328 lines
7.6 KiB
Lua
328 lines
7.6 KiB
Lua
-- Check if given table is an array
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function is_array(x)
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if #t > 0 then
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return true
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end
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for k, v in pairs(x) do
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return false
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end
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return true
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end
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-- Get entry-point and filename from `entry-point:filename` path
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function parse_path(path)
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local index = string.find(path, ':')
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if index == nil then
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error("invalid path syntax (':' missing)")
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end
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return string.sub(path, 1, index-1), string.sub(path, index+1, -1)
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end
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function pack.is_installed(packid)
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return file.isfile(packid..":package.json")
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end
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function pack.data_file(packid, name)
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file.mkdirs("world:data/"..packid)
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return "world:data/"..packid.."/"..name
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end
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function pack.shared_file(packid, name)
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file.mkdirs("config:"..packid)
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return "config:"..packid.."/"..name
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end
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function timeit(iters, func, ...)
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local tm = time.uptime()
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for i=1,iters do
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func(...)
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end
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print("[time mcs]", (time.uptime()-tm) * 1000000)
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end
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----------------------------------------------
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function math.clamp(_in, low, high)
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return math.min(math.max(_in, low), high)
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end
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function math.rand(low, high)
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return low + (high - low) * math.random()
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end
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----------------------------------------------
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function table.copy(t)
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local copied = {}
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for k, v in pairs(t) do
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copied[k] = v
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end
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return copied
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end
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function table.count_pairs(t)
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local count = 0
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for k, v in pairs(t) do
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count = count + 1
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end
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return count
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end
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function table.random(t)
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return t[math.random(1, #t)]
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end
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----------------------------------------------
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local pattern_escape_replacements = {
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["("] = "%(",
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[")"] = "%)",
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["."] = "%.",
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["%"] = "%%",
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["+"] = "%+",
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["-"] = "%-",
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["*"] = "%*",
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["?"] = "%?",
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["["] = "%[",
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["]"] = "%]",
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["^"] = "%^",
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["$"] = "%$",
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["\0"] = "%z"
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}
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function string.pattern_safe(str)
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return string.gsub(str, ".", pattern_escape_replacements)
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end
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local string_sub = string.sub
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local string_find = string.find
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local string_len = string.len
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function string.explode(separator, str, withpattern)
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if (withpattern == nil) then withpattern = false end
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local ret = {}
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local current_pos = 1
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for i = 1, string_len(str) do
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local start_pos, end_pos = string_find(
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str, separator, current_pos, not withpattern)
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if (not start_pos) then break end
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ret[i] = string_sub(str, current_pos, start_pos - 1)
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current_pos = end_pos + 1
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end
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ret[#ret + 1] = string_sub(str, current_pos)
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return ret
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end
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function string.split(str, delimiter)
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return string.explode(delimiter, str)
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end
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function string.formatted_time(seconds, format)
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if (not seconds) then seconds = 0 end
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local hours = math.floor(seconds / 3600)
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local minutes = math.floor((seconds / 60) % 60)
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local millisecs = (seconds - math.floor(seconds)) * 1000
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seconds = math.floor(seconds % 60)
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if (format) then
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return string.format(format, minutes, seconds, millisecs)
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else
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return { h = hours, m = minutes, s = seconds, ms = millisecs }
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end
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end
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function string.replace(str, tofind, toreplace)
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local tbl = string.explode(tofind, str)
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if (tbl[1]) then return table.concat(tbl, toreplace) end
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return str
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end
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function string.trim(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^" .. char .. "*(.-)" .. char .. "*$") or s
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end
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function string.trim_right(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^(.-)" .. char .. "*$") or s
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end
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function string.trim_left(s, char)
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if char then char = string.pattern_safe(char) else char = "%s" end
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return string.match(s, "^" .. char .. "*(.+)$") or s
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end
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string.lower = utf8.lower
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string.upper = utf8.upper
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string.escape = utf8.escape
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local meta = getmetatable("")
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function meta:__index(key)
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local val = string[key]
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if (val ~= nil) then
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return val
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elseif (tonumber(key)) then
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return string.sub(self, key, key)
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end
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end
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function string.starts_with(str, start)
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return string.sub(str, 1, string.len(start)) == start
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end
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function string.ends_with(str, endStr)
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return endStr == "" or string.sub(str, -string.len(endStr)) == endStr
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end
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function table.has(t, x)
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for i,v in ipairs(t) do
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if v == x then
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return true
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end
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end
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return false
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end
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function table.index(t, x)
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for i,v in ipairs(t) do
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if v == x then
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return i
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end
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end
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return -1
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end
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function table.remove_value(t, x)
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local index = table.index(t, x)
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if index ~= -1 then
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table.remove(t, index)
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end
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end
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function table.tostring(t)
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local s = '['
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for i,v in ipairs(t) do
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s = s..tostring(v)
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if i < #t then
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s = s..', '
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end
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end
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return s..']'
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end
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function file.readlines(path)
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local str = file.read(path)
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local lines = {}
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for s in str:gmatch("[^\r\n]+") do
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table.insert(lines, s)
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end
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return lines
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end
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function debug.get_traceback(start)
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local frames = {}
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local n = 2 + (start or 0)
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while true do
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local info = debug.getinfo(n)
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if info then
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table.insert(frames, info)
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else
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return frames
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end
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n = n + 1
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end
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end
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package = {
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loaded = {}
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}
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local __cached_scripts = {}
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local __warnings_hidden = {}
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function on_deprecated_call(name, alternatives)
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if __warnings_hidden[name] then
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return
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end
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__warnings_hidden[name] = true
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events.emit("core:warning", "deprecated call", name, debug.get_traceback(2))
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if alternatives then
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debug.warning("deprecated function called ("..name.."), use "..
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alternatives.." instead\n"..debug.traceback())
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else
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debug.warning("deprecated function called ("..name..")\n"..debug.traceback())
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end
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end
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-- Load script with caching
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--
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-- path - script path `contentpack:filename`.
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-- Example `base:scripts/tests.lua`
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--
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-- nocache - ignore cached script, load anyway
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function __load_script(path, nocache)
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local packname, filename = parse_path(path)
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-- __cached_scripts used in condition because cached result may be nil
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if not nocache and __cached_scripts[path] ~= nil then
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return package.loaded[path]
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end
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if not file.isfile(path) then
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error("script '"..filename.."' not found in '"..packname.."'")
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end
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local script, err = load(file.read(path), path)
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if script == nil then
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error(err)
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end
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local result = script()
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if not nocache then
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__cached_scripts[path] = script
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package.loaded[path] = result
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end
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return result
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end
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function require(path)
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if not string.find(path, ':') then
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local prefix, _ = parse_path(debug.getinfo(2).source)
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return require(prefix..':'..path)
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end
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local prefix, file = parse_path(path)
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return __load_script(prefix..":modules/"..file..".lua")
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end
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function __scripts_cleanup()
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debug.log("cleaning scripts cache")
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for k, v in pairs(__cached_scripts) do
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local packname, _ = parse_path(k)
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if packname ~= "core" then
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debug.log("unloaded "..k)
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__cached_scripts[k] = nil
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package.loaded[k] = nil
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end
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end
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end
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function __vc__error(msg, frame)
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if events then
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events.emit("core:error", msg, debug.get_traceback(1))
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end
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return debug.traceback(msg, frame)
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end
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function __vc_warning(msg, detail, n)
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if events then
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events.emit(
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"core:warning", msg, detail, debug.get_traceback(1 + (n or 0)))
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end
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end
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