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env/lib/python3.11/site-packages/pygments/lexers/asc.py

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+"""
+    pygments.lexers.asc
+    ~~~~~~~~~~~~~~~~~~~
+
+    Lexer for various ASCII armored files.
+
+    :copyright: Copyright 2006-2024 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