Hi Monks, I have a query. I have an input CSV file that looks like this. 
 NPLUS,32,0,
NW,41,0,1
NWER,51,"0,1,2",12

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This is the format Layer name, layer number, data type, text type. some times there are more than 1 data type, in which case they are grouped using "".

For the first line NPLUS is the layer name,32 is layer number and 0 is the data type. There is no text type for this line

For the second line NW is the layer name,41 is layer number and 0 is the data type and 1 is the text type,

For the last line NWER is the layer name, 51 is the layer number, 0,1,2 is the data type and 12 is the text type.

I want to check the fields and print the following. 
NPLUS layernumber 32 datatype 0,
NW layernumber 41 datatype 0 text 1,
NWER layernumber 51 datatype 0 datatype 1 datatype 2 text 12;

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I have written a sample code, but I am not able to figure out how to split based on two delimiters and then get the required result. the last line also should have a semicolon, where as other lines should have a coma at the end only. Here is the sample code. 
open(my $in, '<', 'Text_File.csv')
    or die "Cannot open Text_File.csv: $!";

open(my $out, '>', 'mask.spec')
    or die "Cannot open mask.spec: $!";

while (my $line = <$in>) { 
#my @fields = split (/(?<="),(?=")/, $line);
    my @fields = split(/,/, $line); 
    if (@fields == 4) { 
        printf {$out} "%s layernum %s datatype %s,%s", @fields; 
    } 
    elsif (@fields == 5) { 
        printf {$out} "%s layernum %s datatype %s text %s,%s", @fields
+;
    } 
}

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Any help would be greatly appreciated.

In reply to splitting csv file and saving data by Ganesh Bharadwaj1

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