feat: Phase2 JLine终端交互增强 - 行编辑、历史、Tab补全、信号处理

JLine 3 集成: - ReplSession重写: JLine Terminal + LineReader 替代Scanner - 支持行编辑（光标移动、删除、Home/End等） - 持久化历史记录（~/.claude-code-java/history） - 上下箭头浏览输入历史 - Ctrl+C取消当前输入、Ctrl+D退出 - JLine失败时自动降级到Scanner模式 Tab补全: - ClaudeCodeCompleter: 斜杠命令补全（/后按Tab） - 支持命令别名补全（如 /q → exit） - 分组显示（Commands / Aliases）新增命令: - /model: 显示当前AI模型信息 - /compact: 压缩对话上下文 - /cost: Token用量显示（占位）改进: - HelpCommand清理为统一格式 - Banner增加终端信息显示和快捷键提示 - 彩色提示符使用AttributedStringBuilder Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-04-01 20:18:59 +08:00
parent 70c9ebed2b
commit b29d61581a
7 changed files with 358 additions and 53 deletions
@@ -0,0 +1,34 @@
+package com.claudecode.command.impl;
+
+import com.claudecode.command.CommandContext;
+import com.claudecode.command.SlashCommand;
+import com.claudecode.console.AnsiStyle;
+
+/**
+ * /compact 命令 —— 压缩当前对话上下文。
+ * <p>
+ * 对应 claude-code/src/commands/compact.ts。
+ * 当前为简化实现，直接清空历史并提示用户。
+ */
+public class CompactCommand implements SlashCommand {
+
+    @Override
+    public String name() {
+        return "compact";
+    }
+
+    @Override
+    public String description() {
+        return "Compact conversation context";
+    }
+
+    @Override
+    public String execute(String args, CommandContext context) {
+        if (context.agentLoop() != null) {
+            int before = context.agentLoop().getMessageHistory().size();
+            context.agentLoop().reset();
+            return AnsiStyle.green("  ✓ Context compacted: " + before + " messages → 1 (system prompt only)");
+        }
+        return AnsiStyle.yellow("  ⚠ No active conversation to compact.");
+    }
+}
@@ -0,0 +1,44 @@
+package com.claudecode.command.impl;
+
+import com.claudecode.command.CommandContext;
+import com.claudecode.command.SlashCommand;
+import com.claudecode.console.AnsiStyle;
+
+/**
+ * /cost 命令 —— 显示 Token 使用量和费用估算。
+ * <p>
+ * 对应 claude-code/src/commands/cost.ts。
+ * 当前为占位实现，后续接入实际 Token 统计。
+ */
+public class CostCommand implements SlashCommand {
+
+    @Override
+    public String name() {
+        return "cost";
+    }
+
+    @Override
+    public String description() {
+        return "Show token usage and cost";
+    }
+
+    @Override
+    public String execute(String args, CommandContext context) {
+        int msgCount = 0;
+        if (context.agentLoop() != null) {
+            msgCount = context.agentLoop().getMessageHistory().size();
+        }
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("\n");
+        sb.append(AnsiStyle.bold("  Token Usage:\n\n"));
+        sb.append("  Messages:     ").append(AnsiStyle.cyan(String.valueOf(msgCount))).append("\n");
+        sb.append("  Input tokens: ").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
+        sb.append("  Output tokens:").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
+        sb.append("  Est. cost:    ").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
+        sb.append("\n");
+        sb.append(AnsiStyle.dim("  Token tracking will be added in a future update."));
+
+        return sb.toString();
+    }
+}
@@ -1,6 +1,7 @@
 package com.claudecode.command.impl;

 import com.claudecode.command.CommandContext;
+import com.claudecode.command.CommandRegistry;
 import com.claudecode.command.SlashCommand;
 import com.claudecode.console.AnsiStyle;

@@ -31,24 +32,21 @@ public class HelpCommand implements SlashCommand {
        StringBuilder sb = new StringBuilder();
        sb.append(AnsiStyle.bold("\n  Available Commands:\n\n"));

-        for (SlashCommand cmd : context.toolRegistry() != null
-                ? List.<SlashCommand>of() // 这里后续会获取注册的命令
-                : List.<SlashCommand>of()) {
-            sb.append(String.format("  %s%-12s%s %s%n",
-                    AnsiStyle.CYAN, "/" + cmd.name(), AnsiStyle.RESET, cmd.description()));
-        }
-
-        // 硬编码展示（后续重构为动态）
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/help", AnsiStyle.RESET, "Show available commands"));
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/clear", AnsiStyle.RESET, "Clear conversation history"));
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/compact", AnsiStyle.RESET, "Compact conversation context"));
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/cost", AnsiStyle.RESET, "Show token usage and cost"));
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/model", AnsiStyle.RESET, "Show or switch AI model"));
-        sb.append(String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/exit", AnsiStyle.RESET, "Exit the application"));
+        // 从注入的 CommandRegistry 获取不到（因为 context 里没有），所以硬编码与注册保持一致
+        sb.append(formatCmd("help", "Show available commands"));
+        sb.append(formatCmd("clear", "Clear conversation history"));
+        sb.append(formatCmd("compact", "Compact conversation context"));
+        sb.append(formatCmd("cost", "Show token usage and cost"));
+        sb.append(formatCmd("model", "Show or switch AI model"));
+        sb.append(formatCmd("exit", "Exit the application (also: /quit, /q)"));

        sb.append("\n");
-        sb.append(AnsiStyle.dim("  Tips: Press Tab for command completion, Ctrl+D to exit\n"));
+        sb.append(AnsiStyle.dim("  Shortcuts: Tab to autocomplete, ↑↓ to browse history, Ctrl+D to exit\n"));

        return sb.toString();
    }
+
+    private String formatCmd(String name, String desc) {
+        return String.format("  %s%-12s%s %s%n", AnsiStyle.CYAN, "/" + name, AnsiStyle.RESET, desc);
+    }
 }
@@ -0,0 +1,46 @@
+package com.claudecode.command.impl;
+
+import com.claudecode.command.CommandContext;
+import com.claudecode.command.SlashCommand;
+import com.claudecode.console.AnsiStyle;
+
+import java.util.List;
+
+/**
+ * /model 命令 —— 显示或切换当前 AI 模型。
+ */
+public class ModelCommand implements SlashCommand {
+
+    @Override
+    public String name() {
+        return "model";
+    }
+
+    @Override
+    public String description() {
+        return "Show or switch AI model";
+    }
+
+    @Override
+    public List<String> aliases() {
+        return List.of("m");
+    }
+
+    @Override
+    public String execute(String args, CommandContext context) {
+        // 当前只显示信息，后续可扩展为切换模型
+        StringBuilder sb = new StringBuilder();
+        sb.append("\n");
+        sb.append(AnsiStyle.bold("  Model Configuration:\n\n"));
+        sb.append("  Provider:  ").append(AnsiStyle.cyan("Anthropic")).append("\n");
+        sb.append("  Model:     ").append(AnsiStyle.cyan(
+                System.getenv().getOrDefault("AI_MODEL", "claude-sonnet-4-20250514"))).append("\n");
+
+        if (args != null && !args.isBlank()) {
+            sb.append("\n");
+            sb.append(AnsiStyle.yellow("  ⚠ Model switching not yet implemented. Set AI_MODEL env variable."));
+        }
+
+        return sb.toString();
+    }
+}