47 lines
904 B
Go
47 lines
904 B
Go
package config
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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)
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func ParseSize(sizeStr string) (int64, error) {
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sizeStr = strings.TrimSpace(sizeStr)
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if sizeStr == "" {
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return 0, nil
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}
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// 正则匹配：数字 + 单位
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re := regexp.MustCompile(`(?i)^(\d+)\s*([KMGT]?B?)$`)
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matches := re.FindStringSubmatch(sizeStr)
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if len(matches) != 3 {
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return 0, fmt.Errorf("无效的大小格式: %s", sizeStr)
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}
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value, err := strconv.ParseInt(matches[1], 10, 64)
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if err != nil {
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return 0, err
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}
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unit := strings.ToUpper(matches[2])
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var multiplier int64 = 1
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switch unit {
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case "B", "":
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multiplier = 1
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case "KB", "K":
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multiplier = 1024
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case "MB", "M":
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multiplier = 1024 * 1024
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case "GB", "G":
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multiplier = 1024 * 1024 * 1024
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case "TB", "T":
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multiplier = 1024 * 1024 * 1024 * 1024
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default:
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return 0, fmt.Errorf("未知的单位: %s", unit)
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}
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return value * multiplier, nil
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}
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