Rework completion

Bash seperates on whitespace, so the fish completion file
actually works for bash and zsh. So remove the concept of shells
entirley and just use the singular aur_sh.cache file.

If for some reason output without the repository data is needed, the
user could always just pipe it into awk like so
`yay -Pc | awk '{print $1}'`. Or perhaps a --quiet option could be added
where yay will strip the output itself.

The completion cache now updates when installing AUR packages. This is
done as a goroutine with no wait groups. This ensures the program will
never hang if there is a problem.

The completion is stil updated during -Pc but as long as an AUR package
has been installed recently it should not need to update.

The cache will now also wait 7 days instead of 2 before refreshing.
A refresh can be forced using -Pcc.

cmd.go

@@ -361,13 +361,10 @@ func handlePrint() (err error) {
 		err = printUpdateList(cmdArgs)
 	case cmdArgs.existsArg("w", "news"):
 		err = printNewsFeed()
+	case cmdArgs.existsDouble("c", "complete"):
+		complete(true)
 	case cmdArgs.existsArg("c", "complete"):
-		switch {
-		case cmdArgs.existsArg("f", "fish"):
-			complete("fish")
-		default:
-			complete("sh")
-		}
+		complete(false)
 	case cmdArgs.existsArg("s", "stats"):
 		err = localStatistics()
 	default:

completions.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bufio"
-	"fmt"
 	"io"
 	"net/http"
 	"os"
@@ -13,7 +12,7 @@ import (
 )
 
 //CreateAURList creates a new completion file
-func createAURList(out *os.File, shell string) (err error) {
+func createAURList(out *os.File) (err error) {
 	resp, err := http.Get("https://aur.archlinux.org/packages.gz")
 	if err != nil {
 		return err
@@ -24,22 +23,15 @@ func createAURList(out *os.File, shell string) (err error) {
 
 	scanner.Scan()
 	for scanner.Scan() {
-		fmt.Print(scanner.Text())
 		out.WriteString(scanner.Text())
-		if shell == "fish" {
-			fmt.Print("\tAUR\n")
-			out.WriteString("\tAUR\n")
-		} else {
-			fmt.Print("\n")
-			out.WriteString("\n")
-		}
+		out.WriteString("\tAUR\n")
 	}
 
 	return nil
 }
 
 //CreatePackageList appends Repo packages to completion cache
-func createRepoList(out *os.File, shell string) (err error) {
+func createRepoList(out *os.File) (err error) {
 	dbList, err := alpmHandle.SyncDbs()
 	if err != nil {
 		return
@@ -47,15 +39,8 @@ func createRepoList(out *os.File, shell string) (err error) {
 
 	_ = dbList.ForEach(func(db alpm.Db) error {
 		_ = db.PkgCache().ForEach(func(pkg alpm.Package) error {
-			fmt.Print(pkg.Name())
 			out.WriteString(pkg.Name())
-			if shell == "fish" {
-				fmt.Print("\t" + pkg.DB().Name() + "\n")
-				out.WriteString("\t" + pkg.DB().Name() + "\n")
-			} else {
-				fmt.Print("\n")
-				out.WriteString("\n")
-			}
+			out.WriteString("\t" + pkg.DB().Name() + "\n")
 			return nil
 		})
 		return nil
@@ -63,33 +48,38 @@ func createRepoList(out *os.File, shell string) (err error) {
 	return nil
 }
 
-// Complete provides completion info for shells
-func complete(shell string) error {
-	var path string
-
-	if shell == "fish" {
-		path = filepath.Join(cacheHome, "aur_fish"+".cache")
-	} else {
-		path = filepath.Join(cacheHome, "aur_sh"+".cache")
-	}
+func updateCompletion(force bool) error {
+	path := filepath.Join(cacheHome, "completion.cache")
 	info, err := os.Stat(path)
 
-	if os.IsNotExist(err) || time.Since(info.ModTime()).Hours() > 48 {
+	if os.IsNotExist(err) || time.Since(info.ModTime()).Hours() >= 7*24 || force {
 		os.MkdirAll(filepath.Dir(path), 0755)
 		out, errf := os.Create(path)
 		if errf != nil {
 			return errf
 		}
 
-		if createAURList(out, shell) != nil {
+		if createAURList(out) != nil {
 			defer os.Remove(path)
 		}
-		erra := createRepoList(out, shell)
+		erra := createRepoList(out)
 
 		out.Close()
 		return erra
 	}
 
+	return nil
+}
+
+// Complete provides completion info for shells
+func complete(force bool) error {
+	path := filepath.Join(cacheHome, "completion.cache")
+
+	err := updateCompletion(force)
+	if err != nil {
+		return err
+	}
+
 	in, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0644)
 	if err != nil {
 		return err

install.go

@@ -312,6 +312,8 @@ func install(parser *arguments) error {
 		}
 	}
 
+	go updateCompletion(false)
+
 	err = downloadPkgBuildsSources(do.Aur, do.Bases, incompatible)
 	if err != nil {
 		return err