110 lines
3.0 KiB
Go
110 lines
3.0 KiB
Go
/*
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Copyright © 2023 NAME HERE <EMAIL ADDRESS>
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*/
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package cmd
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/spf13/cobra"
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)
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// tempCmd represents the temp command
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var (
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from string
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to string
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five_over_nine = float64(5) / float64(9)
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nine_over_five = float64(9) / float64(5)
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kconst = 273.15
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rconst = 459.67
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tempCmd = &cobra.Command{
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Use: "temp",
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Short: "A brief description of your command",
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Long: `A longer description that spans multiple lines and likely contains examples
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and usage of using your command. For example:
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Cobra is a CLI library for Go that empowers applications.
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This application is a tool to generate the needed files
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to quickly create a Cobra application.`,
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Args: cobra.MatchAll(cobra.ExactArgs(1)),
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RunE: func(cmd *cobra.Command, args []string) error {
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err := cmd.ParseFlags(args)
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if err != nil {
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return err
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}
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in, err := strconv.ParseFloat(args[0], 64)
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if err != nil {
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return err
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}
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var out float64
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switch strings.ToLower(cmd.Flag("from").Value.String()) {
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case "f", "farenheit":
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switch strings.ToLower(cmd.Flag("to").Value.String()) {
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case "f", "farenheit":
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out = in
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case "c", "celsius":
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out = ((in - 32) * five_over_nine)
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case "k", "kelvin":
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out = ((in-32)*five_over_nine + kconst)
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case "r", "rankine":
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out = in + rconst
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}
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case "c", "celsius":
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switch strings.ToLower(cmd.Flag("to").Value.String()) {
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case "f", "farenheit":
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out = in*nine_over_five + 32
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case "c", "celsius":
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out = in
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case "k", "kelvin":
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out = in + kconst
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case "r", "rankine":
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out = in*nine_over_five + rconst + 32
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}
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case "k", "kelvin":
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switch strings.ToLower(cmd.Flag("to").Value.String()) {
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case "f", "farenheit":
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out = (in-kconst)*nine_over_five + 32
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case "c", "celsius":
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out = in - kconst
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case "k", "kelvin":
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out = in
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case "r", "rankine":
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out = in * nine_over_five
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}
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case "r", "rankine":
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switch strings.ToLower(cmd.Flag("to").Value.String()) {
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case "f", "farenheit":
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out = in - rconst
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case "c", "celsius":
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out = (in - (rconst + 32)) * nine_over_five
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case "k", "kelvin":
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out = in * five_over_nine
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case "r", "rankine":
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out = in
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}
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}
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fmt.Println(strconv.FormatFloat(out, 'f', 2, 64))
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return nil
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},
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}
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)
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func init() {
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rootCmd.AddCommand(tempCmd)
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tempCmd.PersistentFlags().StringVarP(&from, "from", "f", "c", "unit system to convert from, (farenheit, celsius, kelvin)")
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tempCmd.PersistentFlags().StringVarP(&to, "to", "t", "f", "unit system to convert to, (farenheit, celsius, kelvin)")
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// Here you will define your flags and configuration settings.
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// Cobra supports Persistent Flags which will work for this command
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// and all subcommands, e.g.:
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// tempCmd.PersistentFlags().String("foo", "", "A help for foo")
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// Cobra supports local flags which will only run when this command
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// is called directly, e.g.:
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// tempCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
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}
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