split some function into common.vim'

vimrcs/common.vim

@@ -0,0 +1,27 @@
+" Get the file path of the current citc client.
+" If it is not a citc client, return the entire path.
+function! GetSmartFilePath()
+  let path = expand('%:p:h')
+  " If in google3 path, display the client name and the absolute path
+  if matchstr(path, 'google3')  == 'google3'
+    let output = ''
+    let subs = split(path, '/')
+    let add_to_output = 0
+    let prev_s = ''
+    for s in subs
+        if add_to_output == 1
+            let output .= '/'
+            let output .= s
+        endif
+        if s == 'google3' 
+            let output .= prev_s
+            let output .= ':'
+            let add_to_output = 1
+        endif 
+        let prev_s = s
+    endfor
+    return output
+  else
+    return path
+  endif
+endfunction