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annotate Lib/email/_parseaddr.py @ 64274:87bdf53ff4bb

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#1194222: make parsedate always return RFC2822 four character years. Two character years are now converted to four character years using the Posix standard rule (<68 == 2000, >=68==1900). This makes the parsed date RFC2822 compliant even if the input is not. Patch and test by Jeffrey Finkelstein.
author R. David Murray <rdmurray@bitdance.com>
date Wed, 25 Aug 2010 00:45:55 +0000
parents d5f3c2f416f2
children ef5c57217b20
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1 # Copyright (C) 2002-2007 Python Software Foundation
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2 # Contact: email-sig@python.org
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3
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4 """Email address parsing code.
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5
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6 Lifted directly from rfc822.py. This should eventually be rewritten.
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7 """
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8
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9 __all__ = [
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10 'mktime_tz',
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11 'parsedate',
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12 'parsedate_tz',
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13 'quote',
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14 ]
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15
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16 import time
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17
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18 SPACE = ' '
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19 EMPTYSTRING = ''
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20 COMMASPACE = ', '
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21
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22 # Parse a date field
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23 _monthnames = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul',
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24 'aug', 'sep', 'oct', 'nov', 'dec',
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25 'january', 'february', 'march', 'april', 'may', 'june', 'july',
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26 'august', 'september', 'october', 'november', 'december']
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27
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28 _daynames = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun']
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29
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30 # The timezone table does not include the military time zones defined
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31 # in RFC822, other than Z. According to RFC1123, the description in
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32 # RFC822 gets the signs wrong, so we can't rely on any such time
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33 # zones. RFC1123 recommends that numeric timezone indicators be used
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34 # instead of timezone names.
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35
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36 _timezones = {'UT':0, 'UTC':0, 'GMT':0, 'Z':0,
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37 'AST': -400, 'ADT': -300, # Atlantic (used in Canada)
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38 'EST': -500, 'EDT': -400, # Eastern
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39 'CST': -600, 'CDT': -500, # Central
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40 'MST': -700, 'MDT': -600, # Mountain
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41 'PST': -800, 'PDT': -700 # Pacific
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42 }
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43
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44
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45 def parsedate_tz(data):
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46 """Convert a date string to a time tuple.
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47
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48 Accounts for military timezones.
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49 """
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50 data = data.split()
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51 # The FWS after the comma after the day-of-week is optional, so search and
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52 # adjust for this.
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53 if data[0].endswith(',') or data[0].lower() in _daynames:
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54 # There's a dayname here. Skip it
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55 del data[0]
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56 else:
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57 i = data[0].rfind(',')
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58 if i >= 0:
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59 data[0] = data[0][i+1:]
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60 if len(data) == 3: # RFC 850 date, deprecated
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61 stuff = data[0].split('-')
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62 if len(stuff) == 3:
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63 data = stuff + data[1:]
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64 if len(data) == 4:
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65 s = data[3]
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66 i = s.find('+')
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67 if i > 0:
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68 data[3:] = [s[:i], s[i+1:]]
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69 else:
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70 data.append('') # Dummy tz
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71 if len(data) < 5:
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72 return None
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73 data = data[:5]
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74 [dd, mm, yy, tm, tz] = data
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75 mm = mm.lower()
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76 if mm not in _monthnames:
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77 dd, mm = mm, dd.lower()
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78 if mm not in _monthnames:
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79 return None
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80 mm = _monthnames.index(mm) + 1
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81 if mm > 12:
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82 mm -= 12
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83 if dd[-1] == ',':
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84 dd = dd[:-1]
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85 i = yy.find(':')
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86 if i > 0:
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87 yy, tm = tm, yy
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88 if yy[-1] == ',':
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89 yy = yy[:-1]
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90 if not yy[0].isdigit():
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91 yy, tz = tz, yy
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92 if tm[-1] == ',':
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93 tm = tm[:-1]
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94 tm = tm.split(':')
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95 if len(tm) == 2:
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96 [thh, tmm] = tm
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97 tss = '0'
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98 elif len(tm) == 3:
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99 [thh, tmm, tss] = tm
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100 else:
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101 return None
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102 try:
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103 yy = int(yy)
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104 dd = int(dd)
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105 thh = int(thh)
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106 tmm = int(tmm)
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107 tss = int(tss)
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108 except ValueError:
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109 return None
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110 # Check for a yy specified in two-digit format, then convert it to the
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111 # appropriate four-digit format, according to the POSIX standard. RFC 822
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112 # calls for a two-digit yy, but RFC 2822 (which obsoletes RFC 822)
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113 # mandates a 4-digit yy. For more information, see the documentation for
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114 # the time module.
