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" MIT License. Copyright (c) 2013-2014 Bailey Ling.
" vim: et ts=2 sts=2 sw=2
let s:skip_symbol = '…'
function! airline#extensions#tabline#unique_tail_improved#format(bufnr, buffers)
if len(a:buffers) <= 1 " don't need to compare bufnames if has less than one buffer opened
return airline#extensions#tabline#default#format(a:bufnr, a:buffers)
endif
let curbuf_tail = fnamemodify(bufname(a:bufnr), ':t')
let do_deduplicate = 0
let path_tokens = {}
for nr in a:buffers
let name = bufname(nr)
if !empty(name) && nr != a:bufnr && fnamemodify(name, ':t') == curbuf_tail
let do_deduplicate = 1
let tokens = reverse(split(substitute(fnamemodify(name, ':p:.:h'), '\\', '/', 'g'), '/'))
let token_index = 0
for token in tokens
if token == '' | continue | endif
if token == '.' | break | endif
if !has_key(path_tokens, token_index)
let path_tokens[token_index] = {}
endif
let path_tokens[token_index][token] = 1
let token_index += 1
endfor
endif
endfor
if do_deduplicate == 1
let path = []
let token_index = 0
for token in reverse(split(substitute(fnamemodify(bufname(a:bufnr), ':p:.:h'), '\\', '/', 'g'), '/'))
if token == '.' | break | endif
let duplicated = 0
let uniq = 1
let single = 1
if has_key(path_tokens, token_index)
let duplicated = 1
if len(keys(path_tokens[token_index])) > 1 | let single = 0 | endif
if has_key(path_tokens[token_index], token) | let uniq = 0 | endif
endif
call insert(path, {'token': token, 'duplicated': duplicated, 'uniq': uniq, 'single': single})
let token_index += 1
endfor
let buf_name = [curbuf_tail]
let has_uniq = 0
let has_skipped = 0
for token1 in reverse(path)
if !token1['duplicated'] && len(buf_name) > 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
break
endif
if has_uniq == 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
break
endif
if token1['uniq'] == 0 && token1['single'] == 1
let has_skipped = 1
else
if has_skipped == 1
call insert(buf_name, s:skip_symbol)
let has_skipped = 0
endif
call insert(buf_name, token1['token'])
endif
if token1['uniq'] == 1
let has_uniq = 1
endif
endfor
if has_skipped == 1
call insert(buf_name, s:skip_symbol)
endif
return airline#extensions#tabline#default#wrap_name(a:bufnr, join(buf_name, '/'))
else
return airline#extensions#tabline#default#format(a:bufnr, a:buffers)
endif
endfunction
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