allow multiple templates

Author: dirtycajunrice

cmd/helm-docs/command_line.go

@@ -48,7 +48,10 @@ func newHelmDocsCommand(run func(cmd *cobra.Command, args []string)) (*cobra.Com
 	command.PersistentFlags().StringP("log-level", "l", "info", logLevelUsage)
 	command.PersistentFlags().StringP("output-file", "o", "README.md", "markdown file path relative to each chart directory to which rendered documentation will be written")
 	command.PersistentFlags().StringP("template-file", "t", "README.md.gotmpl", "gotemplate file path relative to each chart directory from which documentation will be generated")
-
+	command.PersistentFlags().StringSliceP("template-files", "T", []string{"README.md.gotmpl"}, "gotemplate file paths relative to each chart directory from which documentation will be generated")
+	if err := command.PersistentFlags().MarkDeprecated("template-file", "in favor of template-files"); err != nil {
+		return command, err
+	}
 	viper.AutomaticEnv()
 	viper.SetEnvPrefix("HELM_DOCS")
 	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))

cmd/helm-docs/main.go

@@ -5,11 +5,12 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/norwoodj/helm-docs/pkg/document"
-	"github.com/norwoodj/helm-docs/pkg/helm"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
+
+	"github.com/norwoodj/helm-docs/pkg/document"
+	"github.com/norwoodj/helm-docs/pkg/helm"
 )
 
 func retrieveInfoAndPrintDocumentation(chartDirectory string, waitGroup *sync.WaitGroup, dryRun bool) {
@@ -25,15 +26,20 @@ func retrieveInfoAndPrintDocumentation(chartDirectory string, waitGroup *sync.Wa
 
 }
 
-func helmDocs(_ *cobra.Command, _ []string) {
+func helmDocs(cmd *cobra.Command, _ []string) {
 	initializeCli()
 	chartDirs, err := helm.FindChartDirectories()
-
 	if err != nil {
 		log.Errorf("Error finding chart directories: %s", err)
 		os.Exit(1)
 	}
-
+	if cmd.PersistentFlags().Changed("template-file") && cmd.PersistentFlags().Changed("template-files") {
+		log.Errorf("you cannot use both template-file and template-files. consider using just template-files")
+	} else if cmd.PersistentFlags().Changed("template-files") {
+		viper.Set("template-type", "template-files")
+	} else {
+		viper.Set("template-type", "template-file")
+	}
 	log.Infof("Found Chart directories [%s]", strings.Join(chartDirs, ", "))
 	dryRun := viper.GetBool("dry-run")
 	waitGroup := sync.WaitGroup{}

pkg/document/template.go

@@ -8,9 +8,10 @@ import (
 	"text/template"
 
 	"github.com/Masterminds/sprig"
-	"github.com/norwoodj/helm-docs/pkg/helm"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
+
+	"github.com/norwoodj/helm-docs/pkg/helm"
 )
 
 const defaultDocumentationTemplate = `{{ template "chart.header" . }}
@@ -218,21 +219,32 @@ func getValuesTableTemplates() string {
 }
 
 func getDocumentationTemplate(chartDirectory string) (string, error) {
-	templateFile := viper.GetString("template-file")
-	templateFileForChart := path.Join(chartDirectory, templateFile)
-
-	if _, err := os.Stat(templateFileForChart); os.IsNotExist(err) {
-		log.Debugf("Did not find template file %s for chart %s, using default template", templateFile, chartDirectory)
-		return defaultDocumentationTemplate, nil
+	templateFiles := make([]string, 0)
+	templateType := viper.GetString("template-type")
+	if templateType == "template-file" {
+		templateFiles = append(templateFiles, viper.GetString("template-file"))
+	} else {
+		templateFiles = append(templateFiles, viper.GetStringSlice("template-files")...)
 	}
-
-	log.Debugf("Using template file %s for chart %s", templateFile, chartDirectory)
-	templateContents, err := ioutil.ReadFile(templateFileForChart)
-	if err != nil {
-		return "", err
+	templateFilesForChart := make([]string, 0)
+	for _, templateFile := range templateFiles {
+		templateFileForChart := path.Join(chartDirectory, templateFile)
+		if _, err := os.Stat(templateFileForChart); os.IsNotExist(err) {
+			log.Debugf("Did not find template file %s for chart %s, using default template", templateFile, chartDirectory)
+			return defaultDocumentationTemplate, nil
+		}
+		templateFilesForChart = append(templateFilesForChart, templateFileForChart)
 	}
-
-	return string(templateContents), nil
+	log.Debugf("Using template files %s for chart %s", templateFiles, chartDirectory)
+	allTemplateContents := make([]byte, 0)
+	for _, templateFileForChart := range templateFilesForChart {
+		templateContents, err := ioutil.ReadFile(templateFileForChart)
+		if err != nil {
+			return "", err
+		}
+		allTemplateContents = append(allTemplateContents, templateContents...)
+	}
+	return string(allTemplateContents), nil
 }
 
 func getDocumentationTemplates(chartDirectory string) ([]string, error) {