my vimrc

" ----------------------
" | PART ONE: 原版命令 |
" ----------------------

" ======== 外 观 ========
" 行号
set number
set relativenumber

" 状态栏，0 不显示，1 只在多窗口时显示，2 一直显示
set laststatus=2

" 显示命令
set showcmd

" 空白字符
set list
set listchars=eol:$,tab:>-,trail:X

" colorscheme
syntax on
" set t_Co=256
set termguicolors

" ======== 显 示 ========

" 用于 coc.nvim
" update
set updatetime=300
" lazyredraw
set lazyredraw

" ======== 格 式 ========

" 编码
set encoding=utf-8

" wrap
set wrap

" 缩进
set smartindent
set tabstop=4
" 使得缩进大小是 shiftwidth 的倍数
set shiftround
set shiftwidth=4

" ======== 搜 索 ========

set hlsearch
set incsearch
" 搜索到结尾时不回头
set nowrapscan
" set ignorecase
set smartcase
" S : do not use [x/x] when search
set shortmess-=S

" ======== 文 件 ========

" 不创建备份文件和交换文件，理解原理后再设置回来
set nobackup
set swapfile
set noundofile

" 多窗口下光标移动到其他窗口时自动切换工作目录
set autochdir

" 文件自动检测外部更改
set autoread

" ======== 命 令 ========

" 命令行模式
set wildmenu
set wildmode=longest,full

" ======== 其 他 ========

" 鼠标
set mouse=a

" 输入括号时，会暂时跳转到匹配的括号
" set showmatch
" set matchtime=5

" 滚动
set scrolloff=0

" 窗口
" 新建的窗口会位于左下方
set splitbelow
set nosplitright

" 响铃
set vb t_vb=
au GuiEnter * set t_vb=

" 剪贴板
set clipboard+=unnamed

" viewdir
" set viewdir=

" ------------------
" | PART TWO: 变量 |
" ------------------

" ------------------------
" | PART THREE: 按键映射 |
" ------------------------

" ======== Leader ========

let mapleader="\<space>"
let maplocalleader="\\"

" <leader> e? edit file
" nnoremap <leader>en :vsplit ~/.vim/note<cr>
nnoremap <leader>ev :vsplit $MYVIMRC<cr>
" <leader> s? source file
nnoremap <leader>sv :source $MYVIMRC<cr>
" <leader> t? to workspace/project/folder
" nnoremap <leader>tn :Vexplore /mnt/e/Note<cr>
" nnoremap <leader>tn :Vexplore D:/Note<cr>

" buffer
nnoremap <leader>bb :buffers<cr>:b<space>
nnoremap <leader>bs :buffers<cr>:sb<space>

" window
nnoremap <leader>w <c-w>

" highlight
nnoremap <leader>h :set hlsearch!<cr>

" recent file
nnoremap <leader>r :browse oldfiles<cr>

vnoremap <leader>c :w<space>!clip.exe<cr><cr>

" ======== 移 动 ========

noremap H 0
noremap L $
noremap gH g0
noremap gL g$

" ======== 其 他 ========

" ESC 绑定
inoremap jk <esc>
" 禁用, 练习 jk 绑定
inoremap <esc> <nop>
inoremap <c-[> <nop>
" 终端
tnoremap jk <c-\><c-n>

" 括号自动补全
" inoremap { {}<left>
" inoremap { {<CR>}<Up><Enter>
" noremap ( ()<Left>
" noremap [ []<Left>
" noremap " ""<Left>
" noremap ' ''<Left>

" -------------------------
" | PART FOUR: 自定义命令 |
" -------------------------

" ======== Build with gcc ========
command -nargs=? Bgcc :terminal ++rows=10 ++shell gcc % -o %:r <args>
command -nargs=? Bgpp :terminal ++rows=10 ++shell g++ % -o %:r <args>
" 原版: 不使用 terminal, 运行完成后才能返回编辑
" command -nargs=? Bgcc :!clear; gcc % -o %:r <args>
command -nargs=? Bclang :terminal ++rows=10 ++shell clang % -o %:r <args>
command -nargs=? Bclangpp :terminal ++rows=10 ++shell clang++ % -o %:r <args>

" ======== Run current file ========
" Can use "<test.in" to redirect input file
" % 表示当前文件名, 修饰参数 :r 表示 root (移除一个扩展名). 可以 :h expand 查询具体用法
" <args> 表示参数. 如果参数中带有特殊字符 (如 "), 用 <q-args> 可以在特殊字符前加反斜杠
command -nargs=? R :terminal ++rows=10 ++shell ./%:r <args>
" 原版: 不使用 terminal
" command -nargs=? R :!clear; ./%:r <args>

" ======== markdown ========
" TODO 移动到专门用于处理 markdown 的脚本文件
" command MarkdownOutline :global/^#/#

" 定义一个函数，用于生成Markdown大纲
function! MarkdownOutline(...)
    " 检查参数的数量
    if a:0 == 0
        " 如果没有参数，显示所有层级的大纲
        let l:minlevel = 1
        let l:maxlevel = 6
    elseif a:0 == 1
        " 如果有一个参数，显示 1 到指定层级的大纲
        let l:minlevel = 1
        let l:maxlevel = a:1
    elseif a:0 == 2
        " 如果有两个参数，显示指定层级的大纲
        let l:minlevel = a:1
        let l:maxlevel = a:2
    else
        " 如果参数的数量不正确，显示错误消息
        echoerr 'Invalid number of arguments'
        return
    endif

    " 使用正则表达式匹配指定层级的标题
    " TODO '\v' 是垂直制表符
    let l:pattern = '\v^' . repeat('#', l:minlevel) . '[#]{0,' . (l:maxlevel - l:minlevel) . '} '

    " 使用:global命令查找匹配的行
    execute 'g/' . l:pattern
endfunction

" 定义一个命令，用于显示Markdown大纲
command! -nargs=* MarkdownOutline call MarkdownOutline(<f-args>)

command DiffWithSaved :w !diff --color % -

" -----------------------
" | PART FIVE: 自动命令 |
" -----------------------

" ======== filetype ========
if has("autocmd")
    autocmd  BufNewFile,Bufread *.g4 set filetype=pccts
    autocmd  BufNewFile,Bufread *.p8 set filetype=lua
endif

" ----------------------
" | PART SIX: 内置插件 |
" ----------------------

" ======== netrw tree ========

let g:netrw_banner=0 " 禁用没用的横幅
" let g:netrw_winsize=25 " 初始窗口大小为25%
" let g:netrw_liststyle=3 " 使用树状模式
" let g:netrw_altv=1 " 分割窗口时默认在右边
" let g:netrw_browse_split=4 " enter时在上一个窗口打开

" ======== markdown ========

set foldmethod=manual
set foldcolumn=0
" TODO highlight 选项的含义
highlight Folded ctermbg = NONE
highlight FoldColumn ctermbg = NONE
let g:markdown_folding = 1
let g:markdown_enable_folding = 1
let g:markdown_fenced_languages = ['c', 'cpp', 'cmake', 'lua', 'bash']

" --------------------
" | PART END: source |
" --------------------

" execute project related configuration in current directory
if filereadable(".vimrc.workspace")
    source .vimrc.workspace
endif

" other file to source (differs by each specific machine)
source $HOME/.vim/.vimrc.tosource