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tools/migration/main.lua: Add command-line parsing, including --config=CONFIG_FILE, and the ability to specify to/from stores to migrate

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Matthew Wild 2011-02-25 01:31:08 +00:00
parent a33886bcb1
commit 7c054e5160
1 changed files with 29 additions and 11 deletions
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40
tools/migration/main.lua
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@ -1,21 +1,39 @@
-- Command-line parsing
local options = {};
local handled_opts = 0;
for i = 1, #arg do
if arg[i]:sub(1,2) == "--" then
local opt, val = arg[i]:match("([%w-]+)=?(.*)");
if opt then
options[(opt:sub(3):gsub("%-", "_"))] = #val > 0 and val or true;
end
handled_opts = i;
else
break;
end
end
table.remove(arg, handled_opts);
-- Load config file
local function loadfilein(file, env) return loadin and loadin(env, io.open(file):read("*a")) or setfenv(loadfile(file), env); end
config = {};
local config_env = setmetatable({}, { __index = function(t, k) return function(tbl) config[k] = tbl; end; end });
loadfilein("config.lua", config_env)();
loadfilein(options.config or "config.lua", config_env)();
package.path = "../../?.lua;"..package.path
package.cpath = "../../?.dll;"..package.cpath
if not package.loaded["util.json"] then
package.path = "../../?.lua;"..package.path
package.cpath = "../../?.dll;"..package.cpath
end
local from_store = arg[1] or "input";
local to_store = arg[2] or "output";
assert(config.input, "no input specified")
assert(config.output, "no output specified")
local itype = assert(config.input.type, "no input.type specified");
local otype = assert(config.output.type, "no output.type specified");
local reader = require(itype).reader(config.input);
local writer = require(otype).writer(config.output);
assert(config[from_store], "no input specified")
assert(config[to_store], "no output specified")
local itype = assert(config[from_store].type, "no type specified for "..from_store);
local otype = assert(config[to_store].type, "no type specified for "..to_store);
local reader = require(itype).reader(config[from_store]);
local writer = require(otype).writer(config[to_store]);
local json = require "util.json";