Remove: tags
This commit is contained in:
Coder12a
parent
33f1f5411b
commit
1b98c81e55
579
colddb.lua
579
colddb.lua
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@ -1,7 +1,6 @@
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colddb = {}
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function colddb.Colddb(dir)
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local dir = string.format("%s/%s/", minetest.get_worldpath(), dir)
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if not minetest.mkdir(dir) then
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error(string.format("%s is not a directory.", dir))
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end
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@ -9,7 +8,6 @@ function colddb.Colddb(dir)
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local self = {}
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local directory = dir
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local tags = {}
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local mem_pool = {}
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local mem_pool_del = {}
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local indexes_pool = {}
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@ -21,17 +19,12 @@ function colddb.Colddb(dir)
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async.priority(150, 250)
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-- make tables weak so the garbage-collector will remove unused data
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setmetatable(tags, {__mode = "kv"})
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setmetatable(mem_pool, {__mode = "kv"})
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setmetatable(mem_pool_del, {__mode = "kv"})
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setmetatable(indexes_pool, {__mode = "kv"})
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local function file_exists(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local f = io.open(string.format("%s%s%s.cold", directory, t, name), "r")
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local function file_exists(name)
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local f = io.open(string.format("%s%s.cold", directory, name), "r")
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if f ~= nil then
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io.close(f)
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return true
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@ -41,214 +34,18 @@ function colddb.Colddb(dir)
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return false
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end
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local function delete_lines_func_begin(args)
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local f = io.open(args.copyfile, "w")
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if f then
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args.file = f
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args.removedlist = {}
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return args
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end
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return false
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end
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local function delete_lines_func_i(line, i, args)
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local f = args.file
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local om = indexes_pool[args.cs]
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if om and not om.deleted_items[line] then
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f:write(string.format("\n%s", line))
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else
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args.count = args.count - 1
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args.removedlist[line] = true
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end
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end
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local function delete_lines_func_end(args)
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local cs = args.cs
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local index = indexes_pool[cs]
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if index and index.file then
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index.file:close()
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index.file = nil
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args.file:seek("set")
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args.file:write(string.format("%i", args.count))
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args.file:close()
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if args.count < 1 then
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os.remove(args.oldfile)
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os.remove(args.copyfile)
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else
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os.remove(args.oldfile)
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os.rename(args.copyfile, args.oldfile)
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end
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local pool = indexes_pool[cs]
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for i, l in pairs(args.removedlist) do
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pool.deleted_items[i] = nil
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end
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pool.deleting = false
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indexes_pool[cs] = pool
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end
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args = nil
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end
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local function iterate(func_on_iterate, end_func, count, cs, args)
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local f = indexes_pool[cs]
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local fl = f.file
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async.iterate(1, count, function(i)
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local line = fl:read("*l")
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if args.do_not_skip_removed_items or not f.deleted_items[line] then
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local ar = func_on_iterate(line, i, args)
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if ar ~= nil then
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args = ar
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return args
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end
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end
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end, function()
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if end_func then
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end_func(args)
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end
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local iterate_queue = iterate_queue[cs]
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if iterate_queue and iterate_queue[1] then
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local copy = iterate_queue[1]
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f = indexes_pool[cs]
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if not f or not f.file then
