Code improvements

- Removed yoda condition.
- Renamed/removed variables which shadows built-in names.
- Rewrited if-else-if-else chains to switch statements.

config.go

@@ -288,8 +288,7 @@ func continueTask(s string, cont bool) bool {
 
 	fmt.Print(bold(green(arrow)+" "+s), bold(postFix))
 
-	len, err := fmt.Scanln(&response)
-	if err != nil || len == 0 {
+	if _, err := fmt.Scanln(&response); err != nil {
 		return cont
 	}
 

download.go

@@ -164,15 +164,16 @@ func getPkgbuilds(pkgs []string) error {
 		for _, base := range allBases {
 			name := base.Pkgbase()
 			_, err = os.Stat(filepath.Join(wd, name))
-			if err != nil && !os.IsNotExist(err) {
+			switch {
+			case err != nil && !os.IsNotExist(err):
 				fmt.Fprintln(os.Stderr, bold(red(smallArrow)), err)
 				continue
-			} else if os.IsNotExist(err) || cmdArgs.existsArg("f", "force") || shouldUseGit(filepath.Join(wd, name)) {
+			case os.IsNotExist(err), cmdArgs.existsArg("f", "force"), shouldUseGit(filepath.Join(wd, name)):
 				if err = os.RemoveAll(filepath.Join(wd, name)); err != nil {
 					fmt.Fprintln(os.Stderr, bold(red(smallArrow)), err)
 					continue
 				}
-			} else {
+			default:
 				fmt.Printf("%s %s %s\n", yellow(smallArrow), cyan(name), "already downloaded -- use -f to overwrite")
 				continue
 			}
@@ -248,15 +249,16 @@ func getPkgbuildsfromABS(pkgs []string, path string) (bool, error) {
 		}
 
 		_, err = os.Stat(filepath.Join(path, name))
-		if err != nil && !os.IsNotExist(err) {
+		switch {
+		case err != nil && !os.IsNotExist(err):
 			fmt.Fprintln(os.Stderr, bold(red(smallArrow)), err)
 			continue
-		} else if os.IsNotExist(err) || cmdArgs.existsArg("f", "force") {
+		case os.IsNotExist(err), cmdArgs.existsArg("f", "force"):
 			if err = os.RemoveAll(filepath.Join(path, name)); err != nil {
 				fmt.Fprintln(os.Stderr, bold(red(smallArrow)), err)
 				continue
 			}
-		} else {
+		default:
 			fmt.Printf("%s %s %s\n", yellow(smallArrow), cyan(name), "already downloaded -- use -f to overwrite")
 			continue
 		}

install.go

@@ -134,7 +134,7 @@ func install(parser *arguments) error {
 		return show(passToPacman(parser))
 	}
 
-	if len(dp.Aur) > 0 && 0 == os.Geteuid() {
+	if len(dp.Aur) > 0 && os.Geteuid() == 0 {
 		return fmt.Errorf(bold(red(arrow)) + " Refusing to install AUR Packages as root, Aborting.")
 	}
 
@@ -165,12 +165,13 @@ func install(parser *arguments) error {
 	fmt.Println()
 
 	if do.HasMake() {
-		if config.RemoveMake == "yes" {
+		switch config.RemoveMake {
+		case "yes":
 			removeMake = true
-		} else if config.RemoveMake == "no" {
+		case "no":
 			removeMake = false
-		} else if continueTask("Remove make dependencies after install?", false) {
-			removeMake = true
+		default:
+			removeMake = continueTask("Remove make dependencies after install?", false)
 		}
 	}
 

parser.go

@@ -192,11 +192,12 @@ func (parser *arguments) addParam(option string, arg string) (err error) {
 		return
 	}
 
-	if parser.existsArg(option) {
+	switch {
+	case parser.existsArg(option):
 		parser.doubles[option] = struct{}{}
-	} else if isGlobal(option) {
+	case isGlobal(option):
 		parser.globals[option] = arg
-	} else {
+	default:
 		parser.options[option] = arg
 	}
 
@@ -779,13 +780,13 @@ func (parser *arguments) parseLongOption(arg string, param string) (usedNext boo
 
 	arg = arg[2:]
 
-	split := strings.SplitN(arg, "=", 2)
-	if len(split) == 2 {
+	switch split := strings.SplitN(arg, "=", 2); {
+	case len(split) == 2:
 		err = parser.addParam(split[0], split[1])
-	} else if hasParam(arg) {
+	case hasParam(arg):
 		err = parser.addParam(arg, param)
 		usedNext = true
-	} else {
+	default:
 		err = parser.addArg(arg)
 	}
 
@@ -822,13 +823,14 @@ func (parser *arguments) parseCommandLine() (err error) {
 				nextArg = args[k+1]
 			}
 
-			if parser.existsArg("--") {
+			switch {
+			case parser.existsArg("--"):
 				parser.addTarget(arg)
-			} else if strings.HasPrefix(arg, "--") {
+			case strings.HasPrefix(arg, "--"):
 				usedNext, err = parser.parseLongOption(arg, nextArg)
-			} else if strings.HasPrefix(arg, "-") {
+			case strings.HasPrefix(arg, "-"):
 				usedNext, err = parser.parseShortOption(arg, nextArg)
-			} else {
+			default:
 				parser.addTarget(arg)
 			}
 

print.go

@@ -219,7 +219,8 @@ func (do *depOrder) Print() {
 		push := false
 		pushMake := false
 
-		if len(base) > 1 || pkg != base[0].Name {
+		switch {
+		case len(base) > 1, pkg != base[0].Name:
 			pkgStr += " ("
 			pkgStrMake += " ("
 
@@ -237,10 +238,10 @@ func (do *depOrder) Print() {
 
 			pkgStr = pkgStr[:len(pkgStr)-1] + ")"
 			pkgStrMake = pkgStrMake[:len(pkgStrMake)-1] + ")"
-		} else if do.Runtime.get(base[0].Name) {
+		case do.Runtime.get(base[0].Name):
 			aurLen++
 			push = true
-		} else {
+		default:
 			aurMakeLen++
 			pushMake = true
 		}

query.go

@@ -414,21 +414,21 @@ func hangingPackages(removeOptional bool) (hanging []string, err error) {
 }
 
 func lastBuildTime() (time.Time, error) {
-	var time time.Time
+	var lastTime time.Time
 
 	pkgs, _, _, _, err := filterPackages()
 	if err != nil {
-		return time, err
+		return lastTime, err
 	}
 
 	for _, pkg := range pkgs {
 		thisTime := pkg.BuildDate()
-		if thisTime.After(time) {
-			time = thisTime
+		if thisTime.After(lastTime) {
+			lastTime = thisTime
 		}
 	}
 
-	return time, nil
+	return lastTime, nil
 }
 
 // Statistics returns statistics about packages installed in system