Update Emscripten tools to v5.0.3 state

auditwheel_emscripten/emscripten_tools/colored_logger.py

@@ -0,0 +1,116 @@
+# Copyright 2018 The Emscripten Authors.  All rights reserved.
+# Emscripten is available under two separate licenses, the MIT license and the
+# University of Illinois/NCSA Open Source License.  Both these licenses can be
+# found in the LICENSE file.
+
+"""Enables colored logger just by importing this module
+
+Also, provides utility functions to use ANSI colors in the terminal.
+"""
+
+import ctypes
+import logging
+import sys
+from functools import wraps
+
+# ANSI colors
+RED = 1
+GREEN = 2
+YELLOW = 3
+BLUE = 4
+MAGENTA = 5
+CYAN = 6
+WHITE = 7
+
+color_enabled = False
+
+
+def output_color(color):
+  if color_enabled:
+    return '\033[3%sm' % color
+  return ''
+
+
+def bold():
+  if color_enabled:
+    return '\033[1m'
+  return ''
+
+
+def reset_color():
+  if color_enabled:
+    return '\033[0m'
+  return ''
+
+
+def with_bold_color(color, string):
+  return output_color(color) + bold() + string + reset_color()
+
+
+def with_color(color, string):
+  return output_color(color) + string + reset_color()
+
+
+def with_bold(string):
+  return bold() + string + reset_color()
+
+
+def ansi_color_available():
+  if not sys.platform.startswith('win'):
+    return sys.stderr.isatty()
+
+  # Constants from the Windows API
+  STD_OUTPUT_HANDLE = -11
+  ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004
+
+  kernel32 = ctypes.windll.kernel32
+  stdout_handle = kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
+
+  console_mode = ctypes.c_uint()
+  # Attempt to enable ANSI color processing (ENABLE_VIRTUAL_TERMINAL_PROCESSING).
+  # Assume that failure of either GetConsoleMode or SetConsoleMode means that stdout
+  # is not attached to a terminal or that the terminal does not support this mode.
+  if kernel32.GetConsoleMode(stdout_handle, ctypes.byref(console_mode)) == 0:
+    return False
+  if kernel32.SetConsoleMode(stdout_handle, console_mode.value | ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0:
+    return False
+
+  return True
+
+
+def add_coloring_to_emit_ansi(fn):
+  # add methods we need to the class
+  @wraps(fn)
+  def new(*args):
+    levelno = args[1].levelno
+    color = None
+    if levelno >= 40:
+      color = RED
+    elif levelno >= 30:
+      color = YELLOW
+    elif levelno >= 20:
+      color = GREEN
+    elif levelno >= 10:
+      color = MAGENTA
+    if color:
+      args[1].msg = with_color(color, args[1].msg)
+    return fn(*args)
+
+  new.orig_func = fn
+  return new
+
+
+def enable(force=False):
+  global color_enabled
+  if not color_enabled:
+    if ansi_color_available() or force:
+      logging.StreamHandler.emit = add_coloring_to_emit_ansi(logging.StreamHandler.emit)
+      color_enabled = True
+
+
+def disable():
+  global color_enabled
+  if color_enabled:
+    if hasattr(logging.StreamHandler.emit, 'orig_func'):
+      logging.StreamHandler.emit = logging.StreamHandler.emit.orig_func
+    color_enabled = False