.vimrc

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" => General
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" Sets how many lines of history VIM has to remember
set history=500

" Enable filetype plugins
filetype plugin on
filetype indent on

" Set to auto read when a file is changed from the outside
set autoread
au FocusGained,BufEnter * silent! checktime

" With a map leader it's possible to do extra key combinations
" like <Leader>w saves the current file
let mapleader = " "
let maplocalleader = " "

" :W sudo saves the file
" (useful for handling the permission-denied error)
command! W execute 'w !sudo tee % > /dev/null' <bar> edit!


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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=3

" Avoid garbled characters in Chinese language windows OS
let $LANG='en'
set langmenu=en
source $VIMRUNTIME/delmenu.vim
source $VIMRUNTIME/menu.vim

" Turn on the Wild menu
set wildmenu

" Pers custom
set splitright
set splitbelow
set number
set relativenumber
set timeoutlen=200
set mouse=a
set showmode
set clipboard=unnamedplus
set clipboard+=unnamedplus


" Ignore compiled files
set wildignore=*.o,*~,*.pyc
if has("win16") || has("win32")
    set wildignore+=.git\*,.hg\*,.svn\*
else
    set wildignore+=*/.git/*,*/.hg/*,*/.svn/*,*/.DS_Store
endif

" Always show current position
set ruler

" Height of the command bar
set cmdheight=1

" 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

set ignorecase
set smartcase
set hlsearch
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

" Properly disable sound on errors on MacVim
if has("gui_macvim")
    autocmd GUIEnter * set vb t_vb=
endif

" Add a bit extra margin to the left
set foldcolumn=1


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

" Set regular expression engine automatically
set regexpengine=0

" Enable 256 colors palette in Gnome Terminal
if $COLORTERM == 'gnome-terminal'
    set t_Co=256
endif

try
    colorscheme habamax
catch
endtry

" These are very good base themes
" colorscheme habamax
" colorscheme slate

" Wildcharm - very dark
" colorscheme wildcharm

" Less preferred but not horrid
" colorscheme sorbet
" Zai is not good
" colorscheme zaibatsu
" colorscheme lunarperche

set background=dark

" 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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" => Files, backups and undo
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" Turn backup off, since most stuff is in SVN, git etc. anyway...
set nobackup
set nowb
set noswapfile
set undolevels=1000


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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=4
set tabstop=4

" Linebreak on 500 characters
set lbr
set tw=500

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


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" => Visual mode related
""""""""""""""""""""""""""""""
" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :<C-u>call VisualSelection('', '')<CR>/<C-R>=@/<CR><CR>
vnoremap <silent> # :<C-u>call VisualSelection('', '')<CR>?<C-R>=@/<CR><CR>

" vnoremap <Leader>d "_d
" nnoremap <Leader>d "_d




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" => Custom mappings
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""" Base

" Exit insert
inoremap jj <Esc>

nnoremap <expr> j v:count ? (v:count > 5 ? "m'" . v:count : '') . 'j' : 'gj'
nnoremap <expr> k v:count ? (v:count > 5 ? "m'" . v:count : '') . 'k' : 'gk'

xnoremap <expr> j v:count ? (v:count > 5 ? "m'" . v:count : '') . 'j' : 'gj'
xnoremap <expr> k v:count ? (v:count > 5 ? "m'" . v:count : '') . 'k' : 'gk'


nnoremap <expr> n 'Nn'[v:searchforward].'zv'
xnoremap <expr> n 'Nn'[v:searchforward].'zv'
onoremap <expr> n 'Nn'[v:searchforward].'zv'

nnoremap <expr> N 'nN'[v:searchforward].'zv'
xnoremap <expr> N 'nN'[v:searchforward].'zv'
onoremap <expr> N 'nN'[v:searchforward].'zv'


nmap <Leader>? :terminal<CR>

tmap <Esc><Esc> "<c-\\><c-n>"
tmap <C-h> <cmd>wincmd h<CR>
tmap <C-j> <cmd>wincmd j<CR>
tmap <C-k> <cmd>wincmd k<CR>
tmap <C-l> <cmd>wincmd l<CR>
tmap <C-/> <cmd>close<cr>
tmap <C-_> <cmd>close<cr>

" Brackets
" This technically opens a new line and brackets etc.
" inoremap { {<CR>}<Esc>ko<Tab>
inoremap { {}<Esc>i
inoremap " ""<Esc>i
inoremap ( ()<Esc>i
inoremap [ []<Esc>i