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115 if yy < 100:
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116 # The year is between 1969 and 1999 (inclusive).
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117 if yy > 68:
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118 yy += 1900
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119 # The year is between 2000 and 2068 (inclusive).
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120 else:
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121 yy += 2000
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122 tzoffset = None
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123 tz = tz.upper()
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124 if tz in _timezones:
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125 tzoffset = _timezones[tz]
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126 else:
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127 try:
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128 tzoffset = int(tz)
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129 except ValueError:
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130 pass
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131 # Convert a timezone offset into seconds ; -0500 -> -18000
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132 if tzoffset:
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133 if tzoffset < 0:
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diff changeset
134 tzsign = -1
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diff changeset
135 tzoffset = -tzoffset
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diff changeset
136 else:
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137 tzsign = 1
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138 tzoffset = tzsign * ( (tzoffset//100)*3600 + (tzoffset % 100)*60)
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139 # Daylight Saving Time flag is set to -1, since DST is unknown.
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140 return yy, mm, dd, thh, tmm, tss, 0, 1, -1, tzoffset
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parents:
diff changeset
141
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Guido van Rossum <guido@python.org>
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diff changeset
142
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diff changeset
143 def parsedate(data):
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144 """Convert a time string to a time tuple."""
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145 t = parsedate_tz(data)
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diff changeset
146 if isinstance(t, tuple):
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147 return t[:9]
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diff changeset
148 else:
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149 return t
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diff changeset
150
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151
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diff changeset
152 def mktime_tz(data):
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153 """Turn a 10-tuple as returned by parsedate_tz() into a UTC timestamp."""
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diff changeset
154 if data[9] is None:
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Guido van Rossum <guido@python.org>
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155 # No zone info, so localtime is better assumption than GMT
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diff changeset
156 return time.mktime(data[:8] + (-1,))
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diff changeset
157 else:
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158 t = time.mktime(data[:8] + (0,))
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159 return t - data[9] - time.timezone
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Guido van Rossum <guido@python.org>
parents:
diff changeset
160
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Guido van Rossum <guido@python.org>
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161
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Guido van Rossum <guido@python.org>
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diff changeset
162 def quote(str):
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163 """Add quotes around a string."""
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164 return str.replace('\\', '\\\\').replace('"', '\\"')
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Guido van Rossum <guido@python.org>
parents:
diff changeset
165
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Guido van Rossum <guido@python.org>
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166
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Guido van Rossum <guido@python.org>
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167 class AddrlistClass:
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Guido van Rossum <guido@python.org>
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168 """Address parser class by Ben Escoto.
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Guido van Rossum <guido@python.org>
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169
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Guido van Rossum <guido@python.org>
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diff changeset
170 To understand what this class does, it helps to have a copy of RFC 2822 in
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Guido van Rossum <guido@python.org>
parents:
diff changeset
171 front of you.
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Guido van Rossum <guido@python.org>
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diff changeset
172
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173 Note: this class interface is deprecated and may be removed in the future.
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Guido van Rossum <guido@python.org>
parents:
diff changeset
174 Use rfc822.AddressList instead.
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Guido van Rossum <guido@python.org>
parents:
diff changeset
175 """
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Guido van Rossum <guido@python.org>
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176
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177 def __init__(self, field):
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178 """Initialize a new instance.
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Guido van Rossum <guido@python.org>
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diff changeset
179
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Guido van Rossum <guido@python.org>
parents:
diff changeset
180 `field' is an unparsed address header field, containing
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Guido van Rossum <guido@python.org>
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diff changeset
181 one or more addresses.
