Revision 17d58914
Von Sven Schöling vor mehr als 13 Jahren hinzugefügt
| SL/Helper/Csv.pm | ||
|---|---|---|
| 5 | 5 |
|
| 6 | 6 |
use Carp; |
| 7 | 7 |
use IO::File; |
| 8 |
use Text::CSV; |
|
| 9 | 8 |
use Params::Validate qw(:all); |
| 9 |
use Text::CSV; |
|
| 10 | 10 |
use Rose::Object::MakeMethods::Generic scalar => [ qw( |
| 11 | 11 |
file encoding sep_char quote_char escape_char header profile class |
| 12 | 12 |
numberformat dateformat ignore_unknown_columns _io _csv _objects _parsed |
| 13 | 13 |
_data _errors |
| 14 | 14 |
) ]; |
| 15 | 15 |
|
| 16 |
use SL::Helper::Csv::Dispatcher; |
|
| 16 | 17 |
|
| 17 | 18 |
# public interface |
| 18 | 19 |
|
| ... | ... | |
| 53 | 54 |
|
| 54 | 55 |
$self->_open_file; |
| 55 | 56 |
return if ! $self->_check_header; |
| 56 |
return if $self->class && ! $self->_check_header_for_class; |
|
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return if ! $self->dispatcher->parse_profile; |
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# return if $self->class && ! $self->_check_header_for_class; |
|
| 57 | 59 |
return if ! $self->_parse_data; |
| 58 | 60 |
|
| 59 | 61 |
$self->_parsed(1); |
| ... | ... | |
| 109 | 111 |
$self->header($header); |
| 110 | 112 |
} |
| 111 | 113 |
|
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sub _check_header_for_class {
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my ($self, %params) = @_; |
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my @errors; |
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|
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carp 'this should never be called without' unless $self->class; |
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|
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if ($self->ignore_unknown_columns) {
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my @new_header; |
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for my $method (@{ $self->header }) {
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push @new_header, $self->class->can($self->_real_method($method)) |
|
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? $method : undef; |
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} |
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$self->header(\@new_header); |
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return 1; |
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} else {
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for my $method (@{ $self->header }) {
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next if ! $method; |
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next if $self->class->can($self->_real_method($method)); |
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|
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push @errors, [ |
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$method, |
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undef, |
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"header field $method is not recognized", |
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undef, |
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0, |
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]; |
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} |
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|
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$self->_push_error(@errors); |
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return ! @errors; |
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} |
|
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} |
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|
|
| 147 | 114 |
sub _parse_data {
|
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my ($self, %params) = @_; |
| 149 | 116 |
my (@data, @errors); |
| ... | ... | |
| 153 | 120 |
while (1) {
|
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my $row = $self->_csv->getline($self->_io); |
| 155 | 122 |
last if $self->_csv->eof; |
| 156 |
|
|
| 157 | 123 |
if ($row) {
|
| 158 | 124 |
my %hr; |
| 159 | 125 |
@hr{@{ $self->header }} = @$row;
|
| ... | ... | |
| 186 | 152 |
local $::myconfig{dateformat} = $self->dateformat if $self->dateformat;
|
| 187 | 153 |
|
| 188 | 154 |
for my $line (@{ $self->_data }) {
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push @objs, $self->class->new( |
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map {
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$self->_real_method($_) => $line->{$_}
|
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} grep { $_ } keys %$line
|
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); |
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my $tmp_obj = $self->class->new; |
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$self->dispatcher->dispatch($tmp_obj, $line); |
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push @objs, $tmp_obj; |
|
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} |
| 195 | 159 |
|
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$self->_objects(\@objs); |
| 197 | 161 |
} |
| 198 | 162 |
|
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sub _real_method {
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my ($self, $arg) = @_; |
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($self->profile && $self->profile->{$arg}) || $arg;
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sub dispatcher {
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my ($self, %params) = @_; |
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$self->{_dispatcher} ||= $self->_make_dispatcher;
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} |
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|
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sub _make_dispatcher {
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my ($self, %params) = @_; |
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die 'need a header to make a dispatcher' unless $self->header; |
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|
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return SL::Helper::Csv::Dispatcher->new($self); |
|
| 202 | 175 |
} |
| 203 | 176 |
|
| 204 | 177 |
sub _guess_encoding {
|
| SL/Helper/Csv/Dispatcher.pm | ||
|---|---|---|
| 1 |
package SL::Helper::Csv::Dispatcher; |
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|
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use strict; |
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|
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use Data::Dumper; |
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use Carp; |
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use Scalar::Util qw(weaken); |
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use Rose::Object::MakeMethods::Generic scalar => [ qw( |
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_specs _errors |
|
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) ]; |
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|
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sub new {
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my ($class, $parent) = @_; |
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my $self = bless { }, $class;
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|
