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weeshalll

11-24-2009 06:49 AM

Reading all files in a directory in an alphabetical order

Hi all,
I want to read all the files in a directory alphabetically .
How can i achieve it ?
Can i use the "readdir" function ?

catkin

11-24-2009 06:59 AM

Which programming languages are you considering?

Hko	11-24-2009 07:07 AM

You can use readdir, sure, but you would still need to code the sorting yourself.

scandir() is more convenient when you need to sort. At the end of man 3 scandir there's example code which is a ready-made program to read a directory sorted alphabetically.

bigearsbilly

11-24-2009 07:37 AM

for a quick lazy solution
you could cheat and use popen

Code:

#include <stdio.h>

#define SZ 8192

int main (int argc, char ** argv) {



    FILE *fp = popen("ls", "r");

    char buffer[SZ+1];

    while (fgets(buffer, SZ, fp)) {

        puts(buffer);

    }



    return 0;

}

weeshalll

11-24-2009 11:05 PM

Thanks for your replies

@catkin
i am using C

smeezekitty

11-25-2009 12:35 AM

Quote:

Originally Posted by bigearsbilly (Post 3767886)

for a quick lazy solution
you could cheat and use popen

Code:

#include <stdio.h>

#define SZ 8192

int main (int argc, char ** argv) {



    FILE *fp = popen("ls", "r");

    char buffer[SZ+1];

    while (fgets(buffer, SZ, fp)) {

        puts(buffer);

    }



    return 0;

}

readdir is far more portable then popen.

bigearsbilly

11-25-2009 03:19 AM

Quote:

Originally Posted by smeezekitty (Post 3768779)

readdir is far more portable then popen.

all POSIX compliant OSes have it

that's portable enough for me
:)

weeshalll

11-25-2009 10:28 PM

Thank you all for the replies ...
I checked both the solutions and they are working fine for me

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