├── README.md
├── autoload
    └── lua_format.vim
└── plugin
    └── lua_format.vim


/README.md:
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 1 | # vim-lua-format
 2 | 
 3 | Lua vim formatter supported by [LuaFormatter](https://github.com/Koihik/LuaFormatter).
 4 | 
 5 | ## Install
 6 | 
 7 | Use [Vundle](https://github.com/VundleVim/Vundle.vim) to get the *vim-lua-format* plugin. After installing it you need to add the following
 8 | lines in your `.vimrc` file:
 9 | 
10 | ```vim
11 |   autocmd FileType lua nnoremap <buffer> <c-k> :call LuaFormat()<cr>
12 |   autocmd BufWrite *.lua call LuaFormat()
13 | ```
14 | 
15 | And it's done! 
16 | 
17 | Then press `<C-K>` or simply save some `*.lua` file to format the Lua code automatically.
18 | 
19 | __NOTE__ if you need to use the `LuaFormat()` function directly from command mode, you should call it explicitly as `:call LuaFormat()`
20 | 
21 | ## Features
22 | 
23 | Reformats your Lua source code.
24 | 
25 | ## Extension Settings
26 | 
27 | * `.lua-format`: Specifies the style config file. [Style Options](https://github.com/Koihik/LuaFormatter/wiki/Style-Config)
28 | 
29 | The `.lua-format` file must be in the source or parent directory. If there is no configuration file the default settings are used.
30 | 
31 | ## Known Issues
32 | 
33 | You may have an error that claims unknown `-i` or `-si` options. This is happening because some versions of `lua-formatter` uses different flags.
34 | 
35 | So if you get any error about unknown flag, just change it to the correct flag in [flags](https://github.com/jefersonf/vim-lua-format/blob/e94e10b969bf42b76e2558d079a2765dca5baa79/autoload/lua_format.vim#L40) string variable at `lua_format#format()` function.
36 | 


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/autoload/lua_format.vim:
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 1 | " help function for formatters
 2 | function lua_format#CopyDiffToBuffer(input, output, bufname)
 3 |   " prevent out of range in cickle
 4 |   let min_len = min([len(a:input), len(a:output)])
 5 | 
 6 |   " copy all lines, that was changed
 7 |   for i in range(0, min_len - 1)
 8 |     let output_line = a:output[i]
 9 |     let input_line  = a:input[i]
10 |     if input_line !=# output_line
11 |       call setline(i + 1, output_line) " lines calculate from 1, items - from 0
12 |     end
13 |   endfor
14 | 
15 |   " in this case we have to handle all lines, that was in range
16 |   if len(a:input) != len(a:output)
17 |     if min_len == len(a:output) " remove all extra lines from input
18 |       call deletebufline(a:bufname, min_len + 1, "$")
19 |     else " append all extra lines from output
20 |       call append("$", a:output[min_len:])
21 |     end
22 |   end
23 | 
24 |   " XXX if formatting is a long operation and we call after format start some
25 |   " other command, then window will display invalid data. For prevent this we
26 |   " just redraw the windows
27 |   redraw!
28 | endfunction
29 | 
30 | 
31 | 
32 | function lua_format#format()
33 |   let input = getline(1, "$")
34 | 
35 |   " in case of some error formatter print to stderr error message and exit
36 |   " with 0 code, so we need redirect stderr to file, for read message in case
37 |   " of some error. So let create a temporary file
38 |   let error_file = tempname()
39 | 
40 |   let flags = " -i "
41 | 
42 |   " we can use config file for formatting which we have to set manually
43 |   let config_file = findfile(".lua-format", ".;")
44 |   if empty(config_file) == 0 " append config_file to flags
45 |     let flags = flags . " -c " . config_file
46 |   end
47 | 
48 |   let output_str=system("lua-format " . flags . " 2> " . error_file, input)
49 | 
50 |   if empty(output_str) == 0 " all right
51 |     let output = split(output_str, "\n")
52 |     call lua_format#CopyDiffToBuffer(input, output, bufname("%"))
53 | 
54 |     " also clear lbuffer
55 |     lexpr ""
56 |     lwindow
57 |   else " we got error
58 |     let errors = readfile(error_file)
59 | 
60 |     " insert filename of current buffer in front of list. Need for errorformat
61 |     let source_file = bufname("%")
62 |     call insert(errors, source_file)
63 | 
64 |     set efm=%+P%f,line\ %l:%c\ %m,%-Q
65 |     lexpr errors
66 |     lwindow 5
67 |   end
68 | 
69 |   call delete(error_file)
70 | endfunction
71 | 


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/plugin/lua_format.vim:
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1 | function! LuaFormat()
2 |   call lua_format#format()
3 | endfunction
4 | 


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