x11/xcb-proto: fix build with pathon3

Add upstream patches to fix build/packaging with python3 as default after
the recent update. python3 is not default, so no PORTREVISION bump is required.

PR:		214279
Submitted by:	John W. O'Brien <john@saltant.com>
Approved by:	portmgr (just-fix-it blanket)

3 files changed, 255 insertions, 1 deletions

diff --git a/x11/xcb-proto/Makefile b/x11/xcb-proto/Makefile
index 71a82edcf6b5..3bfc03c816c2 100644
--- a/x11/xcb-proto/Makefile
+++ b/x11/xcb-proto/Makefile
@@ -14,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/COPYING
 
 USE_GNOME=	libxml2:build
 XORG_CAT=	proto
-USES=		python
+USES=		python:2.7+
 USE_PYTHON=	py3kplist
 NO_ARCH=	yes
 
diff --git a/x11/xcb-proto/files/patch-xcbgen_align.py b/x11/xcb-proto/files/patch-xcbgen_align.py
new file mode 100644
index 000000000000..8556f04ca58b
--- /dev/null
+++ b/x11/xcb-proto/files/patch-xcbgen_align.py
@@ -0,0 +1,197 @@
+Obtained from:
+
+https://cgit.freedesktop.org/xcb/proto/commit/xcbgen/align.py?id=ea7a3ac6c658164690e0febb55f4467cb9e0bcac
+
+--- xcbgen/align.py.orig	2016-05-01 07:44:48 UTC
++++ xcbgen/align.py
+@@ -16,12 +16,12 @@ class Alignment(object):
+         return self.align == other.align and self.offset == other.offset
+ 
+     def __str__(self):
+-	return "(align=%d, offset=%d)" % (self.align, self.offset)
++        return "(align=%d, offset=%d)" % (self.align, self.offset)
+ 
+     @staticmethod
+     def for_primitive_type(size):
+-	# compute the required start_alignment based on the size of the type
+-	if size % 8 == 0:
++        # compute the required start_alignment based on the size of the type
++        if size % 8 == 0:
+             # do 8-byte primitives require 8-byte alignment in X11?
+             return Alignment(8,0)
+         elif size % 4 == 0:
+@@ -33,7 +33,7 @@ class Alignment(object):
+ 
+ 
+     def align_after_fixed_size(self, size):
+-	new_offset = (self.offset + size) % self.align
++        new_offset = (self.offset + size) % self.align
+         return Alignment(self.align, new_offset)
+ 
+ 
+@@ -41,7 +41,7 @@ class Alignment(object):
+         '''
+         Assuming the given external_align, checks whether
+         self is fulfilled for all cases.
+-	Returns True if yes, False otherwise.
++        Returns True if yes, False otherwise.
+         '''
+         if self.align == 1 and self.offset == 0:
+             # alignment 1 with offset 0 is always fulfilled
+@@ -55,9 +55,9 @@ class Alignment(object):
+             # the external align guarantees less alignment -> not guaranteed
+             return False
+ 
+-	if external_align.align % self.align != 0:
++        if external_align.align % self.align != 0:
+             # the external align cannot be divided by our align
+-	    # -> not guaranteed
++            # -> not guaranteed
+             # (this can only happen if there are alignments that are not
+             # a power of 2, which is highly discouraged. But better be
+             # safe and check for it)
+@@ -72,7 +72,7 @@ class Alignment(object):
+ 
+     def combine_with(self, other):
+         # returns the alignment that is guaranteed when
+-	# both, self or other, can happen
++        # both, self or other, can happen
+         new_align = gcd(self.align, other.align)
+         new_offset_candidate1 = self.offset % new_align
+         new_offset_candidate2 = other.offset % new_align
+@@ -83,8 +83,8 @@ class Alignment(object):
+             new_align = gcd(new_align, offset_diff)
+             new_offset_candidate1 = self.offset % new_align
+             new_offset_candidate2 = other.offset % new_align
+-	    assert new_offset_candidate1 == new_offset_candidate2
+-	    new_offset = new_offset_candidate1
++            assert new_offset_candidate1 == new_offset_candidate2
++            new_offset = new_offset_candidate1
+         # return the result
+         return Alignment(new_align, new_offset)
+ 
+@@ -92,44 +92,44 @@ class Alignment(object):
+ class AlignmentLog(object):
+ 
+     def __init__(self):
+-	self.ok_list = []
+-	self.fail_list = []
+-	self.verbosity = 1
++        self.ok_list = []
++        self.fail_list = []
++        self.verbosity = 1
+ 
+     def __str__(self):
+-	result = ""
++        result = ""
