From baee03c569c91b745a1e025660b19a718db16e7d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Thu, 28 Sep 2017 12:18:58 +0200
Subject: New upstream version 3.0.0

---
 src/engine/SCons/Subst.py | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

(limited to 'src/engine/SCons/Subst.py')

diff --git a/src/engine/SCons/Subst.py b/src/engine/SCons/Subst.py
index 28445a3..90c12a0 100644
--- a/src/engine/SCons/Subst.py
+++ b/src/engine/SCons/Subst.py
@@ -5,7 +5,7 @@ SCons string substitution.
 """
 
 #
-# Copyright (c) 2001 - 2016 The SCons Foundation
+# Copyright (c) 2001 - 2017 The SCons Foundation
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -26,7 +26,7 @@ SCons string substitution.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Subst.py rel_2.5.1:3735:9dc6cee5c168 2016/11/03 14:02:02 bdbaddog"
+__revision__ = "src/engine/SCons/Subst.py rel_3.0.0:4395:8972f6a2f699 2017/09/18 12:59:24 bdbaddog"
 
 import collections
 import re
@@ -338,24 +338,28 @@ SUBST_RAW = 1
 SUBST_SIG = 2
 
 _rm = re.compile(r'\$[()]')
-_remove = re.compile(r'\$\([^\$]*(\$[^\)][^\$]*)*\$\)')
+_rm_split = re.compile(r'(\$[()])')
 
 # Indexed by the SUBST_* constants above.
-_regex_remove = [ _rm, None, _remove ]
+_regex_remove = [ _rm, None, _rm_split ]
 
 def _rm_list(list):
     return [l for l in list if not l in ('$(', '$)')]
 
 def _remove_list(list):
     result = []
-    do_append = result.append
+    depth = 0
     for l in list:
         if l == '$(':
-            do_append = lambda x: None
+            depth += 1
         elif l == '$)':
-            do_append = result.append
-        else:
-            do_append(l)
+            depth -= 1
+            if depth < 0:
+                break
+        elif depth == 0:
+            result.append(l)
+    if depth != 0:
+        return None
     return result
 
 # Indexed by the SUBST_* constants above.
@@ -438,14 +442,14 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
                     return s
                 else:
                     key = s[1:]
-                    if key[0] == '{' or key.find('.') >= 0:
+                    if key[0] == '{' or '.' in key:
                         if key[0] == '{':
                             key = key[1:-1]
                         try:
                             s = eval(key, self.gvars, lvars)
                         except KeyboardInterrupt:
                             raise
-                        except Exception, e:
+                        except Exception as e:
                             if e.__class__ in AllowableExceptions:
                                 return ''
                             raise_exception(e, lvars['TARGETS'], s)
@@ -562,12 +566,19 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
     except KeyError:
         pass
 
+    res = result
     if is_String(result):
         # Remove $(-$) pairs and any stuff in between,
         # if that's appropriate.
         remove = _regex_remove[mode]
         if remove:
-            result = remove.sub('', result)
+            if mode == SUBST_SIG:
+                result = _list_remove[mode](remove.split(result))
+                if result is None:
+                    raise SCons.Errors.UserError("Unbalanced $(/$) in: " + res)
+                result = ' '.join(result)
+            else:
+                result = remove.sub('', result)
         if mode != SUBST_RAW:
             # Compress strings of white space characters into
             # a single space.
@@ -576,6 +587,8 @@ def scons_subst(strSubst, env, mode=SUBST_RAW, target=None, source=None, gvars={
         remove = _list_remove[mode]
         if remove:
             result = remove(result)
+            if result is None:
+                raise SCons.Errors.UserError("Unbalanced $(/$) in: " + str(res))
 
     return result
 
@@ -652,7 +665,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, gv
                             s = eval(key, self.gvars, lvars)
                         except KeyboardInterrupt:
                             raise
-                        except Exception, e:
+                        except Exception as e:
                             if e.__class__ in AllowableExceptions:
                                 return
                             raise_exception(e, lvars['TARGETS'], s)
-- 
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