view src/testdir/view_util.vim @ 31164:7831da568864 v9.0.0916

patch 9.0.0916: getbufline() is inefficient for getting a single line Commit: https://github.com/vim/vim/commit/ce30ccc06af7f2c03762e5b18dde37b26ea6ec42 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 21 19:57:04 2022 +0000 patch 9.0.0916: getbufline() is inefficient for getting a single line Problem: getbufline() is inefficient for getting a single line. Solution: Add getbufoneline().
author Bram Moolenaar <Bram@vim.org>
date Mon, 21 Nov 2022 21:00:06 +0100
parents f936d46cc9c1
children a864e75257dd
line wrap: on
line source

" Functions about view shared by several tests

" Only load this script once.
if exists('*Screenline')
  finish
endif

" Get line "lnum" as displayed on the screen.
" Trailing white space is trimmed.
func Screenline(lnum)
  let chars = []
  for c in range(1, winwidth(0))
    call add(chars, nr2char(screenchar(a:lnum, c)))
  endfor
  let line = join(chars, '')
  return matchstr(line, '^.\{-}\ze\s*$')
endfunc

" Get text on the screen, including composing characters.
" ScreenLines(lnum, width) or
" ScreenLines([start, end], width)
func ScreenLines(lnum, width) abort
  redraw!
  if type(a:lnum) == v:t_list
    let start = a:lnum[0]
    let end = a:lnum[1]
  else
    let start = a:lnum
    let end = a:lnum
  endif
  let lines = []
  for l in range(start, end)
    let lines += [join(map(range(1, a:width), 'screenstring(l, v:val)'), '')]
  endfor
  return lines
endfunc

func ScreenAttrs(lnum, width) abort
  redraw!
  if type(a:lnum) == v:t_list
    let start = a:lnum[0]
    let end = a:lnum[1]
  else
    let start = a:lnum
    let end = a:lnum
  endif
  let attrs = []
  for l in range(start, end)
    let attrs += [map(range(1, a:width), 'screenattr(l, v:val)')]
  endfor
  return attrs
endfunc

func NewWindow(height, width) abort
  exe a:height . 'new'
  exe a:width . 'vsp'
  set winfixwidth winfixheight
  redraw!
endfunc

func CloseWindow() abort
  bw!
  redraw!
endfunc