mirror of
https://github.com/hexedtech/codemp-nvim.git
synced 2024-11-25 00:44:52 +01:00
203 lines
6.3 KiB
Lua
203 lines
6.3 KiB
Lua
local native = require('codemp.loader').load()
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local available_colors = { -- TODO these are definitely not portable!
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"ErrorMsg",
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"WarningMsg",
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"MatchParen",
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"SpecialMode",
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"CmpItemKindFunction",
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"CmpItemKindValue",
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"CmpItemKindInterface",
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}
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---@param x string
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---@return string
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local function color(x)
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return available_colors[ math.fmod(math.abs(native.hash(x)), #available_colors) + 1 ]
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end
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---@param x [ [integer, integer], [integer, integer] ]
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---@return [ [integer, integer], [integer, integer] ]
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local function order_tuples(x) -- TODO send help...
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if x[1][1] < x[2][1] then
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return { { x[1][1], x[1][2] }, { x[2][1], x[2][2] } }
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elseif x[1][1] > x[2][1] then
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return { { x[2][1], x[2][2] }, { x[1][1], x[1][2] } }
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elseif x[1][2] < x[2][2] then
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return { { x[1][1], x[1][2] }, { x[2][1], x[2][2] } }
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else
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return { { x[2][1], x[2][2] }, { x[1][1], x[1][2] } }
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end
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end
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---@param first integer
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---@param last integer
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---@return integer, integer, integer, integer
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local function offset_to_rowcol(first, last)
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local start_row, start_col, end_row, end_col
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-- TODO this seems to work but i lost my sanity over it. if you want
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-- to try and make it better be warned api is madness but i will
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-- thank you a lot because this is an ugly mess...
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--
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-- edge cases to test:
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-- - [x] add newline in buffer
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-- - [x] append newline to buffer
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-- - [x] delete multiline
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-- - [x] append at end of buffer
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-- - [x] delete at end of buffer
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-- - [x] delete line at end of buffer
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-- - [x] delete multiline at end of buffer
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-- - [x] autocomplete
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-- - [ ] delete whole buffer
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-- - [ ] enter insert in newline with `o`
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start_row = vim.fn.byte2line(first + 1) - 1
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if start_row == -2 then
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-- print("?? clamping start_row to start")
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start_row = vim.fn.line('$') - 1
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end
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local first_col_byte = vim.fn.line2byte(start_row + 1) - 1
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if first_col_byte == -2 then
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-- print("?? clamping start_col to 0")
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start_col = 0
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else
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start_col = first - first_col_byte
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end
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if first == last then
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end_row = start_row
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end_col = start_col
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else
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end_row = vim.fn.byte2line(last + 1) - 1
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if end_row == -2 then
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print("?? clamping end_row to end")
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end_row = vim.fn.line('$') - 1
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end_col = last - vim.fn.line2byte(end_row + 1)
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else
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end_col = last - (vim.fn.line2byte(end_row + 1) - 1)
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end
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end
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-- TODO this is an older approach, which covers less edge cases
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-- but i didnt bother documenting/testing it yet properly
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----send help it works but why is lost knowledge
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--start_row = vim.fn.byte2line(first + 1) - 1
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--if start_row < 0 then start_row = 0 end
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--local start_row_byte = vim.fn.line2byte(start_row + 1) - 1
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--if start_row_byte < 0 then start_row_byte = 0 end
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--start_col = first - start_row_byte
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--end_row = vim.fn.byte2line(last + 1) - 1
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--if end_row < 0 then end_row = 0 end
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--local end_row_byte = vim.fn.line2byte(end_row + 1) - 1
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--if end_row_byte < 0 then end_row_byte = 0 end
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--end_col = last - end_row_byte
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return start_row, start_col, end_row, end_col
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end
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---@return [ [integer, integer], [integer, integer] ]
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local function cursor_position()
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local mode = vim.api.nvim_get_mode().mode
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if mode == "v" then
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local _, ls, cs = unpack(vim.fn.getpos('v'))
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local _, le, ce = unpack(vim.fn.getpos('.'))
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return order_tuples({ { ls-1, cs-1 }, { le-1, ce } })
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elseif mode == "V" then
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local _, ls, _ = unpack(vim.fn.getpos('v'))
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local _, le, _ = unpack(vim.fn.getpos('.'))
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if le > ls then
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local ce = vim.fn.strlen(vim.fn.getline(le))
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return { { ls-1, 0 }, { le-1, ce } }
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else
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local ce = vim.fn.strlen(vim.fn.getline(ls))
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return { { le-1, 0 }, { ls-1, ce } }
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end
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else
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local win = vim.api.nvim_get_current_win()
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local cur = vim.api.nvim_win_get_cursor(win)
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return order_tuples({ { cur[1]-1, cur[2] }, { cur[1]-1, cur[2]+1 } })
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end
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end
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---@param buf integer?
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---@return string
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local function buffer_get_content(buf)
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if buf == nil then
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buf = vim.api.nvim_get_current_buf()
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end
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local lines = vim.api.nvim_buf_get_lines(buf, 0, -1, false)
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return table.concat(lines, '\n')
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end
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---@param buf integer
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---@param content string
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---@param first integer?
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---@param last integer?
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---set content of a buffer using byte indexes
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---if first and last are both nil, set whole buffer content
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---if first is nil, it defaults to 0
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---if last is nil, it will calculate and use the last byte in the buffer
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local function buffer_set_content(buf, content, first, last)
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if first == nil and last == nil then
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local lines = vim.split(content, "\n", {trimempty=false})
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vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
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else
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if first == nil then first = 0 end
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if last == nil then
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local line_count = vim.api.nvim_buf_line_count(buf)
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last = vim.api.nvim_buf_get_offset(buf, line_count + 1)
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end
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local first_row, first_col, last_row, last_col
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vim.api.nvim_buf_call(buf, function()
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first_row, first_col, last_row, last_col = offset_to_rowcol(first or 0, last or 0)
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end)
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local content_array
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if content == "" then
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content_array = {}
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else
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content_array = vim.split(content, "\n", {trimempty=false})
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end
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if CODEMP.config.debug then
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print(string.format("nvim_buf_set_text [%s..%s::'%s'] -> start(row:%s col:%s) end(row:%s, col:%s)", first, last, content, first_row, first_col, last_row, last_col))
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end
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vim.api.nvim_buf_set_text(buf, first_row, first_col, last_row, last_col, content_array)
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end
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end
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---@param buf integer buffer to highlight onto
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---@param ns integer namespace for highlight
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---@param group string highlight group
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---@param start RowCol
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---@param fini RowCol
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local function multiline_highlight(buf, ns, group, start, fini)
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for i=start.row,fini.row do
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if i == start.row and i == fini.row then
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local fini_col = fini.col
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if start.col == fini.col then fini_col = fini_col + 1 end
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vim.api.nvim_buf_add_highlight(buf, ns, group, i, start.col, fini_col)
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elseif i == start.row then
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vim.api.nvim_buf_add_highlight(buf, ns, group, i, start.col, -1)
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elseif i == fini.row then
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vim.api.nvim_buf_add_highlight(buf, ns, group, i, 0, fini.col)
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else
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vim.api.nvim_buf_add_highlight(buf, ns, group, i, 0, -1)
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end
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end
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end
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return {
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order_tuples = order_tuples,
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multiline_highlight = multiline_highlight,
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cursor = {
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position = cursor_position,
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},
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buffer = {
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get_content = buffer_get_content,
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set_content = buffer_set_content,
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},
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hash = native.hash,
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available_colors = available_colors,
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color = color,
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}
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