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Let nsedebug.tostr support other datatypes with tostring

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Instead of erroring, just use tostring to handle functions, userdata,
etc. This works for booleans and numbers, too, so no need for special
handling there.

Also switched from a string-concatenation model to a table-building one,
with a final concatenation. This could prevent catastrophic slowness
with representing large tables due to continuous reallocation of
strings.
This commit is contained in:
dmiller
2014-01-03 21:09:59 +00:00
parent 395a91b026
commit 54cea8be4f
1 changed files with 15 additions and 17 deletions
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32
nselib/nsedebug.lua
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@@ -12,6 +12,7 @@ local io = require "io"
local math = require "math"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
_ENV = stdnse.module("nsedebug", stdnse.seeall)
local EMPTY = {}; -- Empty constant table
@@ -25,41 +26,38 @@ local EMPTY = {}; -- Empty constant table
-- is 0.
--@return A string representation of a data, will be one or more full lines.
function tostr(data, indent)
local str = ""
local str
if(indent == nil) then
indent = 0
end
-- Check the type
if(type(data) == "nil") then
str = str .. (" "):rep(indent) .. "nil\n"
local typ = type(data)
if(typ == "nil" or typ == "number" or typ == "boolean" or typ == "function" or typ == "thread" or typ == "userdata") then
str = {(" "):rep(indent), tostring(data), "\n"}
elseif(type(data) == "string") then
str = str .. (" "):rep(indent) .. string.format("%q", data) .. "\n"
elseif(type(data) == "number") then
str = str .. (" "):rep(indent) .. data .. "\n"
elseif(type(data) == "boolean") then
if(data == true) then
str = str .. "true\n"
else
str = str .. "false\n"
end
str = {(" "):rep(indent), string.format("%q", data), "\n"}
elseif(type(data) == "table") then
local i, v
str = {}
for i, v in pairs(data) do
-- Check for a table in a table
str[#str+1] = (" "):rep(indent)
str[#str+1] = tostring(i)
if(type(v) == "table") then
str = str .. (" "):rep(indent) .. tostring(i) .. ":\n"
str = str .. tostr(v, indent + 2)
str[#str+1] = ":\n"
str[#str+1] = tostr(v, indent + 2)
else
str = str .. (" "):rep(indent) .. tostring(i) .. ": " .. tostr(v, 0)
str[#str+1] = ": "
str[#str+1] = tostr(v, 0)
end
end
else
stdnse.print_debug(1, "Error: unknown data type: %s", type(data))
end
return str
return table.concat(str)
end
--- Print out a string in hex, for debugging.