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Highlight the first defined exchange region

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Closes #13.
This commit is contained in:
Tom McDonald 2014-01-01 11:03:33 -05:00
parent abd197fb5e
commit 39895312ec
1 changed files with 42 additions and 0 deletions
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42
plugin/exchange.vim
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@ -50,6 +50,7 @@ endfunction
function! s:exchange_set(type, ...)
if !exists('b:exchange')
let b:exchange = s:exchange_get(a:type, a:0)
let b:exchange_matches = s:highlight(b:exchange)
else
let exchange1 = b:exchange
let exchange2 = s:exchange_get(a:type, a:0)
@ -69,6 +70,45 @@ endfunction
function! s:exchange_clear()
unlet! b:exchange
if exists('b:exchange_matches')
call s:highlight_clear(b:exchange_matches)
unlet b:exchange_matches
endif
endfunction
function! s:highlight(exchange)
let [text, type, start, end] = a:exchange
let regions = []
if type == "\<C-V>"
let blockstartcol = virtcol([start[1], start[2]])
let blockendcol = virtcol([end[1], end[2]])
if blockstartcol > blockendcol
let [blockstartcol, blockendcol] = [blockendcol, blockstartcol]
endif
let regions += map(range(start[1], end[1]), '[v:val, blockstartcol, v:val, blockendcol]')
else
let [startline, endline] = [start[1], end[1]]
if type ==# 'v'
let startcol = virtcol([startline, start[2]])
let endcol = virtcol([endline, end[2]])
elseif type ==# 'V'
let startcol = 1
let endcol = virtcol([end[1], '$'])
endif
let regions += [[startline, startcol, endline, endcol]]
endif
return map(regions, 's:highlight_region(v:val)')
endfunction
function! s:highlight_region(region)
let pattern = '\%'.a:region[0].'l\%'.a:region[1].'v\_.\{-}\%'.a:region[2].'l\(\%>'.a:region[3].'v\|$\)'
return matchadd('ExchangeRegion', pattern)
endfunction
function! s:highlight_clear(match)
for m in a:match
silent! call matchdelete(m)
endfor
endfunction
" Return < 0 if x comes before y in buffer,
@ -135,6 +175,8 @@ function! s:create_map(mode, lhs, rhs)
endif
endfunction
highlight default ExchangeRegion ctermfg=235 ctermbg=33
nnoremap <silent> <Plug>(Exchange) :<C-u>set opfunc=<SID>exchange_set<CR>g@
vnoremap <silent> <Plug>(Exchange) :<C-u>call <SID>exchange_set(visualmode(), 1)<CR>
nnoremap <silent> <Plug>(ExchangeClear) :<C-u>call <SID>exchange_clear()<CR>