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local function list_listed_bufs()
local bufs = vim.api.nvim_list_bufs()
local result = {}
for _, v in ipairs(bufs) do
if vim.fn.buflisted(v) ~= 0 then
table.insert(result, v)
end
end
return result
end
local function get_previous_buffer(buf)
local bufs = list_listed_bufs()
-- no buffers at all
if #bufs == 0 then return nil end
-- find the buf in bufs
local index = 0
for i, v in ipairs(bufs) do
if buf == v then
index = i
break
end
end
-- it's the only one
if #bufs == 1 and index == 1 then
return nil
end
-- it's the first one
if index == 1 then
return bufs[2]
end
return bufs[index - 1]
end
-- list the windows that are currently editing the given buffer
local function list_wins_editing_buf(buf)
local wins = vim.api.nvim_list_wins()
local result = {}
for _, win in ipairs(wins) do
if vim.api.nvim_win_get_buf(win) == buf then
table.insert(result, win)
end
end
return result
end
local function buf_is_normal(buf)
return vim.fn.bufexists(buf) ~= 0 and vim.fn.buflisted(buf) ~= 0
end
-- Delete current buffer and jump back.
-- If no previous jump, switch to previous buffer.
-- If no previous buffer (no other buffers), create a unnamed one. (So the window does not quit.)
local function win_close_buf()
local buf = vim.api.nvim_get_current_buf()
if not buf_is_normal(buf) then
return
end
local jumps_info = vim.fn.getjumplist()
local old_jumps = { unpack(jumps_info[1], 1, jumps_info[2]) }
while #old_jumps ~= 0 do
local last_jump = old_jumps[#old_jumps]
if last_jump.bufnr ~= buf and vim.fn.bufexists(last_jump.bufnr) ~= 0 and vim.fn.buflisted(last_jump.bufnr) ~= 0 then
break
end
table.remove(old_jumps, #old_jumps)
end
if #old_jumps ~= 0 then
local last_jump = old_jumps[#old_jumps]
vim.api.nvim_win_set_buf(0, last_jump.bufnr)
vim.api.nvim_win_set_cursor(0, {last_jump.lnum, last_jump.col})
else
local previous_buf = get_previous_buffer(buf)
if previous_buf then
vim.api.nvim_win_set_buf(0, previous_buf)
else
local new_buf = vim.api.nvim_create_buf(true, false)
vim.api.nvim_win_set_buf(0, new_buf)
end
end
local wins = list_wins_editing_buf(buf)
if #wins == 0 then
vim.api.nvim_buf_delete(buf, {})
end
end
local function close_float()
local wins = vim.api.nvim_list_wins()
for _, v in ipairs(wins) do
if vim.api.nvim_win_get_config(v).relative ~= '' then
vim.api.nvim_win_close(v, false)
end
end
end
return {
list_listed_bufs = list_listed_bufs,
get_previous_buffer = get_previous_buffer,
list_wins_editing_buf = list_wins_editing_buf,
win_close_buf = win_close_buf,
close_float = close_float,
}
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