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# -*- coding: utf-8 -*-
"""
pygments.formatter
~~~~~~~~~~~~~~~~~~
Base formatter class.
:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import codecs
from pygments.util import get_bool_opt, string_types
from pygments.styles import get_style_by_name
__all__ = ['Formatter']
def _lookup_style(style):
if isinstance(style, string_types):
return get_style_by_name(style)
return style
class Formatter(object):
"""
Converts a token stream to text.
Options accepted:
``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.
"""
#: Name of the formatter
name = None
#: Shortcuts for the formatter
aliases = []
#: fn match rules
filenames = []
#: If True, this formatter outputs Unicode strings when no encoding
#: option is given.
unicodeoutput = True
def __init__(self, **options):
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=''):
"""
Return the style definitions for the current style as a string.
``arg`` is an additional argument whose meaning depends on the
formatter used. Note that ``arg`` can also be a list or tuple
for some formatters like the html formatter.
"""
return ''
def format(self, tokensource, outfile):
"""
Format ``tokensource``, an iterable of ``(tokentype, tokenstring)``
tuples and write it into ``outfile``.
"""
if self.encoding:
# wrap the outfile in a StreamWriter
outfile = codecs.lookup(self.encoding)[3](outfile)
return self.format_unencoded(tokensource, outfile)
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