Lua: returning or storing REPL/loadstring string output in a string variable

1
votes

The same question already asked here

Lua: Executing a string and storing the output of the command in a variable

But I want the function loadstring somehow return the result in string form that may be assigned to a string variable later to use further, what it returns is a function. Below code is an example:

ret = assert(loadstring(str_cmd))()

ret is a function:(

How can I get the REPL/loadstring output in string form?

1
stringluaread-eval-print-loop
Provide a simple example of str_cmd and your expected result. - Yu Hao
str_cmd = "print("A")" output string will be = A, It is all about output redirection - user3051677

1 Answers

0
votes

If all output from str_cmd comes from calls to print, redefine print before loading str_cmd to save all output in a table. After running str_cmd, use the table in table.concat for instance.

Instead of redefining print you can provide an environment to run str_cmd in. You'll probably need to make that environment inherit from the global environment.