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package cliutil
import (
"fmt"
"os"
"strconv"
"github.com/shenwei356/util/stringutil"
"github.com/spf13/cobra"
)
func isStdin(file string) bool {
return file == "-"
}
func CheckError(err error) {
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(-1)
}
}
func GetFlagInt(cmd *cobra.Command, flag string) int {
value, err := cmd.Flags().GetInt(flag)
CheckError(err)
return value
}
func GetFlagUint8(cmd *cobra.Command, flag string) uint8 {
value, err := cmd.Flags().GetUint8(flag)
CheckError(err)
return value
}
func GetFlagUint32(cmd *cobra.Command, flag string) uint32 {
value, err := cmd.Flags().GetUint32(flag)
CheckError(err)
return value
}
func GetFlagUint64(cmd *cobra.Command, flag string) uint64 {
value, err := cmd.Flags().GetUint64(flag)
CheckError(err)
return value
}
func GetFlagPositiveInt(cmd *cobra.Command, flag string) int {
value, err := cmd.Flags().GetInt(flag)
CheckError(err)
if value <= 0 {
CheckError(fmt.Errorf("value of flag --%s should be greater than 0", flag))
}
return value
}
func GetFlagPositiveFloat64(cmd *cobra.Command, flag string) float64 {
value, err := cmd.Flags().GetFloat64(flag)
CheckError(err)
if value <= 0 {
CheckError(fmt.Errorf("value of flag --%s should be greater than 0", flag))
}
return value
}
func GetFlagNonNegativeInt(cmd *cobra.Command, flag string) int {
value, err := cmd.Flags().GetInt(flag)
CheckError(err)
if value < 0 {
CheckError(fmt.Errorf("value of flag --%s should be greater than or equal to 0", flag))
}
return value
}
func GetFlagNonNegativeFloat64(cmd *cobra.Command, flag string) float64 {
value, err := cmd.Flags().GetFloat64(flag)
CheckError(err)
if value < 0 {
CheckError(fmt.Errorf("value of flag --%s should be greater than or equal to ", flag))
}
return value
}
func GetFlagBool(cmd *cobra.Command, flag string) bool {
value, err := cmd.Flags().GetBool(flag)
CheckError(err)
return value
}
func GetFlagString(cmd *cobra.Command, flag string) string {
value, err := cmd.Flags().GetString(flag)
CheckError(err)
return value
}
func GetFlagNonEmptyString(cmd *cobra.Command, flag string) string {
value, err := cmd.Flags().GetString(flag)
CheckError(err)
if value == "" {
CheckError(fmt.Errorf("value of flag --%s should not be empty", flag))
}
return value
}
func GetFlagCommaSeparatedStrings(cmd *cobra.Command, flag string) []string {
value, err := cmd.Flags().GetString(flag)
CheckError(err)
return stringutil.Split(value, ",")
}
func GetFlagSemicolonSeparatedStrings(cmd *cobra.Command, flag string) []string {
value, err := cmd.Flags().GetString(flag)
CheckError(err)
return stringutil.Split(value, ";")
}
func GetFlagCommaSeparatedInts(cmd *cobra.Command, flag string) []int {
filedsStrList := GetFlagCommaSeparatedStrings(cmd, flag)
fields := make([]int, len(filedsStrList))
for i, value := range filedsStrList {
v, err := strconv.Atoi(value)
if err != nil {
CheckError(fmt.Errorf("value of flag --%s should be comma separated integers", flag))
}
fields[i] = v
}
return fields
}
func GetFlagRune(cmd *cobra.Command, flag string) rune {
value, err := cmd.Flags().GetString(flag)
CheckError(err)
if len(value) > 1 {
CheckError(fmt.Errorf("value of flag --%s should has length of 1", flag))
}
var v rune
for _, r := range value {
v = r
break
}
return v
}
func GetFlagFloat64(cmd *cobra.Command, flag string) float64 {
value, err := cmd.Flags().GetFloat64(flag)
CheckError(err)
return value
}
func GetFlagInt64(cmd *cobra.Command, flag string) int64 {
value, err := cmd.Flags().GetInt64(flag)
CheckError(err)
return value
}
func GetFlagStringSlice(cmd *cobra.Command, flag string) []string {
value, err := cmd.Flags().GetStringSlice(flag)
CheckError(err)
return value
}
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