#!/bin/sh
# Part of EasySQL, Copyright (c) 1997 by Andrew Maltsev <am@amsoft.ru>
#
# Configuration utility for EasySQL drivers. Have to be run at least
# once (usually from top level configure)
#======================================================================

# Asking a question. Answer is in `asnwer' and default value is in `default'
#
ask ()
{ if [ "x$default" = x ]
   then
    default=none
  fi
  echo -n "$* ? [$default] "
  read answer
  if [ "x$answer" = "x" ]
   then
    answer="$default"
  fi
  if [ "x$answer" = xnone ]
   then
    answer=
  fi
  default=
}

# List of all included drivers
#
driverlist ()
{ drivers=
  for i in *
   do
    if [ -d "$i" -a -f "$i/Driver" -a "x$i" != "xinclude" ]
     then
      echo "$i"
    fi
  done
}

# Reading configs
#
readconfig ()
{ sed -e '/^[ 	]*#/d' \
      -e '/^[ 	]*$/d' \
      -e 's/[ 	]*=[ 	]*/ /g' \
         $configs |
  while read line
   do
    set - $line
    name=$1
    shift
    value=$*
    if [ "x$name" = xDRIVERNAME ] || echo "x$name" | grep -q '^xDC_'
     then
      echo "$name='$value'"
    fi
  done
}

# Configure driver
#
driverconf ()
{ drvpath=$1
  if [ ! -d "$drvpath" ]
   then
    echo "$drvpath -- No such driver found!"
    exit 1
  fi
  if [ ! -s "$drvpath/Driver" ]
   then
    echo "$drvpath -- No driver description found!"
    exit 1
  fi
  configs="$drvpath/Driver"
  custconf="$drvpath/.config"
  if [ -s "$custconf" ]
   then
    configs="$configs $custconf"
  fi

  DRIVERNAME=
  eval `readconfig $configs`
  if [ "x$DRIVERNAME" = "x" ]
   then
    echo "$drvpath -- no driver name defined!"
    exit 1
  fi

  echo "Configuring \`$DRIVERNAME' driver.."
  echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
  echo
  if [ -f "$drvpath/.required" ]
   then
    default='Y/n'
   else
    default='y/N'
  fi
  ask "Do you want to compile \`$DRIVERNAME'"
  if [ "x$answer" != xy -a "x$answer" != xY -a "x$answer" != xY/n ]
   then
    rm -f "$drvpath/.required"
    touch "$drvpath/.config"
    echo "Ok. Compilation of this driver will be skipped.."
    echo
    return
  fi

# Include path
#
  default="$DC_INCPATH"
  ask "Include path"
  DC_INCPATH="$answer"

# Library path
#
  default="$DC_LIBPATH"
  ask "Libraries path"
  DC_LIBPATH="$answer"

# Libraries
#
  default="$DC_LIBRARIES"
  ask "Libraries itself"
  DC_LIBRARIES="$answer"

# Flags
#
  default="$DC_FLAGS"
  ask "Any additional compilator flags"
  DC_FLAGS="$answer"

# Configuring driver
#
  echo "DC_INCPATH   = $DC_INCPATH"		>  $custconf
  echo "DC_LIBPATH   = $DC_LIBPATH"		>> $custconf
  echo "DC_LIBRARIES = $DC_LIBRARIES"		>> $custconf
  echo "DC_FLAGS     = $DC_FLAGS"		>> $custconf

# Enabling driver
#
  touch "$drvpath/.required"

# Ok
#
  echo "\`$DRIVERNAME' driver has been configured.."
  echo
}

# Help
#
if [ "x$1" = "x-h" -o "x$1" = "x--help" ]
 then
  echo "Usage: configure [driver drvname] [list]"
  exit 1
fi

# Individual driver configuring
#
if [ "x$1" = "xdriver" ]
 then
  driverconf $2
  exit 0
fi

# Driver's list
#
if [ "x$1" = "xlist" ]
 then
  driverlist
  exit 0
fi

# Configuring drivers
#
echo "Configuring drivers.."
echo "~~~~~~~~~~~~~~~~~~~~~"
echo
echo "For each driver you want to compile you will need to specify exact place"
echo "of where appropriate header files and libraries are located."
echo "If you do not want to build any specific driver - just answer \`no'"
echo "to the first question".
echo
for drv in `driverlist`
 do
  driverconf $drv
done
echo "========================================================================="