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""" 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)