From: Tobias Ulmer <tu@emlix.com>
Date: Fri, 29 Jun 2012 19:39:13 +0000 (+0200)
Subject: Introduce e2lib.shquote() to quote strings that are passed to a shell
X-Git-Tag: e2factory-2.3.12rc1~34
X-Git-Url: https://git.e2factory.org/?a=commitdiff_plain;h=78ea8fbf82378443dd5610f483afa2a55f3fe75e;p=e2factory.git

Introduce e2lib.shquote() to quote strings that are passed to a shell

Signed-off-by: Tobias Ulmer <tu@emlix.com>
---

diff --git a/generic/e2lib.lua b/generic/e2lib.lua
index 68b575b..cd91d36 100644
--- a/generic/e2lib.lua
+++ b/generic/e2lib.lua
@@ -681,6 +681,16 @@ function chomp(str, chr)
   end
 end
 
+--- quotes a string so it can be safely passed to a shell
+-- @param str string to quote
+-- @return quoted string
+function shquote(str)
+  assert(type(str) == "string")
+  e2lib.logf(4, "e2lib.shquote(%s)", str)
+  str = string.gsub(str, "'", "'\"'\"'")
+  return "'"..str.."'"
+end
+
 -- determines the type of an archive
 -- say "z" for gzip, "j" for bzip2, "" for tar archive
 -- nil is returned for unknown data