.vimrc

" Author: Stephen Chang
" 
" Note: Don't put anything in your .vimrc you don't understand!

" ==========================================
" Initial Plugin 加载插件
" ==========================================

" 修改 leader 键
let mapleader = ','
let g:mapleader = ','

" 开启语法高亮
syntax on

" vim-plug 插件
call plug#begin()
Plug 'mhinz/vim-startify'
Plug 'morhetz/gruvbox'
Plug 'tpope/vim-surround'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-commentary'
Plug 'preservim/nerdtree'
Plug 'airblade/vim-gitgutter'
Plug 'ctrlpvim/ctrlp.vim'
Plug 'easymotion/vim-easymotion'
Plug 'godlygeek/tabular'
Plug 'jiangmiao/auto-pairs'
Plug 'honza/vim-snippets'
Plug 'ybian/smartim'
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'ryanoasis/vim-devicons'
Plug 'yonchu/accelerated-smooth-scroll'
call plug#end()

" ==========================================
" General Settings 基础设置
" ==========================================

" 检测文件类型
filetype on
" 针对不同的文件类型采用不同的缩进格式
filetype indent on
" 允许插件
filetype plugin on
" 启动自动补全
filetype plugin indent on
" 文件修改之后自动载入
set autoread
" 启动的时候不显示那个援助乌干达儿童的提示
set shortmess=atI
" 关闭交换文件
set noswapfile
" 突出显示当前列
set cursorcolumn
" 突出显示当前行
set cursorline
" 鼠标暂不启用
set mouse-=a
" 启用鼠标
" set mouse=a
" Hide the mouse cursor while typing
" set mousehide
" 修复ctrl+m 多光标操作选择的bug，但是改变了ctrl+v进行字符选中时将包含光标下的字符
set selection=inclusive
set selectmode=mouse,key

" change the terminal's title
set title
" 去掉输入错误的提示声音
set novisualbell
set noerrorbells
set t_vb=
set tm=500

" Remember info about open buffers on close
set viminfo^=%

" For regular expressions turn magic on
set magic

" ==========================================
" Display Settings 展示/排版等界面格式设置
" ==========================================

" 显示当前的行号列号
set ruler
" 在状态栏显示正在输入的命令
set showcmd
" 左下角显示当前vim模式
set showmode

" 在上下移动光标时，光标的上方或下方至少会保留显示的行数
set scrolloff=7

" 命令行（在状态行下）的高度，默认为1，这里是2
set statusline=%<%f\ %h%m%r%=%k[%{(&fenc==\"\")?&enc:&fenc}%{(&bomb?\",BOM\":\"\")}]\ %-14.(%l,%c%V%)\ %P
" Always show the status line - use 2 lines for the status bar
set laststatus=2
" 显示行号
set number
" 显示相对行号
set relativenumber
" 取消换行
set nowrap
" 括号配对情况, 跳转并高亮一下匹配的括号
set showmatch
" How many tenths of a second to blink when matching brackets
set matchtime=2

" 设置文内智能搜索提示
" 高亮search命中的文本
set hlsearch
" 打开增量搜索模式,随着键入即时搜索
set incsearch
" 搜索时忽略大小写
set ignorecase
" 有一个或以上大写字母时仍大小写敏感
set smartcase

" 代码折叠
set foldenable
" 折叠方法
" manual    手工折叠
" indent    使用缩进表示折叠
" expr      使用表达式定义折叠
" syntax    使用语法定义折叠
" diff      对没有更改的文本进行折叠
" marker    使用标记进行折叠, 默认标记是 {{{ 和 }}}
set foldmethod=indent
set foldlevel=99
" 代码折叠自定义快捷键 <leader>zz
let g:FoldMethod = 0
map <leader>zz :call ToggleFold()<cr>
fun! ToggleFold()
    if g:FoldMethod == 0
        exe "normal! zM"
        let g:FoldMethod = 1
    else
        exe "normal! zR"
        let g:FoldMethod = 0
    endif
endfun

" 缩进配置
" Smart indent
set smartindent
" 打开自动缩进
" never add copyindent, case error   " copy the previous indentation on autoindenting
set autoindent

" tab相关变更
" 设置Tab键的宽度        [等同的空格个数]
set tabstop=4
" 每一次缩进对应的空格数
set shiftwidth=4
" 按退格键时可以一次删掉 4 个空格
set softtabstop=4
" insert tabs on the start of a line according to shiftwidth, not tabstop 按退格键时可以一次删掉 4 个空格
set smarttab
" 将Tab自动转化成空格[需要输入真正的Tab键时，使用 Ctrl+V + Tab]
set expandtab
" 缩进时，取整 use multiple of shiftwidth when indenting with '<' and '>'
set shiftround

" 防止tmux下vim的背景色显示异常
" Refer: http://sunaku.github.io/vim-256color-bce.html
if &term =~ '256color'
  " disable Background Color Erase (BCE) so that color schemes
  " render properly when inside 256-color tmux and GNU screen.
  " see also http://snk.tuxfamily.org/log/vim-256color-bce.html
  set t_ut=
endif

" ==========================================
" FileEncode Settings 文件编码,格式
" ==========================================
" 设置新文件的编码为 UTF-8
set encoding=utf-8
" 自动判断编码时，依次尝试以下编码：
set fileencodings=ucs-bom,utf-8,cp936,gb18030,big5,euc-jp,euc-kr,latin1
set helplang=cn
"set langmenu=zh_CN.UTF-8
"set enc=2byte-gb18030
" 下面这句只影响普通模式 (非图形界面) 下的 Vim
set termencoding=utf-8

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

" 如遇Unicode值大于255的文本，不必等到空格再折行
set formatoptions+=m
" 合并两行中文时，不在中间加空格
set formatoptions+=B

" ==========================================
" others 其它设置
" ==========================================
" vimrc文件修改之后自动加载, windows
autocmd! bufwritepost _vimrc source %
" vimrc文件修改之后自动加载, linux
autocmd! bufwritepost .vimrc source %

" ==========================================
" HotKey Settings  自定义快捷键设置
" ==========================================

" 主要按键重定义

" 关闭方向键, 强迫自己用 hjkl
map <Left> <Nop>
map <Right> <Nop>
map <Up> <Nop>
map <Down> <Nop>

" nerdtree 目录开关
map <C-n> :NERDTreeToggle<CR>

" CtrlP 开关
let g:ctrlp_map = '<c-p>'
let g:ctrlp_cmd = 'CtrlP'
" 搜索隐藏文件
let g:ctrlp_show_hidden = 1

" ==========================================
" Theme Settings  主题设置
" ==========================================

" theme主题
set background=dark
set t_Co=256

colorscheme gruvbox