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     import ctypes
 101     lib_name = find_readline_lib()
 102     if lib_name is not None:
 103         lib = ctypes.cdll.LoadLibrary(lib_name)
 104         global rl_completion_suppress_append
 105         rl_completion_suppress_append = ctypes.c_int.in_dll(lib,
 106                                     "rl_completion_suppress_append")
 107
 108
 109 rl_completion_suppress_append = None
 110 _last_line = None
 111 _last_res = None
 112 def completer(text, state):
 113     global _last_line
 114     global _last_res
 115     global rl_completion_suppress_append
 116     if rl_completion_suppress_append is not None:
 117         rl_completion_suppress_append.value = 1
 118     try:
 119         line = readline.get_line_buffer()[:readline.get_endidx()]
 120         if _last_line != line:
 121             _last_res = _completer_get_subs(line)
 122             _last_line = line
 123         (dir, name, qtype, lastword, subs) = _last_res
 124         if state < len(subs):
 125             sn = subs[state]
 126             sn1 = sn.try_resolve()  # find the type of any symlink target
 127             fullname = os.path.join(dir, sn.name)
 128             if stat.S_ISDIR(sn1.mode):
 129                 ret = shquote.what_to_add(qtype, lastword, fullname+'/',
 130                                           terminate=False)
 131             else:
 132                 ret = shquote.what_to_add(qtype, lastword, fullname,
 133                                           terminate=True) + ' '
 134             return text + ret
 135     except Exception, e:
 136         log('\n')
 137         try:
 138             import traceback
 139             traceback.print_tb(sys.exc_traceback)
 140         except Exception, e2:
 141             log('Error printing traceback: %s\n' % e2)
 142         log('\nError in completion: %s\n' % e)
 143
 144
 145 optspec = """
 146 bup ftp [commands...]
 147 """
 148 o = options.Options('bup ftp', optspec)
 149 (opt, flags, extra) = o.parse(sys.argv[1:])
 150
 151 git.check_repo_or_die()
 152
 153 top = vfs.RefList(None)
 154 pwd = top
 155 rv = 0
 156
 157 if extra:
 158     lines = extra
 159 else:
 160     try:
 161         import readline
 162     except ImportError:
 163         log('* readline module not available: line editing disabled.\n')
 164         readline = None
 165
 166     if readline:
 167         readline.set_completer_delims(' \t\n\r/')
 168         readline.set_completer(completer)
 169         readline.parse_and_bind("tab: complete")
 170         init_readline_vars()
 171     lines = inputiter()
 172
 173 for line in lines:
 174     if not line.strip():
 175         continue
 176     words = [word for (wordstart,word) in shquote.quotesplit(line)]
 177     cmd = words[0].lower()
 178     #log('execute: %r %r\n' % (cmd, parm))
 179     try:
 180         if cmd == 'ls':
 181             do_ls(words[1:])
 182         elif cmd == 'cd':
 183             np = pwd
 184             for parm in words[1:]:
 185                 np = np.resolve(parm)
 186                 if not stat.S_ISDIR(np.mode):
 187                     raise vfs.NotDir('%s is not a directory' % parm)
 188             pwd = np
 189         elif cmd == 'pwd':
 190             print pwd.fullname()
 191         elif cmd == 'cat':
 192             for parm in words[1:]:
 193                 write_to_file(pwd.resolve(parm).open(), sys.stdout)
 194         elif cmd == 'get':
 195             if len(words) not in [2,3]:
 196                 rv = 1
 197                 raise Exception('Usage: get <filename> [localname]')
 198             rname = words[1]
 199             (dir,base) = os.path.split(rname)
 200             lname = len(words)>2 and words[2] or base
 201             inf = pwd.resolve(rname).open()
 202             log('Saving %r\n' % lname)
 203             write_to_file(inf, open(lname, 'wb'))
 204         elif cmd == 'mget':
 205             for parm in words[1:]:
 206                 (dir,base) = os.path.split(parm)
 207                 for n in pwd.resolve(dir).subs():
 208                     if fnmatch.fnmatch(n.name, base):
 209                         try:
 210                             log('Saving %r\n' % n.name)
 211                             inf = n.open()
 212                             outf = open(n.name, 'wb')
 213                             write_to_file(inf, outf)
 214                             outf.close()
 215                         except Exception, e:
 216                             rv = 1
 217                             log('  error: %s\n' % e)
 218         elif cmd == 'help' or cmd == '?':
 219             log('Commands: ls cd pwd cat get mget help quit\n')
 220         elif cmd == 'quit' or cmd == 'exit' or cmd == 'bye':
 221             break
 222         else:
 223             rv = 1
 224             raise Exception('no such command %r' % cmd)
 225     except Exception, e:
 226         rv = 1
 227         log('error: %s\n' % e)
 228         #raise
 229
 230 sys.exit(rv)