configure

#!/bin/sh

SQUISH=./buildscripts/squish
PROSODY_URL=https://hg.prosody.im/0.10/raw-file/tip/
PREFIX="/usr/local"

LUA_VERSION=5.1
LUA_INTERPRETER=lua$LUA_VERSION

if which $LUA_INTERPRETER>/dev/null; then
	LUA_DIR=$($LUA_INTERPRETER -e 'print((package.path:match("'"${PREFIX}"'[^;]+%?%.lua"):gsub("/%?%.lua$", "")))')
else
	LUA_DIR="$PREFIX/share/lua/$LUA_VERSION"
fi

# Help

show_help() {
cat <<EOF
Configure Prosody prior to building.

--help                      This help.
--prefix                    Installation path prefix (used when installing)
                            Default: $PREFIX
--lua-lib-dir=DIR           You can also specify Lua's libraries dir.
                            Default: $LUA_DIR
--squish                    Path to squish utility (used for building)
                            Default: $SQUISH
--prosody-rev               Prosody revision to pull files from
                            Default: tip
--prosody-url               URL to pull Prosody files from (not compatible with --prosody-rev)
                            Default: $PROSODY_URL
EOF
}


while [ "$1" ]
do
   value="`echo $1 | sed 's/[^=]*=\(.*\)/\1/'`"
   if echo "$value" | grep -q "~"
   then
      echo
      echo '*WARNING*: the "~" sign is not expanded in flags.'
      echo 'If you mean the home directory, use $HOME instead.'
      echo
   fi
   case "$1" in
   --help)
      show_help
      exit 0
      ;;
   --lua-lib-dir=*)
      LUA_LIBDIR="$value"
      ;;
   --with-squish=*)
      SQUISH="$value"
      ;;
   --prosody-rev=*)
      PROSODY_REV="$value"
      PROSODY_REV_SET=yes
      ;;
   --prosody-url=*)
      PROSODY_URL="$value"
      PROSODY_URL_SET=yes
      ;;
   *)
      echo "Error: Unknown flag: $1"
      exit 1
      ;;
   esac
   shift
done

# Sanity-check options

if ! test -x "$SQUISH"; then
	echo "FATAL: Unable to find/use squish: $SQUISH";
	exit 1;
fi

if [ "$PROSODY_URL_SET" = "yes" -a "$PROSODY_REV_SET" = "yes" ]; then
	echo "FATAL: You can only specify one of --prosody-rev and --prosody-url, not both"
	exit 1;
fi

if [ "$PROSODY_REV_SET" = "yes" ]; then
	PROSODY_URL="https://hg.prosody.im/trunk/raw-file/${PROSODY_REV}/"
fi

cat <<EOF >config.unix

# This file was automatically generated by the configure script.
# Run "./configure --help" for details.

SQUISH=./buildscripts/squish
PROSODY_URL=$PROSODY_URL
LUA_DIR=$LUA_DIR
EOF

echo
echo "Using squish from:            $SQUISH"
echo "Installing verse.lua to:      $LUA_DIR"
echo "Fetching Prosody files from:  $PROSODY_URL"
echo
echo "Configured successfully. Please run 'make' to proceed."