how to list files in a directory, to then manipulate each file.

This is a discussion on how to list files in a directory, to then manipulate each file. within the A Brief History of Cprogramming.com forums, part of the Community Boards category; I want to automaticaly manipulate each file in a directory. First thing is to be able ( and I have ...

  1. #1
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    Question how to list files in a directory, to then manipulate each file.

    I want to automaticaly manipulate each file in a directory. First thing is to be able ( and I have searched long nights unsuccessfully) to list files in a directory, then treat one at a time.
    I'm writting a DOS console application, C++, win2000.

  2. #2
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    you'll find the dir.h header has a lot of file/dir manip stuff

    use findnextfile or something like that, getcwd, chdir etc functions to use files and dirs.

    hope this gets you started.

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    HEY! Thanks........just the name of it looks promissing (dir.h)
    I'm sure it's not in any of my books. I'll have to wait till I get to work to check it out... in any case...thank you very much.

  4. #4
    Registered User Sunny's Avatar
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    Red face RE: DIr/Stuff

    Ok... I bumped into the same challenge recently... First of all, you'll need to find a way to get the file-name of each file ( sometimes directories pretend to be files too). To do this, you can use functions such as 'findfirst()' and 'findnext()' or any other funtion. Then you'll have to use a buffer to store the filename of each individual file. This is though. I'm using linked lists now, but it sometimes gives me problems when I bump into more than 100 or so files in one dir... so you c... If you do come out with anything better than me, please post a reply, coz i'm really interested in finding out...

    Thanks

  5. #5
    Super Moderator VirtualAce's Avatar
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    As a matter of fact, directories are files. They are just treated differently when encountered. DOS implements numerous disk I/O functions like findnext() and findfirst() via int 21h. Check out RBIL to view these interrupts or you can try to get your hands on a DOS tech ref. The disk I/O functions are far too numerous for me to list them here.

  6. #6
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    I know BASIC has a statement which will print (to the screen) a directory of a folder (just like typing DIR), but I have never been able to either manipulate so you could access that data as variables in a program, or found the C/ASM equivalent.

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