extras/inputdev.sh

   1 #!/bin/sh -e
   2 #
   3 # Scans /proc/bus/input/devices for the given device.
   4 #
   5 # (c) 2004 Darren Salt <linux@youmustbejoking.demon.co.uk>
   6 # GPL v2 or later applies.
   7
   8 [ "$1" ] || exit 0
   9
  10 # input device name, less leading "input/"
  11 DEVICE=${1#input/}
  12
  13 # "|"-separated list.
  14 # The first found in the given device's "N:" line will be output.
  15 DEFAULT_KEYWORDS='dvb|saa7134'
  16 KEYWORDS=${2:-$DEFAULT_KEYWORDS}
  17
  18 exec sed -nre '
  19   /^I:/ {
  20     : gather
  21     N
  22     /\nH:/! b gather
  23     /'"$DEVICE"'/ {
  24       s/^.*\nN:[^\n]*("|\b)('"$KEYWORDS"')("|\b)[^\n]*\n.*$/inputdev/
  25       T
  26       p
  27     }
  28   }
  29 ' < /proc/bus/input/devices
  30