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postgres/src/bin/scripts/createlang.sh
Peter Eisentraut 8095924bdd Make sure shell scripts send error messages to stderr.
Improve help output.
Teach droplang to remove 'pltclu'.
2000-11-11 22:59:48 +00:00

275 lines
6.5 KiB
Bash

#!/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 1.17 2000/11/11 22:59:48 petere Exp $
#
#-------------------------------------------------------------------------
CMDNAME=`basename $0`
PATHNAME=`echo $0 | sed "s,$CMDNAME\$,,"`
PSQLOPT=
dbname=
langname=
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
# ----------
# Get options, language name and dbname
# ----------
while [ $# -gt 0 ]
do
case "$1" in
--help|-\?)
usage=t
break
;;
--list|-l)
list=t
;;
# options passed on to psql
--host|-h)
PSQLOPT="$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 $1 | sed 's/^--port=//'`
;;
--username|-U)
PSQLOPT="$PSQLOPT -U $2"
shift;;
-U*)
PSQLOPT="$PSQLOPT $1"
;;
--username=*)
PSQLOPT="$PSQLOPT -U "`echo $1 | sed 's/^--username=//'`
;;
--password|-W)
PSQLOPT="$PSQLOPT -W"
;;
--dbname|-d)
dbname="$2"
shift;;
-d*)
dbname=`echo $1 | sed 's/^-d//'`
;;
--dbname=*)
dbname=`echo $1 | sed 's/^--dbname=//'`
;;
# misc options
--pglib|-L)
PGLIB="$2"
shift;;
-L*)
PGLIB=`echo $1 | sed 's/^-L//'`
;;
--pglib=*)
PGLIB=`echo $1 | sed 's/^--pglib=//'`
;;
-*)
echo "$CMDNAME: invalid option: $1" 1>&2
echo "Try '$CMDNAME -?' for help." 1>&2
exit 1
;;
*)
if [ "$list" != "t" ]
then langname="$1"
if [ "$2" ]
then
shift
dbname="$1"
fi
else dbname="$1"
fi
;;
esac
shift
done
if [ "$usage" ]; then
echo "$CMDNAME installs a procedural language into a PostgreSQL database."
echo
echo "Usage:"
echo " $CMDNAME [options] [langname] dbname"
echo
echo "Options:"
echo " -h, --host=HOSTNAME Database server host"
echo " -p, --port=PORT Database server port"
echo " -U, --username=USERNAME Username to connect as"
echo " -W, --password Prompt for password"
echo " -d, --dbname=DBNAME Database to install language in"
echo " -L, --pglib=DIRECTORY Find language interpreter file in DIRECTORY"
echo " -l, --list Show a list of currently installed languages"
echo
echo "If 'langname' is not specified, you will be prompted interactively."
echo "A database name must be specified."
echo
echo "Report bugs to <pgsql-bugs@postgresql.org>."
exit 0
fi
# ----------
# Check that we have a database
# ----------
if [ -z "$dbname" ]; then
echo "$CMDNAME: missing required argument database name" 1>&2
echo "Try '$CMDNAME -?' for help." 1>&2
exit 1
fi
# ----------
# List option
# ----------
if [ "$list" ]; then
${PATHNAME}psql $PSQLOPT -d "$dbname" -P 'title=Procedural languages' -c "SELECT lanname as \"Name\", lanpltrusted as \"Trusted?\", lancompiler as \"Compiler\" FROM pg_language WHERE lanispl = 't'"
exit $?
fi
# ----------
# Check that we have PGLIB
# ----------
if [ -z "$PGLIB" ]; then
PGLIB='@libdir@'
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 "$langname" in
plpgsql)
lancomp="PL/pgSQL"
trusted="TRUSTED "
handler="plpgsql_call_handler"
object="plpgsql"
;;
pltcl)
lancomp="PL/Tcl"
trusted="TRUSTED "
handler="pltcl_call_handler"
object="pltcl"
;;
pltclu)
lancomp="PL/Tcl (untrusted)"
trusted=""
handler="pltclu_call_handler"
object="pltcl"
;;
plperl)
lancomp="PL/Perl"
trusted="TRUSTED "
handler="plperl_call_handler"
object="plperl"
;;
*)
echo "$CMDNAME: unsupported language '$langname'" 1>&2
echo "Supported languages are 'plpgsql', 'pltcl', 'pltclu', and 'plperl'." 1>&2
exit 1
;;
esac
DLSUFFIX='@DLSUFFIX@'
# ----------
# Check that the shared object for the call handler is installed
# in PGLIB
# ----------
if [ ! -f "$PGLIB/$object$DLSUFFIX" ]; then
(
echo "$CMDNAME: cannot find the file '$PGLIB/$langname$DLSUFFIX'"
echo ""
echo "This file contains the call handler for $lancomp. By default,"
echo "only PL/pgSQL is built and installed; other languages must be"
echo "explicitly enabled at configure time."
echo ""
echo "To install PL/Tcl, make sure the option --with-tcl is given to"
echo "configure, then recompile and install. To install PL/Perl use"
echo "--with-perl."
) 1>&2
exit 1
fi
PSQL="${PATHNAME}psql -A -t -q $PSQLOPT -d $dbname -c"
# ----------
# Make sure the language isn't already installed
# ----------
res=`$PSQL "SELECT oid FROM pg_language WHERE lanname = '$langname'"`
if [ $? -ne 0 ]; then
echo "$CMDNAME: external error" 1>&2
exit 1
fi
if [ "$res" ]; then
echo "$CMDNAME: '$langname' is already installed in database $dbname" 1>&2
# separate exit status for "already installed"
exit 2
fi
# ----------
# Check that there is no function named as the call handler
# ----------
res=`$PSQL "SELECT oid FROM pg_proc WHERE proname = '$handler'"`
if [ ! -z "$res" ]; then
echo "$CMDNAME: A function named '$handler' already exists. Installation aborted." 1>&2
exit 1
fi
# ----------
# Create the call handler and the language
# ----------
$PSQL "CREATE FUNCTION $handler () RETURNS OPAQUE AS '$PGLIB/${object}$DLSUFFIX' LANGUAGE 'newC'"
if [ $? -ne 0 ]; then
echo "$CMDNAME: language installation failed" 1>&2
exit 1
fi
$PSQL "CREATE ${trusted}PROCEDURAL LANGUAGE '$langname' HANDLER $handler LANCOMPILER '$lancomp'"
if [ $? -ne 0 ]; then
echo "$CMDNAME: language installation failed" 1>&2
exit 1
fi
exit 0