Making My Own Type of Zip File

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hey guys,

i have been making programming languages for a while as you might know from previous questions and i have started to make some pretty advanced programming languages. i was wondering if it is possible for me to make my own 'zip' file. i want to be able to get maybe three .txt files lets say and make a program that compresses them into one file. also with another program, i am able to access the data of each individual file by name. i want to create a programming language similar to java and have been thinking about it. if i make every different file a class and the name of the file being the class name, then i am able to easily look at each individual file and it's data. but if i were to do this, then i would have like 5 files and if i were to use a zip file, then it means that i would have to get another library or something that lets me access the contents of zip files.

i do know what i am getting myself into and i do understand that this code can be very complex, but please don't tell me that, i already know. so if you do have an idea of how to do this, then can you please put down some sample code and explain it?

thanks

Posted 7-Dec-12 16:24pm

Member 8378691

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Sergey Alexandrovich Kryukov 7-Dec-12 22:48pm

Just the opposite: your plans are so ambitious that such a simple problem as a compression algorithm without any special requirements should look like a snap for you; I don't even understand why are you asking for help...
--SA

Member 8378691 8-Dec-12 0:15am

i am asking for help because i don't know how to do this...

Sergey Alexandrovich Kryukov 8-Dec-12 0:26am

Some help has arrived, didn't you noticed it? :-)
--SA

Member 8378691 8-Dec-12 1:34am

yes i did, but this has not helped me at all. you don't get what i am trying to say. i don't want to make a zip file, i want to make my own file type completely that acts like a zip file. with one program, it compiles multiple files into it and with another i am able to look inside of it and access data from each individual file that has been compiled into it.

Sergey Alexandrovich Kryukov 8-Dec-12 23:36pm

You cannot get help. If you want to make your own file type, and then someone help you, what you get is not "your own" anymore. Got it? So, I found it appropriate to show you how someone else make his own file type and made is successful.

I hope this hint can help you.

--SA

Member 8378691 9-Dec-12 3:19am

i know what you mean, but what i am asking is how to make a file type that acts like a zip file. i know that you are only trying to help, but giving me examples like that doesn't help me. i want someone to tell me where to start and give me a basic piece of source code instead of someone giving me answers saying 'why don't you look at this very advanced code and try to understand what is happening'.

Sergey Alexandrovich Kryukov 9-Dec-12 20:04pm

I already said: you hardly can be helped. People who do completely own stuff, usually don't ask for help. In first part of my answer, I gave you an idea on where to see the basic code.

What me to tell you things seriously? Your intent does not look serious to me. If it was, you would find everything and did not complain that you get no help...
--SA

Member 8378691 10-Dec-12 2:35am

your right, i am not serious, i'm curious. i just want to know how to do this and being given a big lot of complicated code and expecting me to look through all of it isn't what i had in mind. i thought that someone would give me a small example code.

Sergey Alexandrovich Kryukov 10-Dec-12 9:07am

I understand you. But you should also understand that nobody will write that "small example code" for you. You can find some starting from the reference I gave you first. Existing algorithms are well known, but none of the implementations can be too simple. You would be better off finding and reading some pseudo-code. I guess, that's it.

Wish you the best of luck.
--SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-12-07T17:34:00

You will find more then enough code samples if you start from here: http://en.wikipedia.org/wiki/Data_compression[^].

Want to see really successful code? Please see:
http://en.wikipedia.org/wiki/7-Zip[^],
http://www.7-zip.org/[^].

Open code, by the way, and a lot of useful information on the 7zip Web site.

Good luck,

—SA