Using awk printf to urldecode text

Question

I\'m using awk to urldecode some text.

If I code the string into the printf statement like printf \"%s\", \"\\x3D\" it correct

Answer 1

This relies on gnu awk's extension of the split function, but this works:

gawk '{ numElems = split($0, arr, /%../, seps);
        outStr = ""
        for (i = 1; i <= numElems - 1; i++) {
            outStr = outStr arr[i]
            outStr = outStr sprintf("%c", strtonum("0x" substr(seps[i],2)))
        }
        outStr = outStr arr[i]
        print outStr
      }'