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663 lines
23 KiB
663 lines
23 KiB
"""
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pygments.cmdline
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~~~~~~~~~~~~~~~~
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Command line interface.
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:copyright: Copyright 2006-2021 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 os
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import sys
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import shutil
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import argparse
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from textwrap import dedent
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from pip._vendor.pygments import __version__, highlight
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from pip._vendor.pygments.util import ClassNotFound, OptionError, docstring_headline, \
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guess_decode, guess_decode_from_terminal, terminal_encoding, \
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UnclosingTextIOWrapper
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from pip._vendor.pygments.lexers import get_all_lexers, get_lexer_by_name, guess_lexer, \
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load_lexer_from_file, get_lexer_for_filename, find_lexer_class_for_filename
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from pip._vendor.pygments.lexers.special import TextLexer
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from pip._vendor.pygments.formatters.latex import LatexEmbeddedLexer, LatexFormatter
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from pip._vendor.pygments.formatters import get_all_formatters, get_formatter_by_name, \
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load_formatter_from_file, get_formatter_for_filename, find_formatter_class
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from pip._vendor.pygments.formatters.terminal import TerminalFormatter
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from pip._vendor.pygments.formatters.terminal256 import Terminal256Formatter
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from pip._vendor.pygments.filters import get_all_filters, find_filter_class
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from pip._vendor.pygments.styles import get_all_styles, get_style_by_name
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def _parse_options(o_strs):
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opts = {}
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if not o_strs:
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return opts
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for o_str in o_strs:
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if not o_str.strip():
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continue
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o_args = o_str.split(',')
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for o_arg in o_args:
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o_arg = o_arg.strip()
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try:
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o_key, o_val = o_arg.split('=', 1)
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o_key = o_key.strip()
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o_val = o_val.strip()
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except ValueError:
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opts[o_arg] = True
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else:
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opts[o_key] = o_val
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return opts
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def _parse_filters(f_strs):
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filters = []
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if not f_strs:
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return filters
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for f_str in f_strs:
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if ':' in f_str:
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fname, fopts = f_str.split(':', 1)
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filters.append((fname, _parse_options([fopts])))
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else:
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filters.append((f_str, {}))
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return filters
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def _print_help(what, name):
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try:
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if what == 'lexer':
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cls = get_lexer_by_name(name)
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print("Help on the %s lexer:" % cls.name)
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print(dedent(cls.__doc__))
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elif what == 'formatter':
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cls = find_formatter_class(name)
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print("Help on the %s formatter:" % cls.name)
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print(dedent(cls.__doc__))
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elif what == 'filter':
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cls = find_filter_class(name)
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print("Help on the %s filter:" % name)
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print(dedent(cls.__doc__))
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return 0
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except (AttributeError, ValueError):
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print("%s not found!" % what, file=sys.stderr)
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return 1
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def _print_list(what):
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if what == 'lexer':
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print()
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print("Lexers:")
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print("~~~~~~~")
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info = []
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for fullname, names, exts, _ in get_all_lexers():
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tup = (', '.join(names)+':', fullname,
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exts and '(filenames ' + ', '.join(exts) + ')' or '')
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info.append(tup)
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info.sort()
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for i in info:
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print(('* %s\n %s %s') % i)
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elif what == 'formatter':
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print()
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print("Formatters:")
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print("~~~~~~~~~~~")
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info = []
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for cls in get_all_formatters():
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doc = docstring_headline(cls)
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tup = (', '.join(cls.aliases) + ':', doc, cls.filenames and
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'(filenames ' + ', '.join(cls.filenames) + ')' or '')
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info.append(tup)
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info.sort()
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for i in info:
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print(('* %s\n %s %s') % i)
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elif what == 'filter':
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print()
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print("Filters:")
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print("~~~~~~~~")
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for name in get_all_filters():
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cls = find_filter_class(name)
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print("* " + name + ':')
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print(" %s" % docstring_headline(cls))
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elif what == 'style':
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print()
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print("Styles:")
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print("~~~~~~~")
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for name in get_all_styles():
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cls = get_style_by_name(name)
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print("* " + name + ':')
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print(" %s" % docstring_headline(cls))
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def _print_list_as_json(requested_items):
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import json
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result = {}
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if 'lexer' in requested_items:
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info = {}
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for fullname, names, filenames, mimetypes in get_all_lexers():
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info[fullname] = {
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'aliases': names,
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'filenames': filenames,
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'mimetypes': mimetypes
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}
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result['lexers'] = info