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Guido van Rossum <guido@python.org>
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182 """
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parents:
diff changeset
183 self.specials = '()<>@,:;.\"[]'
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Guido van Rossum <guido@python.org>
parents:
diff changeset
184 self.pos = 0
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Guido van Rossum <guido@python.org>
parents:
diff changeset
185 self.LWS = ' \t'
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Guido van Rossum <guido@python.org>
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diff changeset
186 self.CR = '\r\n'
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Guido van Rossum <guido@python.org>
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diff changeset
187 self.FWS = self.LWS + self.CR
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Guido van Rossum <guido@python.org>
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diff changeset
188 self.atomends = self.specials + self.LWS + self.CR
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diff changeset
189 # Note that RFC 2822 now specifies `.' as obs-phrase, meaning that it
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Guido van Rossum <guido@python.org>
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diff changeset
190 # is obsolete syntax. RFC 2822 requires that we recognize obsolete
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Guido van Rossum <guido@python.org>
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diff changeset
191 # syntax, so allow dots in phrases.
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diff changeset
192 self.phraseends = self.atomends.replace('.', '')
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Guido van Rossum <guido@python.org>
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diff changeset
193 self.field = field
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diff changeset
194 self.commentlist = []
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diff changeset
195
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diff changeset
196 def gotonext(self):
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197 """Parse up to the start of the next address."""
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Guido van Rossum <guido@python.org>
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diff changeset
198 while self.pos < len(self.field):
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diff changeset
199 if self.field[self.pos] in self.LWS + '\n\r':
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parents:
diff changeset
200 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
201 elif self.field[self.pos] == '(':
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Guido van Rossum <guido@python.org>
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diff changeset
202 self.commentlist.append(self.getcomment())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
203 else:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
204 break
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Guido van Rossum <guido@python.org>
parents:
diff changeset
205
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Guido van Rossum <guido@python.org>
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diff changeset
206 def getaddrlist(self):
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diff changeset
207 """Parse all addresses.
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Guido van Rossum <guido@python.org>
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diff changeset
208
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209 Returns a list containing all of the addresses.
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Guido van Rossum <guido@python.org>
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diff changeset
210 """
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Guido van Rossum <guido@python.org>
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diff changeset
211 result = []
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diff changeset
212 while self.pos < len(self.field):
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diff changeset
213 ad = self.getaddress()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
214 if ad:
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Guido van Rossum <guido@python.org>
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diff changeset
215 result += ad
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Guido van Rossum <guido@python.org>
parents:
diff changeset
216 else:
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Guido van Rossum <guido@python.org>
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diff changeset
217 result.append(('', ''))
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Guido van Rossum <guido@python.org>
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diff changeset
218 return result
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Guido van Rossum <guido@python.org>
parents:
diff changeset
219
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Guido van Rossum <guido@python.org>
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diff changeset
220 def getaddress(self):
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Guido van Rossum <guido@python.org>
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diff changeset
221 """Parse the next address."""
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Guido van Rossum <guido@python.org>
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diff changeset
222 self.commentlist = []
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Guido van Rossum <guido@python.org>
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diff changeset
223 self.gotonext()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
224
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Guido van Rossum <guido@python.org>
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diff changeset
225 oldpos = self.pos
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Guido van Rossum <guido@python.org>
parents:
diff changeset
226 oldcl = self.commentlist
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Guido van Rossum <guido@python.org>
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diff changeset
227 plist = self.getphraselist()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
228
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Guido van Rossum <guido@python.org>
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diff changeset
229 self.gotonext()
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Guido van Rossum <guido@python.org>
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diff changeset
230 returnlist = []
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Guido van Rossum <guido@python.org>
parents:
diff changeset
231
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
232 if self.pos >= len(self.field):
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Guido van Rossum <guido@python.org>
parents:
diff changeset
233 # Bad email address technically, no domain.
