How to truncate only given column length

awksed

INPUT: 

a@notebook:~$ cat in.csv
'XYZ843141'^'ASDFSAFXYVFSHGDSDg sdGDS  dsGDSgfa assfd faSDFAS saDFSAFD adFSA343fa sdfSADF'^'BAAAR'^'YYY'^'..... and so on, further columns
'YYZ814384'^'ASfdEtRiuognfnseaFREQTzKb   aSFfdsaADSFSA  adsFdsa34 34 ASFfsas  saftrzj etrzrasdfasffasf safs'^'foooobaaar'^'ZZZ'^'..... and so on, further columns

OUTPUT: 

a@notebook:~$ cat in.csv | SOMEMAGIC
'XYZ843141'^'ASDFSAFXYVFSHGDSDg s'^'BAAAR'^'YYY'^'..... and so on, further columns
'YYZ814384'^'ASfdEtRiuognfnseaFRE'^'foooobaaar'^'ZZZ'^'..... and so on, further columns

My question: If: 

'^'

is the separator, then how can SOMEMAGIC (an awk/sed??) truncate the second column to given length? Example: 20 chars max, from this: 

ASDFSAFXYVFSHGDSDg sdGDS  dsGDSgfa assfd faSDFAS saDFSAFD adFSA343fa sdfSADF

to this: 

ASDFSAFXYVFSHGDSDg s

and preserve all the other things :\

Best Answer

> awk -v OFS="'^'" -F"'\\\\^'" '{if(length($2)>20) $2=substr($2,1,20); print;}' file
'XYZ843141'^'ASDFSAFXYVFSHGDSDg s'^'BAAAR'^'YYY'^'..... and so on, further columns
'YYZ814384'^'ASfdEtRiuognfnseaFRE'^'foooobaaar'^'ZZZ'^'..... and so on, further columns
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