postgresql: Grant all rights on a database to a user

Ever tried the $SUBJECT task with postgresql? It's a bit difficult.
You need something along the lines of this...

#!/bin/sh

DB="$1"
USER="$2"
PSQL="psql -q -n -A -t"
SCHEMES="'public'"

if [ -z "$1" ]; then
        echo No name given
        exit
fi

if [ -z "$2" ]; then
        USER="$1"
fi
echo "-- Granting rights on $DB to $USER ($SCHEMES)"
# tables
Q="select 'grant all on '||schemaname||'.'||tablename||' to \\\"$USER\\\";' from pg_tables where schemaname in ($SCHEMES);"
$PSQL -c "$Q" "$DB";

# views
Q="select 'grant all on '||schemaname||'.'||viewname||' to \\\"$USER\\\";' from pg_views where schemaname in ($SCHEMES);"
$PSQL -c "$Q" "$DB";

# sequences
Q="select 'grant all on function '||n.nspname||'.'||p.proname||'('||oidvectortypes(p.proargtypes)||') to \\\"$USER\\\";' from pg_proc p, pg_namespace n where n.oid = p.pronamespace and n.nspname in ($SCHEMES);"
$PSQL -c "$Q" "$DB";

# functions
Q="select 'grant all on '||n.nspname||'.'||c.relname||' to \\\"$USER\\\";' from pg_class c, pg_namespace n where n.oid = c.relnamespace and c.relkind IN ('S') and n.nspname in ($SCHEMES);"
$PSQL -c "$Q" "$DB";

(Sorry for the crappy formatting, drupal & me sucks)

This will generate a script which in turn will grant the rights. So a typical call will be (as postgres user)

./grant mydatabase myuser | psql mydatabase