vimrc

" Sections:
"    => Bundles
"    => General
"    => Text, tab and indent related
"    => Colors and Fonts
"    => Helper functions
"    => Mappings
"    => Buffers
"    => Conversion
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" => Bundles
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set nocompatible

let $VIMHOME = $HOME . "/.vim"
let $BUNDLES = $VIMHOME . "/bundles.vim"

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

set rtp+=~/.vim/bundle/Vundle.vim/
call vundle#rc()

if filereadable($BUNDLES)
    source $BUNDLES
endif

" Required!
filetype off

" Enable filetype plugins
filetype plugin on
filetype indent on


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" => General
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" Encoding dectection
set fileencodings=utf-8,gb2312,gb18030,gbk,ucs-bom,cp936,latin1

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

" Enable syntax highlight and completion
syntax on

" Search
set incsearch
set ignorecase
set smartcase
set hlsearch

" Editor settings
set history=1000
set tm=2000                        " leader key timeout
set nofoldenable                   " disable folding
set confirm                        " prompt when existing from an unsaved file
set backspace=indent,eol,start     " more powerful backspacing
set t_Co=256                       " explicitly tell vim that the terminal has 256 colors
set mouse=a                        " use mouse in all modes
set report=0                       " always report number of lines changed
set wrap                           " wrap lines
set scrolloff=5                    " 5 lines above/below cursor when scrolling
set number                         " show line numbers
set showmatch                      " show matching bracket (briefly jump)
set showcmd                        " show typed command in status bar
set title                          " show file in titlebar
set laststatus=2                   " use 2 lines for the status bar
set matchtime=2                    " show matching bracket for 0.2 seconds
set matchpairs+=<:>                " specially for html
set lazyredraw                     " don't redraw while executing macros (good performance config)
set magic                          " for regular expressions turn magic on
set foldcolumn=1                   " add a bit extra margin to the left
set backspace=eol,start,indent     " it acts as it should act
set wildmenu                       " wildmenu
set wildmode=longest,list,full     " tab complete files up to longest unambiguous prefix
set so=7                           " set 7 lines to the cursor - when moving vertically using j/k
set cc=80                          " color the 80th column
set foldmethod=syntax              " fold by syntax
set clipboard=unnamed              " copy selection to OS X clipboard
set whichwrap+=<,>,h,l

" Show trailing whitespace
set list
" But only interesting whitespace
if &listchars ==# 'eol:$'
    set listchars=tab:>\ ,trail:-,extends:>,precedes:<,nbsp:+
endif

" Turn backup off, since most stuff is in Git anyway...
set nobackup
set nowb
set noswapfile

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


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" => Text, tab and indent related
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set autoindent
set smartindent   " indent when
set tabstop=4     " tab width
set softtabstop=4 " backspace
set shiftwidth=4  " indent width
set expandtab     " expand tab to space
set smarttab
set formatoptions+=mM

" Linebreak on 500 characters
set lbr
set textwidth=500

augroup lang_config
    autocmd!
    autocmd FileType ruby setlocal tabstop=2 shiftwidth=2 softtabstop=2 textwidth=80
    autocmd FileType php setlocal tabstop=4 shiftwidth=4 softtabstop=4 textwidth=120
    autocmd FileType coffee,javascript,yaml setlocal tabstop=2 shiftwidth=2 softtabstop=2 textwidth=80
    autocmd FileType python setlocal tabstop=4 shiftwidth=4 softtabstop=4 textwidth=80
    autocmd FileType html,htmldjango,xhtml,haml setlocal tabstop=2 shiftwidth=2 softtabstop=2
    autocmd FileType sass,scss,css setlocal tabstop=2 shiftwidth=2 softtabstop=2 textwidth=80
    autocmd BufRead,BufNewFile *.tex setlocal tabstop=2 shiftwidth=2 softtabstop=2 textwidth=80 ft=tex
    autocmd BufEnter Makefile setlocal noexpandtab
    autocmd FileType mkd setlocal spell textwidth=80
    autocmd Filetype gitcommit setlocal spell textwidth=72
    autocmd BufRead,BufNewFile *.lua,*.c,*.py,*.sh,*.pl,*.rb,*.erb 2match Underlined /.\%81v/
augroup END


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" => Colors and Fonts
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let g:solarized_termcolors = 256
let g:solarized_termtrans = 1
set background=dark
try
    colorscheme solarized
catch
endtry


