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