library

cmd/root.go

@@ -1,7 +1,3 @@
-/*
-Copyright © 2023 NAME HERE <EMAIL ADDRESS>
-
-*/
 package cmd
 
 import (
@@ -10,9 +6,6 @@ import (
 	"github.com/spf13/cobra"
 )
 
-
-
-// rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "converter",
 	Short: "A brief description of your application",
@@ -22,30 +15,11 @@ examples and usage of using your application. For example:
 Cobra is a CLI library for Go that empowers applications.
 This application is a tool to generate the needed files
 to quickly create a Cobra application.`,
-	// Uncomment the following line if your bare application
-	// has an action associated with it:
-	// Run: func(cmd *cobra.Command, args []string) { },
 }
 
-// Execute adds all child commands to the root command and sets flags appropriately.
-// This is called by main.main(). It only needs to happen once to the rootCmd.
 func Execute() {
 	err := rootCmd.Execute()
 	if err != nil {
 		os.Exit(1)
 	}
 }
-
-func init() {
-	// Here you will define your flags and configuration settings.
-	// Cobra supports persistent flags, which, if defined here,
-	// will be global for your application.
-
-	// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.converter.yaml)")
-
-	// Cobra also supports local flags, which will only run
-	// when this action is called directly.
-	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
-}
-
-

cmd/temp.go

@@ -1,6 +1,3 @@
-/*
-Copyright © 2023 NAME HERE <EMAIL ADDRESS>
-*/
 package cmd
 
 import (
@@ -8,10 +5,10 @@ import (
 	"strconv"
 	"strings"
 
+	u "github.com/bcicen/go-units"
 	"github.com/spf13/cobra"
 )
 
-// tempCmd represents the temp command
 var (
 	from           string
 	to             string
@@ -34,76 +31,50 @@ to quickly create a Cobra application.`,
 			if err != nil {
 				return err
 			}
-
 			in, err := strconv.ParseFloat(args[0], 64)
 			if err != nil {
 				return err
 			}
-			var out float64
+			fromFlag := strings.ToLower(cmd.Flag("from").Value.String())
-			switch strings.ToLower(cmd.Flag("from").Value.String()) {
+			toFlag := strings.ToLower(cmd.Flag("to").Value.String())
+			var out u.Value
+			switch fromFlag {
 			case "f", "farenheit":
-				switch strings.ToLower(cmd.Flag("to").Value.String()) {
+				out, err = Convert(in, toFlag, u.Fahrenheit)
-				case "f", "farenheit":
+				if err != nil {
-					out = in
+					return err
-				case "c", "celsius":
-					out = ((in - 32) * five_over_nine)
-				case "k", "kelvin":
-					out = ((in-32)*five_over_nine + kconst)
-				case "r", "rankine":
-					out = in + rconst
 				}
 			case "c", "celsius":
-				switch strings.ToLower(cmd.Flag("to").Value.String()) {
+				out, err = Convert(in, toFlag, u.Celsius)
-				case "f", "farenheit":
+				if err != nil {
-					out = in*nine_over_five + 32
+					return err
-				case "c", "celsius":
-					out = in
-				case "k", "kelvin":
-					out = in + kconst
-				case "r", "rankine":
-					out = in*nine_over_five + rconst + 32
 				}
 			case "k", "kelvin":
-				switch strings.ToLower(cmd.Flag("to").Value.String()) {
+				out, err = Convert(in, toFlag, u.Kelvin)
-				case "f", "farenheit":
+				if err != nil {
-					out = (in-kconst)*nine_over_five + 32
+					return err
-				case "c", "celsius":
-					out = in - kconst
-				case "k", "kelvin":
-					out = in
-				case "r", "rankine":
-					out = in * nine_over_five
-				}
-			case "r", "rankine":
-				switch strings.ToLower(cmd.Flag("to").Value.String()) {
-				case "f", "farenheit":
-					out = in - rconst
-				case "c", "celsius":
-					out = (in - (rconst + 32)) * nine_over_five
-				case "k", "kelvin":
-					out = in * five_over_nine
-				case "r", "rankine":
-					out = in
 				}
 			}
-			fmt.Println(strconv.FormatFloat(out, 'f', 2, 64))
+			fmt.Println(out.String())
 			return nil
 		},
 	}
 )
 
+func Convert(in float64, to string, from u.Unit) (u.Value, error) {
+	switch to {
+	case "f", "farenheit":
+		return u.ConvertFloat(in, from, u.Fahrenheit)
+	case "c", "celsius":
+		return u.ConvertFloat(in, from, u.Celsius)
+	case "k", "kelvin":
+		return u.ConvertFloat(in, from, u.Kelvin)
+	}
+	return u.Value{}, fmt.Errorf("Invalid flags provided")
+}
+
 func init() {
 	rootCmd.AddCommand(tempCmd)
 	tempCmd.PersistentFlags().StringVarP(&from, "from", "f", "c", "unit system to convert from, (farenheit, celsius, kelvin)")
 	tempCmd.PersistentFlags().StringVarP(&to, "to", "t", "f", "unit system to convert to, (farenheit, celsius, kelvin)")
-
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// tempCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// tempCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 }

go.mod

@@ -3,6 +3,9 @@ module gitea.asdf.cafe/abs3nt/converter
 go 1.20
 
 require (
+	github.com/Knetic/govaluate v3.0.0+incompatible // indirect
+	github.com/bcicen/bfstree v1.0.0 // indirect
+	github.com/bcicen/go-units v1.0.4 // indirect
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/spf13/cobra v1.6.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect

go.sum

@@ -1,3 +1,9 @@
+github.com/Knetic/govaluate v3.0.0+incompatible h1:7o6+MAPhYTCF0+fdvoz1xDedhRb4f6s9Tn1Tt7/WTEg=
+github.com/Knetic/govaluate v3.0.0+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/bcicen/bfstree v1.0.0 h1:Fx9vcyXYspj2GIJqAvd1lwCNI+cQF/r2JJqxHHmsAO0=
+github.com/bcicen/bfstree v1.0.0/go.mod h1:u//juIip96SNFkG4iMn9z0KzqLSeFSpBKoBo5ceq1uE=
+github.com/bcicen/go-units v1.0.4 h1:ZSllGgj9jFa9n3EikJqkeZr5I0qDlnCTutGHfPhGv2M=
+github.com/bcicen/go-units v1.0.4/go.mod h1:c7/sSz9cc6XvnrjsyNwoKHqN6KDDf8LME5vSf+U5Y08=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=