Add. Example for version_info.

examples/lcurl/crul_info.lua

@@ -0,0 +1,36 @@
+local curl = require "lcurl"
+
+local function keys(t)
+  local s = {}
+  for k in pairs(t) do
+    s[#s + 1] = k
+  end
+  table.sort(s)
+  return s
+end
+
+local function printf(...)
+  return print(string.format(...))
+end
+
+local exclude = {protocols = 1, features = 1, version = 1, version_num = 1}
+
+local info = curl.version_info()
+
+print(curl.version())
+
+for _, key in ipairs(keys(info)) do if not exclude[key] then
+  printf("%15s: %s", key, info[key])
+end end
+
+print('Protocols:')
+for _, protocol in ipairs(keys(info.protocols))do
+  local on = info.protocols[protocol]
+  printf('  [%s] %s', on and '+' or '-', protocol)
+end
+
+print('Features:')
+for _, feature in ipairs(keys(info.features))do
+  local on = info.features[feature]
+  printf('  [%s] %s', on and '+' or '-', feature)
+end