mirror of https://github.com/tiyn/tidy.nvim
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77 lines
1.9 KiB
77 lines
1.9 KiB
local M = {}
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M.enabled = true
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function M.toggle()
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M.enabled = not M.enabled
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if not M.enabled then
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vim.notify("Tidy disabled on save", vim.log.levels.WARN, { title = "Tidy" })
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else
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vim.notify("Tidy enabled on save", vim.log.levels.INFO, { title = "Tidy" })
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end
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end
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local function is_excluded_ft(opts)
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local ft = vim.api.nvim_buf_get_option(0, "filetype")
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return vim.list_contains(opts.filetype_exclude, ft)
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end
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local function reset_cursor_pos(pos)
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local num_rows = vim.api.nvim_buf_line_count(0)
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--[[
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if the row value in the original cursor
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position tuple is greater than the
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line count after empty line deletion
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(meaning that the cursor was inside of
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the group of empty lines at the end of
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the file when they were deleted), set
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the cursor row to the last line.
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]]
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if pos[1] > num_rows then
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pos[1] = num_rows
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end
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vim.api.nvim_win_set_cursor(0, pos)
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end
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function M.setup(opts)
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local defaults = {
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filetype_exclude = {},
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}
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opts = vim.tbl_extend("force", defaults, opts or {})
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if not vim.tbl_islist(opts.filetype_exclude) then
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vim.notify(
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"tidy.nvim: filetype_exclude option must be a list-like table...",
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vim.log.levels.ERROR,
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{ title = "Tidy" }
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)
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end
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local tidy_grp = vim.api.nvim_create_augroup("tidy", { clear = true })
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vim.api.nvim_create_autocmd("BufWritePre", {
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group = tidy_grp,
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callback = function()
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if not M.enabled or is_excluded_ft(opts) or (vim.b.editorconfig ~= nil and not vim.tbl_isempty(vim.b.editorconfig)) then
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return false
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end
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local cursor_pos = vim.api.nvim_win_get_cursor(0)
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-- delete trailing whitespace
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vim.cmd([[:keepjumps keeppatterns %s/\s\+$//e]])
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-- delete lines @ eof
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vim.cmd([[:keepjumps keeppatterns silent! 0;/^\%(\n*.\)\@!/,$d_]])
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reset_cursor_pos(cursor_pos)
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end,
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})
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end
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return M
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