#!/bin/sh
#
# usage: restart
#
# REQUIRED: You must set this to the path to your game directory.
# E.g.: /home/mush/game
GAMEDIR=

# OPTIONAL things that you may want to tweak.

# Uncomment the line below to attempt to allow crashes to produce
# core dumps. If you're getting crashes, this is the best way
# to debug them.
#ulimit -c unlimited

# Internationalization stuff
# Set LANG here to get international character sets and, if someone's
# done it, translation of messages.
# Vaild locales are usually <lang_code>_<COUNTRY CODE>
# Example (uncomment to use):
#LANG=fr_FR

# Time zone stuff
# If you want your MUSH to run in a different timezone than the one
# you're in, you need to identify the target time zone file in 
# /usr/share/zoneinfo or /usr/lib/zoneinfo. Then uncomment the next
# two lines and set TZ to the desired timezone file, as shown, with
# an initial colon:
#TZ=:EST5EDT
#export TZ


# The config file. Best to keep this as is. If you must change
# the name, make it a link to mush.cnf.
CONF_FILE=mush.cnf

#######################################################################

if [ -z "$GAMEDIR" ]; then
  echo "You must set GAMEDIR in the restart script."
  exit 1
fi

if [ ! -d "$GAMEDIR" ]; then
  echo "GAMEDIR doesn't appear to be a directory. It's: $GAMEDIR"
  exit 1
fi

cd $GAMEDIR
echo Running from `pwd`

if [ ! -f "$CONF_FILE" ]; then
  echo "CONF_FILE doesn't exist. It's: $CONF_FILE"
  echo "Create $CONF_FILE from $GAMEDIR/mushcnf.dst"
  exit 1
fi

# If netmush isn't here, they probably didn't make install
# In any case, we'd better not proceed.
if [ ! -e netmush ]; then
  echo "I don't see $GAMEDIR/netmush. Did you remember to make install?"
  exit 1
fi 

#
# Read the cnf file and set some variables.
#
INDB=`egrep "^input_database" $CONF_FILE | sed "s/.*[ 	][ 	]*.*\/\(.*\)/\1/"`
OUTDB=`egrep "^output_database" $CONF_FILE | sed "s/.*[ 	][ 	]*.*\/\(.*\)/\1/"`
PANICDB=`egrep "^crash_database" $CONF_FILE | sed "s/.*[ 	][ 	]*.*\/\(.*\)/\1/"`
PANICDIR=`egrep "^crash_database" $CONF_FILE | sed "s/.*[ 	][ 	]*\(.*\)\/.*/\1/"`
COMPRESSOR="cat"
SUFFIX=""

# Find out what the compression program is, if any
egrep -s "^compress_program[ 	]*[A-Za-z0-9]" $CONF_FILE
nocompress=$?
if [ "$nocompress" -eq 0 ]; then
    COMPRESSOR=`egrep "^compress_program" $CONF_FILE | sed "s/[^ 	]*[ 	]*\(.*\)/\1/"`
    SUFFIX=`egrep "^compress_suffix" $CONF_FILE | sed "s/[^ 	]*[ 	]*\(.*\)/\1/"`
fi
  

#-- start up everything

# Prevent double-starting things. You may need to provide a pathname for
#  some of the commands. System V flavors need "ps -f" instead of "ps uwx".
mush=`ps uwwx | grep " $GAMEDIR/$CONF_FILE" | grep -v grep | wc -l`


if [ "$mush" -gt 0 ]; then
  echo Mush already active or some other process is using $GAMEDIR/$CONF_FILE.
  exit 0
fi

echo Building text file indexes.
(cd txt; make)

echo Restarting Mush.

if [ -r "$PANICDIR/$PANICDB" ]; then
   end="`tail -1 $PANICDIR/$PANICDB`"
   if [ "$end" = "***END OF DUMP***" ]; then
      echo "Recovering PANIC dump."
      cat $PANICDIR/$PANICDB | $COMPRESSOR > data/$OUTDB$SUFFIX
      rm $PANICDIR/$PANICDB
      echo "PANIC dump successfully recovered."
   else
      mv $PANICDIR/$PANICDB save/$PANICDB.corrupt
      echo "Warning: PANIC dump corrupt. Using older db."
   fi
fi

rm -f log/*.log

if [ -r "data/$OUTDB$SUFFIX" ]; then
   rm -f save/$INDB$SUFFIX.old
   mv -f data/$INDB$SUFFIX save/$INDB$SUFFIX.old
   mv data/$OUTDB$SUFFIX data/$INDB$SUFFIX
else
   echo "No $OUTDB$SUFFIX found."
   if [ -r "data/$INDB$SUFFIX" ]; then
      echo "Using $INDB$SUFFIX."
   else
      echo "No $INDB$SUFFIX found."
      if [ -r "save/$INDB$SUFFIX.old" ]; then
	 echo "Using save/$INDB$SUFFIX.old."
	 cp save/$INDB$SUFFIX.old data/$INDB$SUFFIX
      else
	echo "No database found. Mush will start with a minimal world."
     fi
   fi
fi

if [ -r reboot.db ]; then
  rm -f reboot.db
fi

DATEMSK="${GAMEDIR}/getdate.template"
export DATEMSK

LC_ALL=$LANG LANG=$LANG ./netmush $GAMEDIR/$CONF_FILE &