cmd/ftp-cmd.py

   1 #!/usr/bin/env python
   2 import sys, os, re, stat, fnmatch
   3 from bup import options, git, shquote, vfs
   4 from bup.helpers import *
   5
   6 handle_ctrl_c()
   7
   8
   9 def node_name(text, n):
  10     if stat.S_ISDIR(n.mode):
  11         return '%s/' % text
  12     elif stat.S_ISLNK(n.mode):
  13         return '%s@' % text
  14     else:
  15         return '%s' % text
  16
  17
  18 class OptionError(Exception):
  19     pass
  20
  21
  22 ls_optspec = """
  23 ls [-a] [path...]
  24 --
  25 a,all   include hidden files in the listing
  26 """
  27 ls_opt = options.Options('ls', ls_optspec, onabort=OptionError)
  28
  29 def do_ls(cmd_args):
  30     try:
  31         (opt, flags, extra) = ls_opt.parse(cmd_args)
  32     except OptionError, e:
  33         return
  34
  35     L = []
  36
  37     for path in (extra or ['.']):
  38         n = pwd.try_resolve(path)
  39
  40         if stat.S_ISDIR(n.mode):
  41             for sub in n:
  42                 name = sub.name
  43                 if opt.all or not len(name)>1 or not name.startswith('.'):
  44                     L.append(node_name(name, sub))
  45         else:
  46             L.append(node_name(path, n))
  47         print columnate(L, '')
  48
  49
  50 def write_to_file(inf, outf):
  51     for blob in chunkyreader(inf):
  52         outf.write(blob)
  53
  54
  55 def inputiter():
  56     if os.isatty(sys.stdin.fileno()):
  57         while 1:
  58             try:
  59                 yield raw_input('bup> ')
  60             except EOFError:
  61                 break
  62     else:
  63         for line in sys.stdin:
  64             yield line
  65
  66
  67 def _completer_get_subs(line):
  68     (qtype, lastword) = shquote.unfinished_word(line)
  69     (dir,name) = os.path.split(lastword)
  70     #log('\ncompleter: %r %r %r\n' % (qtype, lastword, text))
  71     try:
  72         n = pwd.resolve(dir)
  73         subs = list(filter(lambda x: x.name.startswith(name),
  74                            n.subs()))
  75     except vfs.NoSuchFile, e:
  76         subs = []
  77     return (dir, name, qtype, lastword, subs)
  78
  79
  80 def find_readline_lib():
  81     """Return the name (and possibly the full path) of the readline library
  82     linked to the given readline module.
  83     """
  84     import readline
  85     f = open(readline.__file__, "rb")
  86     try:
  87         data = f.read()
  88     finally:
  89         f.close()
  90     import re
  91     m = re.search('\0([^\0]*libreadline[^\0]*)\0', data)
  92     if m:
  93         return m.group(1)
  94     return None
  95
  96
  97 def init_readline_vars():
  98     """Work around trailing space automatically inserted by readline.
  99     See http://bugs.python.org/issue5833"""
 100     try:
 101         import ctypes
 102     except ImportError:
 103         # python before 2.5 didn't have the ctypes module; but those
 104         # old systems probably also didn't have this readline bug, so
 105         # just ignore it.
