);
- my $header = $self->_csv->getline($self->_io);
+ $self->_push_error([
+ $self->_csv->error_input,
+ $self->_csv->error_diag,
+ 0,
+ ]) unless $h;
+
+ if ($self->is_multiplexed) {
+ push @{ $header }, $h;
+ } else {
+ $header = $h;
+ }
+ }
+ }
- $self->_push_error([
- $self->_csv->error_input,
- $self->_csv->error_diag,
- 0,
- ]) unless $header;
+ # Special case: utf8 BOM.
+ # certain software (namely MS Office and notepad.exe insist on prefixing
+ # data with a discouraged but valid byte order mark
+ # if not removed, the first header field will not be recognized
+ if ($header) {
+ my $h = ($self->is_multiplexed)? $header->[0] : $header;
- $self->header($header);
+ if ($h && $h->[0] && $self->encoding =~ /utf-?8/i) {
+ $h->[0] =~ s/^\x{FEFF}//;
+ }
+ }
+
+ # check, if all header fields are parsed well
+ if ($self->is_multiplexed) {
+ return unless $header && all { $_ } @$header;
+ } else {
+ return unless $header;
+ }
+
+ # Special case: human stupidity
+ # people insist that case sensitivity doesn't exist and try to enter all
+ # sorts of stuff. at this point we've got a profile (with keys that represent
+ # valid methods), and a header full of strings. if two of them match, the user
+ # mopst likely meant that field, so rewrite the header
+ if ($self->case_insensitive_header) {
+ die 'case_insensitive_header is only possible with profile' unless $self->profile;
+ if ($header) {
+ my $h_aref = ($self->is_multiplexed)? $header : [ $header ];
+ my $p_num = 0;
+ foreach my $h (@{ $h_aref }) {
+ my @names = (
+ keys %{ $self->profile->[$p_num]->{profile} || {} },
+ );
+ for my $name (@names) {
+ for my $i (0..$#$h) {
+ $h->[$i] = $name if lc $h->[$i] eq lc $name;
+ }
+ }
+ $p_num++;
+ }
+ }
+ }
+
+ return $self->header($header);
}
sub _parse_data {
my ($self, %params) = @_;
my (@data, @errors);
- $self->_csv->column_names(@{ $self->header });
-
while (1) {
my $row = $self->_csv->getline($self->_io);
- last if $self->_csv->eof;
if ($row) {
+ my $header = $self->_header_by_row($row);
my %hr;
- @hr{@{ $self->header }} = @$row;
+ @hr{@{ $header }} = @$row;
push @data, \%hr;
} else {
- push @errors, [
- $self->_csv->error_input,
- $self->_csv->error_diag,
- $self->_io->input_line_number,
- ];
+ last if $self->_csv->eof;
+ # Text::CSV_XS 0.89 added record number to error_diag
+ if (qv(Text::CSV_XS->VERSION) >= qv('0.89')) {
+ push @errors, [
+ $self->_csv->error_input,
+ $self->_csv->error_diag,
+ ];
+ } else {
+ push @errors, [
+ $self->_csv->error_input,
+ $self->_csv->error_diag,
+ $self->_io->input_line_number,
+ ];
+ }
}
+ last if $self->_csv->eof;
}
$self->_data(\@data);
return ! @errors;
}
+sub _header_by_row {
+ my ($self, $row) = @_;
+
+ # initialize lookup hash if not already done
+ if ($self->is_multiplexed && ! defined $self->_row_header ) {
+ $self->_row_header({ pairwise { no warnings 'once'; $a->{row_ident} => $b } @{ $self->profile }, @{ $self->header } });
+ }
+
+ if ($self->is_multiplexed) {
+ return $self->_row_header->{$row->[0]}
+ } else {
+ return $self->header;
+ }
+}
+
sub _encode_layer {
':encoding(' . $_[0]->encoding . ')';
}
my ($self, %params) = @_;
my @objs;
- eval "require " . $self->class;
local $::myconfig{numberformat} = $self->numberformat if $self->numberformat;
local $::myconfig{dateformat} = $self->dateformat if $self->dateformat;
for my $line (@{ $self->_data }) {
- my $tmp_obj = $self->class->new;
- $self->dispatcher->dispatch($tmp_obj, $line);
+ my $tmp_obj = $self->dispatcher->dispatch($line);
push @objs, $tmp_obj;
}
sep_char => ',', # default ';'
quote_char => '\'', # default '"'
escape_char => '"', # default '"'
- header => [qw(id text sellprice word)], # see later
- profile => { sellprice => 'sellprice_as_number' },
- class => 'SL::DB::CsvLine', # if present, map lines to this
+ header => [ qw(id text sellprice word) ], # see later
+ profile => [ { profile => { sellprice => 'sellprice_as_number'},
+ class => 'SL::DB::Part' } ],
);
my $status = $csv->parse;
=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
-give you a hint what went wrong. As a result, if you remeber to check for
+give you a hint what went wrong. As a result, if you remember to check for
errors after each step, you should be fine.
