1 files changed, 87 insertions, 0 deletions
diff --git a/lua/tar.lua b/lua/tar.lua
new file mode 100644
index 0000000..cc0b732
--- /dev/null
+++ b/lua/tar.lua
@@ -0,0 +1,87 @@
+local M = {}
+local C = {} -- config table
+
+function M.setup(opts)
+  opts = opts or {}
+
+  if opts.seperator then
+    if type(opts.seperator) == "string" then
+      C.seperatorstr = opts.seperator
+    elseif type(opts.seperator) == "function" then
+      C.seperator = opts.seperator
+    end
+  else
+    C.separator = M.separator
+    C.seperatorstr = "|"
+  end
+
+  if opts.title then
+    if type(opts.title) == "function" then
+      C.title = opts.title
+    end
+  else
+    C.title = M.title
+  end
+
+  if opts.sign then
+    if type(opts.sign) == "function" then
+      C.sign = opts.sign
+    end
+  else
+    C.sign = M.sign
+  end
+
+  C.noname = opts.noname or "[No Name]"
+  C.closeicon = opts.closeicon or "[x]"
+
+  vim.opt.tabline = "%!v:lua.require\'tar\'.tabline()"
+end
+
+function M.title(bufnr)
+  local fn = vim.fn.bufname(bufnr)
+
+  if fn == '' then
+    return C.noname
+  else
+    return vim.fn.pathshorten(vim.fn.fnamemodify(fn, ':p:~:t'))
+  end
+end
+
+function M.sign(bufnr)
+  if vim.fn.getbufvar(bufnr, '&modified') == 1 then
+    return '[+]'
+  elseif vim.fn.getbufvar(bufnr, '&readonly') == 1 then
+    return '[=]'
+  else
+    return
+  end
+end
+
+function M.separator(index)
+  return (index < vim.fn.tabpagenr('$') and '%#TabLine#'..C.seperatorstr or '')
+end
+
+function M.tab(index)
+  local sel = vim.fn.tabpagenr() == index
+  local buflist = vim.fn.tabpagebuflist(index)
+  local winnr = vim.fn.tabpagewinnr(index)
+  local bufnr = buflist[winnr]
+  local hl = (sel and '%#TabLineSel#' or '%#TabLine#')
+
+  return hl..'%'..index..'T '..C.title(bufnr)..' '..(C.sign(bufnr)
+    and M.sign(bufnr)..' ' or '')..C.separator(index)
+end
+
+function M.tabline()
+  local line = ''
+  for i = 1, vim.fn.tabpagenr('$') do
+    line = line..M.tab(i)
+  end
+  line = line..'%#TabLineFill#%='
+  if vim.fn.tabpagenr('$') > 1 then
+    line = line..'%#TabLine#%999X'..C.closeicon
+  end
+  return line
+end
+
+return M