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from prompt_toolkit.buffer import Buffer
from prompt_toolkit.filters import Condition
from .packages.parseutils.utils import is_open_quote
class PGBuffer(Buffer):
def __init__(self, always_multiline, multiline_mode, *args, **kwargs):
self.always_multiline = always_multiline
self.multiline_mode = multiline_mode
@Condition
def is_multiline():
doc = self.document
if not self.always_multiline:
return False
if self.multiline_mode == 'safe':
return True
else:
return not _multiline_exception(doc.text)
super(self.__class__, self).__init__(*args, is_multiline=is_multiline,
tempfile_suffix='.sql', **kwargs)
def _is_complete(sql):
# A complete command is an sql statement that ends with a semicolon, unless
# there's an open quote surrounding it, as is common when writing a
# CREATE FUNCTION command
return sql.endswith(';') and not is_open_quote(sql)
def _multiline_exception(text):
text = text.strip()
return (
text.startswith('\\') or # Special Command
text.endswith(r'\e') or # Ended with \e which should launch the editor
_is_complete(text) or # A complete SQL command
(text == 'exit') or # Exit doesn't need semi-colon
(text == 'quit') or # Quit doesn't need semi-colon
(text == ':q') or # To all the vim fans out there
(text == '') # Just a plain enter without any text
)
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