import src.debug as DBG
import pprint as PP
+
class Environ:
"""\
Class to manage the environment context
def append_value(self, key, value, sep=os.pathsep):
"""\
- append value to key using sep
-
+ append value to key using sep,
+ if value contains ":" or ";" then raise error
+
:param key str: the environment variable to append
:param value str: the value to append to key
:param sep str: the separator string
"""
+ for c in [";", ":"]: # windows or linux path separators
+ if c in value:
+ raise Exception("Environ append key '%s' value '%s' contains forbidden character '%s'" % (key, value, c))
# check if the key is already in the environment
if key in self.environ:
value_list = self.environ[key].split(sep)
def prepend_value(self, key, value, sep=os.pathsep):
"""\
- prepend value to key using sep
+ prepend value to key using sep,
+ if value contains ":" or ";" then raise error
:param key str: the environment variable to prepend
:param value str: the value to prepend to key
:param sep str: the separator string
"""
+ for c in [";", ":"]: # windows or linux path separators
+ if c in value:
+ raise Exception("Environ prepend key '%s' value '%s' contains forbidden character '%s'" % (key, value, c))
+ # check if the key is already in the environment
if key in self.environ:
value_list = self.environ[key].split(sep)
if not value in value_list:
:param sep str: the separator string
"""
if isinstance(value, list):
- for v in value:
+ for v in reversed(value): # prepend list, first item at last to stay first
self.prepend_value(key, v, sep)
else:
self.prepend_value(key, value, sep)
