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use table output for better user experience (#130)
* add support for output style * update go.mod
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package util | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/olekukonko/tablewriter" | ||
| ) | ||
|
|
||
| // output style | ||
| const ( | ||
| OutputStylePlain = "plain" | ||
| OutputStyleTable = "table" | ||
| OutputStyleJson = "json" | ||
| ) | ||
|
|
||
| func RenderString(format string, headers []string, values [][]string) { | ||
| if len(values) == 0 { | ||
| return | ||
| } | ||
| if len(headers) == 0 { | ||
| for _, value := range values { | ||
| args := make([]interface{}, len(value)) | ||
| for i, v := range value { | ||
| args[i] = v | ||
| } | ||
| fmt.Printf(format, args...) | ||
| } | ||
| return | ||
| } | ||
|
|
||
| buf := new(bytes.Buffer) | ||
| for _, value := range values { | ||
| args := make([]string, len(headers)-2) | ||
| for i, header := range headers[2:] { | ||
| args[i] = header + ": " + value[i+2] | ||
| } | ||
| buf.WriteString(fmt.Sprintf(format, value[0], value[1], strings.Join(args, ", "))) | ||
| } | ||
| fmt.Print(buf.String()) | ||
| } | ||
|
|
||
| func RenderTable(headers []string, values [][]string) { | ||
| if len(values) == 0 { | ||
| return | ||
| } | ||
| tb := tablewriter.NewWriter(os.Stdout) | ||
| tb.SetHeader(headers) | ||
| tb.AppendBulk(values) | ||
| tb.Render() | ||
| } | ||
|
|
||
| func RenderJson(headers []string, values [][]string) { | ||
| if len(values) == 0 { | ||
| return | ||
| } | ||
| data := make([]map[string]string, 0, len(values)) | ||
| for _, value := range values { | ||
| line := make(map[string]string, 0) | ||
| for i, header := range headers { | ||
| line[header] = value[i] | ||
| } | ||
| data = append(data, line) | ||
| } | ||
| outStr, err := json.Marshal(data) | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| return | ||
| } | ||
| fmt.Println(string(outStr)) | ||
| } | ||
|
|
||
| func IntToString(i int64) string { | ||
| return fmt.Sprintf("%d", i) | ||
| } | ||
|
|
||
| func FloatToOneString(f float64) string { | ||
| return fmt.Sprintf("%.1f", f) | ||
| } | ||
|
|
||
| func FloatToTwoString(f float64) string { | ||
| return fmt.Sprintf("%.2f", f) | ||
| } |
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