codekingpro/portable-devtools

1"""2    pygments.lexers.dns3    ~~~~~~~~~~~~~~~~~~~4 5    Pygments lexers for DNS6 7    :copyright: Copyright 2006-present by the Pygments team, see AUTHORS.8    :license: BSD, see LICENSE for details.9"""10 11import re12 13from pygments.token import Comment, Operator, Keyword, Name, String, \14    Number, Punctuation, Whitespace, Literal15from pygments.lexer import RegexLexer, bygroups, include16 17__all__ = ['DnsZoneLexer']18 19 20CLASSES = [21    "IN",22    "CS",23    "CH",24    "HS",25]26 27CLASSES_RE = "(" + "|".join(CLASSES) + ')'28 29 30class DnsZoneLexer(RegexLexer):31 32    """33    Lexer for DNS zone file34    """35 36    flags = re.MULTILINE37 38    name = 'Zone'39    aliases = ['zone']40    filenames = [ "*.zone" ]41    url = "https://datatracker.ietf.org/doc/html/rfc1035"42    mimetypes = ['text/dns']43    version_added = '2.16'44 45    tokens = {46       'root': [47            # Empty/comment line:48            (r'([ \t]*)(;.*)(\n)', bygroups(Whitespace, Comment.Single, Whitespace)),49            # Special directives:50            (r'^\$ORIGIN\b', Keyword, 'values'),51            (r'^\$TTL\b', Keyword, 'values'),52            (r'^\$INCLUDE\b', Comment.Preproc, 'include'),53            # TODO, $GENERATE https://bind9.readthedocs.io/en/v9.18.14/chapter3.html#soa-rr54            (r'^\$[A-Z]+\b', Keyword, 'values'),55            # Records:56            # <domain-name> [<TTL>] [<class>] <type> <RDATA> [<comment>]57            (r'^(@)([ \t]+)(?:([0-9]+[smhdw]?)([ \t]+))?(?:' + CLASSES_RE + "([ \t]+))?([A-Z]+)([ \t]+)", 58                bygroups(Operator, Whitespace, Number.Integer, Whitespace, Name.Class, Whitespace, Keyword.Type, Whitespace),59                "values"),60            (r'^([^ \t\n]*)([ \t]+)(?:([0-9]+[smhdw]?)([ \t]+))?(?:' + CLASSES_RE + "([ \t]+))?([A-Z]+)([ \t]+)", 61                bygroups(Name, Whitespace, Number.Integer, Whitespace, Name.Class, Whitespace, Keyword.Type, Whitespace),62                "values"),63            # <domain-name> [<class>] [<TTL>] <type> <RDATA> [<comment>]64            (r'^(Operator)([ \t]+)(?:' + CLASSES_RE + "([ \t]+))?(?:([0-9]+[smhdw]?)([ \t]+))?([A-Z]+)([ \t]+)", 65                bygroups(Name, Whitespace, Number.Integer, Whitespace, Name.Class, Whitespace, Keyword.Type, Whitespace),66                "values"),67            (r'^([^ \t\n]*)([ \t]+)(?:' + CLASSES_RE + "([ \t]+))?(?:([0-9]+[smhdw]?)([ \t]+))?([A-Z]+)([ \t]+)", 68                bygroups(Name, Whitespace, Number.Integer, Whitespace, Name.Class, Whitespace, Keyword.Type, Whitespace),69                "values"),70        ],71        # Parsing values:72        'values': [73            (r'\n', Whitespace, "#pop"),74            (r'\(', Punctuation, 'nested'),75            include('simple-value'),76        ],77        # Parsing nested values (...):78        'nested': [79            (r'\)', Punctuation, "#pop"),80            include('multiple-simple-values'),81        ],82        # Parsing values:83        'simple-value': [84            (r'(;.*)', bygroups(Comment.Single)),85            (r'[ \t]+', Whitespace),86            (r"@\b", Operator),87            ('"', String, 'string'),88            (r'[0-9]+[smhdw]?$', Number.Integer),89            (r'([0-9]+[smhdw]?)([ \t]+)', bygroups(Number.Integer, Whitespace)),90            (r'\S+', Literal),91        ],92        'multiple-simple-values': [93            include('simple-value'),94            (r'[\n]+', Whitespace),95        ],96        'include': [97            (r'([ \t]+)([^ \t\n]+)([ \t]+)([-\._a-zA-Z]+)([ \t]+)(;.*)?$',98             bygroups(Whitespace, Comment.PreprocFile, Whitespace, Name, Whitespace, Comment.Single), '#pop'),99            (r'([ \t]+)([^ \t\n]+)([ \t\n]+)$', bygroups(Whitespace, Comment.PreprocFile, Whitespace), '#pop'),100        ],101        "string": [102            (r'\\"', String),103            (r'"', String, "#pop"),104            (r'[^"]+', String),105        ]106    }107 108    def analyse_text(text):109        return text.startswith("$ORIGIN")110