Add --gpg' and --gpgflags` flags

`--gpg' is the GnuPG binary, while `--gpgflags' are extra
arguments to be passed to  GnuPG.

Also Update man page and usage regarding GnuPG options.

cmd.go

@@ -46,6 +46,7 @@ Permanent configuration options:
     --pacman   <file>    pacman command to use
     --tar      <file>    bsdtar command to use
     --git      <file>    git command to use
+    --gpg      <file>    gpg command to use
     --config   <file>    pacman.conf file to use
 
     --requestsplitn <n>  Max amount of packages to query per AUR request
@@ -63,9 +64,10 @@ Permanent configuration options:
     --noredownload       Skip pkgbuild download if in cache and up to date
     --rebuild            Always build target packages
     --rebuildall         Always build all AUR packages
-    --rebuildtree       Always build all AUR packages even if installed
+    --rebuildtree        Always build all AUR packages even if installed
     --norebuild          Skip package build if in cache and up to date
     --mflags <flags>     Pass arguments to makepkg
+    --gpgflags <flags>   Pass arguments to gpg
     --sudoloop           Loop sudo calls in the background to avoid timeout
     --nosudoloop         Do not loop sudo calls in the background
 
@@ -202,7 +204,6 @@ func initAlpm() (err error) {
 		alpmConf.IgnoreGroup = append(alpmConf.IgnoreGroup, strings.Split(value, ",")...)
 	}
 
-
 	//TODO
 	//current system does not allow duplicate arguments
 	//but pacman allows multiple cachdirs to be passed
@@ -411,6 +412,8 @@ func handleConfig(option, value string) bool {
 		config.ReBuild = "tree"
 	case "norebuild":
 		config.ReBuild = "no"
+	case "gpgflags":
+		config.GpgFlags = value
 	case "mflags":
 		config.MFlags = value
 	case "builddir":
@@ -425,6 +428,8 @@ func handleConfig(option, value string) bool {
 		config.TarBin = value
 	case "git":
 		config.GitBin = value
+	case "gpg":
+		config.GpgBin = value
 	case "requestsplitn":
 		n, err := strconv.Atoi(value)
 		if err == nil && n > 0 {

config.go

@@ -35,6 +35,7 @@ type Configuration struct {
 	ReBuild       string `json:"rebuild"`
 	GitBin        string `json:"gitbin"`
 	GpgBin        string `json:"gpgbin"`
+	GpgFlags      string `json:"gpgflags"`
 	MFlags        string `json:"mflags"`
 	RequestSplitN int    `json:"requestsplitn"`
 	SearchMode    int    `json:"-"`
@@ -127,6 +128,7 @@ func defaultSettings(config *Configuration) {
 	config.NoConfirm = false
 	config.PacmanBin = "pacman"
 	config.PacmanConf = "/etc/pacman.conf"
+	config.GpgFlags = ""
 	config.MFlags = ""
 	config.SortMode = BottomUp
 	config.SudoLoop = false

install.go

@@ -214,7 +214,7 @@ func install(parser *arguments) error {
 			return nil
 		}
 
-		err = checkPgpKeys(dc.Aur, dc.Bases, nil)
+		err = checkPgpKeys(dc.Aur, dc.Bases)
 		if err != nil {
 			return err
 		}

keys.go

@@ -41,14 +41,12 @@ func (set pgpKeySet) get(key string) bool {
 }
 
 // checkPgpKeys iterates through the keys listed in the PKGBUILDs and if needed,
-// asks the user whether yay should try to import them. gpgExtraArgs are extra
-// parameters to pass to gpg, in order to facilitate testing, such as using a
-// different keyring. It can be nil.
-func checkPgpKeys(pkgs []*rpc.Pkg, bases map[string][]*rpc.Pkg, gpgExtraArgs []string) error {
+// asks the user whether yay should try to import them.
+func checkPgpKeys(pkgs []*rpc.Pkg, bases map[string][]*rpc.Pkg) error {
 	// Let's check the keys individually, and then we can offer to import
 	// the problematic ones.
 	problematic := make(pgpKeySet)
-	args := append(gpgExtraArgs, "--list-keys")
+	args := append(strings.Fields(config.GpgFlags), "--list-keys")
 
