1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
"""
pygments.lexers.email
~~~~~~~~~~~~~~~~~~~~~
Lexer for the raw E-mail.
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, DelegatingLexer, bygroups
from pygments.lexers.mime import MIMELexer
from pygments.token import Text, Keyword, Name, String, Number, Comment
from pygments.util import get_bool_opt
__all__ = ["EmailLexer"]
class EmailHeaderLexer(RegexLexer):
"""
Sub-lexer for raw E-mail. This lexer only process header part of e-mail.
.. versionadded:: 2.5
"""
def __init__(self, **options):
super().__init__(**options)
self.highlight_x = get_bool_opt(options, "highlight-X-header", False)
def get_x_header_tokens(self, match):
if self.highlight_x:
# field
yield match.start(1), Name.Tag, match.group(1)
# content
default_actions = self.get_tokens_unprocessed(
match.group(2), stack=("root", "header"))
yield from default_actions
else:
# lowlight
yield match.start(1), Comment.Special, match.group(1)
yield match.start(2), Comment.Multiline, match.group(2)
tokens = {
"root": [
(r"^(?:[A-WYZ]|X400)[\w\-]*:", Name.Tag, "header"),
(r"^(X-(?:\w[\w\-]*:))([\s\S]*?\n)(?![ \t])", get_x_header_tokens),
],
"header": [
# folding
(r"\n[ \t]", Text.Whitespace),
(r"\n(?![ \t])", Text.Whitespace, "#pop"),
# keywords
(r"\bE?SMTPS?\b", Keyword),
(r"\b(?:HE|EH)LO\b", Keyword),
# mailbox
(r"[\w\.\-\+=]+@[\w\.\-]+", Name.Label),
(r"<[\w\.\-\+=]+@[\w\.\-]+>", Name.Label),
# domain
(r"\b(\w[\w\.-]*\.[\w\.-]*\w[a-zA-Z]+)\b", Name.Function),
# IPv4
(r"(?<=\b)(?:(?:25[0-5]|2[0-4][0-9]|1?[0-9][0-9]?)\.){3}(?:25[0"
r"-5]|2[0-4][0-9]|1?[0-9][0-9]?)(?=\b)",
Number.Integer),
# IPv6
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,7}:(?!\b)", Number.Hex),
(r"(?<=\b):((:[0-9a-fA-F]{1,4}){1,7}|:)(?=\b)", Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}(?=\b)", Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}(?=\b)", Number.Hex),
(r"(?<=\b)[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})(?=\b)", Number.Hex),
(r"(?<=\b)fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}(?=\b)", Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}(?=\b)", Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}(?=\b)",
Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}(?=\b)",
Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}(?=\b)",
Number.Hex),
(r"(?<=\b)::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}"
r"[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}"
r"[0-9])(?=\b)",
Number.Hex),
(r"(?<=\b)([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9])"
r"{0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])(?=\b)",
Number.Hex),
# Date time
(r"(?:(Sun|Mon|Tue|Wed|Thu|Fri|Sat),\s+)?(0[1-9]|[1-2]?[0-9]|3["
r"01])\s+(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+("
r"19[0-9]{2}|[2-9][0-9]{3})\s+(2[0-3]|[0-1][0-9]):([0-5][0-9])"
r"(?::(60|[0-5][0-9]))?(?:\.\d{1,5})?\s+([-\+][0-9]{2}[0-5][0-"
r"9]|\(?(?:UTC?|GMT|(?:E|C|M|P)(?:ST|ET|DT)|[A-IK-Z])\)?)",
Name.Decorator),
# RFC-2047 encoded string
(r"(=\?)([\w-]+)(\?)([BbQq])(\?)([\[\w!\"#$%&\'()*+,-./:;<=>@[\\"
r"\]^_`{|}~]+)(\?=)",
bygroups(String.Affix, Name.Constant, String.Affix, Keyword.Constant,
String.Affix, Number.Hex, String.Affix)),
# others
(r'[\s]+', Text.Whitespace),
(r'[\S]', Text),
],
}
class EmailLexer(DelegatingLexer):
"""
Lexer for raw E-mail.
Additional options accepted:
`highlight-X-header`
Highlight the fields of ``X-`` user-defined email header. (default:
``False``).
.. versionadded:: 2.5
"""
name = "E-mail"
aliases = ["email", "eml"]
filenames = ["*.eml"]
mimetypes = ["message/rfc822"]
def __init__(self, **options):
super().__init__(EmailHeaderLexer, MIMELexer, Comment, **options)
|
