vim编辑器中cscope自动加载cscope.out文件的方法

方法一 ：vim 插件——autoload_cscope.vim

步骤：

插件下载地址：autoload_cscope.vim
下载之后，讲autoload_cscope.vim放到~/.vim/plugin目录下，如果没有该目录那就创建一个，重新打开终端即可。

优点：

有人维护（不过貌似很久没有更新了），稳定。

缺点：

只对*.c/*.h等代码文件有效，对一些辅助文件（例如Makefile）无效。

补充：

下面贴上代码，方便下载不成功时，可以直接复制到空文件中，并改名为autoload_cscope.vim，并按上述方法处理即可。

" Vim global plugin for autoloading cscope databases.
" Last Change: Wed Jan 26 10:28:52 Jerusalem Standard Time 2011
" Maintainer: Michael Conrad Tadpol Tilsra 
" Revision: 0.5

if exists("loaded_autoload_cscope")
	finish
endif
let loaded_autoload_cscope = 1

" requirements, you must have these enabled or this is useless.
if(  !has('cscope') || !has('modify_fname') )
  finish
endif

let s:save_cpo = &cpo
set cpo&vim

" If you set this to anything other than 1, the menu and macros will not be
" loaded.  Useful if you have your own that you like.  Or don't want my stuff
" clashing with any macros you've made.
if !exists("g:autocscope_menus")
  let g:autocscope_menus = 1
endif

"==
" windowdir
"  Gets the directory for the file in the current window
"  Or the current working dir if there isn't one for the window.
"  Use tr to allow that other OS paths, too
function s:windowdir()
  if winbufnr(0) == -1
    let unislash = getcwd()
  else 
    let unislash = fnamemodify(bufname(winbufnr(0)), ':p:h')
  endif
    return tr(unislash, '\', '/')
endfunc
"
"==
" Find_in_parent
" find the file argument and returns the path to it.
" Starting with the current working dir, it walks up the parent folders
" until it finds the file, or it hits the stop dir.
" If it doesn't find it, it returns "Nothing"
function s:Find_in_parent(fln,flsrt,flstp)
  let here = a:flsrt
  while ( strlen( here) > 0 )
    if filereadable( here . "/" . a:fln )
      return here
    endif
    let fr = match(here, "/[^/]*$")
    if fr == -1
      break
    endif
    let here = strpart(here, 0, fr)
    if here == a:flstp
      break
    endif
  endwhile
  return "Nothing"
endfunc
"
"==
" Cycle_macros_menus
"  if there are cscope connections, activate that stuff.
"  Else toss it out.
"  TODO Maybe I should move this into a seperate plugin?
let s:menus_loaded = 0
function s:Cycle_macros_menus()
  if g:autocscope_menus != 1
    return
  endif
  if cscope_connection()
    if s:menus_loaded == 1
      return
    endif
    let s:menus_loaded = 1
    set csto=0
    set cst
    silent! map  s :cs find s =expand("")
    silent! map  g :cs find g =expand("")
    silent! map  d :cs find d =expand("")
    silent! map  c :cs find c =expand("")
    silent! map  t :cs find t =expand("")
    silent! map  e :cs find e =expand("")
    silent! map  f :cs find f =expand("")
    silent! map  i :cs find i =expand("")
    if has("menu")
      nmenu &Cscope.Find.Symbols
        \ :cs find s =expand("")
      nmenu &Cscope.Find.Definitiong
        \ :cs find g =expand("")
      nmenu &Cscope.Find.Calledd
        \ :cs find d =expand("")
      nmenu &Cscope.Find.Callingc
        \ :cs find c =expand("")
      nmenu &Cscope.Find.Assignmentt
        \ :cs find t =expand("")
      nmenu &Cscope.Find.Egrepe
        \ :cs find e =expand("")
      nmenu &Cscope.Find.Filef
        \ :cs find f =expand("")
      nmenu &Cscope.Find.Includingi
        \ :cs find i =expand("")
"      nmenu &Cscope.Add :cs add 
"      nmenu &Cscope.Remove  :cs kill 
      nmenu &Cscope.Reset :cs reset
      nmenu &Cscope.Show :cs show
      " Need to figure out how to do the add/remove. May end up writing
      " some container functions.  Or tossing them out, since this is supposed
      " to all be automatic.
    endif
  else
    let s:menus_loaded = 0
    set nocst
    silent! unmap s
    silent! unmap g
    silent! unmap d
    silent! unmap c
    silent! unmap t
    silent! unmap e
    silent! unmap f
    silent! unmap i
    if has("menu")  " would rather see if the menu exists, then remove...
      silent! nunmenu Cscope
    endif
  endif
endfunc
"
"==
" Unload_csdb
"  drop cscope connections.
function s:Unload_csdb()
  if exists("b:csdbpath")
    if cscope_connection(3, "out", b:csdbpath)
      let save_csvb = &csverb
      set nocsverb
      exe "cs kill " . b:csdbpath
      set csverb
      let &csverb = save_csvb
    endif
  endif
endfunc
"
"==
" Cycle_csdb
"  cycle the loaded cscope db.
function s:Cycle_csdb()
    if exists("b:csdbpath")
      if cscope_connection(3, "out", b:csdbpath)
        return
        "it is already loaded. don't try to reload it.
      endif
    endif
    let newcsdbpath = s:Find_in_parent("cscope.out",s:windowdir(),$HOME)
"    echo "Found cscope.out at: " . newcsdbpath
"    echo "Windowdir: " . s:windowdir()
    if newcsdbpath != "Nothing"
      let b:csdbpath = newcsdbpath
      if !cscope_connection(3, "out", b:csdbpath)
        let save_csvb = &csverb
        set nocsverb
        exe "cs add " . b:csdbpath . "/cscope.out " . b:csdbpath
        set csverb
        let &csverb = save_csvb
      endif
      "
    else " No cscope database, undo things. (someone rm-ed it or somesuch)
      call s:Unload_csdb()
    endif
endfunc

" auto toggle the menu
augroup autoload_cscope
 au!
 au BufEnter *.[chly]  call Cycle_csdb() | call Cycle_macros_menus()
 au BufEnter *.cc      call Cycle_csdb() | call Cycle_macros_menus()
 au BufUnload *.[chly] call Unload_csdb() | call Cycle_macros_menus()
 au BufUnload *.cc     call Unload_csdb() | call Cycle_macros_menus()
augroup END

let &cpo = s:save_cpo

方法二 ：.vimrc脚本法

步骤：

在~/.vimrc文件中添加如下内容后，保存即可。

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" cscope 自动加载cscope.out文件
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
if has("cscope")  
    set csprg=/usr/bin/cscope  
    set csto=0 
    set cst  
    set csverb  
    set cspc=3 
    "add any database in current dir  
    if filereadable("cscope.out")  
        cs add cscope.out  
    "else search cscope.out elsewhere  
    else 
        let cscope_file=findfile("cscope.out",".;")  
        let cscope_pre=matchstr(cscope_file,".*/")  
        if !empty(cscope_file) && filereadable(cscope_file)  
            set nocsverb
            exe "cs add" cscope_file cscope_pre
            set csverb
        endif        
    endif  
endif

优点

对目标目录下所有文件有效。包括Makefile等辅助文件等。

缺点

目前没有发现缺点。