78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
package utils
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"os"
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"os/exec"
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"time"
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)
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// CommandExists 检查命令是否存在
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func CommandExists(cmd string) bool {
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_, err := exec.LookPath(cmd)
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return err == nil
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}
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// FileExists 检查文件是否存在
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func FileExists(path string) bool {
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_, err := os.Stat(path)
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return err == nil || !os.IsNotExist(err)
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}
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func GenerateID() (string, error) {
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bytes := make([]byte, 16)
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if _, err := rand.Read(bytes); err != nil {
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return "", err
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}
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return hex.EncodeToString(bytes), nil
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}
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func GetTimestamp() string {
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return time.Now().Format("2006-01-02 15:04:05")
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}
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func OutputMaps(maps map[string]string) []string {
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output := []string{}
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maxLen := 0
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for key := range maps {
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if len(key) > maxLen {
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maxLen = len(key)
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}
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}
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// 使用动态宽度的格式化字符串输出
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// %-*s 的含义
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// %: 格式化开始
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// -: 左对齐,默认是右对齐
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// *: 表示宽度由后续参数指定(maxLen)
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// s: 表示字符串类型
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for key, value := range maps {
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output = append(output, fmt.Sprintf("%-*s: %s", maxLen, key, value))
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}
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return output
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}
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// 定义短语
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const (
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NoAvailableNetworkInterfaces = "No available network interfaces"
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)
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// 定义目录
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const (
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DefaultBaseDir string = "/etc/sunhpc"
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DefaultTmplDir string = DefaultBaseDir + "/tmpl.d"
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DefaultLogDir string = "/var/log/sunhpc"
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DefaultLogFile string = DefaultLogDir + "/sunhpc.log"
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)
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// 定义数据库
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const (
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DefaultDBName string = "sunhpc.db"
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DefaultDBPath string = "/var/lib/sunhpc"
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DefaultDBArgs string = "_foreign_keys=on&_journal_mode=WAL&_timeout=5000"
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)
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