My vimrc

" Vim with all enhancements
source $VIMRUNTIME/vimrc_example.vim

" Remap a few keys for Windows behavior
source $VIMRUNTIME/mswin.vim

" Use the internal diff if available.
" Otherwise use the special 'diffexpr' for Windows.
if &diffopt !~# 'internal'
  set diffexpr=MyDiff()
endif
function MyDiff()
  let opt = '-a --binary '
  if &diffopt =~ 'icase' | let opt = opt . '-i ' | endif
  if &diffopt =~ 'iwhite' | let opt = opt . '-b ' | endif
  let arg1 = v:fname_in
  if arg1 =~ ' ' | let arg1 = '"' . arg1 . '"' | endif
  let arg1 = substitute(arg1, '!', '\!', 'g')
  let arg2 = v:fname_new
  if arg2 =~ ' ' | let arg2 = '"' . arg2 . '"' | endif
  let arg2 = substitute(arg2, '!', '\!', 'g')
  let arg3 = v:fname_out
  if arg3 =~ ' ' | let arg3 = '"' . arg3 . '"' | endif
  let arg3 = substitute(arg3, '!', '\!', 'g')
  if $VIMRUNTIME =~ ' '
    if &sh =~ '\<cmd'
      if empty(&shellxquote)
        let l:shxq_sav = ''
        set shellxquote&
      endif
      let cmd = '"' . $VIMRUNTIME . '\diff"'
    else
      let cmd = substitute($VIMRUNTIME, ' ', '" ', '') . '\diff"'
    endif
  else
    let cmd = $VIMRUNTIME . '\diff'
  endif
  let cmd = substitute(cmd, '!', '\!', 'g')
  silent execute '!' . cmd . ' ' . opt . arg1 . ' ' . arg2 . ' > ' . arg3
  if exists('l:shxq_sav')
    let &shellxquote=l:shxq_sav
  endif
endfunction

set encoding=utf-8  "设置文件的代码形式 utf8
set termencoding=utf-8
set fileencoding=utf-8
set fileencodings=ucs-bom,utf-8,chinese,cp936
set relativenumber

:inoremap ( ()<ESC>i
:inoremap ) <c-r>=ClosePair(')')<CR>
:inoremap { {<CR>}<ESC>O
:inoremap } <c-r>=ClosePair('}')<CR>
:inoremap [ []<ESC>i
:inoremap ] <c-r>=ClosePair(']')<CR>
:inoremap " ""<ESC>i
:inoremap ' ''<ESC>i
function! ClosePair(char)
    if getline('.')[col('.') - 1] == a:char
        return "\<Right>"
    else
        return a:char
    endif
endfunction

set number
syntax on
set autoindent
set tabstop=4
set softtabstop=4
set shiftwidth=4


set smartindent

map <C-A> ggVGY     "映射全选 ctrl+A

vmap <C-C> "+y      "映射复制 ctrl+C

map <C-V> "+gP      "映射粘贴ctrl+V

set history=1000


set nobackup
set noswapfile
set noexpandtab
set noundofile

"Vim_plug
call plug#begin('~/vimfiles/plugged')
Plug 'scrooloose/nerdtree'
Plug 'tomasiser/vim-code-dark'
Plug 'vim-airline/vim-airline'
Plug 'morhetz/gruvbox'
Plug 'Yggdroot/indentLine'
Plug 'preservim/tagbar'
Plug 'vim-airline/vim-airline-themes'
Plug 'nanotech/jellybeans.vim'
"Plug 'valloric/youcompleteme'
Plug 'neoclide/coc.nvim', {'branch': 'release'}
call plug#end()

set laststatus=2  "永远显示状态栏
let g:airline_powerline_fonts = 1  " 支持 powerline 字体
let g:airline#extensions#tabline#enabled = 1

colorscheme retrobox
map <F2> :NERDTreeToggle<CR>


set guifont=Cascadia_Mono:h14

func! CompileGcc()
    exec "w"
    let compilecmd="!gcc "
    let compileflag="-o %< "
    if search("mpi\.h") != 0
        let compilecmd = "!mpicc "
    endif
    if search("glut\.h") != 0
        let compileflag .= " -lglut -lGLU -lGL "
    endif
    if search("cv\.h") != 0
        let compileflag .= " -lcv -lhighgui -lcvaux "
    endif
    if search("omp\.h") != 0
        let compileflag .= " -fopenmp "
    endif
    if search("math\.h") != 0
        let compileflag .= " -lm "
    endif
    exec compilecmd." % ".compileflag
endfunc
func! CompileGpp()
    exec "w"
    let compilecmd="!clang++"
    let compileflag="-o %<.exe "
    if search("mpi\.h") != 0
        let compilecmd = "!mpic++ "
    endif
    if search("glut\.h") != 0
        let compileflag .= " -lglut -lGLU -lGL "
    endif
    if search("cv\.h") != 0
        let compileflag .= " -lcv -lhighgui -lcvaux "
    endif
    if search("omp\.h") != 0
        let compileflag .= " -fopenmp "
    endif
    if search("math\.h") != 0
        let compileflag .= " -lm "
    endif
    exec compilecmd." % ".compileflag
endfunc

func! RunPython()
        exec "!python %"
endfunc
func! CompileJava()
    exec "!javac %"
endfunc


func! CompileCode()
        exec "w"
        if &filetype == "cpp"
                exec "call CompileGpp()"
        elseif &filetype == "c"
                exec "call CompileGcc()"
        elseif &filetype == "python"
                exec "call RunPython()"
        elseif &filetype == "java"
                exec "call CompileJava()"
        endif
endfunc

func! RunResult()
        exec "w"
        if search("mpi\.h") != 0
            exec "!mpirun -np 4 ./%<"
        elseif &filetype == "cpp"
            exec "! %<"
        elseif &filetype == "c"
            exec "! %<"
        elseif &filetype == "python"
            exec "call RunPython"
        elseif &filetype == "java"
            exec "!java %<"
        endif
endfunc

map <F5> :call CompileCode()<CR>
imap <F5> <ESC>:call CompileCode()<CR>
vmap <F5> <ESC>:call CompileCode()<CR>

map <F6> :call RunResult()<CR>

autocmd BufNewFile *.cpp 0r ~\vimfiles\template\a.cpp

nmap <F8> :TagbarToggle<CR>
nmap <F3> :bnext<CR>

"coc plugin
set hidden
set updatetime=100
inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

"indentLine plugin


augroup VIMRC
    au!
    au BufWritePost .vimrc so %
augroup END