use base 'Mojo::Base';
-use File::Slurp;
+use Text::CSV;
use Data::Dump qw(dump);
-use Encode;
-
-__PACKAGE__->attr('path');
-__PACKAGE__->attr('full_path'); # FIXME remove full_path
-
-my $null = ''; # FIXME undef?
-
-sub _split_line {
- my ( $delimiter, $line ) = @_;
- my @v;
- while ( $line ) {
- my $v;
- if ( $line =~ s/^"// ) {
- $line =~ s/""/_qq_/gc;
- $line =~ s/^\s*([^"]+)\s*"\Q$delimiter\E?// || die "can't parse $line";
- $v = $1;
- } elsif ( $line =~ s/^\s*([^\Q$delimiter\E]+)\s*\Q$delimiter\E?// ) {
- $v = $1;
- } elsif ( $line =~ s/^\s*\Q$delimiter\E// ) {
- $v = $null;
- } else {
- die "can't parse [$line]\n";
- }
- $v =~ s/^\s*(.+?)\s*$/$1/;
- $v =~ s/_qq_/"/g;
- push @v, $v;
- }
+__PACKAGE__->attr('full_path');
- return @v;
-}
+sub ext { '.csv' };
sub data {
my $self = shift;
- my $path = $self->full_path || $self->path;
+ my $path = $self->full_path;
- my $data = read_file $path, { binmode => ':raw' }; # FIXME configurable!
my $encoding = 'utf-8';
- if ( $path =~ m/\.(\w+).csv/i ) {
+ if ( $path =~ m/\.([\w\-]+).csv/i ) {
$encoding = $1;
}
- warn "decoding ", length($data), " bytes using $encoding\n";
- $data = decode($encoding, $data);
- my @lines = split(/\r?\n/, $data);
- $data = { items => [] };
+ my $data = { items => [] };
+ my @header;
- my $delimiter = ',';
+ open my $fh, "<:encoding($encoding)", $path or die "$path: $!";
+ my $first = <$fh>;
+ my $possible_delimiters;
+ while ( $first =~ s/(\W)// ) {
+ $possible_delimiters->{$1}++;
+ }
+ warn "# possible_delimiters = ",dump($possible_delimiters);
+ seek $fh,0,0; # rewind for Text::CSV
+
+ my @sep_by_usage = sort { $possible_delimiters->{$b} <=> $possible_delimiters->{$a} } keys %$possible_delimiters;
+ my $sep_char = shift @sep_by_usage;
+ while ( $sep_char =~ m/^\s$/ ) {
+ warn "## skip whitespace separator ",dump($sep_char);
+ $sep_char = shift @sep_by_usage;
+ }
- if ( $lines[0] !~ /;/ && $lines[1] =~ /;/ ) {
- shift @lines; # FIXME ship non-header line
- $delimiter = ';';
+ while ( $sep_char =~ m/^\"$/ ) {
+ warn "## skip quote separator ",dump($sep_char);
+ $sep_char = shift @sep_by_usage;
}
- warn "$path ", $#lines + 1, " lines encoding: $encoding delimiter:",dump($delimiter);
+ if ( $sep_char !~ m/,/ && $possible_delimiters->{','} && $path =~ m/\.csv/i ) {
+ $sep_char = ',';
+ warn "## csv file detected so prefer , as separator";
+ }
- my $header_line = shift @lines;
+ warn "sep_char = [$sep_char] for $path\n";
- my @header = _split_line( $delimiter, $header_line );
- warn "# header ",dump( @header );
+ my $csv = Text::CSV->new ( { binary => 1, eol => $/, sep_char => $sep_char } )
+ or die "Cannot use CSV: ".Text::CSV->error_diag ();
- while ( my $line = shift @lines ) {
- chomp $line;
- my @v = _split_line($delimiter, $line);
+ while ( my $row = $csv->getline( $fh ) ) {
+ if ( ! @header ) {
+ @header = @$row;
+ next;
+ }
my $item;
- foreach my $i ( 0 .. $#v ) {
- $item->{ $header[$i] || "f_$i" } = [ $v[$i] ];
+ foreach my $i ( 0 .. $#{$row} ) {
+ $item->{ $header[$i] || "f_$i" } = [ $row->[$i] ];
}
push @{ $data->{items} }, $item;
}
+ $csv->eof or $csv->error_diag();
+ close $fh;
+
$data->{header} = [ @header ];
return $data;