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How can awk ignore the field delimiter like comma inside a field?


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# 1  
How can awk ignore the field delimiter like comma inside a field?

We have a csv file as mentioned below and the requirement is to change the date format in file as mentioned below.

Current file (file.csv)
----------------------
Code:
 empname,date_of_join,dept,date_of_resignation
ram,08/09/2015,sales,21/06/2016
"akash,sahu",08/10/2015,IT,21/07/2016

Required output file
----------------------
Code:
 empname,date_of_join,dept,date_of_resignation
ram,2015-09-08,sales,2016-06-21
"akash,sahu",2015-10-08,IT,2016-07-21

We are using below script for this. This script works fine for first record, but it does not give correct output for second record. Please see the actual output and script below-

Awk Script (This is .ksh file)
-------------------------------

Code:
 #!/bin/ksh
awk 'BEGIN{ FS=OFS="," 
            nf=split("2,4", f)                           # array of input field numbers
            nd=split(",7,4,-,4,2,-,1,2", d)        # array of date subfield info (in output order): prefix(out),pos(in),len(in)         
     }
     { for(i=1; i<=nf; i++){ 
           if($f[i]) {
               fmod=""
               for(j=1; j<=nd; j+=3) fmod=fmod sprintf("%s", d[j] substr($f[i], d[j+1], d[j+2]))
               $f[i] = fmod
           }
       } print
     }' file.csv

Actual Output which is not correct
--------------------------------------
Code:
 ram,2015-09-08,sales,2016-06-21
"akash,-u"-sa,08/10/2015,--IT,21/07/2016

Please suggest me, how Awk can handle the second record which contain comma inside a field?

Last edited by Don Cragun; 11-29-2016 at 03:42 AM.. Reason: Add CODE and ICODE tags, again.
# 3  
How about
Code:
awk -F, -vOFS=, '{for (i=1; i<=NF; i++) {split ($i, T, "/"); if (T[1] < 32 && T[2] < 13 && T[3] > 2000) $i = T[3] "-" T[2] "-" T[1]}} 1' file
empname,date_of_join,dept,date_of_resignation
ram,2015-09-08,sales,2016-06-21
"akash,sahu",2015-10-08,IT,2016-07-21

# 5  
Where and how does it fail? Any error message? Wrong output?
It works here on linux and FreeBSD.

And, of course:
Quote:
Originally Posted by Don Cragun
If you are using a Solaris/SunOS system, use /usr/xpg4/bin/awk or nawk instead of awk.
# 6  
Hi Rudi,

On Solaris, awk is giving below error message-

Code:
awk: syntax error near line 1
awk: bailing out near line 1

but when I am tried with nawk, it is giving output but removing all commas like below-

Code:
ram 2015-09-08 sales 2016-06-21
"akash sahu" 2015-10-08 IT 2016-07-21

Here date conversion is working fine but I want comma also between the fields. Please see the below required output-

Code:
ram,2015-09-08,sales,2016-06-21
"akash,sahu",2015-10-08,IT,2016-07-21


Moderator's Comments:
Mod Comment Please wrap code, files, input & output/errors in CODE tags, like this:-
Quote:
[CODE]This is my code[/CODE]
to produce the following (fixed character width, space respected):-
Code:
This is my code

Not only does it make posts far easier to read, but CODE and ICODE sections respect multiple space and have fixed width characters, which is important for easily seeing input/output requirements.

Last edited by rbatte1; 11-29-2016 at 06:19 AM.. Reason: Added CODE tags
# 7  
Try a little modification:
Code:
-v OFS=","

This User Gave Thanks to RudiC For This Post:
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