libs/core: remove various uses of global vars in luci.ip

diff --git a/libs/core/luasrc/ip.lua b/libs/core/luasrc/ip.lua
index c5148c22a4096e3f71f7f4a1d7b0980655cae031..60ca090135962eb24daf7c68ab3982475d2333b7 100644 (file)
--- a/libs/core/luasrc/ip.lua
+++ b/libs/core/luasrc/ip.lua
@@ -220,7 +220,7 @@ function IPv6(address, netmask)
        end
 
        local borderl = address:sub(1, 1) == ":" and 2 or 1
-       local borderh, zeroh, chunk, block
+       local borderh, zeroh, chunk, block, i
 
        if #address > 45 then return nil end
 
@@ -297,6 +297,7 @@ function Hex( hex, prefix, family, swap )
        local len  = __maxlen(family)
        local tmp  = ""
        local data = { }
+       local i
 
        for i = 1, (len/4) - #hex do tmp = tmp .. '0' end
 
@@ -403,6 +404,7 @@ end
 -- @see                        cidr.equal
 function cidr.lower( self, addr )
        assert( self[1] == addr[1], "Can't compare IPv4 and IPv6 addresses" )
+       local i
        for i = 1, #self[2] do
                if self[2][i] ~= addr[2][i] then
                        return self[2][i] < addr[2][i]
@@ -420,6 +422,7 @@ end
 -- @see                        cidr.equal
 function cidr.higher( self, addr )
        assert( self[1] == addr[1], "Can't compare IPv4 and IPv6 addresses" )
+       local i
        for i = 1, #self[2] do
                if self[2][i] ~= addr[2][i] then
                        return self[2][i] > addr[2][i]
@@ -437,6 +440,7 @@ end
 -- @see                        cidr.higher
 function cidr.equal( self, addr )
        assert( self[1] == addr[1], "Can't compare IPv4 and IPv6 addresses" )
+       local i
        for i = 1, #self[2] do
                if self[2][i] ~= addr[2][i] then
                        return false
@@ -460,6 +464,7 @@ function cidr.prefix( self, mask )
 
                if not obj then return nil end
 
+               local _, word
                for _, word in ipairs(obj[2]) do
                        if word == 0xFFFF then
                                prefix = prefix + 16
@@ -489,6 +494,7 @@ function cidr.network( self, bits )
        local data = { }
        bits = bits or self[3]
 
+       local i
        for i = 1, math.floor( bits / 16 ) do
                data[#data+1] = self[2][i]
        end
@@ -578,6 +584,7 @@ end
 -- @return                     CIDR representing the new address or nil on overflow error
 -- @see                                cidr.sub
 function cidr.add( self, amount, inplace )
+       local pos
        local data   = { unpack(self[2]) }
        local shorts = __array16( amount, self[1] )
 
@@ -609,6 +616,7 @@ end
 -- @return                     CIDR representing the new address or nil on underflow error
 -- @see                                cidr.add
 function cidr.sub( self, amount, inplace )
+       local pos
        local data   = { unpack(self[2]) }
        local shorts = __array16( amount, self[1] )
 
@@ -649,6 +657,7 @@ end
 -- @see                        cidr.minhost
 function cidr.maxhost( self )
        if self[3] <= __sublen(self[1]) then
+               local i
                local data   = { unpack(self[2]) }
                local offset = math.floor( self[3] / 16 ) + 1