Method enumxattr

Sming/Libraries/Spiffs/src/FileMeta.cpp:45–83

}

int SpiffsMetaBuffer::enumxattr(const AttributeEnumCallback& callback, void* buffer, size_t bufsize)
{
	size_t count{0};
	AttributeEnum e{buffer, bufsize};

	for(unsigned i = 0; i < unsigned(AttributeTag::User); ++i) {
		auto tag = AttributeTag(i);
		if(isDefaultValue(tag)) {
			continue;
		}
		auto value = meta.getAttributePtr(tag);
		if(value == nullptr) {
			continue;
		}
		e.set(tag, value, getAttributeSize(tag));
		++count;
		if(!callback(e)) {
			return count;
		}
	}

#if SPIFFS_USER_METALEN
	for(unsigned i = 0; i < SPIFFS_USER_METALEN;) {
		uint8_t tagIndex = user[i++];
		uint8_t tagSize = user[i++];
		if(tagIndex == 0xff && tagSize == 0xff) {
			break;
		}
		e.set(AttributeTag(unsigned(AttributeTag::User) + tagIndex), &user[i], tagSize);
		++count;
		if(!callback(e)) {
			break;
		}
		i += tagSize;
	}
#endif

	return count;
}

int SpiffsMetaBuffer::getxattr(AttributeTag tag, void* buffer, size_t size)
{