Python 3 support (#755)

* Python 3 support

* Fix import_vs_environment in xenia-build

* Drop support for Python 2

* Fix CIs and xb.bat

* Require Python3.4+ because of Ubuntu Trusty

* popen.communicate returns bytes instead of string

* Useful info in travis

* universal_newlines should be True

* Changed shebang to python 3

* Python 3 shebang fix

* Clang python 3 shebang fix

.travis.yml

@@ -33,6 +33,7 @@ addons:
       - clang-3.8
       - clang-format-3.8
       - libc++-dev
+      - python3
 
 git:
   # We handle submodules ourselves in xenia-build setup.
@@ -43,6 +44,7 @@ before_script:
   - export CC=clang-3.8
   # Dump useful info.
   - $CXX --version
+  - python3 --version
   # Prepare environment (pull dependencies, build tools).
   - travis_retry ./xenia-build setup
 

third_party/clang-format/clang-format-diff.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 #===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
 #

third_party/clang-format/git-clang-format

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 #===- git-clang-format - ClangFormat Git Integration ---------*- python -*--===#
 #

tools/build/premake

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3 
 
 # Copyright 2015 Ben Vanik. All Rights Reserved.
 

tools/diff.py

@@ -1,3 +1,7 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""python diff.py file1 file2 diff"""
+
 import difflib
 import sys
 
@@ -5,4 +9,4 @@ diff = difflib.unified_diff(
     open(sys.argv[1]).readlines(),
     open(sys.argv[2]).readlines())
 with open(sys.argv[3], 'w') as f:
-  f.write(''.join(diff))
+    f.write(''.join(diff))

tools/gpu-trace-diff

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3 
 
 # Copyright 2015 Ben Vanik. All Rights Reserved.
 

tools/ppc-table-gen

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3 
 
 # Copyright 2015 Ben Vanik & shuffle2. All Rights Reserved.
 

xb.bat

@@ -10,8 +10,8 @@ REM ============================================================================
 CALL :check_python
 IF %_RESULT% NEQ 0 (
   ECHO.
-  ECHO Python 2.7 must be installed and on PATH:
+  ECHO Python 3.4+ must be installed and on PATH:
-  ECHO https://www.python.org/ftp/python/2.7.13/python-2.7.13.msi
+  ECHO https://www.python.org/
   GOTO :exit_error
 )
 
@@ -31,13 +31,19 @@ REM ============================================================================
 :check_python
 SETLOCAL
 SET FOUND_PYTHON_EXE=""
-1>NUL 2>NUL CMD /c where python2
+1>NUL 2>NUL CMD /c where python3
 IF NOT ERRORLEVEL 1 (
   ECHO FOUND PYTHON 2
-  SET FOUND_PYTHON_EXE=python2
+  SET FOUND_PYTHON_EXE=python3
 )
 IF %FOUND_PYTHON_EXE% EQU "" (
-  IF EXIST c:\\python27\\python.exe SET FOUND_PYTHON_EXE=C:\\python27\\python.exe
+  IF EXIST c:\\python34\\python.exe SET FOUND_PYTHON_EXE=C:\\python34\\python.exe
+)
+IF %FOUND_PYTHON_EXE% EQU "" (
+  IF EXIST c:\\python35\\python.exe SET FOUND_PYTHON_EXE=C:\\python35\\python.exe
+)
+IF %FOUND_PYTHON_EXE% EQU "" (
+  IF EXIST c:\\python36\\python.exe SET FOUND_PYTHON_EXE=C:\\python36\\python.exe
 )
 IF %FOUND_PYTHON_EXE% EQU "" (
   1>NUL 2>NUL CMD /c where python
@@ -47,13 +53,13 @@ IF %FOUND_PYTHON_EXE% EQU "" (
 )
 IF %FOUND_PYTHON_EXE% EQU "" (
   ECHO ERROR: no Python executable found on PATH.
-  ECHO Make sure you can run 'python' or 'python2' in a Command Prompt.
+  ECHO Make sure you can run 'python' or 'python3' in a Command Prompt.
   ENDLOCAL & SET _RESULT=1
   GOTO :eof
 )
-CMD /C %FOUND_PYTHON_EXE% -c "import sys; sys.exit(1 if not sys.version_info[:2] == (2, 7) else 0)"
+CMD /C %FOUND_PYTHON_EXE% -c "import sys; sys.exit(1 if not sys.version_info[:2] >= (3, 4) else 0)"
 IF %ERRORLEVEL% NEQ 0 (
-  ECHO ERROR: Python version mismatch - not 2.7
+  ECHO ERROR: Python version mismatch - not 3.4+
   ENDLOCAL & SET _RESULT=1
   GOTO :eof
 )