boolean findapplication (short vnum, OSType creator, boolean flappsonly, FSSpec *pfs) {
/*
dmb 9/21/93: keep looping until an APPL is found, or PBDTGetAPPLSync
returns an error. (it will eventually return afpItemNotFound.)
dmb 9/24/93: added flappsonly parameter. a non-app, such as an extension
or desk accessory, can own a document type.
*/
DTPBRec dt;
bigstring appname;
tyfileinfo info;
if (!hasdesktopmanager (vnum))
return (false);
clearbytes (&dt, longsizeof (dt));
dt.ioVRefNum = vnum;
if (PBDTGetPath (&dt) != noErr)
return (false);
dt.ioNamePtr = (StringPtr) &appname;
dt.ioFileCreator = creator;
for (dt.ioIndex = 0; ; ++dt.ioIndex) {
if (PBDTGetAPPLSync (&dt) != noErr)
return (false);
if (!filemakespec (vnum, dt.ioAPPLParID, appname, pfs))
continue;
if (!fileexists (pfs))
continue;
if (!filegetinfo (pfs, &info))
continue;
if (!flappsonly) /*dmb 9/24/93: some callers don't require apps*/
return (true);
if (info.filetype == 'APPL') /*DW 9/16/93: desktop db can contain references to non-apps*/
return (true);
}
} /*findapplication*/
boolean findapponanydisk (OSType appid, FSSpec *fs) {
/*
find the app whose creator id is appid. return true if we found it,
false otherwise.
*/
DTPBRec dt;
ParamBlockRec pb;
Str255 appfname;
clearbytes (&pb, (long) sizeof (pb));
while (true) {
++pb.volumeParam.ioVolIndex;
if (PBGetVInfoSync (&pb) != noErr)
return (false);
if (!hasdesktopmanager (pb.volumeParam.ioVRefNum))
continue;
dt.ioNamePtr = NULL;
dt.ioVRefNum = pb.volumeParam.ioVRefNum;
if (PBDTGetPath (&dt) != noErr)
return (false);
dt.ioNamePtr = (StringPtr) &appfname;
dt.ioIndex = 0;
dt.ioFileCreator = appid;
if (PBDTGetAPPLSync (&dt) == noErr) {
if (FSMakeFSSpec (pb.volumeParam.ioVRefNum, dt.ioAPPLParID, appfname, fs) == noErr)
return (true);
}
} /*while*/
return (false);
} /*findapponanydisk*/
pascal OSErr DTXGetAPPL(ConstStr255Param volName,
short vRefNum,
OSType creator,
Boolean searchCatalog,
short *applVRefNum,
long *applParID,
Str255 applName)
{
OSErr error;
UniversalFMPB pb;
short dtRefNum;
Boolean newDTDatabase;
short realVRefNum;
short index;
Boolean applFound;
FSSpec spec;
long actMatchCount;
/* get the real vRefNum */
error = DetermineVRefNum(volName, vRefNum, &realVRefNum);
if ( error == noErr )
{
error = DTOpen(volName, vRefNum, &dtRefNum, &newDTDatabase);
if ( error == noErr )
{
if ( !newDTDatabase )
{
index = 0;
applFound = false;
do
{
pb.dtPB.ioNamePtr = applName;
pb.dtPB.ioDTRefNum = dtRefNum;
pb.dtPB.ioIndex = index;
pb.dtPB.ioFileCreator = creator;
error = PBDTGetAPPLSync(&pb.dtPB);
if ( error == noErr )
{
/* got a match - see if it is valid */
*applVRefNum = realVRefNum; /* get the vRefNum now */
*applParID = pb.dtPB.ioAPPLParID; /* get the parent ID now */
/* pb.hPB.fileParam.ioNamePtr is already set */
pb.hPB.fileParam.ioVRefNum = realVRefNum;
pb.hPB.fileParam.ioFVersNum = 0;
pb.hPB.fileParam.ioDirID = *applParID;
pb.hPB.fileParam.ioFDirIndex = 0; /* use ioNamePtr and ioDirID */
if ( PBHGetFInfoSync(&pb.hPB) == noErr )
{
if ( (pb.hPB.fileParam.ioFlFndrInfo.fdCreator == creator) &&
(pb.hPB.fileParam.ioFlFndrInfo.fdType == 'APPL') )
{
applFound = true;
}
}
}
++index;
} while ( (error == noErr) && !applFound );
if ( error != noErr )
{
error = afpItemNotFound;
}
}
else
{
/* Desktop database is empty (new), set error to try CatSearch */
error = afpItemNotFound;
}
}
/* acceptable errors from Desktop Manager to continue are paramErr or afpItemNotFound */
if ( error == paramErr )
{
/* if paramErr, the volume didn't support the Desktop Manager */
/* try the Desktop file */
error = GetAPPLFromDesktopFile(volName, vRefNum, creator,
applVRefNum, applParID, applName);
if ( error == noErr )
{
/* got a match - see if it is valid */
pb.hPB.fileParam.ioNamePtr = applName;
pb.hPB.fileParam.ioVRefNum = *applVRefNum;
pb.hPB.fileParam.ioFVersNum = 0;
pb.hPB.fileParam.ioDirID = *applParID;
pb.hPB.fileParam.ioFDirIndex = 0; /* use ioNamePtr and ioDirID */
if ( PBHGetFInfoSync(&pb.hPB) == noErr )
{
if ( (pb.hPB.fileParam.ioFlFndrInfo.fdCreator != creator) ||
(pb.hPB.fileParam.ioFlFndrInfo.fdType != 'APPL') )
{
error = afpItemNotFound;
}
}
else if ( error == fnfErr )
{
error = afpItemNotFound;
}
}
}
/* acceptable error from DesktopFile code to continue is afpItemNotFound */
if ( (error == afpItemNotFound) && searchCatalog)
{
/* Couldn't be found in the Desktop file either, */
/* try searching with CatSearch if requested */
error = CreatorTypeFileSearch(NULL, realVRefNum, creator, kAPPLResType, &spec, 1,
&actMatchCount, true);
if ( (error == noErr) || (error == eofErr) )
{
if ( actMatchCount > 0 )
{
*applVRefNum = spec.vRefNum;
*applParID = spec.parID;
BlockMoveData(spec.name, applName, spec.name[0] + 1);
}
else
{
error = afpItemNotFound;
}
}
}
}
return ( error );
}
