feat: add LF integration to Neovim

- Add is0n/tui-nvim plugin
- Add lua code to integrate LF to Neovim.

README.md

@@ -1,3 +1,3 @@
 # neovim-config
 
-Neovim configuration for neovim version 0.7.0+.
+Neovim configuration for neovim version 0.8.0+.

neovim/lua/config/tui_nvim.lua

@@ -0,0 +1,35 @@
+local ok, tui_nvim = pcall(require, "tui-nvim")
+
+if not ok then
+  return
+end
+
+tui_nvim.setup{}
+
+local lf = function(method)
+  local lf_cmd = vim.env.GOBIN .. "/lf"
+  local tempfile = vim.fn.stdpath("cache") .. "/tui-nvim"
+
+  tui_nvim:new {
+    cmd    = lf_cmd .. " -selection-path " .. tempfile .. " " .. vim.env.PWD,
+    temp   = tempfile,
+    method = method,
+  }
+end
+
+local LfEdit = function()
+  lf("edit")
+end
+
+local LfSplit = function()
+  lf("split")
+end
+
+local LfVsplit = function()
+  lf("vsplit")
+end
+
+vim.api.nvim_create_user_command( 'LfEdit', LfEdit, {} )
+vim.api.nvim_create_user_command( 'LfSplit', LfSplit, {} )
+vim.api.nvim_create_user_command( 'LfVsplit', LfVsplit, {} )
+

neovim/lua/keymappings.lua

@@ -70,3 +70,8 @@ vim.keymap.set("i", "<C-SPACE>", "<C-x><C-o>", { noremap = true })
 -- Bufferline
 vim.keymap.set("n", "<leader>bn", ":BufferLineCycleNext<CR>", { noremap = true})
 vim.keymap.set("n", "<leader>bp", ":BufferLineCyclePrev<CR>", { noremap = true})
+
+-- LF
+vim.keymap.set("n", "<leader>ll", ":LfEdit<CR>", { noremap = true})
+vim.keymap.set("n", "<leader>ls", ":LfSplit<CR>", { noremap = true})
+vim.keymap.set("n", "<leader>lv", ":LfVsplit<CR>", { noremap = true})

neovim/lua/plugins.lua

@@ -36,4 +36,10 @@ return require("packer").startup(function(use)
     config   = require("config.bufferline"),
   }
 
+  use {
+    "is0n/tui-nvim",
+    commit = "2eeff3ac921f53bdb837d23d6e4501d97807994c",  -- 2022.05.07
+    config = require("config.tui_nvim"),
+  }
+
 end)