set nocompatible

set modelines=0 " for security

set encoding=utf-8

set mouse=""

set backspace=indent,eol,start

au FocusLost * :wa

" Leader ====----
nnoremap ,, ,
let mapleader=","
nnoremap <leader>; ;
nnoremap ; :

" Highlighting ====----
syntax on
filetype plugin indent on

set t_Co=256 " force enable 256-color mode.
if &t_Co >= 256 || has("gui_running")
  let base16colorspace=256
  colorscheme base16-default-dark
endif
if &t_Co > 2 || has("gui_running")
  syntax on
endif

" Indentation ====----
set shiftwidth=2
set tabstop=2
set expandtab
set shiftround " use multiple of shiftwidth with '<' and '>'
set autoindent
set copyindent " copy the previous line's indentation

" Search ====----
set incsearch
set hlsearch
set wrapscan
set ignorecase " ignore case when searching
set smartcase " ignore case if search pattern is all lowercase,
  " case-sensitive otherwise

nnoremap <silent> <leader><space> :noh<cr>

" Case insensitive
nmap * /\<<C-R>=expand('<cword>')<CR>\><CR>
nmap # ?\<<C-R>=expand('<cword>')<CR>\><CR>

set showmatch
nnoremap <tab> %
vnoremap <tab> %

" Screen ====----
"set nowrap
set wrap
"set textwidth=79
"set formatoptions=tqrn1
set colorcolumn=85
set ruler
set number
set relativenumber
set laststatus=2
set cursorline
"set showmode
set showcmd
set title " change the terminal's title
set scrolloff=3

set visualbell " don't beep
set noerrorbells " don't beep

set list
set listchars=tab:»\ ,extends:›,precedes:‹,nbsp:·,trail:·
"autocmd filetype html,xml set listchars-=tab:>.

set wildmenu
set wildmode=longest:full,full
set wildignore=*.swp,*.bak,*.pyc,*.class

set ttyfast

hi ColorColumn ctermbg=18
hi Folded ctermbg=0 ctermfg=12

" Stop using arrow keys ====----
noremap <up> <nop>
noremap <down> <nop>
noremap <left> <nop>
noremap <right> <nop>

" nnoremap j gj
" nnoremap k gk

" Splits ====----
nnoremap <leader>w <C-w>v<C-w>l
nnoremap <C-h> <C-w>h
nnoremap <C-j> <C-w>j
nnoremap <C-k> <C-w>k
nnoremap <C-l> <C-w>l

" History ====----
set history=1000 " remember more commands and search history
set undolevels=1000 " use many muchos levels of undo

if !isdirectory($HOME."/.vim")
  call mkdir($HOME."/.vim", "", 0770)
endif
if !isdirectory($HOME."/.vim/undo-dir")
  call mkdir($HOME."/.vim/undo-dir", "", 0700)
endif
set undodir=~/.vim/undo-dir
set undofile
" !!!! ADD THIS TO CRONTAB
" 43 0 * * 3 find /home/adam/.vim/undo-dir -type f -mtime +90 -delete

set nobackup
set noswapfile " Note: swap helps large files.

" Custom mappings ====----

" Quickly edit/reload the vimrc file
nnoremap <silent> <leader>ve :tabe $MYVIMRC<CR>
nnoremap <silent> <leader>vs :so $MYVIMRC<CR>

nnoremap <F2> :set invpaste paste?<CR>
set pastetoggle=<F2>
set showmode

nnoremap <leader>W :%s/\s\+$//<cr>:let @/=''<CR>
nnoremap <leader>ft Vatzf
nnoremap <leader>S ?{<CR>jV/^\s*\}?$<CR>k:sort<CR>:noh<CR>
nnoremap <leader>q gqip
nnoremap <leader>v V`]
nnoremap <leader>s :syntax sync fromstart<CR>

vnoremap Q gq
nnoremap Q gqap

cnoremap w!! w !sudo tee % >/dev/null

" helper function to toggle hex mode
function! ToggleHex()
  " hex mode should be considered a read-only operation
  " save values for modified and read-only for restoration later,
  " and clear the read-only flag for now
  let l:modified=&mod
  let l:oldreadonly=&readonly
  let &readonly=0
  let l:oldmodifiable=&modifiable
  let &modifiable=1
  if !exists("b:editHex") || !b:editHex
    " save old options
    let b:oldft=&ft
    let b:oldbin=&bin
    " set new options
    setlocal binary " make sure it overrides any textwidth, etc.
    let &ft="xxd"
    " set status
    let b:editHex=1
    " switch to hex editor
    %!xxd
  else
    " restore old options
    let &ft=b:oldft
    if !b:oldbin
      setlocal nobinary
    endif
    " set status
    let b:editHex=0
    " return to normal editing
    %!xxd -r
  endif
  " restore values for modified and read only state
  let &mod=l:modified
  let &readonly=l:oldreadonly
  let &modifiable=l:oldmodifiable
endfunction

command! -bar Hexmode call ToggleHex()
nnoremap <leader>h :Hexmode<CR>

function! NumberToggle()
  if(&relativenumber == 1)
    set number
  else
    set relativenumber
  endif
endfunc

nnoremap <leader>N :call NumberToggle()<cr>
autocmd InsertEnter * :set number
autocmd InsertLeave * :set relativenumber

" Custom functions ====----

function! SetLocalOptions(fname)
  let dirname = fnamemodify(a:fname, ":p:h")
  while "/" != dirname
    let lvimrc  = dirname . "/.vimrc.local"
    if filereadable(lvimrc)
      execute "source " . lvimrc
      break
    endif
    let dirname = fnamemodify(dirname, ":p:h:h")
  endwhile
endfunction

au BufNewFile,BufRead * call SetLocalOptions(bufname("%"))


" To move elsewhere ====----
au BufNewFile,BufRead *.less set filetype=less