add json check before compile (#354)

* add json check before compile

* do more checking on effects

* add effects checking

* better effects checking.

* integrate schema check for default config
reduce size of default configs

test/jsonchecks/checkeffects.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+import json, sys, glob
+from os import path
+from jsonschema import Draft3Validator
+
+print("-- validate json effect files")
+
+jsonFiles = sys.argv[1]
+schemaFiles = sys.argv[2]
+
+retval  = 0 
+total   = 0
+errors  = 0
+with open("libsrc/effectengine/EffectDefinition.schema.json") as baseSchemaFile:
+	baseSchema = json.load(baseSchemaFile)
+	baseValidator = Draft3Validator(baseSchema)
+	for filename in glob.glob(jsonFiles+'/*.json'):
+		with open(filename) as f:
+			total += 1
+			msg = "   check effect %s ... " % filename
+			try:
+				effect = json.load(f)
+				script = path.basename(effect['script'])
+				if not path.exists(jsonFiles+'/'+script):
+					raise ValueError('script file: '+script+' not found.')
+
+				schema = path.splitext(script)[0]+'.schema.json'
+				if not path.exists(jsonFiles+'/schema/'+schema):
+					raise ValueError('schema file: '+schema+' not found.')
+				schema = jsonFiles+'/schema/'+schema
+				
+				# validate against schema
+				with open(schema) as s:
+					effectSchema = json.load(s)
+					Draft3Validator.check_schema(effectSchema)
+					validator = Draft3Validator(effectSchema)
+					baseValidator.validate(effect)
+					validator.validate(effect['args'])
+				
+				#print(msg + "ok")
+
+			except Exception as e:
+				print(msg + 'error ('+str(e)+')')
+				errors += 1
+				retval = 1
+			
+
+print("   checked effect files: %s success: %s errors: %s" % (total,(total-errors),errors))
+
+sys.exit(retval)