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annotate Lib/netrc.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents c34cf9ce952f
children e5c4eb6b8e05 e6e3a0e91bea 4cdf21a0dbbc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """An object-oriented interface to .netrc files."""
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2
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3 # Module and documentation by Eric S. Raymond, 21 Dec 1998
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4
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5 import os, shlex
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6
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7 __all__ = ["netrc", "NetrcParseError"]
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8
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9
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10 class NetrcParseError(Exception):
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11 """Exception raised on syntax errors in the .netrc file."""
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12 def __init__(self, msg, filename=None, lineno=None):
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13 self.filename = filename
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14 self.lineno = lineno
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15 self.msg = msg
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16 Exception.__init__(self, msg)
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17
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18 def __str__(self):
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19 return "%s (%s, line %s)" % (self.msg, self.filename, self.lineno)
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20
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21
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22 class netrc:
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23 def __init__(self, file=None):
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24 if file is None:
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25 try:
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26 file = os.path.join(os.environ['HOME'], ".netrc")
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27 except KeyError:
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28 raise IOError("Could not find .netrc: $HOME is not set")
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29 fp = open(file)
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30 self.hosts = {}
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31 self.macros = {}
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32 lexer = shlex.shlex(fp)
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33 lexer.wordchars += r"""!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"""
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34 while 1:
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35 # Look for a machine, default, or macdef top-level keyword
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36 toplevel = tt = lexer.get_token()
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37 if not tt:
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38 break
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39 elif tt == 'machine':
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40 entryname = lexer.get_token()
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41 elif tt == 'default':
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42 entryname = 'default'
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43 elif tt == 'macdef': # Just skip to end of macdefs
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44 entryname = lexer.get_token()
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45 self.macros[entryname] = []
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46 lexer.whitespace = ' \t'
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47 while 1:
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48 line = lexer.instream.readline()
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49 if not line or line == '\012':
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50 lexer.whitespace = ' \t\r\n'
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51 break
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52 self.macros[entryname].append(line)
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53 continue
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54 else:
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55 raise NetrcParseError(
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56 "bad toplevel token %r" % tt, file, lexer.lineno)
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57
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58 # We're looking at start of an entry for a named machine or default.
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59 login = ''
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60 account = password = None
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61 self.hosts[entryname] = {}
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62 while 1:
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63 tt = lexer.get_token()
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64 if (tt=='' or tt == 'machine' or
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65 tt == 'default' or tt =='macdef'):
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66 if password:
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67 self.hosts[entryname] = (login, account, password)
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68 lexer.push_token(tt)
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69 break
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70 else:
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71 raise NetrcParseError(
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72 "malformed %s entry %s terminated by %s"
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73 % (toplevel, entryname, repr(tt)),
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74 file, lexer.lineno)
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75 elif tt == 'login' or tt == 'user':
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76 login = lexer.get_token()
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77 elif tt == 'account':
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78 account = lexer.get_token()
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79 elif tt == 'password':
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80 password = lexer.get_token()
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81 else:
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82 raise NetrcParseError("bad follower token %r" % tt,
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83 file, lexer.lineno)
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84
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85 def authenticators(self, host):
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86 """Return a (user, account, password) tuple for given host."""
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87 if host in self.hosts:
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88 return self.hosts[host]
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89 elif 'default' in self.hosts:
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90 return self.hosts['default']
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91 else:
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92 return None
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93
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94 def __repr__(self):
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95 """Dump the class data in the format of a .netrc file."""
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96 rep = ""
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97 for host in self.hosts.keys():
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98 attrs = self.hosts[host]
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99 rep = rep + "machine "+ host + "\n\tlogin " + repr(attrs[0]) + "\n"
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100 if attrs[1]:
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101 rep = rep + "account " + repr(attrs[1])
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102 rep = rep + "\tpassword " + repr(attrs[2]) + "\n"
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103 for macro in self.macros.keys():
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104 rep = rep + "macdef " + macro + "\n"
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105 for line in self.macros[macro]:
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106 rep = rep + line
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107 rep = rep + "\n"
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108 return rep
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109
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110 if __name__ == '__main__':
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111 print netrc()