Biohazard/dots/vimrc

" ---
" JJGadgets Vim Configuration - Vim Compatibility
" ---
" Simple text editing configuration for Vim, only core configs like syntax
" highlighting and indents
" All plugins and stuff are handled by Neovim whose init.lua will source .vimrc
" ---
" CREDITS:
"   https://github.com/amix/vimrc - Basic Config
"

" nocompatible, placed first so all others below follow this
set nocompatible

" set vim tmp files (https://stackoverflow.com/a/61585014)
if has('win32')
    set noundofile
    set nobackup
    set noswapfile
    set undodir=
    set backupdir=
    set directory=
elseif has('mac') || has('unix')
    set undofile
    set undolevels=1000         " How many undos
    set undoreload=10000        " number of lines to save for undo
    
    set backup                        " enable backups
    set swapfile                      " enable swaps
    
    set undodir=/tmp/.vim/tmp/undo"     " undo files
    set backupdir=/tmp/.vim/tmp/backup " backups
    set directory=/tmp/.vim/tmp/swap   " swap files
endif

" Make those folders automatically if they don't already exist.
if !isdirectory(expand(&undodir))
    call mkdir(expand(&undodir), "p")
endif
if !isdirectory(expand(&backupdir))
    call mkdir(expand(&backupdir), "p")
endif
if !isdirectory(expand(&directory))
    call mkdir(expand(&directory), "p")
endif

" set yank to: remember last 100 files' marks, yank across files if <10k lines
" and <5MB, and disable search highlighting on startup
set viminfo='100,<10000,s5000,h

" 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
au FocusGained,BufEnter * silent! checktime

" With a map leader it's possible to do extra key combinations
" let mapleader = " "
map <SPACE> <Leader>
map "," <LocalLeader>

" Fast saving
nmap <SPACE><SPACE> :w<cr>

" Fast quitting
nmap <SPACE>q<SPACE> :q<cr>

" :ww mkdirs the file dir
let cwdmkdir=fnamemodify(expand('<afile>'), ':h')
let cwfmkdir=expand('<afile>')
let mkdircommand="mkdir -p '" . cwdmkdir . "'" " TODO: cleanup
" command! ww call mkdir(cwdmkdir, 'p') execute 'w'
command! W call system(mkdircommand) execute 'w'
" command! WW # TODO: setup sudo mkdir then sudo write
" :W sudo saves the file
" (useful for handling the permission-denied error)
command! WS execute 'w !sudo tee % > /dev/null' <bar> edit!

" open file
nmap <leader>ff :Explore<cr>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => VIM user interface
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" 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
set wildmode=longest:list,full

" Ignore compiled files
set wildignore=*.o,*~,*.pyc
if has("win16") || has("win32")
    set wildignore+=.git\*,.hg\*,.svn\*
else
    set wildignore+=*/.git/*,*/.hg/*,*/.svn/*,*/.DS_Store
endif

" Always show current position
set ruler

" Height of the command bar
set cmdheight=1

" 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)
if !has('nvim')
  set lazyredraw
endif

" 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

" Properly disable sound on errors on MacVim
if has("gui_macvim")
    autocmd GUIEnter * set vb t_vb=
endif

" " Add a bit extra margin to the left
" set foldcolumn=1


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Colors and Fonts
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Enable line numbers
set number relativenumber

" Enable syntax highlighting
syntax enable

" Set regular expression engine automatically
set regexpengine=0

" Enable 256 colors palette in Gnome Terminal
if $COLORTERM == 'gnome-terminal'
    set t_Co=256
endif

" Set colorscheme based on availability, from Neovim-only, to Vim custom/plugin, to Vim preinstalled
try
    colorscheme tokyonight
    catch
    try
        colorscheme dracula
        catch
        try
            colorscheme slate
            catch
        endtry
    endtry
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=%M\ %t
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


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Files, backups and undo
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off, since most stuff is in SVN, git etc. anyway...
set nobackup
set nowb
set noswapfile


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Text, tab and indent related
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=2
set tabstop=2

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

" Fix auto-indentation for YAML files
autocmd FileType yaml,yml setlocal ts=2 sts=2 sw=2 expandtab indentkeys-=0# indentkeys-=<:>

""""""""""""""""""""""""""""""
" => Visual mode related
""""""""""""""""""""""""""""""
" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :<C-u>call VisualSelection('', '')<CR>/<C-R>=@/<CR><CR>
vnoremap <silent> # :<C-u>call VisualSelection('', '')<CR>?<C-R>=@/<CR><CR>


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Moving around, tabs, windows and buffers
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Smart way to move between windows
nmap <leader>w<Left> <C-W><Left>
nmap <leader>w<Down> <C-W><Down>
nmap <leader>w<Up> <C-W><Up>
nmap <leader>w<Right> <C-W><Right>

" Close the current buffer
map <leader>bd :Bclose<cr>:tabclose<cr>gT

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

map <leader>b<Right> :bnext<cr>
map <leader>b<Left> :bprevious<cr>

" Useful mappings for managing tabs
map <C-t> :tabnew<cr>
map <leader>tn :tabnew<cr>
map <leader>to :tabonly<cr>
map <leader>tc :tabclose<cr>
map <leader>tm :tabmove
map <leader>t<leader> :tabnext<cr>

" 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>tt :tabedit <C-r>=escape(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!)
au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif


""""""""""""""""""""""""""""""
" => Status line
""""""""""""""""""""""""""""""
" Always show the status line
set laststatus=2

" Format the status line
""if !has('nvim')
if ! empty(globpath(&rtp, 'lazy/lualine.nvim/lua/lualine.lua'))
  set statusline=\ %{HasPaste()}%F%m%r%h\ %w\ \ CWD:\ %r%{getcwd()}%h\ \ \ L:%l,C:%c
endif


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Editing mappings
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

" Delete trailing white space on save, useful for some filetypes ;)
fun! CleanExtraSpaces()
    let save_cursor = getpos(".")
    let old_query = getreg('/')
    silent! %s/\s\+$//e
    call setpos('.', save_cursor)
    call setreg('/', old_query)
endfun

if has("autocmd")
    autocmd BufWritePre *.txt,*.js,*.py,*.wiki,*.sh,*.coffee,*.yaml :call CleanExtraSpaces()
endif

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Spell checking
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set nospell
" " 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=


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Misc
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" 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 markdown buffer for scribble
map <leader>x :e ~/buffer.md<cr>

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


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Helper functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" 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

function! CmdLine(str)
    call feedkeys(":" . a:str)
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 == 'gv'
        call CmdLine("Ack '" . l:pattern . "' " )
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    endif

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