From 8ac662585325b4a21f4cb283e6806306dcae512c Mon Sep 17 00:00:00 2001
From: Romain Forlot <romain.forlot@iot.bzh>
Date: Wed, 13 Jun 2018 13:05:11 +0200
Subject: Add 2 lua utilities function
Sleep function and a recursive table
equality function
Change-Id: I4cb3a0f0909674f03caeadeebd8da35f16391198
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
---
ctl-lib/ctl-lua-utils.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/ctl-lib/ctl-lua-utils.c b/ctl-lib/ctl-lua-utils.c
index da22b7a..98dcebd 100644
--- a/ctl-lib/ctl-lua-utils.c
+++ b/ctl-lib/ctl-lua-utils.c
@@ -82,6 +82,56 @@ printf = function(s,...)\n\
return\n\
end\n\
\n\
+function sleep(n)\n\
+ os.execute(\"sleep \" .. tonumber(n))\n\
+end\n\
+\n\
+function table_eq(table1, table2)\n\
+ local avoid_loops = {}\n\
+ local function recurse(t1, t2)\n\
+ -- compare value types\n\
+ if type(t1) ~= type(t2) then return false end\n\
+ -- Base case: compare simple values\n\
+ if type(t1) ~= \"table\" then return t1 == t2 end\n\
+ -- Now, on to tables.\n\
+ -- First, let's avoid looping forever.\n\
+ if avoid_loops[t1] then return avoid_loops[t1] == t2 end\n\
+ avoid_loops[t1] = t2\n\
+ -- Copy keys from t2\n\
+ local t2keys = {}\n\
+ local t2tablekeys = {}\n\
+ for k, _ in pairs(t2) do\n\
+ if type(k) == \"table\" then table.insert(t2tablekeys, k) end\n\
+ t2keys[k] = true\n\
+ end\n\
+ -- Let's iterate keys from t1\n\
+ for k1, v1 in pairs(t1) do\n\
+ local v2 = t2[k1]\n\
+ if type(k1) == \"table\" then\n\
+ -- if key is a table, we need to find an equivalent one.\n\
+ local ok = false\n\
+ for i, tk in ipairs(t2tablekeys) do\n\
+ if table_eq(k1, tk) and recurse(v1, t2[tk]) then\n\
+ table.remove(t2tablekeys, i)\n\
+ t2keys[tk] = nil\n\
+ ok = true\n\
+ break\n\
+ end\n\
+ end\n\
+ if not ok then return false end\n\
+ else\n\
+ -- t1 has a key which t2 doesn't have, fail.\n\
+ if v2 == nil then return false end\n\
+ t2keys[k1] = nil\n\
+ if not recurse(v1, v2) then return false end\n\
+ end\n\
+ end\n\
+ -- if t2 has a key which t1 doesn't have, fail.\n\
+ if next(t2keys) then return false end\n\
+ return true\n\
+ end\n\
+ return recurse(table1, table2)\n\
+end\n\
-- lock global variable\n\
GLOBAL_lock(_G)\n\
";
--
cgit