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if 'formatter' in requested_items:
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info = {}
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for cls in get_all_formatters():
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doc = docstring_headline(cls)
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info[cls.name] = {
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'aliases': cls.aliases,
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'filenames': cls.filenames,
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'doc': doc
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}
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result['formatters'] = info
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if 'filter' in requested_items:
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info = {}
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for name in get_all_filters():
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cls = find_filter_class(name)
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info[name] = {
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'doc': docstring_headline(cls)
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}
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result['filters'] = info
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if 'style' in requested_items:
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info = {}
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for name in get_all_styles():
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cls = get_style_by_name(name)
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info[name] = {
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'doc': docstring_headline(cls)
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}
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result['styles'] = info
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json.dump(result, sys.stdout)
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def main_inner(parser, argns):
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if argns.help:
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parser.print_help()
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return 0
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if argns.V:
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print('Pygments version %s, (c) 2006-2021 by Georg Brandl, Matthäus '
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'Chajdas and contributors.' % __version__)
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return 0
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def is_only_option(opt):
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return not any(v for (k, v) in vars(argns).items() if k != opt)
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# handle ``pygmentize -L``
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if argns.L is not None:
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arg_set = set()
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for k, v in vars(argns).items():
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if v:
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arg_set.add(k)
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arg_set.discard('L')
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arg_set.discard('json')
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if arg_set:
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parser.print_help(sys.stderr)
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return 2
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# print version
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if not argns.json:
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main(['', '-V'])
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allowed_types = {'lexer', 'formatter', 'filter', 'style'}
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largs = [arg.rstrip('s') for arg in argns.L]
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if any(arg not in allowed_types for arg in largs):
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parser.print_help(sys.stderr)
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return 0
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if not largs:
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largs = allowed_types
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if not argns.json:
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for arg in largs:
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_print_list(arg)
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else:
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_print_list_as_json(largs)
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return 0
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# handle ``pygmentize -H``
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if argns.H:
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if not is_only_option('H'):
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parser.print_help(sys.stderr)
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return 2
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what, name = argns.H
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if what not in ('lexer', 'formatter', 'filter'):
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parser.print_help(sys.stderr)
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return 2
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return _print_help(what, name)
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# parse -O options
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parsed_opts = _parse_options(argns.O or [])
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# parse -P options
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for p_opt in argns.P or []:
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try:
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name, value = p_opt.split('=', 1)
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except ValueError:
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parsed_opts[p_opt] = True
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else:
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parsed_opts[name] = value
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# encodings
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inencoding = parsed_opts.get('inencoding', parsed_opts.get('encoding'))
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outencoding = parsed_opts.get('outencoding', parsed_opts.get('encoding'))
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# handle ``pygmentize -N``
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if argns.N:
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lexer = find_lexer_class_for_filename(argns.N)
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if lexer is None:
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lexer = TextLexer
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print(lexer.aliases[0])
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return 0
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# handle ``pygmentize -C``
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if argns.C:
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inp = sys.stdin.buffer.read()
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try:
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lexer = guess_lexer(inp, inencoding=inencoding)
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except ClassNotFound:
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lexer = TextLexer
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print(lexer.aliases[0])
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return 0
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# handle ``pygmentize -S``
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S_opt = argns.S
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a_opt = argns.a
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if S_opt is not None:
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f_opt = argns.f
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if not f_opt:
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parser.print_help(sys.stderr)
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return 2
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if argns.l or argns.INPUTFILE:
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parser.print_help(sys.stderr)
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return 2
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try:
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parsed_opts['style'] = S_opt
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fmter = get_formatter_by_name(f_opt, **parsed_opts)
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except ClassNotFound as err:
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print(err, file=sys.stderr)
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return 1
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print(fmter.get_style_defs(a_opt or ''))
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return 0
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# if no -S is given, -a is not allowed
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if argns.a is not None:
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parser.print_help(sys.stderr)
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return 2
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# parse -F options
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F_opts = _parse_filters(argns.F or [])
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# -x: allow custom (eXternal) lexers and formatters
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allow_custom_lexer_formatter = bool(argns.x)
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# select lexer
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lexer = None
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# given by name?
