mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-11 19:46:36 +03:00
106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# encoding.py - show to change client enkoding (and test it works)
|
|
# -*- encoding: utf8 -*-
|
|
#
|
|
# Copyright (C) 2004-2010 Federico Di Gregorio <fog@debian.org>
|
|
#
|
|
# psycopg2 is free software: you can redistribute it and/or modify it
|
|
# under the terms of the GNU Lesser General Public License as published
|
|
# by the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
|
# License for more details.
|
|
|
|
## put in DSN your DSN string
|
|
|
|
DSN = 'dbname=test'
|
|
|
|
## don't modify anything below this line (except for experimenting)
|
|
|
|
import sys
|
|
import psycopg2
|
|
import psycopg2.extensions
|
|
|
|
if len(sys.argv) > 1:
|
|
DSN = sys.argv[1]
|
|
|
|
print "Opening connection using dns:", DSN
|
|
conn = psycopg2.connect(DSN)
|
|
print "Initial encoding for this connection is", conn.encoding
|
|
|
|
print "\n** This example is supposed to be run in a UNICODE terminal! **\n"
|
|
|
|
print "Available encodings:"
|
|
encs = psycopg2.extensions.encodings.items()
|
|
encs.sort()
|
|
for a, b in encs:
|
|
print " ", a, "<->", b
|
|
|
|
print "Using STRING typecaster"
|
|
print "Setting backend encoding to LATIN1 and executing queries:"
|
|
conn.set_client_encoding('LATIN1')
|
|
curs = conn.cursor()
|
|
curs.execute("SELECT %s::TEXT AS foo", ('àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", unicode(x, 'latin-1').encode('utf-8'), type(x)
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", unicode(x, 'latin-1').encode('utf-8'), type(x)
|
|
|
|
print "Setting backend encoding to UTF8 and executing queries:"
|
|
conn.set_client_encoding('UNICODE')
|
|
curs = conn.cursor()
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù'.encode('utf-8'),))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x, type(x)
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x, type(x)
|
|
|
|
print "Using UNICODE typecaster"
|
|
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
|
|
|
|
print "Setting backend encoding to LATIN1 and executing queries:"
|
|
conn.set_client_encoding('LATIN1')
|
|
curs = conn.cursor()
|
|
curs.execute("SELECT %s::TEXT AS foo", ('àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
|
|
print "Setting backend encoding to UTF8 and executing queries:"
|
|
conn.set_client_encoding('UNICODE')
|
|
curs = conn.cursor()
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù'.encode('utf-8'),))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
curs.execute("SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
|
|
print "Executing full UNICODE queries"
|
|
|
|
print "Setting backend encoding to LATIN1 and executing queries:"
|
|
conn.set_client_encoding('LATIN1')
|
|
curs = conn.cursor()
|
|
curs.execute(u"SELECT %s::TEXT AS foo", ('àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
curs.execute(u"SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
|
|
print "Setting backend encoding to UTF8 and executing queries:"
|
|
conn.set_client_encoding('UNICODE')
|
|
curs = conn.cursor()
|
|
curs.execute(u"SELECT %s::TEXT AS foo", (u'àèìòù'.encode('utf-8'),))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|
|
curs.execute(u"SELECT %s::TEXT AS foo", (u'àèìòù',))
|
|
x = curs.fetchone()[0]
|
|
print " ->", x.encode('utf-8'), ":", type(x)
|