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val.go
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val.go
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package val
import (
"errors"
"fmt"
"strings"
)
type Validator struct {
fVals []fieldValidator
}
type fieldValidator struct {
k string
v interface{}
f ValFunc
}
func New() *Validator {
return &Validator{fVals: []fieldValidator{}}
}
func (this *Validator) Add(k string, v interface{}, funcs ...ValFunc) {
for _, f := range funcs {
fVal := fieldValidator{k: k, v: v, f: f}
this.fVals = append(this.fVals, fVal)
}
}
func (this *Validator) Validate() (bool, map[string]error) {
errs := map[string]error{}
for _, fVal := range this.fVals {
if err := fVal.f(fVal.k, fVal.v); nil != err {
errs[fVal.k] = err
}
}
valid := len(errs) == 0
return valid, errs
}
func ErrorFromMap(errMap map[string]error) error {
errs := []string{}
for key, err := range errMap {
nErr := fmt.Sprintf("%s - %s", key, err)
errs = append(errs, nErr)
}
return errors.New(strings.Join(errs, ","))
}