readme updated and minitab fixed

1 files changed, 81 insertions, 0 deletions

diff --git a/lua/minitab.lua b/lua/minitab.lua
new file mode 100644
index 0000000..17acbbf
--- /dev/null
+++ b/lua/minitab.lua
@@ -0,0 +1,81 @@
+local M = {
+	moduleNames = { "init.lua", "__init__.py" },
+	separatorC = "|",
+	modifiedC = "+",
+}
+
+M.title = function(bufnr)
+	local file = vim.fn.simplify(vim.fn.bufname(bufnr))
+	local tail = vim.fn.fnamemodify(file, ':t')
+	local buftype = vim.fn.getbufvar(bufnr, '&buftype')
+	local filetype = vim.fn.getbufvar(bufnr, '&filetype')
+
+	if buftype == "help" then
+		return "help:" .. vim.fn.fnamemodify(tail, ':r')
+	elseif filetype == "netrw" then
+		return file == "" and "netrw" or vim.fn.fnamemodify(file, ':p:~')
+	elseif buftype ~= "" then
+		return buftype
+	elseif file == "" then
+		return filetype == "" and "[No Name]" or filetype
+	elseif vim.tbl_contains(M.moduleNames, tail) then
+		return vim.fn.fnamemodify(vim.fn.fnamemodify(file, ':p:~:h'), ':t') .. "/" .. tail -- e.g. minitab/init.lua
+	end
+
+	return tail
+end
+
+M.modified = function(bufnr)
+	return vim.fn.getbufvar(bufnr, '&modified') == 1 and M.modifiedC or ""
+end
+
+M.windowCount = function(index, hl)
+	local nwins = #vim.tbl_filter(function(bufnr)
+		return vim.fn.win_gettype(vim.fn.bufwinid(bufnr)) == ""  -- windows will appear or disappear at random when editing files etc for no discernible reason
+	end, vim.fn.tabpagebuflist(index))
+	return nwins > 1 and '%#TabLineSel#' .. nwins .. hl or ""
+end
+
+M.separator = function(index, hl)
+	return (index < vim.fn.tabpagenr('$') and '%#TabLine#' .. M.separatorC or "")
+end
+
+M.cell = function(index)
+	local isSelected = vim.fn.tabpagenr() == index
+	local buflist = vim.fn.tabpagebuflist(index)
+	local winnr = vim.fn.tabpagewinnr(index)
+	local bufnr = buflist[winnr]
+	local hl = (isSelected and '%#TabLineSel#' or '%#TabLine#')
+
+	local prefix = M.windowCount(index, hl) .. M.modified(bufnr) .. " "
+	return hl .. '%' .. index .. 'T' .. " " ..
+		(prefix == " " and "" or prefix) ..
+		M.title(bufnr) .. " " ..
+		M.separator(index)
+end
+
+M.tabline = function()
+	local line = ""
+	if vim.fn.tabpagenr('$') <= 1 then
+		return line
+	end
+	for i = 1, vim.fn.tabpagenr('$'), 1 do
+		line = line .. M.cell(i)
+	end
+	return line .. '%#TabLineFill#%=%#TabLine#%999XX'
+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'minitab'.helpers.tabline()"
+end
+
+return {
+	helpers = M,
+	setup = setup,
+}