" Easy Save
noremap <C-s> :w!<CR>
" Quick Quit
noremap <S-z> :q!<CR>
" Select All
nnoremap <C-a> gg<S-v>G


""" Movement

" Scrolling
nnoremap <C-u> <C-u>zz
nnoremap <C-d> <C-d>zz

" Home / End
nnoremap <S-h> ^
nnoremap <S-l> $

vnoremap <S-h> ^
vnoremap <S-l> $

""" Sub modes/operations - yank, delete etc
nnoremap y<S-h> y^
nnoremap y<S-l> y$

nnoremap d<S-h> d^
nnoremap d<S-l> d$

""" Pasting
vmap p "_dP
nnoremap <S-p> <S-p><CR>


""" Window resizing
nnoremap <Left> :vertical resize -2<CR>
nnoremap <Right> :vertical resize +2<CR>

nnoremap <C-h> :vertical resize +2<CR>
nnoremap <C-l> :vertical resize -2<CR>

nnoremap <C-w>, :vertical resize -10<CR>
nnoremap <C-w>. :vertical resize +10<CR>

nnoremap <Up> :resize -2<CR>
nnoremap <Down> :resize +2<CR>


nnoremap <C-w>e <C-w>=
nnoremap <C-w>X <cmd>only<CR>


" Recent messages
nnoremap <Leader>um :messages<CR>

nnoremap <Leader>e :Explore<CR>


vnoremap p "_dP
vnoremap <C-j> :m '>+1<CR>gv=gv
vnoremap <C-k> :m '<-2<CR>gv=gv
vnoremap < <gv
vnoremap > >gv

"nnoremap dd "_dd


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" => Moving around, tabs, windows and buffers
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" Map <Space> to / (search) and Ctrl-<Space> to ? (backwards search)
" map <space> /
" map <C-space> ?

" Disable highlight when <Leader><CR> is pressed
" map <silent> <Leader><CR> :noh<CR>
" nmap <silent> <Del> :noh<CR>
nmap <silent> <Esc> :nohl<CR>

" 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

" Close the current buffer
map <silent> <Leader>x :Bclose<CR>
map <silent> <Leader>bx :Bclose<CR>:tabclose<CR>gT


nmap ]b :bnext<CR>
nmap [b :bprevious<CR>



" Close all the buffers
map <Leader>bw :bufdo bd<CR>

map <Leader>l :bnext<CR>
map <Leader>h :bprevious<CR>

map <Leader>bn :bnext<CR>
map <Leader>bp :bprevious<CR>

" Useful mappings for managing tabs
" Tab Open
map <Leader>to :tabnew<CR>

" Tab next / prev
map <Leader>tn :tabnext<CR>
map <Leader>tp :tabprevious<CR>

" tab zero = Only one, closes other
map <Leader>tz :tabonly<CR>

" Tab x / kill / close
map <Leader>tx :tabclose<CR>

map <Leader>tm :tabmove
" map <Leader>t<Leader> :tabnext<CR>

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


" Opens a new tab with the current buffer's path
" Super useful when editing files in the same directory
map <Leader>te :tabedit <C-r>=escape(expand("%:p:h"), " ")<CR>/

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

" 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!)
au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif


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" => Status line
""""""""""""""""""""""""""""""
" 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
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" Remap VIM 0 to first non-blank character
" map 0 ^

" Move a line of text using ALT+[jk] or Command+[jk] on mac
nmap <A-j> mz:m+<CR>`z
nmap <A-k> mz:m-2<CR>`z
vmap <A-j> :m'>+<CR>`<my`>mzgv`yo`z
vmap <A-k> :m'<-2<CR>`>my`<mzgv`yo`z

"if has("mac") || has("macunix")
"  nmap <D-j> <M-j>
"  nmap <D-k> <M-k>
"  vmap <D-j> <M-j>
"  vmap <D-k> <M-k>
"endif

" 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

if has("autocmd")
    autocmd BufWritePre *.txt,*.js,*.py,*.wiki,*.sh,*.coffee :call CleanExtraSpaces()
endif


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

" Pressing <Leader>us will toggle and untoggle spell checking
map <Leader>us :setlocal spell!<CR>

" Quickly open a buffer for scribble
map <Leader>un :e ~/buffer<CR>

" Quickly open a markdown buffer for scribble
map <Leader>nd :e ~/buffer.md<CR>

" Toggle paste mode on and off
map <Leader>up :setlocal paste!<CR>


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" => Helper functions
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" 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)
    call feedkeys(":" . a:str)
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