def validate(self):
try:
import xml.parsers.xmlproc.xmlval
except:
raise exceptions.ImportError(
'PyXml is required for validating SVG')
svg = self.toXml()
xv = xml.parsers.xmlproc.xmlval.XMLValidator()
try:
xv.feed(svg)
except:
raise Exception("SVG is not well formed, see messages above")
else:
print("SVG well formed")
def init_db_conn(connect_string, username, passwd, show_connection_info, show_version_info=True):
"""initializes db connections, can work with PyGres or psycopg2"""
global _CONN
try:
dbinfo = connect_string
if show_connection_info:
print(dbinfo)
if USE_JYTHON:
_CONN = zxJDBC.connect(connect_string, username, passwd, 'org.postgresql.Driver')
elif '/' in connect_string:
import odbc
_CONN = odbc.odbc(connect_string)
if show_connection_info:
print(_CONN)
elif connect_string.startswith('Driver='):
import pyodbc
# Driver={PostgreSQL};Server=IP address;Port=5432;Database=myDataBase;Uid=myUsername;Pwd=myPassword;
# Driver={PostgreSQL};Server=isof-test64;Port=5435;Database=isof_stable;Uid=postgres;Pwd=postgres;
_CONN = pyodbc.connect(connect_string)
if show_connection_info:
print(_CONN)
else:
# 'host:[port]:database:user:password'
arr = connect_string.split(':')
if len(arr) > 4:
host = '%s:%s' % (arr[0], arr[1])
port = int(arr[1])
dbname = arr[2]
user = arr[3]
passwd = arr[4]
elif len(arr) == 4:
host = arr[0]
port = -1
dbname = arr[1]
user = arr[2]
passwd = arr[3]
else:
raise exceptions.ImportError('Incorrect connect_string!\n\n%s' % (USAGE))
if port > 0:
host = host.split(':')[0]
sport = 'port=%d' % (port)
else:
sport = ''
dsn = "host=%s %s dbname=%s user=%s password=%s" % (host, sport, dbname, user, passwd)
if show_connection_info:
print(dsn)
dbinfo = 'db: %s:%s' % (host, dbname)
use_pgdb = 0
try:
import psycopg2
except:
try:
import pgdb
use_pgdb = 1
except:
raise exceptions.ImportError('No PostgreSQL library, install psycopg2 or PyGres!')
if not _CONN:
if show_connection_info:
print(dbinfo)
if use_pgdb:
_CONN = pgdb.connect(database=dbname, host=host, user=user, password=passwd)
if show_connection_info:
print(_CONN)
else:
_CONN = psycopg2.connect(dsn)
if show_connection_info:
print(_CONN)
if show_version_info:
add_ver_info(connect_string, username)
except:
ex = sys.exc_info()
s = 'Exception: %s: %s\n%s' % (ex[0], ex[1], dbinfo)
print(s)
return None
return _CONN
# via a dom implementation and directly using <element>text</element> strings
# the latter is way faster (and shorter in coding)
# the former is only used in debugging svg programs
# maybe it will be removed alltogether after a while
# with the following variable you indicate whether to use the dom implementation
# Note that PyXML is required for using the dom implementation.
# It is also possible to use the standard minidom. But I didn't try that one.
# Anyway the text based approach is about 60 times faster than using the full dom implementation.
use_dom_implementation = 0
if use_dom_implementation != 0:
try:
from xml.dom import implementation
from xml.dom.ext import PrettyPrint
except:
raise exceptions.ImportError(
"PyXML is required for using the dom implementation")
# The implementation is used for the creating the XML document.
# The prettyprint module is used for converting the xml document object to a xml file
assert sys.version_info[0] >= 2
if sys.version_info[1] < 2:
True = 1
False = 0
file = open
sys.setrecursionlimit = 50
# The recursion limit is set conservative so mistakes like s=svg() s.addElement(s)
# won't eat up too much processor time.
# the following code is pasted form xml.sax.saxutils
# it makes it possible to run the code without the xml sax package installed