def _InitDefaults(self):
# For some reason this is one of few variables EXPORTED. bash and dash
# both do it. (e.g. env -i -- dash -c env)
ExportGlobalString(self, 'PWD', posix.getcwd())
# Default value; user may unset it.
# $ echo -n "$IFS" | python -c 'import sys;print repr(sys.stdin.read())'
# ' \t\n'
SetGlobalString(self, 'IFS', split.DEFAULT_IFS)
# NOTE: Should we put these in a namespace for Oil?
SetGlobalString(self, 'UID', str(posix.getuid()))
SetGlobalString(self, 'EUID', str(posix.geteuid()))
SetGlobalString(self, 'HOSTNAME', str(libc.gethostname()))
# In bash, this looks like 'linux-gnu', 'linux-musl', etc. Scripts test
# for 'darwin' and 'freebsd' too. They generally don't like at 'gnu' or
# 'musl'. We don't have that info, so just make it 'linux'.
SetGlobalString(self, 'OSTYPE', str(posix.uname()[0].lower()))
# For getopts builtin
SetGlobalString(self, 'OPTIND', '1')
# For xtrace
SetGlobalString(self, 'PS4', '+ ')
# bash-completion uses this. Value copied from bash. It doesn't integrate
# with 'readline' yet.
SetGlobalString(self, 'COMP_WORDBREAKS', _READLINE_DELIMS)
def GetMyHomeDir():
# type: () -> Optional[str]
"""Get the user's home directory from the /etc/pyos.
Used by $HOME initialization in osh/state.py. Tilde expansion and readline
initialization use mem.GetValue('HOME').
"""
uid = posix.getuid()
try:
e = pwd.getpwuid(uid)
except KeyError:
return None
return e.pw_dir