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weaken($self->{_csv} = $parent);
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$self->_errors([]); |
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return $self; |
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} |
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|
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sub dispatch {
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my ($self, $obj, $line) = @_; |
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|
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for my $spec (@{ $self->_specs }) {
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$self->apply($obj, $spec, $line->{$spec->{key}});
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} |
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} |
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|
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sub apply {
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my ($self, $obj, $spec, $value) = @_; |
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return unless $value; |
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|
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for my $step (@{ $spec->{steps} }) {
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my ($acc, $class) = @$step; |
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if ($class) {
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eval "require $class; 1" or die "could not load class '$class'"; |
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$obj->$acc($class->new) if ! $$obj->$acc; |
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$obj = $obj->$acc; |
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} else {
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$obj->$acc($value); |
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} |
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} |
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} |
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|
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sub is_known {
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my ($self, $col) = @_; |
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return grep { $col eq $_->{key} } $self->_specs;
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} |
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|
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sub parse_profile {
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my ($self, %params) = @_; |
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|
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my $header = $self->_csv->header; |
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my $profile = $self->_csv->profile; |
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my @specs; |
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for my $col (@$header) {
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next unless $col; |
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push @specs, $self->make_spec($col, $profile->{$col} || $col);
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} |
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|
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$self->_specs(\@specs); |
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$self->_csv->_push_error($self->errors); |
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return ! $self->errors; |
|
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} |
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|
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sub make_spec {
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my ($self, $col, $path) = @_; |
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|
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my $spec = { key => $col, steps => [] };
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my $cur_class = $self->_csv->class; |
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|
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for my $step ( split /\./, $path ) {
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if ($cur_class->can($step)) {
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if ($cur_class->meta->relationship($step)) { #a
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my $next_class = $cur_class->meta->relationsship($step)->class; |
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push @{ $spec->{steps} }, [ $step, $next_class ];
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$cur_class = $next_class; |
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} else { # simple dispatch
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push @{ $spec->{steps} }, [ $step ];
|
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last; |
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} |
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} else {
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$self->unknown_column($col, $path); |
|
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} |
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} |
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|
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return $spec; |
|
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} |
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|
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sub unknown_column {
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my ($self, $col, $path) = @_; |
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return if $self->_csv->ignore_unknown_columns; |
|
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|
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$self->_push_error([ |
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$col, |
|
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undef, |
|
| 99 |
"header field '$col' is not recognized", |
|
| 100 |
undef, |
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0, |
|
| 102 |
]); |
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} |
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|
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sub _csv {
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$_[0]->{_csv};
|
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} |
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|
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sub errors {
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@{ $_[0]->_errors }
|
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} |
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|
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sub _push_error {
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my ($self, @errors) = @_; |
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my @new_errors = ($self->errors, @errors); |
|
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$self->_errors(\@new_errors); |
|
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} |
|
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|
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1; |
|
Auch abrufbar als: Unified diff
Csv Dispatcher implementiert.