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path: root/.config/nvim/init.lua
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---@diagnostic disable: undefined-global
vim.o.termguicolors = true
vim.o.relativenumber = true
vim.o.number = true
vim.o.signcolumn = "no"
vim.o.cc = "80"
vim.o.splitright = true
vim.o.splitbelow = true
vim.o.ignorecase = true
vim.o.winborder = "single"

vim.o.mouse = ""
vim.o.guicursor = "n-c-sm-ve:block-Cursor,i-ci:block-Cursor_i,v:block-Cursor_v"

vim.o.listchars = "tab:> ,trail:."
vim.o.list = true

vim.o.tabstop = 8
vim.o.shiftwidth = 8
vim.o.expandtab = true

vim.o.undofile = true
vim.o.backup = false
vim.o.writebackup = false
vim.o.swapfile = false

vim.opt.cinoptions:append(":0,N-s,E-s,(s,Ws")

vim.g.mapleader = " "
vim.g.netrw_banner = 0

-- I know ftplugin exists, but I don't wanna use it
local lang_conf = {
  lua = {
    tabstop = 2,
    shiftwidth = 2,
  }
}

for lang, conf in pairs(lang_conf) do
  vim.api.nvim_create_autocmd("FileType", {
    pattern = lang,
    callback = function()
      for k, v in pairs(conf) do
        vim.o[k] = v
      end
    end,
  })
end

vim.pack.add({
  "https://github.com/neovim/nvim-lspconfig",
  "https://github.com/stevearc/oil.nvim",
  {src="https://github.com/nvim-treesitter/nvim-treesitter", version="main"},
  "https://github.com/nvim-mini/mini.pick",
  "https://github.com/nvim-mini/mini.pairs",
  "https://github.com/nvim-mini/mini.cmdline",
  "https://github.com/tpope/vim-fugitive",
})

for _, plugin in ipairs(vim.pack.get()) do
  if not plugin.active then
    vim.pack.del({plugin.path:match(".*/(.*)$")})
  end
end

require("mini.pairs").setup()
require("mini.cmdline").setup()
require("mini.pick").setup({
  window = {
    config = {
      border = "single"
    },
  },
})

require("oil").setup({
  view_options = {show_hidden=true},
})

require("nvim-treesitter").install({"c", "cpp", "lua", "vim", "vimdoc"})
require("nvim-treesitter").setup()

vim.keymap.set("t", "<esc><esc>", "<C-\\><C-n>")
vim.keymap.set("n", "<leader>f", ":Pick files tool='rg'<CR>")
vim.keymap.set("v", "p", '"_dP', opts)

-- Switch between semantically related files easily :)
local exts = {{"c", "h"}, {"cc", "hh"}, {"cpp", "hpp"}, {"frag", "vert"}}
vim.keymap.set("n", "<leader>s", function()
  local bufpath = vim.api.nvim_buf_get_name(0)
  for _, pair in ipairs(exts) do
    for i, ext in ipairs(pair) do
      if bufpath:match("%." .. ext .. "$") then
        local other = pair[i % #pair + 1]
        vim.cmd("e " .. bufpath:gsub("%." .. ext .. "$", "." .. other))
        return
      end
    end
  end
  print("no files to swap to")
end)

vim.lsp.enable({"lua_ls", "clangd"})
vim.diagnostic.config({
  virtual_text = true,
  severity_sort = true,
})
vim.api.nvim_create_autocmd("LspAttach", {
  callback = function(ev)
    local opts = {silent=true, buffer=ev.buf}
    vim.keymap.set("n", "gD", function() vim.lsp.buf.declaration() end, opts)
    vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
    local client = vim.lsp.get_client_by_id(ev.data.client_id)
    local chars = {}
    for i = 32, 126 do
      table.insert(chars, string.char(i))
    end
    if client:supports_method("textDocument/completion") then
      client.server_capabilities.completionProvider.triggerCharacters = chars
      vim.lsp.completion.enable(true, client.id, ev.buf, {autotrigger=true})
    end
  end,
})

vim.cmd.colorscheme("lunaperche")
vim.api.nvim_set_hl(0, "CursorLine", {bg="#101010"})
vim.api.nvim_set_hl(0, "Cursor_i", {bg="#00FFFF"})
vim.api.nvim_set_hl(0, "Cursor_v", {bg="#FF00FF"})

vim.api.nvim_create_user_command("Ex", "Oil", {})