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lexername = argns.l
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if lexername:
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# custom lexer, located relative to user's cwd
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if allow_custom_lexer_formatter and '.py' in lexername:
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try:
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filename = None
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name = None
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if ':' in lexername:
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filename, name = lexername.rsplit(':', 1)
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if '.py' in name:
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# This can happen on Windows: If the lexername is
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# C:\lexer.py -- return to normal load path in that case
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name = None
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if filename and name:
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lexer = load_lexer_from_file(filename, name,
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**parsed_opts)
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else:
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lexer = load_lexer_from_file(lexername, **parsed_opts)
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except ClassNotFound as err:
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print('Error:', err, file=sys.stderr)
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return 1
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else:
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try:
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lexer = get_lexer_by_name(lexername, **parsed_opts)
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except (OptionError, ClassNotFound) as err:
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print('Error:', err, file=sys.stderr)
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return 1
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# read input code
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code = None
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if argns.INPUTFILE:
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if argns.s:
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print('Error: -s option not usable when input file specified',
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file=sys.stderr)
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return 2
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infn = argns.INPUTFILE
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try:
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with open(infn, 'rb') as infp:
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code = infp.read()
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except Exception as err:
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print('Error: cannot read infile:', err, file=sys.stderr)
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return 1
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if not inencoding:
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code, inencoding = guess_decode(code)
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# do we have to guess the lexer?
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if not lexer:
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try:
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lexer = get_lexer_for_filename(infn, code, **parsed_opts)
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except ClassNotFound as err:
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if argns.g:
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try:
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lexer = guess_lexer(code, **parsed_opts)
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except ClassNotFound:
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lexer = TextLexer(**parsed_opts)
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else:
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print('Error:', err, file=sys.stderr)
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return 1
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except OptionError as err:
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print('Error:', err, file=sys.stderr)
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return 1
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elif not argns.s: # treat stdin as full file (-s support is later)
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# read code from terminal, always in binary mode since we want to
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# decode ourselves and be tolerant with it
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code = sys.stdin.buffer.read() # use .buffer to get a binary stream
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if not inencoding:
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code, inencoding = guess_decode_from_terminal(code, sys.stdin)
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# else the lexer will do the decoding
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if not lexer:
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try:
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lexer = guess_lexer(code, **parsed_opts)
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except ClassNotFound:
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lexer = TextLexer(**parsed_opts)
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else: # -s option needs a lexer with -l
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if not lexer:
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print('Error: when using -s a lexer has to be selected with -l',
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file=sys.stderr)
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return 2
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# process filters
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for fname, fopts in F_opts:
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try:
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lexer.add_filter(fname, **fopts)
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except ClassNotFound as err:
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print('Error:', err, file=sys.stderr)
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return 1
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# select formatter
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outfn = argns.o
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fmter = argns.f
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if fmter:
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# custom formatter, located relative to user's cwd
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if allow_custom_lexer_formatter and '.py' in fmter:
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try:
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filename = None
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name = None
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if ':' in fmter:
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# Same logic as above for custom lexer
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filename, name = fmter.rsplit(':', 1)
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if '.py' in name:
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name = None
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if filename and name:
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fmter = load_formatter_from_file(filename, name,
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**parsed_opts)
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else:
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fmter = load_formatter_from_file(fmter, **parsed_opts)
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except ClassNotFound as err:
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print('Error:', err, file=sys.stderr)
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return 1
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else:
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try:
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fmter = get_formatter_by_name(fmter, **parsed_opts)
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except (OptionError, ClassNotFound) as err:
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print('Error:', err, file=sys.stderr)
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return 1
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if outfn:
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if not fmter:
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try:
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fmter = get_formatter_for_filename(outfn, **parsed_opts)
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except (OptionError, ClassNotFound) as err:
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print('Error:', err, file=sys.stderr)
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return 1
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try:
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outfile = open(outfn, 'wb')
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except Exception as err:
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print('Error: cannot open outfile:', err, file=sys.stderr)
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return 1
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else:
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if not fmter:
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if '256' in os.environ.get('TERM', ''):
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fmter = Terminal256Formatter(**parsed_opts)
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else:
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fmter = TerminalFormatter(**parsed_opts)
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outfile = sys.stdout.buffer
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# determine output encoding if not explicitly selected
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if not outencoding:
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if outfn:
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# output file? use lexer encoding for now (can still be None)
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fmter.encoding = inencoding
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else:
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# else use terminal encoding
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fmter.encoding = terminal_encoding(sys.stdout)
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# provide coloring under Windows, if possible
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if not outfn and sys.platform in ('win32', 'cygwin') and \
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fmter.name in ('Terminal', 'Terminal256'): # pragma: no cover
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# unfortunately colorama doesn't support binary streams on Py3
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outfile = UnclosingTextIOWrapper(outfile, encoding=fmter.encoding)
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fmter.encoding = None
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try:
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import pip._vendor.colorama.initialise as colorama_initialise
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except ImportError:
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pass
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else:
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outfile = colorama_initialise.wrap_stream(
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outfile, convert=None, strip=None, autoreset=False, wrap=True)
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# When using the LaTeX formatter and the option `escapeinside` is
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# specified, we need a special lexer which collects escaped text
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# before running the chosen language lexer.
