From 50461a952fa39baab2176545017296c0cdc21b44 Mon Sep 17 00:00:00 2001
From: Mathieu Maret <mmaret@genymobile.com>
Date: Wed, 14 Jan 2015 14:30:51 +0100
Subject: [PATCH] [vim] make autotags look for tag/cscope in parent dir until
 HOME or /

---
 .vim/plugin/autotags.vim    | 50 +++++++++++++++++++++++++++++--------
 .vim/plugin/cscope_plus.vim |  3 +++
 2 files changed, 42 insertions(+), 11 deletions(-)

diff --git a/.vim/plugin/autotags.vim b/.vim/plugin/autotags.vim
index 070253e..6c88af0 100644
--- a/.vim/plugin/autotags.vim
+++ b/.vim/plugin/autotags.vim
@@ -217,7 +217,7 @@ fun! s:AutotagsInit()
     while l:dir != "/"
         if getftype(g:autotagsdir . '/' . s:PathHash(l:dir)) == "dir"
             let s:autotags_subdir = g:autotagsdir . '/' . s:PathHash(l:dir)
-            "echomsg "autotags subdir exist: " . s:autotags_subdir
+            echomsg "autotags subdir exist: " . s:autotags_subdir
             break
         endif
         " get parent directory
@@ -239,20 +239,48 @@ fun! s:AutotagsIsC()
     endif
 endfun
 
+fun! GetLocalCscopeDb(pathname)
+	if !isdirectory(a:pathname) ||  a:pathname == $HOME || a:pathname == '/'
+		return
+	endif
+	let s:cscopefile = a:pathname."/cscope.out"
+	if filereadable(s:cscopefile)
+"		echo "Add cscope db for ".a:pathname
+		execute "cscope add ".s:cscopefile." ".a:pathname
+	endif
+	unlet s:cscopefile
+	call GetLocalCscopeDb(fnamemodify(a:pathname, ":h"))
+endfunction
+
+fun! GetLocalTags(pathname)
+	if !isdirectory(a:pathname) ||  a:pathname == $HOME || a:pathname == '/'
+		return
+	endif
+	let s:ctagsfile = a:pathname."/tags"
+	if filereadable(s:ctagsfile)
+"		echo "Add tags db for ".a:pathname
+        exe "set tags+=" . s:ctagsfile
+	endif
+	unlet s:ctagsfile
+	call GetLocalTags(fnamemodify(a:pathname, ":h"))
+endfunction
+
 fun! s:AutotagsSearchLoadTags()
     " search ctags in current tree
-    if filereadable(findfile("tags", ".;"))
-        let l:ctagsfile = findfile("tags", ".;")
-        exe "set tags+=" . l:ctagsfile
-        echomsg "found local ctags file: " . l:ctagsfile
-    endif
+    call GetLocalTags(expand("%:p:h"))
+"    if filereadable(findfile("tags", ".;"))
+"        let l:ctagsfile = findfile("tags", ".;")
+"        exe "set tags+=" . l:ctagsfile
+"        echomsg "found local ctags file: " . l:ctagsfile
+"    endif
 
+    call GetLocalCscopeDb(expand("%:p:h"))
     " search cscope db in current tree
-    if filereadable(findfile("cscope.out", ".;"))
-        let l:cscopedb = findfile("cscope.out", ".;")
-        exe "cs add " . l:cscopedb . " " . fnamemodify(l:cscopedb, ":p:h")
-        echomsg "found local cscopedb file: " . l:cscopedb
-    endif
+"    if filereadable(findfile("cscope.out", ".;"))
+"        let l:cscopedb = findfile("cscope.out", ".;")
+"        exe "cs add " . l:cscopedb . " " . fnamemodify(l:cscopedb, ":p:h")
+"        echomsg "found local cscopedb file: " . l:cscopedb
+"    endif
 endfun
 
 " remove stale tags for non-existing source directories
diff --git a/.vim/plugin/cscope_plus.vim b/.vim/plugin/cscope_plus.vim
index b182a9d..602a795 100644
--- a/.vim/plugin/cscope_plus.vim
+++ b/.vim/plugin/cscope_plus.vim
@@ -103,6 +103,9 @@ if has("cscope")
 	endfunction
 	command! GenerateCscopeDb :call GenerateCscopeDb()
 
+" Let autotags find all cscodepeDb
+"	LoadLocalCscopeDb
+
 ""	if has("cscope")
 ""	    map <F9>   :call GetCscopeDb(expand("%:p:h")) <CR><CR>
 ""	    map <S-F9> :call GenerateCscopeDb() <CR><CR>