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" => Helper functions
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func! SetColorColumn()
    let col_num = virtcol(".")
    let cc_list = split(&cc, ',')
    if count(cc_list, string(col_num)) <= 0
        exe "set cc+=" . col_num
    else
        exe "set cc-=" . col_num
    endif
endfunc

func! DeleteTrailingWS()
    exe "normal mz"
    %s/\s\+$//ge
    exe "normal `z"
endfunc

" MyNext() and MyPrev(): Movement between tabs OR buffers
func! MyNext()
    if exists('*tabpagenr') && tabpagenr('$') != 1
        normal gt
    else
        exe ":bnext"
    endif
endfunc

func! MyPrev()
    if exists('*tabpagenr') && tabpagenr('$') != '1'
        normal gT
    else
        exe ":bprev"
    endif
endfunc

func! Header(word, ...)
    if exists("a:1") | let a:symbol = a:1 | else | let a:symbol = '#' | endif
    if exists("a:2") | let a:width = a:2 | else | let a:width = 80 | endif

    let a:inserted_word = '  ' . a:word . '  '
    let a:word_width = strlen(a:inserted_word)
    let a:length_before = (a:width - a:word_width) / 2
    let a:hashes_before = repeat(a:symbol, a:length_before)
    let a:hashes_after = repeat(a:symbol, a:width - (a:word_width + a:length_before))
    let a:hash_line = repeat(a:symbol, a:width)
    let a:word_line = a:hashes_before . a:inserted_word . a:hashes_after

    :put =a:hash_line | :put =a:word_line | :put =a:hash_line
endfunc


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" => Mappings
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cmap w!! w !sudo tee >/dev/null %

" Allow the normal use of "," by pressing it twice
noremap ,, ,

nnoremap ; :
noremap <leader>; ;

cmap WQ wq
cmap QA qa

inoremap jj <ESC>

if exists("$TMUX") == 0
    nnoremap <C-h> <C-w>h
    nnoremap <C-j> <C-w>j
    nnoremap <C-k> <C-w>k
    nnoremap <C-l> <C-w>l
endif

" Fix <Up> and <Down> keys inserting A B character
inoremap <Esc>OA <Esc>ki
inoremap <Esc>OB <Esc>ji
inoremap <Esc>OC <Right>
inoremap <Esc>OD <Left>

" Treat long lines as break lines (useful when moving around in them)
nnoremap j gj
nnoremap k gk

nnoremap <leader>hc :call SetColorColumn()<CR>
nnoremap <leader>dt :call DeleteTrailingWS()<CR>

" Force redraw
map <silent> \r :redraw!<CR>

" Toggle spell checking
map <leader>ss :setlocal spell!<CR>

" Quickly edit/reload the vimrc file
nmap <silent> <leader>ev :e $MYVIMRC<CR>
nmap <silent> <leader>sv :so $MYVIMRC<CR>

" Open file prompt with current path
nmap <leader>e :e <C-R>=expand("%:p:h") . '/'<CR>

" Disable highlight when <leader><CR> is pressed
" But preserve cursor coloring
map <silent> <leader><CR> :noh<CR>:hi Cursor ctermbg=red guibg=red<CR>

" Mappings for translation of snippets between multi Vim
vnoremap <leader>tee :!tee /tmp/t<CR>
vnoremap <leader>cat :!cat /tmp/t<CR>

" Movement between tabs OR buffers
nnoremap Q :call MyPrev()<CR>
nnoremap W :call MyNext()<CR>


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" => Buffers
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" Highlight current line
" autocmd WinLeave * set nocursorline nocursorcolumn
" autocmd WinEnter * set cursorline cursorcolumn
" set cursorline cursorcolumn

" Reload the buffer upon detecting change
set autoread
autocmd CursorHold,CursorHoldI * silent! checktime

" Clear column highlight theme
highlight clear SignColumn

" Delete trailing whitespace
augroup whitespace
    autocmd!
    autocmd BufWrite *.lua,*.pl,*.py,*.rb,*.md
        \ :call DeleteTrailingWS()
augroup END

" Source the vimrc file after saving it
augroup sourcing
    autocmd!
    autocmd BufWritePost .vimrc source $MYVIMRC
augroup END

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


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" => Conversion
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" Convert symbol to string
nnoremap <silent> <leader>2s F:r"Ea"<Esc>
" Convert string to symbol
nnoremap <silent> <leader>2y F"r:,x

" Visual substitute
vmap ss y:%s/<C-R>"/g<left><left>/

" Convert name to snake_case
nmap <leader>2_ cr_
" Convert name to camelCase
nmap <leader>2c crc
" Convert name to MixedCase
nmap <leader>2m crm
" Convert name to SNAKE_UPPERCASE
nmap <leader>2u cru
" Convert name to dash-case
nmap <leader>2- cr-