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escapeinside = parsed_opts.get('escapeinside', '')
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if len(escapeinside) == 2 and isinstance(fmter, LatexFormatter):
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left = escapeinside[0]
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right = escapeinside[1]
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lexer = LatexEmbeddedLexer(left, right, lexer)
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# ... and do it!
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if not argns.s:
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# process whole input as per normal...
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try:
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highlight(code, lexer, fmter, outfile)
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finally:
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if outfn:
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outfile.close()
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return 0
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else:
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|
# line by line processing of stdin (eg: for 'tail -f')...
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try:
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while 1:
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line = sys.stdin.buffer.readline()
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if not line:
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break
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if not inencoding:
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line = guess_decode_from_terminal(line, sys.stdin)[0]
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highlight(line, lexer, fmter, outfile)
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if hasattr(outfile, 'flush'):
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outfile.flush()
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return 0
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except KeyboardInterrupt: # pragma: no cover
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return 0
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finally:
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if outfn:
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outfile.close()
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class HelpFormatter(argparse.HelpFormatter):
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def __init__(self, prog, indent_increment=2, max_help_position=16, width=None):
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if width is None:
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try:
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width = shutil.get_terminal_size().columns - 2
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|
except Exception:
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pass
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argparse.HelpFormatter.__init__(self, prog, indent_increment,
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max_help_position, width)
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|
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def main(args=sys.argv):
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"""
|
|
Main command line entry point.
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|
"""
|
|
desc = "Highlight an input file and write the result to an output file."
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|
parser = argparse.ArgumentParser(description=desc, add_help=False,
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formatter_class=HelpFormatter)
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|
|
operation = parser.add_argument_group('Main operation')
|
|
lexersel = operation.add_mutually_exclusive_group()
|
|
lexersel.add_argument(
|
|
'-l', metavar='LEXER',
|
|
help='Specify the lexer to use. (Query names with -L.) If not '
|
|
'given and -g is not present, the lexer is guessed from the filename.')
|
|
lexersel.add_argument(
|
|
'-g', action='store_true',
|
|
help='Guess the lexer from the file contents, or pass through '
|
|
'as plain text if nothing can be guessed.')
|
|
operation.add_argument(
|
|
'-F', metavar='FILTER[:options]', action='append',
|
|
help='Add a filter to the token stream. (Query names with -L.) '
|
|
'Filter options are given after a colon if necessary.')
|
|
operation.add_argument(
|
|
'-f', metavar='FORMATTER',
|
|
help='Specify the formatter to use. (Query names with -L.) '
|
|
'If not given, the formatter is guessed from the output filename, '
|
|
'and defaults to the terminal formatter if the output is to the '
|
|
'terminal or an unknown file extension.')
|
|
operation.add_argument(
|
|
'-O', metavar='OPTION=value[,OPTION=value,...]', action='append',
|
|
help='Give options to the lexer and formatter as a comma-separated '
|
|
'list of key-value pairs. '
|
|
'Example: `-O bg=light,python=cool`.')
|
|
operation.add_argument(
|
|
'-P', metavar='OPTION=value', action='append',
|
|
help='Give a single option to the lexer and formatter - with this '
|
|
'you can pass options whose value contains commas and equal signs. '
|
|
'Example: `-P "heading=Pygments, the Python highlighter"`.')
|
|
operation.add_argument(
|
|
'-o', metavar='OUTPUTFILE',
|
|
help='Where to write the output. Defaults to standard output.')
|
|
|
|
operation.add_argument(
|
|
'INPUTFILE', nargs='?',
|
|
help='Where to read the input. Defaults to standard input.')
