json-diff using jd, for diffing Syncthing file debug outputs: https://docs.syncthing.net/rest/db-file-get.html

json-diff

#!/usr/bin/env bash

case $1 in
  -h|--help|'') echo "${0##*/} [files-or-dir]"; exit;;
esac

#requires jd, jq
for f in jd jq; do
  if ! hash $f &>/dev/null; then brew install --quiet $f; fi
done

declare -A FARR
c=0

if [[ -d $1 ]]; then
  FPATH=$(realpath "$1")
  while IFS= read -r FNAME; do
    FARR[$c]="$FNAME"
    (( c++ ))
  done < <(find -s "$FPATH" -type f -name "*.json")
else
  for FNAME in "$@"; do
    FARR[$c]="$FNAME"
    (( c++ ))
  done
fi

ARRSIZE=${#FARR[@]}
if (( ARRSIZE == 0 )); then
  echo 1>&2 "no files to process"
  exit
fi

for (( n=1; n<ARRSIZE; n++ )); do
  (( p = n - 1 ))
  clear
  echo "${FG}comparing ${FARR[$p]} <==> ${FARR[$n]}${FN}"
  jd -f jd -color "${FARR[$p]}" "${FARR[$n]}"
  echo
  echo "${FL}.global.platform.darwin ONLY diff:${FN}"
  jq -r <"${FARR[$p]}" '.global.platform.darwin' >/tmp/p
  jq -r <"${FARR[$n]}" '.global.platform.darwin' >/tmp/n
  if jd -f jd -color /tmp/p /tmp/n; then
    echo "${FG}** no diff **${FN}"
  fi
  echo
  left=$(( ARRSIZE - n - 1 ))
  (( left > 0 )) && read -r -p "press <ENTER> to continue or ⌃c to ABORT ($left left)"
done

rm /tmp/p /tmp/n 2>/dev/null

syncthing/syncthing#9371 (comment)