Xray-core: Refactor geodata (#5814)

https://github.com/XTLS/Xray-core/issues/4422#issuecomment-3533007890

Breaking changes https://github.com/XTLS/Xray-core/pull/5569

Reverts https://github.com/XTLS/Xray-core/pull/5505

Closes https://github.com/XTLS/Xray-core/pull/643

common/geodata/strmatcher/valuematcher_mph.go

@@ -0,0 +1,89 @@
+package strmatcher
+
+import "runtime"
+
+// A MphValueMatcher is divided into three parts:
+// 1. `full` and `domain` patterns are matched by Rabin-Karp algorithm and minimal perfect hash table;
+// 2. `substr` patterns are matched by ac automaton;
+// 3. `regex` patterns are matched with the regex library.
+type MphValueMatcher struct {
+	mph   *MphMatcherGroup
+	ac    *ACAutomatonMatcherGroup
+	regex *SimpleMatcherGroup
+}
+
+func NewMphValueMatcher() *MphValueMatcher {
+	return new(MphValueMatcher)
+}
+
+// Add implements ValueMatcher.Add.
+func (g *MphValueMatcher) Add(matcher Matcher, value uint32) {
+	switch matcher := matcher.(type) {
+	case FullMatcher:
+		if g.mph == nil {
+			g.mph = NewMphMatcherGroup()
+		}
+		g.mph.AddFullMatcher(matcher, value)
+	case DomainMatcher:
+		if g.mph == nil {
+			g.mph = NewMphMatcherGroup()
+		}
+		g.mph.AddDomainMatcher(matcher, value)
+	case SubstrMatcher:
+		if g.ac == nil {
+			g.ac = NewACAutomatonMatcherGroup()
+		}
+		g.ac.AddSubstrMatcher(matcher, value)
+	case *RegexMatcher:
+		if g.regex == nil {
+			g.regex = &SimpleMatcherGroup{}
+		}
+		g.regex.AddMatcher(matcher, value)
+	}
+}
+
+// Build implements ValueMatcher.Build.
+func (g *MphValueMatcher) Build() error {
+	if g.mph != nil {
+		runtime.GC() // peak mem
+		g.mph.Build()
+	}
+	runtime.GC() // peak mem
+	if g.ac != nil {
+		g.ac.Build()
+		runtime.GC() // peak mem
+	}
+	return nil
+}
+
+// Match implements ValueMatcher.Match.
+func (g *MphValueMatcher) Match(input string) []uint32 {
+	result := make([][]uint32, 0, 5)
+	if g.mph != nil {
+		if matches := g.mph.Match(input); len(matches) > 0 {
+			result = append(result, matches)
+		}
+	}
+	if g.ac != nil {
+		if matches := g.ac.Match(input); len(matches) > 0 {
+			result = append(result, matches)
+		}
+	}
+	if g.regex != nil {
+		if matches := g.regex.Match(input); len(matches) > 0 {
+			result = append(result, matches)
+		}
+	}
+	return CompositeMatches(result)
+}
+
+// MatchAny implements ValueMatcher.MatchAny.
+func (g *MphValueMatcher) MatchAny(input string) bool {
+	if g.mph != nil && g.mph.MatchAny(input) {
+		return true
+	}
+	if g.ac != nil && g.ac.MatchAny(input) {
+		return true
+	}
+	return g.regex != nil && g.regex.MatchAny(input)
+}