vimrc

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" 
" This file was copied from 
"    https://raw.githubusercontent.com/amix/vimrc/master/vimrcs/basic.vim
" and I did a few modifications for NERDTree, TagList and CtrlIP
"
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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

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

" Fast saving
nmap <leader>w :w!<cr>

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


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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

" 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

" 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

"Always show current position
set ruler

" 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 t_vb=
set tm=500

" 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 

try
    colorscheme desert
catch
endtry

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=%-0.12t%M
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 et.c anyway...
set nobackup
set nowb
set noswapfile


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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 wrap "Wrap lines


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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>


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" => Moving around, tabs, windows and buffers
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" Treat long lines as break lines (useful when moving around in them)
map j gj
map k gk

" 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>

" 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 <leader>bd :Bclose<cr>:tabclose<cr>gT

" Close all the buffers
map <leader>ba :bufdo bd<cr>

map <leader>l :bnext<cr>
map <leader>h :bprevious<cr>

" 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>t<leader> :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()


" 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>=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!)
" autocmd BufReadPost *
"      \ if line("'\"") > 0 && line("'\"") <= line("$") |
"      \   exe "normal! g`\"" |
"      \ endif
" Remember info about open buffers on close
" set viminfo^=%


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" => Status line
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" 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


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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 Comamnd+[jk] on mac
nmap <M-j> mz:m+<cr>`z
nmap <M-k> mz:m-2<cr>`z
vmap <M-j> :m'>+<cr>`<my`>mzgv`yo`z
vmap <M-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 Python and CoffeeScript ;)
func! DeleteTrailingWS()
  exe "normal mz"
  %s/\s\+$//ge
  exe "normal `z"
endfunc
" autocmd BufWrite *.py :call DeleteTrailingWS()
" autocmd BufWrite *.coffee :call DeleteTrailingWS()


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" => Ag searching and cope displaying
"    requires ag.vim - it's much better than vimgrep/grep
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" When you press gv you Ag after the selected text
vnoremap <silent> gv :call VisualSelection('gv', '')<CR>

" Open Ag and put the cursor in the right position
map <leader>g :Ag 

" When you press <leader>r you can search and replace the selected text
vnoremap <silent> <leader>r :call VisualSelection('replace', '')<CR>

" Do :help cope if you are unsure what cope is. It's super useful!
"
" When you search with Ag, display your results in cope by doing:
"   <leader>cc
"
" To go to the next search result do:
"   <leader>n
"
" To go to the previous search results do:
"   <leader>p
"
map <leader>cc :botright cope<cr>
map <leader>co ggVGy:tabnew<cr>:set syntax=qf<cr>pgg
map <leader>n :cn<cr>
map <leader>p :cp<cr>


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

" Quickly open a buffer for scribble
map <leader>q :e ~/buffer<cr>

" Quickly open a markdown buffer for scribble
map <leader>x :e ~/buffer.md<cr>

" Toggle paste mode on and off
map <leader>pp :setlocal paste!<cr>




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" => Helper functions
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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 == 'b'
        execute "normal ?" . l:pattern . "^M"
    elseif a:direction == 'gv'
        call CmdLine("Ag \"" . l:pattern . "\" " )
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    elseif a:direction == 'f'
        execute "normal /" . l:pattern . "^M"
    endif

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

" Make VIM remember position in file after reopen
" if has("autocmd")
"   au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
"endif
"



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" Added by showalski
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" Change the default width of taglist window. After setting reopen taglist windown to take effect.
" let Tlist_WinWidth = somenumber
" Map F8 to open or close TagList window
nnoremap <silent> <F8> :TlistToggle<CR>
" Let Tlist_Ctags_Cmd point to right ctags as code server's default ctags points to
" etags
let Tlist_Ctags_Cmd="/usr/bin/ctags"
" Resove errors about E484: Can't open file /tmp/vUPw0po/0
set shell=/bin/bash

" change highlight color:fg=black, bg=darkred
hi Search cterm=NONE ctermfg=black ctermbg=darkred

" NERDTree
" Set the window width
let g:NERDTreeWinSize = 23
" Set the window position
let g:NERDTreeWinPos = "right"
" Auto centre
let g:NERDTreeAutoCenter = 0
" Not Highlight the cursor line
let g:NERDTreeHighlightCursorline = 0
" Map F9 to open or close NERDTree window
nnoremap <silent> <F9> : NERDTreeToggle<CR>
" After setting this i can open files form NERDTree window
set modifiable


" show cursorline only in active window of vim
augroup CursorLineOnlyInActiveWindow
  autocmd!
  autocmd VimEnter,WinEnter,BufWinEnter * setlocal cursorline
  autocmd WinLeave * setlocal nocursorline
augroup END

" change line number color
hi LineNr         ctermfg=DarkMagenta guifg=#2b506e guibg=#000000 
" change line color
" Used at home
 hi CursorLine   cterm=NONE ctermbg=LightGray ctermfg=Black
" Used at office 
"hi CursorLine   cterm=NONE ctermbg=LightBlue

" show shady characters:tabs, trailing white spaces.
set listchars=tab:>~,nbsp:_,trail:.
set list

" eliminate extra spaces when paste code info C file. When pasting code enter F3
set pastetoggle=<F3>
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" Configuration for CtrlP
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set runtimepath^=~/.vim/bundle/ctrlp.vim
let g:ctrlp_map = ',,'
let g:ctrlp_cmd = 'CtrlP'

let g:ctrlp_working_path_mode = 'ra'
let g:ctrlp_max_files=0

" Exclude files or directories
set wildignore+=*.so,*.o,*.swp,*.zip,*gz,*bz2

set nu
set statusline+=col:\ %c

"highlights the background in a subtle red for text that goes over the 80 column limit
highlight OverLength ctermbg=red ctermfg=white guibg=#592929
match OverLength /\%81v.\+/