package textcomparison

import (
	"regexp"
	"strings"
)

func RemoveHtml(src string) string {
	//将HTML标签全转换成小写
	re, _ := regexp.Compile(`\\<[\\S\\s]+?\\>`)
	src = re.ReplaceAllStringFunc(src, strings.ToLower)

	//去除STYLE
	re, _ = regexp.Compile(`\\<style[\\S\\s]+?\\</style\\>`)
	src = re.ReplaceAllString(src, "")

	//去除SCRIPT
	re, _ = regexp.Compile(`\\<script[\\S\\s]+?\\</script\\>`)
	src = re.ReplaceAllString(src, "")

	//去除所有尖括号内的HTML代码，并换成换行符
	re, _ = regexp.Compile(`\\<[\\S\\s]+?\\>`)
	src = re.ReplaceAllString(src, "\n")

	//去除连续的换行符
	re, _ = regexp.Compile(`\\s{2,}`)
	src = re.ReplaceAllString(src, "\n")

	return src
}