Differences

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--- lua:curl_example [2023/10/26 14:11] – [Writing some file onto WebHMI filesystem] emozolyak
+++ lua:curl_example [2024/01/18 12:58] (current) – atolstov
@@ Line 1: / Line 1: @@
+====== Getting some data from WebHMI itself using API ======
 <code lua>
+local res = ""
 local c = cURL.easy_init()
 c:setopt{ url = 'http://127.0.0.1/api/event-data/' .. event,
@@ Line 12: / Line 14: @@
          }
-    local res = ""
     c:perform{writefunction = function(str)
             res = res .. str
@@ Line 28: / Line 30: @@
 ====== Writing some file onto WebHMI filesystem ======
+The following example create some file with content in the WebHMI filesystem using ftp access. The condition is when runRegId is changed to 0. The script immediately sets the register back to 1 preventing multiple calls and calls curl function to save the file.
 <code lua>
 function main (userId)
     local runRegId = 840
     -- check invoke condition
-    if (R(runRegId)  ~= 0) then return end
+    if (R(runRegId) ~= 0) then return end
     W(runRegId, 1)
@@ Line 42: / Line 46: @@
                 upload = true,
                 timeout = 2,
-                readfunction = function()
+                readfunction =
-                                        if (not done) then
+                function() if (not done) then done = true ; return fileContent end end }
-                                            done = true
+    c : perform(); c : close()
-                                            return fileContent
-                                        end
-                               end } ; c : perform(); c : close()
 end