95 lines
1.8 KiB
Go
95 lines
1.8 KiB
Go
package geodata
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import (
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"fmt"
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"github.com/Dreamacro/clash/component/geodata/router"
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C "github.com/Dreamacro/clash/constant"
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"strings"
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)
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var geoLoaderName = "memconservative"
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// geoLoaderName = "standard"
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func LoaderName() string {
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return geoLoaderName
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}
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func SetLoader(newLoader string) {
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if newLoader == "memc" {
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newLoader = "memconservative"
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}
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geoLoaderName = newLoader
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}
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func Verify(name string) bool {
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switch name {
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case C.GeositeName:
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_, _, err := LoadGeoSiteMatcher("CN")
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return err == nil
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case C.GeoipName:
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_, _, err := LoadGeoIPMatcher("CN")
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return err == nil
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default:
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return false
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}
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}
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func LoadGeoSiteMatcher(countryCode string) (*router.DomainMatcher, int, error) {
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if len(countryCode) == 0 {
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return nil, 0, fmt.Errorf("country code could not be empty")
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}
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not := false
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if countryCode[0] == '!' {
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not = true
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countryCode = countryCode[1:]
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}
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geoLoader, err := GetGeoDataLoader(geoLoaderName)
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if err != nil {
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return nil, 0, err
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}
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domains, err := geoLoader.LoadGeoSite(countryCode)
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if err != nil {
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return nil, 0, err
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}
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/**
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linear: linear algorithm
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matcher, err := router.NewDomainMatcher(domains)
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mph：minimal perfect hash algorithm
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*/
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matcher, err := router.NewMphMatcherGroup(domains, not)
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if err != nil {
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return nil, 0, err
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}
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return matcher, len(domains), nil
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}
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func LoadGeoIPMatcher(country string) (*router.GeoIPMatcher, int, error) {
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geoLoader, err := GetGeoDataLoader(geoLoaderName)
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if err != nil {
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return nil, 0, err
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}
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records, err := geoLoader.LoadGeoIP(strings.ReplaceAll(country, "!", ""))
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if err != nil {
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return nil, 0, err
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}
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geoIP := &router.GeoIP{
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CountryCode: country,
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Cidr: records,
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ReverseMatch: strings.Contains(country, "!"),
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}
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matcher, err := router.NewGeoIPMatcher(geoIP)
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if err != nil {
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return nil, 0, err
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}
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return matcher, len(records), nil
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}
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