diff options
Diffstat (limited to 'script/utility.lua')
| -rw-r--r-- | script/utility.lua | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/script/utility.lua b/script/utility.lua new file mode 100644 index 00000000..d7fc9dde --- /dev/null +++ b/script/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 |