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comparison mercurial/util.py @ 27369:c48ecc0b5bc9 stable

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copyfile: add an optional parameter to copy other stat data Contrary to the comment, I didn't see any evidence that we were copying atime/mtime at all. This adds a parameter to copyfile to optionally copy it and other stat data, with the default being to not copy it. Many systems don't support changing the timestamp of a symlink, but we don't need that in general anyway -- copystat is mostly useful for editors, most of which will dereference symlinks anyway.
author Siddharth Agarwal <sid0@fb.com>
date Sat, 12 Dec 2015 11:00:04 -0800
parents 6331a0c310db
children 4eeef1b2d689
comparison
equal deleted inserted replaced
27320:59d5f619e69e 27369:c48ecc0b5bc9
804 raise error.SignatureError 804 raise error.SignatureError
805 raise 805 raise
806 806
807 return check 807 return check
808 808
809 def copyfile(src, dest, hardlink=False): 809 def copyfile(src, dest, hardlink=False, copystat=False):
810 "copy a file, preserving mode and atime/mtime" 810 '''copy a file, preserving mode and optionally other stat info like
811 atime/mtime'''
811 if os.path.lexists(dest): 812 if os.path.lexists(dest):
812 unlink(dest) 813 unlink(dest)
813 # hardlinks are problematic on CIFS, quietly ignore this flag 814 # hardlinks are problematic on CIFS, quietly ignore this flag
814 # until we find a way to work around it cleanly (issue4546) 815 # until we find a way to work around it cleanly (issue4546)
815 if False and hardlink: 816 if False and hardlink:
818 return 819 return
819 except (IOError, OSError): 820 except (IOError, OSError):
820 pass # fall back to normal copy 821 pass # fall back to normal copy
821 if os.path.islink(src): 822 if os.path.islink(src):
822 os.symlink(os.readlink(src), dest) 823 os.symlink(os.readlink(src), dest)
824 # copytime is ignored for symlinks, but in general copytime isn't needed
825 # for them anyway
823 else: 826 else:
824 try: 827 try:
825 shutil.copyfile(src, dest) 828 shutil.copyfile(src, dest)
826 shutil.copymode(src, dest) 829 if copystat:
830 # copystat also copies mode
831 shutil.copystat(src, dest)
832 else:
833 shutil.copymode(src, dest)
827 except shutil.Error as inst: 834 except shutil.Error as inst:
828 raise Abort(str(inst)) 835 raise Abort(str(inst))
829 836
830 def copyfiles(src, dst, hardlink=None, progress=lambda t, pos: None): 837 def copyfiles(src, dst, hardlink=None, progress=lambda t, pos: None):
831 """Copy a directory tree using hardlinks if possible.""" 838 """Copy a directory tree using hardlinks if possible."""