feat(nvim): add start buffer

2 files changed, 98 insertions, 1 deletions

diff --git a/nvim/.config/nvim/lua/tobyvin.lua b/nvim/.config/nvim/lua/tobyvin.lua
index 755d403..8a93bfa 100644
--- a/nvim/.config/nvim/lua/tobyvin.lua
+++ b/nvim/.config/nvim/lua/tobyvin.lua
@@ -1,7 +1,7 @@
 require("tobyvin.options")
 require("tobyvin.keymaps")
 require("tobyvin.lazy")
-
+require("tobyvin.utils.start")
 vim.cmd([[colorscheme gruvbox]])
 
 vim.api.nvim_create_autocmd("User", {
diff --git a/nvim/.config/nvim/lua/tobyvin/utils/start.lua b/nvim/.config/nvim/lua/tobyvin/utils/start.lua
new file mode 100644
index 0000000..ae3cd52
--- /dev/null
+++ b/nvim/.config/nvim/lua/tobyvin/utils/start.lua
@@ -0,0 +1,97 @@
+local header = {
+	"                                                    ",
+	" ███╗   ██╗███████╗ ██████╗ ██╗   ██╗██╗███╗   ███╗ ",
+	" ████╗  ██║██╔════╝██╔═══██╗██║   ██║██║████╗ ████║ ",
+	" ██╔██╗ ██║█████╗  ██║   ██║██║   ██║██║██╔████╔██║ ",
+	" ██║╚██╗██║██╔══╝  ██║   ██║╚██╗ ██╔╝██║██║╚██╔╝██║ ",
+	" ██║ ╚████║███████╗╚██████╔╝ ╚████╔╝ ██║██║ ╚═╝ ██║ ",
+	" ╚═╝  ╚═══╝╚══════╝ ╚═════╝   ╚═══╝  ╚═╝╚═╝     ╚═╝ ",
+	"                                                    ",
+}
+
+local function should_skip()
+	-- don't start when opening a file
+	if vim.fn.argc() > 0 then
+		return true
+	end
+
+	-- skip stdin
+	if vim.fn.line2byte(vim.fn.line("$")) ~= -1 then
+		return true
+	end
+
+	-- Handle nvim -M
+	if not vim.o.modifiable then
+		return true
+	end
+
+	for _, arg in pairs(vim.v.argv) do
+		-- whitelisted arguments
+		-- always open
+		if arg == "--startuptime" then
+			return false
+		end
+
+		-- blacklisted arguments
+		-- always skip
+		if
+			arg == "-b"
+			-- commands, typically used for scripting
+			or arg == "-c"
+			or vim.startswith(arg, "+")
+			or arg == "-S"
+		then
+			return true
+		end
+	end
+
+	-- base case: don't skip
+	return false
+end
+
+local function pad_string(str, pad, count)
+	for _ = 1, count do
+		str = pad .. str
+	end
+	return str
+end
+
+if should_skip() then
+	return
+end
+
+local buf = vim.api.nvim_create_buf(true, true)
+
+local width = vim.api.nvim_win_get_width(0)
+local pad_width = math.floor((width / 2) - (#header[1] / 2))
+
+for i, _ in ipairs(header) do
+	header[i] = pad_string(header[i], " ", pad_width)
+end
+
+vim.api.nvim_buf_set_lines(buf, 0, -1, false, header)
+
+vim.bo[buf].modifiable = false
+vim.bo[buf].buflisted = false
+
+vim.api.nvim_set_current_buf(buf)
+
+vim.opt_local.textwidth = 0
+vim.opt_local.bufhidden = "wipe"
+vim.opt_local.buflisted = false
+vim.opt_local.matchpairs = ""
+vim.opt_local.swapfile = false
+vim.opt_local.buftype = "nofile"
+vim.opt_local.filetype = "alpha"
+vim.opt_local.synmaxcol = 0
+vim.opt_local.wrap = false
+vim.opt_local.colorcolumn = ""
+vim.opt_local.foldlevel = 999
+vim.opt_local.foldcolumn = "0"
+vim.opt_local.cursorcolumn = false
+vim.opt_local.cursorline = false
+vim.opt_local.number = false
+vim.opt_local.relativenumber = false
+vim.opt_local.list = false
+vim.opt_local.spell = false
+vim.opt_local.signcolumn = "no"