prosody
5590c13552ab
util/serialization.lua

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util/serialization.lua @ 2148:5590c13552ab

util.serialization: Concise output for empty tables.
author Waqas Hussain <waqas20@gmail.com>
date Mon, 23 Nov 2009 19:35:24 +0500
parent 1523:841d61be198f
child 2149:603134825bdb
comparison
equal deleted inserted replaced
2147:119323e35c32 2148:5590c13552ab
11 local tostring = tostring; 11 local tostring = tostring;
12 local t_insert = table.insert; 12 local t_insert = table.insert;
13 local t_concat = table.concat; 13 local t_concat = table.concat;
14 local error = error; 14 local error = error;
15 local pairs = pairs; 15 local pairs = pairs;
16 local next = next;
16 17
17 local debug_traceback = debug.traceback; 18 local debug_traceback = debug.traceback;
18 local log = require "util.logger".init("serialization"); 19 local log = require "util.logger".init("serialization");
19 module "serialization" 20 module "serialization"
20 21
32 if type(o) == "number" then 33 if type(o) == "number" then
33 func(t, tostring(o)); 34 func(t, tostring(o));
34 elseif type(o) == "string" then 35 elseif type(o) == "string" then
35 func(t, (("%q"):format(o):gsub("\\\n", "\\n"))); 36 func(t, (("%q"):format(o):gsub("\\\n", "\\n")));
36 elseif type(o) == "table" then 37 elseif type(o) == "table" then
37 func(t, "{\n"); 38 if next(o) then
38 for k,v in pairs(o) do 39 func(t, "{\n");
39 func(t, indent(ind)); 40 for k,v in pairs(o) do
40 func(t, "["); 41 func(t, indent(ind));
41 func(t, basicSerialize(k)); 42 func(t, "[");
42 func(t, "] = "); 43 func(t, basicSerialize(k));
43 if ind == 0 then 44 func(t, "] = ");
44 _simplesave(v, 0, t, func); 45 if ind == 0 then
45 else 46 _simplesave(v, 0, t, func);
46 _simplesave(v, ind+1, t, func); 47 else
48 _simplesave(v, ind+1, t, func);
49 end
50 func(t, ",\n");
47 end 51 end
48 func(t, ",\n"); 52 func(t, indent(ind-1));
53 func(t, "}");
54 else
55 func(t, "{}");
49 end 56 end
50 func(t, indent(ind-1));
51 func(t, "}");
52 elseif type(o) == "boolean" then 57 elseif type(o) == "boolean" then
53 func(t, (o and "true" or "false")); 58 func(t, (o and "true" or "false"));
54 else 59 else
55 log("error", "cannot serialize a %s: %s", type(o), debug_traceback()) 60 log("error", "cannot serialize a %s: %s", type(o), debug_traceback())
56 func(t, "nil"); 61 func(t, "nil");