forked from golang/hotime
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
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package util
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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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// 获取微信客户端的版本.
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// userAgent: 微信内置浏览器的 User-Agent;
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// x, y, z, w: 如果微信版本为 5.3.1.2 则有 x==5, y==3, z==1, w==2
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// err: 错误信息
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func WXVersion(userAgent string) (x, y, z, w int, err error) {
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userAgent = versionRegexp.FindString(userAgent)
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if userAgent == "" {
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err = fmt.Errorf("不是有效的微信浏览器 User-Agent: %s", userAgent)
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return
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}
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userAgent = userAgent[len("MicroMessenger/"):]
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strArr := strings.Split(userAgent, ".")
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verArr := make([]int, len(strArr))
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for i, str := range strArr {
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verArr[i], err = strconv.Atoi(str)
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if err != nil {
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err = fmt.Errorf("不是有效的微信浏览器 User-Agent: %s", userAgent)
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return
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}
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}
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switch len(verArr) {
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default:
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fallthrough
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case 4:
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x = verArr[0]
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y = verArr[1]
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z = verArr[2]
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w = verArr[3]
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return
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case 3:
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x = verArr[0]
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y = verArr[1]
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z = verArr[2]
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return
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case 2:
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x = verArr[0]
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y = verArr[1]
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return
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case 1:
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x = verArr[0]
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return
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}
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}
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// Mozilla/5.0 (Linux; Android 4.4.4; Che1-CL10 Build/Che1-CL10; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.49 Mobile MQQBrowser/6.2 TBS/043128 Safari/537.36 MicroMessenger/6.5.7.1041 NetType/WIFI Language/zh_CN
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var versionRegexp = regexp.MustCompile(`MicroMessenger/\d+(\.\d+)*`)
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