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self.open_index_table(copy.tag_name)
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f = indexes_pool[cs]
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end
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if copy.begin_func then
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local a = copy.begin_func(copy.args)
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if a and type(a) == "table" then
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copy.args = a
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end
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end
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minetest.after(0, iterate, copy.func_on_iterate, copy.end_func, copy.count, copy.cs, copy.args)
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table.remove(iterate_queue[cs], 1)
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return false
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else
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fl:close()
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iterate_queue[cs] = nil
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end
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indexes_pool[cs].iterating = false
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return false
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end)
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end
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local function load_into_mem(name, _table, tag_name)
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local function load_into_mem(name, _table)
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if add_to_mem_pool then
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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mem_pool[cs] = {mem = _table}
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mem_pool[name] = {mem = _table}
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end
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end
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local function _remove_tag(delete_path, prev_dp)
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local pc = path_count[delete_path]
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if pc and pc > 0 then
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minetest.after(1.5, _remove_tag, delete_path)
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return
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elseif pc and pc < 1 then
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mem_pool = {}
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mem_pool_del = {}
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os.remove(delete_path)
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path_count[delete_path] = nil
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return
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elseif not pc then
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path_count[delete_path] = 0
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end
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local list = minetest.get_dir_list(delete_path)
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async.foreach(list, function(k, v)
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v = string.format("%s/%s", delete_path, v)
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local err = os.remove(v)
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if err == nil then
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minetest.after(0, _remove_tag, v, delete_path)
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path_count[delete_path] = path_count[delete_path] + 1
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end
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end, function()
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if prev_dp then
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path_count[prev_dp] = path_count[prev_dp] - 1
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end
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if pc > 0 then
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minetest.after(1.5, _remove_tag, delete_path)
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else
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mem_pool = {}
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mem_pool_del = {}
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os.remove(delete_path)
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path_count[delete_path] = nil
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end
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end)
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self.exists = function(name)
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return file_exists(name)
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end
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self.exists = function(name, tag_name)
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return file_exists(name, tag_name)
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end
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self.add_tag = function(name, tag, no_new_path)
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local t = ""
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if not tags[name] then
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tags[name] = ""
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end
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if type(tag) == "table" then
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for key, value in pairs(tag) do
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t = string.format("%s%s/", t, value)
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end
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else
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t = string.format("%s/", tag)
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end
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tags[name] = string.format("%s%s", tags[name], t)
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if no_new_path then
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return
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end
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local test_path = string.format("%s%s", directory, tags[name])
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if not minetest.mkdir(test_path) then
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error(string.format("%s is not a directory.", test_path))
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end
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end
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self.get_tag = function(name)
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if not name then
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return ""
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end
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local tag = tags[name]
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if tag then
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return tag
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end
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return ""
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end
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self.get_or_add_tag = function(name, tag, no_new_path)
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if not tags[name] then
