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/*
* Macintosh version of UNIX directory access package
* (opendir, readdir, closedir).
* Public domain by Guido van Rossum, CWI, Amsterdam (July 1987).
*/
#include "dirent.h"
#include "macdefs.h"
static DIR opened;
/*
* Open a directory. This means calling PBOpenWD.
* The value returned is always the address of opened, or NULL.
* (I have as yet no use for multiple open directories; this could
* be implemented by allocating memory dynamically.)
*/
DIR *
opendir(path)
char *path;
{
union {
WDPBRec d;
VolumeParam v;
} pb;
char ppath[MAXPATH];
short err;
if (opened.nextfile != 0) {
errno = EBUSY;
return NULL; /* A directory is already open. */
}
strncpy(ppath+1, path, ppath[0]= strlen(path));
pb.d.ioNamePtr= (unsigned char *)ppath;
pb.d.ioVRefNum= 0;
if (hfsrunning()) {
pb.d.ioWDProcID= 0;
pb.d.ioWDDirID= 0;
err= PBOpenWD((WDPBPtr)&pb, FALSE);
}
else {
pb.v.ioVolIndex= 0;
err= PBGetVInfo((ParmBlkPtr)&pb, FALSE);
}
if (err != noErr) {
errno = ENOENT;
return NULL;
}
opened.dirid= pb.d.ioVRefNum;
opened.nextfile= 1;
return &opened;
}
/*
* Close a directory.
*/
void
closedir(dirp)
DIR *dirp;
{
if (hfsrunning()) {
WDPBRec pb;
pb.ioVRefNum= dirp->dirid;
(void) PBCloseWD(&pb, FALSE);
}
dirp->dirid= 0;
dirp->nextfile= 0;
}
/*
* Read the next directory entry.
*/
struct dirent *
readdir(dp)
DIR *dp;
{
union {
DirInfo d;
FileParam f;
HFileInfo hf;
} pb;
short err;
static struct dirent dir;
dir.d_name[0]= 0;
pb.d.ioNamePtr= (unsigned char *)dir.d_name;
pb.d.ioVRefNum= dp->dirid;
pb.d.ioFDirIndex= dp->nextfile++;
pb.d.ioDrDirID= 0;
if (hfsrunning())
err= PBGetCatInfo((CInfoPBPtr)&pb, FALSE);
else
err= PBGetFInfo((ParmBlkPtr)&pb, FALSE);
if (err != noErr) {
errno = EIO;
return NULL;
}
(void) p2cstr((unsigned char *)dir.d_name);
return &dir;
}
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