appending to a file (text file creation) - LUA

[AlCapone]

I am trying to use Girder to create a HTML file - so all I am looking for is a way to open, add text, and close a file.

I would like to use LUA
(as opposite to dumping to file thru a bat file & argumnets)

But the poor LUA documentation does not make it easier...

anyone see bugs ? - (sure you do) :)

h = openfile ("c:\a.txt","w")
writeto ("c:\a.txt")
write (h,"test")
closefile h

I tried writing first, but no luck, the goal is to append text

[AlCapone]

were looking for a "print to file" function, but lo luck...

I am still amazed how such a great program (LUA) can be that poorly documented...

[BeRnA]

fd = openfile ("c:\\a.txt","a")
write (fd,"new line")
closefile(fd)


So simple as that...

[Promixis]

For more options, I would suggest using the FileSystemObject.

See the luacom thread.

[AlCapone]

thank you
thank you

[Promixis]

were looking for a "print to file" function, but lo luck...

I am still amazed how such a great program (LUA) can be that poorly documented...

Get the Lua book from amazon. It covers lua 5 but is mostly compatible with lua 4.

[AlCapone]

Get the Lua book from amazon. It covers lua 5 but is mostly compatible with lua 4.

I will try to find out what's inside them...

I still remember six books I bought many years ago, the goal were to get more advanced asssembly knowledge....., some books were for newbies, other mainly about making use of certain linkers/compilers, rather than FPU instructions.

and the one about speed, discussed Turbo Profiler while I was looking for raw information about optimizations... , not "how to use turbo profiler" - because I did not use TASM at that time..


- bit afraid of LUA book being full of incomplete, theoretical examples like
http://lua-users.org/wiki/FileInputOutput , or too basic..

[Promixis]

I have read the first 6 or so chapters and found it be very useful and interesting. I haven't spent anytime reading about file io

[AlCapone]

not asking you to read the book for me, just let out som steam, after putting your good help to use, I got stuck 1 minute later :)
tried to make a new line CR/LF , writing to file chr(10) and chr(13)

tried :

write (fd, string.char(10,13))

according to : http://lua-users.org/wiki/StringsTutorial

but no

tried:
fedup = string.char(10,13)
write (fd, fedup)

but nooooo :)
even string.char does not work....

- I also tried "/n" in pure desperation :)

the paranoia says this language is made up just to annoy me ....

:)

[Promixis]

I think you are using lua 5 and not lua 4 code...

lua 4 doesn't uses a different string library.

[AlCapone]

thanks - I suspected that ... thanks to the brilliant documentation it's not easy to know what version it's about...


BTW: does anybody know why Girder uses "old" LUA ? - is there any plan to implement ver 5 ?



>> the Lua book from amazon. It covers lua 5 but is mostly compatible with lua 4.

err... yes.... I see .. some guessing will be left to me - just like it is now :)