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74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/* GET FULL PATHNAME OF A FILE.
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** Original by Guido, modified by Jack to handle FSSpecs
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** (and only tested under MetroWerks, so far)
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*/
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#include <string.h>
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#include <Files.h>
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#include "nfullpath.h"
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/* Mac file system parameters */
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#define MAXPATH 256 /* Max path name length+1 */
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#define SEP ':' /* Separator in path names */
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#define ROOTID 2 /* DirID of a volume's root directory */
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/* Macro to find out whether we can do HFS-only calls: */
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#define FSFCBLen (* (short *) 0x3f6)
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#define hfsrunning() (FSFCBLen > 0)
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int
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nfullpath(fsp, retbuf)
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FSSpec *fsp;
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char *retbuf;
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{
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union {
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HFileInfo f;
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DirInfo d;
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WDPBRec w;
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VolumeParam v;
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} pb;
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static char cwd[2*MAXPATH];
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unsigned char namebuf[MAXPATH];
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short err;
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int dir;
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long dirid;
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char *next= cwd + sizeof cwd - 1;
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int len;
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if (!hfsrunning())
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return -1;
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dir = fsp->vRefNum;
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dirid = fsp->parID;
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/* Stuff the filename into the buffer */
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len = fsp->name[0];
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*next = '\0';
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next -= len+1;
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memcpy(next, &fsp->name[1], len);
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for (;;) {
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pb.d.ioNamePtr= namebuf;
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pb.d.ioVRefNum= dir;
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pb.d.ioFDirIndex= -1;
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pb.d.ioDrDirID= dirid;
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err= PBGetCatInfo((CInfoPBPtr)&pb.d, 0);
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if (err != noErr) {
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return err;
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}
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*--next= SEP;
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len= namebuf[0];
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if ( len + strlen(next) >= MAXPATH )
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return -1;
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next -= len;
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memcpy(next, (char *)namebuf+1, len);
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if (pb.d.ioDrDirID == ROOTID)
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break;
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dirid= pb.d.ioDrParID;
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}
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strcpy(retbuf, next);
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return 0;
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}
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