Move stdnse.generate_random_string to new rand.lua

nselib/stdnse.lua

@@ -30,7 +30,6 @@ local pcall = pcall
 
 local ceil = math.ceil
 local max = math.max
-local random = math.random
 
 local format = string.format;
 local rep = string.rep
@@ -227,38 +226,6 @@ function strsplit(pattern, text)
   return list;
 end
 
---- Generate a random string.
---
--- You can either provide your own charset or the function will use
--- a default one which is [A-Z].
--- @param len Length of the string we want to generate.
--- @param charset Charset that will be used to generate the string. String or table
--- @return A random string of length <code>len</code> consisting of
--- characters from <code>charset</code> if one was provided, otherwise
--- <code>charset</code> defaults to [A-Z] letters.
-function generate_random_string(len, charset)
-  local t = {}
-  local ascii_A = 65
-  local ascii_Z = 90
-  if charset then
-    if type(charset) == "string" then
-      for i=1,len do
-        local r = random(#charset)
-        t[i] = sub(charset, r, r)
-      end
-    else
-      for i=1,len do
-        t[i]=charset[random(#charset)]
-      end
-    end
-  else
-    for i=1,len do
-      t[i]=char(random(ascii_A,ascii_Z))
-    end
-  end
-  return concat(t)
-end
-
 --- Return a wrapper closure around a socket that buffers socket reads into
 -- chunks separated by a pattern.
 --