return True
done = True
- original_stderr = sys.stderr
import codecs, re
- from ctypes import WINFUNCTYPE, windll, POINTER, byref, c_int
- from ctypes.wintypes import BOOL, HANDLE, DWORD, LPWSTR, LPCWSTR, LPVOID
+ from ctypes import WINFUNCTYPE, WinError, windll, POINTER, byref, c_int, get_last_error
+ from ctypes.wintypes import BOOL, HANDLE, DWORD, UINT, LPWSTR, LPCWSTR, LPVOID
+
from allmydata.util import log
from allmydata.util.encodingutil import canonical_encoding
+ # <https://msdn.microsoft.com/en-us/library/ms680621%28VS.85%29.aspx>
+ SetErrorMode = WINFUNCTYPE(
+ UINT, UINT,
+ use_last_error=True
+ )(("SetErrorMode", windll.kernel32))
+
+ SEM_FAILCRITICALERRORS = 0x0001
+ SEM_NOOPENFILEERRORBOX = 0x8000
+
+ SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX)
+
+ original_stderr = sys.stderr
+
+ # If any exception occurs in this code, we'll probably try to print it on stderr,
+ # which makes for frustrating debugging if stderr is directed to our wrapper.
+ # So be paranoid about catching errors and reporting them to original_stderr,
+ # so that we can at least see them.
+ def _complain(message):
+ print >>original_stderr, isinstance(message, str) and message or repr(message)
+ log.msg(message, level=log.WEIRD)
+
# Work around <http://bugs.python.org/issue6058>.
codecs.register(lambda name: name == 'cp65001' and codecs.lookup('utf-8') or None)
# Make Unicode console output work independently of the current code page.
# This also fixes <http://bugs.python.org/issue1602>.
- # Credit to Michael Kaplan <http://blogs.msdn.com/b/michkap/archive/2010/04/07/9989346.aspx>
+ # Credit to Michael Kaplan <https://blogs.msdn.com/b/michkap/archive/2010/04/07/9989346.aspx>
# and TZOmegaTZIOY
# <http://stackoverflow.com/questions/878972/windows-cmd-encoding-change-causes-python-crash/1432462#1432462>.
try:
- # <http://msdn.microsoft.com/en-us/library/ms683231(VS.85).aspx>
+ # <https://msdn.microsoft.com/en-us/library/ms683231(VS.85).aspx>
# HANDLE WINAPI GetStdHandle(DWORD nStdHandle);
# returns INVALID_HANDLE_VALUE, NULL, or a valid handle
#
- # <http://msdn.microsoft.com/en-us/library/aa364960(VS.85).aspx>
+ # <https://msdn.microsoft.com/en-us/library/aa364960(VS.85).aspx>
# DWORD WINAPI GetFileType(DWORD hFile);
#
- # <http://msdn.microsoft.com/en-us/library/ms683167(VS.85).aspx>
+ # <https://msdn.microsoft.com/en-us/library/ms683167(VS.85).aspx>
# BOOL WINAPI GetConsoleMode(HANDLE hConsole, LPDWORD lpMode);
- GetStdHandle = WINFUNCTYPE(HANDLE, DWORD)(("GetStdHandle", windll.kernel32))
+ GetStdHandle = WINFUNCTYPE(
+ HANDLE, DWORD,
+ use_last_error=True
+ )(("GetStdHandle", windll.kernel32))
+
STD_OUTPUT_HANDLE = DWORD(-11)
STD_ERROR_HANDLE = DWORD(-12)
- GetFileType = WINFUNCTYPE(DWORD, DWORD)(("GetFileType", windll.kernel32))
+
+ GetFileType = WINFUNCTYPE(
+ DWORD, DWORD,
+ use_last_error=True
+ )(("GetFileType", windll.kernel32))
+
FILE_TYPE_CHAR = 0x0002
FILE_TYPE_REMOTE = 0x8000
- GetConsoleMode = WINFUNCTYPE(BOOL, HANDLE, POINTER(DWORD))(("GetConsoleMode", windll.kernel32))
+
+ GetConsoleMode = WINFUNCTYPE(
+ BOOL, HANDLE, POINTER(DWORD),
+ use_last_error=True
+ )(("GetConsoleMode", windll.kernel32))
+
INVALID_HANDLE_VALUE = DWORD(-1).value
def not_a_console(handle):
real_stderr = False
if real_stdout or real_stderr:
+ # <https://msdn.microsoft.com/en-us/library/windows/desktop/ms687401%28v=vs.85%29.aspx>
# BOOL WINAPI WriteConsoleW(HANDLE hOutput, LPWSTR lpBuffer, DWORD nChars,
# LPDWORD lpCharsWritten, LPVOID lpReserved);
- WriteConsoleW = WINFUNCTYPE(BOOL, HANDLE, LPWSTR, DWORD, POINTER(DWORD), LPVOID) \
- (("WriteConsoleW", windll.kernel32))
-
- # If any exception occurs in this code, we'll probably try to print it on stderr,
- # which makes for frustrating debugging if stderr is directed to this code.
- # So be paranoid about catching errors and reporting them to original_stderr,
- # so that we can at least see them.
