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Hi PMs! I've CSV file, comma delimited, embedded (, & ") in double quotes; as you can see in row given below.

6450458,6011,"Urine - Culture & Sensitivity",1658,"Colony Count:","10^
+3 cfu/ml",,2016-10-26 09:55:34,0,"", ,"",,2016-10-26 09:55:34,SS00002
+03,6,"All Tests Done and Verified",,SCIN72669,2016-10-24 12:04:58,21,
+"Max Smart Super, Speciality Hospital "O"",3445,"Bansidhar Tarai ",0,
+"SAVITRI   DEVI",False,"SAVITRI  ","DEVI",SKCT,334,20905,"Anjani Kuma
+r  Agrawal",1957-01-01 00:00:00,0,NULL,"7838457000","INFO@MAXHEALTHCA
+RE.COM",OP,NO,Verified,2016-10-24 12:04:58,2016-10-24 12:04:58,Lab,24
+3981,0,"",F
6444885,21732,"Blood - Culture & Sensitivity",3147,"Method BacT/ALERT3
+D & Vitek 2","SubHead",,2016-10-26 09:00:11,1,"min", ,"",0,2016-10-26
+ 09:00:11,PM0004746,6,"All Tests Done and Verified",,PMIN4335,2016-10
+-21 19:07:36,25,"PMC",3445,"Bansidhar Tarai ",0,"SUSHILA DEVI 94907",
+False,"SUSHILA DEVI","94907",PMCL,1861,69142,"Parkash   Gera",1961-01
+-01 00:00:00,0,NULL,"0143000000","INFO@MAXHEALTHCARE.COM",OP,NO,Verif
+ied,2016-10-21 19:07:36,2016-10-21 19:07:36,Lab,781642,0,"",F
6444891,21732,"Blood - Culture & Sensitivity",3147,"Method BacT/ALERT3
+D & Vitek 2","SubHead",,2016-10-26 09:00:36,1,"min", ,"",0,2016-10-26
+ 09:00:36,PM0004748,6,"All Tests Done and Verified",,PMIN4337,2016-10
+-21 19:11:24,25,"PMC",3445,"Bansidhar Tarai ",0,"TUSHAR BHATIA 94916"
+,False,"TUSHAR BHATIA","94916",PMCL,1876,69142,"Parkash   Gera",1985-
+01-01 00:00:00,0,NULL,"0143000000","INFO@MAXHEALTHCARE.COM",OP,NO,Ver
+ified,2016-10-21 19:11:24,2016-10-21 19:11:24,Lab,773211,0,"",M
[download]

Requirement: Sort file based on 3 columns in file i.e. primary: 31, secondary: 1, tertiary: 2 i.e. sorted as below, 1st -> 2nd -> 3rd

1,2,3
1,2,4
1,3,4
2,1,5
[download]

What I'm doing: i.) converting file to pipe(|) separated from comma(,) -> using Text::CSV module ii.) Sorting using File::Sort Here is the code snippet:

&commaToPipeDelimiter($maxFile, $pipeMaxFile);

sort_file({t => '|', k => ['31n', '1n', '2n'], I => $pipeMaxFile, o =>
+ $sortedMaxFile});

sub commaToPipeDelimiter{
    my ($file, $pfile) = @_;
    my $csv = Text::CSV->new({binary => 1, decode_utf8 => 1, auto_diag
+ => 1, allow_loose_quotes => 1});
    open(my $data, '<:encoding(utf8)', $file) or die "Could not open '
+$file' $!\n";
    open(W, ">".$pfile)    ||    die "Could not open $pfile $!\n";

    while(my $line = <$data>){
    chomp $line;
    if($csv->parse($line)){
        my @fields = $csv->fields();
        print W join("|",@fields),"\n";
    }
    else{
        warn "Line could not be parsed: $!\n";
    }
}
[download]

Is there some other efficient way someone can suggest? Rather than converting file into pipe separated file then sort since files could be much larger. FYI -> Embedded commas need to be taken care of.

-Chetan

In reply to Need to sort comma delimited, double quoted file by CSharma

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