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self.add_tag(name, tag, no_new_path)
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end
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return name
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end
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self.remove_tag = function(name)
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if not name then
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local delete_path = directory
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local wc = delete_path:len()
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delete_path = delete_path:sub(0, wc-1)
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return
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end
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if tags[name] then
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local delete_path = string.format("%s%s", directory, tags[name])
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local wc = delete_path:len()
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delete_path = delete_path:sub(0, wc-1)
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tags[name] = nil
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local err = os.remove(delete_path)
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if err == nil then
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minetest.after(0.1, _remove_tag, delete_path)
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end
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end
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end
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local function delete_file(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local text = string.format("%s%s%s.cold", directory, t, name)
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local function delete_file(name)
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local text = string.format("%s%s.cold", directory, name)
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local err, msg = os.remove(text)
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if err == nil then
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@ -256,12 +53,8 @@ function colddb.Colddb(dir)
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end
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end
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local function load_table(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local f = io.open(string.format("%s%s%s.cold", directory, t, name), "r")
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local function load_table(name)
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local f = io.open(string.format("%s%s.cold", directory, name), "r")
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if f then
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local data = minetest.deserialize(f:read("*a"))
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f:close()
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@ -270,299 +63,67 @@ function colddb.Colddb(dir)
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return nil
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end
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local function save_table(name, _table, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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minetest.log(string.format("%s%s%s.cold", directory, t, name))
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return minetest.safe_file_write(string.format("%s%s%s.cold", directory, t, name), minetest.serialize(_table))
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local function save_table(name, _table)
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minetest.log(string.format("%s%s.cold", directory, name))
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return minetest.safe_file_write(string.format("%s%s.cold", directory, name), minetest.serialize(_table))
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end
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local function save_key(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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return minetest.safe_file_write(string.format("%s%s%s.cold", directory, t, name), "")
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local function save_key(name)
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return minetest.safe_file_write(string.format("%s%s.cold", directory, name), "")
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end
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local function load_key(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local f = io.open(string.format("%s%s%s.cold", directory, t, name), "r")
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local function load_key(name)
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local f = io.open(string.format("%s%s.cold", directory, name), "r")
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if f then
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f:close()
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return true
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end
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return false
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end
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self.delete_entries = function(name ,_lines, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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local f = indexes_pool[cs]
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local k = type(_lines)
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if k == "string" then
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f.deleted_items[_lines] = true
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else
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for i, l in pairs(_lines) do
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f.deleted_items[i] = true
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end
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end
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if not f.deleting then
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indexes_pool[cs].deleting = false
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end
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if f and f.file and not f.deleting then
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indexes_pool[cs].deleting = true
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if f.needs_flushing == true then
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f.file:flush()
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indexes_pool[cs].needs_flushing = false
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end
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local oldfile = string.format("%s%s%s.cold", directory, t, name)
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local copyfile = string.format("%s%s%s.cold.replacer", directory, t, name)
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local args = {cs = cs, oldfile = oldfile, copyfile = copyfile, do_not_skip_removed_items = true}
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indexes_pool[cs] = f
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iterate_index_table(delete_entries_func_begin, delete_entries_func_i, delete_entries_func_end, args, tag_name)
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end
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end