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Guido van Rossum <guido@python.org>
parents:
diff changeset
234 if plist:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
235 returnlist = [(SPACE.join(self.commentlist), plist[0])]
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Guido van Rossum <guido@python.org>
parents:
diff changeset
236
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
237 elif self.field[self.pos] in '.@':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
238 # email address is just an addrspec
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Guido van Rossum <guido@python.org>
parents:
diff changeset
239 # this isn't very efficient since we start over
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Guido van Rossum <guido@python.org>
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diff changeset
240 self.pos = oldpos
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Guido van Rossum <guido@python.org>
parents:
diff changeset
241 self.commentlist = oldcl
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Guido van Rossum <guido@python.org>
parents:
diff changeset
242 addrspec = self.getaddrspec()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
243 returnlist = [(SPACE.join(self.commentlist), addrspec)]
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Guido van Rossum <guido@python.org>
parents:
diff changeset
244
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
245 elif self.field[self.pos] == ':':
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Guido van Rossum <guido@python.org>
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diff changeset
246 # address is a group
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Guido van Rossum <guido@python.org>
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diff changeset
247 returnlist = []
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Guido van Rossum <guido@python.org>
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diff changeset
248
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Guido van Rossum <guido@python.org>
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diff changeset
249 fieldlen = len(self.field)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
250 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
251 while self.pos < len(self.field):
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Guido van Rossum <guido@python.org>
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diff changeset
252 self.gotonext()
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diff changeset
253 if self.pos < fieldlen and self.field[self.pos] == ';':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
254 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
255 break
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Guido van Rossum <guido@python.org>
parents:
diff changeset
256 returnlist = returnlist + self.getaddress()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
257
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
258 elif self.field[self.pos] == '<':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
259 # Address is a phrase then a route addr
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Guido van Rossum <guido@python.org>
parents:
diff changeset
260 routeaddr = self.getrouteaddr()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
261
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Guido van Rossum <guido@python.org>
parents:
diff changeset
262 if self.commentlist:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
263 returnlist = [(SPACE.join(plist) + ' (' +
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
264 ' '.join(self.commentlist) + ')', routeaddr)]
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Guido van Rossum <guido@python.org>
parents:
diff changeset
265 else:
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Guido van Rossum <guido@python.org>
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diff changeset
266 returnlist = [(SPACE.join(plist), routeaddr)]
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Guido van Rossum <guido@python.org>
parents:
diff changeset
267
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
268 else:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
269 if plist:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
270 returnlist = [(SPACE.join(self.commentlist), plist[0])]
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parents:
diff changeset
271 elif self.field[self.pos] in self.specials:
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parents:
diff changeset
272 self.pos += 1
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parents:
diff changeset
273
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diff changeset
274 self.gotonext()
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diff changeset
275 if self.pos < len(self.field) and self.field[self.pos] == ',':
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diff changeset
276 self.pos += 1
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diff changeset
277 return returnlist
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diff changeset
278
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diff changeset
279 def getrouteaddr(self):
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parents:
diff changeset
280 """Parse a route address (Return-path value).
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diff changeset
281
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diff changeset
282 This method just skips all the route stuff and returns the addrspec.
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diff changeset
283 """
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Guido van Rossum <guido@python.org>
parents:
diff changeset
284 if self.field[self.pos] != '<':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
285 return
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
286
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Guido van Rossum <guido@python.org>
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diff changeset
287 expectroute = False
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diff changeset
288 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
289 self.gotonext()
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diff changeset
290 adlist = ''
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diff changeset
291 while self.pos < len(self.field):
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diff changeset
292 if expectroute:
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diff changeset
293 self.getdomain()
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diff changeset
294 expectroute = False
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diff changeset
295 elif self.field[self.pos] == '>':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
296 self.pos += 1
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parents:
diff changeset
297 break
d5f3c2f416f2 Copying the email package back, despite its failings.
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diff changeset
298 elif self.field[self.pos] == '@':
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Guido van Rossum <guido@python.org>
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diff changeset
299 self.pos += 1
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Guido van Rossum <guido@python.org>
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diff changeset
300 expectroute = True
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diff changeset
301 elif self.field[self.pos] == ':':
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Guido van Rossum <guido@python.org>
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diff changeset
302 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
303 else:
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Guido van Rossum <guido@python.org>
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diff changeset
304 adlist = self.getaddrspec()
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Guido van Rossum <guido@python.org>
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diff changeset
305 self.pos += 1
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Guido van Rossum <guido@python.org>
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diff changeset
306 break
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Guido van Rossum <guido@python.org>
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diff changeset
307 self.gotonext()
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Guido van Rossum <guido@python.org>
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diff changeset
308
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Guido van Rossum <guido@python.org>
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diff changeset
309 return adlist
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Guido van Rossum <guido@python.org>
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diff changeset
310
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Guido van Rossum <guido@python.org>
parents:
diff changeset
311 def getaddrspec(self):
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diff changeset
312 """Parse an RFC 2822 addr-spec."""
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diff changeset
313 aslist = []
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Guido van Rossum <guido@python.org>
parents:
diff changeset
314
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Guido van Rossum <guido@python.org>
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diff changeset
315 self.gotonext()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
316 while self.pos < len(self.field):
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Guido van Rossum <guido@python.org>
parents:
diff changeset
317 if self.field[self.pos] == '.':
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diff changeset
318 aslist.append('.')
