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
11
12    noremap <leader>cr :pyf <path-to>/clang-rename.py<cr>
13
14IMPORTANT NOTE: Before running the tool, make sure you saved the file.
15
16All you have to do now is to place a cursor on a variable/function/class which
17you would like to rename and press '<leader>cr'. You will be prompted for a new
18name if the cursor points to a valid symbol.
19'''
20
21import vim
22import subprocess
23import sys
24
25def main():
26    binary = 'clang-rename'
27    if vim.eval('exists("g:clang_rename_path")') == "1":
28        binary = vim.eval('g:clang_rename_path')
29
30    # Get arguments for clang-rename binary.
31    offset = int(vim.eval('line2byte(line("."))+col(".")')) - 2
32    if offset < 0:
33        print >> sys.stderr, '''Couldn\'t determine cursor position.
34                                Is your file empty?'''
35        return
36    filename = vim.current.buffer.name
37
38    new_name_request_message = 'type new name:'
39    new_name = vim.eval("input('{}\n')".format(new_name_request_message))
40
41    # Call clang-rename.
42    command = [binary,
43               filename,
44               '-i',
45               '-offset', str(offset),
46               '-new-name', str(new_name)]
47    # FIXME: make it possible to run the tool on unsaved file.
48    p = subprocess.Popen(command,
49                         stdout=subprocess.PIPE,
50                         stderr=subprocess.PIPE)
51    stdout, stderr = p.communicate()
52
53    if stderr:
54        print stderr
55
56    # Reload all buffers in Vim.
57    vim.command("checktime")
58
59
60if __name__ == '__main__':
61    main()
62