 106         return
 107     lib_name = find_readline_lib()
 108     if lib_name is not None:
 109         lib = ctypes.cdll.LoadLibrary(lib_name)
 110         global rl_completion_suppress_append
 111         rl_completion_suppress_append = ctypes.c_int.in_dll(lib,
 112                                     "rl_completion_suppress_append")
 113
 114
 115 rl_completion_suppress_append = None
 116 _last_line = None
 117 _last_res = None
 118 def completer(text, state):
 119     global _last_line
 120     global _last_res
 121     global rl_completion_suppress_append
 122     if rl_completion_suppress_append is not None:
 123         rl_completion_suppress_append.value = 1
 124     try:
 125         line = readline.get_line_buffer()[:readline.get_endidx()]
 126         if _last_line != line:
 127             _last_res = _completer_get_subs(line)
 128             _last_line = line
 129         (dir, name, qtype, lastword, subs) = _last_res
 130         if state < len(subs):
 131             sn = subs[state]
 132             sn1 = sn.try_resolve()  # find the type of any symlink target
 133             fullname = os.path.join(dir, sn.name)
 134             if stat.S_ISDIR(sn1.mode):
 135                 ret = shquote.what_to_add(qtype, lastword, fullname+'/',
 136                                           terminate=False)
 137             else:
 138                 ret = shquote.what_to_add(qtype, lastword, fullname,
 139                                           terminate=True) + ' '
 140             return text + ret
 141     except Exception, e:
 142         log('\n')
 143         try:
 144             import traceback
 145             traceback.print_tb(sys.exc_traceback)
 146         except Exception, e2:
 147             log('Error printing traceback: %s\n' % e2)
 148         log('\nError in completion: %s\n' % e)
 149
 150
 151 optspec = """
 152 bup ftp [commands...]
 153 """
 154 o = options.Options('bup ftp', optspec)
 155 (opt, flags, extra) = o.parse(sys.argv[1:])
 156
 157 git.check_repo_or_die()
 158
 159 top = vfs.RefList(None)
 160 pwd = top
 161 rv = 0
 162
 163 if extra:
 164     lines = extra
 165 else:
 166     try:
 167         import readline
 168     except ImportError:
 169         log('* readline module not available: line editing disabled.\n')
 170         readline = None
 171
 172     if readline:
 173         readline.set_completer_delims(' \t\n\r/')
 174         readline.set_completer(completer)
 175         readline.parse_and_bind("tab: complete")
 176         init_readline_vars()
 177     lines = inputiter()
 178
 179 for line in lines:
 180     if not line.strip():
 181         continue
 182     words = [word for (wordstart,word) in shquote.quotesplit(line)]
 183     cmd = words[0].lower()
 184     #log('execute: %r %r\n' % (cmd, parm))
 185     try:
 186         if cmd == 'ls':
 187             do_ls(words[1:])
 188         elif cmd == 'cd':
 189             np = pwd
 190             for parm in words[1:]:
 191                 np = np.resolve(parm)
 192                 if not stat.S_ISDIR(np.mode):
 193                     raise vfs.NotDir('%s is not a directory' % parm)
 194             pwd = np
 195         elif cmd == 'pwd':
 196             print pwd.fullname()
 197         elif cmd == 'cat':
 198             for parm in words[1:]:
 199                 write_to_file(pwd.resolve(parm).open(), sys.stdout)
 200         elif cmd == 'get':
 201             if len(words) not in [2,3]:
 202                 rv = 1
 203                 raise Exception('Usage: get <filename> [localname]')
 204             rname = words[1]
 205             (dir,base) = os.path.split(rname)
 206             lname = len(words)>2 and words[2] or base
 207             inf = pwd.resolve(rname).open()
 208             log('Saving %r\n' % lname)
 209             write_to_file(inf, open(lname, 'wb'))
 210         elif cmd == 'mget':
 211             for parm in words[1:]:
 212                 (dir,base) = os.path.split(parm)
 213                 for n in pwd.resolve(dir).subs():
 214                     if fnmatch.fnmatch(n.name, base):
 215                         try:
 216                             log('Saving %r\n' % n.name)
 217                             inf = n.open()
 218                             outf = open(n.name, 'wb')
 219                             write_to_file(inf, outf)
 220                             outf.close()
 221                         except Exception, e:
 222                             rv = 1
 223                             log('  error: %s\n' % e)
 224         elif cmd == 'help' or cmd == '?':
 225             log('Commands: ls cd pwd cat get mget help quit\n')
 226         elif cmd == 'quit' or cmd == 'exit' or cmd == 'bye':
 227             break
 228         else:
 229             rv = 1
 230             raise Exception('no such command %r' % cmd)
 231     except Exception, e:
 232         rv = 1
 233         log('error: %s\n' % e)
 234         #raise
 235
 236 sys.exit(rv)