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Guido van Rossum <guido@python.org>
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diff changeset
319 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
320 elif self.field[self.pos] == '"':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
321 aslist.append('"%s"' % self.getquote())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
322 elif self.field[self.pos] in self.atomends:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
323 break
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
324 else:
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Guido van Rossum <guido@python.org>
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diff changeset
325 aslist.append(self.getatom())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
326 self.gotonext()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
327
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Guido van Rossum <guido@python.org>
parents:
diff changeset
328 if self.pos >= len(self.field) or self.field[self.pos] != '@':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
329 return EMPTYSTRING.join(aslist)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
330
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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diff changeset
331 aslist.append('@')
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Guido van Rossum <guido@python.org>
parents:
diff changeset
332 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
333 self.gotonext()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
334 return EMPTYSTRING.join(aslist) + self.getdomain()
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Guido van Rossum <guido@python.org>
parents:
diff changeset
335
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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diff changeset
336 def getdomain(self):
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Guido van Rossum <guido@python.org>
parents:
diff changeset
337 """Get the complete domain name from an address."""
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Guido van Rossum <guido@python.org>
parents:
diff changeset
338 sdlist = []
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Guido van Rossum <guido@python.org>
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diff changeset
339 while self.pos < len(self.field):
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Guido van Rossum <guido@python.org>
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diff changeset
340 if self.field[self.pos] in self.LWS:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
341 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
342 elif self.field[self.pos] == '(':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
343 self.commentlist.append(self.getcomment())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
344 elif self.field[self.pos] == '[':
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Guido van Rossum <guido@python.org>
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diff changeset
345 sdlist.append(self.getdomainliteral())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
346 elif self.field[self.pos] == '.':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
347 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
348 sdlist.append('.')
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Guido van Rossum <guido@python.org>
parents:
diff changeset
349 elif self.field[self.pos] in self.atomends:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
350 break
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
351 else:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
352 sdlist.append(self.getatom())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
353 return EMPTYSTRING.join(sdlist)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
354
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Guido van Rossum <guido@python.org>
parents:
diff changeset
355 def getdelimited(self, beginchar, endchars, allowcomments=True):
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Guido van Rossum <guido@python.org>
parents:
diff changeset
356 """Parse a header fragment delimited by special characters.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
357
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
358 `beginchar' is the start character for the fragment.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
359 If self is not looking at an instance of `beginchar' then
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
360 getdelimited returns the empty string.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
361
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
362 `endchars' is a sequence of allowable end-delimiting characters.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
363 Parsing stops when one of these is encountered.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
364
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
365 If `allowcomments' is non-zero, embedded RFC 2822 comments are allowed
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
366 within the parsed fragment.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
367 """
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
368 if self.field[self.pos] != beginchar:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
369 return ''
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
370
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
371 slist = ['']
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Guido van Rossum <guido@python.org>
parents:
diff changeset
372 quote = False
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Guido van Rossum <guido@python.org>
parents:
diff changeset
373 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
374 while self.pos < len(self.field):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
375 if quote:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
376 slist.append(self.field[self.pos])
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Guido van Rossum <guido@python.org>
parents:
diff changeset
377 quote = False
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Guido van Rossum <guido@python.org>
parents:
diff changeset
378 elif self.field[self.pos] in endchars:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
379 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
diff changeset
380 break
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
381 elif allowcomments and self.field[self.pos] == '(':
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
382 slist.append(self.getcomment())
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
383 continue # have already advanced pos from getcomment
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
384 elif self.field[self.pos] == '\\':
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Guido van Rossum <guido@python.org>
parents:
diff changeset
385 quote = True
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
386 else:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
387 slist.append(self.field[self.pos])
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
388 self.pos += 1
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
389
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
390 return EMPTYSTRING.join(slist)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
391
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
392 def getquote(self):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
393 """Get a quote-delimited fragment from self's field."""
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
394 return self.getdelimited('"', '"\r', False)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
395
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
396 def getcomment(self):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
397 """Get a parenthesis-delimited fragment from self's field."""
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
398 return self.getdelimited('(', ')\r', True)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
399
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
400 def getdomainliteral(self):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
401 """Parse an RFC 2822 domain-literal."""