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self.open_entry_file = function(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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local fs = indexes_pool[cs]
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if not fs then
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local p = string.format("%s%s%s.cold", directory, t, name)
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if not file_exists(name,tag_name) then
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local f = io.open(p, "w")
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if f then
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f:seek("set")
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f:write("0")
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f:close()
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end
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end
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local f = io.open(p, "r+")
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if f then
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indexes_pool[cs] = {file = f, needs_flushing = false, deleted_items = {}, iterating = false}
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return f
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end
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return nil
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else
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return fs.file
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end
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return nil
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end
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self.append_entry_file = function(name, key, op, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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local f = indexes_pool[cs]
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local k = type(key)
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if f and f.file and k == "string" then
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local fl = f.file
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if f.needs_flushing == true then
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fl:flush()
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f.needs_flushing = false
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end
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indexes_pool[cs].needs_flushing = true
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fl:seek("end")
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fl:write(string.format("\n%s", key))
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fl:seek("set")
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local count = tonumber(fl:read("*l"))
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count = count + 1
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fl:seek("set")
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fl:write(string.format("%i", count))
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fl:close()
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elseif f and f.file then
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local fl = f.file
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if f.needs_flushing == true then
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fl:flush()
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f.needs_flushing = false
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end
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indexes_pool[cs].needs_flushing = true
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local c = 0
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if op and op == "key" then
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for i in pairs(key) do
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fl:seek("end")
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fl:write(string.format("\n%s", i))
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c = c + 1
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end
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elseif not op or op == "value" then
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for i, j in pairs(key) do
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fl:seek("end")
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fl:write(string.format("\n%s", j))
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c = c + 1
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end
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end
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fl:seek("set")
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local count = tonumber(fl:read("*l"))
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count = count + c
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fl:seek("set")
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fl:write(string.format("%i", count))
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fl:close()
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else
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return false
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end
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end
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self.get_entry_file_count = function(name, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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local f = indexes_pool[cs]
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if not f or not f.file then
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self.open_entry_file(name, tag_name)
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f = indexes_pool[cs]
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end
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if f and f.file then
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local fl = f.file
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if f.needs_flushing == true then
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fl:flush()
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f.needs_flushing = false
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end
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fl:seek("set")
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local count = tonumber(fl:read("*l"))
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fl:close()
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return count
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end
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return nil
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end
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self.iterate_entry_file = function(name, begin_func, func_on_iterate, end_func, args, tag_name)
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local t = ""
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if tag_name then
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t = self.get_tag(tag_name)
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end
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local cs = string.format("%s%s", t, name)
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local f = indexes_pool[cs]
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if not f or not f.file then
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self.open_entry_file(tag_name)
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f = indexes_pool[cs]
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end
