File: transpose.awk
   1 #!/usr/bin/awk -f
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2020-2025 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the “Software”), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # transpose [filenames...]
  27 #
  28 # Transpose rows and columns from table-like input(s).
  29 
  30 
  31 { gsub(/\r$/, "") }
  32 
  33 FNR == 1 {
  34     FS = ($0 ~ /\t/) ? "\t" : " "
  35     $0 = $0
  36 }
  37 
  38 {
  39     for (i = 1; i <= NF; i++) lines[i][NR] = $i
  40     if (maxitems < NF) maxitems = NF
  41 }
  42 
  43 END {
  44     for (j = 1; j <= maxitems; j++) {
  45         for (i = 1; i <= NR; i++) {
  46             if (i > 1) printf "\t"
  47             printf "%s", lines[j][i]
  48         }
  49         printf "\n"
  50     }
  51 }