refactor(pos): move get_lines from lsp.util to pos

runtime/lua/vim/lsp/util.lua

@@ -133,98 +133,9 @@ local function sort_by_key(fn)
   end
 end
 
---- Gets the zero-indexed lines from the given buffer.
---- Works on unloaded buffers by reading the file using libuv to bypass buf reading events.
---- Falls back to loading the buffer and nvim_buf_get_lines for buffers with non-file URI.
----
----@param bufnr integer bufnr to get the lines from
----@param rows integer[] zero-indexed line numbers
----@return table<integer, string> # a table mapping rows to lines
-local function get_lines(bufnr, rows)
-  --- @type integer[]
-  rows = type(rows) == 'table' and rows or { rows }
+local get_lines = vim.pos._get_lines
 
-  -- This is needed for bufload and bufloaded
-  bufnr = vim._resolve_bufnr(bufnr)
-
-  local function buf_lines()
-    local lines = {} --- @type table<integer,string>
-    for _, row in ipairs(rows) do
-      lines[row] = (api.nvim_buf_get_lines(bufnr, row, row + 1, false) or { '' })[1]
-    end
-    return lines
-  end
-
-  -- use loaded buffers if available
-  if vim.fn.bufloaded(bufnr) == 1 then
-    return buf_lines()
-  end
-
-  local uri = vim.uri_from_bufnr(bufnr)
-
-  -- load the buffer if this is not a file uri
-  -- Custom language server protocol extensions can result in servers sending URIs with custom schemes. Plugins are able to load these via `BufReadCmd` autocmds.
-  if uri:sub(1, 4) ~= 'file' then
-    vim.fn.bufload(bufnr)
-    return buf_lines()
-  end
-
-  local filename = api.nvim_buf_get_name(bufnr)
-  if vim.fn.isdirectory(filename) ~= 0 then
-    return {}
-  end
-
-  -- get the data from the file
-  local fd = uv.fs_open(filename, 'r', 438)
-  if not fd then
-    return {}
-  end
-  local stat = assert(uv.fs_fstat(fd))
-  local data = assert(uv.fs_read(fd, stat.size, 0))
-  uv.fs_close(fd)
-
-  local lines = {} --- @type table<integer,true|string> rows we need to retrieve
-  local need = 0 -- keep track of how many unique rows we need
-  for _, row in pairs(rows) do
-    if not lines[row] then
-      need = need + 1
-    end
-    lines[row] = true
-  end
-
-  local found = 0
-  local lnum = 0
-
-  for line in string.gmatch(data, '([^\n]*)\n?') do
-    if lines[lnum] == true then
-      lines[lnum] = line
-      found = found + 1
-      if found == need then
-        break
-      end
-    end
-    lnum = lnum + 1
-  end
-
-  -- change any lines we didn't find to the empty string
-  for i, line in pairs(lines) do
-    if line == true then
-      lines[i] = ''
-    end
-  end
-  return lines --[[@as table<integer,string>]]
-end
-
---- Gets the zero-indexed line from the given buffer.
---- Works on unloaded buffers by reading the file using libuv to bypass buf reading events.
---- Falls back to loading the buffer and nvim_buf_get_lines for buffers with non-file URI.
----
----@param bufnr integer
----@param row integer zero-indexed line number
----@return string the line at row in filename
-local function get_line(bufnr, row)
-  return get_lines(bufnr, { row })[row]
-end
+local get_line = vim.pos._get_line
 
 --- Position is a https://microsoft.github.io/language-server-protocol/specifications/specification-current/#position
 ---@param position lsp.Position