add lua

1 files changed, 138 insertions, 0 deletions

diff --git a/mut/neovim/lua/my/packages/cmp.lua b/mut/neovim/lua/my/packages/cmp.lua
new file mode 100644
index 0000000..6a22d73
--- /dev/null
+++ b/mut/neovim/lua/my/packages/cmp.lua
@@ -0,0 +1,138 @@
+local cmp = require("cmp")
+local cmp_types = require("cmp.types")
+local luasnip = require("luasnip")
+
+vim.keymap.set("n", "<leader>xf",
+  function()
+    local fname = vim.fn.fnamemodify(vim.fn.bufname(vim.api.nvim_get_current_buf()), ":p:h")
+    vim.api.nvim_feedkeys(":e " .. fname, "c", false)
+    vim.defer_fn(function()
+      vim.api.nvim_feedkeys("/", "c", false)
+    end, 10)
+  end)
+
+function snip(args)
+  luasnip.lsp_expand(args.body)
+end
+
+function has_words_before()
+  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+  local word = unpack(vim.api.nvim_buf_get_lines(0, line-1, line, true))
+  local before = word:sub(col, col)
+  local is_string = before:match("%s")
+  return (not (col == 0)) and is_string
+end
+
+function in_edit_mode(line)
+  return line:match("^.* %.?.*$") or line:match("^ed?i?t? .*$")
+end
+
+function endswith(line, char)
+  return line:match(".*" .. char .. "$")
+end
+
+function replace_tail(line)
+  local result, n = line:gsub("(.*/)[^/]*/$","%1")
+  if n then
+    return result
+  else
+    return line
+  end
+end
+
+cmp.setup({
+  experimental={ghost_text= true},
+  snippet={expand="snip"},
+  preselect=cmp.PreselectMode.None,
+  sources=cmp.config.sources({
+    {name= "nvim_lsp"},
+    {name= "path"},
+    {name= "luasnip"}
+  }),
+  mapping={
+    ["<Tab>"]=cmp.mapping(
+      function(fallback)
+        if cmp.visible() then
+          cmp.select_next_item()
+        elseif luasnip.expand_or_jumpable() then
+          luasnip.expand_or_jump()
+        elseif has_words_before() then
+          cmp.complete()
+        else
+          fallback()
+        end
+      end, {"i", "s"}),
+    ["<S-Tab>"]=cmp.mapping(
+      function(fallback)
+        if cmp.visible() then
+          cmp.select_prev_item()
+        elseif luasnip.jumpable(-1) then
+          luasnip.jump (1)
+        else
+          fallback()
+        end
+      end, { "i", "s" }),
+    ["<C-b>"]=cmp.mapping.scroll_docs(-4),
+    [ "<C-f>" ]= cmp.mapping.scroll_docs(4),
+    [ "<C-j>" ]= cmp.mapping.complete(),
+    [ "<CR>" ]= cmp.mapping.confirm({
+      behavior=cmp.ConfirmBehavior.Insert,
+      select=true}),
+    },
+})
+
+-- This tries to emulate somewhat ido mode to find files
+-- todo sorting based on least recently used
+cmp.setup.cmdline(":",
+{enabled=function()
+  local val = in_edit_mode(vim.fn.getcmdline())
+  if not val then cmp.close() end
+  return val
+end,
+sources=cmp.config.sources({ {name="path"} }),
+completion={completeopt="menu,menuone,noinsert"},
+mapping={
+  ["<C-n>"]=cmp.mapping(
+    function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      else
+        cmp.complete()
+      end
+    end, { "i", "c" }),
+  ["<C-p>"]=cmp.mapping(
+    function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      else
+        cmp.complete()
+      end
+    end, { "i", "c" }),
+  ["<BS>"]=cmp.mapping(
+    function(fallback)
+      local line = vim.fn.getcmdline()
+      if not endswith(line, "/") then
+        fallback()
+      else
+        vim.fn.setcmdline(replace_tail(line))
+        vim.fn.feedkeys(vim.api.nvim_replace_termcodes("<C-g><BS>", true, false, true), false)
+        vim.defer_fn(cmp.complete, 10)
+      end
+    end, { "i", "c" }),
+  ["<CR>"]=cmp.mapping(
+    function(fallback)
+      local entry = cmp.get_selected_entry()
+      local line = vim.fn.getcmdline()
+      if entry and (not in_edit_mode(line)) then
+        vim.schedule(fallback)
+      else
+        cmp.confirm {select=true, behavior=cmp.ConfirmBehavior.Replace}
+        if entry and entry.completion_item.label:match("%.*/$") then
+          vim.defer_fn(cmp.complete, 10)
+        else
+          vim.schedule(fallback)
+        end
+      end
+    end, { "i", "c"})
+  }
+})