def run():
if not sys.stdin.isatty():
pager = Pager.from_pipe()
pager.run()
else:
parser = argparse.ArgumentParser(description='Browse through a text file.')
parser.add_argument('filename', metavar='filename', nargs='+',
help='The file to be displayed.')
parser.add_argument('--vi', help='Prefer Vi key bindings.', action='store_true')
parser.add_argument('--emacs', help='Prefer Emacs key bindings.', action='store_true')
args = parser.parse_args()
# Determine input mode.
vi_mode = 'vi' in os.environ.get('EDITOR', '').lower()
if args.vi: vi_mode = True
if args.emacs: vi_mode = False
pager = Pager(vi_mode=vi_mode)
# Open files.
for filename in args.filename:
# When a filename is given, take a lexer from that filename.
lexer = PygmentsLexer.from_filename(filename, sync_from_start=False)
pager.add_source(FileSource(filename, lexer=lexer))
# Run UI.
pager.run()
def lex_document(self, cli, document):
"""
Call the lexer and return a get_tokens_for_line function.
"""
location = self.editor_buffer.location
if location:
return PygmentsLexer.from_filename(location, sync_from_start=False).lex_document(cli, document)
return SimpleLexer().lex_document(cli, document)
def open_file(self, filename):
"""
Open this file.
"""
lexer = PygmentsLexer.from_filename(filename, sync_from_start=False)
try:
source = FileSource(filename, lexer=lexer)
except IOError as e:
self.message = '{}'.format(e)
else:
self.add_source(source)
