129 lines
3.5 KiB
Python
129 lines
3.5 KiB
Python
"""Utility functions for copying files.
|
|
|
|
XXX The functions here don't copy the resource fork or other metadata on Mac.
|
|
|
|
"""
|
|
|
|
import os
|
|
import sys
|
|
import stat
|
|
|
|
|
|
def copyfile(src, dst):
|
|
"""Copy data from src to dst"""
|
|
fsrc = None
|
|
fdst = None
|
|
try:
|
|
fsrc = open(src, 'rb')
|
|
fdst = open(dst, 'wb')
|
|
while 1:
|
|
buf = fsrc.read(16*1024)
|
|
if not buf:
|
|
break
|
|
fdst.write(buf)
|
|
finally:
|
|
if fdst:
|
|
fdst.close()
|
|
if fsrc:
|
|
fsrc.close()
|
|
|
|
def copymode(src, dst):
|
|
"""Copy mode bits from src to dst"""
|
|
st = os.stat(src)
|
|
mode = stat.S_IMODE(st[stat.ST_MODE])
|
|
os.chmod(dst, mode)
|
|
|
|
def copystat(src, dst):
|
|
"""Copy all stat info (mode bits, atime and mtime) from src to dst"""
|
|
st = os.stat(src)
|
|
mode = stat.S_IMODE(st[stat.ST_MODE])
|
|
os.utime(dst, (st[stat.ST_ATIME], st[stat.ST_MTIME]))
|
|
os.chmod(dst, mode)
|
|
|
|
|
|
def copy(src, dst):
|
|
"""Copy data and mode bits ("cp src dst").
|
|
|
|
The destination may be a directory.
|
|
|
|
"""
|
|
if os.path.isdir(dst):
|
|
dst = os.path.join(dst, os.path.basename(src))
|
|
copyfile(src, dst)
|
|
copymode(src, dst)
|
|
|
|
def copy2(src, dst):
|
|
"""Copy data and all stat info ("cp -p src dst").
|
|
|
|
The destination may be a directory.
|
|
|
|
"""
|
|
if os.path.isdir(dst):
|
|
dst = os.path.join(dst, os.path.basename(src))
|
|
copyfile(src, dst)
|
|
copystat(src, dst)
|
|
|
|
|
|
def copytree(src, dst, symlinks=0):
|
|
"""Recursively copy a directory tree using copy2().
|
|
|
|
The destination directory must not already exist.
|
|
Error are reported to standard output.
|
|
|
|
If the optional symlinks flag is true, symbolic links in the
|
|
source tree result in symbolic links in the destination tree; if
|
|
it is false, the contents of the files pointed to by symbolic
|
|
links are copied.
|
|
|
|
XXX Consider this example code rather than the ultimate tool.
|
|
|
|
"""
|
|
names = os.listdir(src)
|
|
os.mkdir(dst)
|
|
for name in names:
|
|
srcname = os.path.join(src, name)
|
|
dstname = os.path.join(dst, name)
|
|
try:
|
|
if symlinks and os.path.islink(srcname):
|
|
linkto = os.readlink(srcname)
|
|
os.symlink(linkto, dstname)
|
|
elif os.path.isdir(srcname):
|
|
copytree(srcname, dstname)
|
|
else:
|
|
copy2(srcname, dstname)
|
|
# XXX What about devices, sockets etc.?
|
|
except (IOError, os.error), why:
|
|
print "Can't copy %s to %s: %s" % (`srcname`, `dstname`, str(why))
|
|
|
|
def rmtree(path, ignore_errors=0, onerror=None):
|
|
"""Recursively delete a directory tree.
|
|
|
|
If ignore_errors is set, errors are ignored; otherwise, if
|
|
onerror is set, it is called to handle the error; otherwise, an
|
|
exception is raised.
|
|
|
|
"""
|
|
cmdtuples = []
|
|
_build_cmdtuple(path, cmdtuples)
|
|
for cmd in cmdtuples:
|
|
try:
|
|
apply(cmd[0], (cmd[1],))
|
|
except:
|
|
exc = sys.exc_info()
|
|
if ignore_errors:
|
|
pass
|
|
elif onerror:
|
|
onerror(cmd[0], cmd[1], exc)
|
|
else:
|
|
raise exc[0], (exc[1][0], exc[1][1] + ' removing '+cmd[1])
|
|
|
|
# Helper for rmtree()
|
|
def _build_cmdtuple(path, cmdtuples):
|
|
for f in os.listdir(path):
|
|
real_f = os.path.join(path,f)
|
|
if os.path.isdir(real_f) and not os.path.islink(real_f):
|
|
_build_cmdtuple(real_f, cmdtuples)
|
|
else:
|
|
cmdtuples.append((os.remove, real_f))
|
|
cmdtuples.append((os.rmdir, path))
|