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title_filter.go
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/
title_filter.go
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package parser
import (
"fmt"
"regexp"
"strings"
)
// TitleFilter 根据规则过滤标题
type TitleFilter interface {
FilterTitleContent(content string) bool
}
type DefaultFilter struct {
// 排除某些标题
ExcludeTitles []string
// 排除符合regexp匹配的title
ExcludeRegExp *regexp.Regexp
}
// SetExcludeTitles 将由逗号分隔的一串标题分割成slice并设置
func (filter *DefaultFilter) SetExcludeTitles(titles string) {
filter.ExcludeTitles = strings.Split(titles, ",")
}
func (filter *DefaultFilter) SetExcludeRegExp(reg string) (err error) {
if reg == "" {
return
}
filter.ExcludeRegExp, err = regexp.Compile(reg)
if err != nil {
return fmt.Errorf("parse exclude-filter error: %v", err)
}
return
}
// FilterTitleContent 根据title的内容过滤标题
// 返回true表示title需要被过滤
func (filter *DefaultFilter) FilterTitleContent(content string) bool {
for i := range filter.ExcludeTitles {
if content == filter.ExcludeTitles[i] {
return true
}
}
if filter.ExcludeRegExp == nil {
return false
}
return filter.ExcludeRegExp.MatchString(content)
}