From david@cs.uow.edu.au Thu Dec  3 18:59:54 1992
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From: David E A Wilson <david@cs.uow.edu.au>
Message-Id: <199212040048.AA20236@wraith.cs.uow.edu.au>
Subject: findfirst & findnext (fwd)
To: hyperC-l@calvin.sfasu.edu (Hyper C Mailing List)
Date: Fri, 4 Dec 92 11:48:07 EST
Status: R

> Microsoft C and Turbo C (maybe eUnoch too ;-)) have these two 
> functions to read a directory and compare each filename therein 
> to a filespec.  Has anyone written anything like this for 
> HyperC?  I think I have something written in assembly that 
> could be modified to provide the functionality ... after I 
> determine what all the parms are (wannabe or appear to be 
> standard).   I just don't want to re-invent the wheel.

I personally would prefer to see the UNIX style opendir/readdir/closedir
interface.

     #include <dirent.h>
 
     DIR *opendir(dirname)
     char *dirname;
 
     struct dirent *readdir(dirp)
     DIR *dirp;
 
     long telldir(dirp)
     DIR *dirp;
 
     void seekdir(dirp, loc)
     DIR *dirp;
     long loc;
 
     void rewinddir(dirp)
     DIR *dirp;
 
     int closedir(dirp)
     DIR *dirp;
 
Under ProDOS they should not be very difficult at all to write. I might have
a go myself.

dirent.h defines the above routine types in terms of:

/*
 * Definitions for library routines operating on directories.
 */
typedef struct __dirdesc {
        int     dd_fd;          /* file descriptor */
        long    dd_loc;         /* buf offset of entry from last readddir() */
        long    dd_size;        /* amount of valid data in buffer */
        long    dd_bsize;       /* amount of entries read at a time */
        long    dd_off;         /* Current offset in dir (for telldir) */
        char    *dd_buf;        /* directory data buffer */
} DIR;

-- 
David Wilson				+61 42 213802 voice, +61 42 213262 fax
Dept Comp Sci, Uni of Wollongong	david@cs.uow.edu.au