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authorRomain Forlot <romain.forlot@iot.bzh>2018-07-28 11:57:35 +0200
committerRomain Forlot <romain.forlot@iot.bzh>2018-07-30 13:27:15 +0000
commit4e30eb1444fc88b73582db421d3a7467a3647064 (patch)
treeb363a8cd5e105919368cacf4de04f7634b0ac280
parent61cbc9a5e0729fe4e0274186b0137f5d1f1b75d6 (diff)
New defaults useful functions on lua table
Add a function that returns the size of a table as the operator '#' isn't considered are safe or accurate. Add another function to deep copy a table. Change-Id: Ia549315e305dd7d02b975a3e8a1278c4ab709eec Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
-rw-r--r--ctl-lib/ctl-lua-utils.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/ctl-lib/ctl-lua-utils.c b/ctl-lib/ctl-lua-utils.c
index 98dcebd..5c96226 100644
--- a/ctl-lib/ctl-lua-utils.c
+++ b/ctl-lib/ctl-lua-utils.c
@@ -86,6 +86,27 @@ function sleep(n)\n\
os.execute(\"sleep \" .. tonumber(n))\n\
end\n\
\n\
+function table_size(t)\n\
+ local size = 0\n\
+ for _ in pairs(t) do\n\
+ size = size + 1\n\
+ end\n\
+ return size\n\
+end\n\
+function deep_copy(orig)\n\
+ local orig_type = type(orig)\n\
+ local copy\n\
+ if orig_type == 'table' then\n\
+ copy = {}\n\
+ for orig_key, orig_value in next, orig, nil do\n\
+ copy[deep_copy(orig_key)] = deep_copy(orig_value)\n\
+ end\n\
+ setmetatable(copy, deep_copy(getmetatable(orig)))\n\
+ else -- number, string, boolean, etc\n\
+ copy = orig\n\
+ end\n\
+ return copy\n\
+end\n\
function table_eq(table1, table2)\n\
local avoid_loops = {}\n\
local function recurse(t1, t2)\n\