mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-22 20:06:49 +01:00
120 lines
3.9 KiB
Python
120 lines
3.9 KiB
Python
# MIT License
|
|
#
|
|
# Copyright The SCons Foundation
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
# a copy of this software and associated documentation files (the
|
|
# "Software"), to deal in the Software without restriction, including
|
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
# the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included
|
|
# in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
|
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
import re
|
|
|
|
_is_valid_var = re.compile(r'[_a-zA-Z]\w*$')
|
|
|
|
_rm = re.compile(r'\$[()]')
|
|
_remove = re.compile(r'\$\([^$]*(\$[^)][^$]*)*\$\)')
|
|
|
|
# Regular expressions for splitting strings and handling substitutions,
|
|
# for use by the scons_subst() and scons_subst_list() functions:
|
|
#
|
|
# The first expression compiled matches all of the $-introduced tokens
|
|
# that we need to process in some way, and is used for substitutions.
|
|
# The expressions it matches are:
|
|
#
|
|
# "$$"
|
|
# "$("
|
|
# "$)"
|
|
# "$variable" [must begin with alphabetic or underscore]
|
|
# "${any stuff}"
|
|
#
|
|
# The second expression compiled is used for splitting strings into tokens
|
|
# to be processed, and it matches all of the tokens listed above, plus
|
|
# the following that affect how arguments do or don't get joined together:
|
|
#
|
|
# " " [white space]
|
|
# "non-white-space" [without any dollar signs]
|
|
# "$" [single dollar sign]
|
|
#
|
|
_dollar_exps_str = r'\$[\$\(\)]|\$[_a-zA-Z][\.\w]*|\${[^}]*}'
|
|
_dollar_exps = re.compile(r'(%s)' % _dollar_exps_str)
|
|
_separate_args = re.compile(r'(%s|\s+|[^\s$]+|\$)' % _dollar_exps_str)
|
|
|
|
# This regular expression is used to replace strings of multiple white
|
|
# space characters in the string result from the scons_subst() function.
|
|
_space_sep = re.compile(r'[\t ]+(?![^{]*})')
|
|
|
|
class ValueTypes:
|
|
"""
|
|
Enum to store what type of value the variable holds.
|
|
"""
|
|
UNKNOWN = 0
|
|
STRING = 1
|
|
CALLABLE = 2
|
|
VARIABLE = 3
|
|
|
|
|
|
class EnvironmentValue:
|
|
"""
|
|
Hold a single value. We're going to cache parsed version of the file
|
|
We're going to keep track of variables which feed into this values evaluation
|
|
"""
|
|
def __init__(self, value):
|
|
self.value = value
|
|
self.var_type = ValueTypes.UNKNOWN
|
|
|
|
if callable(self.value):
|
|
self.var_type = ValueTypes.CALLABLE
|
|
else:
|
|
self.parse_value()
|
|
|
|
|
|
def parse_value(self):
|
|
"""
|
|
Scan the string and break into component values
|
|
"""
|
|
|
|
try:
|
|
if '$' not in self.value:
|
|
self._parsed = self.value
|
|
self.var_type = ValueTypes.STRING
|
|
else:
|
|
# Now we need to parse the specified string
|
|
result = _dollar_exps.sub(sub_match, args)
|
|
print(result)
|
|
except TypeError:
|
|
# likely callable? either way we don't parse
|
|
self._parsed = self.value
|
|
|
|
def parse_trial(self):
|
|
"""
|
|
Try alternate parsing methods.
|
|
:return:
|
|
"""
|
|
parts = []
|
|
for c in self.value:
|
|
pass
|
|
|
|
|
|
class EnvironmentValues:
|
|
"""
|
|
A class to hold all the environment variables
|
|
"""
|
|
def __init__(self, **kw):
|
|
self._dict = {}
|
|
for k in kw:
|
|
self._dict[k] = EnvironmentValue(kw[k])
|