boolean getfilecomment (FSSpec *pfs, bigstring bscomment) {
DTPBRec dt;
clearbytes (&dt, longsizeof (dt));
setemptystring (bscomment); /*default return*/
if (!hasdesktopmanager ((*pfs).vRefNum))
return (false);
dt.ioVRefNum = (*pfs).vRefNum;
if (PBDTGetPath (&dt) != noErr)
return (false);
dt.ioNamePtr = (*pfs).name;
dt.ioDirID = (*pfs).parID;
dt.ioDTBuffer = (Ptr) bscomment + 1;
dt.ioDTReqCount = lenbigstring;
if (PBDTGetCommentSync (&dt) != noErr)
return (false);
setstringlength (bscomment, dt.ioDTActCount);
return (true);
} /*getfilecomment*/
pascal OSErr DTGetComment(short vRefNum,
long dirID,
ConstStr255Param name,
Str255 comment)
{
DTPBRec pb;
OSErr error;
short dtRefNum;
Boolean newDTDatabase;
if (comment != NULL)
{
comment[0] = 0; /* return nothing by default */
/* attempt to open the desktop database */
error = DTOpen(name, vRefNum, &dtRefNum, &newDTDatabase);
if ( error == noErr )
{
/* There was a desktop database and it's now open */
if ( !newDTDatabase )
{
pb.ioDTRefNum = dtRefNum;
pb.ioNamePtr = (StringPtr)name;
pb.ioDirID = dirID;
pb.ioDTBuffer = (Ptr)&comment[1];
/*
** IMPORTANT NOTE #1: Inside Macintosh says that comments
** are up to 200 characters. While that may be correct for
** the HFS file system's Desktop Manager, other file
** systems (such as Apple Photo Access) return up to
** 255 characters. Make sure the comment buffer is a Str255
** or you'll regret it.
**
** IMPORTANT NOTE #2: Although Inside Macintosh doesn't
** mention it, ioDTReqCount is a input field to
** PBDTGetCommentSync. Some file systems (like HFS) ignore
** ioDTReqCount and always return the full comment --
** others (like AppleShare) respect ioDTReqCount and only
** return up to ioDTReqCount characters of the comment.
*/
pb.ioDTReqCount = sizeof(Str255) - 1;
error = PBDTGetCommentSync(&pb);
if (error == noErr)
{
comment[0] = (unsigned char)pb.ioDTActCount;
}
}
}
else
{
/* There is no desktop database - try the Desktop file */
error = GetCommentFromDesktopFile(vRefNum, dirID, name, comment);
if ( error != noErr )
{
error = afpItemNotFound; /* return an expected error */
}
}
}
else
{
error = paramErr;
}
return (error);
}
static void PrintFileComment (char *path)
{
#if !__LP64__
OSErr err = noErr;
FSRef fileRef;
FSSpec fileSpec;
DTPBRec dt;
char buf[255] = "\0";
char comment[255] = "\0";
//see if the file in question exists and we can write it
if (access(path, R_OK|F_OK) == -1)
{
perror(path);
return;
}
//get file reference from path
err = FSPathMakeRef(path, &fileRef, NULL);
if (err != noErr)
{
fprintf(stderr, "FSPathMakeRef: Error %d for file %s\n", err, path);
return;
}
//retrieve filespec from file ref
err = FSGetCatalogInfo (&fileRef, NULL, NULL, NULL, &fileSpec, NULL);
if (err != noErr)
{
fprintf(stderr, "FSGetCatalogInfo(): Error %d getting file spec for %s\n", err, path);
return;
}
///////////// oK, now we can go about getting the comment /////////////
dt.ioVRefNum = fileSpec.vRefNum;
err = PBDTGetPath(&dt);
if (err != noErr)
{
fprintf(stderr, "Can't get OS 9 comments for %s\n", path);
return;
}
//fill in the relevant fields (using parameters)
dt.ioNamePtr = fileSpec.name;
dt.ioDirID = fileSpec.parID;
dt.ioDTBuffer = (char *)&buf;
PBDTGetCommentSync(&dt);
if (dt.ioDTActCount != 0) //if zero, that means no comment
{
strncpy((char *)&comment, (char *)&buf, dt.ioDTActCount);
if (!printFileName)
printf("%s\n", (char *)&comment);
else
printf("Comment for '%s':\n%s\n", path, (char *)&comment);
}
return;
#endif
}
