GaoreGo/cast
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adding back default statements and adding comments and cleanups

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This commit is contained in:
jackspirou 2015-07-31 13:57:57 -05:00
parent 9b6ca94623
commit 7baba5353a
1 changed files with 23 additions and 19 deletions
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42
caste.go
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@ -6,7 +6,6 @@
package cast
import (
"errors"
"fmt"
"html/template"
"reflect"
@ -17,6 +16,7 @@ import (
jww "github.com/spf13/jwalterweatherman"
)
// ToTimeE casts an empty interface to time.Time.
func ToTimeE(i interface{}) (tim time.Time, err error) {
i = indirect(i)
jww.DEBUG.Println("ToTimeE called on type:", reflect.TypeOf(i))
@ -35,6 +35,7 @@ func ToTimeE(i interface{}) (tim time.Time, err error) {
}
}
// ToDurationE casts an empty interface to time.Duration.
func ToDurationE(i interface{}) (d time.Duration, err error) {
i = indirect(i)
jww.DEBUG.Println("ToDurationE called on type:", reflect.TypeOf(i))
@ -51,6 +52,7 @@ func ToDurationE(i interface{}) (d time.Duration, err error) {
}
}
// ToBoolE casts an empty interface to a bool.
func ToBoolE(i interface{}) (bool, error) {
i = indirect(i)
jww.DEBUG.Println("ToBoolE called on type:", reflect.TypeOf(i))
@ -72,6 +74,7 @@ func ToBoolE(i interface{}) (bool, error) {
}
}
// ToFloat64E casts an empty interface to a float64.
func ToFloat64E(i interface{}) (float64, error) {
i = indirect(i)
jww.DEBUG.Println("ToFloat64E called on type:", reflect.TypeOf(i))
@ -95,14 +98,14 @@ func ToFloat64E(i interface{}) (float64, error) {
v, err := strconv.ParseFloat(s, 64)
if err == nil {
return float64(v), nil
} else {
return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
}
return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
default:
return 0.0, fmt.Errorf("Unable to Cast %#v to float", i)
}
}
// ToIntE casts an empty interface to an int.
func ToIntE(i interface{}) (int, error) {
i = indirect(i)
jww.DEBUG.Println("ToIntE called on type:", reflect.TypeOf(i))
@ -122,17 +125,15 @@ func ToIntE(i interface{}) (int, error) {
v, err := strconv.ParseInt(s, 0, 0)
if err == nil {
return int(v), nil
} else {
return 0, fmt.Errorf("Unable to Cast %#v to int", i)
}
return 0, fmt.Errorf("Unable to Cast %#v to int", i)
case float64:
return int(s), nil
case bool:
if bool(s) {
return 1, nil
} else {
return 0, nil
}
return 0, nil
case nil:
return 0, nil
default:
@ -179,6 +180,7 @@ func indirectToStringerOrError(a interface{}) interface{} {
return v.Interface()
}
// ToStringE casts an empty interface to a string.
func ToStringE(i interface{}) (string, error) {
i = indirectToStringerOrError(i)
jww.DEBUG.Println("ToStringE called on type:", reflect.TypeOf(i))
@ -205,6 +207,7 @@ func ToStringE(i interface{}) (string, error) {
}
}
// ToStringMapStringE casts an empty interface to a map[string]string.
func ToStringMapStringE(i interface{}) (map[string]string, error) {
jww.DEBUG.Println("ToStringMapStringE called on type:", reflect.TypeOf(i))
@ -231,9 +234,9 @@ func ToStringMapStringE(i interface{}) (map[string]string, error) {
default:
return m, fmt.Errorf("Unable to Cast %#v to map[string]string", i)
}
return m, fmt.Errorf("Unable to Cast %#v to map[string]string", i)
}
// ToStringMapStringSliceE casts an empty interface to a map[string][]string.
func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
jww.DEBUG.Println("ToStringMapStringSliceE called on type:", reflect.TypeOf(i))
@ -283,10 +286,13 @@ func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
}
m[key] = value
}
default:
return m, fmt.Errorf("Unable to Cast %#v to map[string][]string", i)
}
return m, nil
}
// ToStringMapBoolE casts an empty interface to a map[string]bool.
func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
jww.DEBUG.Println("ToStringMapBoolE called on type:", reflect.TypeOf(i))
@ -308,9 +314,9 @@ func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
default:
return m, fmt.Errorf("Unable to Cast %#v to map[string]bool", i)
}
return m, fmt.Errorf("Unable to Cast %#v to map[string]bool", i)
}
// ToStringMapE casts an empty interface to a map[string]interface{}.
func ToStringMapE(i interface{}) (map[string]interface{}, error) {
jww.DEBUG.Println("ToStringMapE called on type:", reflect.TypeOf(i))
@ -327,10 +333,9 @@ func ToStringMapE(i interface{}) (map[string]interface{}, error) {
default:
return m, fmt.Errorf("Unable to Cast %#v to map[string]interface{}", i)
}
return m, fmt.Errorf("Unable to Cast %#v to map[string]interface{}", i)
}
// ToSliceE casts an empty interface to a []interface{}.
func ToSliceE(i interface{}) ([]interface{}, error) {
jww.DEBUG.Println("ToSliceE called on type:", reflect.TypeOf(i))
@ -350,10 +355,9 @@ func ToSliceE(i interface{}) ([]interface{}, error) {
default:
return s, fmt.Errorf("Unable to Cast %#v of type %v to []interface{}", i, reflect.TypeOf(i))
}
return s, fmt.Errorf("Unable to Cast %#v to []interface{}", i)
}
// ToStringSliceE casts an empty interface to a []string.
func ToStringSliceE(i interface{}) ([]string, error) {
jww.DEBUG.Println("ToStringSliceE called on type:", reflect.TypeOf(i))
@ -369,17 +373,18 @@ func ToStringSliceE(i interface{}) ([]string, error) {
return v, nil
case string:
return strings.Fields(v), nil
default:
case interface{}:
str, err := ToStringE(v)
if err != nil {
return a, fmt.Errorf("Unable to Cast %#v to []string", i)
}
return []string{str}, nil
}
default:
return a, fmt.Errorf("Unable to Cast %#v to []string", i)
}
}
// ToIntSliceE casts an empty interface to a []int.
func ToIntSliceE(i interface{}) ([]int, error) {
jww.DEBUG.Println("ToIntSliceE called on type:", reflect.TypeOf(i))
@ -408,10 +413,9 @@ func ToIntSliceE(i interface{}) ([]int, error) {
default:
return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i)
}
return []int{}, fmt.Errorf("Unable to Cast %#v to []int", i)
}
// StringToDate casts an empty interface to a time.Time.
func StringToDate(s string) (time.Time, error) {
return parseDateWith(s, []string{
time.RFC3339,
@ -436,5 +440,5 @@ func parseDateWith(s string, dates []string) (d time.Time, e error) {
return
}
}
return d, errors.New(fmt.Sprintf("Unable to parse date: %s", s))
return d, fmt.Errorf("Unable to parse date: %s", s)
}