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https://github.com/elliotnunn/empw.git
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225 lines
6.2 KiB
Python
Executable File
225 lines
6.2 KiB
Python
Executable File
#!/usr/bin/env python3
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from subprocess import run, PIPE, DEVNULL
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from sys import argv
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from time import sleep
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import datetime
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from os import path
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import tempfile
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# oldrun = run
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# def run(*args, **kwargs):
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# print('CMD', *args)
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# return oldrun(*args, **kwargs)
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# I am now modifying this to accept *no* arguments,
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# instead operating on the CWD.
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# A couple of useful HFSUTILS wrappers
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def h_topdir():
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rc = 0
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while rc == 0:
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rc = run(['hcd','::'], stderr=DEVNULL).returncode
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def h_reccd(path_comps):
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h_topdir()
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for p in path_comps:
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run(['hcd', p], check=True)
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# All relative to the CWD, of course:
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srcimg = 'SourceForEmulator.dmg'
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label = 'Src'
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# Read and sanitise the arguments. Outputs: "dirs" and "cmds" (both lists, may be empty)
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# Dirs are in /full/path/without/trailing/slash form, thanks to os.path.abspath
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if not path.exists(srcimg):
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run(['touch', srcimg])
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run(['xattr', '-w', 'com.apple.metadata:com_apple_backup_excludeItem', 'com.apple.backupd', srcimg])
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run(['dd', 'if=/dev/zero', 'of='+srcimg, 'bs=1048576', 'count='+str(256)], stdout=DEVNULL, stderr=DEVNULL, check=True)
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run(['hformat', '-l', label, srcimg], stdout=DEVNULL, check=True)
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run(['humount'], check=True)
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# Now run rsync and see what we can get out of it! (Should at least reconsider rsync policy!)
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# Rsync should update any changed file
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# Potential problem: need to remove ._ thingummyjigs!
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rsync_opts = [
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'--dry-run', # Ask rsync what it *would* do if macOS
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'--itemize-changes', # hadn't dropped R/W HFS support.
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'--exclude', '.*', # Down with dotfiles.
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'--exclude', srcimg,
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'--exclude', 'Desktop DB',
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'--exclude', 'Desktop DF',
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'--exclude', 'Desktop Folder',
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'--exclude', 'Trash',
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'--exclude', 'TheVolumeSettingsFolder',
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'--exclude', 'TheFindByContentFolder',
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'--recursive',
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'-tX', # consider times and xattrs
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'--delete', # may delete things on the vMac drive
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]
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try:
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cmdresult = run(['hdiutil', 'attach', '-nobrowse', srcimg], stdout=PIPE, check=True).stdout.decode('ascii')
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mountpoint = next(x for x in cmdresult.split() if x.startswith('/') and not x.startswith('/dev'))
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mountpoint = mountpoint.rstrip('/') # try to deal in clean paths
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rsync_list = [] # (local_base_path, relative_path_components, rsync_code) tuple
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# rsync /src/dir/without/trailing/slash/DIRNAME /dest/dir/with/trailing/slash/
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# results in /dest/dir/with/trailing/slash/DIRNAME
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rsync = run(['rsync', *rsync_opts, './', mountpoint+'/'], stdout=PIPE, check=True)
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new_rsync_lines = rsync.stdout.decode('utf8').splitlines()
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for new_rsync_line in new_rsync_lines:
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spcidx = new_rsync_line.index(' ')
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code_part = new_rsync_line[:spcidx]
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path_part = new_rsync_line[spcidx+1:].lstrip()
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if '._' in path_part:
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raise ValueError('AppleDouble-style name detected: %s' % path_part)
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rsync_list.append((code_part, path_part))
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finally:
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run(['hdiutil', 'detach', mountpoint], check=True, stdout=DEVNULL)
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# for rsync_code, path in rsync_list:
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# # Get rid of the silly AppleDouble prefix
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# a, b = path.splitext(rsync_path)
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# if b.startswith('._'):
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# b = b[2:]
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# path = path.join(a, b)
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# try:
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run(['hmount', srcimg], stdout=DEVNULL, check=True)
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try:
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for rsync_code, rsync_path in rsync_list:
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# print([local_dir, rsync_code, rsync_path])
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# Suggest: replace with code to make fuck/marry/kill plan for each file
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# first, parse the rsync commands!
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if rsync_code.startswith('*'):
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if rsync_code == '*deleting':
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print('-', rsync_path)
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# similar to the folder creation code below
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if rsync_path.endswith('/'):
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cmdname = 'hrmdir'
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else:
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cmdname = 'hdel'
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a, b = path.split(rsync_path.rstrip('/'))
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hfs_dir_comps = a.split('/') if a else []
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hfs_deleteme = b
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h_reccd(hfs_dir_comps)
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run([cmdname, hfs_deleteme], check=True)
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else:
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raise ValueError('Unknown extended rsync code: %s' % rsync_code)
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elif rsync_code.startswith('.'):
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pass
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else:
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utype, ftype, cdiff, sdiff, tdiff, pdiff, odiff, gdiff, *_ = rsync_code
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if utype == '>':
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if ftype == 'f':
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print('+', rsync_path)
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hfs_dir = ':' + path.join(path.dirname(rsync_path), '').replace(*'/:')
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with tempfile.NamedTemporaryFile(prefix='/tmp/', suffix='.bin') as f:
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macbin_tmp = f.name
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h_topdir()
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run(['macbinary', 'encode', '--overwrite', '-o', macbin_tmp, rsync_path], check=True)
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run(['hcopy', '-m', macbin_tmp, hfs_dir], check=True)
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else:
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raise ValueError()
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elif utype == 'c':
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if ftype == 'd':
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a, b = path.split(rsync_path.rstrip('/'))
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hfs_dir_comps = a.split('/') if a else []
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hfs_mkdir_name = b
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h_reccd(hfs_dir_comps)
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run(['hmkdir', hfs_mkdir_name], check=True)
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else:
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raise ValueError()
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elif utype == '.':
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pass
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else:
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raise ValueError('Unknown rsync update code: %s' % rsync_code)
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finally:
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run(['humount'], check=True)
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# YXcstpoguax path/to/file
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# |||||||||||
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# `----------- the type of update being done::
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# |||||||||| <: file is being transferred to the remote host (sent).
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# |||||||||| >: file is being transferred to the local host (received).
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# |||||||||| c: local change/creation for the item, such as:
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# |||||||||| - the creation of a directory
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# |||||||||| - the changing of a symlink,
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# |||||||||| - etc.
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# |||||||||| h: the item is a hard link to another item (requires --hard-links).
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# |||||||||| .: the item is not being updated (though it might have attributes that are being modified).
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# |||||||||| *: means that the rest of the itemized-output area contains a message (e.g. "deleting").
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# ||||||||||
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# `---------- the file type:
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# ||||||||| f for a file,
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# ||||||||| d for a directory,
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# ||||||||| L for a symlink,
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# ||||||||| D for a device,
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# ||||||||| S for a special file (e.g. named sockets and fifos).
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# |||||||||
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# `--------- c: different checksum (for regular files)
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# |||||||| changed value (for symlink, device, and special file)
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# `-------- s: Size is different
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# `------- t: Modification time is different
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# `------ p: Permission are different
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# `----- o: Owner is different
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# `---- g: Group is different
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# `--- u: The u slot is reserved for future use.
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# `-- a: The ACL information changed
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