cefpython/src/helpers.pyx at cefpython53 · pythonthings/cefpython · GitHub

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include "cefpython.pyx"

import os

import platform

import re

import traceback

import time

import codecs

cpdef str GetModuleDirectory():

"""Get path to the cefpython module (so/pyd)."""

if platform.system() == "Linux" and os.getenv("CEFPYTHON3_PATH"):

# cefpython3 package __init__.py sets CEFPYTHON3_PATH.

# When cefpython3 is installed as debian package, this

# env variable is the only way of getting valid path.

return os.getenv("CEFPYTHON3_PATH")

if hasattr(sys, "frozen"):

path = os.path.dirname(sys.executable)

elif "__file__" in globals():

path = os.path.dirname(os.path.realpath(__file__))

else:

path = os.getcwd()

if platform.system() == "Windows":

path = re.sub(r"[/\\]+", re.escape(os.sep), path)

path = re.sub(r"[/\\]+$", "", path)

return os.path.abspath(path)

g_GetAppPath_dir = None

cpdef str GetAppPath(file=None):

"""Get application path."""

# On Windows after downloading file and calling Browser.GoForward(),

# current working directory is set to %UserProfile%.

# Calling os.path.dirname(os.path.realpath(__file__))

# returns for eg. "C:\Users\user\Downloads". A solution

# is to cache path on first call.

if not g_GetAppPath_dir:

if hasattr(sys, "frozen"):

adir = os.path.dirname(sys.executable)

else:

adir = os.getcwd()

global g_GetAppPath_dir

g_GetAppPath_dir = adir

# If file is None return current directory without trailing slash.

if file is None:

file = ""

# Only when relative path.

if not file.startswith("/") and not file.startswith("\\") and (

not re.search(r"^[\w-]+:", file)):

path = g_GetAppPath_dir + os.sep + file

if platform.system() == "Windows":

path = re.sub(r"[/\\]+", re.escape(os.sep), path)

path = re.sub(r"[/\\]+$", "", path)

return path

return str(file)

cpdef py_void ExceptHook(excType, excValue, traceObject):

"""Global except hook to exit app cleanly on error."""

# This hook does the following: in case of exception write it to

# the "error.log" file, display it to the console, shutdown CEF

# and exit application immediately by ignoring "finally" (_exit()).

print("[CEF Python] ExceptHook: catched exception, will shutdown CEF now")

QuitMessageLoop()

Shutdown()

print("[CEF Python] ExceptHook: see the catched exception below:")

errorMsg = "".join(traceback.format_exception(excType, excValue,

traceObject))

errorFile = GetAppPath("error.log")

try:

appEncoding = g_applicationSettings["string_encoding"]

except:

appEncoding = "utf-8"

if type(errorMsg) == bytes:

errorMsg = errorMsg.decode(encoding=appEncoding, errors="replace")

try:

with codecs.open(errorFile, mode="a", encoding=appEncoding) as fp:

fp.write("\n[%s] %s\n" % (

time.strftime("%Y-%m-%d %H:%M:%S"), errorMsg))

except:

print("[CEF Python] WARNING: failed writing to error file: %s" % (

errorFile))

# Convert error message to ascii before printing, otherwise

# you may get error like this:

# | UnicodeEncodeError: 'charmap' codec can't encode characters

errorMsg = errorMsg.encode("ascii", errors="replace")

errorMsg = errorMsg.decode("ascii", errors="replace")

print("\n"+errorMsg)

# noinspection PyProtectedMember

os._exit(1)

cefpython/src/helpers.pyx at cefpython53 · pythonthings/cefpython · GitHub

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