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
402 return '[%s]' % self.getdelimited('[', ']\r', False)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
403
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
404 def getatom(self, atomends=None):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
405 """Parse an RFC 2822 atom.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
406
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
407 Optional atomends specifies a different set of end token delimiters
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
408 (the default is to use self.atomends). This is used e.g. in
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
409 getphraselist() since phrase endings must not include the `.' (which
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
410 is legal in phrases)."""
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
411 atomlist = ['']
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
412 if atomends is None:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
413 atomends = self.atomends
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Guido van Rossum <guido@python.org>
parents:
diff changeset
414
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
415 while self.pos < len(self.field):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
416 if self.field[self.pos] in atomends:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
417 break
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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418 else:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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419 atomlist.append(self.field[self.pos])
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Guido van Rossum <guido@python.org>
parents:
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420 self.pos += 1
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Guido van Rossum <guido@python.org>
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421
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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422 return EMPTYSTRING.join(atomlist)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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423
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Guido van Rossum <guido@python.org>
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424 def getphraselist(self):
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Guido van Rossum <guido@python.org>
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425 """Parse a sequence of RFC 2822 phrases.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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426
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Guido van Rossum <guido@python.org>
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427 A phrase is a sequence of words, which are in turn either RFC 2822
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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diff changeset
428 atoms or quoted-strings. Phrases are canonicalized by squeezing all
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
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429 runs of continuous whitespace into one space.
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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430 """
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Guido van Rossum <guido@python.org>
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431 plist = []
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Guido van Rossum <guido@python.org>
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432
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Guido van Rossum <guido@python.org>
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433 while self.pos < len(self.field):
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Guido van Rossum <guido@python.org>
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diff changeset
434 if self.field[self.pos] in self.FWS:
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Guido van Rossum <guido@python.org>
parents:
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435 self.pos += 1
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Guido van Rossum <guido@python.org>
parents:
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436 elif self.field[self.pos] == '"':
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Guido van Rossum <guido@python.org>
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437 plist.append(self.getquote())
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Guido van Rossum <guido@python.org>
parents:
diff changeset
438 elif self.field[self.pos] == '(':
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Guido van Rossum <guido@python.org>
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439 self.commentlist.append(self.getcomment())
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Guido van Rossum <guido@python.org>
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diff changeset
440 elif self.field[self.pos] in self.phraseends:
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Guido van Rossum <guido@python.org>
parents:
diff changeset
441 break
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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442 else:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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443 plist.append(self.getatom(self.phraseends))
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
444
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
445 return plist
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
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446
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
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447 class AddressList(AddrlistClass):
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Guido van Rossum <guido@python.org>
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448 """An AddressList encapsulates a list of parsed RFC 2822 addresses."""
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
449 def __init__(self, field):
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Guido van Rossum <guido@python.org>
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diff changeset
450 AddrlistClass.__init__(self, field)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
451 if field:
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Guido van Rossum <guido@python.org>
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452 self.addresslist = self.getaddrlist()
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
453 else:
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Guido van Rossum <guido@python.org>
parents:
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454 self.addresslist = []
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
455
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
456 def __len__(self):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
457 return len(self.addresslist)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
458
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
459 def __add__(self, other):
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Guido van Rossum <guido@python.org>
parents:
diff changeset
460 # Set union
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
461 newaddr = AddressList(None)
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Guido van Rossum <guido@python.org>
parents:
diff changeset
462 newaddr.addresslist = self.addresslist[:]
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
463 for x in other.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
464 if not x in self.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
465 newaddr.addresslist.append(x)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
466 return newaddr
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
467
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
468 def __iadd__(self, other):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
469 # Set union, in-place
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
470 for x in other.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
471 if not x in self.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
472 self.addresslist.append(x)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
473 return self
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
474
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
475 def __sub__(self, other):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
476 # Set difference
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
477 newaddr = AddressList(None)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
478 for x in self.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
479 if not x in other.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
480 newaddr.addresslist.append(x)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
481 return newaddr
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
482
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
483 def __isub__(self, other):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
484 # Set difference, in-place
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
485 for x in other.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
486 if x in self.addresslist:
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
487 self.addresslist.remove(x)
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
488 return self
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
489
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
490 def __getitem__(self, index):
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
491 # Make indexing, slices, and 'in' work
d5f3c2f416f2 Copying the email package back, despite its failings.
Guido van Rossum <guido@python.org>
parents:
diff changeset
492 return self.addresslist[index]