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path: root/.config/nvim/init.lua
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---@diagnostic disable: undefined-global

local ns = vim.api.nvim_create_namespace("mine")

vim.o.termguicolors = true
vim.o.relativenumber = true
vim.o.number = true
vim.o.cc = "80"
vim.o.swapfile = false
vim.o.splitright = true
vim.o.splitbelow = true
vim.o.winborder = "bold"
vim.o.signcolumn = "yes"
vim.o.guicursor =
"n-v:block,i-c:ver25,r-cr:hor100,i-r-c:blinkon100,i-r-c:blinkoff100,n-v:blinkon0"
vim.o.tabstop = 2
vim.o.shiftwidth = 0
vim.o.expandtab = true
vim.o.completeopt = "menu,menuone,noselect"

vim.g.mapleader = " "

vim.pack.add({
  {src="https://github.com/ibhagwan/fzf-lua"},
  {src="https://github.com/williamboman/mason.nvim"},
  {src="https://github.com/neovim/nvim-lspconfig"},
  {src="https://github.com/nvim-treesitter/nvim-treesitter"},
})

require("mason").setup({})
require("fzf-lua").setup(require("fzf-lua.profiles.telescope"))
require("nvim-treesitter.configs").setup(
  {ensure_installed = {"lua", "c"},
  highlight = {enable=true}
})

-- Switch between semantically related files easily :)
local exts = {{"c", "h"}, {"cc", "hh"}, {"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.keymap.set("n", "<leader>e", ":Ex<CR>", {})
-- I'm constantly hitting this and I hate it 
vim.keymap.set("n", "<C-z>", "<Nop>", {})
vim.keymap.set("n", "<C-p>", function() FzfLua.files({}) end, {})
vim.keymap.set("n", "<C-f>", function() FzfLua.grep() end, {})
vim.keymap.set("n", "gf", ":vert wincmd f<CR>", {silent=true})
vim.keymap.set("n", "<leader>b", ":ToScratch<CR>", {silent=true})

-- open up the current buffer in a scratch buffer
vim.api.nvim_create_user_command("ToScratch", function()
  local linec = vim.api.nvim_buf_line_count(0)
  local lines = vim.api.nvim_buf_get_lines(0, 0, linec, false)
  local buf = vim.api.nvim_create_buf(false, true)
  vim.api.nvim_set_option_value(
    "filetype", vim.api.nvim_get_option_value("filetype", {buf=0}), {buf=buf})
  vim.api.nvim_buf_set_lines(buf, 0, linec, false, lines)
  vim.api.nvim_open_win(buf, false, {split="below", win=0})
end, {nargs=0})

vim.lsp.enable({"lua_ls", "clangd"})
vim.api.nvim_create_autocmd("LspAttach", {
  callback = function(ev)
    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
    client.server_capabilities.completionProvider.triggerCharacters = chars
    if client:supports_method("textDocument/completion") then
      vim.lsp.completion.enable(true, client.id, ev.buf, {autotrigger=true})
    end
  end,
})
vim.diagnostic.config({virtual_text=true, severity_sort=true})

vim.cmd.colorscheme("mine")
vim.api.nvim_set_hl(0, "Normal", {bg="none"})