dot_vimrc

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" Source_version:
"       http://amix.dk/vim/vimrc.txt
"
" Sections:
"    -> General
"    -> VIM user interface
"    -> Colors and Fonts
"    -> Files and backups
"    -> Text, tab and indent related
"    -> Visual mode related
"    -> Moving around, tabs and buffers
"    -> Status line
"    -> Helper functions
"
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" => General
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" Sets how many lines of history VIM has to remember
set history=700


" Set to auto read when a file is changed from the outside
set autoread

set nocompatible

let mapleader = "," " map leader to comma

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" => Vundle
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if has('nvim')
  call plug#begin('~/.config/nvim/plugged')
else
  call plug#begin('~/.vim/plugged')
endif
Plug 'bling/vim-airline'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-unimpaired'
Plug 'derekwyatt/vim-scala', { 'for': 'scala' }
Plug 'elzr/vim-json', { 'for': 'json' }
Plug 'kien/ctrlp.vim'
Plug 'tpope/vim-repeat'
Plug 'tomtom/tcomment_vim'
Plug 'groenewege/vim-less'
Plug 'tpope/vim-fugitive'
Plug 'bomgar/breakit.vim'
Plug 'pangloss/vim-javascript'
Plug 'rust-lang/rust.vim'
Plug 'scrooloose/syntastic'
Plug 'tpope/vim-abolish'
Plug 'terryma/vim-multiple-cursors'
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'airblade/vim-gitgutter'
Plug 'joshdick/onedark.vim'
call plug#end()

" Enable filetype plugins
filetype plugin on
filetype indent on

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" => VIM user interface
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" Set 7 lines to the cursor - when moving vertically using j/k
set so=7

" Sho line numbers
set nu

" Turn on the WiLd menu
set wildmenu

" Ignore compiled files
set wildignore=*.o,*~,*.pyc,*.class

"Always show current position
set ruler

" Height of the command bar
set cmdheight=2

" A buffer becomes hidden when it is abandoned
set hid

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch

" Don't redraw while executing macros (good performance config)
set lazyredraw

" For regular expressions turn magic on
set magic

" Show matching brackets when text indicator is over them
set showmatch
" How many tenths of a second to blink when matching brackets
set mat=2

" No annoying sound on errors
set noerrorbells
set novisualbell
set t_vb=
set tm=500

set mouse-=a

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" => Colors and Fonts
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" Enable syntax highlighting
syntax enable

"set background=dark
if v:version > 703
  set background=dark
  colorscheme onedark
endif

set t_Co=256

" Set extra options when running in GUI mode
if has("gui_running")
    set guioptions-=T
    set guioptions+=e
    set guitablabel=%M\ %t
    set lines=50 columns=120
    if has("win32")
      set guifont=Lucida_Console:h12:cANSI
    else
      set guifont=DejaVu\ Sans\ Mono\ 11
    end
endif

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" Use Unix as the standard file type
set ffs=unix,dos,mac

set listchars=eol:¶,tab:»·,trail:·,extends:»,precedes:«

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" => Files, backups and undo
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" Turn backup off, since most stuff is in SVN, git et.c anyway...
set nobackup
set nowb
set noswapfile


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" => Text, tab and indent related
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" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=2
set tabstop=2

" Linebreak on 500 characters
set lbr
set tw=500

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines


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" => Visual mode related
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" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :call VisualSelection('f')<CR>
vnoremap <silent> # :call VisualSelection('b')<CR>

"hi Visual term=reverse cterm=reverse guibg=Grey

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" => Moving around, tabs, windows and buffers
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" Treat long lines as break lines (useful when moving around in them)
map j gj
map k gk

" Smart way to move between windows
map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l


" Specify the behavior when switching between buffers
try
  set switchbuf=useopen,usetab,newtab
  set stal=2
catch
endtry

" Return to last edit position when opening files (You want this!)
autocmd BufReadPost *
    \ if expand('%:p') !~# '\m/\.git/' && line("'\"") > 0 && line("'\"") <= line("$") |
    \     exe "normal! g`\"" |
    \ endif

