On Tue, Dec 24, 2013 at 6:22 PM, Alexander Gladysh <aglad...@gmail.com> wrote:
> On Tue, Dec 24, 2013 at 5:39 AM, Hisham <h...@hisham.hm> wrote:
>> On 23 December 2013 20:22, Alexander Gladysh <aglad...@gmail.com> wrote:
>>> On Tue, Dec 24, 2013 at 2:01 AM, Alexander Gladysh <aglad...@gmail.com>
>>> wrote:
>>>> On Tue, Dec 24, 2013 at 1:34 AM, Alexander Gladysh <aglad...@gmail.com>
>>>> wrote:
>>>
>>>>> $ luarocks list | grep '^[^ ]' | tail -n +4 | xargs -n1 luarocks show
>>>>> | grep code.exports
>>>>>
>>>>> This command takes five seconds to execute on my box with 74 rocks
>>>>> installed. This is way to slow for my tool. :-(
>>>>
>>>> To compare, this hack takes 0.2s:
>>>>
>>>> $ (cd `luarocks path | grep LUA_PATH | cut -d "'" -f 2- | cut -d "?"
>>>> -f 1` && find . -wholename '*code/exports.lua' | cut -c 3-)
>>>
>>> 2.1.1 with porcelain is just as slow...
>>
>> The fastest method, I think, would be to scan the manifest file:
>>
>> lua -e "dofile('/your/lib/luarocks/rocks/manifest'); for k,_ in
>> pairs(modules) do if k:match("code.exports") then print(k) end end"
$ luajit -e 'dofile("/opt/local/share/luarocks/lib/luarocks/rocks/manifest");
for k, _ in pairs(modules) do if k:find("code.exports", nil, true)
then io.write(k, "\n") end end'
This command takes 0.03s on my machine. Much better!
Why is the LuaRocks invocation so slow then?
Alexander.
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