C++ Directory::GetName方法代码示例

String Directory::MakePathName(bool addSepFlag, const char *pathNameTrail) const
{
	String pathName(_name);
	for (Directory *pDirectory = GetParent(); pDirectory != nullptr;
										pDirectory = pDirectory->GetParent()) {
		// a "boundary container" directory may have an empty name
		if (*pDirectory->GetName() != '\0' || pDirectory->IsRootContainer()) {
			String str(pDirectory->GetName());
			size_t len = str.size();
			if (len == 0 || !IsFileSeparator(str[len - 1])) {
				str += pDirectory->GetSeparator();
			}
			str += pathName;
			pathName = str;
		}
	}
	if (pathNameTrail != nullptr) {
		size_t len = pathName.size();
		if (len == 0 || !IsFileSeparator(pathName[len - 1])) {
			pathName += GetSeparator();
		}
		for (const char *p = pathNameTrail; *p != '\0'; p++) {
			char ch = IsFileSeparator(*p)? GetSeparator() : *p;
			pathName += ch;
		}
	} else if (addSepFlag && IsContainer() && !_name.empty()) {
		size_t len = pathName.size();
		if (len > 0 && !IsFileSeparator(pathName[len - 1])) {
			pathName += GetSeparator();
		}
	}
	return pathName;
}

static Menu *
add_boot_volume_menu(Directory *bootVolume)
{
    Menu *menu = new(nothrow) Menu(CHOICE_MENU, "Select Boot Volume");
    MenuItem *item;
    void *cookie;
    int32 count = 0;

    if (gRoot->Open(&cookie, O_RDONLY) == B_OK) {
        Directory *volume;
        while (gRoot->GetNextNode(cookie, (Node **)&volume) == B_OK) {
            // only list bootable volumes
            if (!is_bootable(volume))
                continue;

            char name[B_FILE_NAME_LENGTH];
            if (volume->GetName(name, sizeof(name)) == B_OK) {
                menu->AddItem(item = new(nothrow) MenuItem(name));
                item->SetTarget(user_menu_boot_volume);
                item->SetData(volume);

                if (volume == bootVolume) {
                    item->SetMarked(true);
                    item->Select(true);
                }

                count++;
            }
        }
        gRoot->Close(cookie);
    }

    if (count == 0) {
        // no boot volume found yet
        menu->AddItem(item = new(nothrow) MenuItem("<No boot volume found>"));
        item->SetType(MENU_ITEM_NO_CHOICE);
        item->SetEnabled(false);
    }

    menu->AddSeparatorItem();

    menu->AddItem(item = new(nothrow) MenuItem("Rescan volumes"));
    item->SetHelpText("Please insert a Antares CD-ROM or attach a USB disk - "
                      "depending on your system, you can then boot from them.");
    item->SetType(MENU_ITEM_NO_CHOICE);
    if (count == 0)
        item->Select(true);

    menu->AddItem(item = new(nothrow) MenuItem("Return to main menu"));
    item->SetType(MENU_ITEM_NO_CHOICE);

    if (gKernelArgs.boot_volume.GetBool(BOOT_VOLUME_BOOTED_FROM_IMAGE, false))
        menu->SetChoiceText("CD-ROM or hard drive");

    return menu;
}

status_t
mount_file_systems(stage2_args *args)
{
	// mount other partitions on boot device (if any)
	NodeIterator iterator = gPartitions.GetIterator();

	Partition *partition = NULL;
	while ((partition = (Partition *)iterator.Next()) != NULL) {
		// don't scan known partitions again
		if (partition->IsFileSystem())
			continue;

		// remove the partition if it doesn't contain a (known) file system
		if (partition->Scan(true) != B_OK && !partition->IsFileSystem()) {
			gPartitions.Remove(partition);
			delete partition;
		}
	}

	// add all block devices the platform has for us

	status_t status = platform_add_block_devices(args, &gBootDevices);
	if (status < B_OK)
		return status;

	iterator = gBootDevices.GetIterator();
	Node *device = NULL, *last = NULL;
	while ((device = iterator.Next()) != NULL) {
		// don't scan former boot device again
		if (device == sBootDevice)
			continue;

		if (add_partitions_for(device, true) == B_OK) {
			// ToDo: we can't delete the object here, because it must
			//	be removed from the list before we know that it was
			//	deleted.

/*			// if the Release() deletes the object, we need to skip it
			if (device->Release() > 0) {
				list_remove_item(&gBootDevices, device);
				device = last;
			}
*/
(void)last;
		}
		last = device;
	}

	if (gPartitions.IsEmpty())
		return B_ENTRY_NOT_FOUND;

#if 0
	void *cookie;
	if (gRoot->Open(&cookie, O_RDONLY) == B_OK) {
		Directory *directory;
		while (gRoot->GetNextNode(cookie, (Node **)&directory) == B_OK) {
			char name[256];
			if (directory->GetName(name, sizeof(name)) == B_OK)
				printf(":: %s (%p)\n", name, directory);

			void *subCookie;
			if (directory->Open(&subCookie, O_RDONLY) == B_OK) {
				while (directory->GetNextEntry(subCookie, name, sizeof(name)) == B_OK) {
					printf("\t%s\n", name);
				}
				directory->Close(subCookie);
			}
		}
		gRoot->Close(cookie);
	}
#endif

	return B_OK;
}

static Menu*
add_save_debug_syslog_menu()
{
	Menu* menu = new(nothrow) Menu(STANDARD_MENU, "Save syslog to volume ...");
	MenuItem* item;

	const char* const kHelpText = "Currently only FAT32 volumes are supported. "
		"Newly plugged in removable devices are only recognized after "
		"rebooting.";

	int32 itemsAdded = 0;

	void* cookie;
	if (gRoot->Open(&cookie, O_RDONLY) == B_OK) {
		Node* node;
		while (gRoot->GetNextNode(cookie, &node) == B_OK) {
			Directory* volume = static_cast<Directory*>(node);
			Partition* partition;
			if (gRoot->GetPartitionFor(volume, &partition) != B_OK)
				continue;

			// we support only FAT32 volumes ATM
			if (partition->content_type == NULL
				|| strcmp(partition->content_type, kPartitionTypeFAT32) != 0) {
				continue;
			}

			char name[B_FILE_NAME_LENGTH];
			if (volume->GetName(name, sizeof(name)) != B_OK)
				strcpy(name, "unnamed");

			// append offset, size, and type to the name
			size_t len = strlen(name);
			char offsetBuffer[32];
			char sizeBuffer[32];
			snprintf(name + len, sizeof(name) - len,
				" (%s, offset %s, size %s)", partition->content_type,
				size_to_string(partition->offset, offsetBuffer,
					sizeof(offsetBuffer)),
				size_to_string(partition->size, sizeBuffer,
					sizeof(sizeBuffer)));

			item = new(nothrow) MenuItem(name);
			item->SetData(volume);
			item->SetTarget(&debug_menu_save_syslog);
			item->SetType(MENU_ITEM_NO_CHOICE);
			item->SetHelpText(kHelpText);
			menu->AddItem(item);
			itemsAdded++;
		}

		gRoot->Close(cookie);
	}

	if (itemsAdded == 0) {
		menu->AddItem(item
			= new(nothrow) MenuItem("No supported volumes found"));
		item->SetType(MENU_ITEM_NO_CHOICE);
		item->SetHelpText(kHelpText);
		item->SetEnabled(false);
	}

	menu->AddSeparatorItem();
	menu->AddItem(item = new(nothrow) MenuItem("Return to debug menu"));
	item->SetHelpText(kHelpText);

	return menu;
}