124 lines
3.0 KiB
VimL
124 lines
3.0 KiB
VimL
" sleuth.vim - Heuristically set buffer options
|
|
" Maintainer: Tim Pope <http://tpo.pe/>
|
|
" Version: 1.0
|
|
" GetLatestVimScripts: 4375 1 :AutoInstall: sleuth.vim
|
|
|
|
if exists("g:loaded_sleuth") || v:version < 700 || &cp
|
|
finish
|
|
endif
|
|
let g:loaded_sleuth = 1
|
|
|
|
function! s:guess(lines) abort
|
|
let options = {}
|
|
let ccomment = 0
|
|
|
|
for line in a:lines
|
|
|
|
if line =~# '^\s\+$'
|
|
continue
|
|
endif
|
|
|
|
if line =~# '^\s*/\*'
|
|
let ccomment = 1
|
|
endif
|
|
if ccomment
|
|
if line =~# '\*/'
|
|
let ccomment = 0
|
|
endif
|
|
continue
|
|
endif
|
|
|
|
let softtab = repeat(' ', 8)
|
|
if line =~# '^\t'
|
|
let options.expandtab = 0
|
|
elseif line =~# '^' . softtab
|
|
let options.expandtab = 1
|
|
endif
|
|
let indent = len(matchstr(substitute(line, '\t', softtab, 'g'), '^ *'))
|
|
if indent > 1 && get(options, 'shiftwidth', 99) > indent
|
|
let options.shiftwidth = indent
|
|
endif
|
|
|
|
endfor
|
|
|
|
return options
|
|
endfunction
|
|
|
|
function! s:patterns_for(type) abort
|
|
if a:type ==# ''
|
|
return []
|
|
endif
|
|
if !exists('s:patterns')
|
|
redir => capture
|
|
silent autocmd BufRead
|
|
redir END
|
|
let patterns = {
|
|
\ 'c': ['*.c'],
|
|
\ 'html': ['*.html'],
|
|
\ 'sh': ['*.sh'],
|
|
\ }
|
|
let setfpattern = '\s\+\%(setf\%[iletype]\s\+\|set\%[local]\s\+\%(ft\|filetype\)=\|call SetFileTypeSH(["'']\%(ba\|k\)\=\%(sh\)\@=\)'
|
|
for line in split(capture, "\n")
|
|
let match = matchlist(line, '^\s*\(\S\+\)\='.setfpattern.'\(\w\+\)')
|
|
if !empty(match)
|
|
call extend(patterns, {match[2]: []}, 'keep')
|
|
call extend(patterns[match[2]], [match[1] ==# '' ? last : match[1]])
|
|
endif
|
|
let last = matchstr(line, '\S.*')
|
|
endfor
|
|
let s:patterns = patterns
|
|
endif
|
|
return copy(get(s:patterns, a:type, []))
|
|
endfunction
|
|
|
|
function! s:apply_if_ready(options) abort
|
|
if !has_key(a:options, 'expandtab') || !has_key(a:options, 'shiftwidth')
|
|
return 0
|
|
else
|
|
for [option, value] in items(a:options)
|
|
call setbufvar('', '&'.option, value)
|
|
endfor
|
|
return 1
|
|
endif
|
|
endfunction
|
|
|
|
function! s:detect() abort
|
|
let options = s:guess(getline(1, 1024))
|
|
if s:apply_if_ready(options)
|
|
return
|
|
endif
|
|
let patterns = s:patterns_for(&filetype)
|
|
call filter(patterns, 'v:val !~# "/"')
|
|
if !empty(patterns)
|
|
let pattern = len(patterns) == 1 ? patterns[0] : '{'.join(patterns, ',').'}'
|
|
let dir = expand('%:p:h')
|
|
while isdirectory(dir) && dir !=# fnamemodify(dir, ':h')
|
|
for neighbor in split(glob(dir.'/'.pattern), "\n")
|
|
if neighbor !=# expand('%:p')
|
|
call extend(options, s:guess(readfile(neighbor, '', 1024)), 'keep')
|
|
endif
|
|
if s:apply_if_ready(options)
|
|
return
|
|
endif
|
|
endfor
|
|
let dir = fnamemodify(dir, ':h')
|
|
endwhile
|
|
endif
|
|
if has_key(options, 'shiftwidth')
|
|
return s:apply_if_ready(extend({'expandtab': 1}, options))
|
|
endif
|
|
endfunction
|
|
|
|
setglobal smarttab
|
|
|
|
if !exists('g:did_indent_on')
|
|
filetype indent on
|
|
endif
|
|
|
|
augroup sleuth
|
|
autocmd!
|
|
autocmd FileType * call s:detect()
|
|
augroup END
|
|
|
|
" vim:set et sw=2:
|