上传文件至 'w10'

w10/ParseStrategies.java

@@ -0,0 +1,82 @@
+import java.time.LocalDate;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.regex.Pattern;
+
+// ─────────────────────────────────────────────
+// 策略接口
+// ─────────────────────────────────────────────
+interface ParseStrategy {
+    boolean supports(String url);
+    Article parse(String url);
+    String  getName();
+    default int getPriority() { return 100; }
+}
+
+// ─────────────────────────────────────────────
+// 策略实现1：GitHub 专属（priority=10）
+// ─────────────────────────────────────────────
+class GithubParseStrategy implements ParseStrategy {
+    @Override
+    public boolean supports(String url) {
+        return url != null && url.matches("^https?://(www\\.)?github\\.com/.*");
+    }
+
+    @Override
+    public Article parse(String url) {
+        String path  = url.replaceFirst("https?://(www\\.)?github\\.com/", "");
+        String[] parts = path.split("/");
+        String owner = parts.length > 0 ? parts[0] : "unknown";
+        String repo  = parts.length > 1 ? parts[1] : "repo";
+        return new Article("[GitHub] " + owner + "/" + repo, url,
+                           "(GitHub stub)", owner, LocalDate.now());
+    }
+
+    @Override public String getName()    { return "GithubParseStrategy"; }
+    @Override public int    getPriority(){ return 10; }
+}
+
+// ─────────────────────────────────────────────
+// 策略实现2：通用默认兜底（priority=999）
+// ─────────────────────────────────────────────
+class DefaultParseStrategy implements ParseStrategy {
+    private static final Pattern URL_PATTERN =
+        Pattern.compile("^https?://[^\\s/$.?#].[^\\s]*$");
+
+    @Override
+    public boolean supports(String url) {
+        return url != null && URL_PATTERN.matcher(url).matches();
+    }
+
+    @Override
+    public Article parse(String url) {
+        String domain = url.replaceFirst("https?://", "").replaceAll("/.*", "");
+        return new Article("文章来自 " + domain, url,
+                           "(default stub)", "unknown", LocalDate.now());
+    }
+
+    @Override public String getName()    { return "DefaultParseStrategy"; }
+    @Override public int    getPriority(){ return 999; }
+}
+
+// ─────────────────────────────────────────────
+// 策略选择器
+// ─────────────────────────────────────────────
+class StrategySelector {
+    private final List<ParseStrategy> strategies = new ArrayList<>();
+
+    public StrategySelector() {
+        strategies.add(new GithubParseStrategy());
+        strategies.add(new DefaultParseStrategy());
+        strategies.sort(Comparator.comparingInt(ParseStrategy::getPriority));
+    }
+
+    public ParseStrategy select(String url) {
+        return strategies.stream()
+                         .filter(s -> s.supports(url))
+                         .findFirst().orElse(null);
+    }
+
+    public List<ParseStrategy> getAll() { return List.copyOf(strategies); }
+}