my-nvim-setup/lua/core/utils.lua

283 lines
8.5 KiB
Lua

local M = {}
local cmd = vim.cmd
M.close_buffer = function(force)
-- This is a modification of a NeoVim plugin from
-- Author: ojroques - Olivier Roques
-- Src: https://github.com/ojroques/nvim-bufdel
-- (Author has okayed copy-paste)
-- Options
local opts = {
next = "cycle", -- how to retrieve the next buffer
quit = false, -- exit when last buffer is deleted
--TODO make this a chadrc flag/option
}
-- ----------------
-- Helper functions
-- ----------------
-- Switch to buffer 'buf' on each window from list 'windows'
local function switch_buffer(windows, buf)
local cur_win = vim.fn.winnr()
for _, winid in ipairs(windows) do
winid = tonumber(winid) or 0
vim.cmd(string.format("%d wincmd w", vim.fn.win_id2win(winid)))
vim.cmd(string.format("buffer %d", buf))
end
vim.cmd(string.format("%d wincmd w", cur_win)) -- return to original window
end
-- Select the first buffer with a number greater than given buffer
local function get_next_buf(buf)
local next = vim.fn.bufnr "#"
if opts.next == "alternate" and vim.fn.buflisted(next) == 1 then
return next
end
for i = 0, vim.fn.bufnr "$" - 1 do
next = (buf + i) % vim.fn.bufnr "$" + 1 -- will loop back to 1
if vim.fn.buflisted(next) == 1 then
return next
end
end
end
-- ----------------
-- End helper functions
-- ----------------
local buf = vim.fn.bufnr()
if vim.fn.buflisted(buf) == 0 then -- exit if buffer number is invalid
vim.cmd "close"
return
end
if #vim.fn.getbufinfo { buflisted = 1 } < 2 then
if opts.quit then
-- exit when there is only one buffer left
if force then
vim.cmd "qall!"
else
vim.cmd "confirm qall"
end
return
end
local chad_term, _ = pcall(function()
return vim.api.nvim_buf_get_var(buf, "term_type")
end)
if chad_term then
-- Must be a window type
vim.cmd(string.format("setlocal nobl", buf))
vim.cmd "enew"
return
end
-- don't exit and create a new empty buffer
vim.cmd "enew"
vim.cmd "bp"
end
local next_buf = get_next_buf(buf)
local windows = vim.fn.getbufinfo(buf)[1].windows
-- force deletion of terminal buffers to avoid the prompt
if force or vim.fn.getbufvar(buf, "&buftype") == "terminal" then
local chad_term, type = pcall(function()
return vim.api.nvim_buf_get_var(buf, "term_type")
end)
-- TODO this scope is error prone, make resilient
if chad_term then
if type == "wind" then
-- hide from bufferline
vim.cmd(string.format("%d bufdo setlocal nobl", buf))
-- switch to another buff
-- TODO switch to next buffer, this works too
vim.cmd "BufferLineCycleNext"
else
local cur_win = vim.fn.winnr()
-- we can close this window
vim.cmd(string.format("%d wincmd c", cur_win))
return
end
else
switch_buffer(windows, next_buf)
vim.cmd(string.format("bd! %d", buf))
end
else
switch_buffer(windows, next_buf)
vim.cmd(string.format("silent! confirm bd %d", buf))
end
-- revert buffer switches if user has canceled deletion
if vim.fn.buflisted(buf) == 1 then
switch_buffer(windows, buf)
end
end
-- hide statusline
-- tables fetched from load_config function
M.hide_statusline = function()
local hidden = require("core.utils").load_config().plugins.options.statusline.hidden
local shown = require("core.utils").load_config().plugins.options.statusline.shown
local api = vim.api
local buftype = api.nvim_buf_get_option(0, "ft")
-- shown table from config has the highest priority
if vim.tbl_contains(shown, buftype) then
api.nvim_set_option("laststatus", 2)
return
end
if vim.tbl_contains(hidden, buftype) then
api.nvim_set_option("laststatus", 0)
return
end
api.nvim_set_option("laststatus", 2)
end
M.load_config = function()
local conf = require "core.default_config"
local chadrcExists, change = pcall(require, "custom.chadrc")
-- if chadrc exists , then merge its table into the default config's
if chadrcExists then
