sharding/client: Changing Validate Body(ethereum#92)

Author: nisdas

sharding/client/utils.go

@@ -7,33 +7,64 @@ import (
 type collationbody []byte
 
 var (
-	collationsizelimit = int64(2 * *20)
+	collationsizelimit = int64(2 ^ 20)
 	chunkSize          = int64(32)
 	indicatorSize      = int64(1)
 	chunkDataSize      = chunkSize - indicatorSize
 )
 
-func (c *collationbody) validateBody() bool {
-	return len(c) < 2^20 && len(c) > 0
+/* Validate that the collation body is within its bounds and if
+the size of the body is below the limit it is simply appended
+till it reaches the required limit */
+
+func (cb collationbody) validateBody() error {
+
+	length := int64(len(cb))
+
+	if length == 0 {
+		return fmt.Errorf("Collation Body has to be a non-zero value")
+	}
+
+	if length > collationsizelimit {
+		return fmt.Errorf("Collation Body is over the size limit")
+	}
+
+	if length < collationsizelimit {
+		x := make([]byte, (collationsizelimit - length))
+		cb = append(cb, x...)
+		fmt.Printf("%b", x)
+
+	}
+
+	return nil
+}
+
+func main() {
+
+	x := []byte{'h', 'e', 'g', 'g'}
+	t := x.validateBody()
+	fmt.Printf("%b   %s", x, t)
+
 }
 
-func createChunks(c collationbody) {
-	validCollation, err := c.validateBody
+/*
+func createChunks(cb collationbody) {
+	validCollation := cb.validateBody
 	if err != nil {
 		fmt.Errorf("Error %v", err)
 	}
 	if !validCollation {
 		fmt.Errorf("Error %v", err)
 	}
-	index := int64(len(c)) / chunkDataSize
+	index := int64(len(cb)) / chunkDataSize
+
 
-	/*
 	   for i = 0; i < index; i++ {
 	   serialisedblob[i*chunksize] = 0
 	    for f = 0; f <chunkdatasize ; f++ {
 	   serialisedblob[(f+1) + i*chunksize] = collationbody[f + i*chunkdatasize]
 	   }
 	   serialisedblob[index*chunksize ] = len(collationbody) – index*chunkdatasize
-	   }*/
+	   }
 
-}
+} */