137 lines
3 KiB
Go
137 lines
3 KiB
Go
package api
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import (
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"math"
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"strconv"
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"strings"
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"text/template"
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"time"
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"github.com/cli/cli/utils"
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"github.com/mgutz/ansi"
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)
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func parseTemplate(tpl string, colorEnabled bool) (*template.Template, error) {
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now := time.Now()
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templateFuncs := map[string]interface{}{
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"color": templateColor,
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"autocolor": templateColor,
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"timefmt": func(format, input string) (string, error) {
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t, err := time.Parse(time.RFC3339, input)
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if err != nil {
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return "", err
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}
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return t.Format(format), nil
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},
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"timeago": func(input string) (string, error) {
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t, err := time.Parse(time.RFC3339, input)
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if err != nil {
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return "", err
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}
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return timeAgo(now.Sub(t)), nil
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},
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"pluck": templatePluck,
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"join": templateJoin,
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}
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if !colorEnabled {
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templateFuncs["autocolor"] = func(colorName string, input interface{}) (string, error) {
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return jsonScalarToString(input)
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}
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}
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return template.New("").Funcs(templateFuncs).Parse(tpl)
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}
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func executeTemplate(w io.Writer, input io.Reader, templateStr string, colorEnabled bool) error {
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t, err := parseTemplate(templateStr, colorEnabled)
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if err != nil {
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return err
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}
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jsonData, err := ioutil.ReadAll(input)
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if err != nil {
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return err
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}
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var data interface{}
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if err := json.Unmarshal(jsonData, &data); err != nil {
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return err
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}
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return t.Execute(w, data)
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}
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func jsonScalarToString(input interface{}) (string, error) {
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switch tt := input.(type) {
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case string:
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return tt, nil
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case float64:
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if math.Trunc(tt) == tt {
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return strconv.FormatFloat(tt, 'f', 0, 64), nil
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} else {
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return strconv.FormatFloat(tt, 'f', 2, 64), nil
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}
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case nil:
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return "", nil
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case bool:
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return fmt.Sprintf("%v", tt), nil
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default:
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return "", fmt.Errorf("cannot convert type to string: %v", tt)
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}
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}
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func templateColor(colorName string, input interface{}) (string, error) {
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text, err := jsonScalarToString(input)
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if err != nil {
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return "", err
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}
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return ansi.Color(text, colorName), nil
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}
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func templatePluck(field string, input []interface{}) []interface{} {
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var results []interface{}
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for _, item := range input {
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obj := item.(map[string]interface{})
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results = append(results, obj[field])
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}
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return results
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}
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func templateJoin(sep string, input []interface{}) (string, error) {
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var results []string
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for _, item := range input {
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text, err := jsonScalarToString(item)
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if err != nil {
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return "", err
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}
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results = append(results, text)
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}
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return strings.Join(results, sep), nil
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}
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func timeAgo(ago time.Duration) string {
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if ago < time.Minute {
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return "just now"
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}
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if ago < time.Hour {
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return utils.Pluralize(int(ago.Minutes()), "minute") + " ago"
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}
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if ago < 24*time.Hour {
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return utils.Pluralize(int(ago.Hours()), "hour") + " ago"
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}
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if ago < 30*24*time.Hour {
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return utils.Pluralize(int(ago.Hours())/24, "day") + " ago"
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}
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if ago < 365*24*time.Hour {
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return utils.Pluralize(int(ago.Hours())/24/30, "month") + " ago"
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}
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return utils.Pluralize(int(ago.Hours()/24/365), "year") + " ago"
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}
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