cpython/Lib/plat-mac/macostools.py

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"""macostools - Various utility functions for MacOS.
mkalias(src, dst) - Create a finder alias 'dst' pointing to 'src'
copy(src, dst) - Full copy of 'src' to 'dst'
"""
import macfs
from Carbon import Res
import os
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from MACFS import *
import MacOS
import time
try:
openrf = MacOS.openrf
except AttributeError:
# Backward compatability
openrf = open
Error = 'macostools.Error'
BUFSIZ=0x80000 # Copy in 0.5Mb chunks
#
# Not guaranteed to be correct or stay correct (Apple doesn't tell you
# how to do this), but it seems to work.
#
def mkalias(src, dst, relative=None):
"""Create a finder alias"""
srcfss = macfs.FSSpec(src)
# The next line will fail under unix-Python if the destination
# doesn't exist yet. We should change this code to be fsref-based.
dstfss = macfs.FSSpec(dst)
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if relative:
relativefss = macfs.FSSpec(relative)
# ik mag er geen None in stoppen :-(
alias = srcfss.NewAlias(relativefss)
else:
alias = srcfss.NewAlias()
if os.path.isdir(src):
cr, tp = 'MACS', 'fdrp'
else:
cr, tp = srcfss.GetCreatorType()
Res.FSpCreateResFile(dstfss, cr, tp, -1)
h = Res.FSpOpenResFile(dstfss, 3)
resource = Res.Resource(alias.data)
resource.AddResource('alis', 0, '')
Res.CloseResFile(h)
dstfinfo = dstfss.GetFInfo()
dstfinfo.Flags = dstfinfo.Flags|0x8000 # Alias flag
dstfss.SetFInfo(dstfinfo)
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def mkdirs(dst):
"""Make directories leading to 'dst' if they don't exist yet"""
if dst == '' or os.path.exists(dst):
return
head, tail = os.path.split(dst)
if os.sep == ':' and not ':' in head:
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head = head + ':'
mkdirs(head)
os.mkdir(dst, 0777)
def touched(dst):
"""Tell the finder a file has changed"""
file_fss = macfs.FSSpec(dst)
vRefNum, dirID, name = file_fss.as_tuple()
dir_fss = macfs.FSSpec((vRefNum, dirID, ''))
crdate, moddate, bkdate = dir_fss.GetDates()
now = time.time()
if now == moddate:
now = now + 1
try:
dir_fss.SetDates(crdate, now, bkdate)
except macfs.error:
pass
def touched_ae(dst):
"""Tell the finder a file has changed"""
import Finder
f = Finder.Finder()
file_fss = macfs.FSSpec(dst)
vRefNum, dirID, name = file_fss.as_tuple()
dir_fss = macfs.FSSpec((vRefNum, dirID, ''))
f.update(dir_fss)
def copy(src, dst, createpath=0, copydates=1, forcetype=None):
"""Copy a file, including finder info, resource fork, etc"""
if hasattr(src, 'as_pathname'):
src = src.as_pathname()
if hasattr(dst, 'as_pathname'):
dst = dst.as_pathname()
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if createpath:
mkdirs(os.path.split(dst)[0])
ifp = open(src, 'rb')
ofp = open(dst, 'wb')
d = ifp.read(BUFSIZ)
while d:
ofp.write(d)
d = ifp.read(BUFSIZ)
ifp.close()
ofp.close()
ifp = openrf(src, '*rb')
ofp = openrf(dst, '*wb')
d = ifp.read(BUFSIZ)
while d:
ofp.write(d)
d = ifp.read(BUFSIZ)
ifp.close()
ofp.close()
srcfss = macfs.FSSpec(src)
dstfss = macfs.FSSpec(dst)
sf = srcfss.GetFInfo()
df = dstfss.GetFInfo()
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df.Creator, df.Type = sf.Creator, sf.Type
if forcetype != None:
df.Type = forcetype
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df.Flags = (sf.Flags & (kIsStationary|kNameLocked|kHasBundle|kIsInvisible|kIsAlias))
dstfss.SetFInfo(df)
if copydates:
crdate, mddate, bkdate = srcfss.GetDates()
dstfss.SetDates(crdate, mddate, bkdate)
touched(dstfss)
def copytree(src, dst, copydates=1):
"""Copy a complete file tree to a new destination"""
if os.path.isdir(src):
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mkdirs(dst)
files = os.listdir(src)
for f in files:
copytree(os.path.join(src, f), os.path.join(dst, f), copydates)
else:
copy(src, dst, 1, copydates)