##// END OF EJS Templates
stdio: raise StdioError if something goes wrong in ui.flush...
stdio: raise StdioError if something goes wrong in ui.flush The prior code used to ignore all errors, which was intended to deal with a decade-old problem with writing to broken pipes on Windows. However, that code inadvertantly went a lot further, making it impossible to detect *all* I/O errors on stdio ... but only sometimes. What actually happened was that if Mercurial wrote less than a stdio buffer's worth of output (the overwhelmingly common case for most commands), any error that occurred would get swallowed here. But if the buffering strategy changed, an unhandled IOError could be raised from any number of other locations. Because we now have a top-level StdioError handler, and ui._write and ui._write_err (and now flush!) will raise that exception, we have one rational place to detect and handle these errors.

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scmposix.py
79 lines | 2.1 KiB | text/x-python | PythonLexer
from __future__ import absolute_import
import array
import errno
import fcntl
import os
import sys
from . import (
encoding,
osutil,
pycompat,
)
def _rcfiles(path):
rcs = [os.path.join(path, 'hgrc')]
rcdir = os.path.join(path, 'hgrc.d')
try:
rcs.extend([os.path.join(rcdir, f)
for f, kind in osutil.listdir(rcdir)
if f.endswith(".rc")])
except OSError:
pass
return rcs
def systemrcpath():
path = []
if pycompat.sysplatform == 'plan9':
root = 'lib/mercurial'
else:
root = 'etc/mercurial'
# old mod_python does not set sys.argv
if len(getattr(sys, 'argv', [])) > 0:
p = os.path.dirname(os.path.dirname(pycompat.sysargv[0]))
if p != '/':
path.extend(_rcfiles(os.path.join(p, root)))
path.extend(_rcfiles('/' + root))
return path
def userrcpath():
if pycompat.sysplatform == 'plan9':
return [encoding.environ['home'] + '/lib/hgrc']
elif pycompat.sysplatform == 'darwin':
return [os.path.expanduser('~/.hgrc')]
else:
confighome = encoding.environ.get('XDG_CONFIG_HOME')
if confighome is None or not os.path.isabs(confighome):
confighome = os.path.expanduser('~/.config')
return [os.path.expanduser('~/.hgrc'),
os.path.join(confighome, 'hg', 'hgrc')]
def termsize(ui):
try:
import termios
TIOCGWINSZ = termios.TIOCGWINSZ # unavailable on IRIX (issue3449)
except (AttributeError, ImportError):
return 80, 24
for dev in (ui.ferr, ui.fout, ui.fin):
try:
try:
fd = dev.fileno()
except AttributeError:
continue
if not os.isatty(fd):
continue
arri = fcntl.ioctl(fd, TIOCGWINSZ, '\0' * 8)
height, width = array.array(r'h', arri)[:2]
if width > 0 and height > 0:
return width, height
except ValueError:
pass
except IOError as e:
if e[0] == errno.EINVAL:
pass
else:
raise
return 80, 24