Created
September 4, 2015 11:34
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Lua functions
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| -- -*- coding: utf-8 -*- | |
| -- | |
| local M = {} | |
| function M.readfile(file) | |
| local conf = {} | |
| local fp = io.open(file, "r") | |
| if fp == nil then | |
| return "File doesn't exists" | |
| end | |
| for line in fp:lines() do | |
| line = line:match("%s*(.+)") | |
| if line and line:sub(1, 1) ~= "#" and line:sub(1, 1) ~= ";" then | |
| option = line:match("%S+"):lower() | |
| value = line:match("=%S*%s*(.*)" ):gsub('["\']', '') | |
| if not value then | |
| conf[option] = true | |
| else | |
| if not value:find(",") then | |
| conf[option] = value | |
| else | |
| value = value .. "," | |
| conf[option] = {} | |
| for entry in value:gmatch("%s*(.-),") do | |
| conf[option][#conf[option]+1] = entry | |
| end | |
| end | |
| end | |
| end | |
| end | |
| fp:close() | |
| return conf | |
| end | |
| function M.tostring(tbl) | |
| local function val_to_str(v) | |
| if "string" == type(v) then | |
| v = string.gsub(v, "\n", "\\n") | |
| if string.match(string.gsub(v,"[^'\"]",""), '^"+$') then | |
| return "'" .. v .. "'" | |
| end | |
| return '"' .. string.gsub(v,'"', '\\"') .. '"' | |
| else | |
| return "table" == type(v) and M.tostring(v) or tostring(v) | |
| end | |
| end | |
| local function key_to_str(k) | |
| if "string" == type(k) and string.match(k, "^[_%a][_%a%d]*$") then | |
| return k | |
| else | |
| return "[" .. val_to_str(k) .. "]" | |
| end | |
| end | |
| local result, done = {}, {} | |
| for k, v in ipairs(tbl) do | |
| table.insert(result, val_to_str(v)) | |
| done[k] = true | |
| end | |
| for k, v in pairs(tbl) do | |
| if not done[k] then | |
| table.insert(result, key_to_str(k) .. "=" .. val_to_str(v)) | |
| end | |
| end | |
| return "{" .. table.concat(result, ",") .. "}" | |
| end | |
| function M.encode_table(tbl) | |
| local str = "" | |
| local function char2hexcode(c) | |
| return string.format("%%%02X", string.byte(c)) | |
| end | |
| local function escape(str) | |
| str = string.gsub(str, "\n", "\r\n") | |
| str = string.gsub(str, "([^0-9a-zA-Z_. -])", char2hexcode) | |
| str = string.gsub(str, " ", "+") | |
| return str | |
| end | |
| for key, vals in pairs(tbl) do | |
| if type(vals) ~= "table" then | |
| vals = {vals} | |
| end | |
| for k, val in pairs(vals) do | |
| str = str .. "&" .. escape(key) .. "=" ..escape(val) | |
| end | |
| end | |
| return string.sub(str,2) | |
| end | |
| return M |
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