From: Ian Jackson <Ian.Jackson@eu.citrix.com>
Date: Mon, 28 Jun 2010 15:49:45 +0000 (+0100)
Subject: tools/python: sxp parser: show empty string
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~11873
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=f3fdbe735910281bb939ca8d650b02bcd160f15e;p=xen.git

tools/python: sxp parser: show empty string

This patch makes the sxp parser show empty string.

Test case:
 import sxp
 sxp.show(sxp.from_string('(a "")'))
 sxp.show(sxp.from_string("(a '')"))

Without this patch:
 (a )(a )
With this patch:
 (a '')(a '')

Signed-off-by: Zhigang Wang <zhigang.x.wang@oracle.com>
---

diff --git a/tools/python/xen/xend/sxp.py b/tools/python/xen/xend/sxp.py
index c31f8e4d21..c87270f070 100644
--- a/tools/python/xen/xend/sxp.py
+++ b/tools/python/xen/xend/sxp.py
@@ -365,6 +365,8 @@ class Parser:
 def atomp(sxpr):
     """Check if an sxpr is an atom.
     """
+    if sxpr == '':
+        return 0
     if sxpr.isalnum() or sxpr == '@':
         return 1
     for c in sxpr: