add bbc

worker/bbc.py

@@ -0,0 +1,54 @@
+from zzcore import StdAns
+
+class Ans(StdAns):
+    def GETMSG(self):
+        if len(self.parms) < 2:
+            return '不加参数是坏文明！'
+        try:
+            msg = str(bc(self.raw_msg['message'][5:]))
+        except Exception as e:
+            msg = str(e)
+        return msg
+
+def bc(formula):
+    formula = pure(formula)
+    try:
+        return float(formula)
+    except ValueError:
+        print(subFormula(formula))
+        subLift,subRight,flag = subFormula(formula)
+        return cal(bc(subLift),bc(subRight),flag)
+
+def pure(formula):
+    while(formula[0] == '(' or (formula[0] == '-' and formula[1] == '-')):
+        if formula[0] == '(':
+            formula == formula[1:]
+        else:
+            formula = formula[2:]
+    while(formula[len(formula) - 1] == ')'):
+        formula = formula[:len(formula) - 1]
+    
+    return formula
+
+def subFormula(formula):
+    start = 0
+    if formula[0]=='-':
+        start = 1
+    for index in range(start,len(formula)):
+        if formula[index] in ['*','/']:
+            lastxx = index
+        elif formula[index] == '+':
+            return formula[:index],formula[index+1:],'+'
+        elif formula[index] == '-' and formula[index-1] not in ['*','/']:
+            return formula[:index],formula[index:],'+'
+        elif formula[index] == '(':
+            return formula[:index-1],formula[index:],formula[index-1]
+    return formula[:lastxx],formula[lastxx+1:],formula[lastxx]
+
+def cal(f1,f2,flag):
+    do = {
+        '+':lambda x,y: x+y,
+        '*':lambda x,y: x*y,
+        '/':lambda x,y: x/y
+    }
+    return do[flag](f1,f2)