conf = vim.tbl_deep_extend("force", conf, change)
end
return conf
end
M.map = function(mode, keys, command, opt)
local options = { noremap = true, silent = true }
if opt then
options = vim.tbl_extend("force", options, opt)
end
-- all valid modes allowed for mappings
-- :h map-modes
local valid_modes = {
[""] = true,
["n"] = true,
["v"] = true,
["s"] = true,
["x"] = true,
["o"] = true,
["!"] = true,
["i"] = true,
["l"] = true,
["c"] = true,
["t"] = true,
}
-- helper function for M.map
-- can gives multiple modes and keys
local function map_wrapper(sub_mode, lhs, rhs, sub_options)
if type(lhs) == "table" then
for _, key in ipairs(lhs) do
map_wrapper(sub_mode, key, rhs, sub_options)
end
else
if type(sub_mode) == "table" then
for _, m in ipairs(sub_mode) do
map_wrapper(m, lhs, rhs, sub_options)
end
else
if valid_modes[sub_mode] and lhs and rhs then
vim.api.nvim_set_keymap(sub_mode, lhs, rhs, sub_options)
else
sub_mode, lhs, rhs = sub_mode or "", lhs or "", rhs or ""
print(
"Cannot set mapping [ mode = '" .. sub_mode .. "' | key = '" .. lhs .. "' | cmd = '" .. rhs .. "' ]"
)
end
end
end
end
map_wrapper(mode, keys, command, options)
end
-- load plugin after entering vim ui
M.packer_lazy_load = function(plugin, timer)
if plugin then
timer = timer or 0
vim.defer_fn(function()
require("packer").loader(plugin)
end, timer)
end
end
-- Highlights functions
-- Define bg color
-- @param group Group
-- @param color Color
M.bg = function(group, col)
cmd("hi " .. group .. " guibg=" .. col)
end
-- Define fg color
-- @param group Group
-- @param color Color
M.fg = function(group, col)
cmd("hi " .. group .. " guifg=" .. col)
end
-- Define bg and fg color
-- @param group Group
-- @param fgcol Fg Color
-- @param bgcol Bg Color
M.fg_bg = function(group, fgcol, bgcol)
cmd("hi " .. group .. " guifg=" .. fgcol .. " guibg=" .. bgcol)
end
-- Override default config of a plugin based on the path provided in the chadrc
-- Arguments:
-- 1st - name of plugin
-- 2nd - default config path
-- 3rd - optional function name which will called from default_config path
-- e.g: if given args - "telescope", "plugins.configs.telescope", "setup"
-- then return "require('plugins.configs.telescope').setup()"
-- if 3rd arg not given, then return "require('plugins.configs.telescope')"
-- if override is a table, mark set the override flag for the default config to true
-- override flag being true tells the plugin to call tbl_override_req as part of configuration
M.override_req = function(name, default_config, config_function)
local override, apply_table_override =
require("core.utils").load_config().plugins.default_plugin_config_replace[name], "false"
local result = default_config
if type(override) == "string" and override ~= "" then
return "require('" .. override .. "')"
elseif type(override) == "table" then
apply_table_override = "true"
elseif type(override) == "function" then
return override
end
result = "('" .. result .. "')"
if type(config_function) == "string" and config_function ~= "" then
-- add the . to call the functions and concatenate true or false as argument
result = result .. "." .. config_function .. "(" .. apply_table_override .. ")"
end
return "require" .. result
end
-- Override parts of default config of a plugin based on the table provided in the chadrc
-- FUNCTION: tbl_override_req, use `chadrc` plugin config override to modify default config if present
-- name = name inside `default_config` / `chadrc`
-- default_table = the default configuration table of the plugin
-- returns the modified configuration table
M.tbl_override_req = function(name, default_table)
local override = require("core.utils").load_config().plugins.default_plugin_config_replace[name] or {}
return vim.tbl_deep_extend("force", default_table, override)
end
return M