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292 lines
8.8 KiB
Python
292 lines
8.8 KiB
Python
8 years ago
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#!/usr/bin/env python
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# encoding: utf-8
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"""Wrapper functionality around the functions we need from Vim."""
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import re
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import vim # pylint:disable=import-error
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from vim import error # pylint:disable=import-error,unused-import
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from UltiSnips.compatibility import col2byte, byte2col, \
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as_unicode, as_vimencoding
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from UltiSnips.position import Position
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from contextlib import contextmanager
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class VimBuffer(object):
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"""Wrapper around the current Vim buffer."""
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def __getitem__(self, idx):
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if isinstance(idx, slice): # Py3
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return self.__getslice__(idx.start, idx.stop)
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rv = vim.current.buffer[idx]
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return as_unicode(rv)
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def __getslice__(self, i, j): # pylint:disable=no-self-use
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rv = vim.current.buffer[i:j]
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return [as_unicode(l) for l in rv]
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def __setitem__(self, idx, text):
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if isinstance(idx, slice): # Py3
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return self.__setslice__(idx.start, idx.stop, text)
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vim.current.buffer[idx] = as_vimencoding(text)
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def __setslice__(self, i, j, text): # pylint:disable=no-self-use
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vim.current.buffer[i:j] = [as_vimencoding(l) for l in text]
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def __len__(self):
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return len(vim.current.buffer)
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@property
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def line_till_cursor(self): # pylint:disable=no-self-use
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"""Returns the text before the cursor."""
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_, col = self.cursor
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return as_unicode(vim.current.line)[:col]
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@property
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def number(self): # pylint:disable=no-self-use
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"""The bufnr() of the current buffer."""
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return vim.current.buffer.number
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@property
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def cursor(self): # pylint:disable=no-self-use
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"""The current windows cursor.
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Note that this is 0 based in col and 0 based in line which is
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different from Vim's cursor.
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"""
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line, nbyte = vim.current.window.cursor
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col = byte2col(line, nbyte)
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return Position(line - 1, col)
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@cursor.setter
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def cursor(self, pos): # pylint:disable=no-self-use
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"""See getter."""
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nbyte = col2byte(pos.line + 1, pos.col)
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vim.current.window.cursor = pos.line + 1, nbyte
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buf = VimBuffer() # pylint:disable=invalid-name
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@contextmanager
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def toggle_opt(name, new_value):
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old_value = eval('&' + name)
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command('set {0}={1}'.format(name, new_value))
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try:
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yield
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finally:
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command('set {0}={1}'.format(name, old_value))
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@contextmanager
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def save_mark(name):
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old_pos = get_mark_pos(name)
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try:
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yield
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finally:
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if _is_pos_zero(old_pos):
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delete_mark(name)
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else:
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set_mark_from_pos(name, old_pos)
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def escape(inp):
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"""Creates a vim-friendly string from a group of
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dicts, lists and strings."""
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def conv(obj):
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"""Convert obj."""
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if isinstance(obj, list):
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rv = as_unicode('[' + ','.join(conv(o) for o in obj) + ']')
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elif isinstance(obj, dict):
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rv = as_unicode('{' + ','.join([
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'%s:%s' % (conv(key), conv(value))
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for key, value in obj.iteritems()]) + '}')
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else:
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rv = as_unicode('"%s"') % as_unicode(obj).replace('"', '\\"')
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return rv
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return conv(inp)
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def command(cmd):
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"""Wraps vim.command."""
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return as_unicode(vim.command(as_vimencoding(cmd)))
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def eval(text):
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"""Wraps vim.eval."""
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rv = vim.eval(as_vimencoding(text))
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if not isinstance(rv, (dict, list)):
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return as_unicode(rv)
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return rv
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def feedkeys(keys, mode='n'):
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"""Wrapper around vim's feedkeys function.
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Mainly for convenience.
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"""
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if eval('mode()') == 'n':
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if keys == 'a':
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cursor_pos = get_cursor_pos()
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cursor_pos[2] = int(cursor_pos[2]) + 1
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set_cursor_from_pos(cursor_pos)
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if keys in 'ai':
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keys = 'startinsert'
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if keys == 'startinsert':
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command('startinsert')
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else:
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command(as_unicode(r'call feedkeys("%s", "%s")') % (keys, mode))
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def new_scratch_buffer(text):
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"""Create a new scratch buffer with the text given."""
