Improve header text objects
- make it work for markdown and media syntax as well - don't find headers in preformatted text or headers of the form = foo == - introduce iH and aH text objects for headers plus subheaders - add a count to include parent headers Inspired by #462
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EinfachToll
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a144be2a30
@ -1093,6 +1093,7 @@ function! vimwiki#base#find_prev_link() "{{{
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endfunction " }}}
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" vimwiki#base#follow_link
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" This is an API function, that is, remappable by the user. Don't change the signature.
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function! vimwiki#base#follow_link(split, reuse, move_cursor, ...) "{{{
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" Parse link at cursor and pass to VimwikiLinkHandler, or failing that, the
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" default open_link handler
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@ -1356,48 +1357,82 @@ endfunction "}}}
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" TEXT OBJECTS functions {{{
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" vimwiki#base#TO_header
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function! vimwiki#base#TO_header(inner, visual) "{{{
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if !search('^\(=\+\).\+\1\s*$', 'bcW')
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function! vimwiki#base#TO_header(inner, including_subheaders, count)
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let headers = s:collect_headers()
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if empty(headers)
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return
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endif
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let sel_start = line("'<")
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let sel_end = line("'>")
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let block_start = line(".")
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let advance = 0
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let current_line = line('.')
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let level = vimwiki#u#count_first_sym(getline('.'))
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let is_header_selected = sel_start == block_start
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\ && sel_start != sel_end
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if a:visual && is_header_selected
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if level > 1
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let level -= 1
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call search('^\(=\{'.level.'\}\).\+\1\s*$', 'bcW')
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" look for the header under which the cursor sits
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if current_line >= headers[-1][0]
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let current_header_index = len(headers) - 1
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else
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let advance = 1
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endif
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let current_header_index = -1
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while headers[current_header_index+1][0] <= current_line
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let current_header_index += 1
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endwhile
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endif
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if current_header_index < 0
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return
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endif
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" from which to which header
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if !a:including_subheaders && a:count <= 1
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let first_line = headers[current_header_index][0]
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let last_line = current_header_index == len(headers)-1 ? line('$') :
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\ headers[current_header_index + 1][0] - 1
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else
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let first_header_index = current_header_index
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for _ in range(a:count - 1)
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let parent = s:get_another_header(headers, first_header_index, -1, '<')
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if parent < 0
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break
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else
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let first_header_index = parent
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endif
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endfor
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let next_sibling_or_higher = s:get_another_header(headers, first_header_index, +1, '<=')
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let first_line = headers[first_header_index][0]
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let last_line =
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\ next_sibling_or_higher >= 0 ? headers[next_sibling_or_higher][0] - 1 : line('$')
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endif
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if a:inner
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let first_line += 1
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let last_line = prevnonblank(last_line)
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endif
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if first_line > last_line
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" this can happen e.g. when doing vih on a header with another header in the very next line
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return
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endif
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call cursor(first_line, 1)
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normal! V
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call cursor(last_line, 1)
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endfunction
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if a:visual && is_header_selected
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call cursor(sel_end + advance, 0)
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endif
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if search('^\(=\{1,'.level.'}\).\+\1\s*$', 'W')
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call cursor(line('.') - 1, 0)
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else
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call cursor(line('$'), 0)
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endif
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function! s:get_another_header(headers, current_index, direction, operation)
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let current_level = a:headers[a:current_index][1]
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let index = a:current_index + a:direction
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if a:inner && getline(line('.')) =~# '^\s*$'
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let lnum = prevnonblank(line('.') - 1)
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call cursor(lnum, 0)
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while 1
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if index < 0 || index >= len(a:headers)
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return -1
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endif
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endfunction "}}}
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if eval('a:headers[index][1] ' . a:operation . ' current_level')
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return index
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endif
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let index += a:direction
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endwhile
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endfunction
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" vimwiki#base#TO_table_cell
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function! vimwiki#base#TO_table_cell(inner, visual) "{{{
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@ -1642,6 +1677,42 @@ function! vimwiki#base#RemoveHeaderLevel() "{{{
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endif
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endfunction " }}}
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" Returns all the headers in the current buffer as a list of the form
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" [[line_number, header_level, header_text], [...], [...], ...]
