diff options
| -rwxr-xr-x | lclipd.lua | 27 |
1 files changed, 25 insertions, 2 deletions
@@ -83,6 +83,28 @@ insert into lclipd(content,dateAdded) values('XXX', unixepoch()); local pid_file = "/tmp/lclipd.pid" local db_file_name = "/tmp/lclipd_db_name" +--- Calculates metric entropy for a string +local function get_string_metric_entropy(str) + local map = {} + for i = 1, #str do + if map[str:sub(i, i)] ~= nil then + map[str:sub(i, i)] = map[str:sub(i, i)] + 1 + else + map[str:sub(i, i)] = 1 + end + end + + for k, v in pairs(map) do map[k] = v / #str end + + local entropy = 0 + + for _, v in pairs(map) do + entropy = entropy + v * (math.log(v) / math.log(2)) + end + + return -entropy / #str +end + --- A sleep function local function sleep(n) os.execute("sleep " .. tonumber(n)) end @@ -162,12 +184,13 @@ local function get_clipboard_content() log_to_syslog(errmsg, posix_syslog.LOG_CRIT) lclip_exit(1) elseif pid == 0 then -- child - -- clipnotify exits when there is a new entry on the clipboard - -- so we do want a blocking call here os.execute("clipnotify") os.exit(0) else -- parent + -- clipnotify exits when there is a new entry on the clipboard + -- so we do want a blocking call here posix_wait.wait(pid) + -- we dont care whether all the calls to the different clipboard apps -- succeed or not so we just ignore the errors. local _, handle_x = pcall(io.popen, "xsel -ob") |