62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
from __future__ import unicode_literals
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from six import string_types
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from prompt_toolkit.completion import Completer, Completion
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__all__ = (
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'WordCompleter',
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)
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class WordCompleter(Completer):
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"""
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Simple autocompletion on a list of words.
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:param words: List of words.
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:param ignore_case: If True, case-insensitive completion.
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:param meta_dict: Optional dict mapping words to their meta-information.
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:param WORD: When True, use WORD characters.
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:param sentence: When True, don't complete by comparing the word before the
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cursor, but by comparing all the text before the cursor. In this case,
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the list of words is just a list of strings, where each string can
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contain spaces. (Can not be used together with the WORD option.)
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:param match_middle: When True, match not only the start, but also in the
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middle of the word.
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"""
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def __init__(self, words, ignore_case=False, meta_dict=None, WORD=False,
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sentence=False, match_middle=False):
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assert not (WORD and sentence)
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self.words = list(words)
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self.ignore_case = ignore_case
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self.meta_dict = meta_dict or {}
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self.WORD = WORD
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self.sentence = sentence
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self.match_middle = match_middle
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assert all(isinstance(w, string_types) for w in self.words)
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def get_completions(self, document, complete_event):
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# Get word/text before cursor.
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if self.sentence:
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word_before_cursor = document.text_before_cursor
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else:
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word_before_cursor = document.get_word_before_cursor(WORD=self.WORD)
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if self.ignore_case:
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word_before_cursor = word_before_cursor.lower()
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def word_matches(word):
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""" True when the word before the cursor matches. """
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if self.ignore_case:
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word = word.lower()
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if self.match_middle:
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return word_before_cursor in word
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else:
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return word.startswith(word_before_cursor)
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for a in self.words:
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if word_matches(a):
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display_meta = self.meta_dict.get(a, '')
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yield Completion(a, -len(word_before_cursor), display_meta=display_meta)
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