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local direction_map = {
left = "h",
right = "l",
up = "k",
down = "j",
}
local runtime_dir = os.getenv("XDG_RUNTIME_DIR") or "/tmp"
local function sanitize(value)
return value:gsub("[^%w_.-]", "_")
end
local function get_hyprland_stable_id()
local handle = io.popen("hyprctl activewindow -j 2>/dev/null")
if not handle then
return "unknown"
end
local data = handle:read("*a")
handle:close()
local ok, json = pcall(vim.json.decode, data)
if ok and json and json.stableId then
return tostring(json.stableId)
end
return "unknown"
end
local function get_socket_path()
local pane_id = vim.env.HERDR_PANE_ID or vim.env.TMUX_PANE
if pane_id and pane_id ~= "" then
return string.format(
"%s/nvim-hypr-nav-pane-%s.sock",
runtime_dir,
sanitize(pane_id)
)
end
return string.format(
"%s/nvim-hypr-nav-%s.sock",
runtime_dir,
get_hyprland_stable_id()
)
end
local socket_path = get_socket_path()
local server = vim.uv.new_pipe(false)
local function reply(connection, response)
local ok = pcall(function()
connection:write(response, function()
pcall(function()
connection:close()
end)
end)
end)
if not ok then
pcall(function()
connection:close()
end)
end
end
-- Normally unnecessary because Herdr sockets contain the process ID, but it
-- also cleans up an ungracefully terminated direct-Neovim instance if the PID
-- happened to be reused.
vim.uv.fs_unlink(socket_path)
server:bind(socket_path)
server:listen(128, function(err)
if err then
vim.schedule(function()
vim.notify("hypr-nav: " .. err, vim.log.levels.ERROR)
end)
return
end
local connection = vim.uv.new_pipe(false)
server:accept(connection)
connection:read_start(function(read_err, data)
if read_err or not data then
pcall(function()
connection:close()
end)
return
end
local direction = data:match("nav:(%a+)")
if not direction or not direction_map[direction] then
reply(connection, "invalid\n")
return
end
vim.schedule(function()
local before = vim.api.nvim_get_current_win()
vim.cmd("wincmd " .. direction_map[direction])
local after = vim.api.nvim_get_current_win()
local response = before == after and "failed\n" or "success\n"
reply(connection, response)
end)
end)
end)
vim.api.nvim_create_autocmd("VimLeavePre", {
once = true,
callback = function()
pcall(function()
server:close()
end)
vim.uv.fs_unlink(socket_path)
end,
})
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