47 lines
881 B
Go
47 lines
881 B
Go
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package cmd
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import (
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"errors"
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"github.com/spf13/cobra"
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"huffman/internal/huffman"
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"os"
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)
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var decodeCmd = &cobra.Command{
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Use: "decode <archive name> <file name>",
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Short: "Decodes the file",
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Args: func(cmd *cobra.Command, args []string) error {
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if len(args) < 2 {
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return errors.New("filename is required")
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}
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if _, err := os.Stat(args[0]); os.IsNotExist(err) {
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return errors.New("archive file is not exists")
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} else if err != nil {
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panic(err)
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}
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if _, err := os.Stat(args[1]); err == nil {
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return errors.New("output file exists")
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} else if !os.IsNotExist(err) {
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panic(err)
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}
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return nil
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},
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Run: func(cmd *cobra.Command, args []string) {
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fromFile, err := os.Open(args[0])
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if err != nil {
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panic(err)
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}
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toFile, err := os.Create(args[1])
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huffman.Decode(fromFile, toFile)
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},
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}
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func init() {
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rootCmd.AddCommand(decodeCmd)
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}
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