cmd/ftp-cmd.py

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