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common.go
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common.go
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package common
import (
"encoding/json"
"flag"
"fmt"
"strconv"
"time"
)
func CurrentDate() string {
return time.Now().Format("2006-01-02")
}
func GetArgVal(name string) interface{} {
if flag.Lookup(name) != nil {
return flag.Lookup(name).Value.(flag.Getter).Get()
}
return nil
}
func IsArgStringDefined(name string) bool {
if len(GetArgVal(name).(string)) == 0 {
return false
}
return true
}
func InterfaceToString(value interface{}) string {
if value != nil {
return fmt.Sprintf("%v", value)
}
return ""
}
func TrimNewlines(text string) string {
t := []rune(text)
l := len(t)
r := []rune("")
Next := func() int {
for y := 0; y < l; y++ {
if t[y] != '\n' {
return y
}
}
return 0
}
Previous := func() int {
for y := l - 1; y >= 0; y-- {
if t[y] != '\n' {
return y
}
}
return 0
}
for x := 0; x < l; x++ {
if Next() > x || Previous() < x {
continue
}
r = append(r, t[x])
}
return string(r)
}
func StringToDate(date string) time.Time {
layout := "2006-01-02"
t, _ := time.Parse(layout, date)
return t
}
func StringToInt(value string) int {
if i, err := strconv.Atoi(value); err == nil {
return i
}
return 0
}
func GetArgValJSON(arg string, key string) (val string, err error) {
attrs, err := GetArgValsJSON(arg)
if err != nil {
return "", err
}
return InterfaceToString(attrs[key]), nil
}
func GetArgValsJSON(name string) (attr map[string]interface{}, err error) {
return StringToJSON(GetArgVal(name).(string))
}
func StringToJSON(text string) (attr map[string]interface{}, err error) {
if err = json.Unmarshal([]byte(text), &attr); err != nil {
return map[string]interface{}{}, err
}
return attr, nil
}