Programming Forums > Application Development > C

zl0h · Nov 11th, 2006, 12:07 AM

I got a file included as byte array in my c application and write that to a file like this:

FILE *out, *fopen();
out = fopen("test.dll","w");

int i = 0;
while(i < TESTSTUB_LEN)
{
          fputc(TEST_STUB[i], out);
          i++;
}

fclose(out);

So that actually works well, the problem is just that it adds 3229 for some reason.

Original file: 818176 bytes
New written file: 821405 bytes

I checked the byte array, it's correct.

Would be awesome if anyone was able to help me out

Thank you
zl0h

The Dark · Nov 11th, 2006, 3:06 AM

Is TESTSTUB_LEN equal to 818176? It is impossible to tell from the snippet of your code. If it is 818176 and you are under Windows, then you might be falling foul of the text mode output translating LFs (line feed) into CRLF (carriage return - line feed) pairs.
Try changing the fopen call to use "wb" instead of "w", that will put the output file into binary mode.

zl0h · Nov 11th, 2006, 4:07 AM

The "wb" works! Thanks so much dude, was desperating of this! Made me happy. =)

Nov 11th, 2006, 12:07 AM	#1
zl0h Newbie Join Date: Nov 2006 Posts: 4 Rep Power: 0	Weird additional bytes I got a file included as byte array in my c application and write that to a file like this: (Toggle Plain Text) FILE out, fopen(); out = fopen("test.dll","w"); int i = 0; while(i < TESTSTUB_LEN) { fputc(TEST_STUB[i], out); i++; } fclose(out); FILE out, fopen(); out = fopen("test.dll","w"); int i = 0; while(i < TESTSTUB_LEN) { fputc(TEST_STUB[i], out); i++; } fclose(out); So that actually works well, the problem is just that it adds 3229 for some reason. Original file: 818176 bytes New written file: 821405 bytes I checked the byte array, it's correct. Would be awesome if anyone was able to help me out Thank you zl0h

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Nov 11th, 2006, 3:06 AM	#2
The Dark Expert Programmer Join Date: Jun 2005 Posts: 894 Rep Power: 4	Is TESTSTUB_LEN equal to 818176? It is impossible to tell from the snippet of your code. If it is 818176 and you are under Windows, then you might be falling foul of the text mode output translating LFs (line feed) into CRLF (carriage return - line feed) pairs. Try changing the fopen call to use "wb" instead of "w", that will put the output file into binary mode.

Nov 11th, 2006, 4:07 AM	#3
zl0h Newbie Join Date: Nov 2006 Posts: 4 Rep Power: 0	The "wb" works! Thanks so much dude, was desperating of this! Made me happy. =)

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Programming Forums > Application Development > C

Weird additional bytes