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function! s:collect_headers()
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let is_inside_pre_or_math = 0 " 1: inside pre, 2: inside math, 0: outside
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let headers = []
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for lnum in range(1, line('$'))
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let line_content = getline(lnum)
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if (is_inside_pre_or_math == 1 && line_content =~# vimwiki#vars#get_syntaxlocal('rxPreEnd')) ||
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\ (is_inside_pre_or_math == 2 && line_content =~# vimwiki#vars#get_syntaxlocal('rxMathEnd'))
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let is_inside_pre_or_math = 0
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continue
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endif
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if is_inside_pre_or_math > 0
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continue
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endif
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if line_content =~# vimwiki#vars#get_syntaxlocal('rxPreStart')
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let is_inside_pre_or_math = 1
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continue
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endif
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if line_content =~# vimwiki#vars#get_syntaxlocal('rxMathStart')
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let is_inside_pre_or_math = 2
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continue
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endif
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if line_content !~# vimwiki#vars#get_syntaxlocal('rxHeader')
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continue
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endif
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let header_level = vimwiki#u#count_first_sym(line_content)
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let header_text = vimwiki#u#trim(matchstr(line_content, vimwiki#vars#get_syntaxlocal('rxHeader')))
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call add(headers, [lnum, header_level, header_text])
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endfor
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return headers
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endfunction
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" a:create == 1: creates or updates TOC in current file
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" a:create == 0: update if TOC exists
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function! vimwiki#base#table_of_contents(create)
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@ -1687,10 +1758,8 @@ function! vimwiki#base#table_of_contents(create)
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endfor
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let h_complete_id .= headers_levels[h_level-1][0]
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if numbering > 0
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\ && numbering <= h_level
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let h_number = join(map(copy(headers_levels[
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\ numbering-1 : h_level-1]), 'v:val[1]'), '.')
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if numbering > 0 && numbering <= h_level
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let h_number = join(map(copy(headers_levels[numbering-1 : h_level-1]), 'v:val[1]'), '.')
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let h_number .= vimwiki#vars#get_global('html_header_numbering_sym')
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let h_text = h_number.' '.h_text
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endif
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@ -620,11 +620,17 @@ nnoremap <silent><script><buffer>
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" Text objects {{{
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onoremap <silent><buffer> ah :<C-U>call vimwiki#base#TO_header(0, 0)<CR>
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vnoremap <silent><buffer> ah :<C-U>call vimwiki#base#TO_header(0, 1)<CR>
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onoremap <silent><buffer> ah :<C-U>call vimwiki#base#TO_header(0, 0, v:count1)<CR>
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vnoremap <silent><buffer> ah :<C-U>call vimwiki#base#TO_header(0, 0, v:count1)<CR>
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onoremap <silent><buffer> ih :<C-U>call vimwiki#base#TO_header(1, 0)<CR>
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vnoremap <silent><buffer> ih :<C-U>call vimwiki#base#TO_header(1, 1)<CR>
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onoremap <silent><buffer> ih :<C-U>call vimwiki#base#TO_header(1, 0, v:count1)<CR>
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vnoremap <silent><buffer> ih :<C-U>call vimwiki#base#TO_header(1, 0, v:count1)<CR>
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onoremap <silent><buffer> aH :<C-U>call vimwiki#base#TO_header(0, 1, v:count1)<CR>
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vnoremap <silent><buffer> aH :<C-U>call vimwiki#base#TO_header(0, 1, v:count1)<CR>
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onoremap <silent><buffer> iH :<C-U>call vimwiki#base#TO_header(1, 1, v:count1)<CR>
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vnoremap <silent><buffer> iH :<C-U>call vimwiki#base#TO_header(1, 1, v:count1)<CR>
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onoremap <silent><buffer> a\ :<C-U>call vimwiki#base#TO_table_cell(0, 0)<CR>
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vnoremap <silent><buffer> a\ :<C-U>call vimwiki#base#TO_table_cell(0, 1)<CR>
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