added 'settings' command for querying scrapy settings

scrapy/command/commands/settings.py

@@ -0,0 +1,48 @@
+from scrapy.command import ScrapyCommand
+from scrapy.conf import settings as settings_
+
+class Command(ScrapyCommand):
+
+    requires_project = False
+
+    def syntax(self):
+        return "[options]"
+
+    def short_desc(self):
+        return "Query Scrapy settings"
+
+    def add_options(self, parser):
+        ScrapyCommand.add_options(self, parser)
+        parser.add_option("--get", dest="get", metavar="SETTING", \
+            help="print raw setting value")
+        parser.add_option("--getbool", dest="getbool", metavar="SETTING", \
+            help="print setting value, intepreted as a boolean")
+        parser.add_option("--getint", dest="getint", metavar="SETTING", \
+            help="print setting value, intepreted as an integer")
+        parser.add_option("--getfloat", dest="getfloat", metavar="SETTING", \
+            help="print setting value, intepreted as an float")
+        parser.add_option("--getlist", dest="getlist", metavar="SETTING", \
+            help="print setting value, intepreted as an float")
+        parser.add_option("--init", dest="init", action="store_true", \
+            help="print initial setting value (before loading extensions and spiders)")
+
+    def process_options(self, args, opts):
+        super(Command, self).process_options(args, opts)
+        if opts.init:
+            self._print_setting(opts)
+
+    def run(self, args, opts):
+        if not opts.init:
+            self._print_setting(opts)
+
+    def _print_setting(self, opts):
+        if opts.get:
+            print settings_.get(opts.get)
+        elif opts.getbool:
+            print settings_.getbool(opts.getbool)
+        elif opts.getint:
+            print settings_.getint(opts.getint)
+        elif opts.getfloat:
+            print settings_.getfloat(opts.getfloat)
+        elif opts.getlist:
+            print settings_.getlist(opts.getlist)

scrapy/conf/commands/settings.py

@@ -0,0 +1 @@
+LOG_ENABLED = False