+ WriteConsoleW = WINFUNCTYPE(
+ BOOL, HANDLE, LPWSTR, DWORD, POINTER(DWORD), LPVOID,
+ use_last_error=True
+ )(("WriteConsoleW", windll.kernel32))
class UnicodeOutput:
def __init__(self, hConsole, stream, fileno, name):
self.encoding = 'utf-8'
self.name = name
if hasattr(stream, 'encoding') and canonical_encoding(stream.encoding) != 'utf-8':
- log.msg("%s (%r) had encoding %r, but we're going to write UTF-8 to it" %
+ log.msg("%s: %r had encoding %r, but we're going to write UTF-8 to it" %
(name, stream, stream.encoding), level=log.CURIOUS)
self.flush()
try:
self._stream.flush()
except Exception, e:
- print >>original_stderr, repr(e)
+ _complain("%s.flush: %r from %r" % (self.name, e, self._stream))
raise
def write(self, text):
remaining = len(text)
while remaining > 0:
n = DWORD(0)
- retval = WriteConsoleW(self._hConsole, text, remaining, byref(n), None)
- if retval == 0 or n.value == 0:
- raise IOError("could not write to %s [WriteConsoleW returned %r, n.value = %r]"
- % (self.name, retval, n.value))
+ # There is a shorter-than-documented limitation on the length of the string
+ # passed to WriteConsoleW (see #1232).
+ retval = WriteConsoleW(self._hConsole, text, min(remaining, 10000), byref(n), None)
+ if retval == 0:
+ raise IOError("WriteConsoleW failed with WinError: %s" % (WinError(get_last_error()),))
+ if n.value == 0:
+ raise IOError("WriteConsoleW returned %r, n.value = 0" % (retval,))
remaining -= n.value
if remaining == 0: break
text = text[n.value:]
except Exception, e:
- print >>original_stderr, repr(e)
+ _complain("%s.write: %r" % (self.name, e))
raise
def writelines(self, lines):
for line in lines:
self.write(line)
except Exception, e:
- print >>original_stderr, repr(e)
+ _complain("%s.writelines: %r" % (self.name, e))
raise
if real_stdout:
if real_stderr:
sys.stderr = UnicodeOutput(hStderr, None, STDERR_FILENO, '<Unicode console stderr>')
else:
- sys.stderr = UnicodeOutput(None, sys.stderr, old_stderr_fileno, '<Unicode redirected stdout>')
+ sys.stderr = UnicodeOutput(None, sys.stderr, old_stderr_fileno, '<Unicode redirected stderr>')
except Exception, e:
- print >>original_stderr, "exception %r while fixing up sys.stdout and sys.stderr" % (e,)
- log.msg("exception %r while fixing up sys.stdout and sys.stderr" % (e,), log.WEIRD)
+ _complain("exception %r while fixing up sys.stdout and sys.stderr" % (e,))
+
+ # This works around <http://bugs.python.org/issue2128>.
- # Unmangle command-line arguments.
- GetCommandLineW = WINFUNCTYPE(LPWSTR)(("GetCommandLineW", windll.kernel32))
- CommandLineToArgvW = WINFUNCTYPE(POINTER(LPWSTR), LPCWSTR, POINTER(c_int)) \
- (("CommandLineToArgvW", windll.shell32))
+ # <https://msdn.microsoft.com/en-us/library/windows/desktop/ms683156%28v=vs.85%29.aspx>
+ GetCommandLineW = WINFUNCTYPE(
+ LPWSTR,
+ use_last_error=True
+ )(("GetCommandLineW", windll.kernel32))
+
+ # <https://msdn.microsoft.com/en-us/library/windows/desktop/bb776391%28v=vs.85%29.aspx>
+ CommandLineToArgvW = WINFUNCTYPE(
+ POINTER(LPWSTR), LPCWSTR, POINTER(c_int),
+ use_last_error=True
+ )(("CommandLineToArgvW", windll.shell32))
argc = c_int(0)
argv_unicode = CommandLineToArgvW(GetCommandLineW(), byref(argc))
+ if argv_unicode is None:
+ raise WinError(get_last_error())
+ # Because of <http://bugs.python.org/issue8775> (and similar limitations in
+ # twisted), the 'bin/tahoe' script cannot invoke us with the actual Unicode arguments.
+ # Instead it "mangles" or escapes them using \x7F as an escape character, which we
+ # unescape here.
def unmangle(s):
- return re.sub(ur'\x7f[0-9a-fA-F]*\;', lambda m: unichr(int(m.group(0)[1:-1], 16)), s)
+ return re.sub(ur'\x7F[0-9a-fA-F]*\;', lambda m: unichr(int(m.group(0)[1:-1], 16)), s)
try:
- sys.argv = [unmangle(argv_unicode[i]).encode('utf-8') for i in xrange(1, argc.value)]
+ argv = [unmangle(argv_unicode[i]).encode('utf-8') for i in xrange(0, argc.value)]
except Exception, e:
- print >>sys.stderr, "%s: could not unmangle Unicode arguments" % (sys.argv[0],)
- print >>sys.stderr, [argv_unicode[i] for i in xrange(1, argc.value)]
+ _complain("%s: could not unmangle Unicode arguments.\n%r"
+ % (sys.argv[0], [argv_unicode[i] for i in xrange(0, argc.value)]))
raise
+ # Take only the suffix with the same number of arguments as sys.argv.
+ # This accounts for anything that can cause initial arguments to be stripped,
+ # for example, the Python interpreter or any options passed to it, or runner
+ # scripts such as 'coverage run'. It works even if there are no such arguments,
+ # as in the case of a frozen executable created by bb-freeze or similar.
+
+ sys.argv = argv[-len(sys.argv):]
if sys.argv[0].endswith('.pyscript'):
sys.argv[0] = sys.argv[0][:-9]
projects / tahoe-lafs / tahoe-lafs.git / blobdiff