+ 
+-	# output the OK-list
+-	for (align_before, field_name, type_obj, callstack, align_after) in self.ok_list:
+-	    stacksize = len(callstack)
++        # output the OK-list
++        for (align_before, field_name, type_obj, callstack, align_after) in self.ok_list:
++            stacksize = len(callstack)
+             indent = '  ' * stacksize
+-	    if self.ok_callstack_is_relevant(callstack):
++            if self.ok_callstack_is_relevant(callstack):
+                 if field_name is None or field_name == "":
+-	            result += ("    %sok: %s:\n\t%sbefore: %s, after: %s\n"
+-		        % (indent, str(type_obj), indent, str(align_before), str(align_after)))
+-	        else:
+-		    result += ("    %sok: field \"%s\" in %s:\n\t%sbefore: %s, after: %s\n"
+-		        % (indent, str(field_name), str(type_obj),
+-		           indent, str(align_before), str(align_after)))
++                    result += ("    %sok: %s:\n\t%sbefore: %s, after: %s\n"
++                        % (indent, str(type_obj), indent, str(align_before), str(align_after)))
++                else:
++                    result += ("    %sok: field \"%s\" in %s:\n\t%sbefore: %s, after: %s\n"
++                        % (indent, str(field_name), str(type_obj),
++                           indent, str(align_before), str(align_after)))
+                 if self.verbosity >= 1:
+-		    result += self.callstack_to_str(indent, callstack)
++                    result += self.callstack_to_str(indent, callstack)
+ 
+-	# output the fail-list
+-	for (align_before, field_name, type_obj, callstack, reason) in self.fail_list:
+-	    stacksize = len(callstack)
++        # output the fail-list
++        for (align_before, field_name, type_obj, callstack, reason) in self.fail_list:
++            stacksize = len(callstack)
+             indent = '  ' * stacksize
+-	    if field_name is None or field_name == "":
+-	        result += ("    %sfail: align %s is incompatible with\n\t%s%s\n\t%sReason: %s\n"
+-		    % (indent, str(align_before), indent, str(type_obj), indent, reason))
+-	    else:
+-		result += ("    %sfail: align %s is incompatible with\n\t%sfield \"%s\" in %s\n\t%sReason: %s\n"
+-		    % (indent, str(align_before), indent, str(field_name), str(type_obj), indent, reason))
++            if field_name is None or field_name == "":
++                result += ("    %sfail: align %s is incompatible with\n\t%s%s\n\t%sReason: %s\n"
++                    % (indent, str(align_before), indent, str(type_obj), indent, reason))
++            else:
++                result += ("    %sfail: align %s is incompatible with\n\t%sfield \"%s\" in %s\n\t%sReason: %s\n"
++                    % (indent, str(align_before), indent, str(field_name), str(type_obj), indent, reason))
+ 
+             if self.verbosity >= 1:
+-	        result += self.callstack_to_str(indent, callstack)
++                result += self.callstack_to_str(indent, callstack)
+ 
+ 
+-	return result
++        return result
+ 
+ 
+     def callstack_to_str(self, indent, callstack):
+@@ -137,41 +137,41 @@ class AlignmentLog(object):
+         for stack_elem in callstack:
+             result += "\t  %s%s\n" % (indent, str(stack_elem))
+         result += "\t%s]\n" % indent
+-	return result
++        return result
+ 
+ 
+     def ok_callstack_is_relevant(self, ok_callstack):
+         # determine whether an ok callstack is relevant for logging
+-	if self.verbosity >= 2:
+-	    return True
++        if self.verbosity >= 2:
++            return True
+ 
+         # empty callstacks are always relevant
+-	if len(ok_callstack) == 0:
++        if len(ok_callstack) == 0:
+             return True
+ 
+-	# check whether the ok_callstack is a subset or equal to a fail_callstack
++        # check whether the ok_callstack is a subset or equal to a fail_callstack
+         for (align_before, field_name, type_obj, fail_callstack, reason) in self.fail_list:
+             if len(ok_callstack) <= len(fail_callstack):
+                 zipped = zip(ok_callstack, fail_callstack[:len(ok_callstack)])
+-		is_subset = all([i == j for i, j in zipped])
+-		if is_subset:
++                is_subset = all([i == j for i, j in zipped])
++                if is_subset:
