.vimrc

set nocompatible

" ---------------------------------------------------------------------------- "
" Plugins                                                                      "
" ---------------------------------------------------------------------------- "

if !has('nvim')
    let g:polyglot_disabled = ['autoindent', 'sensible']

    call plug#begin('~/.vim/plugged')
    Plug 'ap/vim-buftabline'
    Plug 'ervandew/supertab'
    Plug 'itchyny/lightline.vim'
    Plug 'mbbill/undotree'
    Plug 'moll/vim-bbye'
    Plug 'tpope/vim-commentary'
    Plug 'tpope/vim-fugitive'
    Plug 'tpope/vim-sleuth'
    Plug 'tpope/vim-surround'
    Plug 'lifepillar/vim-solarized8'
    Plug 'sheerun/vim-polyglot'
    Plug 'junegunn/fzf',                    { 'do': 'yes \| ./install' }
    Plug 'junegunn/fzf.vim'
    Plug 'lervag/vimtex',                       { 'for': 'tex' }
    Plug 'llvm/llvm.vim',                       { 'for': 'llvm' }
    Plug 'racer-rust/vim-racer',                { 'for': 'rust' }
    Plug 'vim-scripts/doxygentoolkit.vim',      { 'for': 'cpp' }
    call plug#end()
endif

" ---------------------------------------------------------------------------- "
" General Settings                                                             "
" ---------------------------------------------------------------------------- "

filetype plugin indent on
set background=dark

if has("termguicolors")
    let &t_8f="\<Esc>[38;2;%lu;%lu;%lum"
    let &t_8b="\<Esc>[48;2;%lu;%lu;%lum"
    set termguicolors
endif

if !has('nvim')
    try
        colorscheme solarized8
    catch
    endtry
endif

if !exists("g:syntax_on")
    syntax enable
endif

set autoread                    " Auto reload file after external command
set backspace=indent,eol,start  " Delete over line breaks
set colorcolumn=80,120          " Show ruler columns
set encoding=utf-8              " Use UTF-8 encoding
set hidden                      " Hide buffers instead of closing them
set laststatus=2                " Always display the status line
set nofoldenable                " Disable folding
set lazyredraw                  " Use lazy redrawing
set noshowmode                  " Don't show mode
set number                      " Show line numbers
set ruler                       " Show ruler
set showcmd                     " Show current command
set showmatch                   " Show matching bracket/parenthesis/etc
set showmode                    " Show current mode
set tags=tags;                  " Find tags recursively
set title                       " Change terminal title
set ttyfast                     " Fast terminal
set wildmenu                    " Visual autocomplete for command menu
set clipboard^=unnamed,unnamedplus
set rulerformat=%30(%=\:b%n%y%m%r%w\ %l,%c%V\ %P%)

" Temp Files
set nobackup                    " No backup file
set noswapfile                  " No swap file

" Search
set incsearch                   " Incremental search
set hlsearch                    " Highlight matches
set ignorecase                  " Case-insensitive search...
set smartcase                   " ...unless search contains uppercase letter

" Indentation
set smarttab                    " Better tabs
set smartindent                 " Insert new level of indentation
set autoindent                  " Copy indentation from previous line
set tabstop=2                   " Columns a tab counts for
set softtabstop=2               " Columns a tab inserts in insert mode
set shiftwidth=2                " Columns inserted with the reindent operations
set shiftround                  " Always indent by multiple of shiftwidth
set expandtab                   " Always use spaces instead of tabs

" Key sequence timeout
set ttimeout                    " Enable time out
set ttimeoutlen=0               " Disable key code delay

" Wrapping
set nowrap                      " Don't wrap long lines
set linebreak                   " When wrapping, only at certain characters
set textwidth=0                 " Turn off physical line wrapping
set wrapmargin=0                " Turn off physical line wrapping

" Joining
set nojoinspaces                " Only one space when joining lines
set formatoptions+=j            " Remove comment leader when joining lines

" Scroll
set sidescrolloff=3             " Keep at least 3 lines left/right
set scrolloff=3                 " Keep at least 3 lines above/below

" Mouse
set mousehide                   " Hide mouse when typing
set mouse=nicr                  " Disable mouse

" Disable bell
set visualbell                  " Disable visual bell
set noerrorbells                " Disable error bell

" Treat given characters as a word boundary
set iskeyword-=.                " Make '.' end of word designator
set iskeyword-=#                " Make '#' end of word designator

" Splits
set splitbelow                  " Horizontal split below
set splitright                  " Vertical split right

" Spell checking
set spelllang=en_us             " English as default language
set spell                       " Enable by default

" Invisible characters
set nolist
set listchars=eol:¬,tab:▶\ ,trail:~,extends:⟩,precedes:⟨,nbsp:␣
set showbreak=↳\ \ \ "

" Make completion menu behave like an IDE
set completeopt=longest,menuone,preview

" Don't give ins-completion-menu messages
set shortmess+=c

" Disable modelines as a security precaution
set modelines=0
set nomodeline

" Encryption
if has("crypt-blowfish2")
    set cm=blowfish2
endif

if !has('nvim')
    set pastetoggle=<F2>        " Toggle paste mode with F2
endif

" History
set history=1000                " Remember more commands
if has("persistent_undo")
    set undofile                " Persistent undo
    set undodir=~/.vim/undo     " Location to store undo history
    set undolevels=1000         " Max number of changes
    set undoreload=10000        " Max lines to save for undo on a buffer reload
endif

