Remove unnecessary commands

help.go

@@ -44,30 +44,29 @@ Commands:
   vers                           List available versions
   ls                             List installed versions
   install <version> <opt...>     Install and use a <version> of lua
-  install-lj <version> <opt...>  Install and use a <version> of luajit
-  install-rocks <version>        Install and use a <version> of lurocks in
-                                  current lua environment
   use <version>                  Use a <version> of lua
-  use-lj <version>               Use a <version> of luajit
-  use-rocks <version>            Use a <version> of luajit
+  uninstall <version>            Uninstall a <version> of lua
 
   Note:
     The <version> specifier of the above commands can be specified as follows;
 
-    lenv install latest ; that picks the latest version
-    lenv install 5      ; that picks the latest minor version and patch version
-    lenv install 5.4    ; that picks the latest patch version
-
-    In addition, the install and install-lj commands can be used to install
-    luarocks at the same time with the following <version> specifier;
+    lenv install latest  ; that picks the latest version
+    lenv install 5       ; that picks the latest minor version and patch version
+    lenv install 5.4     ; that picks the latest patch version
+    lenv install lj-v2.1 ; that picks the version of luajit
 
     lenv install latest:latest ; that picks the the latest version of lua and
-                               ; luarocks
+                               ; luarocks in current lua environment
     lenv install :latest       ; that picks the the latest version of luarocks
+                                 in current lua environment
 
-  uninstall <version>            Uninstall a <version> of lua
-  uninstall-lj <version>         Uninstall a <version> of luajit
-  uninstall-rocks <version>      Uninstall a <version> of luarocks
+    If the version of luarocks is specified along with the version of lua, the
+    operation will target the specified version of the lua environment.
+    Otherwise, the operation will target the current lua environment.
+
+    In the case of the 'uninstall' command, the version specifier must match the
+    target version exactly. Also, if the version of luarocks is specified along
+    with the version of lua, the version specifier of luarocks is ignored.
 `)
 	osExit(rc)
 }

install.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 )
 
@@ -239,6 +240,20 @@ func installRocks(instdir string, cfg *TargetConfig) error {
 }
 
 func installLuaJit(instdir string, opts []string) error {
+	if runtime.GOOS == "darwin" {
+		// append MACOSX_DEPLOYMENT_TARGET=10.8 by default on macOS platform
+		found := false
+		for _, opt := range opts {
+			found = strings.HasPrefix(opt, "MACOSX_DEPLOYMENT_TARGET")
+			if found {
+				break
+			}
+		}
+		if !found {
+			opts = append(opts, "MACOSX_DEPLOYMENT_TARGET=10.8")
+		}
+	}
+
 	// clean up working directory
 	if err := DoExec("make", append([]string{"clean"}, opts...)...); err != nil {
 		return err
@@ -422,37 +437,14 @@ func doInstall(cfg *TargetConfig, item *VerItem, opts []string) {
 	UseInstalledVersion(cfg, item.Ver)
 }
 
-func CmdInstall(cfg *TargetConfig, opts []string) {
-	// check target version
-	if len(opts) == 0 || (cfg != LuaRocksCfg && opts[0] == ":") {
-		CmdHelp(1, "no version specified")
-	}
-	ver := opts[0]
-
-	// check :<luarocks-version>
-	var rocksVer string
-	if cfg != LuaRocksCfg {
-		if delim := strings.Index(ver, ":"); delim != -1 {
-			rocksVer = ver[delim+1:]
-			ver = ver[:delim]
-		}
-	}
-
-	var verItem *VerItem
-	if len(ver) > 0 {
-		verItem = PickTargetVersionItem(cfg, ver)
-	}
-	var rocksItem *VerItem
-	if len(rocksVer) > 0 {
-		rocksItem = PickTargetVersionItem(LuaRocksCfg, rocksVer)
-	}
-
-	if verItem != nil {
-		doInstall(cfg, verItem, opts[1:])
+func CmdInstall(opts []string) {
+	target := PickTargetVersion(opts[0], false)
+	if target.Lua != nil {
+		doInstall(target.Lua.Config, target.Lua.Version, opts[1:])
 	}
-	if rocksItem != nil {
+	if target.LuaRocks != nil {
 		ResolveCurrentDir()
 		CheckLuaRocksRootDir()
-		doInstall(LuaRocksCfg, rocksItem, opts)
+		doInstall(target.LuaRocks.Config, target.LuaRocks.Version, opts[1:])
 	}
 }

main.go

@@ -259,10 +259,60 @@ ERROR: the required directory does not exists.
 
