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Reduce verbosity and improve bin wrapper debugging.

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This commit is contained in:
batrick
2016-07-13 01:46:27 +00:00
parent a8abc95712
commit 1b5f633e2a
1 changed files with 5 additions and 3 deletions
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8
nselib/bin.lua
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@@ -43,6 +43,7 @@
-- @name bin
local debug2 = require "stdnse".debug2
local debug3 = require "stdnse".debug3
local assert = assert
local error = error
@@ -89,6 +90,7 @@ end
-- @param ... The values to pack.
-- @return String containing packed data.
function _ENV.pack (format, ...)
debug3("bin.pack: format = '%s'", format);
format = "!1="..format -- 1 byte alignment
local endianness = "="
local i, args = 1, pack(...)
@@ -174,7 +176,7 @@ function _ENV.pack (format, ...)
end
end
format = format:gsub("([%a=<>])(%d*)", translate)
debug2("format = '%s'", format)
debug3("bin.pack: string.pack(format = '%s', ...)", format)
return format.pack(format, unpack(args)) -- don't use method syntax for better error message
end
@@ -236,7 +238,7 @@ end
-- @return Position in the data string where unpacking stopped.
-- @return All unpacked values.
function _ENV.unpack (format, data, init)
debug2("format = '%s'", format);
debug3("bin.unpack: format = '%s'", format);
format = "!1="..format -- 1 byte alignment
if type(init) == "number" and init <= 0 then init = 1 end
local endianness = "="
@@ -244,7 +246,6 @@ function _ENV.unpack (format, data, init)
local i = 0
local function translate (o, n)
n = #n == 0 and 1 or tointeger(n)
debug2("%d: %s:%d", i, o, n);
if o == "=" then
endianness = "="
@@ -299,6 +300,7 @@ function _ENV.unpack (format, data, init)
end
end
format = format:gsub("([%a=<>])(%d*)", translate)
debug3("bin.unpack: string.unpack(format = '%s', ...)", format)
return unpacker(fixer, pcall(format.unpack, format, data, init))
end