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"""
pygments.lexers.asc
~~~~~~~~~~~~~~~~~~~
Lexer for various ASCII armored files.
:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, bygroups
from pygments.token import Comment, Generic, Name, Operator, String, Whitespace
__all__ = ['AscLexer']
class AscLexer(RegexLexer):
"""
Lexer for ASCII armored files, containing `-----BEGIN/END ...-----` wrapped
base64 data.
"""
name = 'ASCII armored'
aliases = ['asc', 'pem']
filenames = [
'*.asc', # PGP; *.gpg, *.pgp, and *.sig too, but those can be binary
'*.pem', # X.509; *.cer, *.crt, *.csr, and key etc too, but those can be binary
'id_dsa', 'id_ecdsa', 'id_ecdsa_sk', 'id_ed25519', 'id_ed25519_sk',
'id_rsa', # SSH private keys
]
mimetypes = ['application/pgp-keys', 'application/pgp-encrypted',
'application/pgp-signature', 'application/pem-certificate-chain']
url = 'https://www.openpgp.org'
version_added = '2.10'
flags = re.MULTILINE
tokens = {
'root': [
(r'\s+', Whitespace),
(r'^-----BEGIN [^\n]+-----$', Generic.Heading, 'data'),
(r'\S+', Comment),
],
'data': [
(r'\s+', Whitespace),
(r'^([^:]+)(:)([ \t]+)(.*)',
bygroups(Name.Attribute, Operator, Whitespace, String)),
(r'^-----END [^\n]+-----$', Generic.Heading, 'root'),
(r'\S+', String),
],
}
def analyse_text(text):
if re.search(r'^-----BEGIN [^\n]+-----\r?\n', text):
return True