101 lines
2.1 KiB
Go
101 lines
2.1 KiB
Go
package extrafiles
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import (
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"bytes"
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_ "embed"
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"fmt"
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"log"
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"sort"
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"strings"
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"text/template"
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"gopkg.in/yaml.v3"
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)
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//go:embed readme.tpl
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var readmeTemplate string
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type chart struct {
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Name string
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Description string
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Values []string
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}
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func parseValues(prefix string, values map[string]any, result map[string]string) {
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for key, value := range values {
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path := key
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if prefix != "" {
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path = prefix + "." + key
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}
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switch v := value.(type) {
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case []any:
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for i, u := range v {
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parseValues(fmt.Sprintf("%s[%d]", path, i), map[string]any{"value": u}, result)
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}
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case map[string]any:
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parseValues(path, v, result)
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default:
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strValue := fmt.Sprintf("`%v`", value)
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result["`"+path+"`"] = strValue
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}
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}
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}
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// ReadMeFile returns the content of the README.md file.
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func ReadMeFile(charname, description string, values map[string]any) string {
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// values is a yaml structure with keys and structured values...
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// we want to make list of dot separated keys and their values
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vv := map[string]any{}
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out, _ := yaml.Marshal(values)
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if err := yaml.Unmarshal(out, &vv); err != nil {
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log.Printf("Error parsing values: %s", err)
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}
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result := make(map[string]string)
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parseValues("", vv, result)
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funcMap := template.FuncMap{
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"repeat": func(s string, count int) string {
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return strings.Repeat(s, count)
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},
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}
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tpl, err := template.New("readme").Funcs(funcMap).Parse(readmeTemplate)
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if err != nil {
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panic(err)
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}
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valuesLines := []string{}
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maxParamLen := 0
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maxDefaultLen := 0
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for key, value := range result {
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if len(key) > maxParamLen {
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maxParamLen = len(key)
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}
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if len(value) > maxDefaultLen {
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maxDefaultLen = len(value)
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}
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}
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for key, value := range result {
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valuesLines = append(valuesLines, fmt.Sprintf("| %-*s | %-*s |", maxParamLen, key, maxDefaultLen, value))
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}
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sort.Strings(valuesLines)
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buf := &bytes.Buffer{}
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err = tpl.Execute(buf, map[string]any{
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"DescrptionPadding": maxParamLen,
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"DefaultPadding": maxDefaultLen,
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"Chart": chart{
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Name: charname,
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Description: description,
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Values: valuesLines,
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},
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})
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if err != nil {
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panic(err)
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}
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return buf.String()
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}
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