+                     return True
+ 
+         return False
+ 
+ 
+     def ok(self, align_before, field_name, type_obj, callstack, align_after):
+-	self.ok_list.append((align_before, field_name, type_obj, callstack, align_after))
++        self.ok_list.append((align_before, field_name, type_obj, callstack, align_after))
+ 
+     def fail(self, align_before, field_name, type_obj, callstack, reason):
+-	self.fail_list.append((align_before, field_name, type_obj, callstack, reason))
++        self.fail_list.append((align_before, field_name, type_obj, callstack, reason))
+ 
+     def append(self, other):
+-	self.ok_list.extend(other.ok_list)
+-	self.fail_list.extend(other.fail_list)
++        self.ok_list.extend(other.ok_list)
++        self.fail_list.extend(other.fail_list)
+ 
+     def ok_count(self):
+-	return len(self.ok_list)
++        return len(self.ok_list)
+ 
+ 
+ 
diff --git a/x11/xcb-proto/files/patch-xcbgen_xtypes.py b/x11/xcb-proto/files/patch-xcbgen_xtypes.py
new file mode 100644
index 000000000000..859ce126b1f1
--- /dev/null
+++ b/x11/xcb-proto/files/patch-xcbgen_xtypes.py
@@ -0,0 +1,57 @@
+Obtained from:
+
+https://cgit.freedesktop.org/xcb/proto/commit/xcbgen/xtypes.py?id=bea5e1c85bdc0950913790364e18228f20395a3d
+
+--- xcbgen/xtypes.py.orig	2016-05-01 07:44:48 UTC
++++ xcbgen/xtypes.py
+@@ -501,7 +501,7 @@ class ComplexType(Type):
+                 int(required_start_align_element.get('align', "4"), 0),
+                 int(required_start_align_element.get('offset', "0"), 0))
+             if verbose_align_log:
+-                print "Explicit start-align for %s: %s\n" % (self, self.required_start_align)
++                print ("Explicit start-align for %s: %s\n" % (self, self.required_start_align))
+ 
+     def resolve(self, module):
+         if self.resolved:
+@@ -592,7 +592,7 @@ class ComplexType(Type):
+                 if verbose_align_log:
+                     print ("calc_required_start_align: %s has start-align %s"
+                         % (str(self), str(self.required_start_align)))
+-                    print "Details:\n" + str(log)
++                    print ("Details:\n" + str(log))
+                 if self.required_start_align.offset != 0:
+                     print (("WARNING: %s\n\thas start-align with non-zero offset: %s"
+                         + "\n\tsuggest to add explicit definition with:"
+@@ -619,12 +619,12 @@ class ComplexType(Type):
+             for offset in range(0,align):
+                 align_candidate = Alignment(align, offset)
+                 if verbose_align_log:
+-                    print "trying %s for %s" % (str(align_candidate), str(self))
++                    print ("trying %s for %s" % (str(align_candidate), str(self)))
+                 my_log = AlignmentLog()
+                 if self.is_possible_start_align(align_candidate, callstack, my_log):
+                     log.append(my_log)
+                     if verbose_align_log:
+-                        print "found start-align %s for %s" % (str(align_candidate), str(self))
++                        print ("found start-align %s for %s" % (str(align_candidate), str(self)))
+                     return align_candidate
+                 else:
+                     my_ok_count = my_log.ok_count()
+@@ -641,7 +641,7 @@ class ComplexType(Type):
+         # none of the candidates applies
+         # this type has illegal internal aligns for all possible start_aligns
+         if verbose_align_log:
+-            print "didn't find start-align for %s" % str(self)
++            print ("didn't find start-align for %s" % str(self))
+         log.append(best_log)
+         return None
+ 
+@@ -900,7 +900,7 @@ class SwitchType(ComplexType):
+     # aux function for unchecked_get_alignment_after
+     def get_align_for_selected_case_field(self, case_field, start_align, callstack, log):
+         if verbose_align_log:
+-            print "get_align_for_selected_case_field: %s, case_field = %s" % (str(self), str(case_field))
++            print ("get_align_for_selected_case_field: %s, case_field = %s" % (str(self), str(case_field)))
+         total_align = start_align
+         for field in self.bitcases:
+             my_callstack = callstack[:]