add special characters in a text using awk

Question

I have a file which is :

line1
line2
line3

What I am trying to have is

"line1"{
"line1"
 }

I am trying to do this using awk but I don't know how to use the special characters. For now I have this.

awk '{ "$0" {"$0"} }' 

Answer 1

$ awk '{$0="\""$0"\""; print $0 "{\n" $0 "\n}"}' file
"line1"{
"line1"
}
"line2"{
"line2"
}
"line3"{
"line3"
}

Answer 2

$ awk -v q='"' '{ql = q $0 q; print ql "{" ORS ql ORS "}" }' ip.txt
"line1"{
"line1"
}
"line2"{
"line2"
}
"line3"{
"line3"
}

• -v q='"' save the double quote character in variable named q, makes it easier to insert double quotes instead of messing with escapes
• ql = q $0 q this adds double quotes around the input record
• ql "{" ORS ql ORS "}" required output, ORS is output record separator which is newline character by default
  • space between the different parameters is ignored, use " }" to get a space before } in the output