import json import logging logger = logging.getLogger(__name__) class Bookmark(object): def __init__(self, j): self.name = j["name"] self.frequency = j["frequency"] self.modulation = j["modulation"] def getName(self): return self.name def getFrequency(self): return self.frequency def getModulation(self): return self.modulation def __dict__(self): return { "name": self.getName(), "frequency": self.getFrequency(), "modulation": self.getModulation(), } class Bookmarks(object): sharedInstance = None @staticmethod def getSharedInstance(): if Bookmarks.sharedInstance is None: Bookmarks.sharedInstance = Bookmarks() return Bookmarks.sharedInstance def __init__(self): self.bookmarks = self.loadBookmarks() def loadBookmarks(self): for file in ["/etc/openwebrx/bookmarks.json", "bookmarks.json"]: try: f = open(file, "r") bookmarks_json = json.load(f) f.close() return [Bookmark(d) for d in bookmarks_json] except FileNotFoundError: pass except json.JSONDecodeError: logger.exception("error while parsing bookmarks from %s", file) return [] return [] def getBookmarks(self, range): (lo, hi) = range return [b for b in self.bookmarks if lo <= b.getFrequency() <= hi]