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""" |
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pygments.lexers.special |
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~~~~~~~~~~~~~~~~~~~~~~~ |
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Special lexers. |
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:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS. |
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:license: BSD, see LICENSE for details. |
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""" |
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import ast |
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from pygments.lexer import Lexer, line_re |
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from pygments.token import Token, Error, Text, Generic |
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from pygments.util import get_choice_opt |
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__all__ = ['TextLexer', 'OutputLexer', 'RawTokenLexer'] |
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class TextLexer(Lexer): |
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""" |
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"Null" lexer, doesn't highlight anything. |
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""" |
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name = 'Text only' |
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aliases = ['text'] |
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filenames = ['*.txt'] |
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mimetypes = ['text/plain'] |
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url = "" |
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version_added = '' |
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priority = 0.01 |
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def get_tokens_unprocessed(self, text): |
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yield 0, Text, text |
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def analyse_text(text): |
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return TextLexer.priority |
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class OutputLexer(Lexer): |
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""" |
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Simple lexer that highlights everything as ``Token.Generic.Output``. |
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""" |
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name = 'Text output' |
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aliases = ['output'] |
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url = "" |
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version_added = '2.10' |
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_example = "output/output" |
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def get_tokens_unprocessed(self, text): |
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yield 0, Generic.Output, text |
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_ttype_cache = {} |
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class RawTokenLexer(Lexer): |
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""" |
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Recreate a token stream formatted with the `RawTokenFormatter`. |
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Additional options accepted: |
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`compress` |
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If set to ``"gz"`` or ``"bz2"``, decompress the token stream with |
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the given compression algorithm before lexing (default: ``""``). |
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""" |
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name = 'Raw token data' |
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aliases = [] |
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filenames = [] |
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mimetypes = ['application/x-pygments-tokens'] |
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url = 'https://pygments.org/docs/formatters/#RawTokenFormatter' |
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version_added = '' |
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def __init__(self, **options): |
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self.compress = get_choice_opt(options, 'compress', |
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['', 'none', 'gz', 'bz2'], '') |
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Lexer.__init__(self, **options) |
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def get_tokens(self, text): |
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if self.compress: |
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if isinstance(text, str): |
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text = text.encode('latin1') |
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try: |
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if self.compress == 'gz': |
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import gzip |
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text = gzip.decompress(text) |
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elif self.compress == 'bz2': |
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import bz2 |
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text = bz2.decompress(text) |
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except OSError: |
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yield Error, text.decode('latin1') |
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if isinstance(text, bytes): |
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text = text.decode('latin1') |
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text = text.strip('\n') + '\n' |
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for i, t, v in self.get_tokens_unprocessed(text): |
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yield t, v |
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def get_tokens_unprocessed(self, text): |
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length = 0 |
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for match in line_re.finditer(text): |
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try: |
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ttypestr, val = match.group().rstrip().split('\t', 1) |
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ttype = _ttype_cache.get(ttypestr) |
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if not ttype: |
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ttype = Token |
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ttypes = ttypestr.split('.')[1:] |
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for ttype_ in ttypes: |
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if not ttype_ or not ttype_[0].isupper(): |
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raise ValueError('malformed token name') |
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ttype = getattr(ttype, ttype_) |
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_ttype_cache[ttypestr] = ttype |
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val = ast.literal_eval(val) |
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if not isinstance(val, str): |
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raise ValueError('expected str') |
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except (SyntaxError, ValueError): |
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val = match.group() |
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ttype = Error |
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yield length, ttype, val |
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length += len(val) |
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