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local context_manager = require('plenary.context_manager')
local has_ts, _ = pcall(require, 'nvim-treesitter')
local _, ts_highlight = pcall(require, 'nvim-treesitter.highlight')
local _, ts_parsers = pcall(require, 'nvim-treesitter.parsers')
local Job = require('plenary.job')
local utils = {}
utils.with_preview_window = function(status, bufnr, callable)
if bufnr and vim.api.nvim_buf_call and false then
vim.api.nvim_buf_call(bufnr, callable)
else
return context_manager.with(function()
vim.cmd(string.format("noautocmd call nvim_set_current_win(%s)", status.preview_win))
coroutine.yield()
vim.cmd(string.format("noautocmd call nvim_set_current_win(%s)", status.prompt_win))
end, callable)
end
end
-- API helper functions for buffer previewer
--- Job maker for buffer previewer
utils.job_maker = function(cmd, bufnr, opts)
opts = opts or {}
opts.mode = opts.mode or "insert"
-- bufname and value are optional
-- if passed, they will be use as the cache key
-- if any of them are missing, cache will be skipped
if opts.bufname ~= opts.value or not opts.bufname or not opts.value then
local command = table.remove(cmd, 1)
Job:new({
command = command,
args = cmd,
env = opts.env,
cwd = opts.cwd,
on_exit = vim.schedule_wrap(function(j)
if not vim.api.nvim_buf_is_valid(bufnr) then return end
if opts.mode == "append" then
vim.api.nvim_buf_set_lines(bufnr, -1, -1, false, j:result())
elseif opts.mode == "insert" then
vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, j:result())
end
if opts.callback then opts.callback(bufnr, j:result()) end
end)
}):start()
else
if opts.callback then opts.callback(bufnr) end
end
end
local function has_filetype(ft)
return ft and ft ~= ''
end
--- Attach default highlighter which will choose between regex and ts
utils.highlighter = function(bufnr, ft)
if not(utils.ts_highlighter(bufnr, ft)) then
utils.regex_highlighter(bufnr, ft)
end
end
--- Attach regex highlighter
utils.regex_highlighter = function(bufnr, ft)
if has_filetype(ft) then
vim.api.nvim_buf_set_option(bufnr, "syntax", ft)
return true
end
return false
end
-- Attach ts highlighter
utils.ts_highlighter = function(bufnr, ft)
if not has_ts then
has_ts, _ = pcall(require, 'nvim-treesitter')
if has_ts then
_, ts_highlight = pcall(require, 'nvim-treesitter.highlight')
_, ts_parsers = pcall(require, 'nvim-treesitter.parsers')
end
end
if has_ts and has_filetype(ft) then
local lang = ts_parsers.ft_to_lang(ft);
if ts_parsers.has_parser(lang) then
ts_highlight.attach(bufnr, lang)
return true
end
end
return false
end
return utils
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