Performance optimisations:

[project/luci.git] / libs / core / luasrc / util.lua

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index 177de43..5f9c609 100644 (file)
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -33,7 +33,6 @@ local string = require "string"
 local coroutine = require "coroutine"
 
 local getmetatable, setmetatable = getmetatable, setmetatable
-local getfenv, setfenv = getfenv, setfenv
 local rawget, rawset, unpack = rawget, rawset, unpack
 local tostring, type, assert = tostring, type, assert 
 local ipairs, pairs, loadstring = ipairs, pairs, loadstring
@@ -250,9 +249,9 @@ function split(str, pat, max, regex)
                local s, e = str:find(pat, c, not regex)
                max = max - 1
                if s and max < 0 then
-                       table.insert(t, str:sub(c))
+                       t[#t+1] = str:sub(c)
                else
-                       table.insert(t, str:sub(c, s and s - 1))
+                       t[#t+1] = str:sub(c, s and s - 1)
                end
                c = e and e + 1 or #str + 1
        until not s or max < 0
@@ -335,7 +334,7 @@ function combine(...)
        local result = {}
        for i, a in ipairs(arg) do
                for j, v in ipairs(a) do
-                       table.insert(result, v)
+                       result[#result+1] = v
                end
        end
        return result
@@ -372,7 +371,7 @@ function keys(t)
        local keys = { }
        if t then
                for k, _ in kspairs(t) do
-                       table.insert( keys, k )
+                       keys[#keys+1] = k
                end
        end
        return keys
@@ -569,7 +568,7 @@ function _sortiter( t, f )
        local keys = { }
 
        for k, v in pairs(t) do
-               table.insert( keys, k )
+               keys[#keys+1] = k
        end
 
        local _pos = 0
@@ -658,7 +657,7 @@ function execl(command)
        while true do
                line = pp:read()
                if (line == nil) then break end
-               table.insert(data, line)
+               data[#data+1] = line
        end
        pp:close()