ref: 5a2a6c66beda0cf64fb687834118e78ed268c1b6
dir: /waflib/ConfigSet.py/
#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
import copy,re,os
from waflib import Logs,Utils
re_imp=re.compile('^(#)*?([^#=]*?)\ =\ (.*?)$',re.M)
class ConfigSet(object):
__slots__=('table','parent')
def __init__(self,filename=None):
self.table={}
if filename:
self.load(filename)
def __contains__(self,key):
if key in self.table:return True
try:return self.parent.__contains__(key)
except AttributeError:return False
def keys(self):
keys=set()
cur=self
while cur:
keys.update(cur.table.keys())
cur=getattr(cur,'parent',None)
keys=list(keys)
keys.sort()
return keys
def __str__(self):
return"\n".join(["%r %r"%(x,self.__getitem__(x))for x in self.keys()])
def __getitem__(self,key):
try:
while 1:
x=self.table.get(key,None)
if not x is None:
return x
self=self.parent
except AttributeError:
return[]
def __setitem__(self,key,value):
self.table[key]=value
def __delitem__(self,key):
self[key]=[]
def __getattr__(self,name):
if name in self.__slots__:
return object.__getattr__(self,name)
else:
return self[name]
def __setattr__(self,name,value):
if name in self.__slots__:
object.__setattr__(self,name,value)
else:
self[name]=value
def __delattr__(self,name):
if name in self.__slots__:
object.__delattr__(self,name)
else:
del self[name]
def derive(self):
newenv=ConfigSet()
newenv.parent=self
return newenv
def detach(self):
tbl=self.get_merged_dict()
try:
delattr(self,'parent')
except AttributeError:
pass
else:
keys=tbl.keys()
for x in keys:
tbl[x]=copy.deepcopy(tbl[x])
self.table=tbl
def get_flat(self,key):
s=self[key]
if isinstance(s,str):return s
return' '.join(s)
def _get_list_value_for_modification(self,key):
try:
value=self.table[key]
except KeyError:
try:value=self.parent[key]
except AttributeError:value=[]
if isinstance(value,list):
value=value[:]
else:
value=[value]
else:
if not isinstance(value,list):
value=[value]
self.table[key]=value
return value
def append_value(self,var,val):
current_value=self._get_list_value_for_modification(var)
if isinstance(val,str):
val=[val]
current_value.extend(val)
def prepend_value(self,var,val):
if isinstance(val,str):
val=[val]
self.table[var]=val+self._get_list_value_for_modification(var)
def append_unique(self,var,val):
if isinstance(val,str):
val=[val]
current_value=self._get_list_value_for_modification(var)
for x in val:
if x not in current_value:
current_value.append(x)
def get_merged_dict(self):
table_list=[]
env=self
while 1:
table_list.insert(0,env.table)
try:env=env.parent
except AttributeError:break
merged_table={}
for table in table_list:
merged_table.update(table)
return merged_table
def store(self,filename):
try:
os.makedirs(os.path.split(filename)[0])
except OSError:
pass
buf=[]
merged_table=self.get_merged_dict()
keys=list(merged_table.keys())
keys.sort()
try:
fun=ascii
except NameError:
fun=repr
for k in keys:
if k!='undo_stack':
buf.append('%s = %s\n'%(k,fun(merged_table[k])))
Utils.writef(filename,''.join(buf))
def load(self,filename):
tbl=self.table
code=Utils.readf(filename,m='rU')
for m in re_imp.finditer(code):
g=m.group
tbl[g(2)]=eval(g(3))
Logs.debug('env: %s'%str(self.table))
def update(self,d):
for k,v in d.items():
self[k]=v
def stash(self):
orig=self.table
tbl=self.table=self.table.copy()
for x in tbl.keys():
tbl[x]=copy.deepcopy(tbl[x])
self.undo_stack=self.undo_stack+[orig]
def revert(self):
self.table=self.undo_stack.pop(-1)