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Dimitar Grigorov
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Add tree tool.
Optimized the tools description
1 parent bc5bf14 commit 7b602a7

File tree

6 files changed

+358
-22
lines changed

6 files changed

+358
-22
lines changed

‎README.md‎

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -6,12 +6,14 @@ Non-UTF-8 file encoding server: Cyrillic (CP1251, KOI8), Windows-1250-1258, ISO-
66

77
## What It Does
88

9-
Provides 12 tools for file operations with automatic encoding conversion:
9+
Provides 14 tools for file operations with automatic encoding conversion:
1010
- `read_text_file` - Read files with encoding auto-detection and conversion
11+
- `read_multiple_files` - Read multiple files concurrently with encoding support
1112
- `write_file` - Write files in specific encodings
1213
- `edit_file` - Line-based edits with diff preview and whitespace-flexible matching
1314
- `list_directory` - Browse directories with pattern filtering
14-
- `directory_tree` - Get recursive tree view as JSON
15+
- `tree` - Compact indented tree view (85% fewer tokens than JSON)
16+
- `directory_tree` - Get recursive tree view as JSON (deprecated, use `tree`)
1517
- `search_files` - Recursively search for files matching glob patterns
1618
- `detect_encoding` - Auto-detect file encoding with confidence score
1719
- `list_encodings` - Show all supported encodings

‎TOOLS.md‎

Lines changed: 62 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -35,6 +35,42 @@ Read file contents with automatic encoding detection and optional partial readin
3535
}
3636
```
3737

38+
### read_multiple_files
39+
40+
Read multiple files concurrently with encoding support. Individual file failures don't stop the operation.
41+
42+
**Parameters:**
43+
- `paths` (required): Array of file paths to read
44+
- `encoding` (optional): Encoding for all files (auto-detected per file if omitted)
45+
46+
**Example:**
47+
```json
48+
{
49+
"paths": ["/path/to/file1.pas", "/path/to/file2.pas"],
50+
"encoding": "cp1251"
51+
}
52+
```
53+
54+
**Response:**
55+
```json
56+
{
57+
"results": [
58+
{
59+
"path": "/path/to/file1.pas",
60+
"content": "program Hello;...",
61+
"detectedEncoding": "windows-1251",
62+
"encodingConfidence": 95
63+
},
64+
{
65+
"path": "/path/to/file2.pas",
66+
"content": "unit Utils;..."
67+
}
68+
],
69+
"successCount": 2,
70+
"errorCount": 0
71+
}
72+
```
73+
3874
### write_file
3975

4076
Write content to file. UTF-8 writes as-is; other encodings convert from UTF-8.
@@ -123,29 +159,50 @@ List files and directories with optional pattern filtering.
123159
}
124160
```
125161

126-
### directory_tree
162+
### tree
127163

128-
Get a recursive tree view of files and directories as JSON.
164+
Compact indented tree view optimized for AI/LLM consumption. Uses ~85% fewer tokens than `directory_tree`.
129165

130166
**Parameters:**
131167
- `path` (required): Root directory
132-
- `excludePatterns` (optional): Array of glob patterns to exclude
168+
- `maxDepth` (optional): Maximum recursion depth (0 = unlimited)
169+
- `maxFiles` (optional): Maximum entries to return (default: 1000)
170+
- `dirsOnly` (optional): Only show directories, not files
171+
- `exclude` (optional): Array of patterns to exclude
133172

134173
**Example:**
135174
```json
136175
{
137176
"path": "/path/to/project",
138-
"excludePatterns": ["node_modules", ".git"]
177+
"maxDepth": 3,
178+
"exclude": ["node_modules", ".git"]
139179
}
140180
```
141181

142182
**Response:**
143183
```json
144184
{
145-
"tree": "{\"name\":\"project\",\"type\":\"directory\",\"children\":[...]}"
185+
"tree": "src/\n handler/\n read.go\n write.go\n server.go\nREADME.md",
186+
"fileCount": 4,
187+
"dirCount": 2,
188+
"truncated": false
146189
}
147190
```
148191

