add snippet for all ft

Author: TwIStOy

README.md

@@ -30,24 +30,38 @@ ls.setup({
 
 Snippets which trigger ends with "!" are `autosnippet`.
 
+<details>
+<summary>All</summary>
+
+#### Normal Snippets
+
+|  Trig   | Desc                               |
+| :-----: | ---------------------------------- |
+| `todo`  | Expand to linewise `TODO` comment  |
+| `fixme` | Expand to linewise `FIXME` comment |
+| `note`  | Expand to linewise `NOTE` comment  |
+
+</details>
+
 <details>
 <summary>Cpp</summary>
 
 #### Normal Snippets
 
-| Trig       | Desc                                                                                             | Context Required |
-| :--------: | ------------------------------------------------------------------------------------------------ | :--------------: |
-| `ctor!`    | Expand to default constructor                                                                    | In Class         |
-| `dtor!`    | Expand to default destructor                                                                     | In Class         |
-| `cc!`      | Expand to default copy constructor                                                               | In Class         |
-| `mv!`      | Expand to default move constructor                                                               | In Class         |
-| `ncc!`     | Expand to delete copy constructor                                                                | In Class         |
-| `nmv!`     | Expand to delete move constructor                                                                | In Class         |
-| `ncm!`     | Expand to delete copy and move constructor                                                       | In Class         |
-| `fn`       | Expand to lambda function in argument list or function body, otherwise expand to normal function | No               |
-| `\|trans`  | Expand to ranges::views::transform pipe.                                                         | No               |
-| `\|filter` | Expand to ranges::views::filter pipe.                                                            | No               |
-| `cpo`      | Expand to customize point object.                                                                | No               |
+|    Trig    | Desc                                                                                             |       Context Required        |
+| :--------: | ------------------------------------------------------------------------------------------------ | :---------------------------: |
+|  `ctor!`   | Expand to default constructor                                                                    |           In Class            |
+|  `dtor!`   | Expand to default destructor                                                                     |           In Class            |
+|   `cc!`    | Expand to default copy constructor                                                               |           In Class            |
+|   `mv!`    | Expand to default move constructor                                                               |           In Class            |
+|   `ncc!`   | Expand to delete copy constructor                                                                |           In Class            |
+|   `nmv!`   | Expand to delete move constructor                                                                |           In Class            |
+|   `ncm!`   | Expand to delete copy and move constructor                                                       |           In Class            |
+|    `fn`    | Expand to lambda function in argument list or function body, otherwise expand to normal function |              No               |
+| `\|trans`  | Expand to ranges::views::transform pipe.                                                         |              No               |
+| `\|filter` | Expand to ranges::views::filter pipe.                                                            |              No               |
+|   `cpo`    | Expand to customize point object.                                                                |              No               |
+|   `once`   | Expand to `pragma once` marker at the front of the file.                                         | All lines before are comments |
 
 #### Postfix Snippets
 

lua/luasnip-snippets/config.lua

@@ -0,0 +1,35 @@
+---@class LSSnippets.Config.User
+---@field name? string
+---@field email? string
+
+---@class LSSnippets.Config
+---@field copyright_header? string
+---@field user? LSSnippets.Config.User
+local config = {}
+
+---@param opts? LSSnippets.Config
+local function setup(opts)
+  opts = opts or {}
+  config = vim.tbl_extend("force", config, opts)
+end
+
+---@return any
+local function get(key)
+  local keys = vim.split(key, ".", {
+    plain = true,
+    trimempty = true,
+  })
+  local value = config
+  for _, k in ipairs(keys) do
+    value = value[k]
+    if value == nil then
+      return nil
+    end
+  end
+  return value
+end
+
+return {
+  setup = setup,
+  get = get,
+}

lua/luasnip-snippets/init.lua

@@ -37,11 +37,16 @@ local function load_and_add_snippet(fts)
   end
 end
 
-function M.setup()
+---@param opts? LSSnippets.Config
+function M.setup(opts)
+  local Config = require("luasnip-snippets.config")
+  Config.setup(opts)
+
   -- register snippets
   load_and_add_snippet {
     "cpp",
     "rust",
+    "all",
   }
 end
 

lua/luasnip-snippets/snippets/all.lua

@@ -0,0 +1,42 @@
+---@param keyword string
+local todo_comment = function(keyword)
+  local ls = require("luasnip")
+  local f = ls.function_node
+  local snippet = require("luasnip-snippets.nodes").construct_snippet
+  local Config = require("luasnip-snippets.config")
+
+  return snippet {
+    keyword,
+    mode = "bw",
+    nodes = {
+      f(function()
+        local CommentFt = require("luasnip-snippets.utils.comment")
+        local ft = vim.api.nvim_get_option_value("filetype", {
+          buf = 0,
+        })
+        local pattern = CommentFt.get(ft, 1)
+        local name = Config.get("user.name")
+        if pattern == nil then
+          -- keep the input
+          pattern = "%s"
+        end
+        if type(pattern) == "table" then
+          pattern = pattern[1]
+        end
+        local marker
+        if name == nil then
+          marker = (" %s: "):format(keyword:upper())
+        else
+          marker = (" %s(%s): "):format(keyword:upper(), name)
+        end
+        return pattern:format(marker)
+      end, {}),
+    },
+  }
+end
+
+return {
+  todo_comment("todo"),
+  todo_comment("fixme"),
+  todo_comment("note"),
+}

lua/luasnip-snippets/snippets/cpp/default.lua

@@ -5,6 +5,7 @@ local c = require("luasnip-snippets.nodes").choice_node
 local fmta = require("luasnip.extras.fmt").fmta
 local f = ls.function_node
 local t = ls.text_node
+local CommonCond = require("luasnip-snippets.utils.common_cond")
 
 local function cpo_snippet()
   local function cpo_func_to_namespace(name)
@@ -71,9 +72,27 @@ local function ranges_views_snippet(trig, func)
   }
 end
 
+local all_lines_before_are_all_comments =
+  CommonCond.generate_all_lines_before_match_cond {
+    "^%s*//.*$",
+    "^%s*$",
+  }
+
 return {
   cpo_snippet,
 
   ranges_views_snippet("|trans", "transform"),
   ranges_views_snippet("|filter", "filter"),
+
+  -- progma once
+  snippet {
+    "once",
+    name = "(once) #Progma once",
+    dscr = "Expands to progma once with comments",
+    mode = "bwA",
+    cond = all_lines_before_are_all_comments,
+    nodes = {
+      t { "#pragma once  // NOLINT(build/header_guard)", "" },
+    },
+  },
 }