Mon, 16 Jan 2012 21:42:31 +0000
yaml-merge: Preserve ordering when merging arrays
#!/usr/bin/env lua5.1 local yaml = require "yaml"; function merge_in(t1, t2, depth) depth = depth or 0; if type(t1) == "table" and type(t2) == "table" then local array = {}; if depth < 2 then -- numeric for i,v in ipairs(t2) do array[v] = true; table.insert(t1, v); end end for k,v in pairs(t2) do -- non-numeric if not(type(k) == "number" and array[v]) then -- fixme, merge non-numeric t1[k] = merge_in(t1[k], v, depth + 1); end end elseif t2 ~= nil then t1 = t2; end return t1; end local out = {}; for i, fn in ipairs(arg) do local f = assert(io.open(fn, "r")); merge_in(out, yaml.load(f:read("*a"))); f:close(); end print(yaml.dump(out));