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d9ed4c8566
Problem: - Various `TermRequest` handlers which all do similar things. - `tty.query` is specific to `XTGETTCAP DCS`, can't be reused for other kinds of terminal queries. Solution: Provide `tty.request()`.
71 lines
2.0 KiB
Lua
71 lines
2.0 KiB
Lua
local M = {}
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--- Return the OSC 52 escape sequence
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---
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--- @param clipboard string The clipboard to read from or write to
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--- @param contents string The Base64 encoded contents to write to the clipboard, or '?' to read
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--- from the clipboard
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local function osc52(clipboard, contents)
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return string.format('\027]52;%s;%s\027\\', clipboard, contents)
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end
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function M.copy(reg)
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local clipboard = reg == '+' and 'c' or 'p'
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return function(lines)
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local s = table.concat(lines, '\n')
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-- The data to be written here can be quite long.
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vim.api.nvim_ui_send(osc52(clipboard, vim.base64.encode(s)))
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end
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end
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function M.paste(reg)
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local clipboard = reg == '+' and 'c' or 'p'
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return function()
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local contents = nil --- @type string?
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-- timeout=0: we manage the staged 1s/9s timeout via vim.wait below.
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local id = vim.tty.request(osc52(clipboard, '?'), { timeout = 0 }, function(resp)
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local encoded = resp:match('\027%]52;%w?;([A-Za-z0-9+/=]*)')
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if encoded then
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contents = vim.base64.decode(encoded)
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return true
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end
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end)
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-- Wait 1s first for terminals that respond quickly
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local ok, res = vim.wait(1000, function()
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return contents ~= nil
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end)
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if res == -1 then
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-- If no response was received after 1s, print a message and keep waiting
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vim.api.nvim_echo(
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{ { 'Waiting for OSC 52 response from the terminal. Press Ctrl-C to interrupt...' } },
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false,
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{}
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)
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ok, res = vim.wait(9000, function()
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return contents ~= nil
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end)
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end
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if not ok then
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pcall(vim.api.nvim_del_autocmd, id)
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if res == -1 then
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vim.notify(
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'Timed out waiting for a clipboard response from the terminal',
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vim.log.levels.WARN
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)
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elseif res == -2 then
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-- Clear message area
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vim.api.nvim_echo({ { '' } }, false, {})
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end
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return 0
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end
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-- If we get here, contents should be non-nil
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return vim.split(assert(contents), '\n')
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end
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end
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return M
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