192+
### directory_tree (deprecated)
193+
194+
Get a recursive tree view as JSON. **Use `tree` instead for 85% fewer tokens.**
195+
196+
**Parameters:**
197+
- `path` (required): Root directory
198+
- `excludePatterns` (optional): Array of glob patterns to exclude
199+
200+
**Response:**
201+
```json
202+
{
203+
"tree": "{\"name\":\"project\",\"type\":\"directory\",\"children\":[...]}"
204+
}
205+
149206
### get_file_info
150207

151208
Get detailed metadata about a file or directory.

‎filetoolsserver/handler/tree.go‎

Lines changed: 121 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,121 @@
1+
package handler
2+
3+
import (
4+
"context"
5+
"fmt"
6+
"os"
7+
"path/filepath"
8+
"strings"
9+
10+
"github.com/modelcontextprotocol/go-sdk/mcp"
11+
)
12+
13+
// HandleTree returns a compact indented tree view optimized for AI consumption.
14+
// Uses ~70-80% fewer tokens than JSON format.
15+
func (h *Handler) HandleTree(ctx context.Context, req *mcp.CallToolRequest, input TreeInput) (*mcp.CallToolResult, TreeOutput, error) {
16+
v := h.ValidatePath(input.Path)
17+
if !v.Ok() {
18+
return v.Result, TreeOutput{}, nil
19+
}
20+
21+
stat, err := os.Stat(v.Path)
22+
if err != nil {
23+
return errorResult(fmt.Sprintf("failed to access path: %v", err)), TreeOutput{}, nil
24+
}
25+
if !stat.IsDir() {
26+
return errorResult(ErrPathMustBeDirectory.Error()), TreeOutput{}, nil
27+
}
28+
29+
// Set defaults
30+
maxFiles := input.MaxFiles
31+
if maxFiles == 0 {
32+
maxFiles = 1000
33+
}
34+
35+
state := &treeState{
36+
maxFiles: maxFiles,
37+
maxDepth: input.MaxDepth,
38+
dirsOnly: input.DirsOnly,
39+
exclude: input.Exclude,
40+
fileCount: 0,
41+
dirCount: 0,
42+
truncated: false,
43+
}
44+
45+
var sb strings.Builder
46+
buildCompactTree(&sb, v.Path, 0, state)
47+
48+
return &mcp.CallToolResult{}, TreeOutput{
49+
Tree: sb.String(),
50+
FileCount: state.fileCount,
51+
DirCount: state.dirCount,
52+
Truncated: state.truncated,
53+
}, nil
54+
}
55+
56+
type treeState struct {
57+
maxFiles int
58+
maxDepth int
59+
dirsOnly bool
60+
exclude []string
61+
fileCount int
62+
dirCount int
63+
truncated bool
64+
}
65+
66+
func (s *treeState) totalCount() int {
67+
return s.fileCount + s.dirCount
68+
}
69+
70+
func buildCompactTree(sb *strings.Builder, dirPath string, depth int, state *treeState) {
71+
if state.truncated {
72+
return
73+
}
74+
if state.maxDepth > 0 && depth >= state.maxDepth {
75+
return
76+
}
77+
78+
entries, err := os.ReadDir(dirPath)
79+
if err != nil {
80+
return
81+
}
82+
83+
indent := strings.Repeat(" ", depth)
84+
85+
for _, entry := range entries {
86+
if state.totalCount() >= state.maxFiles {
87+
state.truncated = true
88+
return
89+
}
90+
91+
name := entry.Name()
92+
if shouldExcludeTree(name, state.exclude) {
93+
continue
94+
}
95+
96+
if entry.IsDir() {
97+
state.dirCount++
98+
sb.WriteString(indent)
99+
sb.WriteString(name)
100+
sb.WriteString("/\n")
101+
buildCompactTree(sb, filepath.Join(dirPath, name), depth+1, state)
102+
} else if !state.dirsOnly {
103+
state.fileCount++
104+
sb.WriteString(indent)
105+
sb.WriteString(name)
106+
sb.WriteString("\n")
107+
}
108+
}
109+
}
110+
111+
func shouldExcludeTree(name string, patterns []string) bool {
112+
for _, pattern := range patterns {
113+
if name == pattern {
114+
return true
115+
}
116+
if matched, _ := filepath.Match(pattern, name); matched {
117+
return true
118+
}
119+
}
120+
return false
121+
}

‎filetoolsserver/handler/tree_test.go‎

Lines changed: 119 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,119 @@
1+
package handler
2+
3+
import (
4+
"context"
5+
"os"
6+
"path/filepath"
7+
"strings"
8+
"testing"
9+
)
10+
11+
func TestHandleTree_BasicOutput(t *testing.T) {
12+
tempDir := t.TempDir()
13+
h := NewHandler([]string{tempDir})
14+
15+
// Create structure: src/handler/read.go, src/server.go, README.md
16+
os.MkdirAll(filepath.Join(tempDir, "src", "handler"), 0755)
17+
os.WriteFile(filepath.Join(tempDir, "src", "handler", "read.go"), []byte(""), 0644)
18+
os.WriteFile(filepath.Join(tempDir, "src", "server.go"), []byte(""), 0644)
19+
os.WriteFile(filepath.Join(tempDir, "README.md"), []byte(""), 0644)
20+
21+
input := TreeInput{Path: tempDir}
22+
_, output, err := h.HandleTree(context.Background(), nil, input)
23+
24+
if err != nil {
25+
t.Fatalf("unexpected error: %v", err)
