102 lines
3.4 KiB
Python
102 lines
3.4 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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"""This file contains compatibility code to stay compatible with as many python
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versions as possible."""
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import sys
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import vim # pylint:disable=import-error
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if sys.version_info >= (3, 0):
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def _vim_dec(string):
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"""Decode 'string' using &encoding."""
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# We don't have the luxury here of failing, everything
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# falls apart if we don't return a bytearray from the
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# passed in string
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return string.decode(vim.eval('&encoding'), 'replace')
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def _vim_enc(bytearray):
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"""Encode 'string' using &encoding."""
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# We don't have the luxury here of failing, everything
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# falls apart if we don't return a string from the passed
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# in bytearray
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return bytearray.encode(vim.eval('&encoding'), 'replace')
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def open_ascii_file(filename, mode):
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"""Opens a file in "r" mode."""
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return open(filename, mode, encoding='utf-8')
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def col2byte(line, col):
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"""Convert a valid column index into a byte index inside of vims
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buffer."""
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# We pad the line so that selecting the +1 st column still works.
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pre_chars = (vim.current.buffer[line - 1] + ' ')[:col]
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return len(_vim_enc(pre_chars))
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def byte2col(line, nbyte):
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"""Convert a column into a byteidx suitable for a mark or cursor
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position inside of vim."""
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line = vim.current.buffer[line - 1]
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raw_bytes = _vim_enc(line)[:nbyte]
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return len(_vim_dec(raw_bytes))
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def as_unicode(string):
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"""Return 'string' as unicode instance."""
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if isinstance(string, bytes):
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return _vim_dec(string)
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return str(string)
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def as_vimencoding(string):
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"""Return 'string' as Vim internal encoding."""
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return string
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else:
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import warnings
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warnings.filterwarnings('ignore', category=DeprecationWarning)
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def _vim_dec(string):
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"""Decode 'string' using &encoding."""
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try:
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return string.decode(vim.eval('&encoding'))
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except UnicodeDecodeError:
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# At least we tried. There might be some problems down the road now
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return string
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def _vim_enc(string):
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"""Encode 'string' using &encoding."""
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try:
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return string.encode(vim.eval('&encoding'))
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except UnicodeDecodeError:
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return string
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except UnicodeEncodeError:
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return string
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def open_ascii_file(filename, mode):
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"""Opens a file in "r" mode."""
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return open(filename, mode)
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def col2byte(line, col):
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"""Convert a valid column index into a byte index inside of vims
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buffer."""
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# We pad the line so that selecting the +1 st column still works.
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pre_chars = _vim_dec(vim.current.buffer[line - 1] + ' ')[:col]
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return len(_vim_enc(pre_chars))
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def byte2col(line, nbyte):
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"""Convert a column into a byteidx suitable for a mark or cursor
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position inside of vim."""
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line = vim.current.buffer[line - 1]
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if nbyte >= len(line): # This is beyond end of line
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return nbyte
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return len(_vim_dec(line[:nbyte]))
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def as_unicode(string):
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"""Return 'string' as unicode instance."""
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if isinstance(string, str):
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return _vim_dec(string)
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return unicode(string)
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def as_vimencoding(string):
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"""Return 'string' as unicode instance."""
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return _vim_enc(string)
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