基本機能実装

1 files changed, 81 insertions, 0 deletions

diff --git a/src/ollama_web/tools/registry.py b/src/ollama_web/tools/registry.py
new file mode 100644
index 0000000..92b321c
--- /dev/null
+++ b/src/ollama_web/tools/registry.py
@@ -0,0 +1,81 @@
+"""Registry of tools exposed to the LLM."""
+
+from __future__ import annotations
+
+import json
+from collections.abc import Callable, Sequence
+from dataclasses import dataclass, field
+
+from .scrape import scrape_url
+from .search import web_search
+
+
+@dataclass
+class ToolRegistry:
+    """A simple registry mapping tool names to callable implementations."""
+
+    _tools: dict[str, Callable[..., object]] = field(default_factory=dict)
+
+    def register(self, func: Callable[..., object]) -> Callable[..., object]:
+        """Register a callable under its ``__name__``."""
+        self._tools[func.__name__] = func
+        return func
+
+    @property
+    def names(self) -> list[str]:
+        return list(self._tools.keys())
+
+    @property
+    def callables(self) -> list[Callable[..., object]]:
+        return list(self._tools.values())
+
+    def get(self, name: str) -> Callable[..., object] | None:
+        return self._tools.get(name)
+
+    def execute(self, name: str, arguments: dict[str, object] | str) -> str:
+        """Execute a named tool and return a JSON-encoded string result.
+
+        Args:
+          name: The tool function name.
+          arguments: Either a dict of keyword arguments or a JSON string that
+            decodes to one.
+
+        Returns:
+          A JSON string representation of the tool's return value, or an error
+          object when the tool is unknown or raises.
+        """
+        func = self.get(name)
+        if func is None:
+            return json.dumps({"error": f"Unknown tool: {name}"})
+
+        if isinstance(arguments, str):
+            try:
+                arguments = json.loads(arguments) if arguments else {}
+            except json.JSONDecodeError:
+                return json.dumps({"error": f"Invalid JSON arguments for {name}: {arguments}"})
+
+        try:
+            result = func(**arguments)
+        except Exception as exc:  # noqa: BLE001
+            return json.dumps({"error": f"{type(exc).__name__}: {exc}"})
+
+        if isinstance(result, str):
+            return result
+        try:
+            return json.dumps(result, ensure_ascii=False, default=str)
+        except (TypeError, ValueError):
+            return str(result)
+
+
+def default_registry() -> ToolRegistry:
+    """Build a registry pre-loaded with the built-in tools."""
+    reg = ToolRegistry()
+    reg.register(web_search)
+    reg.register(scrape_url)
+    return reg
+
+
+def all_tool_callables(registry: ToolRegistry | None = None) -> Sequence[Callable[..., object]]:
+    """Return the list of callables suitable for ``ollama`` ``tools`` argument."""
+    reg = registry or default_registry()
+    return reg.callables
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