26+
}
27+
if output.FileCount != 3 {
28+
t.Errorf("expected 3 files, got %d", output.FileCount)
29+
}
30+
if output.DirCount != 2 {
31+
t.Errorf("expected 2 dirs, got %d", output.DirCount)
32+
}
33+
// Check indented format
34+
if !strings.Contains(output.Tree, "src/") {
35+
t.Error("expected 'src/' in output")
36+
}
37+
if !strings.Contains(output.Tree, " handler/") {
38+
t.Error("expected indented 'handler/' in output")
39+
}
40+
}
41+
42+
func TestHandleTree_MaxDepth(t *testing.T) {
43+
tempDir := t.TempDir()
44+
h := NewHandler([]string{tempDir})
45+
46+
os.MkdirAll(filepath.Join(tempDir, "a", "b", "c"), 0755)
47+
os.WriteFile(filepath.Join(tempDir, "a", "b", "c", "deep.txt"), []byte(""), 0644)
48+
49+
input := TreeInput{Path: tempDir, MaxDepth: 2}
50+
_, output, _ := h.HandleTree(context.Background(), nil, input)
51+
52+
// Should see a/ and a/b/ but not a/b/c/
53+
if !strings.Contains(output.Tree, "a/") {
54+
t.Error("expected 'a/' at depth 1")
55+
}
56+
if !strings.Contains(output.Tree, " b/") {
57+
t.Error("expected 'b/' at depth 2")
58+
}
59+
if strings.Contains(output.Tree, "c/") {
60+
t.Error("should NOT see 'c/' at depth 3 when maxDepth=2")
61+
}
62+
}
63+
64+
func TestHandleTree_MaxFiles(t *testing.T) {
65+
tempDir := t.TempDir()
66+
h := NewHandler([]string{tempDir})
67+
68+
for i := 0; i < 20; i++ {
69+
os.WriteFile(filepath.Join(tempDir, string(rune('a'+i))+".txt"), []byte(""), 0644)
70+
}
71+
72+
input := TreeInput{Path: tempDir, MaxFiles: 5}
73+
_, output, _ := h.HandleTree(context.Background(), nil, input)
74+
75+
if output.FileCount+output.DirCount > 5 {
76+
t.Errorf("expected max 5 entries, got %d", output.FileCount+output.DirCount)
77+
}
78+
if !output.Truncated {
79+
t.Error("expected truncated=true")
80+
}
81+
}
82+
83+
func TestHandleTree_DirsOnly(t *testing.T) {
84+
tempDir := t.TempDir()
85+
h := NewHandler([]string{tempDir})
86+
87+
os.MkdirAll(filepath.Join(tempDir, "src"), 0755)
88+
os.WriteFile(filepath.Join(tempDir, "file.txt"), []byte(""), 0644)
89+
os.WriteFile(filepath.Join(tempDir, "src", "code.go"), []byte(""), 0644)
90+
91+
input := TreeInput{Path: tempDir, DirsOnly: true}
92+
_, output, _ := h.HandleTree(context.Background(), nil, input)
93+
94+
if output.FileCount != 0 {
95+
t.Errorf("expected 0 files with dirsOnly, got %d", output.FileCount)
96+
}
97+
if output.DirCount != 1 {
98+
t.Errorf("expected 1 dir, got %d", output.DirCount)
99+
}
100+
}
101+
102+
func TestHandleTree_Exclude(t *testing.T) {
103+
tempDir := t.TempDir()
104+
h := NewHandler([]string{tempDir})
105+
106+
os.MkdirAll(filepath.Join(tempDir, "node_modules"), 0755)
107+
os.MkdirAll(filepath.Join(tempDir, "src"), 0755)
108+
os.WriteFile(filepath.Join(tempDir, "node_modules", "pkg.js"), []byte(""), 0644)
109+
110+
input := TreeInput{Path: tempDir, Exclude: []string{"node_modules"}}
111+
_, output, _ := h.HandleTree(context.Background(), nil, input)
112+
113+
if strings.Contains(output.Tree, "node_modules") {
114+
t.Error("expected node_modules to be excluded")
115+
}
116+
if !strings.Contains(output.Tree, "src/") {
117+
t.Error("expected src/ to be present")
118+
}
119+
}

‎filetoolsserver/handler/types.go‎

Lines changed: 22 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -216,3 +216,25 @@ type ReadMultipleFilesOutput struct {
216216
ErrorCount int `json:"errorCount"`
217217
}
218218

219+
// TreeInput defines input parameters for tree tool.
220+
// Path: Root directory to display (required)
221+
// MaxDepth: Maximum recursion depth, 0 = unlimited (optional, default: 0)
222+
// MaxFiles: Maximum entries to return, 0 = unlimited (optional, default: 1000)
223+
// DirsOnly: Only show directories, not files (optional, default: false)
224+
// Exclude: Patterns to exclude (optional)
225+
type TreeInput struct {
226+
Path string `json:"path"`
227+
MaxDepth int `json:"maxDepth,omitempty"`
228+
MaxFiles int `json:"maxFiles,omitempty"`
229+
DirsOnly bool `json:"dirsOnly,omitempty"`
230+
Exclude []string `json:"exclude,omitempty"`
231+
}
232+
233+
// TreeOutput defines output for tree tool
234+
type TreeOutput struct {
235+
Tree string `json:"tree"`
236+
FileCount int `json:"fileCount"`
237+
DirCount int `json:"dirCount"`
238+
Truncated bool `json:"truncated,omitempty"`
239+
}
240+

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