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Display a path with multi-byte characters correctly when it is truncated

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When a path is rendered in the Bookmarks area or as the header line of the
tree, it is truncated if there is no enough space for it.  But if a path
contains multi-byte characters, it should be truncated by characters, not
bytes, otherwise the path may be truncated between the bytes of a
multi-byte character.  To deal with multi-byte characters, use
strdisplaywidth() instead of len() to get the number of display cells, and
use strcharpart() instead of strpart() to truncate a path.
This commit is contained in:
bravestarr 2018-04-22 21:18:46 +08:00
parent 727770147a
commit 6aff1b6cd3
2 changed files with 10 additions and 5 deletions
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9
lib/nerdtree/bookmark.vim
View File

@ -280,14 +280,17 @@ endfunction
" FUNCTION: Bookmark.str() {{{1
" Get the string that should be rendered in the view for this bookmark
function! s:Bookmark.str()
let pathStrMaxLen = winwidth(g:NERDTree.GetWinNum()) - 4 - len(self.name)
let pathStrMaxLen = winwidth(g:NERDTree.GetWinNum()) - 4 - strdisplaywidth(self.name)
if &nu
let pathStrMaxLen = pathStrMaxLen - &numberwidth
endif
let pathStr = self.path.str({'format': 'UI'})
if len(pathStr) > pathStrMaxLen
let pathStr = '<' . strpart(pathStr, len(pathStr) - pathStrMaxLen)
if strdisplaywidth(pathStr) > pathStrMaxLen
while strdisplaywidth(pathStr) > pathStrMaxLen && strchars(pathStr) > 0
let pathStr = strcharpart(pathStr, 1)
endwhile
let pathStr = '<' . pathStr
endif
return '>' . self.name . ' ' . pathStr
endfunction

6
lib/nerdtree/path.vim
View File

@ -719,8 +719,10 @@ function! s:Path.str(...)
if has_key(options, 'truncateTo')
let limit = options['truncateTo']
if len(toReturn) > limit-1
let toReturn = toReturn[(len(toReturn)-limit+1):]
if strdisplaywidth(toReturn) > limit-1
while strdisplaywidth(toReturn) > limit-1 && strchars(toReturn) > 0
let toReturn = strcharpart(toReturn, 1)
endwhile
if len(split(toReturn, '/')) > 1
let toReturn = '</' . join(split(toReturn, '/')[1:], '/') . '/'
else