vikingowl
c4fde583f5
Apply gofmt -w across the codebase (struct field comment realignment only — no semantic changes) and silence two errcheck warnings on fmt.Sscanf / fmt.Fprintf return values in internal/router/discovery with explicit `_, _ =` discards. Required so `make check` is green before tagging v0.1.0.
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
package fs
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import (
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"context"
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"somegit.dev/Owlibou/gnoma/internal/tool"
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)
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const writeToolName = "fs.write"
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var writeParams = json.RawMessage(`{
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"type": "object",
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"properties": {
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"path": {
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"type": "string",
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"description": "Absolute path to the file to write"
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},
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"content": {
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"type": "string",
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"description": "Content to write to the file"
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}
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},
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"required": ["path", "content"]
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}`)
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type WriteOption func(*WriteTool)
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// WithMaxFileSize rejects writes where the content exceeds n bytes. 0 means no limit.
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func WithMaxFileSize(n int64) WriteOption {
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return func(t *WriteTool) { t.maxFileSize = n }
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}
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type WriteTool struct {
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maxFileSize int64
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guard *Guard
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}
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func (t *WriteTool) SetGuard(g *Guard) { t.guard = g }
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func NewWriteTool(opts ...WriteOption) *WriteTool {
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t := &WriteTool{}
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for _, opt := range opts {
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opt(t)
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}
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return t
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}
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func (t *WriteTool) Name() string { return writeToolName }
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func (t *WriteTool) Description() string {
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return "Write content to a file, creating parent directories as needed"
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}
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func (t *WriteTool) Parameters() json.RawMessage { return writeParams }
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func (t *WriteTool) IsReadOnly() bool { return false }
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func (t *WriteTool) IsDestructive() bool { return false }
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func (t *WriteTool) Category() tool.Category { return tool.CategoryWrite }
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func (t *WriteTool) ExtractPaths(args json.RawMessage) []string {
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var a writeArgs
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if err := json.Unmarshal(args, &a); err != nil {
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return nil
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}
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return []string{a.Path}
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}
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type writeArgs struct {
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Path string `json:"path"`
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Content string `json:"content"`
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}
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func (t *WriteTool) Execute(_ context.Context, args json.RawMessage) (tool.Result, error) {
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var a writeArgs
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if err := json.Unmarshal(args, &a); err != nil {
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return tool.Result{}, fmt.Errorf("fs.write: invalid args: %w", err)
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}
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if a.Path == "" {
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return tool.Result{}, fmt.Errorf("fs.write: path required")
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}
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if t.maxFileSize > 0 && int64(len(a.Content)) > t.maxFileSize {
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return tool.Result{Output: fmt.Sprintf("Error: content too large (%d bytes, limit %d bytes)", len(a.Content), t.maxFileSize)}, nil
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}
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path := a.Path
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if t.guard != nil {
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resolved, err := t.guard.ResolveWrite(path)
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if err != nil {
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return tool.Result{Output: fmt.Sprintf("Error: %v", err)}, nil
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}
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path = resolved
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}
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// Create parent directories
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dir := filepath.Dir(path)
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if err := os.MkdirAll(dir, 0o755); err != nil {
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return tool.Result{Output: fmt.Sprintf("Error creating directory: %v", err)}, nil
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}
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if err := os.WriteFile(path, []byte(a.Content), 0o644); err != nil {
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return tool.Result{Output: fmt.Sprintf("Error writing file: %v", err)}, nil
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}
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return tool.Result{
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Output: fmt.Sprintf("Wrote %d bytes to %s", len(a.Content), path),
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Metadata: map[string]any{"bytes_written": len(a.Content), "path": path},
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}, nil
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}
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