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Autoloading Cscope Database

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created February 11, 2011 · complexity basic · author Dorserg · version 7.0

By default, Cscope script adds cscope.out from Vim's current directory and from $CSCOPE_DB. However, if you start Vim from say ~/proj/src/a/b/c/, while cscope.out is at ~/proj/src/, that cscope.out won't be loaded automatically.

For ctags, there is a nice trick: with the command :set tags=tags;/ Vim will look for tags file everywhere starting from the current directory up to the root.

This tip provides the same "autoloading" functionality for Cscope. Just add the following to your vimrc:

function! LoadCscope()
  let db = findfile("cscope.out", ".;")
  if (!empty(db))
    let path = strpart(db, 0, match(db, "/cscope.out$"))
    set nocscopeverbose " suppress 'duplicate connection' error
    exe "cs add " . db . " " . path
    set cscopeverbose
au BufEnter /* call LoadCscope()

See alsoEdit


If somebody use gVim in the windows(like me use Winxp), a modified script for the _vimrc script maybe helpful as follow:

function LoadCscope()
	if (executable("cscope") && has("cscope"))
		let UpperPath = findfile("cscope.out", ".;")
		if (!empty(UpperPath))
			let path = strpart(UpperPath, 0, match(UpperPath, "cscope.out$") - 1)	
			if (!empty(path))
				let s:CurrentDir = getcwd()
				let direct = strpart(s:CurrentDir, 0, 2) 
				let s:FullPath = direct . path
				let s:AFullPath = globpath(s:FullPath, "cscope.out")
				let s:CscopeAddString = "cs add " . s:AFullPath . " " . s:FullPath 
				execute s:CscopeAddString 
command LoadCscope call LoadCscope()

The last statement "Command LoadCscope call LoadCscope()" means that we can use command :LoadCscope to call the function LoadCscope for convinence.

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