first

Author: cht

ftdetect/csv-tools.vim

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+au FileType csv command! -buffer CloseTopWindow lua require"csvtools".CloseWindow()
+au FileType csv command! -buffer TopWindow lua require"csvtools".NewWindow()

lua/csvtools.lua

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+local api = vim.api
+
+local M = {
+	winid = nil,
+	buf = nil,
+	mainwindowbuf = nil
+}
+function M.NewWindow()
+	if M.winid == nil then
+		M.mainwindowbuf = vim.api.nvim_get_current_buf()
+		local file = vim.api.nvim_buf_get_name(0)
+		local f = io.open(file,"r")
+
+		local messages = f:read()
+		if messages == nil then
+			return
+		end
+		f:close()
+		messages= messages:gsub("%,","|")
+		local buf = api.nvim_create_buf(false, true) -- create new emtpy buffer
+		vim.cmd[[sview]]
+		api.nvim_win_set_height(0, 1)
+		local win = vim.api.nvim_get_current_win()
+		api.nvim_buf_set_lines(buf, 0, -1, false, { messages })
+		api.nvim_win_set_buf(win,buf)
+		require("csvtools.topbarhighlight").hightlight(buf,messages)
+		--api.nvim_buf_add_highlight(buf, -1, 'WhidHeader',0,0,1)
+		--api.nvim_buf_add_highlight(buf, -1, 'WhidSubHeader', 0, 1, 2)
+		M.winid = win
+		M.buf = buf
+		M.add_mappings()
+	end
+end
+function M.CloseWindow()
+	if M.winid ~=nil then
+		vim.api.nvim_win_close(M.winid,true)
+		M.winid = nil
+		M.buf = nil
+	end
+end
+function M.add_mappings()
+	--print(M.mainwindowbuf)
+	local opts = { nowait = true, noremap = true, silent = true }
+	--vim.api.nvim_buf_set_keymap(M.mainwindowbuf, "n", "<leader>td", ":lua require'csvtools'.CloseWindow<cr>", opts)
+	vim.api.nvim_buf_set_keymap(M.mainwindowbuf, "n", "<leader>tf", ":lua require'csvtools'.NewWindow()<cr>", opts)
+	vim.api.nvim_buf_set_keymap(M.buf, "n", "<leader>td", ":lua require'csvtools'.CloseWindow()<cr>", opts)
+	vim.api.nvim_buf_set_keymap(M.mainwindowbuf, "n", "<leader>td", ":lua require'csvtools'.CloseWindow()<cr>", opts)
+end
+function M.setup(opts)
+	M = vim.tbl_deep_extend("force",M, opts)
+end
+return M

lua/csvtools/topbarhighlight.lua

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+local api = vim.api
+local M = {}
+function M.hightlight(buf,line)
+	local cout = 1
+	for i=1 ,#line do
+		if line:sub(i,i) ~= '|' then
+			if cout % 2 == 0 then
+				cout = cout+ 1
+				print(line:sub(i,i))
+				api.nvim_buf_add_highlight(buf, -1, 'WhidHeader',0,i-1,i)
+			else
+				cout = cout +1
+				api.nvim_buf_add_highlight(buf, -1, 'WhidSubHeader',0,i-1,i)
+			end
+		end
+	end
+end
+return M

plugin/csv-tool.vim

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+au FileType csv lua require"csvtools".NewWindow()
+hi def link WhidHeader      Number
+hi def link WhidSubHeader   Statement