bakery/app/md/img.go

package md

import (
	"regexp"
)

func ReplaceImgUrl(val, host string) string {
	pattern := "\"([" + `\w` + ".=-\u4e00-\u9fa5]+).(png|jpg|jpeg|gif)"
	r := regexp.MustCompile(pattern)
	return r.ReplaceAllString(val, `"`+host+"/$1.$2")
}