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commit
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1 changed files with 80 additions and 36 deletions
116
src/searchengine/nova3/nova2.py
Normal file → Executable file
116
src/searchengine/nova3/nova2.py
Normal file → Executable file
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@ -1,4 +1,4 @@
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#VERSION: 1.44
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#VERSION: 1.45
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# Author:
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# Fabien Devaux <fab AT gnux DOT info>
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@ -58,26 +58,58 @@ CATEGORIES = {'all', 'movies', 'tv', 'music', 'games', 'anime', 'software', 'pic
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################################################################################
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def initialize_engines():
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# global state
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engine_dict = dict()
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def list_engines():
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""" List all engines,
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including broken engines that fail on import
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Faster than initialize_engines
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Return list of all engines
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"""
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found_engines = []
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for engine_path in glob(path.join(path.dirname(__file__), 'engines', '*.py')):
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engine_name = path.basename(engine_path).split('.')[0].strip()
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if len(engine_name) == 0 or engine_name.startswith('_'):
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continue
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found_engines.append(engine_name)
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return found_engines
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def get_engine(engine_name):
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#global engine_dict
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if engine_name in engine_dict:
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return engine_dict[engine_name]
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# when import fails, engine is None
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engine = None
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try:
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# import engines.[engine]
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engine_module = importlib.import_module("engines." + engine_name)
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engine = getattr(engine_module, engine_name)
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except Exception:
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pass
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engine_dict[engine_name] = engine
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return engine
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def initialize_engines(found_engines):
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""" Import available engines
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Return list of available engines
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"""
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supported_engines = []
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engines = glob(path.join(path.dirname(__file__), 'engines', '*.py'))
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for engine in engines:
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engi = path.basename(engine).split('.')[0].strip()
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if len(engi) == 0 or engi.startswith('_'):
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for engine_name in found_engines:
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# import engine
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engine = get_engine(engine_name)
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if engine == None:
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continue
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try:
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# import engines.[engine]
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engine_module = importlib.import_module("engines." + engi)
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# bind class name
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globals()[engi] = getattr(engine_module, engi)
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supported_engines.append(engi)
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except Exception:
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pass
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supported_engines.append(engine_name)
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return supported_engines
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@ -86,8 +118,8 @@ def engines_to_xml(supported_engines):
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""" Generates xml for supported engines """
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tab = " " * 4
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for short_name in supported_engines:
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search_engine = globals()[short_name]()
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for engine_name in supported_engines:
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search_engine = get_engine(engine_name)
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supported_categories = ""
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if hasattr(search_engine, "supported_categories"):
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@ -95,11 +127,11 @@ def engines_to_xml(supported_engines):
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for key in search_engine.supported_categories.keys()
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if key != "all"))
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yield "".join((tab, "<", short_name, ">\n",
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yield "".join((tab, "<", engine_name, ">\n",
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tab, tab, "<name>", search_engine.name, "</name>\n",
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tab, tab, "<url>", search_engine.url, "</url>\n",
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tab, tab, "<categories>", supported_categories, "</categories>\n",
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tab, "</", short_name, ">\n"))
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tab, "</", engine_name, ">\n"))
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def displayCapabilities(supported_engines):
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@ -148,47 +180,59 @@ def main(args):
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if current_path not in sys.path:
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sys.path.append(current_path)
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supported_engines = initialize_engines()
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found_engines = list_engines()
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def show_usage():
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print("./nova2.py all|engine1[,engine2]* <category> <keywords>", file=sys.stderr)
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print("found engines: " + ','.join(found_engines), file=sys.stderr)
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print("to list available engines: ./nova2.py --capabilities [--names]", file=sys.stderr)
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if not args:
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raise SystemExit("./nova2.py [all|engine1[,engine2]*] <category> <keywords>\n"
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"available engines: %s" % (','.join(supported_engines)))
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show_usage()
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sys.exit(1)
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elif args[0] == "--capabilities":
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supported_engines = initialize_engines(found_engines)
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if "--names" in args:
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print(",".join(supported_engines))
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return
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displayCapabilities(supported_engines)
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return
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elif len(args) < 3:
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raise SystemExit("./nova2.py [all|engine1[,engine2]*] <category> <keywords>\n"
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"available engines: %s" % (','.join(supported_engines)))
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show_usage()
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sys.exit(1)
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cat = args[1].lower()
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if cat not in CATEGORIES:
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print(" - ".join(('Invalid category', cat)), file=sys.stderr)
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sys.exit(1)
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# get only unique engines with set
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engines_list = set(e.lower() for e in args[0].strip().split(','))
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if 'all' in engines_list:
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engines_list = supported_engines
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else:
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# discard un-supported engines
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engines_list = [engine for engine in engines_list
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if engine in supported_engines]
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if not engines_list:
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# engine list is empty. Nothing to do here
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return
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cat = args[1].lower()
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if cat not in CATEGORIES:
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raise SystemExit(" - ".join(('Invalid category', cat)))
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if 'all' in engines_list:
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# use all supported engines
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# note: this can be slower than passing a list of supported engines
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# because initialize_engines will also try to import not-supported engines
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engines_list = initialize_engines(found_engines)
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else:
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# discard not-found engines
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engines_list = [engine for engine in engines_list if engine in found_engines]
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what = urllib.parse.quote(' '.join(args[2:]))
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if THREADED:
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# child process spawning is controlled min(number of searches, number of cpu)
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with Pool(min(len(engines_list), MAX_THREADS)) as pool:
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pool.map(run_search, ([globals()[engine], what, cat] for engine in engines_list))
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pool.map(run_search, ([get_engine(engine_name), what, cat] for engine_name in engines_list))
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else:
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# py3 note: map is needed to be evaluated for content to be executed
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all(map(run_search, ([globals()[engine], what, cat] for engine in engines_list)))
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all(map(run_search, ([get_engine(engine_name), what, cat] for engine_name in engines_list)))
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if __name__ == "__main__":
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