Format your C family code
This plugin formats your code with specific coding style using clang-format.
Currently below languages are supported:
- C
- C++
- Objective-C
- JavaScript
- Java
- TypeScript
- Protobuf
Screenshot
Requirements
clang-format
command (3.4 or later), which is bundled in Clang extra tools- vim-operator-user(highly recommended)
- vimproc.vim(recommended in Windows)
Installation
Copy plugin
, doc
and autoload
directories into your ~/.vim
or use :packadd
in Vim8. Or please use your favorite plugin manager to install this plugin. I recommend latter.
Usage
:ClangFormat
command is available.
If you use it in normal mode, the whole code will be formatted. If you use it in visual mode, the selected code will be formatted.
It is more convenient to map :ClangFormat
to your favorite key mapping in normal mode and visual mode.
If you install vim-operator-user in advance, you can also map <Plug>(operator-clang-format)
to your favorite key bind.
:ClangFormatAutoToggle
command toggles the auto formatting on buffer write.
:ClangFormatAutoEnable
command enables the auto formatting on buffer write. Useful for automatically enabling the auto format through a vimrc. :ClangFormatAutoDisable
turns it off.
clang-format.py
?
What is the difference from clang-format.py
is Python script to use clang-format from Vim, which is installed with clang-format.
The usage is here.
Against clang-format.py
, vim-clang-format has below advantages.
- Style options are highly customizable in
.vimrc
.clang-format.py
requires.clang-format
file to customize a style. - vim-clang-format provides an operator mapping.
- vim-clang-format doesn't need python interface.
In short, vim-clang-format has better Vim integration than clang-format.py
.
Customization
You can customize formatting using some variables.
g:clang_format#code_style
g:clang_format#code_style
is a base style.
llvm
, google
, chromium
, mozilla
is supported.
The default value is google
.
g:clang_format#style_options
Coding style options as dictionary.
An example is below:
let g:clang_format#style_options = {
\ "AccessModifierOffset" : -4,
\ "AllowShortIfStatementsOnASingleLine" : "true",
\ "AlwaysBreakTemplateDeclarations" : "true",
\ "Standard" : "C++11",
\ "BreakBeforeBraces" : "Stroustrup"}
For config information, execute clang-format -dump-config
command.
g:clang_format#command
Name of clang-format
. If the name of command is not clang-format
or you want to specify a command by absolute path, set this variable.
Default value is clang-format
.
g:clang_format#extra_args
You can specify more extra options in g:clang_format#extra_args
as String or List of String.
g:clang_format#detect_style_file
When this variable's value is 1
, vim-clang-format automatically detects the style file like
.clang-format
or _clang-format
and applies the style to formatting.
g:clang_format#auto_format
When the value is 1, a current buffer is automatically formatted on saving the buffer.
Formatting is executed on BufWritePre
event.
g:clang_format#auto_format_on_insert_leave
When the value is 1, inserted lines are automatically formatted on leaving insert mode.
Formatting is executed on InsertLeave
event.
g:clang_format#auto_formatexpr
When the value is 1, formatexpr
option is set by vim-clang-format automatically in C, C++ and ObjC codes.
Vim's format mappings (e.g. gq
) get to use clang-format
to format. This
option is not comptabile with Vim's textwidth
feature. You must set
textwidth
to 0
when the formatexpr
is set.
g:clang_format#enable_fallback_style
When the value is 0, -fallback-style=none
option is added on executing clang-format command.
It means that vim-clang-format does nothing when .clang-format
is not found.
The default value is 1.
Vimrc Example
let g:clang_format#style_options = {
\ "AccessModifierOffset" : -4,
\ "AllowShortIfStatementsOnASingleLine" : "true",
\ "AlwaysBreakTemplateDeclarations" : "true",
\ "Standard" : "C++11"}
" map to <Leader>cf in C++ code
autocmd FileType c,cpp,objc nnoremap <buffer><Leader>cf :<C-u>ClangFormat<CR>
autocmd FileType c,cpp,objc vnoremap <buffer><Leader>cf :ClangFormat<CR>
" if you install vim-operator-user
autocmd FileType c,cpp,objc map <buffer><Leader>x <Plug>(operator-clang-format)
" Toggle auto formatting:
nmap <Leader>C :ClangFormatAutoToggle<CR>
Auto-enabling auto-formatting
autocmd FileType c ClangFormatAutoEnable
For More Information
$ clang-format -help
$ clang-format -dump-config
clang-format's documentation and API documentation is useful in some cases. In particular, the following link is useful to know the information of a key and its value of a style setting. CLANG-FORMAT STYLE OPTIONS
License
The MIT License (MIT)
Copyright (c) 2013 rhysd
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.