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Don't strip leading 0s in stdnse.tobinary

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Every place this function is used, the result is padded with 0s anyway,
so may as well not strip them here. Didn't remove the padding code since
this could return only 4 chars, and most padding is to 8-char width.
This commit is contained in:
dmiller
2020-11-30 23:22:07 +00:00
parent 86deb87187
commit 6f57df02be
2 changed files with 8 additions and 6 deletions
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10
nselib/formulas.lua
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@@ -70,14 +70,16 @@ local function chi2(data, num_cats)
return x2
end
local function c_to_bin (c)
local n = stdnse.tobinary(c:byte())
return ("0"):rep(8-#n)..n
end
-- Split a string into a sequence of bit strings of the given length.
-- splitbits("abc", 5) --> {"01100", "00101", "10001", "00110"}
-- Any short final group is omitted.
local function splitbits(s, n)
local bits = s:gsub(".", function (c)
local n = stdnse.tobinary(c:byte())
return ("0"):rep(8-#n)..n
end)
local bits = s:gsub(".", c_to_bin)
local seq = {}
for i = 1, #bits - n, n do