File: jsons.sh 1 #!/bin/sh 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 # jsons [options...] [filenames...] 27 # 28 # JSON Strings turns TSV (tab-separated values) data into a JSON array of 29 # objects whose values are strings or nulls, the latter being used for 30 # missing trailing values. 31 32 33 # handle leading options 34 case "$1" in 35 -h|--h|-help|--help) 36 awk '/^# +jsons /, /^$/ { gsub(/^# ?/, ""); print }' "$0" 37 exit 0 38 ;; 39 esac 40 41 if [ $# -gt 1 ]; then 42 printf "\e[31mmultiple inputs not allowed\e[0m\n" > /dev/stderr 43 exit 1 44 fi 45 46 47 awk -F "\t" ' 48 function stringify(s) { 49 gsub(/\\/, "\\\\", s) 50 gsub(/"/, "\\\"", s) 51 return sprintf("\"%s\"", s) 52 } 53 54 { gsub(/\r$/, "") } 55 56 NR == 1 { 57 key_count = NF 58 for (i = 1; i <= NF; i++) { 59 keys[i] = stringify($i) 60 } 61 next 62 } 63 64 NR == 2 { printf "[\n"; fflush() } 65 NR > 2 { printf ",\n"; fflush() } 66 67 { 68 if (NF > key_count) { 69 msg = "found row with more values than the keys/header" 70 printf "\x1b[31m%s\x1b[0m\n", msg > "/dev/stderr" 71 exit 1 72 } 73 74 printf " {" 75 for (i = 1; i <= NF; i++) { 76 if (i > 1) printf ", " 77 printf "%s: %s", keys[i], stringify($i) 78 } 79 for (i = NF + 1; i <= key_count; i++) { 80 printf ", %s: null", keys[i] 81 } 82 printf "}"; fflush() 83 } 84 85 END { 86 printf (NR <= 1) ? "[]\n" : "\n]\n" 87 } 88 ' "$@"