helm/home/profiles/nvim/private-mode.lua
2025-11-21 21:06:42 -08:00

96 lines
2.4 KiB
Lua

local M = {}
local ns_id = vim.api.nvim_create_namespace('private_mode')
local enabled = false
local concealed_char = '' -- Character to show instead of text
local function conceal_buffer()
local buf = vim.api.nvim_get_current_buf()
local line_count = vim.api.nvim_buf_line_count(buf)
vim.api.nvim_buf_clear_namespace(buf, ns_id, 0, -1)
for i = 0, line_count - 1 do
local line = vim.api.nvim_buf_get_lines(buf, i, i + 1, false)[1]
if line and #line > 0 then
-- Conceal each character individually
for col = 0, #line - 1 do
vim.api.nvim_buf_set_extmark(buf, ns_id, i, col, {
end_col = col + 1,
conceal = concealed_char,
})
end
end
end
end
local function reveal_current_line()
local buf = vim.api.nvim_get_current_buf()
local cursor = vim.api.nvim_win_get_cursor(0)
local current_line = cursor[1] - 1
-- Clear concealment for current line only
vim.api.nvim_buf_clear_namespace(buf, ns_id, current_line, current_line + 1)
end
local function update_display()
if not enabled then return end
conceal_buffer()
local mode = vim.fn.mode()
-- Reveal current line in insert mode
if mode == 'i' or mode == 'R' then
reveal_current_line()
end
end
function M.toggle()
enabled = not enabled
if enabled then
-- Set concealment options
vim.opt_local.conceallevel = 2
vim.opt_local.concealcursor = 'nvc'
-- Initial concealment
update_display()
-- Set up autocommands
local group = vim.api.nvim_create_augroup('PrivateMode', { clear = true })
vim.api.nvim_create_autocmd({'ModeChanged', 'CursorMoved', 'CursorMovedI', 'TextChanged', 'TextChangedI'}, {
group = group,
callback = update_display,
})
print("Private mode enabled")
else
-- Clear all concealment
local buf = vim.api.nvim_get_current_buf()
vim.api.nvim_buf_clear_namespace(buf, ns_id, 0, -1)
-- Clear autocommands
vim.api.nvim_create_augroup('PrivateMode', { clear = true })
print("Private mode disabled")
end
end
function M.setup(opts)
opts = opts or {}
concealed_char = opts.conceal_char or ''
-- Create user command
vim.api.nvim_create_user_command('PrivateMode', function()
M.toggle()
end, {})
-- Optional: Set up a keybinding
if opts.keymap then
vim.keymap.set('n', opts.keymap, M.toggle, { desc = 'Toggle private mode' })
end
end
return M