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vim.command('botright new')
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vim.command('set ft=')
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vim.command('set buftype=nofile')
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vim.current.buffer[:] = text.splitlines()
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feedkeys(r"\<Esc>")
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def virtual_position(line, col):
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"""Runs the position through virtcol() and returns the result."""
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nbytes = col2byte(line, col)
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return line, int(eval('virtcol([%d, %d])' % (line, nbytes)))
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def select(start, end):
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"""Select the span in Select mode."""
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_unmap_select_mode_mapping()
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selection = eval('&selection')
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col = col2byte(start.line + 1, start.col)
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vim.current.window.cursor = start.line + 1, col
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mode = eval('mode()')
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move_cmd = ''
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if mode != 'n':
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move_cmd += r"\<Esc>"
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if start == end:
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# Zero Length Tabstops, use 'i' or 'a'.
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if col == 0 or mode not in 'i' and \
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col < len(buf[start.line]):
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move_cmd += 'i'
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else:
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move_cmd += 'a'
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else:
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# Non zero length, use Visual selection.
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move_cmd += 'v'
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if 'inclusive' in selection:
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if end.col == 0:
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move_cmd += '%iG$' % end.line
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else:
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move_cmd += '%iG%i|' % virtual_position(end.line + 1, end.col)
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elif 'old' in selection:
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move_cmd += '%iG%i|' % virtual_position(end.line + 1, end.col)
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else:
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move_cmd += '%iG%i|' % virtual_position(end.line + 1, end.col + 1)
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move_cmd += 'o%iG%i|o\\<c-g>' % virtual_position(
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start.line + 1, start.col + 1)
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feedkeys(move_cmd)
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def set_mark_from_pos(name, pos):
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return _set_pos("'" + name, pos)
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def get_mark_pos(name):
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return _get_pos("'" + name)
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def set_cursor_from_pos(pos):
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return _set_pos('.', pos)
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def get_cursor_pos():
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return _get_pos('.')
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def delete_mark(name):
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try:
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return command('delma ' + name)
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except:
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return False
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def _set_pos(name, pos):
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return eval("setpos(\"{0}\", {1})".format(name, pos))
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def _get_pos(name):
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return eval("getpos(\"{0}\")".format(name))
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def _is_pos_zero(pos):
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return ['0'] * 4 == pos or [0] == pos
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def _unmap_select_mode_mapping():
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"""This function unmaps select mode mappings if so wished by the user.
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Removes select mode mappings that can actually be typed by the user
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(ie, ignores things like <Plug>).
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"""
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if int(eval('g:UltiSnipsRemoveSelectModeMappings')):
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ignores = eval('g:UltiSnipsMappingsToIgnore') + ['UltiSnips']
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for option in ('<buffer>', ''):
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# Put all smaps into a var, and then read the var
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command(r"redir => _tmp_smaps | silent smap %s " % option +
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'| redir END')
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# Check if any mappings where found
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all_maps = list(filter(len, eval(r"_tmp_smaps").splitlines()))
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if len(all_maps) == 1 and all_maps[0][0] not in ' sv':
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# "No maps found". String could be localized. Hopefully
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# it doesn't start with any of these letters in any
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# language
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continue
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# Only keep mappings that should not be ignored
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maps = [m for m in all_maps if
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not any(i in m for i in ignores) and len(m.strip())]
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for map in maps:
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# The first three chars are the modes, that might be listed.
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# We are not interested in them here.
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trig = map[3:].split()[0] if len(
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map[3:].split()) != 0 else None
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if trig is None:
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continue
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# The bar separates commands
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if trig[-1] == '|':
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trig = trig[:-1] + '<Bar>'
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# Special ones
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if trig[0] == '<':
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add = False
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# Only allow these
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for valid in ['Tab', 'NL', 'CR', 'C-Tab', 'BS']:
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if trig == '<%s>' % valid:
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add = True
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if not add:
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continue
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# UltiSnips remaps <BS>. Keep this around.
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if trig == '<BS>':
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continue
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# Actually unmap it
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try:
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command('silent! sunmap %s %s' % (option, trig))
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except: # pylint:disable=bare-except
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# Bug 908139: ignore unmaps that fail because of
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# unprintable characters. This is not ideal because we
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# will not be able to unmap lhs with any unprintable
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# character. If the lhs stats with a printable
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# character this will leak to the user when he tries to
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# type this character as a first in a selected tabstop.
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# This case should be rare enough to not bother us
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# though.
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pass
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