[openbeos] Re: Translation Kit woes
- From: "Michael Phipps" <mphipps1@xxxxxxxxxxxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Mon, 22 Apr 2002 23:05:11 -0400
Just on a hunch, do you have a BApplication active when this is faliing?
>Noone from the Translation Kit team could figure this one out, so I
>thought that I would take my question to the "main" list.
>
>I simply cannon instantiate a BTranslatorRoster.
>
>Ordinarily BArchivable extended classes, may be archived using the
>Archive(BMessage* message) method and instantiated using the
>Instantiate(BMessage* message) method.
>
>Thus the following should work fine (it does not!)
>BTranslatorRoster* translator_roster = NULL;
>BMessage translator_message;
>
>translator_roster = new BTranslatorRoster();
>translator_roster->AddTranslators("/boot/home/config/add-ons/
>Translators/");
>..
>//verify that translators are actually loaded
>..
>
>//archive the sucker
>translator_roster->Archive(&translator_message);
>
>//delete old translator_roster and reinstantiate
>delete translator_roster;
>translator_roster = (BTranslatorRoster*)
>BTranslatorRoster::Instantiate(&translator_message);
>
>translator_roster is now NULL - how come????
>
>Ok, so I tested an alternative, reading the docs
>BTranslatorRoster::Instantiate says:
>Returns a new BTranslatorRoster object, allocated by new and created
>with the version of the constructor that takes a BMessage archive.
>However, if the archive doesn't contain data for a BTranslatorRoster
>object, Instantiate() returns NULL
>
>If this is the case - then the following should work:
>
>translator_message.AddString("be:translator_path", "/boot/home/config/
>add-ons/Translators/");
>translator_roster = (BTranslatorRoster*)
>BTranslatorRoster::Instantiate(&translator_message);
>
>but it doesn't *ponder!*
>
>the actual instantiate test is available from CVS (openbeos/sources/os/
>kits/translation/tests/)
> - the method in question is:
>status_t TranslatorRosterTest::InstantiateTest()
>however this only contains the latter of the tests. So for
>completeness, this is the first test:
>-- 8< --
>translator_roster = new BTranslatorRoster();
>translator_roster->AddTranslators("/boot/home/config/add-ons/
>Translators/");
>
> //write it to output
> if(translator_roster != NULL) {
> int32 num_translators;
> translator_id* translators;
> translator_roster->GetAllTranslators(&translators, &
>num_translators);
> if(num_translators <= 0) {
> Debug("Unable to load translators, or no translators
>installed\n");
> return B_ERROR;
> } else {
> printf("%ld translator(s) loaded\n", num_translators);
> }
> delete [] translators;
> } else {
> printf("Unable to instantiate translator roster\n");
> }
> translator_roster->Archive(&translator_message);
>
> delete translator_roster;
>
> //instantiate
> translator_roster = (BTranslatorRoster*)
>BTranslatorRoster::Instantiate(&translator_message);
>if(translator_roster != NULL) {
> int32 num_translators;
> translator_id* translators;
> translator_roster->GetAllTranslators(&translators, &
>num_translators);
> if(num_translators <= 0) {
> Debug("Unable to load translators, or no translators
>installed\n");
> return B_ERROR;
> } else {
> printf("%ld loaded\n", num_translators);
> }
> delete [] translators;
> } else {
> printf("Unable to instantiate translator roster\n");
> }
>-- 8< --
>
>
>
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