OSStatus CAComponent::GetResourceVersion (UInt32 &outVersion) const
{
bool versionFound = false;
ResFileRefNum componentResFileID = kResFileNotOpened;
OSStatus result;
short thngResourceCount;
short curRes = CurResFile();
require_noerr (result = OpenAComponentResFile( mComp, &componentResFileID), home);
require_noerr (result = componentResFileID <= 0, home);
UseResFile(componentResFileID);
thngResourceCount = Count1Resources(kComponentResourceType);
require_noerr (result = ResError(), home);
// only go on if we successfully found at least 1 thng resource
require_noerr (thngResourceCount <= 0 ? -1 : 0, home);
// loop through all of the Component thng resources trying to
// find one that matches this Component description
for (short i = 0; i < thngResourceCount && (!versionFound); i++)
{
// try to get a handle to this code resource
Handle thngResourceHandle = Get1IndResource(kComponentResourceType, i+1);
if (thngResourceHandle != NULL && ((*thngResourceHandle) != NULL))
{
if (UInt32(GetHandleSize(thngResourceHandle)) >= sizeof(ExtComponentResource))
{
ExtComponentResource * componentThng = (ExtComponentResource*) (*thngResourceHandle);
// check to see if this is the thng resource for the particular Component that we are looking at
// (there often is more than one Component described in the resource)
if ((componentThng->cd.componentType == mDesc.Type())
&& (componentThng->cd.componentSubType == mDesc.SubType())
&& (componentThng->cd.componentManufacturer == mDesc.Manu()))
{
outVersion = componentThng->componentVersion;
versionFound = true;
}
}
ReleaseResource(thngResourceHandle);
}
}
if (!versionFound)
result = resNotFound;
UseResFile(curRes); // revert
if ( componentResFileID != kResFileNotOpened )
CloseComponentResFile(componentResFileID);
home:
return result;
}
static PyObject *Cm_CloseComponentResFile(PyObject *_self, PyObject *_args)
{
PyObject *_res = NULL;
OSErr _err;
short refnum;
#ifndef CloseComponentResFile
PyMac_PRECHECK(CloseComponentResFile);
#endif
if (!PyArg_ParseTuple(_args, "h",
&refnum))
return NULL;
_err = CloseComponentResFile(refnum);
if (_err != noErr) return PyMac_Error(_err);
Py_INCREF(Py_None);
_res = Py_None;
return _res;
}
