58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package cmd
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import (
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"fmt"
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"strings"
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"archgrid.xyz/ag/tools/types"
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"archgrid.xyz/ag/toolsbox/hash/crc32"
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"github.com/spf13/cobra"
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)
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var (
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crc32Algorithm types.CRC32Algorithm = types.CRC32_IEEE
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crc32Endian types.Endian = types.LittleEndian
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crc32File bool
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)
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var crc32Cmd = &cobra.Command{
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Use: "crc32",
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Short: `CRC32校验`,
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Long: `对给定的内容进行CRC32校验计算。`,
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Args: cobra.MinimumNArgs(1),
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Run: crc32Execute,
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}
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func crc32Execute(cmd *cobra.Command, args []string) {
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var (
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result []byte
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err error
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)
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if crc32File {
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result, err = crc32.SumFile(args[0], crc32Algorithm.IntoCRC32Mode())
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} else {
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result = crc32.CRC32([]byte(args[0]), crc32Algorithm.IntoCRC32Mode())
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}
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if err != nil {
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fmt.Printf("计算CRC32校验值时发生错误：%s\n", err)
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return
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}
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if crc32Endian == types.LittleEndian {
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for i, j := 0, len(result)-1; i < j; i, j = i+1, j-1 {
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result[i], result[j] = result[j], result[i]
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}
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}
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var builder strings.Builder
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for _, b := range result {
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builder.WriteString(fmt.Sprintf(" %02X", b))
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}
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fmt.Printf("CRC32校验值：%s\n", builder.String())
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}
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func init() {
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crc32Cmd.PersistentFlags().VarP(&crc32Algorithm, "algorithm", "a", "CRC32算法，可选值有：ieee, castagnoli, koopman，缺省值为ieee。")
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crc32Cmd.PersistentFlags().VarP(&crc32Endian, "endian", "e", "字节序，可选值有：big, little，缺省值为little。")
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crc32Cmd.PersistentFlags().BoolVarP(&crc32File, "file", "f", false, "从文件中读取内容")
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rootCmd.AddCommand(crc32Cmd)
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}
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