 func CheckLuaRocksRootDir() {
 	if LuaRocksCfg.RootDir == "" {
-		fatalf("%q does not exist.\nplease run `lenv use <ver>` or `lenv use-lj <ver>` before installing or uninstalling luarocks", CurrentDir)
+		fatalf("%q does not exist.\nplease run `lenv use <ver>` before installing or uninstalling luarocks", CurrentDir)
 	}
 }
 
+type Target struct {
+	Config  *TargetConfig
+	Version *VerItem
+}
+
+type TargetVersion struct {
+	Lua      *Target
+	LuaRocks *Target
+}
+
+func PickTargetVersion(vers string, exactMatch bool) *TargetVersion {
+	// check target version
+	if len(vers) == 0 || vers == ":" {
+		CmdHelp(1, "no version specified")
+	}
+
+	// check :<luarocks-version>
+	var rocksVer string
+	if delim := strings.Index(vers, ":"); delim != -1 {
+		rocksVer = vers[delim+1:]
+		vers = vers[:delim]
+	}
+
+	target := &TargetVersion{}
+	if len(vers) > 0 {
+		if strings.HasPrefix(vers, "lj-") {
+			// if `lj-' prefix is specified, then the target is LuaJIT version
+			target.Lua = &Target{
+				Config:  LuaJitCfg,
+				Version: PickTargetVersionItem(LuaJitCfg, vers[3:], exactMatch),
+			}
+		} else {
+			// otherwise the target is Lua version.
+			target.Lua = &Target{
+				Config:  LuaCfg,
+				Version: PickTargetVersionItem(LuaCfg, vers, exactMatch),
+			}
+		}
+	}
+
+	if len(rocksVer) > 0 {
+		target.LuaRocks = &Target{
+			Config:  LuaRocksCfg,
+			Version: PickTargetVersionItem(LuaRocksCfg, rocksVer, exactMatch),
+		}
+	}
+
+	return target
+}
+
 func start() {
 	argv := os.Args[1:]
 	if len(argv) > 0 {
@@ -296,48 +346,13 @@ func start() {
 		CmdList()
 
 	case "install":
-		CmdInstall(LuaCfg, argv[1:])
-
-	case "install-lj":
-		argv = argv[1:]
-		if runtime.GOOS == "darwin" {
-			// set MACOSX_DEPLOYMENT_TARGET=10.8 by default
-			found := false
-			for _, arg := range argv {
-				found = strings.HasPrefix(arg, "MACOSX_DEPLOYMENT_TARGET")
-				if found {
-					break
-				}
-			}
-			if !found {
-				argv = append(argv, "MACOSX_DEPLOYMENT_TARGET=10.8")
-			}
-		}
-		CmdInstall(LuaJitCfg, argv)
-
-	case "install-rocks":
-		CheckLuaRocksRootDir()
-		CmdInstall(LuaRocksCfg, argv[1:])
+		CmdInstall(argv[1:])
 
 	case "uninstall":
-		CmdUninstall(LuaCfg, argv[1:])
-
-	case "uninstall-lj":
-		CmdUninstall(LuaJitCfg, argv[1:])
-
-	case "uninstall-rocks":
-		CheckLuaRocksRootDir()
-		CmdUninstall(LuaRocksCfg, argv[1:])
+		CmdUninstall(argv[1:])
 
 	case "use":
-		CmdUse(LuaCfg, argv[1:])
-
-	case "use-lj":
-		CmdUse(LuaJitCfg, argv[1:])
-
-	case "use-rocks":
-		CheckLuaRocksRootDir()
-		CmdUse(LuaRocksCfg, argv[1:])
+		CmdUse(argv[1:])
 
 	default:
 		CmdHelp(1, "unknown command %q", argv[0])

uninstall.go

@@ -5,40 +5,36 @@ import (
 	"path/filepath"
 )
 
-func CmdUninstall(cfg *TargetConfig, opts []string) {
-	// check target version
-	if len(opts) == 0 {
-		CmdHelp(1, "no version specified")
-	}
-
-	vers, err := NewVersionsFromFile(cfg.VersionFile)
+func uninstall(t *Target) {
+	dir := filepath.Join(t.Config.RootDir, t.Version.Ver)
+	stat, err := os.Stat(dir)
 	if err != nil {
-		fatalf("failed to read version file %q: %v", cfg.VersionFile, err)
+		if !os.IsNotExist(err) {
+			fatalf("failed to stat %q: %v", dir, err)
+		}
+		fatalf("%s version %s is not installed.", t.Config.Name, t.Version.Ver)
 	}
-
-	ver := opts[0]
-	item := vers.GetItem(ver)
-	if item == nil {
-		fatalf("%s version %q does not defined in %q", cfg.Name, ver, cfg.VersionFile)
+	if !stat.IsDir() {
+		fatalf("found %s %s (%q) but it is not a directory.\nplease remove it yourself.", t.Config.Name, t.Version.Ver, dir)
+	} else if err = os.RemoveAll(dir); err != nil {
+		fatalf("failed to uninstall version %s: %v", t.Version.Ver, err)
 	}
+	printf("%s version %s (%q) has been uninstalled.", t.Config.Name, t.Version.Ver, dir)
+}
 
