perl循环并写入csv？

Question

在这个程序中，我有函数内部没有子函数“输出”，程序正在循环文件并在 csv 文件中打印。

但是使用子函数“输出”它不是循环的，它只将第一种类型写入 csv 文件？

 sub outputType(){
    print "Choose Your Output Method"."\n";
    print "1.Dumper". "\n";
    print "2.TSV". "\n";
    print $input;
    chomp($cinput = <>);
    nswitch($cinput){
       case 1 : {csv();} #Function CSV will be called based on the user request 
       case 2 : {output();} #Function Output will be called based on user request
       default : {print "Enter Correct value". "\n"; if($cinput>3 || $cinput ne "\d+"){exit;}}
}

}
outputType();

sub csv(){

    my $csv = Text::CSV_XS->new ({ binary => 1 }) or
    die "Cannot use CSV: ".Text::CSV_XS->error_diag ();
    #$csv->eol ("\r\n");
    open my $f1, "<:encoding(utf8)", "upcs.tsv" or die "upcs.tsv: $!";
    #open my $f1, '<', 'upcs.tsv';

    my $sem3 = Net::Semantics3::Products->new (
        api_key => 'SEM3F9C9',
        api_secret => 'OGU4N2M3OTI4NGY',
    );

    #my $csv = Text::CSV->new ({
         #'quote_char'  => '',
         #'escape_char' => '',
     #   'sep_char'    => "\t",
      #   'binary'      => 1
     #});

    my @field;
    while(my $rows = $csv->getline ($f1)){
    #print STDERR Dumper $rows->[0];
    my $a = $rows->[0]."\n";
    push(@field,$a);
    #$csv -> print($f3,$_) for \@field
    }
    #close $f1;
    #$csv->eol ("\r\n");


    #print scalar(@field);


    open my $f3, ">:encoding(utf8)", "frameworkresult.csv" or die "frameworkresult.csv: $!";
    $csv->eol ("\r\n"); 

    #open my $f3, '>', 'frameworkresult.tsv';
    my @headers = qw/
    Name
    UPC
    Price/;
    $csv->print ($f3, $_) for \@headers;
    $csv->eol ("\r\n"); 
    my $ctr= 0;


    foreach my $input (@field){

        print $input;
        $sem3->add("products","upc",$input);
        my $nextProductsRef = $sem3->get_products();

        my $results = $nextProductsRef->{results};
        my @data;
        foreach my $result (@$results) {
            $ctr++;

            #print STDERR " Name: ".$result->{name}."\n";

            #print STDERR " UPC: ".$result->{upc}."\n";

            #print STDERR " Price: ".$result->{price}."\n";
            my $f = $result->{name};
            my $g = $result->{upc};
            my $h = $result->{price};
            push(@data,$f);
            push(@data,$g);
            push(@data,$h);

            #exit if $ctr >2;
        }
        print Dumper(@data);
        sub output(){
           $csv->print($f3,\@data);
        }
        $csv->eol ("\r\n"); 


    }

}

Answer 1

您似乎正在编译您的@data，但实际上并未输出它。也许这只是开发过程中的一个错误？

将对$csv->print 的调用移动到您的循环中：

        push(@data,$f);
        push(@data,$g);
        push(@data,$h);

        $csv->print($f3,\@data);

        #exit if $ctr >2;
    }

更新

既然你问如何使用子程序来做到这一点：

    push(@data,$f);
    push(@data,$g);
    push(@data,$h);

    amazing_subroutine($csv, $f3, \@data);

    #exit if $ctr >2;
}

sub amazing_subroutine {
    my ($csv, $f3, $dataref) = @_;
    $csv->print($f3, $dataref);
}