" ---------------------------------------------------------------------------- "
" Colors & User Interface                                                      "
" ---------------------------------------------------------------------------- "

" Custom spell-checking highlighting
highlight SpellBad     cterm=underline  term=underline  gui=underline
highlight SpellCap     cterm=underline  term=underline  gui=underline
highlight SpellRare    cterm=underline  term=underline  gui=underline
highlight SpellLocal   cterm=underline  term=underline  gui=underline

" Italics for comments
highlight Comment      cterm=italic     term=italic     gui=italic

" ---------------------------------------------------------------------------- "
" Key Mappings                                                                 "
" ---------------------------------------------------------------------------- "

" Typos
cnoreabbrev E e
cnoreabbrev Q q
cnoreabbrev Qa qa
cnoreabbrev W w

" Save file which you forgot to open with sudo
cnoremap w!! w !sudo tee % >/dev/null

" Wrap the current visual selection
vnoremap Q gq

" Wrap the current paragraph
nnoremap Q gqap

" Search for current visual selection
vnoremap // y/\V<C-R>"<CR>

" Move between open buffers
nnoremap <C-n> :bnext<CR>
nnoremap <C-p> :bprev<CR>

" Redraw the screen and remove highlighting
nnoremap <silent> <C-l> :nohl<CR><C-l>

" ---------------------------------------------------------------------------- "
" Leader Mappings                                                              "
" ---------------------------------------------------------------------------- "

let mapleader=" "

" Clear search highlight
nnoremap <leader><space> :noh<CR>

" Yank
nnoremap <leader>yp :let @+=expand("%:p")<CR>
nnoremap <leader>yl :let @+=expand('%:t') . ':' . line(".")<CR>
nnoremap <leader>yc :let @+=expand('%:t') . ':' . line( "."). ':' . col(".")<CR>

" Toggle
nnoremap <leader>ts :setlocal spell!<CR>
nnoremap <leader>tl :set list!<CR>
nnoremap <leader>tw :call ToggleRemoveTrailingWhitespace()<CR>

" Buffers
nnoremap <leader>bd :bdelete<CR>
nnoremap <leader>bf :bfirst<CR>
nnoremap <leader>bl :blast<CR>
nnoremap <leader>bn :bnext<CR>
nnoremap <leader>bp :bprevious<CR>

" Windows
nnoremap <leader>wd <C-w>c
nnoremap <leader>wo <C-w>o

" ---------------------------------------------------------------------------- "
" Functions                                                                    "
" ---------------------------------------------------------------------------- "

function! ToggleRemoveTrailingWhitespace()
  if exists("g:dont_remove_trailing_whitespace")
    unlet g:dont_remove_trailing_whitespace
    echo "Enabled removing trailing whitespace"
  else
    let g:dont_remove_trailing_whitespace=1
    echo "Disabled removing trailing whitespace"
  endif
endfunction

function! RemoveTrailingWhitespace()
  if !exists("g:dont_remove_trailing_whitespace")
    %s/\s\+$//e
  endif
endfunction

" ---------------------------------------------------------------------------- "
" Auto Commands                                                                "
" ---------------------------------------------------------------------------- "

" Extension specific commands
augroup extensions
    autocmd!
    autocmd BufNewFile,BufRead *.mm setlocal filetype=objcpp
augroup end

" Filetype specific commands
augroup filtypes
    autocmd!
    autocmd FileType c,cpp setlocal comments^=:///
    autocmd FileType c,cpp setlocal commentstring=///\ %s
    autocmd FileType crontab setlocal nobackup nowritebackup
    autocmd FileType make setlocal noexpandtab
    autocmd FileType python setlocal tabstop=4 softtabstop=4 shiftwidth=4
augroup end

" Remove trailing whitespace
augroup remove_trailing_whitespace
    autocmd!
    autocmd BufWritePre * :call RemoveTrailingWhitespace()
augroup end

" Make the sign column transparent
augroup transparent_signs
    autocmd!
    autocmd ColorScheme * highlight SignColumn     guibg=NONE
    autocmd ColorScheme * highlight GitSignsAdd    guibg=NONE
    autocmd ColorScheme * highlight GitSignsChange guibg=NONE
    autocmd ColorScheme * highlight GitSignsDelete guibg=NONE
augroup end

" Watch my .vimrc
augroup reload_vimrc
    autocmd!
    autocmd BufWritePost $MYVIMRC source $MYVIMRC
augroup end

" ---------------------------------------------------------------------------- "
" Plugin Configuration                                                         "
" ---------------------------------------------------------------------------- "

" vim-bbye
nnoremap <silent> <leader>bd :Bdelete!<CR>

" fzf.vim
let g:fzf_buffers_jump=1
nnoremap \ :Rg<SPACE>
nnoremap \| :Tags<SPACE>
vnoremap _ y :Rg <C-R>"<CR>
nnoremap _ yaw :Rg <C-R>"<CR>
nnoremap <silent> <C-f> :Files<CR>
nnoremap <silent> <C-b> :Buffers<CR>

" vim-lightline
if !has('nvim')
    let g:lightline = {
        \ 'colorscheme': 'solarized',
        \ }
endif

" doxygentoolkit.vim
let g:DoxygenToolkit_commentType="C++"