-	infos, err := os.ReadDir(cfg.RootDir)
-	if err != nil {
-		fatalf("failed to readdir: %v", err)
-	}
+func CmdUninstall(opts []string) {
+	target := PickTargetVersion(opts[0], true)
 
-	for _, info := range infos {
-		if info.Name() == ver {
-			dir := filepath.Join(cfg.RootDir, ver)
-			if !info.IsDir() {
-				fatalf("found %s %s (%q) but it is not a directory.\nplease remove it yourself.", cfg.Name, ver, dir)
-			} else if err = os.RemoveAll(dir); err != nil {
-				fatalf("failed to uninstall version %s: %v", ver, err)
-			}
-			printf("%s version %s (%q) has been uninstalled.", cfg.Name, ver, dir)
-			return
-		}
+	// uninstall the specified version of lua
+	if target.Lua != nil {
+		uninstall(target.Lua)
+		// it is remove all the versions of luarocks
+		return
 	}
 
-	fatalf("%s version %q is not installed", cfg.Name, ver)
+	// uninstall the specified version of luarocks
+	if target.LuaRocks != nil {
+		CheckLuaRocksRootDir()
+		uninstall(target.LuaRocks)
+	}
 }

use.go

@@ -48,35 +48,13 @@ func UseInstalledVersion(cfg *TargetConfig, ver string) {
 	fatalf("%s version %q is not installed", cfg.Name, ver)
 }
 
-func CmdUse(cfg *TargetConfig, opts []string) {
-	// check target version
-	if len(opts) == 0 || (cfg != LuaRocksCfg && opts[0] == ":") {
-		CmdHelp(1, "no version specified")
-	}
-	ver := opts[0]
-
-	// check :<luarocks-version>
-	var rocksVer string
-	if cfg != LuaRocksCfg {
-		if delim := strings.Index(ver, ":"); delim != -1 {
-			rocksVer = ver[delim+1:]
-			ver = ver[:delim]
-		}
-	}
-
-	var verItem *VerItem
-	if len(ver) > 0 {
-		verItem = PickTargetVersionItem(cfg, ver)
-	}
-	var rocksItem *VerItem
-	if len(rocksVer) > 0 {
-		rocksItem = PickTargetVersionItem(LuaRocksCfg, rocksVer)
-	}
-
-	if verItem != nil {
-		UseInstalledVersion(cfg, verItem.Ver)
-	}
-	if rocksItem != nil {
-		UseInstalledVersion(LuaRocksCfg, rocksItem.Ver)
+func CmdUse(opts []string) {
+	target := PickTargetVersion(opts[0], false)
+	if target.Lua != nil {
+		UseInstalledVersion(target.Lua.Config, target.Lua.Version.Ver)
+	}
+	if target.LuaRocks != nil {
+		CheckLuaRocksRootDir()
+		UseInstalledVersion(target.LuaRocks.Config, target.LuaRocks.Version.Ver)
 	}
 }

vers.go

@@ -282,14 +282,20 @@ func ListTargetVersions(cfg *TargetConfig) string {
 	return b.String()
 }
 
-func PickTargetVersionItem(cfg *TargetConfig, ver string) *VerItem {
+func PickTargetVersionItem(cfg *TargetConfig, ver string, exactMatch bool) *VerItem {
 	print("check %s version %q definition ... ", cfg.Name, ver)
 	vers, err := NewVersionsFromFile(cfg.VersionFile)
 	if err != nil {
 		fatalf("failed to read version file %q: %v", cfg.VersionFile, err)
 	}
 
-	item := vers.PickItem(ver)
+	var item *VerItem
+	if exactMatch {
+		item = vers.GetItem(ver)
+	} else {
+		item = vers.PickItem(ver)
+	}
+
 	if item == nil {
 		printf("not found")
 		fatalf("%s version %q does not defined in %q\n%s", cfg.Name, ver, cfg.VersionFile, ListTargetVersions(cfg))