Commit c90881cc authored by Arnaud Fontaine's avatar Arnaud Fontaine

Monkey-patch Products.DCWorkflowGraph.config (Zeo Conflict Resolution issue).

If PATH environment variable is not defined, this Products cannot be
imported. Followup of 399f95f9.
parent 912a2051
......@@ -28,6 +28,56 @@
#
##############################################################################
# Products.DCWorkflowGraph.config does not check the return value of
# getenv('PATH'). This fails if PATH is not defined which is the case when
# running ZEO with SlapOS for example. But, Products.DCWorkflowGraph.__init__
# imports Products.DCWorkflowGraph.config as a side-effect of importing
# getGraph, so the only solution is to create a Module which will hide the
# one from DCWorkflowGraph
from types import ModuleType
dc_workflow_config_module = ModuleType('Products.DCWorkflowGraph.config')
import sys
sys.modules['Products.DCWorkflowGraph.config'] = dc_workflow_config_module
# where is 'pot'?, add your path here
import os
DOT_EXE = 'dot'
bin_search_path = []
if os.name == 'nt':
DOT_EXE = 'dot.exe'
# patch from Joachim Bauch bauch@struktur.de
# on Windows, the path to the ATT Graphviz installation
# is read from the registry.
try:
import win32api, win32con
# make sure that "key" is defined in our except block
key = None
try:
key = win32api.RegOpenKeyEx(win32con.HKEY_LOCAL_MACHINE, r'SOFTWARE\ATT\Graphviz')
value, type = win32api.RegQueryValueEx(key, 'InstallPath')
bin_search_path = [os.path.join(str(value), 'bin')]
except:
if key: win32api.RegCloseKey(key)
# key doesn't exist
pass
except ImportError:
# win32 may be not installed...
pass
else:
# for posix systems
DOT_EXE = 'dot'
path = os.getenv("PATH")
if path is not None:
bin_search_path = path.split(":")
dc_workflow_config_module.bin_search_path = bin_search_path
dc_workflow_config_module.DOT_EXE = DOT_EXE
def getObjectTitle(obj, REQUEST=None):
"""
Get a state/transition title to be displayed in the graph.
......
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