Source.Python/addons/source-python/Python3/_apple_support.py at master · waldotf/Source.Python · GitHub

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import io

import sys

def init_streams(log_write, stdout_level, stderr_level):

# Redirect stdout and stderr to the Apple system log. This method is

# invoked by init_apple_streams() (initconfig.c) if config->use_system_logger

# is enabled.

sys.stdout = SystemLog(log_write, stdout_level, errors=sys.stderr.errors)

sys.stderr = SystemLog(log_write, stderr_level, errors=sys.stderr.errors)

class SystemLog(io.TextIOWrapper):

def __init__(self, log_write, level, **kwargs):

kwargs.setdefault("encoding", "UTF-8")

kwargs.setdefault("line_buffering", True)

super().__init__(LogStream(log_write, level), **kwargs)

def __repr__(self):

return f"<SystemLog (level {self.buffer.level})>"

def write(self, s):

if not isinstance(s, str):

raise TypeError(

f"write() argument must be str, not {type(s).__name__}")

# In case `s` is a str subclass that writes itself to stdout or stderr

# when we call its methods, convert it to an actual str.

s = str.__str__(s)

# We want to emit one log message per line, so split

# the string before sending it to the superclass.

for line in s.splitlines(keepends=True):

super().write(line)

return len(s)

class LogStream(io.RawIOBase):

def __init__(self, log_write, level):

self.log_write = log_write

self.level = level

def __repr__(self):

return f"<LogStream (level {self.level!r})>"

def writable(self):

return True

def write(self, b):

if type(b) is not bytes:

try:

b = bytes(memoryview(b))

except TypeError:

raise TypeError(

f"write() argument must be bytes-like, not {type(b).__name__}"

) from None

# Writing an empty string to the stream should have no effect.

if b:

# Encode null bytes using "modified UTF-8" to avoid truncating the

# message. This should not affect the return value, as the caller

# may be expecting it to match the length of the input.

self.log_write(self.level, b.replace(b"\x00", b"\xc0\x80"))

return len(b)

Source.Python/addons/source-python/Python3/_apple_support.py at master · waldotf/Source.Python · GitHub

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