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add comments to stdnse.tohex()

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This commit is contained in:
sven 2008-10-06 09:52:55 +00:00
parent 2dd98df5b9
commit 6057449ae0
1 changed files with 6 additions and 2 deletions
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8
nselib/stdnse.lua
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@ -158,6 +158,7 @@ end
--@return hexadecimal encoded string
function tohex( s, options )
options = options or {}
local separator = options.separator
local hex
if type( s ) == 'number' then
@ -168,16 +169,19 @@ function tohex( s, options )
error( "Type not supported in tohex(): " .. type(s), 2 )
end
if options.separator then
-- format hex if we got a separator
if separator then
local group = options.group or 2
local fmt_table = {}
-- split hex in group-size chunks
for i=#hex,1,-group do
-- table index must be consecutive otherwise table.concat won't work
fmt_table[ceil(i/group)] = hex:sub(max(i-group+1,1),i)
end
hex = concat( fmt_table, options.separator )
hex = concat( fmt_table, separator )
end
return hex
end