peimbert
asked on
Binary Output!!!
Hi, I have the following C code and I would like some help translating it to Delphi!!
int print_file(const char *arch, const char *content)
{
FILE *f;
int c;
if ((f=fopen(arch,"rb")) == NULL) {
printf ("File could not be opened: %s\n",arch);
return 0;
}
setmode( fileno( stdout ), O_BINARY );
while ((c = fgetc(f)) != EOF)
putchar(c);
fclose(f);
return 1;
}
All this code does is to print out to the standard output the contents of a file. The problem I have is with the function
setmode( fileno( stdout ), O_BINARY );
This function converts the standard output (which is by default text) to binary.
Example:
if in DOS Prompt I type
C:\>type image.gif > image2.gif
It won't work (since the ">" operator doesn't specify a binary output).
Thank you very much,
Nadia :o)
BTW, this code compiles with Borland C++ (or C++ Builder). I haven't tried it with VC, Wattcom or Symantec's C++
int print_file(const char *arch, const char *content)
{
FILE *f;
int c;
if ((f=fopen(arch,"rb")) == NULL) {
printf ("File could not be opened: %s\n",arch);
return 0;
}
setmode( fileno( stdout ), O_BINARY );
while ((c = fgetc(f)) != EOF)
putchar(c);
fclose(f);
return 1;
}
All this code does is to print out to the standard output the contents of a file. The problem I have is with the function
setmode( fileno( stdout ), O_BINARY );
This function converts the standard output (which is by default text) to binary.
Example:
if in DOS Prompt I type
C:\>type image.gif > image2.gif
It won't work (since the ">" operator doesn't specify a binary output).
Thank you very much,
Nadia :o)
BTW, this code compiles with Borland C++ (or C++ Builder). I haven't tried it with VC, Wattcom or Symantec's C++
I would translate this code like this:
Function PrintFile(arch : TFileName) : Boolean;
var
f : File of Byte;
c : byte;
begin
result := False;
assignfile(f, arch);
resetfile(f);
if IOresult <> 0 then
begin
ShowMessage(format('Could not open %s', [arch]));
exit;
end;
while not eof(f) do
begin
read(f, c);
write(char(c));
edn;
CloseFile(f);
Result := True;
end;
Cheers,
Raymond.
Function PrintFile(arch : TFileName) : Boolean;
var
f : File of Byte;
c : byte;
begin
result := False;
assignfile(f, arch);
resetfile(f);
if IOresult <> 0 then
begin
ShowMessage(format('Could not open %s', [arch]));
exit;
end;
while not eof(f) do
begin
read(f, c);
write(char(c));
edn;
CloseFile(f);
Result := True;
end;
Cheers,
Raymond.
Hi Nadia,
one should add that EOF in Delphi does not return True if a Ctrl+Z character appears (as fgetc in C) so you don't need to set the file input into binary mode. Consequently, there's no function in Delphi to do this. EOF is implemented by comparing the file size with its position thus the content doesn't matter.
Ciao, Mike
one should add that EOF in Delphi does not return True if a Ctrl+Z character appears (as fgetc in C) so you don't need to set the file input into binary mode. Consequently, there's no function in Delphi to do this. EOF is implemented by comparing the file size with its position thus the content doesn't matter.
Ciao, Mike
ASKER
Thank you very much Ray, Mike!! I got it working!
Dam, that was so easy to try out :(
I once had to make a program that did this in C++, and if it wheren't because the setmode function, my app wouldn't of run.
Well ray, this was a total rip off ;-))) ....why didn't I just print the file without worrying about the setmode function ????
Raymond, can you answer this question plz?
Thank you both,
Nadia
Dam, that was so easy to try out :(
I once had to make a program that did this in C++, and if it wheren't because the setmode function, my app wouldn't of run.
Well ray, this was a total rip off ;-))) ....why didn't I just print the file without worrying about the setmode function ????
Raymond, can you answer this question plz?
Thank you both,
Nadia
Nadia, there's an "accept comment as answer" on each cyan colored line on the page. Click this link to accept a comment as answer.
Ciao, Mike
Ciao, Mike
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