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params.go
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params.go
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package reg
import (
"fmt"
"strconv"
"time"
)
func ParameterError(name string, err error) error {
return fmt.Errorf("Failed to parse '%v' parameter: %v", name, err)
}
func StrParam(params map[string]string, name string, defaultVal string, hasDefault bool, err *error) string {
if *err != nil {
return ""
}
strVal, ok := params[name]
if ok {
return strVal
} else if hasDefault {
return defaultVal
} else {
*err = ParameterError(name, fmt.Errorf("Missing required parmeter"))
return ""
}
}
func DurationParam(params map[string]string, name string, defaultVal time.Duration, hasDefault bool, err *error) time.Duration {
if *err != nil {
return 0
}
strVal, ok := params[name]
if ok {
parsed, parseErr := time.ParseDuration(strVal)
if parseErr != nil {
*err = ParameterError(name, parseErr)
return 0
}
return parsed
} else if hasDefault {
return defaultVal
} else {
*err = ParameterError(name, fmt.Errorf("Missing required parmeter"))
return 0
}
}
func IntParam(params map[string]string, name string, defaultVal int, hasDefault bool, err *error) int {
if *err != nil {
return 0
}
strVal, ok := params[name]
if ok {
parsed, parseErr := strconv.Atoi(strVal)
if parseErr != nil {
*err = ParameterError(name, parseErr)
return 0
}
return parsed
} else if hasDefault {
return defaultVal
} else {
*err = ParameterError(name, fmt.Errorf("Missing required parmeter"))
return 0
}
}
func FloatParam(params map[string]string, name string, defaultVal float64, hasDefault bool, err *error) float64 {
if *err != nil {
return 0
}
strVal, ok := params[name]
if ok {
parsed, parseErr := strconv.ParseFloat(strVal, 64)
if parseErr != nil {
*err = ParameterError(name, parseErr)
}
return parsed
} else if hasDefault {
return defaultVal
} else {
*err = ParameterError(name, fmt.Errorf("Missing required parmeter"))
return 0
}
}
func BoolParam(params map[string]string, name string, defaultVal bool, hasDefault bool, err *error) bool {
if *err != nil {
return false
}
strVal, ok := params[name]
if ok {
parsed, parseErr := strconv.ParseBool(strVal)
if parseErr != nil {
*err = ParameterError(name, parseErr)
return false
}
return parsed
} else if hasDefault {
return defaultVal
} else {
*err = ParameterError(name, fmt.Errorf("Missing required parmeter"))
return false
}
}