src/ambros

   1 #!/bin/sh
   2 # ambros:
   3 # control script for one channel
   4
   5 if test "$1" = ""
   6 then cat <<EOT
   7 usage: $0 <configfile>
   8
   9 start AMBROS control instance configured by <configfile>
  10 EOT
  11 exit 1
  12 fi
  13
  14 # save directories of scripts and instance ("root", configuration file)
  15 # is somewhat complicated to correctly handle relative paths
  16 # (not using $OLDPWD etc to keep better portability)
  17 owd=`pwd`
  18 cd `dirname $0`
  19 SCRIPTDIR=`pwd`
  20 echo SCRIPTDIR: $SCRIPTDIR
  21 cd "$owd"
  22 cd `dirname $1`
  23 ROOTDIR=`pwd`
  24 echo ROOTDIR: $ROOTDIR
  25 AMBROSCONFIG=`basename $1`
  26
  27 cd $SCRIPTDIR || { echo "cannot access scripts in $SCRIPTDIR" ; exit 3 ; }
  28 # read global settings
  29 . ./constants.sh
  30 # (re)generate morse code table
  31 cd morse && ./chargen.sh
  32
  33 if test ! -d "$ROOTDIR" -o ! -x "$ROOTDIR" -o ! -r "$ROOTDIR" -o ! -w "$ROOTDIR"
  34 then echo "base directory ($ROOTDIR) is not usable, aborting!"
  35 exit 2
  36 fi
  37
  38 echo
  39
  40 # get channel list
  41 cd "$ROOTDIR"
  42 echo working in channel $ROOTDIR
  43 lchannels=`configread $AMBROSCONFIG CHANNELS '.,:;/'`
  44 echo listed channels: $lchannels
  45
  46 # collect channel directory names
  47 unset channels
  48 for ch in $lchannels
  49 do
  50 if test -d $ch -a -x $ch -a -r $ch -a -w $ch
  51 then channels="$ch $channels"
  52 else echo "channel $ch is not read/write/accessible directory, ignoring!"
  53 fi
  54 done
  55
  56 echo
  57
  58 GLOBALSPEED=`configread $AMBROSCONFIG WPM`
  59 GLOBALSPEED=${GLOBALSPEED:-12}
  60 echo global speed $GLOBALSPEED Words/min
  61
  62 cd "$ROOTDIR"
  63 if test ! -d "$SOURCEDIR" -o ! -x "$SOURCEDIR" -o ! -r "$SOURCEDIR" -o ! -w "$SOURCEDIR"
  64 then echo "source directory ($ROOTDIR/$SOURCEDIR) is unusable, aborting!"
  65 exit 2
  66 fi
  67
  68 # handler for aborting
  69 finish () {
  70  echo
  71  echo received abort signal: stopping all subprocesses
  72 # if no PID is set, use 1 (init) as a dummy argument
  73  /bin/kill -TERM ${pidassembler:-1} $pidchannelchief
  74  echo and ending main control loop
  75  date +"at %c"
  76  AMBROSABORT=1
  77 }
  78 AMBROSABORT=0
  79
  80 trap finish INT TERM STOP
  81
  82 echo entering main control loop with PID $$
  83
  84 tmpf=${TMP:-/tmp}/ambros$$.tmp
  85
  86 while test $AMBROSABORT -eq 0
  87 do : # main control loop
  88 echo
  89 echo passing main control loop
  90 date +"at %c"
  91
  92 # collect source names
  93 for ch in $channels
  94 do
  95 csources=`configread "$ch/$CHANNELCONFIG" SOURCES '.,:;/'`
  96 lsources="$csources $lsources"
  97 done
  98 #echo listed sources: $lsources
  99 cd $ROOTDIR/$SOURCEDIR
 100 {
 101  for ls in $lsources
 102  do echo $ls
 103  done
 104 } | sort -r | uniq | {
 105  while read sc
 106  do
 107  if test -d "$sc" -a -x "$sc" -a -r "$sc" -a -w "$sc"
 108  then echo $sc
 109  fi
 110  done
 111 } > $tmpf
 112 sources=`cat $tmpf`
 113 echo currently valid sources: $sources
 114
 115 # fetch and process sources
 116 $SCRIPTDIR/extractor $sources
 117
 118 # start&control `assembler`
 119 # start&control `channelchief`
 120
 121 AMBROSABORT=99
 122
 123 done
 124
 125 rm -f $tmpf
 126
 127 echo
 128 echo finished.
 129