helm(search): add search command

cmd/helm/search.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/deis/tiller/pkg/repo"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	RootCommand.AddCommand(searchCmd)
+}
+
+var searchCmd = &cobra.Command{
+	Use:   "search [CHART]",
+	Short: "Search for charts",
+	Long:  "",
+	RunE:  Search,
+}
+
+func Search(cmd *cobra.Command, args []string) error {
+	if len(args) == 0 {
+		return errors.New("This command needs at least one argument")
+	}
+
+	results, err := searchCacheForPattern(args[0])
+	if err != nil {
+		return err
+	}
+	cmd.Println("Charts:")
+	for _, result := range results {
+		fmt.Println(result)
+	}
+	return nil
+}
+
+func searchCacheForPattern(name string) ([]string, error) {
+	dir := CacheDirectory(os.ExpandEnv(helmHome))
+	fileList := []string{}
+	filepath.Walk(dir, func(path string, f os.FileInfo, err error) error {
+		if !f.IsDir() {
+			fileList = append(fileList, path)
+		}
+		return nil
+	})
+	matches := []string{}
+	for _, f := range fileList {
+		cache, _ := repo.LoadCacheFile(f)
+		repoName := filepath.Base(strings.TrimRight(f, "-cache.txt"))
+		for k, _ := range cache.Entries {
+			if strings.Contains(k, name) {
+				matches = append(matches, repoName+"/"+k)
+			}
+		}
+	}
+	return matches, nil
+}

pkg/repo/local.go

@@ -62,15 +62,12 @@ func AddChartToLocalRepo(ch *chart.Chart, path string) error {
 	return nil
 }
 
-func ReindexCacheFile(ch *chart.Chart, path string) error {
-	name := ch.Chartfile().Name + "-" + ch.Chartfile().Version
-	fmt.Println("\nname: " + name)
+func LoadCacheFile(path string) (*CacheFile, error) {
 	b, err := ioutil.ReadFile(path)
-
 	if err != nil {
 		fmt.Println("read file err")
 		fmt.Printf("err, %s", err)
-		return err
+		return nil, err
 	}
 
 	var y CacheFile
@@ -78,13 +75,16 @@ func ReindexCacheFile(ch *chart.Chart, path string) error {
 	if err != nil {
 		fmt.Println("error unmarshaling")
 		fmt.Println("err, %s", err)
-		return err
+		return nil, err
 	}
-	fmt.Println("%v\n", y)
+	return &y, nil
+}
+
+func ReindexCacheFile(ch *chart.Chart, path string) error {
+	name := ch.Chartfile().Name + "-" + ch.Chartfile().Version
+	y, _ := LoadCacheFile(path) //TODO: handle err later
 	found := false
-	for k, v := range y.Entries {
-		fmt.Printf("in here: %v", v)
-		fmt.Printf("in here: %v", k)
+	for k, _ := range y.Entries {
 		if k == name {
 			found = true
 			break