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-rw-r--r--script/src/utility.lua234
1 files changed, 234 insertions, 0 deletions
diff --git a/script/src/utility.lua b/script/src/utility.lua
new file mode 100644
index 00000000..d7fc9dde
--- /dev/null
+++ b/script/src/utility.lua
@@ -0,0 +1,234 @@
+local fs = require 'bee.filesystem'
+
+local table_sort = table.sort
+local stringRep = string.rep
+local type = type
+local pairs = pairs
+local ipairs = ipairs
+local math_type = math.type
+local next = next
+local rawset = rawset
+local move = table.move
+local setmetatable = setmetatable
+local tableSort = table.sort
+local mathType = math.type
+
+local function formatNumber(n)
+ local str = ('%.10f'):format(n)
+ str = str:gsub('%.?0*$', '')
+ return str
+end
+
+local TAB = setmetatable({}, { __index = function (self, n)
+ self[n] = stringRep('\t', n)
+ return self[n]
+end})
+
+local RESERVED = {
+ ['and'] = true,
+ ['break'] = true,
+ ['do'] = true,
+ ['else'] = true,
+ ['elseif'] = true,
+ ['end'] = true,
+ ['false'] = true,
+ ['for'] = true,
+ ['function'] = true,
+ ['goto'] = true,
+ ['if'] = true,
+ ['in'] = true,
+ ['local'] = true,
+ ['nil'] = true,
+ ['not'] = true,
+ ['or'] = true,
+ ['repeat'] = true,
+ ['return'] = true,
+ ['then'] = true,
+ ['true'] = true,
+ ['until'] = true,
+ ['while'] = true,
+}
+
+function table.dump(tbl)
+ if type(tbl) ~= 'table' then
+ return ('%q'):format(tbl)
+ end
+ local lines = {}
+ local mark = {}
+ lines[#lines+1] = '{'
+ local function unpack(tbl, tab)
+ if mark[tbl] and mark[tbl] > 0 then
+ lines[#lines+1] = TAB[tab+1] .. '"<Loop>"'
+ return
+ end
+ if #lines > 10000 then
+ lines[#lines+1] = TAB[tab+1] .. '"<Large>"'
+ return
+ end
+ mark[tbl] = (mark[tbl] or 0) + 1
+ local keys = {}
+ local keymap = {}
+ local integerFormat = '[%d]'
+ if #tbl >= 10 then
+ local width = math.log(#tbl, 10)
+ integerFormat = ('[%%0%dd]'):format(math.ceil(width))
+ end
+ for key in pairs(tbl) do
+ if type(key) == 'string' then
+ if not key:match('^[%a_][%w_]*$')
+ or #key >= 32
+ or RESERVED[key]
+ then
+ keymap[key] = ('[%q]'):format(key)
+ else
+ keymap[key] = key
+ end
+ elseif mathType(key) == 'integer' then
+ keymap[key] = integerFormat:format(key)
+ else
+ keymap[key] = ('["<%s>"]'):format(key)
+ end
+ keys[#keys+1] = key
+ end
+ local mt = getmetatable(tbl)
+ if not mt or not mt.__pairs then
+ tableSort(keys, function (a, b)
+ return keymap[a] < keymap[b]
+ end)
+ end
+ for _, key in ipairs(keys) do
+ local value = tbl[key]
+ local tp = type(value)
+ if tp == 'table' then
+ lines[#lines+1] = ('%s%s = {'):format(TAB[tab+1], keymap[key])
+ unpack(value, tab+1)
+ lines[#lines+1] = ('%s},'):format(TAB[tab+1])
+ elseif tp == 'string' or tp == 'boolean' then
+ lines[#lines+1] = ('%s%s = %q,'):format(TAB[tab+1], keymap[key], value)
+ elseif tp == 'number' then
+ lines[#lines+1] = ('%s%s = %s,'):format(TAB[tab+1], keymap[key], formatNumber(value))
+ elseif tp == 'nil' then
+ else
+ lines[#lines+1] = ('%s%s = %s,'):format(TAB[tab+1], keymap[key], tostring(value))
+ end
+ end
+ mark[tbl] = mark[tbl] - 1
+ end
+ unpack(tbl, 0)
+ lines[#lines+1] = '}'
+ return table.concat(lines, '\r\n')
+end
+
+local function sort_table(tbl)
+ if not tbl then
+ tbl = {}
+ end
+ local mt = {}
+ local keys = {}
+ local mark = {}
+ local n = 0
+ for key in next, tbl do
+ n=n+1;keys[n] = key
+ mark[key] = true
+ end
+ table_sort(keys)
+ function mt:__newindex(key, value)
+ rawset(self, key, value)
+ n=n+1;keys[n] = key
+ mark[key] = true
+ if type(value) == 'table' then
+ sort_table(value)
+ end
+ end
+ function mt:__pairs()
+ local list = {}
+ local m = 0
+ for key in next, self do
+ if not mark[key] then
+ m=m+1;list[m] = key
+ end
+ end
+ if m > 0 then
+ move(keys, 1, n, m+1)
+ table_sort(list)
+ for i = 1, m do
+ local key = list[i]
+ keys[i] = key
+ mark[key] = true
+ end
+ n = n + m
+ end
+ local i = 0
+ return function ()
+ i = i + 1
+ local key = keys[i]
+ return key, self[key]
+ end
+ end
+
+ return setmetatable(tbl, mt)
+end
+
+function table.container(tbl)
+ return sort_table(tbl)
+end
+
+function table.equal(a, b)
+ local tp1, tp2 = type(a), type(b)
+ if tp1 ~= tp2 then
+ return false
+ end
+ if tp1 == 'table' then
+ local mark = {}
+ for k in pairs(a) do
+ if not table.equal(a[k], b[k]) then
+ return false
+ end
+ mark[k] = true
+ end
+ for k in pairs(b) do
+ if not mark[k] then
+ return false
+ end
+ end
+ return true
+ end
+ return a == b
+end
+
+function table.deepCopy(a)
+ local t = {}
+ for k, v in pairs(a) do
+ if type(v) == 'table' then
+ t[k] = table.deepCopy(v)
+ else
+ t[k] = v
+ end
+ end
+ return t
+end
+
+function io.load(file_path)
+ local f, e = io.open(file_path:string(), 'rb')
+ if not f then
+ return nil, e
+ end
+ if f:read(3) ~= '\xEF\xBB\xBF' then
+ f:seek("set")
+ end
+ local buf = f:read 'a'
+ f:close()
+ return buf
+end
+
+function io.save(file_path, content)
+ local f, e = io.open(file_path:string(), "wb")
+
+ if f then
+ f:write(content)
+ f:close()
+ return true
+ else
+ return false, e
+ end
+end