|
|
|
|
flags = parser.add_argument_group('Operation flags')
|
|
flags.add_argument(
|
|
'-v', action='store_true',
|
|
help='Print a detailed traceback on unhandled exceptions, which '
|
|
'is useful for debugging and bug reports.')
|
|
flags.add_argument(
|
|
'-s', action='store_true',
|
|
help='Process lines one at a time until EOF, rather than waiting to '
|
|
'process the entire file. This only works for stdin, only for lexers '
|
|
'with no line-spanning constructs, and is intended for streaming '
|
|
'input such as you get from `tail -f`. '
|
|
'Example usage: `tail -f sql.log | pygmentize -s -l sql`.')
|
|
flags.add_argument(
|
|
'-x', action='store_true',
|
|
help='Allow custom lexers and formatters to be loaded from a .py file '
|
|
'relative to the current working directory. For example, '
|
|
'`-l ./customlexer.py -x`. By default, this option expects a file '
|
|
'with a class named CustomLexer or CustomFormatter; you can also '
|
|
'specify your own class name with a colon (`-l ./lexer.py:MyLexer`). '
|
|
'Users should be very careful not to use this option with untrusted '
|
|
'files, because it will import and run them.')
|
|
flags.add_argument('--json', help='Output as JSON. This can '
|
|
'be only used in conjunction with -L.',
|
|
default=False,
|
|
action='store_true')
|
|
|
|
special_modes_group = parser.add_argument_group(
|
|
'Special modes - do not do any highlighting')
|
|
special_modes = special_modes_group.add_mutually_exclusive_group()
|
|
special_modes.add_argument(
|
|
'-S', metavar='STYLE -f formatter',
|
|
help='Print style definitions for STYLE for a formatter '
|
|
'given with -f. The argument given by -a is formatter '
|
|
'dependent.')
|
|
special_modes.add_argument(
|
|
'-L', nargs='*', metavar='WHAT',
|
|
help='List lexers, formatters, styles or filters -- '
|
|
'give additional arguments for the thing(s) you want to list '
|
|
'(e.g. "styles"), or omit them to list everything.')
|
|
special_modes.add_argument(
|
|
'-N', metavar='FILENAME',
|
|
help='Guess and print out a lexer name based solely on the given '
|
|
'filename. Does not take input or highlight anything. If no specific '
|
|
'lexer can be determined, "text" is printed.')
|
|
special_modes.add_argument(
|
|
'-C', action='store_true',
|
|
help='Like -N, but print out a lexer name based solely on '
|
|
'a given content from standard input.')
|
|
special_modes.add_argument(
|
|
'-H', action='store', nargs=2, metavar=('NAME', 'TYPE'),
|
|
help='Print detailed help for the object <name> of type <type>, '
|
|
'where <type> is one of "lexer", "formatter" or "filter".')
|
|
special_modes.add_argument(
|
|
'-V', action='store_true',
|
|
help='Print the package version.')
|
|
special_modes.add_argument(
|
|
'-h', '--help', action='store_true',
|
|
help='Print this help.')
|
|
special_modes_group.add_argument(
|
|
'-a', metavar='ARG',
|
|
help='Formatter-specific additional argument for the -S (print '
|
|
'style sheet) mode.')
|
|
|
|
argns = parser.parse_args(args[1:])
|
|
|
|
try:
|
|
return main_inner(parser, argns)
|
|
except Exception:
|
|
if argns.v:
|
|
print(file=sys.stderr)
|
|
print('*' * 65, file=sys.stderr)
|
|
print('An unhandled exception occurred while highlighting.',
|
|
file=sys.stderr)
|
|
print('Please report the whole traceback to the issue tracker at',
|
|
file=sys.stderr)
|
|
print('<https://github.com/pygments/pygments/issues>.',
|
|
file=sys.stderr)
|
|
print('*' * 65, file=sys.stderr)
|
|
print(file=sys.stderr)
|
|
raise
|
|
import traceback
|
|
info = traceback.format_exception(*sys.exc_info())
|
|
msg = info[-1].strip()
|
|
if len(info) >= 3:
|
|
# extract relevant file and position info
|
|
msg += '\n (f%s)' % info[-2].split('\n')[0].strip()[1:]
|
|
print(file=sys.stderr)
|
|
print('*** Error while highlighting:', file=sys.stderr)
|
|
print(msg, file=sys.stderr)
|
|
print('*** If this is a bug you want to report, please rerun with -v.',
|
|
file=sys.stderr)
|
|
return 1
|
|
|