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if f and f.file and indexes_pool[cs].iterating == false then
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indexes_pool[cs].iterating = true
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local fl = f.file
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if f.needs_flushing == true then
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fl:flush()
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f.needs_flushing = false
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end
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-- Get count
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fl:seek("set")
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local c = tonumber(fl:read("*l"))
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if not args then
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args = {}
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end
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args.count = c
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-- Run the begin function
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if begin_func then
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local a = begin_func(args)
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if a and type(a) == "table" then
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args = a
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end
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end
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if c < 1 then
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-- If theres nothing to index then return
|
||||
end_func(args)
|
||||
indexes_pool[cs].iterating = false
|
||||
return false
|
||||
end
|
||||
-- Start iterating the index table
|
||||
iterate(func_on_iterate, end_func, c, cs, args)
|
||||
elseif f and f.file then
|
||||
local fl = f.file
|
||||
-- If its iterating some other function then add this one to the queue list
|
||||
fl:seek("set")
|
||||
local c = tonumber(fl:read("*l"))
|
||||
if c < 1 then
|
||||
-- If theres nothing to index then return
|
||||
return false
|
||||
end
|
||||
if not iterate_queue[cs] then
|
||||
iterate_queue[cs] = {}
|
||||
end
|
||||
local _table = {begin_func = begin_func, func_on_iterate = func_on_iterate, end_func = end_func, count = c, cs = cs, tag_name = tag_name, args = args}
|
||||
table.insert(iterate_queue[cs], _table)
|
||||
end
|
||||
|
||||
self.set_mem = function(name, _table)
|
||||
load_into_mem(name, _table)
|
||||
mem_pool_del[name] = nil
|
||||
end
|
||||
|
||||
self.set_mem = function(name, _table, tag_name)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
load_into_mem(name, _table, tag_name)
|
||||
local cs = string.format("%s%s", t, name)
|
||||
mem_pool_del[cs] = nil
|
||||
end
|
||||
|
||||
self.save_mem = function(name, tag_name)
|
||||
local t = ""
|
||||
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
|
||||
local cs = string.format("%s%s", t, name)
|
||||
|
||||
self.save_mem = function(name)
|
||||
async.queue_task(function()
|
||||
if mem_pool[cs] ~= nil then
|
||||
save_table(name, mem_pool[cs].mem, tag_name)
|
||||
if mem_pool[name] ~= nil then
|
||||
save_table(name, mem_pool[name].mem)
|
||||
end
|
||||
end)
|
||||
|
||||
mem_pool_del[cs] = nil
|
||||
mem_pool_del[name] = nil
|
||||
end
|
||||
|
||||
self.clear_mem = function(name)
|
||||
mem_pool[name] = nil
|
||||
mem_pool_del[name] = nil
|
||||
end
|
||||
|
||||
self.set = function(name, _table, tag_name)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
self.set = function(name, _table)
|
||||
async.queue_task(function()
|
||||
save_table(name, _table, tag_name)
|
||||
save_table(name, _table)
|
||||
end)
|
||||
if add_to_mem_pool then
|
||||
load_into_mem(name, _table, tag_name)
|
||||
load_into_mem(name, _table)
|
||||
end
|
||||
local cs = string.format("%s%s", t, name)
|
||||
mem_pool_del[cs] = nil
|
||||
|
||||
mem_pool_del[name] = nil
|
||||
end
|
||||
|
||||
self.set_key = function(name, tag_name)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
self.set_key = function(name)
|
||||
async.queue_task(function()
|
||||
save_key(name, tag_name)
|
||||
save_key(name)
|
||||
end)
|
||||
if add_to_mem_pool then
|
||||
load_into_mem(name, "", tag_name)
|
||||
load_into_mem(name, "")
|
||||
end
|
||||
local cs = string.format("%s%s", t, name)
|
||||
mem_pool_del[cs] = nil
|
||||
mem_pool_del[name] = nil
|
||||
end
|
||||
|
||||
self.get = function(name, tag_name, callback)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
local cs = string.format("%s%s", t, name)
|
||||
if mem_pool_del[cs] then
|
||||
self.get = function(name, callback)
|
||||
if mem_pool_del[name] then
|
||||
if callback then
|
||||
callback(nil)
|
||||
end
|
||||
|
|
@ -570,42 +131,37 @@ function colddb.Colddb(dir)
|
|||
end
|
||||
if callback then
|
||||
async.queue_task(function()
|
||||
local pm = mem_pool[cs]
|
||||
local pm = mem_pool[name]
|
||||
if pm then
|
||||
return pm.mem
|
||||
else
|
||||
local _table = load_table(name, tag_name)
|
||||
local _table = load_table(name)
|
||||
if _table then
|
||||
load_into_mem(name, _table, tag_name)
|
||||
load_into_mem(name, _table)
|
||||
return _table
|
||||
end
|
||||
end
|
||||
mem_pool_del[cs] = true
|
||||
mem_pool_del[name] = true
|
||||
return nil
|
||||
end,callback)
|
||||
else
|
||||
local pm = mem_pool[cs]
|
||||
local pm = mem_pool[name]
|
||||
if pm then
|
||||
return pm.mem
|
||||
else
|
||||
local _table = load_table(name, tag_name)
|
||||
local _table = load_table(name)
|
||||
if _table then
|
||||
load_into_mem(name, _table, tag_name)
|
||||
load_into_mem(name, _table)
|
||||
return _table
|
||||
end
|
||||
end
|
||||
mem_pool_del[cs] = true
|
||||
mem_pool_del[name] = true
|
||||
return nil
|
||||
end
|
||||
end
|
||||
|
||||
self.get_key = function(name, tag_name, callback)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
local cs = string.format("%s%s", t, name)
|
||||
if mem_pool_del[cs] then
|
||||
self.get_key = function(name, callback)
|
||||
if mem_pool_del[name] then
|
||||
if callback then
|
||||
callback(false)
|
||||
end
|
||||
|
|
@ -613,49 +169,40 @@ function colddb.Colddb(dir)
|
|||
end
|
||||
if callback then
|
||||
async.queue_task(function()
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
local pm = mem_pool[cs]
|
||||
local pm = mem_pool[name]
|
||||
if pm then
|
||||
return true
|
||||
else
|
||||
local bool = load_key(name, tag_name)
|
||||
local bool = load_key(name)
|
||||
if bool then
|
||||
load_into_mem(name, bool, tag_name)
|
||||
load_into_mem(name, bool)
|
||||
return bool
|
||||
end
|
||||
end
|
||||
mem_pool_del[cs] = true
|
||||
mem_pool_del[name] = true
|
||||
return nil
|
||||
end,callback)
|
||||
else
|
||||
local pm = mem_pool[cs]
|
||||
local pm = mem_pool[name]
|
||||
if pm then
|
||||
return true
|
||||
else
|
||||
local bool = load_key(name, tag_name)
|
||||
local bool = load_key(name)
|
||||
if bool then
|
||||
load_into_mem(name, bool, tag_name)
|
||||
load_into_mem(name, bool)
|
||||
return bool
|
||||
end
|
||||
end
|
||||
mem_pool_del[cs] = true
|
||||
mem_pool_del[name] = true
|
||||
return nil
|
||||
end
|
||||
end
|
||||
|
||||
self.remove = function(name, tag_name)
|
||||
local t = ""
|
||||
if tag_name then
|
||||
t = self.get_tag(tag_name)
|
||||
end
|
||||
local cs = string.format("%s%s", t, name)
|
||||
mem_pool[cs] = nil
|
||||
mem_pool_del[cs] = true
|
||||
self.remove = function(name)
|
||||
mem_pool[name] = nil
|
||||
mem_pool_del[name] = true
|
||||
async.queue_task(function()
|
||||
delete_file(name, tag_name)
|
||||
delete_file(name)
|
||||
end)
|
||||
end
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user