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|
#!/bin/sh
#-------------------------------------------------------------------------
#
# createlang.sh--
# Install a procedural language in a database
#
# Copyright (c) 1994, Regents of the University of California
#
#
# IDENTIFICATION
# $Header: /cvsroot/pgsql/src/bin/scripts/Attic/createlang.sh,v 1.3 1999/12/16 20:10:02 momjian Exp $
#
#-------------------------------------------------------------------------
CMDNAME=`basename $0`
PSQLOPT=
dbname=
langname=
echo=
list=
# Check for echo -n vs echo \c
if echo '\c' | grep -s c >/dev/null 2>&1
then
ECHO_N="echo -n"
ECHO_C=""
else
ECHO_N="echo"
ECHO_C='\c'
fi
# ----------
# Find the default PGLIB directory
# ----------
postconfig_result="`sh -c postconfig 2>/dev/null`"
if [ "$postconfig_result" ]; then
set -a
eval "$postconfig_result"
set +a
fi
# ----------
# Get options, language name and dbname
# ----------
while [ $# -gt 0 ]
do
case "$1" in
--help|-\?)
usage=t
;;
--list|-l)
list=t
;;
# options passed on to psql
--host|-h)
PSQLOPT="$PSQLOPT -h $2"
shift;;
-h*)
PSQLOPT="$PSQLOPT $1"
;;
--host=*)
PSQLOPT="$PSQLOPT -h "`echo $1 | sed 's/^--host=//'`
;;
--port|-p)
PSQLOPT="$PSQLOPT -p $2"
shift;;
-p*)
PSQLOPT="$PSQLOPT $1"
;;
--port=*)
PSQLOPT="$PSQLOPT -p "`echo $1 | sed 's/^--port=//'`
;;
--user|--username|-U)
PSQLOPT="$PSQLOPT -U '$2'"
shift;;
-U*)
PSQLOPT="$PSQLOPT $1"
;;
--user=*)
PSQLOPT="$PSQLOPT -U "`echo $1 | sed 's/^--user=//'`
;;
--username=*)
PSQLOPT="$PSQLOPT -U "`echo $1 | sed 's/^--username=//'`
;;
--password|-W)
PSQLOPT="$PSQLOPT -W"
;;
--echo|-e)
echo=t
;;
--dbname|--database|-d)
dbname="$2"
shift;;
-d*)
dbname=`echo $1 | sed 's/^-d//'`
;;
--dbname=*)
dbname=`echo $1 | sed 's/^--dbname=//'`
;;
--database=*)
dbname=`echo $1 | sed 's/^--database=//'`
;;
# misc options
--pglib|-L)
PGLIB="$2"
shift;;
-L*)
PGLIB=`echo $1 | sed 's/^-L//'`
;;
--pglib=*)
PGLIB=`echo $1 | sed 's/^--pglib=//'`
;;
*)
langname="$1"
if [ "$2" ]; then
shift
dbname="$1"
fi
;;
esac
shift
done
if [ "$usage" ]; then
echo ""
echo "Usage: $CMDNAME [options] [langname [dbname]]"
echo ""
echo " -h HOSTNAME, --host=HOSTNAME "
echo " -p PORT, --port=PORT "
echo " -U USERNAME, --username=USERNAME "
echo " -W, --password "
echo " -d DBNAME, --database=DBNAME "
echo " -e, --echo "
echo " -q, --quiet "
echo " -D PATH, --location=PATH "
echo " -L PGLIB --pglib=PGLIB "
echo " -?, --help "
echo ""
exit 1
fi
if [ "$list" ]; then
psql $PSQLOPT -d "$dbname" -c "SELECT lanname, lanpltrusted, lancompiler FROM pg_language WHERE lanispl = 't'"
exit $?
fi
# ----------
# Check that we have a database
# ----------
if [ -z "$dbname" ]; then
echo "$CMDNAME: Missing required argument database name. Try -? for help."
exit 1
fi
# ----------
# Check that we have PGLIB
# ----------
if [ -z "$PGLIB" ]; then
echo "Cannot determine the PostgreSQL lib directory (PGLIB). You must"
echo "identify it either with a --pglib option or by setting the PGLIB"
echo "environment variable."
exit 1
fi
# ----------
# If not given on the command line, ask for the language
# ----------
if [ -z "$langname" ]; then
$ECHO_N "Language to install in database $dbname: "$ECHO_C
read langname
fi
# ----------
# Check if supported and set related values
# ----------
case "$langname" in
plpgsql)
lancomp="PL/pgSQL"
trusted="TRUSTED "
handler="plpgsql_call_handler"
;;
pltcl)
lancomp="PL/Tcl"
trusted="TRUSTED "
handler="pltcl_call_handler";;
*)
echo "$CMDNAME: Unsupported language '$langname'."
echo "Supported languages are 'plpgsql' and 'pltcl'."
exit 1
;;
esac
# ----------
# Check that the shared object for the call handler is installed
# in PGLIB
# ----------
if [ ! -f $PGLIB/${langname}__DLSUFFIX__ ]; then
echo "Cannot find the file $PGLIB/${langname}__DLSUFFIX__."
echo ""
echo "This file contains the call handler for $lancomp. By default,"
echo "only PL/pgSQL is built and installed; other languages must be"
echo "explicitly enabled at configure time."
echo ""
echo "To install PL/Tcl, make sure the option --with-tcl is given to"
echo "configure, then recompile and install."
exit 1
fi
if [ "$echo" ]; then
PSQLOPT="$PSQLOPT -e"
else
PSQLOPT="$PSQLOPT -q"
fi
PSQL="psql -A -t $PSQLOPT -d $dbname -c"
# ----------
# Make sure the language isn't already installed
# ----------
res=`$PSQL "SELECT oid FROM pg_language WHERE lanname = '$langname'"`
if [ $? -ne 0 ]; then
echo "Language installation failed."
exit 1
fi
if [ "$res" ]; then
echo "The language '$langname' is already installed in database $dbname."
exit 2
fi
# ----------
# Check that there is no function named as the call handler
# ----------
res=`$PSQL "SELECT oid FROM pg_proc WHERE proname = '$handler'"`
if [ ! -z "$res" ]; then
echo "The language $lancomp isn't created up to now but there is"
echo "already a function named '$handler' declared."
echo "Language installation aborted."
exit 1
fi
# ----------
# Create the call handler and the language
# ----------
$PSQL "CREATE FUNCTION $handler () RETURNS OPAQUE AS '$PGLIB/${langname}__DLSUFFIX__' LANGUAGE 'C'"
if [ $? -ne 0 ]; then
echo "Language installation failed."
exit 1
fi
$PSQL "CREATE ${trusted}PROCEDURAL LANGUAGE '$langname' HANDLER $handler LANCOMPILER '$lancomp'"
if [ $? -ne 0 ]; then
echo "Language installation failed."
exit 1
fi
exit 0
|
