125 lines
4.1 KiB
Python
125 lines
4.1 KiB
Python
|
"""
|
||
|
|
pygments.formatter
|
||
|
|
~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
Base formatter class.
|
||
|
|
|
||
|
|
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
|
||
|
|
:license: BSD, see LICENSE for details.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import codecs
|
||
|
|
|
||
|
|
from pygments.util import get_bool_opt
|
||
|
|
from pygments.styles import get_style_by_name
|
||
|
|
|
||
|
|
__all__ = ['Formatter']
|
||
|
|
|
||
|
|
|
||
|
|
def _lookup_style(style):
|
||
|
|
if isinstance(style, str):
|
||
|
|
return get_style_by_name(style)
|
||
|
|
return style
|
||
|
|
|
||
|
|
|
||
|
|
class Formatter:
|
||
|
|
"""
|
||
|
|
Converts a token stream to text.
|
||
|
|
|
||
|
|
Formatters should have attributes to help selecting them. These
|
||
|
|
are similar to the corresponding :class:`~pygments.lexer.Lexer`
|
||
|
|
attributes.
|
||
|
|
|
||
|
|
.. autoattribute:: name
|
||
|
|
:no-value:
|
||
|
|
|
||
|
|
.. autoattribute:: aliases
|
||
|
|
:no-value:
|
||
|
|
|
||
|
|
.. autoattribute:: filenames
|
||
|
|
:no-value:
|
||
|
|
|
||
|
|
You can pass options as keyword arguments to the constructor.
|
||
|
|
All formatters accept these basic options:
|
||
|
|
|
||
|
|
``style``
|
||
|
|
The style to use, can be a string or a Style subclass
|
||
|
|
(default: "default"). Not used by e.g. the
|
||
|
|
TerminalFormatter.
|
||
|
|
``full``
|
||
|
|
Tells the formatter to output a "full" document, i.e.
|
||
|
|
a complete self-contained document. This doesn't have
|
||
|
|
any effect for some formatters (default: false).
|
||
|
|
``title``
|
||
|
|
If ``full`` is true, the title that should be used to
|
||
|
|
caption the document (default: '').
|
||
|
|
``encoding``
|
||
|
|
If given, must be an encoding name. This will be used to
|
||
|
|
convert the Unicode token strings to byte strings in the
|
||
|
|
output. If it is "" or None, Unicode strings will be written
|
||
|
|
to the output file, which most file-like objects do not
|
||
|
|
support (default: None).
|
||
|
|
``outencoding``
|
||
|
|
Overrides ``encoding`` if given.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
#: Full name for the formatter, in human-readable form.
|
||
|
|
name = None
|
||
|
|
|
||
|
|
#: A list of short, unique identifiers that can be used to lookup
|
||
|
|
#: the formatter from a list, e.g. using :func:`.get_formatter_by_name()`.
|
||
|
|
aliases = []
|
||
|
|
|
||
|
|
#: A list of fnmatch patterns that match filenames for which this
|
||
|
|
#: formatter can produce output. The patterns in this list should be unique
|
||
|
|
#: among all formatters.
|
||
|
|
filenames = []
|
||
|
|
|
||
|
|
#: If True, this formatter outputs Unicode strings when no encoding
|
||
|
|
#: option is given.
|
||
|
|
unicodeoutput = True
|
||
|
|
|
||
|
|
def __init__(self, **options):
|
||
|
|
"""
|
||
|
|
As with lexers, this constructor takes arbitrary optional arguments,
|
||
|
|
and if you override it, you should first process your own options, then
|
||
|
|
call the base class implementation.
|
||
|
|
"""
|
||
|
|
self.style = _lookup_style(options.get('style', 'default'))
|
||
|
|
self.full = get_bool_opt(options, 'full', False)
|
||
|
|
self.title = options.get('title', '')
|
||
|
|
self.encoding = options.get('encoding', None) or None
|
||
|
|
if self.encoding in ('guess', 'chardet'):
|
||
|
|
# can happen for e.g. pygmentize -O encoding=guess
|
||
|
|
self.encoding = 'utf-8'
|
||
|
|
self.encoding = options.get('outencoding') or self.encoding
|
||
|
|
self.options = options
|
||
|
|
|
||
|
|
def get_style_defs(self, arg=''):
|
||
|
|
"""
|
||
|
|
This method must return statements or declarations suitable to define
|
||
|
|
the current style for subsequent highlighted text (e.g. CSS classes
|
||
|
|
in the `HTMLFormatter`).
|
||
|
|
|
||
|
|
The optional argument `arg` can be used to modify the generation and
|
||
|
|
is formatter dependent (it is standardized because it can be given on
|
||
|
|
the command line).
|
||
|
|
|
||
|
|
This method is called by the ``-S`` :doc:`command-line option <cmdline>`,
|
||
|
|
the `arg` is then given by the ``-a`` option.
|
||
|
|
"""
|
||
|
|
return ''
|
||
|
|
|
||
|
|
def format(self, tokensource, outfile):
|
||
|
|
"""
|
||
|
|
This method must format the tokens from the `tokensource` iterable and
|
||
|
|
write the formatted version to the file object `outfile`.
|
||
|
|
|
||
|
|
Formatter options can control how exactly the tokens are converted.
|
||
|
|
"""
|
||
|
|
if self.encoding:
|
||
|
|
# wrap the outfile in a StreamWriter
|
||
|
|
outfile = codecs.lookup(self.encoding)[3](outfile)
|
||
|
|
return self.format_unencoded(tokensource, outfile)
|