gnu: Add python-genshi.

 * gnu/packages/python.scm (python-genshi, python2-genshi): New variables.
 * gnu/packages/patches/python-genshi-add-support-for-python-3.4-AST.patch: New file.
 * gnu/packages/patches/python-genshi-buildable-on-python-2.7.patch: New file.
 * gnu/packages/patches/python-genshi-disable-speedups-on-python-3.3.patch: New file.
 * gnu/packages/patches/python-genshi-fix-tests-on-python-3.5.patch: New file.
 * gnu/packages/patches/python-genshi-isstring-helper.patch: New file.
 * gnu/packages/patches/python-genshi-stripping-of-unsafe-script-tags.patch: New file.
 * gnu/local.mk (dist_patch_DATA): Add them.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

1 files changed, 151 insertions, 0 deletions

diff --git a/gnu/packages/patches/python-genshi-add-support-for-python-3.4-AST.patch b/gnu/packages/patches/python-genshi-add-support-for-python-3.4-AST.patch
new file mode 100644
index 0000000000..4e40c1daa1
--- /dev/null
+++ b/gnu/packages/patches/python-genshi-add-support-for-python-3.4-AST.patch
@@ -0,0 +1,151 @@
+From 86b98a11559da7d1b21dc9b4c6b10511b9095bc4 Mon Sep 17 00:00:00 2001
+From: Simon Cross <hodgestar@gmail.com>
+Date: Sun, 16 Feb 2014 18:46:15 +0000
+Subject: [PATCH 05/16] Add support for Python 3.4 AST (support for
+ NameConstants and changes to existing to arguments node attributes).
+
+---
+ genshi/template/astutil.py | 31 ++++++++++++++++++++++++++++---
+ genshi/template/eval.py    | 34 +++++++++++++++++++---------------
+ 2 files changed, 47 insertions(+), 18 deletions(-)
+
+diff --git a/genshi/template/astutil.py b/genshi/template/astutil.py
+index a4c21c8..a3946b4 100644
+--- a/genshi/template/astutil.py
++++ b/genshi/template/astutil.py
+@@ -21,7 +21,7 @@ else:
+     def parse(source, mode):
+         return compile(source, '', mode, _ast.PyCF_ONLY_AST)
+ 
+-from genshi.compat import IS_PYTHON2
++from genshi.compat import IS_PYTHON2, isstring
+ 
+ __docformat__ = 'restructuredtext en'
+ 
+@@ -103,8 +103,13 @@ class ASTCodeGenerator(object):
+         self._new_line()
+         return self.visit(node.body)
+ 
++    # Python < 3.4
+     # arguments = (expr* args, identifier? vararg,
+     #              identifier? kwarg, expr* defaults)
++    #
++    # Python >= 3.4
++    # arguments = (arg* args, arg? vararg, arg* kwonlyargs, expr* kw_defaults,
++    #              arg? kwarg, expr* defaults)
+     def visit_arguments(self, node):
+         first = True
+         no_default_count = len(node.args) - len(node.defaults)
+@@ -122,13 +127,21 @@ class ASTCodeGenerator(object):
+                 self._write(', ')
+             else:
+                 first = False
+-            self._write('*' + node.vararg)
++            self._write('*')
++            if isstring(node.vararg):
++                self._write(node.vararg)
++            else:
++                self.visit(node.vararg)
+         if getattr(node, 'kwarg', None):
+             if not first:
+                 self._write(', ')
+             else:
+                 first = False
+-            self._write('**' + node.kwarg)
++            self._write('**')
++            if isstring(node.kwarg):
++                self._write(node.kwarg)
++            else:
++                self.visit(node.kwarg)
+ 
+     if not IS_PYTHON2:
+         # In Python 3 arguments get a special node
+@@ -724,6 +737,17 @@ class ASTCodeGenerator(object):
+     def visit_Name(self, node):
+         self._write(node.id)
+ 
++    # NameConstant(singleton value)
++    def visit_NameConstant(self, node):
++        if node.value is None:
++            self._write('None')
++        elif node.value is True:
++            self._write('True')
++        elif node.value is False:
++            self._write('False')
++        else:
++            raise Exception("Unknown NameConstant %r" % (node.value,))
++
+     # List(expr* elts, expr_context ctx)
+     def visit_List(self, node):
+         self._write('[')
+@@ -829,6 +853,7 @@ class ASTTransformer(object):
+     visit_Attribute = _clone
+     visit_Subscript = _clone
+     visit_Name = _clone
++    visit_NameConstant = _clone
+     visit_List = _clone
+     visit_Tuple = _clone
+ 
+diff --git a/genshi/template/eval.py b/genshi/template/eval.py
+index 89aec49..de4bc86 100644
+--- a/genshi/template/eval.py
++++ b/genshi/template/eval.py
+@@ -24,7 +24,8 @@ from genshi.template.astutil import ASTTransformer, ASTCodeGenerator, \
+ from genshi.template.base import TemplateRuntimeError
+ from genshi.util import flatten
+ 
+-from genshi.compat import get_code_params, build_code_chunk, IS_PYTHON2
++from genshi.compat import get_code_params, build_code_chunk, isstring, \
++                          IS_PYTHON2
+ 
+ __all__ = ['Code', 'Expression', 'Suite', 'LenientLookup', 'StrictLookup',
+            'Undefined', 'UndefinedError']
+@@ -495,28 +496,31 @@ class TemplateASTTransformer(ASTTransformer):
+     def __init__(self):
+         self.locals = [CONSTANTS]
+ 
++    def _process(self, names, node):
++        if not IS_PYTHON2 and isinstance(node, _ast.arg):
++            names.add(node.arg)
++        elif isstring(node):
++            names.add(node)
++        elif isinstance(node, _ast.Name):
++            names.add(node.id)
++        elif isinstance(node, _ast.alias):
++            names.add(node.asname or node.name)
++        elif isinstance(node, _ast.Tuple):
++            for elt in node.elts:
++                self._process(names, elt)
++
+     def _extract_names(self, node):
+         names = set()
+-        def _process(node):
+-            if not IS_PYTHON2 and isinstance(node, _ast.arg):
+-                names.add(node.arg)
+-            if isinstance(node, _ast.Name):
+-                names.add(node.id)
+-            elif isinstance(node, _ast.alias):
+-                names.add(node.asname or node.name)
+-            elif isinstance(node, _ast.Tuple):
+-                for elt in node.elts:
+-                    _process(elt)
+         if hasattr(node, 'args'):
+             for arg in node.args:
+-                _process(arg)
++                self._process(names, arg)
+             if hasattr(node, 'vararg'):
+-                names.add(node.vararg)
++                self._process(names, node.vararg)
+             if hasattr(node, 'kwarg'):
+-                names.add(node.kwarg)
++                self._process(names, node.kwarg)
+         elif hasattr(node, 'names'):
+             for elt in node.names:
+-                _process(elt)
++                self._process(names, elt)
+         return names
+ 
+     def visit_Str(self, node):
+-- 
+2.12.0
+