new numerical parsers

whparse/query.go

@@ -34,6 +34,45 @@ func OptInt64(val string, def int64) int64 {
 	return rv
 }
 
+// OptUint64 parses val and returns the integer value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptUint64(val string, def uint64) uint64 {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseUint(val, 10, 64)
+	if err != nil {
+		return def
+	}
+	return rv
+}
+
+// OptInt32 parses val and returns the integer value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptInt32(val string, def int32) int32 {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseInt(val, 10, 32)
+	if err != nil {
+		return def
+	}
+	return int32(rv)
+}
+
+// OptUint32 parses val and returns the integer value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptUint32(val string, def uint32) uint32 {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseUint(val, 10, 32)
+	if err != nil {
+		return def
+	}
+	return uint32(rv)
+}
+
 // OptInt parses val and returns the integer value in question, unless
 // parsing fails, in which case the default def is returned.
 func OptInt(val string, def int) int {
@@ -47,6 +86,19 @@ func OptInt(val string, def int) int {
 	return int(rv)
 }
 
+// OptUint parses val and returns the integer value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptUint(val string, def uint) uint {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseUint(val, 10, 0)
+	if err != nil {
+		return def
+	}
+	return uint(rv)
+}
+
 // OptBool parses val and returns the bool value in question, unless
 // parsing fails, in which case the default def is returned.
 func OptBool(val string, def bool) bool {
@@ -59,3 +111,29 @@ func OptBool(val string, def bool) bool {
 	}
 	return rv
 }
+
+// OptFloat64 parses val and returns the float value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptFloat64(val string, def float64) float64 {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseFloat(val, 64)
+	if err != nil {
+		return def
+	}
+	return rv
+}
+
+// OptFloat32 parses val and returns the float value in question, unless
+// parsing fails, in which case the default def is returned.
+func OptFloat32(val string, def float32) float32 {
+	if val == "" {
+		return def
+	}
+	rv, err := strconv.ParseFloat(val, 32)
+	if err != nil {
+		return def
+	}
+	return float32(rv)
+}