=item Data does not make sense. It's just data.
happen here. You will receive a plain mapping of the data into the class tree,
nothing more.
+=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'.
+
=back
=head1 METHODS
Same as in L<Text::CSV>
-=item C<header> \@FIELDS
+=item C<header> \@HEADERS
+
+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.
+
+If not given, headers are taken from the first n lines of data, where n is the
+number of different class types.
-Can be an array of columns, in this case the first line is not used as a
-header. Empty header fields will be ignored in objects.
+In case of multiplexed data the first column must be named 'datatype'. This
+name must be given in the header.
-=item C<profile> \%ACCESSORS
+Examples:
-May be used to map header fields to custom accessors. Example:
+ classic data of one type:
+ [ 'name', 'street', 'zipcode', 'city' ]
- { listprice => listprice_as_number }
+ multiplexed data with two different types
+ [ [ 'datatype', 'ordernumber', 'customer', 'transdate' ],
+ [ 'datatype', '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>.
+
+The C<profile> is a HASHREF which may be used to map header fields to custom
+accessors. Example:
+
+ [ {profile => { listprice => listprice_as_number }} ]
In this case C<listprice_as_number> will be used to read in values from the
C<listprice> column.
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:
- { customer => 'customer.name' }
+ [ {profile => { customer => 'customer.name' }} ]
And will result in something like this:
will have to do that for yourself. Since you provided the profile, it is
assumed you know what to do in this case.
-=item C<class>
+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.
-If present, the line will be handed to the new sub of this class,
+If C<class> is present, the line will be handed to the new sub of this class,
and the return value used instead of the line itself.
+C<row_ident> is a string to recognize the right profile and class for each data
+line in multiplexed data. It must match the value in the column 'dataype' for
+each class.
+
+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}
+ } ]
+
=item C<ignore_unknown_columns>
If set, the import will ignore unkown header columns. Useful for lazy imports,
but deactivated by default.
+=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.
+
=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.
+If both C<case_insensitive_header> and C<strict_profile> is set, matched header
+columns will be accepted.
+
=back
=head1 ERROR HANDLING
Dispatch to child objects, like this:
$csv = SL::Helper::Csv->new(
- file => ...
- class => SL::DB::Part,
- profile => [
- makemodel => {
- make_1 => make,
- model_1 => model,
- },
- makemodel => {
- make_2 => make,
- model_2 => model,
- },
- ]
+ file => ...
+ profile => [ {
+ profile => [
+ makemodel => {
+ make_1 => make,
+ model_1 => model,
+ },
+ makemodel => {
+ make_2 => make,
+ model_2 => model,
+ },
+ ],
+ class => SL::DB::Part,
+ } ]
);
=head1 AUTHOR
projects / mfinanz.git / blobdiff