nvim: Add json formatting, auto gather filetypes

Added json to be formatted by prettier like the other javascript-close
filetypes.

Switched the static list of filetypes to automatically format on save to
be replaced by automatically gathering all filetypes set up for
formatter.nvim since I want everything formatted anyway.

nvim/.config/nvim/lua/plug/_format.lua

@@ -2,22 +2,14 @@ local augroup = require('helpers.augroup')
 
 -- for each filetype autoformat on save
 -- TODO can automatically gather from formatter table keys?
-local filetypes =
-    'bash,cpp,go,html,javascript,lua,python,rust,sh,typescript,zsh'
-augroup({
-    {
-        'FileType', filetypes, 'autocmd', 'BufWritePost', '<buffer>',
-        'FormatWrite'
-    }
-}, 'formatonsave')
-
 local prettierfmt = {
     function()
+        local set_quotes = "--single-quote"
+        if vim.bo.filetype == "json" then set_quotes = "--double-quote" end
         return {
             exe = "prettier",
             args = {
-                "--stdin-filepath", vim.api.nvim_buf_get_name(0),
+                "--stdin-filepath", vim.api.nvim_buf_get_name(0), set_quotes
-                '--single-quote'
             },
             stdin = true
         }
@@ -27,44 +19,44 @@ local shfmt = {
     function() return {exe = "shfmt", args = {"-i 4"}, stdin = true} end
 }
 
-require('formatter').setup({
+local formatters = {
-    logging = false,
+    bash = shfmt,
-    filetype = {
+    cpp = {
-        bash = shfmt,
+        function()
-        cpp = {
+            return {
-            function()
+                exe = "clang-format",
-                return {
+                args = {},
-                    exe = "clang-format",
+                stdin = true,
-                    args = {},
+                cwd = vim.fn.expand('%:p:h') -- Run clang-format in cwd of the file.
-                    stdin = true,
+            }
-                    cwd = vim.fn.expand('%:p:h') -- Run clang-format in cwd of the file.
+        end
-                }
+    },
-            end
+    go = {function() return {exe = "goimports", stdin = true} end},
-        },
+    html = prettierfmt,
-        go = {function() return {exe = "goimports", stdin = true} end},
+    javascript = prettierfmt,
-        html = prettierfmt,
+    json = prettierfmt,
-        javascript = prettierfmt,
+    lua = {
-        lua = {
+        function()
-            function()
+            return
-                return {
+                {exe = "lua-format", args = {"--indent-width", 4}, stdin = true}
-                    exe = "lua-format",
+        end
-                    args = {"--indent-width", 4},
+    },
-                    stdin = true
+    python = {function() return {exe = "black", args = {"-"}, stdin = true} end},
-                }
+    rust = {
-            end
+        function()
-        },
+            return {exe = "rustfmt", args = {"--emit=stdout"}, stdin = true}
-        python = {
+        end
-            function()
+    },
-                return {exe = "black", args = {"-"}, stdin = true}
+    sh = shfmt,
-            end
+    typescript = prettierfmt,
-        },
+    zsh = shfmt
-        rust = {
+}
-            function()
+
-                return {exe = "rustfmt", args = {"--emit=stdout"}, stdin = true}
+require('formatter').setup({logging = false, filetype = formatters})
-            end
+
-        },
+-- gather filetypes to autocorrect for each activated formatter above
-        sh = shfmt,
+local filetype = ""
-        typescript = prettierfmt,
+for k, _ in pairs(formatters) do filetype = filetype .. "," .. k end
-        zsh = shfmt
+augroup({
-    }
+    {'FileType', filetype, 'autocmd', 'BufWritePost', '<buffer>', 'FormatWrite'}
-})
+}, 'formatonsave')