| /* |
| ** FindApplicationFromCreator uses the Desktop Database to |
| ** locate the creator application for the given document |
| ** |
| ** this routine will check the desktop database of all local |
| ** disks, then the desktop databases of all server volumes |
| ** (so up to two passes will be made) |
| ** |
| ** This code was created from FindApplicationFromDocument |
| ** routine, origin unknown. |
| */ |
| |
| #include <Types.h> |
| #include <Files.h> |
| #include <Errors.h> |
| #include "getapplbycreator.h" |
| |
| |
| OSErr FindApplicationFromCreator(OSType creator, |
| FSSpecPtr applicationFSSpecPtr) |
| { |
| enum { localPass, remotePass, donePass } volumePass; |
| DTPBRec desktopParams; |
| HParamBlockRec hfsParams; |
| short volumeIndex; |
| Boolean foundFlag; |
| GetVolParmsInfoBuffer volumeInfoBuffer; |
| OSErr retCode; |
| |
| /* dkj 12/94 initialize flag to false (thanks to Peter Baral for pointing out this bug) */ |
| foundFlag = false; |
| |
| volumePass = localPass; |
| volumeIndex = 0; |
| |
| do { |
| /* |
| ** first, find the vRefNum of the volume whose Desktop Database |
| ** we're checking this time |
| */ |
| |
| volumeIndex++; |
| |
| /* convert the volumeIndex into a vRefNum */ |
| |
| hfsParams.volumeParam.ioNamePtr = nil; |
| hfsParams.volumeParam.ioVRefNum = 0; |
| hfsParams.volumeParam.ioVolIndex = volumeIndex; |
| retCode = PBHGetVInfoSync(&hfsParams); |
| |
| /* a nsvErr indicates that the current pass is over */ |
| if (retCode == nsvErr) goto SkipThisVolume; |
| if (retCode != noErr) goto Bail; |
| |
| /* |
| ** call GetVolParms to determine if this volume is a server |
| ** (a remote volume) |
| */ |
| |
| hfsParams.ioParam.ioBuffer = (Ptr) &volumeInfoBuffer; |
| hfsParams.ioParam.ioReqCount = sizeof(GetVolParmsInfoBuffer); |
| retCode = PBHGetVolParmsSync(&hfsParams); |
| if (retCode != noErr) goto Bail; |
| |
| /* |
| ** if the vMServerAdr field of the volume information buffer |
| ** is zero, this is a local volume; skip this volume |
| ** if it's local on a remote pass or remote on a local pass |
| */ |
| |
| if ((volumeInfoBuffer.vMServerAdr != 0) != |
| (volumePass == remotePass)) goto SkipThisVolume; |
| |
| /* okay, now we've found the vRefNum for our desktop database call */ |
| |
| desktopParams.ioVRefNum = hfsParams.volumeParam.ioVRefNum; |
| |
| /* |
| ** find the path refNum for the desktop database for |
| ** the volume we're interested in |
| */ |
| |
| desktopParams.ioNamePtr = nil; |
| |
| retCode = PBDTGetPath(&desktopParams); |
| if (retCode == noErr && desktopParams.ioDTRefNum != 0) { |
| |
| /* |
| ** use the GetAPPL call to find the preferred application |
| ** for opening any document with this one's creator |
| */ |
| |
| desktopParams.ioIndex = 0; |
| desktopParams.ioFileCreator = creator; |
| desktopParams.ioNamePtr = applicationFSSpecPtr->name; |
| retCode = PBDTGetAPPLSync(&desktopParams); |
| |
| if (retCode == noErr) { |
| /* |
| ** okay, found it; fill in the application file spec |
| ** and set the flag indicating we're done |
| */ |
| |
| applicationFSSpecPtr->parID = desktopParams.ioAPPLParID; |
| applicationFSSpecPtr->vRefNum = desktopParams.ioVRefNum; |
| foundFlag = true; |
| |
| } |
| } |
| |
| SkipThisVolume: |
| /* |
| ** if retCode indicates a no such volume error or if this |
| ** was the first pass, it's time to move on to the next pass |
| */ |
| |
| if (retCode == nsvErr) { |
| volumePass++; |
| volumeIndex = 0; |
| } |
| |
| } while (foundFlag == false && volumePass != donePass); |
| |
| Bail: |
| if (retCode == nsvErr) |
| return fnfErr; /* More logical than "No such volume" */ |
| return retCode; |
| } |