Mail Archives: djgpp/1996/12/02/10:11:58
On Sun, 1 Dec 1996, Rodger D. Ballard Jr. wrote:
> I am sorry for not being too clear on that one. This question pertains more
> towards C and for instance if I wanted to make a program that supports long
> file name support under a Win95 dos box. I was curious if anyone knew how
> to implement this in a seperate program via DJGPP C code (I have a feeling
> it would involve inline assembler, something I have never touched under
> DJ.)
Unless I misunderstand you completely, I already answered this: *every*
program compiled with DJGPP supports long filenames when you run it from
Windows 95 DOS box. This includes programs compiled by you, not only
those that come pre-built with the DJGPP distribution. You don't have to
do anything special to get this support: it's built into the DJGPP runtime
library functions which your program calls. For instance, you can say
this in your program:
FILE *fp = fopen ("this_is_the_file_name.txt", "r");
When this is run on Windows 95, the function `fopen' will see that long
filenames are supported on this platform and will then use the long
filename version of DOS OpenFile function. This is all entirely
automatic.
> A perfect example is this:
>
> Construct a program that will add line numbers and colons in front of every
> line in a specified file that supports long file names:
>
> A sample run might be:
>
> disptext this_is_the_file_name.txt
Write your `disptext' in C, compile it with DJGPP, and you will get a
program that can be run like that.
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