 	// Mapping all the keys.
 	for _, pkg := range pkgs {
@@ -84,16 +82,15 @@ func checkPgpKeys(pkgs []*rpc.Pkg, bases map[string][]*rpc.Pkg, gpgExtraArgs []s
 		return err
 	}
 	if continueTask(question, "nN") {
-		return importKeys(gpgExtraArgs, problematic.toSlice())
+		return importKeys(problematic.toSlice())
 	}
 
 	return nil
 }
 
-// importKeys tries to import the list of keys specified in its argument. As
-// in checkGpgKeys, gpgExtraArgs are extra parameters to pass to gpg.
-func importKeys(gpgExtraArgs, keys []string) error {
-	args := append(gpgExtraArgs, "--recv-keys")
+// importKeys tries to import the list of keys specified in its argument.
+func importKeys(keys []string) error {
+	args := append(strings.Fields(config.GpgFlags), "--recv-keys")
 	cmd := exec.Command(config.GpgBin, append(args, keys...)...)
 	cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
 

keys_test.go

@@ -143,7 +143,7 @@ func TestImportKeys(t *testing.T) {
 	defer os.RemoveAll(keyringDir)
 
 	config.GpgBin = "gpg"
-	keyringArgs := []string{"--homedir", keyringDir}
+	config.GpgFlags = fmt.Sprintf("--homedir %s", keyringDir)
 
 	casetests := []struct {
 		keys      []string
@@ -183,7 +183,7 @@ func TestImportKeys(t *testing.T) {
 	}
 
 	for _, tt := range casetests {
-		err := importKeys(keyringArgs, tt.keys)
+		err := importKeys(tt.keys)
 		if !tt.wantError {
 			if err != nil {
 				t.Fatalf("Got error %q, want no error", err)
@@ -212,7 +212,7 @@ func TestCheckPgpKeys(t *testing.T) {
 
 	config.BuildDir = buildDir
 	config.GpgBin = "gpg"
-	keyringArgs := []string{"--homedir", keyringDir}
+	config.GpgFlags = fmt.Sprintf("--homedir %s", keyringDir)
 
 	// Creating the dummy package data used in the tests.
 	dummyData := map[string]string{
@@ -292,7 +292,7 @@ func TestCheckPgpKeys(t *testing.T) {
 	}
 
 	for _, tt := range casetests {
-		err := checkPgpKeys(tt.pkgs, tt.bases, keyringArgs)
+		err := checkPgpKeys(tt.pkgs, tt.bases)
 		if !tt.wantError {
 			if err != nil {
 				t.Fatalf("Got error %q, want no error", err)

parser.go

@@ -427,6 +427,8 @@ func hasParam(arg string) bool {
 	//yay params
 	case "mflags":
 		return true
+	case "gpgflags":
+		return true
 	case "builddir":
 		return true
 	case "editor":
@@ -439,6 +441,8 @@ func hasParam(arg string) bool {
 		return true
 	case "git":
 		return true
+	case "gpg":
+		return true
 	case "requestsplitn":
 		return true
 	default:

yay.8

@@ -152,6 +152,12 @@ The command to use for \fBgit\fR calls. This can be a command in
 \fBPATH\fR or an absolute path to the file\&.
 .RE
 .PP
+\fB\-\-gpg <file>\fR
+.RS 4
+The command to use for \fBgpg\fR calls. This can be a command in
+\fBPATH\fR or an absolute path to the file\&.
+.RE
+.PP
 \fB\-\-config <file>\fR
 .RS 4
 The pacman config file to use\&.
@@ -257,6 +263,14 @@ passed to makepkg. Multiple arguments may be passed by supplying a space
 separated list that is quoted by the shell.
 .RE
 .PP
+\fB\-\-gpgflags <flags>\fR
+.RS 4
+Passes arguments to gpg\&. These flags get passed to every instance where
+gpg is called by Yay. Arguments are split on whitespace before being
+passed to gpg. Multiple arguments may be passed by supplying a space
+separated list that is quoted by the shell.
+.RE
+.PP
 \fB\-\-sudoloop\fR
 .RS 4
 Loop sudo calls in the background to prevent sudo from timing out during long