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