nvim-lint.lua

return {
	"mfussenegger/nvim-lint",
	cmd = function()
		BANNED_BUFFS = {};
		require("lint").linters_by_ft = {
			c = { "norminette" },
		}

		-- Error: VAR_DECL_START_FUNC  (line: 171, col:   1):      Variable declaration not at start of function
		local pattern = '(Error):%s+([%u_]+)%s+%(line:%s+(%d+),%scol:%s+(%d+)%):%s+(.*)';
		local groups = { 'severity', 'code', 'lnum', 'col', 'message' };
		local default_severity = {['Error'] = vim.diagnostic.severity.WARN};
		local parser = require('lint.parser').from_pattern(pattern, groups, default_severity, {}, {});

		require('lint').linters.norminette = {
			name = "norminette",
			cmd = 'norminette',
			stdin = false, -- or false if it doesn't support content input via stdin. In that case the filename is automatically added to the arguments.
			append_fname = true, -- Automatically append the file name to `args` if `stdin = false` (default: true)
			args = {}, -- list of arguments. Can contain functions with zero arguments that will be evaluated once the linter is used.
			stream = "both", -- ('stdout' | 'stderr' | 'both') configure the stream to which the linter outputs the linting result.
			ignore_exitcode = true, -- set this to true if the linter exits with a code != 0 and that's considered normal.
			env = nil, -- custom environment table to use with the external process. Note that this replaces the *entire* environment, it is not additive.
			parser = parser
		}
		vim.api.nvim_create_autocmd({ "BufWritePost" }, {
			callback = function()
				-- try_lint without arguments runs the linters defined in `linters_by_ft`
				-- for the current filetype

				local buf = vim.api.nvim_get_current_buf();
				local allowed = true;
				for _, b in pairs(BANNED_BUFFS) do
					if b == buf then
						allowed = false;
					end
				end
				if vim.fn.filereadable("NONORM") == 1 then
					allowed = false;
				end
				if allowed then
					require("lint").try_lint()
				end
			end,
		})
		vim.api.nvim_create_user_command('ClNorm',function()
			local ns = require("lint").get_namespace("norminette");
			vim.diagnostic.reset(ns, vim.api.nvim_get_current_buf());
		end,{})

		vim.api.nvim_create_user_command('NoNorm',function()
			local ns = require("lint").get_namespace("norminette");
			vim.diagnostic.reset(ns, vim.api.nvim_get_current_buf());
			table.insert(BANNED_BUFFS, vim.api.nvim_get_current_buf());
		end,{})
	end,
}