1 files changed, 100 insertions, 0 deletions
diff --git a/lua/cleantab/init.lua b/lua/cleantab/init.lua
new file mode 100644
index 0000000..aa4a974
--- /dev/null
+++ b/lua/cleantab/init.lua
@@ -0,0 +1,100 @@
+local M = {}
+
+M.fileTitle = function(file)
+	file = vim.fn.fnamemodify(file, ':p:~')
+	local tail = vim.fn.fnamemodify(file, ':t')
+
+	if not tail then
+		return vim.fn.fnamemodify(file, ':p:~:h') .. '/' -- e.g. ~/dir/
+	elseif tail == 'init.lua'
+	    or tail == '__init__.py' then
+		return vim.fn.fnamemodify(vim.fn.fnamemodify(file, ':h'), ':t') .. '/' .. tail -- e.g. luatab/init.lua
+	else
+		return tail
+	end
+end
+
+M.title = function(bufnr)
+	local file = vim.fn.bufname(bufnr)
+	local buftype = vim.fn.getbufvar(bufnr, '&buftype')
+	local filetype = vim.fn.getbufvar(bufnr, '&filetype')
+
+	if buftype == 'help' then
+		return 'help:' .. vim.fn.fnamemodify(file, ':t:r')
+	elseif buftype == 'quickfix' then
+		return 'quickfix'
+	elseif filetype == 'TelescopePrompt' then
+		return 'Telescope'
+	elseif filetype == 'git' then
+		return 'Git'
+	elseif filetype == 'fugitive' then
+		return 'Fugitive'
+	elseif filetype == 'NvimTree' then
+		return 'NvimTree'
+	elseif filetype == 'oil' then
+		return 'Oil'
+	elseif file:sub(file:len()-2, file:len()) == 'FZF' then
+		return 'FZF'
+	elseif buftype == 'terminal' then
+		local _, mtch = string.match(file, "term:(.*):(%a+)")
+		return mtch ~= nil and mtch or vim.fn.fnamemodify(vim.env.SHELL, ':t')
+	elseif file == '' then
+		return '[No Name]'
+	else
+		return M.fileTitle(vim.fn.simplify(file))
+	end
+end
+
+M.modified = function(bufnr)
+	return vim.fn.getbufvar(bufnr, '&modified') == 1 and '+' or ''
+end
+
+M.windowCount = function(index, hl)
+	local nwins = vim.fn.tabpagewinnr(index, '$')
+	return nwins > 1 and '%#TabLineSel#' .. nwins .. hl or ''
+end
+
+M.separator = function(index)
+	return (index < vim.fn.tabpagenr('$') and '%#TabLine#|' or '')
+end
+
+M.cell = function(index)
+	local isSelected = vim.fn.tabpagenr() == index
+	local buflist = vim.fn.tabpagebuflist(index)
+	local winnr = vim.fn.tabpagewinnr(index)
+	local bufnr = buflist[winnr]
+	local hl = (isSelected and '%#TabLineSel#' or '%#TabLine#')
+
+	local prefix = M.windowCount(index, hl) .. M.modified(bufnr) .. ' '
+	return hl .. '%' .. index .. 'T' .. ' ' ..
+		(prefix == ' ' and '' or prefix) ..
+		M.title(bufnr) .. ' ' ..
+		M.separator(index)
+end
+
+M.tabline = function()
+	local line = ''
+	for i = 1, vim.fn.tabpagenr('$'), 1 do
+		line = line .. M.cell(i)
+	end
+	line = line .. '%#TabLineFill#%='
+	if vim.fn.tabpagenr('$') > 1 then
+		line = line .. '%#TabLine#%999XX'
+	end
+	return line
+end
+
+local setup = function(opts)
+	if opts then
+		for key, value in pairs(opts) do
+			M[key] = value
+		end
+	end
+
+	vim.opt.tabline = '%!v:lua.require\'luatab\'.helpers.tabline()'
+end
+
+return {
+	helpers = M,
+	setup = setup,
+}