" Remember info about open buffers on close
set viminfo^=%


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" => Status line
""""""""""""""""""""""""""""""
" Always show the status line
set laststatus=2

" Format the status line


"set statusline=
"set statusline+=%7*\[%n]                                  "buffernr
"set statusline+=%1*\ %<%F\                                "File+path
"set statusline+=%2*\ %y\                                  "FileType
"set statusline+=%3*\ %{''.(&fenc!=''?&fenc:&enc).''}      "Encoding
"set statusline+=%3*\ %{(&bomb?\",BOM\":\"\")}\            "Encoding2
"set statusline+=%4*\ %{&ff}\                              "FileFormat (dos/unix..)
"set statusline+=%1*\ %{HasPaste()}                        "paste mode
"set statusline+=%8*\ %=\ row:%l/%L\ (%03p%%)\             "Rownumber/total (%)
"set statusline+=%9*\ col:%03c\                            "Colnr
"set statusline+=%0*\ \ %m%r%w\ %P\ \                      "Modified? Readonly? Top/bot.

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" => Editing mappings
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" Remap VIM 0 to first non-blank character
"map 0 ^


" Delete trailing white space on save, useful for Python and CoffeeScript ;)
func! DeleteTrailingWS()
  exe "normal mz"
  %s/\s\+$//ge
  exe "normal `z"
endfunc
autocmd BufWrite *.pp :call DeleteTrailingWS()
autocmd BufWrite *.java :call DeleteTrailingWS()


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" => Airline
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let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#show_buffers = 1

if !exists('g:airline_symbols')
  let g:airline_symbols = {}
endif

if !has("win32")
  " unicode symbols
  let g:airline_left_sep = '▶'
  let g:airline_right_sep = '◀'
  let g:airline_symbols.branch = '⎇'
endif

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" => NERDTree
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map <leader>n :NERDTreeToggle<CR>

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" => GitGutter
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map <leader>g :GitGutterToggle<CR>

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" => JSON
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let g:vim_json_syntax_conceal = 0

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" => ctrlp
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let g:ctrlp_custom_ignore = {
  \ 'dir':  '\v[\/](\.(git|hg|svn))|(target)$',
  \ 'file': '\v\.(exe|so|dll|jar)$',
  \ }


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" => completion
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set omnifunc=syntaxcomplete#Complete
inoremap <C-Space> <C-p>
inoremap <M-Space> <C-X><C-O>

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" => syntastic
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let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0

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" => line numbers
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nnoremap <silent><leader>r :set relativenumber!<cr>
"
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" => folding
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nnoremap <F9> :set foldmethod=syntax<CR>

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" => Helper functions
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function! CmdLine(str)
    exe "menu Foo.Bar :" . a:str
    emenu Foo.Bar
    unmenu Foo
endfunction

function! VisualSelection(direction) range
    let l:saved_reg = @"
    execute "normal! vgvy"

    let l:pattern = escape(@", '\\/.*$^~[]')
    let l:pattern = substitute(l:pattern, "\n$", "", "")

    if a:direction == 'b'
        execute "normal ?" . l:pattern . "^M"
    elseif a:direction == 'gv'
        call CmdLine("vimgrep " . '/'. l:pattern . '/' . ' **/*.')
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    elseif a:direction == 'f'
        execute "normal /" . l:pattern . "^M"
    endif

    let @/ = l:pattern
    let @" = l:saved_reg
endfunction


" Returns true if paste mode is enabled
function! HasPaste()
    if &paste
        return 'PASTE MODE  '
    en
    return ''
endfunction

" Don't close window, when deleting a buffer
command! Bclose call <SID>BufcloseCloseIt()
function! <SID>BufcloseCloseIt()
   let l:currentBufNum = bufnr("%")
   let l:alternateBufNum = bufnr("#")

   if buflisted(l:alternateBufNum)
     buffer #
   else
     bnext
   endif

   if bufnr("%") == l:currentBufNum
     new
   endif

   if buflisted(l:currentBufNum)
     execute("bdelete! ".l:currentBufNum)
   endif
endfunction