A fast pacakge for validation
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

150 lines
4.1 KiB

package validate
import (
"reflect"
"regexp"
"strings"
)
// ValidationFunc is a function to validate a field
type ValidationFunc func(reflect.Value, interface{}) bool
// Kinds is a map with validation funcs for each reflect.Kind
type Kinds map[reflect.Kind]ValidationFunc
type listFuncInfo struct {
inputFunc InputFunc
kinds Kinds
}
// AddRule adds a rule to the list of validation functions
func AddRule(name string, inputFunc InputFunc, kinds Kinds) {
funcs[name] = listFuncInfo{inputFunc, kinds}
}
// nolint: dupl
var funcs = map[string]listFuncInfo{
`required`: {nil, Kinds{
reflect.Ptr: func(rv reflect.Value, _ interface{}) bool {
return !rv.IsNil()
},
reflect.Interface: func(rv reflect.Value, _ interface{}) bool {
return !rv.IsNil()
},
reflect.Slice: func(rv reflect.Value, _ interface{}) bool {
return !rv.IsNil() && rv.Len() > 0
},
reflect.Map: func(rv reflect.Value, _ interface{}) bool {
return !rv.IsNil() && rv.Len() > 0
},
reflect.String: func(rv reflect.Value, _ interface{}) bool {
return rv.String() != ``
},
reflect.Int: func(rv reflect.Value, _ interface{}) bool {
return rv.Int() != 0
},
reflect.Uint: func(rv reflect.Value, _ interface{}) bool {
return rv.Uint() != 0
},
reflect.Float64: func(rv reflect.Value, _ interface{}) bool {
return rv.Float() != 0
},
}},
// Strings
`prefix`: {InputSame, Kinds{
reflect.String: func(rv reflect.Value, val interface{}) bool {
return strings.HasPrefix(rv.String(), val.(string))
},
}},
`suffix`: {InputSame, Kinds{
reflect.String: func(rv reflect.Value, val interface{}) bool {
return strings.HasSuffix(rv.String(), val.(string))
},
}},
`contains`: {InputSame, Kinds{
reflect.String: func(rv reflect.Value, val interface{}) bool {
return strings.Contains(rv.String(), val.(string))
},
}},
`regexp`: {InputRegexp, Kinds{
reflect.String: func(rv reflect.Value, val interface{}) bool {
return val.(*regexp.Regexp).MatchString(rv.String())
},
}},
// Comparisons
`eq`: {InputSame, Kinds{
reflect.String: func(rv reflect.Value, val interface{}) bool {
return rv.String() == val.(string)
},
reflect.Int: func(rv reflect.Value, val interface{}) bool {
return rv.Int() == val.(int64)
},
reflect.Uint: func(rv reflect.Value, val interface{}) bool {
return rv.Uint() == val.(uint64)
},
reflect.Float64: func(rv reflect.Value, val interface{}) bool {
return rv.Float() == val.(float64)
},
}},
// Integers
`gt`: {InputSame, Kinds{
reflect.Int: func(rv reflect.Value, val interface{}) bool {
return rv.Int() > val.(int64)
},
reflect.Uint: func(rv reflect.Value, val interface{}) bool {
return rv.Uint() > val.(uint64)
},
reflect.Float64: func(rv reflect.Value, val interface{}) bool {
return rv.Float() > val.(float64)
},
}},
`lt`: {InputSame, Kinds{
reflect.Int: func(rv reflect.Value, val interface{}) bool {
return rv.Int() < val.(int64)
},
reflect.Uint: func(rv reflect.Value, val interface{}) bool {
return rv.Uint() < val.(uint64)
},
reflect.Float64: func(rv reflect.Value, val interface{}) bool {
return rv.Float() < val.(float64)
},
}},
// Slices, maps & strings
`len`: {InputInt, Kinds{
reflect.Slice: func(rv reflect.Value, val interface{}) bool {
return rv.Len() == val.(int)
},
reflect.Map: func(rv reflect.Value, val interface{}) bool {
return rv.Len() == val.(int)
},
reflect.String: func(rv reflect.Value, val interface{}) bool {
return rv.Len() == val.(int)
},
}},
`min`: {InputInt, Kinds{
reflect.Slice: func(rv reflect.Value, val interface{}) bool {
return rv.Len() >= val.(int)
},
reflect.Map: func(rv reflect.Value, val interface{}) bool {
return rv.Len() >= val.(int)
},
reflect.String: func(rv reflect.Value, val interface{}) bool {
return rv.Len() >= val.(int)
},
}},
`max`: {InputInt, Kinds{
reflect.Slice: func(rv reflect.Value, val interface{}) bool {
return rv.Len() <= val.(int)
},
reflect.Map: func(rv reflect.Value, val interface{}) bool {
return rv.Len() <= val.(int)
},
reflect.String: func(rv reflect.Value, val interface{}) bool {
return rv.Len() <= val.(int)
},
}},
}