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""" | |
pygments.plugin | |
~~~~~~~~~~~~~~~ | |
Pygments plugin interface. By default, this tries to use | |
``importlib.metadata``, which is in the Python standard | |
library since Python 3.8, or its ``importlib_metadata`` | |
backport for earlier versions of Python. It falls back on | |
``pkg_resources`` if not found. Finally, if ``pkg_resources`` | |
is not found either, no plugins are loaded at all. | |
lexer plugins:: | |
[pygments.lexers] | |
yourlexer = yourmodule:YourLexer | |
formatter plugins:: | |
[pygments.formatters] | |
yourformatter = yourformatter:YourFormatter | |
/.ext = yourformatter:YourFormatter | |
As you can see, you can define extensions for the formatter | |
with a leading slash. | |
syntax plugins:: | |
[pygments.styles] | |
yourstyle = yourstyle:YourStyle | |
filter plugin:: | |
[pygments.filter] | |
yourfilter = yourfilter:YourFilter | |
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS. | |
:license: BSD, see LICENSE for details. | |
""" | |
LEXER_ENTRY_POINT = 'pygments.lexers' | |
FORMATTER_ENTRY_POINT = 'pygments.formatters' | |
STYLE_ENTRY_POINT = 'pygments.styles' | |
FILTER_ENTRY_POINT = 'pygments.filters' | |
def iter_entry_points(group_name): | |
try: | |
from importlib.metadata import entry_points | |
except ImportError: | |
try: | |
from importlib_metadata import entry_points | |
except ImportError: | |
try: | |
from pip._vendor.pkg_resources import iter_entry_points | |
except (ImportError, OSError): | |
return [] | |
else: | |
return iter_entry_points(group_name) | |
groups = entry_points() | |
if hasattr(groups, 'select'): | |
# New interface in Python 3.10 and newer versions of the | |
# importlib_metadata backport. | |
return groups.select(group=group_name) | |
else: | |
# Older interface, deprecated in Python 3.10 and recent | |
# importlib_metadata, but we need it in Python 3.8 and 3.9. | |
return groups.get(group_name, []) | |
def find_plugin_lexers(): | |
for entrypoint in iter_entry_points(LEXER_ENTRY_POINT): | |
yield entrypoint.load() | |
def find_plugin_formatters(): | |
for entrypoint in iter_entry_points(FORMATTER_ENTRY_POINT): | |
yield entrypoint.name, entrypoint.load() | |
def find_plugin_styles(): | |
for entrypoint in iter_entry_points(STYLE_ENTRY_POINT): | |
yield entrypoint.name, entrypoint.load() | |
def find_plugin_filters(): | |
for entrypoint in iter_entry_points(FILTER_ENTRY_POINT): | |
yield entrypoint.name, entrypoint.load() | |