basic.vim

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" => General
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" Sets how many lines of history VIM has to remember
set history=50
set cursorline cul
set nocompatible

" Enable filetype plugins
filetype plugin on
filetype indent on

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

let mapleader = ","

noremap <leader>e :q<cr>
noremap <leader>E :qa!<cr>

nmap <leader>w :w!<cr>
nmap <c-z> :update<cr>
vmap <c-z> <esc>:update<cr>gv
imap <c-z> <esc> :update<cr>i

" Add new line on Enter in normal mode
map <Enter> o<ESC>


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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

let $LANG='en'
set langmenu=en
source $VIMRUNTIME/delmenu.vim
source $VIMRUNTIME/menu.vim

set wildmenu  " turn on the Wild menu
" Ignore compiled files
set wildignore=*.o,*~,*.pyc,*/.git/*,*/.hg/*,*/.svn/*,*/.DS_Store

set ruler        " always show current position
set cmdheight=2  " height of the command bar
set hid          " a buffer becomes hidden when it is abandoned

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

set ignorecase " ignore case when searching
set smartcase  " when searching try to be smart about cases
set hlsearch   " highlight search results
set incsearch  " makes search act like search in modern browsers

set lazyredraw " don't redraw while executing macros (good performance config)
set magic      " for regular expressions turn magic on

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

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

set number  " show line numbers
set tw=79   " width of document (used by gd)
set fo-=t   " don't automatically wrap text when typing
set colorcolumn=80
highlight ColorColumn ctermbg=233

set expandtab  " use spaces instead of tabs
set smarttab   " be smart when using tabs ;)
" 1 tab == 4 spaces
set shiftwidth=4
set tabstop=4

set ai  " auto indent
set si  " smart indent

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


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

set background=dark

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

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


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" => Files, backups and undo (turn backup off)
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set nobackup
set nowritebackup
set noswapfile

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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> * :<C-u>call VisualSelection('', '')<CR>/<C-R>=@/<CR><CR>
vnoremap <silent> # :<C-u>call VisualSelection('', '')<CR>?<C-R>=@/<CR><CR>


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" => Moving around, tabs, windows and buffers
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" map <space> to / (search)
map <space> /
" disable highlight
map <silent> <leader><cr> :noh<cr>

set clipboard=unnamedplus

" 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
set winwidth=90
set wmw=20

" easier moving of code blocks
vnoremap < <gv
vnoremap > >gv

" folding options
set nofoldenable
set foldmethod=manual
set foldlevel=99

" Useful mappings for managing tabs
noremap <leader>to :tabnew<cr>
noremap <leader>tn :tabn<cr>
noremap <leader>tp :tabp<cr>
noremap <leader>tm :tabmove<cr>

map <leader>pp :setlocal paste!<cr>

" 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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" => Editing mappings
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" Move a line of text using cntr+[jk]
vmap <c-j> :m'>+<cr>`<my`>mzgv`yo`z
vmap <c-k> :m'<-2<cr>`>my`<mzgv`yo`z

" 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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" => Spell checking
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" Pressing ,ss will toggle and untoggle spell checking
map <leader>ss :setlocal spell!<cr>

" Shortcuts using <leader>
map <leader>sn ]s
map <leader>sp [s
map <leader>sa zg
map <leader>s? z=


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" => JSON formating
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map <leader><space> :call PrettifyJSON()<cr>


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" => Helper functions
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" Format json
function! PrettifyJSON()
    set filetype=json
    execute("%!jq '.'")
endfunction

" 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