Currencies.lua

_addon.name = 'Currencies'
_addon.author = 'Ivaar'
_addon.version = '0.0.0.3'
_addon.commands = {'currencies','curr'}

require('lists')
require('logger')
packets = require('packets')

local log_results
local player_name = windower.ffxi.get_info().logged_in and windower.ffxi.get_player().name
local check = {}
local requests = {
    [0x113] = packets.new('outgoing', 0x10F),
    [0x118] = packets.new('outgoing', 0x115),
}

function comma_value(n) -- credit http://richard.warburton.it
    local left,num,right = string.match(n,'^([^%d]*%d)(%d*)(.-)$')
    return left..(num:reverse():gsub('(%d%d%d)','%1,'):reverse())..right
end

windower.register_event('incoming chunk', function(id, data)
    if check[id] then
        local packet = packets.parse('incoming', data)

        for field in check[id]:it() do
            local msg = '%s: %s (%s)':format(player_name, field, comma_value(packet[field]))

            if log_results then
                log(msg)
            else
                windower.send_ipc_message(msg)
            end
        end

        check[id] = nil
    end
end)

local function search_fields(terms)
    terms = terms:split('|'):map(string.gsub-{'[%s%p]', '.*'} .. string.lower)

    if windower.ffxi.get_info().logged_in then
        check = {}
        local results

        for id, packet in pairs(requests) do
            local fields = packets.fields('incoming', id)

            for field in fields:it() do
                if field.type ~= 'data' then
                    local str = field.label:gsub('[%s%p]', ''):lower()

                    for term in terms:it() do
                        if str:find(term) then
                            check[id] = check[id] or L{}
                            check[id]:append(field.label)
                        end
                    end
                end
            end

            if check[id] then
                packets.inject(packet)
                results = true
            end
        end
        return results
    end
end

windower.register_event('addon command', function(...)
    local commands = T{...}
    commands[1] = commands[1] and commands[1]:lower() or 'help'

    if commands[1] == 'help' then
        log('Command: //curr [all] <search term>')
        log(' Use | to seperate search terms')
        log(' e.g. //curr seals //curr beads|silt')
        return
    end

    local send_all

    if commands[1] == 'all' then
        commands:remove(1)
        send_all = true
    end

    local term = commands:concat(' ')

    log_results = true

    if not search_fields(term) then
        error('No currencies matching: %s':format(term))
        return
    end

    if not send_all then return end

    windower.send_ipc_message('check %s':format(term))
end)

windower.register_event('ipc message', function(msg)
    if msg:sub(1, 5) == 'check' then
        log_results = false
        search_fields(msg:sub(7))
    elseif log_results then
        log(msg)
    end
end)

windower.register_event('login', function(name)
    player_name = name
end)

Does this show you how much of a currency you have? How does it work, was looking for something that you can type a currency real quick and it tells you how much you have