def __getattr__(self, name):
info = LEXERS.get(name)
if info:
_load_lexers(info[0])
cls = _lexer_cache[info[1]]
setattr(self, name, cls)
return cls
raise AttributeError(name)
def get_all_lexers():
"""
Return a generator of tuples in the form ``(name, aliases,
filenames, mimetypes)`` of all know lexers.
"""
for item in LEXERS.itervalues():
yield item[1:]
for lexer in find_plugin_lexers():
yield lexer.name, lexer.aliases, lexer.filenames, lexer.mimetypes
def _iter_lexerclasses():
"""
Return an iterator over all lexer classes.
"""
for module_name, name, _, _, _ in LEXERS.itervalues():
if name not in _lexer_cache:
_load_lexers(module_name)
yield _lexer_cache[name]
for lexer in find_plugin_lexers():
yield lexer
def get_lexer_for_mimetype(_mime, **options):
"""
Get a lexer for a mimetype.
"""
for modname, name, _, _, mimetypes in LEXERS.itervalues():
if _mime in mimetypes:
if name not in _lexer_cache:
_load_lexers(modname)
return _lexer_cache[name](**options)
for cls in find_plugin_lexers():
if _mime in cls.mimetypes:
return cls(**options)
raise ClassNotFound('no lexer for mimetype %r found' % _mime)
def get_lexer_by_name(_alias, **options):
"""
Get a lexer by an alias.
"""
# lookup builtin lexers
for module_name, name, aliases, _, _ in LEXERS.itervalues():
if _alias in aliases:
if name not in _lexer_cache:
_load_lexers(module_name)
return _lexer_cache[name](**options)
# continue with lexers from setuptools entrypoints
for cls in find_plugin_lexers():
if _alias in cls.aliases:
return cls(**options)
raise ClassNotFound('no lexer for alias %r found' % _alias)
def find_lexer_class(name):
"""
Lookup a lexer class by name. Return None if not found.
"""
if name in _lexer_cache:
return _lexer_cache[name]
# lookup builtin lexers
for module_name, lname, aliases, _, _ in LEXERS.itervalues():
if name == lname:
_load_lexers(module_name)
return _lexer_cache[name]
# continue with lexers from setuptools entrypoints
for cls in find_plugin_lexers():
if cls.name == name:
return cls
def get_lexer_for_filename(_fn, code=None, **options):
"""
Get a lexer for a filename. If multiple lexers match the filename
pattern, use ``analyze_text()`` to figure out which one is more
appropriate.
"""
matches = []
fn = basename(_fn)
for modname, name, _, filenames, _ in LEXERS.itervalues():
for filename in filenames:
if fnmatch.fnmatch(fn, filename):
if name not in _lexer_cache:
_load_lexers(modname)
matches.append(_lexer_cache[name])
for cls in find_plugin_lexers():
for filename in cls.filenames:
if fnmatch.fnmatch(fn, filename):
matches.append(cls)
if sys.version_info > (3,) and isinstance(code, bytes):
# decode it, since all analyse_text functions expect unicode
code = code.decode('latin1')
def get_rating(cls):
# The class _always_ defines analyse_text because it's included in
# the Lexer class. The default implementation returns None which
# gets turned into 0.0. Run scripts/detect_missing_analyse_text.py
# to find lexers which need it overridden.
d = cls.analyse_text(code)
#print "Got %r from %r" % (d, cls)
return d
if code:
matches.sort(key=get_rating)
if matches:
#print "Possible lexers, after sort:", matches
return matches[-1](**options)
raise ClassNotFound('no lexer for filename %r found' % _fn)
import fnmatch
import types
from os.path import basename
try:
set
except NameError:
from sets import Set as set
from _mapping import LEXERS
from pygments.plugin import find_plugin_lexers
from pygments.util import ClassNotFound, bytes
__all__ = ['get_lexer_by_name', 'get_lexer_for_filename', 'find_lexer_class',
'guess_lexer'] + LEXERS.keys()
_lexer_cache = {}
def _load_lexers(module_name):
"""
Load a lexer (and all others in the module too).
"""
mod = __import__(module_name, None, None, ['__all__'])
for lexer_name in mod.__all__:
cls = getattr(mod, lexer_name)
_lexer_cache[cls.name] = cls
def get_all_lexers():
from _mapping import LEXERS
from typing import List
template: str = r"""{-# LANGUAGE OverloadedStrings #-}
-- | Lexer mappings in Pygments filter
--
-- **Generated code, DO NOT modify**.
module Text.Pandoc.Fltr.Pygments.Lexers (
langMapping
) where
import qualified Data.Map as Map
import Data.Map (Map)
import Data.Text (Text)
-- | Mapping from aliases to language name
langMapping :: Map Text Text
langMapping = Map.fromList
"""
langMaps: List[str] = []
for _, lang, aliases, *_ in LEXERS.values():
for alias in aliases:
langMaps.append(f'("{alias}", "{lang}")')
template += " [ " + "\n , ".join(langMaps) + "\n ]"
print(template)
