from __future__ import absolute_import, print_function
-from array import array
from binascii import hexlify
from traceback import print_exception
-import sys
+import os, sys
# Please see CODINGSTYLE for important exception handling guidelines
# and the rationale behind add_ex_tb(), add_ex_ctx(), etc.
if py3:
+ # pylint: disable=unused-import
+ from contextlib import nullcontext
from os import environb as environ
-
- lc_ctype = environ.get(b'LC_CTYPE')
- if lc_ctype and lc_ctype.lower() != b'iso-8859-1':
- # Because of argv, options.py, pwd, grp, and any number of other issues
- print('error: bup currently only works with ISO-8859-1, not LC_CTYPE=%s'
- % lc_ctype.decode(),
- file=sys.stderr)
- print('error: this should already have been arranged, so indicates a bug',
- file=sys.stderr)
- sys.exit(2)
-
- from os import fsencode
+ from os import fsdecode, fsencode
from shlex import quote
+ # pylint: disable=undefined-variable
+ # (for python2 looking here)
+ ModuleNotFoundError = ModuleNotFoundError
+ input = input
range = range
str_type = str
int_types = (int,)
"""Return hex string (not bytes as with hexlify) representation of b."""
return b.hex()
+ def reraise(ex):
+ raise ex.with_traceback(sys.exc_info()[2])
+
def add_ex_tb(ex):
"""Do nothing (already handled by Python 3 infrastructure)."""
return ex
"""Do nothing (already handled by Python 3 infrastructure)."""
return ex
+ class pending_raise:
+ """If rethrow is true, rethrow ex (if any), unless the body throws.
+
+ (Supports Python 2 compatibility.)
+
+ """
+ def __init__(self, ex, rethrow=True):
+ self.ex = ex
+ self.rethrow = rethrow
+ def __enter__(self):
+ return None
+ def __exit__(self, exc_type, exc_value, traceback):
+ if not exc_type and self.ex and self.rethrow:
+ raise self.ex
+
def items(x):
return x.items()
def bytes_from_uint(i):
return bytes((i,))
+ def bytes_from_byte(b): # python > 2: b[3] returns ord('x'), not b'x'
+ return bytes((b,))
+
byte_int = lambda x: x
def buffer(object, offset=None, size=None):
return memoryview(object)[offset:]
return memoryview(object)
- def join_bytes(*items):
- """Return the concatenated bytes or memoryview arguments as bytes."""
- return b''.join(items)
+ def getcwd():
+ return fsencode(os.getcwd())
else: # Python 2
+ from contextlib import contextmanager
+
+ ModuleNotFoundError = ImportError
+
+ def fsdecode(x):
+ return x
+
def fsencode(x):
return x
from pipes import quote
- from os import environ
+ # pylint: disable=unused-import
+ from os import environ, getcwd
+
+ # pylint: disable=unused-import
+ from bup.py2raise import reraise
+
+ @contextmanager
+ def nullcontext(enter_result=None):
+ yield enter_result
+
+ # on py3 this causes errors, obviously
+ # pylint: disable=undefined-variable
+ input = raw_input
+ # pylint: disable=undefined-variable
range = xrange
+ # pylint: disable=undefined-variable
str_type = basestring
+ # pylint: disable=undefined-variable
int_types = (int, long)
hexstr = hexlify
ex.__context__ = context_ex
return ex
+ class pending_raise:
+ """If rethrow is true, rethrow ex (if any), unless the body throws.
+
+ If the body does throw, make any provided ex the __context__
+ of the newer exception (assuming there's no existing
+ __context__). Ensure the exceptions have __tracebacks__.
+ (Supports Python 2 compatibility.)
+
+ """
+ def __init__(self, ex, rethrow=True):
+ self.ex = ex
+ self.rethrow = rethrow
+ def __enter__(self):
+ if self.ex:
+ add_ex_tb(self.ex)
+ def __exit__(self, exc_type, exc_value, traceback):
+ if exc_value:
+ if self.ex:
+ add_ex_tb(exc_value)
+ add_ex_ctx(exc_value, self.ex)
+ return
+ if self.rethrow and self.ex:
+ raise self.ex
+
def dump_traceback(ex):
stack = [ex]
next_ex = getattr(ex, '__context__', None)
"""Return the original bytes passed to main() for an argv argument."""
return x
- def bytes_from_uint(i):
- return chr(i)
+ bytes_from_uint = chr
+
+ def bytes_from_byte(b):
+ return b
byte_int = ord
buffer = buffer
- def join_bytes(x, y):
- """Return the concatenated bytes or buffer arguments as bytes."""
- if type(x) == buffer:
- assert type(y) in (bytes, buffer)
- return x + y
- assert type(x) == bytes
- if type(y) == bytes:
- return b''.join((x, y))
- assert type(y) in (bytes, buffer)
- return buffer(x) + y
+try:
+ import bup_main
+except ModuleNotFoundError:
+ bup_main = None
+
+if bup_main:
+ def get_argvb():
+ "Return a new list containing the current process argv bytes."
+ return bup_main.argv()
+ if py3:
+ def get_argv():
+ "Return a new list containing the current process argv strings."
+ return [x.decode(errors='surrogateescape') for x in bup_main.argv()]
+ else:
+ def get_argv():
+ return bup_main.argv()
+else:
+ def get_argvb():
+ raise Exception('get_argvb requires the bup_main module');
+ def get_argv():
+ raise Exception('get_argv requires the bup_main module');
def wrap_main(main):
"""Run main() and raise a SystemExit with the return value if it
projects / bup.git / blobdiff