def rm(args):
"""
Emulate most of the behavior of rm(1).
Only supports the -r (--recursive) and -f (--force) arguments.
"""
try:
opts, args = getopt(args, "rRf", ["force", "recursive"])
except GetoptError as e:
raise errors.PythonError("rm: %s" % e, 1)
force = False
recursive = False
for o, a in opts:
if o in ('-f', '--force'):
force = True
elif o in ('-r', '-R', '--recursive'):
recursive = True
for f in args:
if os.path.isdir(f):
if not recursive:
raise errors.PythonError("rm: cannot remove '%s': Is a directory" % f, 1)
else:
shutil.rmtree(f, force)
elif os.path.exists(f):
try:
os.unlink(f)
except:
if not force:
raise errors.PythonError("rm: failed to remove '%s': %s" % (f, sys.exc_info()[0]), 1)
elif not force:
raise errors.PythonError("rm: cannot remove '%s': No such file or directory" % f, 1)
def touch(args):
"""
Emulate the behavior of touch(1).
"""
try:
opts, args = getopt(args, "t:")
except GetoptError as e:
raise errors.PythonError("touch: %s" % e, 1)
opts = dict(opts)
times = None
if '-t' in opts:
import re
from time import mktime, localtime
m = re.match(
'^(?P<Y>(?:\d\d)?\d\d)?(?P<M>\d\d)(?P<D>\d\d)(?P<h>\d\d)(?P<m>\d\d)(?:\.(?P<s>\d\d))?$',
opts['-t'])
if not m:
raise errors.PythonError(
"touch: invalid date format '%s'" % opts['-t'], 1)
def normalized_field(m, f):
if f == 'Y':
if m.group(f) is None:
return localtime()[0]
y = int(m.group(f))
if y < 69:
y += 2000
elif y < 100:
y += 1900
return y
if m.group(f) is None:
return localtime()[0] if f == 'Y' else 0
return int(m.group(f))
time = [
normalized_field(m, f) for f in ['Y', 'M', 'D', 'h', 'm', 's']
] + [0, 0, -1]
time = mktime(time)
times = (time, time)
for f in args:
if not os.path.exists(f):
open(f, 'a').close()
os.utime(f, times)
def mkdir(args):
"""
Emulate some of the behavior of mkdir(1).
Only supports the -p (--parents) argument.
"""
try:
opts, args = getopt(args, "p", ["parents"])
except GetoptError as e:
raise errors.PythonError("mkdir: %s" % e, 1)
parents = False
for o, a in opts:
if o in ('-p', '--parents'):
parents = True
for f in args:
try:
if parents:
os.makedirs(f)
else:
os.mkdir(f)
except OSError as e:
if e.errno == errno.EEXIST and parents:
pass
else:
raise errors.PythonError("mkdir: %s" % e, 1)
def sleep(args):
"""
Emulate the behavior of sleep(1).
"""
total = 0
values = {'s': 1, 'm': 60, 'h': 3600, 'd': 86400}
for a in args:
multiplier = 1
for k, v in values.items():
if a.endswith(k):
a = a[:-1]
multiplier = v
break
try:
f = float(a)
total += f * multiplier
except ValueError:
raise errors.PythonError("sleep: invalid time interval '%s'" % a, 1)
time.sleep(total)
