add alternative formatter & linter conform and nvim-lint

lua/plugins/conform.lua

@@ -0,0 +1,93 @@
+return {
+  "stevearc/conform.nvim",
+  enabled = pcode.disable_null_ls or false,
+  event = { "BufReadPre", "BufNewFile" },
+  opts = function()
+    local mason_reg = require("mason-registry")
+
+    local formatters = {}
+    local formatters_by_ft = {}
+
+    -- add diff langue vs filetype
+    local keymap = {
+      ["c++"] = "cpp",
+      ["c#"] = "cs",
+    }
+
+    -- add dif conform vs mason
+    local name_map = {
+      ["cmakelang"] = "cmake_format",
+      ["deno"] = "deno_fmt",
+      ["elm-format"] = "elm_format",
+      ["gdtoolkit"] = "gdformat",
+      ["nixpkgs-fmt"] = "nixpkgs_fmt",
+      ["opa"] = "opa_fmt",
+      ["php-cs-fixer"] = "php_cs_fixer",
+      ["ruff"] = "ruff_format",
+      ["sql-formatter"] = "sql_formatter",
+      ["xmlformatter"] = "xmlformat",
+    }
+
+    for _, pkg in pairs(mason_reg.get_installed_packages()) do
+      for _, type in pairs(pkg.spec.categories) do
+        -- only act upon a formatter
+        if type == "Formatter" then
+          -- if formatter doesn't have a builtin config, create our own from a generic template
+          if not require("conform").get_formatter_config(pkg.spec.name) then
+            -- the key of the entry to this table
+            -- is the name of the bare executable
+            -- the actual value may not be the absolute path
+            -- in some cases
+            local bin = next(pkg.spec.bin)
+            -- this should be replaced by a function
+            -- that quieries the configured mason install path
+            local prefix = vim.fn.stdpath("data") .. "/mason/bin/"
+
+            formatters[pkg.spec.name] = {
+              command = prefix .. bin,
+              args = { "$FILENAME" },
+              stdin = true,
+              require_cwd = false,
+            }
+          end
+
+          -- finally add the formatter to it's compatible filetype(s)
+          for _, ft in pairs(pkg.spec.languages) do
+            local ftl = string.lower(ft)
+            local ready = mason_reg.get_package(pkg.spec.name):is_installed()
+            if ready then
+              if keymap[ftl] ~= nil then
+                ftl = keymap[ftl]
+              end
+              if name_map[pkg.spec.name] ~= nil then
+                pkg.spec.name = name_map[pkg.spec.name]
+              end
+              formatters_by_ft[ftl] = formatters_by_ft[ftl] or {}
+              table.insert(formatters_by_ft[ftl], pkg.spec.name)
+            end
+          end
+        end
+      end
+    end
+
+    return {
+      format_on_save = {
+        lsp_fallback = true,
+        timeout_ms = pcode.format_timeout_ms or 5000,
+      },
+      formatters = formatters,
+      formatters_by_ft = formatters_by_ft,
+    }
+  end,
+  config = function(_, opts)
+    local conform = require("conform")
+    conform.setup(opts)
+    vim.keymap.set({ "n", "v" }, "<leader>lF", function()
+      conform.format({
+        lsp_fallback = true,
+        async = false,
+        timeout_ms = pcode.format_timeout_ms or 5000,
+      })
+    end, { desc = "Format file or range (in visual mode)" })
+  end,
+}