1'''
2Minimal clang-rename integration with Vim.
3
4Before installing make sure one of the following is satisfied:
5
6* clang-rename is in your PATH
7* `g:clang_rename_path` in ~/.vimrc points to valid clang-rename executable
8* `binary` in clang-rename.py points to valid to clang-rename executable
9
10To install, simply put this into your ~/.vimrc for python2 support
11
12    noremap <leader>cr :pyf <path-to>/clang-rename.py<cr>
13
14For python3 use the following command (note the change from :pyf to :py3f)
15
16    noremap <leader>cr :py3f <path-to>/clang-rename.py<cr>
17
18IMPORTANT NOTE: Before running the tool, make sure you saved the file.
19
20All you have to do now is to place a cursor on a variable/function/class which
21you would like to rename and press '<leader>cr'. You will be prompted for a new
22name if the cursor points to a valid symbol.
23'''
24
25from __future__ import absolute_import, division, print_function
26import vim
27import subprocess
28import sys
29
30def main():
31    binary = 'clang-rename'
32    if vim.eval('exists("g:clang_rename_path")') == "1":
33        binary = vim.eval('g:clang_rename_path')
34
35    # Get arguments for clang-rename binary.
36    offset = int(vim.eval('line2byte(line("."))+col(".")')) - 2
37    if offset < 0:
38        print('Couldn\'t determine cursor position. Is your file empty?',
39              file=sys.stderr)
40        return
41    filename = vim.current.buffer.name
42
43    new_name_request_message = 'type new name:'
44    new_name = vim.eval("input('{}\n')".format(new_name_request_message))
45
46    # Call clang-rename.
47    command = [binary,
48               filename,
49               '-i',
50               '-offset', str(offset),
51               '-new-name', str(new_name)]
52    # FIXME: make it possible to run the tool on unsaved file.
53    p = subprocess.Popen(command,
54                         stdout=subprocess.PIPE,
55                         stderr=subprocess.PIPE)
56    stdout, stderr = p.communicate()
57
58    if stderr:
59        print(stderr)
60
61    # Reload all buffers in Vim.
62    vim.command("checktime")
63
64
65if __name__ == '__main__':
66    main()
67