画像判定

【スクリプトエディタで開く】

set strFilePath to "/System/Library/Desktop Pictures/Big Sur Graphic.heic"

set strCommandText to "/usr/bin/xxd -p -l 2 \"" & strFilePath & "\""

set strResponse to do shell script strCommandText

if strResponse is "5249" then

  log "たぶんWEBP"

else if strResponse is "8950" then

  log "たぶんPNG"

  else if strResponse is "ffd8" then

  log "たぶんJPG"

else if strResponse is "4749" then

  log "たぶんGIF"

else if strResponse is "0000" then

  log "たぶんheic"

else

  log "不明"

end if