Cheat Engine :: View topic - [SOLVED]Empying A Binary File To Zero-Byte size.

Cheat Engine
The Official Site of Cheat Engine

FAQ

Memberlist

Usergroups

Profile

[SOLVED]Empying A Binary File To Zero-Byte size.
Goto page 1, 2 Next

Cheat Engine Forum Index -> General programming

View previous topic :: View next topic

Author

Message

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 8:12 am Post subject: [SOLVED]Empying A Binary File To Zero-Byte size.

Solved, thanks to nog_lorp (and Dark Byte for his tips too). Last edited by DeletedUser14087 on Fri Oct 31, 2008 2:55 am; edited 2 times in total

Dark Byte
Site Admin

Reputation: 475

Joined: 09 May 2003
Posts: 26002
Location: The netherlands

Posted: Thu Oct 30, 2008 8:50 am Post subject:

delete it and create a new file with the same name at that location without writing to it _________________ Tools give you results. Knowledge gives you control. Like my help? Join me on Patreon so i can keep helping

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 8:54 am Post subject:

Dark Byte wrote:

delete it and create a new file with the same name at that location without writing to it

that's the exact thing assaf84 told me, and i told him "i'm looking for a challenge, every baby can do that".

Isn't there a way to flush the file's buffer and re-write to it ?.

Edit:

CreateFile (OPEN_EXISTING) -> FlushFileBuffer(wtf) -> WriteFile -> CloseHandle.

sphere90
Grandmaster Cheater

Reputation: 0

Joined: 24 Jun 2006
Posts: 912

Posted: Thu Oct 30, 2008 9:19 am Post subject:

Rot1 wrote:

CreateFile (OPEN_EXISTING) -> FlushFileBuffer(wtf) -> WriteFile -> CloseHandle.

Seriously dude, check what a function does before using it. Do you know what FlushFileBuffers actually do? It "flushes the buffers of a specified file and causes all buffered data to be written to a file". It doesn't clear a file. Flushing a FILE and flushing the FILE BUFFER are totally different things.

Last edited by sphere90 on Thu Oct 30, 2008 9:23 am; edited 1 time in total

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 9:23 am Post subject:

sphere90 wrote:

Rot1 wrote:

CreateFile (OPEN_EXISTING) -> FlushFileBuffer(wtf) -> WriteFile -> CloseHandle.

Seriously dude, check what a function does before using it. Do you know what FlushFileBuffers actually do? It "flushes the buffers of a specified file and causes all buffered data to be written to a file". Flushing a FILE and flushing the FILE BUFFER are totally different things.

It's alike CopyFile() i assume ? could be a 2nd use for WriteFile() too.

sphere90
Grandmaster Cheater

Reputation: 0

Joined: 24 Jun 2006
Posts: 912

Posted: Thu Oct 30, 2008 9:27 am Post subject:

Rot1 wrote:

sphere90 wrote:

Rot1 wrote:

CreateFile (OPEN_EXISTING) -> FlushFileBuffer(wtf) -> WriteFile -> CloseHandle.

Seriously dude, check what a function does before using it. Do you know what FlushFileBuffers actually do? It "flushes the buffers of a specified file and causes all buffered data to be written to a file". Flushing a FILE and flushing the FILE BUFFER are totally different things.

It's alike CopyFile() i assume ? could be a 2nd use for WriteFile() too.

Sometimes file operations are not synchronous. The bytes that you write to a file using WriteFile is written to a temporary buffer first. When you call FlushFileBuffers, the bytes that are stored in the buffer will be written to your file.

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 9:33 am Post subject:

ok sphere90, i understand but lets not go off-topic, if there isn't a way to make a file empty then i guess i'll have to delete it.

Jani
Grandmaster Cheater

Reputation: 2

Joined: 29 Dec 2006
Posts: 804

Posted: Thu Oct 30, 2008 10:51 am Post subject:

Code:

FILE *f;
f = fopen("file.bin", "w");
fclose(f);

SXGuy
I post too much

Reputation: 0

Joined: 19 Sep 2006
Posts: 3551

Posted: Thu Oct 30, 2008 11:30 am Post subject:

Jani wrote:

Code:

FILE *f;
f = fopen("file.bin", "w");
fclose(f);

Doesnt that just open a file with write permissions and then closes it? how does that help?

Dark Byte
Site Admin

Reputation: 475

Joined: 09 May 2003
Posts: 26002
Location: The netherlands

Posted: Thu Oct 30, 2008 12:26 pm Post subject:

no, that's w+ w is create/replace file with 0 size with write access _________________ Tools give you results. Knowledge gives you control. Like my help? Join me on Patreon so i can keep helping

lurc
Grandmaster Cheater Supreme

Reputation: 2

Joined: 13 Nov 2006
Posts: 1900

Posted: Thu Oct 30, 2008 1:27 pm Post subject:

Rot1 wrote:

that's the exact thing assaf84 told me, and i told him "i'm looking for a challenge, every baby can do that".

The point of program is not to make it fancy, but to make it efficient Rolling Eyes

.

If the easiest and most efficient way is to just delete the file and recreate it, then use that instead of thinking of some dumb retarded way that you don't know how to do.
_________________

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 2:25 pm Post subject:

lurc wrote:

Rot1 wrote:

that's the exact thing assaf84 told me, and i told him "i'm looking for a challenge, every baby can do that".

The point of program is not to make it fancy, but to make it efficient Rolling Eyes

.

If the easiest and most efficient way is to just delete the file and recreate it, then use that instead of thinking of some dumb retarded way that you don't know how to do.

well, that's why i'm asking, and if you don't know how to do it then don't reply !.

HomerSexual
Grandmaster Cheater Supreme

Reputation: 5

Joined: 03 Feb 2007
Posts: 1657

Posted: Thu Oct 30, 2008 2:31 pm Post subject:

He already told you how to do it. Stop being stubborn and trying to make shit complicated. Lesson learned: Not everything has to be complicated to be the correct and efficient way! _________________

DeletedUser14087
I post too much

Reputation: 2

Joined: 21 Jun 2006
Posts: 3069

Posted: Thu Oct 30, 2008 2:39 pm Post subject:

blankrider wrote:

He already told you how to do it. Stop being stubborn and trying to make shit complicated.

Lesson learned: Not everything has to be complicated to be the correct and efficient way!

I'm not!, i'm asking for a method OTHER THAN deleting a file, then he comes saying "stop trying doing stuff you don't know", how does it help me ? jesus am i the only one who get fucking pissed @ fucktards.

smartz993
I post too much

Reputation: 2

Joined: 20 Jun 2006
Posts: 2013
Location: USA

Posted: Thu Oct 30, 2008 3:00 pm Post subject:

Rot1 wrote:

blankrider wrote:

He already told you how to do it. Stop being stubborn and trying to make shit complicated.

Lesson learned: Not everything has to be complicated to be the correct and efficient way!

Why are you looking for a method other than this one? It's the most simplistic.

Display posts from previous:

	Cheat Engine Forum Index -> General programming	All times are GMT - 6 Hours Goto page 1, 2 Next
Page 1 of 2

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum