.vimrc

" be vIMproved
set nocompatible

" enable plugins
filetype plugin on
" Pathogen 
"execute pathogen#infect()

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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

" Turn on the WiLd menu
set wildmenu

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

"Always show current position
set ruler

"show commands
set showcmd

" Show cursor line
set cursorline

" 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 tm=500

" mouse support
set mouse=a


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

" Set extra options when running in GUI mode
if has("gui_running")
  set guioptions-=T
  set guioptions+=e
  set t_Co=256
    set guitablabel=%M\ %t
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

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"" => Text, tab and indent related
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"" turn on line numbers
set number

" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

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

" Show trailing whitepace and spaces before a tab:
":highlight ExtraWhitespace ctermbg=red guibg=red
":autocmd Syntax * syn match ExtraWhitespace /\s\+$\| \+\ze\t/

" Delete trailing whitespace
"autocmd BufWritePre * :%s/\s\+$//e

" Linebreak on 500 characters
set lbr
set tw=500

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

" press F2 to disable autoindent for pasting text
set pastetoggle=<F2>


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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>

" Return to last edit position when opening files (You want this!)
autocmd BufReadPost *
     \ if line("'\"") > 0 && line("'\"") <= line("$") |
     \   exe "normal! g`\"" |
     \ endif

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

" Always show the status line
set laststatus=2

" Format the status line
set statusline=\ %{HasPaste()}%F%m%r%h\ %w\ \ CWD:\ %r%{getcwd()}%h\ \ \ Line:\ %l\ \ Column:\ %c


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" => Editing mappings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Stupid shift key fixes
map W w
cmap wQ wq
cmap Q q

" Yank from the cursor to the end of the line, to be consistent with C and D.
nnoremap Y y$

" get rid of wrapped text navigation
nnoremap j gj
nnoremap k gk
"
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"" => WINDOW MANAGEMENT
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"Vertical Split
map <Bar> <C-W>v<C-W><Right>
" Horizontal Split
map _ <C-W>s<C-W><Down>
" Switch Window
map <Tab> <C-W>w
" Reverse switch window
map <Esc>[Z <C-W>W
" Close window
map <C-c> <C-W>c

" Useful mappings for managing tabs
map <leader>tn :tabnew<cr>
map <leader>to :tabonly<cr>
map <leader>tc :tabclose<cr>
map <leader>tm :tabmove 
map <leader>tt :tabnext 

" Let 'tl' toggle between this and the last accessed tab
let g:lasttab = 1
nmap <Leader>tl :exe "tabn ".g:lasttab<CR>
au TabLeave * let g:lasttab = tabpagenr()

" Switch CWD to the directory of the open buffer
map <leader>cd :cd %:p:h<cr>:pwd<cr>

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" => Helper functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Returns true if paste mode is enabled
function! HasPaste()
    if &paste
        return 'PASTE MODE  '
    endif
    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

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

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

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

    if a:direction == 'gv'
        call CmdLine("Ack '" . l:pattern . "' " )
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    endif

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

" Delete trailing white space on save, useful for some filetypes ;)
fun! CleanExtraSpaces()
    let save_cursor = getpos(".")
    let old_query = getreg('/')
    silent! %s/\s\+$//e
    call setpos('.', save_cursor)
    call setreg('/', old_query)
endfun

set clipboard+=unnamed  " use the clipboards of vim and win
set go+=a               " Visual selection automatically copied to the clipboard


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Remove the Windows ^M - when the encodings gets messed up
noremap <Leader>m mmHmt:%s/<C-V><cr>//ge<cr>'tzt'm

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" => Nerd Tree
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:NERDTreeWinPos = "right"
let NERDTreeShowHidden=0
let NERDTreeIgnore = ['\.pyc$', '__pycache__']
let g:NERDTreeWinSize=35
map <leader>nn :NERDTreeToggle<cr>
map <leader>nb :NERDTreeFromBookmark<Space>
map <leader>nf :NERDTreeFind<cr>

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" => Vimroom
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
let g:goyo_width=100
let g:goyo_margin_top = 2
let g:goyo_margin_bottom = 2
nnoremap <silent> <leader>z :Goyo<cr>



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" => clang-format
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"function! Formatonsave()
"  let l:formatdiff = 1
"  py3f /usr/share/clang/clang-format-5.0/clang-format.py
"endfunction
"autocmd BufWritePre *.h,*.cc,*.cpp call Formatonsave()

map <C-K>:py3f /usr/share/clang/clang-format-5.0/clang-format.py<cr>
imap <C-K> <c-o>:py3f /usr/share/clang/clang-format-5.0/clang-format.py<cr>