Add line to file with MaxScript

Question

I have a file:

A

Some text

Sum up

I can create that file easily with MaxScript's format "..." to:file.

But how to add some lines to already existing and not empty file?

For the most, I would like to add the line with my text:

1. After specified text occurence (.e.g after Some text, in new line)
2. At specified line (e.g. in empty line #4 and add new line after it)

If it's not possible, then maybe can I append something to file (write it after Sum up)?

---

p.s. I could always read the whole file to variable, add my text to it and then save the file.

But it's not really an option for big files (and I want to make it fast).

Answer 1

To append to a file, use the openFile with "a" as the mode argument. The full documentation can be found at FileStream Values:

fs = openFile "c:/Temp/YourFile.txt" mode:"a"
print "This line will be appended to your file" to:fs
close fs

-- Insert some text in the middle of a file
fsadd = openFile "c:/Temp/YourFile.txt" mode:"a+"
skipToString fsadd "Some text to write"
skipToNextLine fsadd
print "Insert New Text" to:fsadd
close fsadd